About: Aspergillus.
INDEX
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9697101/
Lee Fang Tan, Vi Lien Yap, Mogana Rajagopal, Christophe Wiart,
Malarvili Selvaraja, Mun Yee Leong, and Puay Luan Tan.
Plants (Basel). 2022 Nov; 11(22): 3009.
Published online 2022 Nov 8.
-- doi: 10.3390/plants11223009
Aspergillus species consists of a group of opportunistic fungi that is virulent when the immunity of the host is compromised.
Among the various species, Aspergillus fumigatus is the most prevalent species.
However, the prevalence of fungal infections caused by non-fumigatus Aspergillus has been increasing.
Polyenes, echinocandins and azoles are the three main classes of antifungal agents being used for the treatment of aspergillosis.
Nevertheless, the incidence of resistance towards these 3 classes has been rising over the years among several Aspergillus spp. The side effects associated with these conventional antifungal agents have also limited their usage. This urges the need for the discovery of a safe and effective antifungal agent, which presents a major challenge in medicine today. Plants present a rich source of bioactive molecules which have been proven effective against a wide range of infections and conditions. ...
Fungal diseases were estimated to cause about 1.6 million deaths per year while more than 1 billion people were diagnosed with severe fungal diseases. Yet, they are still an under-discussed topic by public health authorities, with a lack of funding supporting the surveillance systems for the monitoring of fungal disease incidence and antifungal drug resistance. Fungi can infect crop plants resulting in a great impact and loss of food crops production thus leading to increased insecurity issues in global food production. Fungal diseases are also of veterinary and medicinal importance and can affect significantly the health and morbidity of animals and humans.
The main fungi causing diseases in humans are Aspergillus, Candida, Cryptococcus, Pneumocystis jirovecii and endemic dimorphic fungi. In general, humans are relatively resistant to invasive fungal diseases. However, in immunocompromised patients and HIV-infected patients, the susceptibility toward opportunistic fungal infections is increased. Candida spp. are the most common isolates from immunocompromised patients, but Aspergillus or Cryptococcus may also be isolated from these patients. This category of patients includes those who undergo chemotherapy or immunosuppression as well as organ transplantation and even patients with chronic diseases such as diabetes mellitus, AIDS and cystic fibrosis.
Aspergillus spp. is one of the most common causes of life-threatening fungal infection, especially in immunocompromised patients. Most infections involving Aspergillus spp. are caused by Aspergillus fumigatus; however, infections caused by non-fumigatus Aspergillus species, such as Aspergillus flavus, Aspergillus niger and Aspergillus terreus, have also been identified. Due to the difference in the antifungal susceptibility profile between the different species, it is therefore important to know the distribution and epidemiology of the different species causing infections in different areas in the world to aid in the selection of the most appropriate therapeutic agent.
At present, three types of antifungal agents are used by clinicians for the treatment of fungal infections, namely polyenes, echinocandins and azoles. Resistance has been an issue due to the limited antifungal agents available while some fungi can be resistant to all three types of antifungal agents. In addition, the gold standard antifungal agent used to treat systemic infections, amphotericin B, is also well known to be associated with nephrotoxicity. Its side effect and toxicity may be so severe that discontinuation of therapy is required regardless of having a life-threatening fungal infection. The increase in the incidence of fungal infections, development of resistance and limitations of the currently available antifungal agents increase the need for the discovery of new antifungal agents, ideally with a different mechanism of action.
Natural products play an important role in medical therapy.
From January 1981 to September 2019, 1,881 new drugs were approved of which natural products constitute 4.6% while drugs derived from natural products constitute 18.9%. Many natural products, their extracts and secondary metabolites have been found to be effective as anti-inflammatory agents, anti-diabetic, anti-cancer, etc. . The pharmacological activities of plants are largely due to their secondary metabolites, inter alia, terpenoids, alkaloids, flavonoids and other phenolic compounds, including tannins, which have been found to exert in-vitro antimicrobial activity. Growing bodies of evidence have demonstrated the potential of higher plants in exerting antimicrobial activity. For example, betel leaf against Candida spp. and turmeric against Schistosoma mansoni. The use of natural products may also provide a better resolution for patients who are afraid of the side effects of conventional synthetic antimicrobial agents. ...
About: Aspergillus Infections.
INDEX
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9697101/
Lee Fang Tan, Vi Lien Yap, Mogana Rajagopal, Christophe Wiart,
Malarvili Selvaraja, Mun Yee Leong, and Puay Luan Tan.
Plants (Basel). 2022 Nov; 11(22): 3009.
Published online 2022 Nov 8.
-- doi: 10.3390/plants11223009
Aspergillus infections are among the most common fungal diseases worldwide.
There are several types of Aspergillus infections that have been diagnosed, which include but are not limited to
- allergic bronchopulmonary aspergillosis,
- chronic pulmonary aspergillosis,
- aspergillus spondylitis,
- invasive aspergillosis and
- cerebral aspergillosis.
Aspergillus infections can infect both healthy and immunocompromised individuals, although infections are more common in the immunocompromised, and are often associated with a bad prognosis. Invasive aspergillosis is the most severe form of aspergillosis, in which the infection spreads from the lungs to other distant organs. The increased spread of the new severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) causes dysregulation of the immune system, facilitates infection by Aspergillus spp., leading to COVID-19-associated pulmonary aspergillosis (CAPA). Patients with underlying haematological disorders, undergoing immunosuppressive therapy and those having chronic illnesses such as diabetes mellitus, chronic kidney disease (CKD) and chronic obstructive pulmonary disease (COPD) are at a higher risk of developing Aspergillus infections. Recent global estimates have also reported 3 million cases of chronic pulmonary aspergillosis, while more than 300,000 cases were identified for invasive aspergillosis.
The total direct medical costs caused by Aspergillus infections were estimated to be $1,254,833,662 in the United States in 2017]. The total hospitalization costs inflicted by Aspergillus infections (total cost of $1.2 billion) were also the second highest among all the other fungal diseases.
Aspergillus infection is caused by Aspergillus spp., which consists of more than 250 species, with fewer than 40 species being associated with infections in humans. A. fumigatus is the main species causing infection in humans and is the main contributor to death among infected patients. ... A. fumigatus is able to tolerate a wide range of temperature and pH in which it can be isolated from decaying vegetation and soil with a temperature range of 12 °C to 65 °C and pH of 2.1 to 8.8. In addition, the presence of genes encoding glycosylhydrolases and a group of extracellular proteinases allow A. fumigatus to survive the degradation of polysaccharides from plant cell walls and nitrogen sources acquired from the degradation of proteinaceous substrates [26,27]. These reasons could have enhanced the ability of A. fumigatus to survive in the environment; ...
Aspergillus spp. poses a life threat to society, and particularly immunocompromised patients, since many strains have shown resistance towards the existing antifungal agents. Medicinal plants provide new hope in the fight against Aspergillus infections.... interactions among different plant extracts, compounds, or antifungal agents should also be studied to maximise the antifungal efficacy while minimizing toxicity. ...
About: Treatments, Azoles.
INDEX
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9697101/
Lee Fang Tan, Vi Lien Yap, Mogana Rajagopal, Christophe Wiart,
Malarvili Selvaraja, Mun Yee Leong, and Puay Luan Tan.
Plants (Basel). 2022 Nov; 11(22): 3009.
Published online 2022 Nov 8.
-- doi: 10.3390/plants11223009
Azoles, in particular triazoles, are the preferred agents for the treatment and prevention of invasive aspergillosis in most patients.
Azoles are fungistatic agents that act by inhibiting the lanosterol C14a demethylation, thus interfering with the synthesis of ergosterol present in the fungal cell membrane. The resultant 14-a-methylsterol produced is then placed loosely within the lipid bilayers, affecting the stability of the fungal cell membrane.
This group of fungistatic azoles include itraconazole, voriconazole and posaconazole which are the first line for the treatment of invasive aspergillosis. Even though triazole antifungals are generally well tolerated, side effects such as hepatotoxicity have been reported, with voriconazole causing life-threatening hepatitis in several patients]. In addition, as aspergillosis occurs mainly in immunosuppressed patients particularly cancer patients, drug interactions between triazoles and chemotherapeutic agents have also been reported. This is because triazoles and many chemotherapeutic agents are being metabolised by a common metabolic pathway, the hepatic cytochrome p450 system, thus, close monitoring is highly warranted to minimize toxicity resulting from the concurrent use of these agents.
... the resistance of Aspergillus spp. towards azoles has also been reported.
A 5-year follow-up study revealed that 4.1% and 14.5% of A. fumigatus isolates were resistant to voriconazole and itraconazole, respectively. Among the voriconazole-resistance isolates, 95% have a cross-resistance with itraconazole. Regardless, the resistance level is highly variable depending on the type of azole drug used, the clinical settings, the patient’s background and the underlying infection. In addition, the prevalence of azole-resistant A. fumigatus from clinical and environmental samples across Asia revealed the range of 3% in China, Japan and Kuwait to 33% in China.
Azole-resistant A. fumigatus has also been associated with a higher mortality rate.
In 2019, the U.S. Centers for Disease Control and Prevention (CDC) listed azole-resistant A. fumigatus on the watch list in the CDC’s antibiotic resistance threats report, a category that includes uncommon germs that potentially spread and cause significant morbidity and mortality].
About: Treatments, Polyenes.
INDEX
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9697101/
Lee Fang Tan, Vi Lien Yap, Mogana Rajagopal, Christophe Wiart,
Malarvili Selvaraja, Mun Yee Leong, and Puay Luan Tan.
Plants (Basel). 2022 Nov; 11(22): 3009.
Published online 2022 Nov 8.
-- doi: 10.3390/plants11223009
... the polyenes, in which amphotericin B is used in the treatment of Aspergillus infections.
A well-known antifungal mechanism arising from this group of agents involves the interaction with ergosterol, resulting in ionic imbalance and cell death. However, recent studies propose the ability of amphotericin B in forming large extramembranous aggregates that extract ergosterol from the lipid bilayers, leading to cell death.
Amphotericin B is usually not recommended as the first-line treatment unless the patient is contraindicated to voriconazole or it is administered as salvage therapy. Although amphotericin B is an effective agent for Aspergillus infection, its use is limited due to the high incidence of nephrotoxicity. In 2018, widespread amphotericin B-resistance were reported in Canada among A. fumigatus clinical strains, which could greatly contribute to treatment failure.
About: Treatments, Echinocandins.
INDEX
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9697101/
Lee Fang Tan, Vi Lien Yap, Mogana Rajagopal, Christophe Wiart,
Malarvili Selvaraja, Mun Yee Leong, and Puay Luan Tan.
Plants (Basel). 2022 Nov; 11(22): 3009.
Published online 2022 Nov 8.
-- doi: 10.3390/plants11223009
Echinocandin antifungal agents are lipopeptides obtained from fungal secondary metabolites.
Agents belonging to this class are caspofungin, micafungin and anidulafungin.
They act by noncompetitively inhibiting ß-1,3-glucan synthase (encoded by fks1) which is involved in the synthesis of ß-1,3-glucan, a major polysaccharide in the cell wall of the fungi. This class of agents carries the advantages of having few adverse effects and drug interactions, which are the limitations associated with the previous two groups. However, among the three classes of antifungal agents, echinocandins have the least effectiveness against Aspergillus spp.
Due to the limited oral bioavailability, echinocandins are administered only via intravenous infusion, thus are limited only to patients admitted to the hospital. This contrasts with azole antifungal agents which are able to be delivered orally.
... due to the limited data available on the efficacy of echinocandin monotherapy, they are used mainly in salvage therapy or when the other drugs are not preferable in the patients. In 2017, the first case of echinocandin resistance in A. fumigatus caused by the point mutation in the fks1 gene has been reported, causing treatment failure.
About: Treatments, SUMMARY.
INDEX
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9697101/
Lee Fang Tan, Vi Lien Yap, Mogana Rajagopal, Christophe Wiart,
Malarvili Selvaraja, Mun Yee Leong, and Puay Luan Tan.
Plants (Basel). 2022 Nov; 11(22): 3009.
Published online 2022 Nov 8.
-- doi: 10.3390/plants11223009
... many of the current antifungals originated from natural sources.
Amphotericin B, which was discovered in 1956 was derived from the bacteria Streptomyces nodosus.
... echinocandins are semisynthetic lipopeptides obtained by chemically modifying compounds derived from natural sources.
The lead compound of caspofungin, micafungin and anidulafungin were all obtained from fungi, which are
Glarea lozoyensis, Coleophoma empetri and
Aspergillus nidulans, respectively
About: Treatments, Plant Sources.
INDEX
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9697101/
Lee Fang Tan, Vi Lien Yap, Mogana Rajagopal, Christophe Wiart,
Malarvili Selvaraja, Mun Yee Leong, and Puay Luan Tan.
Plants (Basel). 2022 Nov; 11(22): 3009.
Published online 2022 Nov 8.
-- doi: 10.3390/plants11223009
Inhibition of fungal growth by flavonoids involves several underlying mechanisms, including the disruption of the plasma membrane, induction of mitochondrial dysfunction as well as inhibition of cell wall formation, cell division, RNA, protein synthesis and efflux-mediated pumping system.
Alkaloids are also well known for their various biological activities including anticancer, antibacterial, antidepressant, herbicidal, anti-histaminic, central nervous system stimulation, insecticidal and fungicidal activities. They are heterocyclic structures containing one or more nitrogen atoms which can be classified according to their chemical structure or natural origin. The antifungal activity of alkaloids may be mediated through the disruption of mitochondrial iron-sulphur (Fe-S) cluster synthesis and cell wall integrity
Triterpenes are proved to possess potential antifungal activity in addition to their anticancer, anti-inflammatory, anti-oxidative and anti-viral activities. Their antifungal activity may be through inhibition of mycelial growth, causing damage to the cell membrane, compromising the integrity and permeability of fungal cells, as well as by causing cation leakage from the cytoplasm
Plants are used extensively as crude materials and as sources of pure compounds.
Various techniques such as
- Soxhlet extraction,
- maceration,
- hydro-distillation,
- percolation,
- decoction,
- reflux extraction,
- pressurized liquid extraction,
- supercritical fluid extraction,
- ultrasound assisted extraction,
- microwave assisted extraction,
- pulsed electric field extraction, and
- enzyme assisted extraction
have been employed to extract the bioactive compounds from plant materials.
Twenty-five South African medicinal plants selected on the basis of their availability were investigated against three phytopathogenic fungal strains including A. flavus and A. ochraceous. ...
Among the ten selected South African medicinal plants,
the organic extract of Milletia grandis revealed the lowest MIC value of 0.01 mg/mL against A. ochraceous after 24 and 48 h incubation period [65].
... the organic extracts of
gave low MIC values of 0.01–0.10 mg/mL ...
The high phenolic contents of the plants may be responsible for their bioactivity. ...
these plant species were generally non-toxic to Bovine dermis (LC50 = 0.01 to 0.68 mg/mL) and Vero cells (LC50 = 0.01 to 0.59 mg/mL),
and W. salutaris showed the best safety margin with SI value of 34.
Secondary metabolites of flavonoids, stilbene, phenolic acids, alkaloids and coumarin classes were identified in ... fractions of Zygophyllum coccineum, an edible halophytic plant. ... Extracts of Z. coccineum demonstrated potent antifungal activity against A. fumigatus ... also demonstrated cytotoxic effects ... against MCF-7 (breast cancer), HCT-116 (colon cancer) and HepG2 (liver cancer) cell lines, ....
Phytochemical screening and determination of antimicrobial activities of the desert plants growing in Saudi Arabia have reported notable antifungal activity against A. fumigatus.
.... the plants have no toxicity and are considered safe for human use.
A combination of several medicinal herbs for extra therapeutic benefits is known as polyherbalism and it has been used in Ayurvedic, Chinese and Unani medicines since ancient times. Multiple bioactive constituents present in the polyherbal formulations may interact with each other and result in a greater effect, a phenomenon known as synergism. With the wide therapeutic range and high efficiency of polyherbal formulations, they are used to treat various diseases including infections. ... Zingiberaceae showed the highest antifungal activity against the tested Aspergillus spp. (A. niger and A. fumigatus. Moreover, its antifungal activity was also better than the standard fluconazole ....
About: Treatments, Essential Oils.
INDEX
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9697101/
Lee Fang Tan, Vi Lien Yap, Mogana Rajagopal, Christophe Wiart,
Malarvili Selvaraja, Mun Yee Leong, and Puay Luan Tan.
Plants (Basel). 2022 Nov; 11(22): 3009.
Published online 2022 Nov 8.
-- doi: 10.3390/plants11223009
Essential oils (EOs) are mixtures of volatile compounds obtained from the plants by hydro-distillation, steam distillation, dry distillation, or mechanical cold pressing of plants. They are mainly composed of terpenes, terpenoids and phenylpropanoids with other compounds such as fatty acids, oxides and sulphur derivatives that may also be found in EOs. Many EOs have been reported to exhibit antimicrobial properties ....
EO from the fresh leaves of Murraya paniculata showed moderate antifungal to strong antifungal activity against A. niger ... and A. parasiticum ..... The antifungal action of M. paniculata EO is due to the synergistic action among its components, ... demonstrated fungicidal action instead of fungistatic action. From the time–kill curve study, the EO showed a good and rapid dose-dependent fungicidal effect within 4-8 hours for A. niger. ...
The antifungal activities of the EOs are not distinguished against all strains and their effective time of action is limited by their high volatility. Furthermore, their features such as hydrophobicity, instability and possible toxicity may compromise their use. Encapsulation of the EOs may help to overcome these limitations. ... Physical encapsulating methods include extrusion, fluidization, lyophilization, solvent removal, spray dryer, supercritical fluid technology, whereas coacervation, ionic gelation, liposomes and miniemulsion polymerization are the chemical methods used to obtain microcapsules of EOs. Substances used as wall materials for microencapsulation of EOs include gums (e.g., arabic, almond, sodium alginate), proteins (e.g., whey, soy, casein, gelatin), polysaccharides (e.g., starch, dextrin, maltodextrin, cyclodextrin, chitosan, cellulose) and lipids (e.g., waxes, paraffin, fats). ...
The bioavailability of plant bioactives is limited by poor solubility, poor stability due to gastric and colonic acidity, poor metabolism by gut microflora, poor absorption across the intestinal wall and active efflux mechanism as well as first-pass metabolic effects, failing clinical studies. Novel drug delivery systems and carriers for herbal medicines have been developed with the aim of delivering the phytochemicals to the site of action at a rate according to the body’s needs throughout the treatment. ... The use of plant extracts in the green synthesis of metallic nanoparticles may produce new nanomaterial with more potent and/or novel biological activities due to the synergistic effect. ...
About: Treatments, Herbs & Spices.
INDEX
https://pubmed.ncbi.nlm.nih.gov/9708267/
Food Prot. 1998 Jan;61(1):123-5. --- doi: 10.4315/0362-028x-61.1.123.
By MEl-CHIN YIN* and WEN-SHEN CHENG
Elsevier, 3 p PDF: https://pdf.sciencedirectassets.com/782803/1-s2.0...
Journal of Food Protection, Vol. 61, No.1, 1998, Pages 123-125
Copyright ©, International Association of Milk, Food and Environmental Sanitarians
The inhibitory effect of water-soluble extracts of garlic bulbs, green garlic, green onions, hot peppers, ginger, Chinese parsley, and basil on the growth of Aspergillus niger and Aspergillus flavus was examined.
Garlic bulbs, green garlic, and green onions showed an inhibitory effect against these two fungi.
The influence of heat, acid, and salt upon the inhibitory effect of these three herbs was further studied.
Increasing the temperature from 60 to 100 degrees C resulted in a significant (P < 0.05) decrease in the inhibitory effect of garlic bulbs against the fungi tested.
TEMPERATURE:
Green garlic and green onion lost their antifungal activity against A. niger after being treated at 80 and 60 degrees, respectively.
For A. flavus, the inhibitory effect of green garlic declined significantly (P < 0.05) with an increase in temperature.
However, the antifungal activity of green onions against A. flavus was heat stable.
ACID & SALT Influences:
For both fungi tested in this study, the antifungal activity of these spice plants was not affected by acid treatments at pH values 2, 4, or 6, or salt by treatments at concentrations of 0.1, 0.2, 0.3, and 0.4 M (P > 0.05).
The presence and growth of fungi in foods may cause food spoilage and result in a reduction in its quality quantity. Some Aspergillus species are xerophilic fungi and are responsible for many cases of food and feed contamination cases (1, 13). A. niger is commonly involved in fruit spoilage (9), while A. fiavus produces aflatoxins in food (11,12). Aflatoxins are known to be potent hepatocarcinogens in animals and humans (6). Because of health and economic considerations, the search for antifungal agents is extensive (7, 11, 16). Natural plant extracts may provide an alternative way to protect food or feed from fungal contamination.
Article: Interactions between Herbals & Drugs.
INDEX
Interactions between herbal medicines and prescribed drugs: an updated systematic review.
https://www.aspergillus.org.uk/article_database/interactions-between-
herbal-medicines-and-prescribed-drugs-an-updated-systematic-review/
Author: Izzo AA, Ernst E
Date: 5 October 2009
Full Article (22 p pdf) : https://s3-eu-west-1.amazonaws.com/awarticles/19719333.pdf
The concomitant use of herbal medicines and pharmacotherapy is wide spread.
St John’s wort:
Clinical trials indicate that St John’s wort (Hypericum perforatum), via cytochrome P450 (CYP) and/or P-glycoprotein induction, reduces the plasma concentrations (and/or increases the clearance) of alprazolam, amitriptyline, atorvastatin, chlorzoxazone, ciclosporin, debrisoquine, digoxin, erythromycin, fexofenadine, gliclazide, imatinib, indinavir, irinotecan, ivabradine, mephenytoin, methadone, midazolam, nifedipine, omeprazole, oral contraceptives, quazepam, simvastatin, tacrolimus, talinolol, verapamil, voriconazole and warfarin. Case reports or case series suggest interactions of St John’s wort with adrenergic vasopressors, anaesthetics, bupropion, buspirone, ciclosporin, eletriptan, loperamide, nefazodone, nevirapine, oral contraceptives, paroxetine, phenprocoumon, prednisone, sertraline, tacrolimus, theophylline, tibolone, tryptophan, venlafaxine and warfarin.
Ginkgo (Ginkgo biloba) decreases the plasma concentrations of omeprazole, ritonavir and tolbutamide.
Clinical cases indicate interactions of ginkgo with antiepileptics, aspirin (acetylsalicylic acid), diuretics, ibuprofen, risperidone, rofecoxib, trazodone and warfarin.
Ginseng (Panax ginseng) may interact with phenelzine and warfarin.
Kava (Piper methysticum) increases the clearance of chlorzoxazone (a CYP2E1 substrate) and may interact with alprazolam, levodopa and paroxetine.
Garlic (Allium sativum) interacts with chlorpropamide, fluindione, ritonavir and warfarin; it also reduces plasma concentrations of chlorzoxazone (a CYP2E1 probe).
Echinacea might affect the clearance of caffeine (a CYP1A2 probe) and midazolam (a CYP3A4 probe).
Saw palmetto (Serenoa repens): No interactions have been reported for saw palmetto (Serenoa repens). ...
Article: Antifungal Activity of Essential Oil & Plant-Derived
Natural Compounds against Aspergillus flavus.
INDEX
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9774910/
Fei Tian, So Young Woo, Sang Yoo Lee, Su Been Park, Yaxin Zheng, and Hyang Sook Chun
Joanna Kozlowska, Academic Editor and Anna Duda-Madej, Academic Editor
Antibiotics (Basel). 2022 Dec; 11(12): 1727.
Published online 2022 Dec 1. --- doi: 10.3390/antibiotics11121727
129 References and a selection of Figures, Diagrams and Charts.
Aspergillus flavus is a facultative parasite that contaminates several important food crops at both the pre- and post-harvest stages. Moreover, it is an opportunistic animal and human pathogen that causes aspergillosis diseases. A. flavus also produces the polyketide-derived carcinogenic and mutagenic secondary metabolite aflatoxin, which negatively impacts global food security and threatens human and livestock health. Recently, plant-derived natural compounds and essential oils (EOs) have shown great potential in combating A. flavus spoilage and aflatoxin contamination.
Aspergillus flavus is a facultative parasite that naturally exists as a saprophytic soil fungus and contaminates several important food crops at both the pre- and post-harvest stages. The fungus causes diseases in agricultural crops, such as cottonseed, maize, peanuts, and tree nuts, alongside being an opportunistic animal and human pathogen that causes aspergillosis diseases. A. flavus produces aflatoxin, which is a carcinogenic and mutagenic polyketide secondary metabolite. Aflatoxin contamination represents a worldwide food safety concern that impacts both the marketability and safety of multiple food crops.
The global economic losses due to their contamination have been estimated to be in the hundreds of millions of dollars, while maize and peanuts are the most affected food crops. For example, the US Food and Drug Administration (FDA) estimates that aflatoxin contamination in maize alone could cause annual losses to the food industry ranging from 52.1 million USD to 1.68 billion USD. Although most aflatoxigenic fungi commonly grow in tropical and subtropical climates (35° N–35° S), zones with a perennial aflatoxin contamination risk have expanded due to global climate changes. A. flavus and aflatoxin contaminations are predicted to pose serious threats to many countries and regions in the near future
A. flavus also colonizes the soil and decays vegetation, which makes avoiding exposure to this fungus at home, at the workplace, or even during hospitalizations almost impossible]. Indeed, A. flavus is also isolated comparatively at a higher frequency from aspergillosis infections in humans, especially in developing countries. According to the US Centers for Disease Control and Prevention (CDC), the number of hospitalizations related to aspergillosis in the United States increased by an average of 3% per year during 2000–2013.
Moreover, nearly 15,000 aspergillosis-associated hospitalizations occurred in the United States in 2014, at an estimated cost of 1.2 billion USD. Interestingly, most people breathe in Aspergillus spores every day without becoming ill. However, people with weakened immune systems or lung diseases are at a higher risk of developing health problems due to Aspergillus. For example, recent studies on ventilated patients with COVID-19 have reported a higher incidence of aspergillosis, affecting up to 30% of intubated patients.
... Synthetic fungicides, represented by azoles, which act by inhibiting the fungal cell membrane synthesis, are currently the major recourse for preventing Aspergillus contamination in food. However, despite the strict regulations on the application of chemical compounds in food, the use of synthetic fungicides can induce notable side effects, including toxicity to humans and animals, environmental pollution, and the development of drug-resistant fungal pathogens. For example, triazole fungicides are one of the most widely used broad-spectrum fungicides. Human exposure to triazole fungicides induces various adverse health effects, including developmental and hepatic toxicities, liver carcinogenicity, and reproductive toxicities. Recent studies also suggest that many triazole fungicides are potential endocrine disruptors and could interfere with steroid hormone biosynthesis in mammals.
Strobilurin fungicides are another group of fungicides that have been widely used in agriculture for decades. Studies have confirmed the cytotoxicity and genotoxicity of strobilurin fungicides to human peripheral blood lymphocytes. Aspergillosis treatments also depend on the use of azole antifungal drugs (e.g., voriconazole and itraconazole), to which an increasing number of fungal species have developed resistance. Meanwhile, consumers’ demand for healthier and more sustainable food products is also increasing. In response, the food industry is reformulating its products to replace artificial food additives and preservatives with natural, label-friendly alternatives. Therefore, the development of novel antifungal agents that effectively inhibit the growth, mycotoxin biosynthesis, and pathogenicity of A. flavus is in urgent need.
Most plants produce natural antimicrobial agents, either as part of their normal growth and development or in response to microbial infections or environmental stresses. Many plant-derived natural compounds and herbal extracts, such as phenols, terpenes, and terpenoids, have great potential for utilization in the combat of both foodborne and human pathogens. Besides being highly effective, many plant-derived natural compounds are safe for human health and biodegradable. ...
... Some plant-derived natural compounds have been similarly tested on food materials, such as corn, wheat, soybean, chickpea, pistachio, peanut, and rice (Table 1). The most widely invested plant-derived natural compounds or EOs against A. flavus and aflatoxin contamination in food materials are isolated from food-flavoring plants, such as
clove (Syzygium aromaticum L.),
cinnamon (Cinnamomum zeglanicum, C. verum),
oregano (Origanum vulgare L.), and
thyme (Thymus vulgaris L.).
These plants and their EOs or extracts have been used in food preparation for centuries and are categorized as “generally recognized as safe” (GRAS) by the U.S. FDA. Moreover, many of them possess beneficial effects on the human body, which, combined, makes them the ideal sources of safe, natural, antifungal, and antiaflatoxigenic agents.
The antifungal agents extracted from different plants are highly diverse.
Most of the plant-derived natural compounds that exhibit antifungal activity are phenols, terpenes, and terpenoids.
The antimicrobial activity of phenols is closely connected with their hydroxyl group, which is bonded directly to a benzene ring. The presence of a free hydroxyl group enables phenols to exchange their proton, thus, promoting their ability to modify the cell membrane integrity of microbes. Meanwhile, the hydroxyl group’s relative position on the benzene ring can potentially affect their antimicrobial efficacy. ... Terpenoids are suggested to possess greater antimicrobial activities than most terpenes, and these activities are mainly determined by their functional groups, such as alcohols and aldehydes. Furthermore, their hydrogen-bonding capacity and relative solubility could potentially affect their antimicrobial activities.
The efficiency of plant-derived natural compounds against fungal growth and mycotoxin production is affected by environmental factors, including light, oxygen, pH, temperature, and water activity. Light exposure and high amounts of oxygen in packaging generally decrease the antimicrobial efficiency of plant-derived natural compounds, probably through oxidation. ... The antimicrobial effects of plant-derived natural compounds tend to increase as environmental pH levels decrease. ... The susceptibility of microbials to plant-derived natural compounds generally increases as storage temperatures decrease. ... the antifungal and antiaflatoxigenic efficiencies of EOs are closely dependent on the water activity of the substrate. Generally, as the water activity decreases, the fungal growth is unfavored, and the antifungal activity of the EOs is promoted. The antiaflatoxigenic effects of EOs increase at relatively low water activities.
The interactions between individual plant-derived natural compounds may cause synergistic or antagonistic effects.
For example, ... the synergistic activity between thymol and carvacrol plays an important role in the overall antifungal activity of thyme and oregano EOs. The synergistic antifungal effects ... a combination of oregano and thyme EOs resulted in a synergistic antifungal effect against a variety of food pathogens, including A. flavus, A. parasiticus, and P. chrysogenum. Moreover, mixtures of peppermint and tea tree EOs exhibited synergistic effects against A. niger]. ... thyme EOs reduced aflatoxin accumulation by up to 72.7% in brown rice but by only 18.0% in white rice. ....
The synergistic antifungal effects of plant-derived natural compounds with fungicides and antifungal drugs have also been reported. For example, ... Plant-derived natural compounds are able to boost the antifungal efficiency of commonly used antifungal agents while reducing their required amounts for the effective inhibition of fungal contamination and infections, and, hence, they may lower the potential toxic effects on humans. ...
3.1. Acting on the Cell Wall of A. flavus
Different plant-derived natural compounds may target various kinds of microbes and execute their antimicrobial activity through numerous mechanisms. Meanwhile, the antifungal effects of natural compounds often have multiple targets, including the cell wall, cell membrane, mitochondria, and metabolic enzymes. Accordingly, their antifungal mechanisms of action may be due to physical, chemical, or biochemical changes in these cell components. Fungi have a unique cell wall structure that is absent in humans. It is comprised of a complex and dynamic structure of chitin, glycans, and glycoproteins, which fulfills several essential functions connected with the interaction between the cell and its environment. Indeed, the fungal cell wall is involved in the morphogenesis of fungal cells, the protection of the protoplasts from physical damage and osmotic stress, cell recognition in various interactions, and the exchange of nutrients and metabolic products, alongside drug resistance against antifungal agents ... the disruption of chitin biosynthesis causes disorder in the fungal cell wall, which leads to cell lysis and death. Many successful antifungal agents, such as nikkomycin and polyoxin, perform their antifungal activity by specifically inhibiting fungal chitin synthase. ... Antifungal agents, such as caspofungin, micafungin, and anidulafungin, inhibit ß-1,3-glucan synthase and, consequently, can disrupt the fungal cell wall formation, preventing fungal growth. ...
The antifungal activity of numerous plant-derived natural compounds and EOs was reported to damage the integrity and rigidity of the A. flavus cell wall. ... plant-derived natural compounds interfering with the enzymes related to cell wall synthesis. ... Several plant-based natural compounds are known to inhibit cell wall synthases. ... thymol and limonene had inhibitory effects on fungal cellulase and pectin methyl esterase. Additionally, ... cinnamaldehyde inhibits chitin synthase and ß-1,3-glucan synthase].
3.2. Acting on the Cell Membrane of A. flavus
... Natural compounds may affect fungal membranes through several mechanisms of action, including:
(1) altering membrane fluidity and permeability;
(2) reducing the proton motive force;
(3) damaging membrane proteins;
(4) inhibiting enzymes related to membrane synthesis;
(5) inducing cytoplasmic membrane degradation.
These alterations in the cell membrane result in the loss of cell homeostasis, leakage of cell components, and, ultimately, cell death. Plant-based natural compounds, such as thymol, carvacrol, and eugenol, have been reported to cause ion imbalance across the cell membrane by dissipating H+ and K+ ion gradients, thus, facilitating the leakage of vital cellular components and inducing water stress, alongside intracellular ATP depletion. Numerous plant-based natural compounds act by binding to membrane ergosterol or inhibiting its biosynthesis.
Ergosterol is the main sterol derivative of fungi and is essential for preserving cell membrane functionality and maintaining the cell’s integrity, viability, and normal growth functions. ... found that coriander (C. sativum L.) EO could bind to the fungal membrane ergosterol and increase ionic permeability to cause membrane damage, leading to cell death. ... C. jensenianum EOs inhibited ergosterol biosynthesis in A. flavus. A similar effect was also detected with natural compounds extracted from dill (A. graveolens L.), tThyme (T. vulgaris L.), and turmeric (C. longa L.). ...
Lipophilic natural compounds, such as phenols and aldehydes, can pass through the double phospholipid bilayer and interact with ergosterol or enter the nucleus and regulate its biosynthetic genes. Ultimately, this causes cell membrane modification, fatty acid profile alterations, and osmotic imbalances, which lead to irreversible damage to the membrane and morphological alteration in hyphae, conidiophores, and conidia and, finally, cell death. The attachment or penetration of the natural compounds via the fungal membranes may prompt the cell structures to disintegrate, causing the fungal cells to become more permeable to the compounds. Phenols, such as thymol, carvacrol, and eugenol, possess a system of delocalized electrons and may also reduce the pH gradient across the cytoplasmic membrane by acting as proton exchangers. The collapse of the proton motive force and the depletion of the ATP pool, resulting from such an effect, can lead to the leakage of iron and intracellular cell constituents and, eventually, cause cell death. Terpenoids also execute their antimicrobial activity at the cell membrane level. It has been reported that terpenoids disrupt the membrane permeability by altering the membrane fatty acid composition and ergosterol content, which results in leakage of the cell contents].
3.3. Acting on the Mitochondria of A. flavus
Mitochondria ... their role in cellular respiration, mitochondria are also associated with other important cellular functions related to virulence, developmental and morphogenetic transitions, drug resistance, ergosterol biosynthesis, and cell wall maintenance. The respiratory chain has been proven to be an effective target for fungicides to control fungal contamination in food crops. Quinone outside-inhibiting (QoI) fungicides, represented by strobilurins, are the most important group of fungicides developed for respiration inhibition (Figure 4). QoI fungicides inhibit fungal pathogens by blocking the transfer of electrons at the quinone outer binding site of the mitochondrial complex III, thus, reducing the production of ATP, which leads to a reduction in the normal metabolic functions and, eventually, cell death. Plant-derived natural compounds and EOs also appear to inhibit fungal growth by damaging mitochondria. For example, (E)-2-hexenal, a leaf volatile produced naturally by green plants as a defense response, was found to inhibit the mitochondrial dehydrogenases and disrupt the mitochondrial energy metabolism of A. flavus.
Honokiol, a phenolic compound isolated from the plant Magnolia officinalis, caused mitochondrial hyperpolarization and dysfunction and led to ATP depletion in A. flavus. Dill (A. graveolens L.) EOs were reported to reduce A. flavus growth by promoting mitochondrial dysfunction and the accumulation of reactive oxygen species (ROS). Tea tree EO was also found to damage the mitochondria of Botrytis cinerea. ... tee tree EOs can destroy the mitochondrial morphology and function in B. cinerea by increasing the mitochondrial membrane permeability and decreasing the enzymatic activities related to the tricarboxylic acid (TCA) cycle (malic dehydrogenase, succinate dehydrogenase, ATPase, citrate synthetase, isocitrate dehydrogenase, and a-ketoglutarate dehydrogenase). ...
Additionally, plant-based natural compounds may be able to damage fungal mitochondria by disrupting the osmotic balance, causing calcium and protons to leak, and, consequently, altering the electrochemical potentials. For example, ... carvacrol was able to induce calcium stress in yeast’s mitochondria through the activation of the target of rapamycin (TOR) signaling pathway. ... the inhibition of mitochondrial enzymes. ... turmeric (C. longa L.) EOs were found to inhibit ATPase, malate dehydrogenase, and succinate dehydrogenase in A. flavus mitochondria, thus, suppressing its contamination in maize. Dill EOs were also found to inhibit fungal ATPase. Phenols and aldehydes in plants have been suggested to be the major natural compounds that interact with mitochondrial enzymes.
4. Antiaflatoxigenic Mechanisms of Plant-Derived Natural Compounds and EOs against A. flavus
Aflatoxin is a polyketide-derived furanocoumarin; a type of carcinogenic and mutagenic secondary metabolite that threatens global food security. ... Baicalein, flavone, hispidulin, kaempferol, and liquiritigenin were found to exclusively exhibit significant antiaflatoxigenic activity (>80% inhibition compared to the control), despite having none or very low antifungal activity. Aflatoxin production inhibitors that do not affect fungal growth may also be useful as selective aflatoxin control agents without significantly interrupting the microbial environment or incurring the rapid spread of resistant strains. ...
... the mitochondria in A. flavus also play critical roles in the biosynthesis of aflatoxin.
Mitochondria are responsible for providing ATP, NADPH, and acetyl-CoA for aflatoxin biosynthesis.
... Mitochondria are also involved in many important fungal cellular activities that affect aflatoxin production, such as regulating fungal development, directing cellular metabolism, and maintaining cellular ROS levels. Many secondary fungal metabolites, including aflatoxin, are synthesized when the fungus finishes its initial growth phase and begins its development stage, which is represented by sporulation. ... Mitochondria also regulate the lipid metabolism in fungal cells. ... lipid peroxidation and oxygenation, which are processes involved in aflatoxin biosynthesis. ... aflatoxin biosynthesis involves a boost in the oxygen uptake of fungal cells, followed by an increase in ROS generation. This change occurs when fungal cells switch from trophophase to idiophase, at which point different secondary metabolic pathways become active. ...
... the antiaflatoxigenic activity of some natural compounds occurs via the inhibition of the carbohydrate metabolism by inhibiting some key enzymes. Alternatively, ... the expression of internal transcriptional regulators (aflR and aflS) in the aflatoxin biosynthetic pathway is inhibited by natural phenols and terpenoids. ...
Article: Suppression of Aspergillus fumigatus Germination by Neutrophils
Is Enhanced by Endothelial-Derived CSF3 Production. INDEX
https://www.aspergillus.org.uk/wp-content/uploads/2023/03/35572651.pdf (13p)
Authors: Wenxin Zhang, Dan He, Yunyun Wei, Shumi Shang, Dong Li* and Li Wang
2022-04-29
anti-ELA2 -- (human neutrophil elastase)
(CWS) ------- Calcofluor white staining
(ELA2) ------ Human neutrophil elastase
(G-CSF) ----- ranulocyte colony-stimulating factor ,
(CSF) 3 gene - colony-stimulating factor
3 (CSF3) - -- colony-stimulating factor
(FBS) -------- fetal bovine serum
(H&E) ------- Hematoxylin and eosin
HPF ---------- high power field
(HRP) -------- horseradish peroxidase
(HSCT) ------ hematopoietic stem cell transplantation
(HUVECs) -- human umbilical vein endothelial cells
(MPO) ------- myeloperoxidase
(NETs) ------- neutrophil extracellular traps
(PAS) --------- periodic acid-Schiff
(PI) ----------- propidium iodide
(PDA) -------- potato dextrose agar
(qPCR) ------ quantitative polymerase chain reaction
(RIPA) ------- radioimmunoprecipitation assay
(ROS) -------- reactive oxygen species
(RT) ---------- Reverse transcription
(SEM) ------- standard error of the mean
A conidium, sometimes termed an asexual chlamydospore or chlamydoconidium, is an asexual, non-motile spore of a fungus.
Infection with Aspergillus fumigatus can cause life-threatening diseases in immunocompromised patients with an unacceptable mortality rate. Angioinvasion is one of the features of severe invasive aspergillosis. Neutrophils are short-lived immune cells regulated by colony-stimulating factor 3 (CSF3) that play a key role in anti-fungal immune responses.
Aspergillosis remains a major health threat despite decades of studies and the availability of a range of anti-fungal treatments (Bandres et al., 2021). The mortality rate among immunocompromised patients, such as stem organ transplant recipients, patients with inherited immunodeficiency or acquired immune deficiency syndrome, can exceed 50% (Beer et al., 2018). Aspergillus fumigatus is the most common cause of aspergillosis and can be found in soil, air, and carbon-rich substrates. People usually inhale hundreds of conidia of A. fumigatus each day, but only in immunocompromised patients can it cause diseases, indicating that the immune system could recognize inhaled mold and avoid germination.
(p2) Multiple cytokines/chemokines play important roles in the recruitment and activation of neutrophils.
The key protein that regulates neutrophil development, proliferation, differentiation, survival, and function is the granulocyte colony-stimulating factor (G-CSF), which is encoded by colony-stimulating factor (CSF) 3 gene (Panopoulos and Watowich, 2008). ...
(p4) Stromal cells are the first line of defense against invading pathogens in the mucosal tissue.
A. fumigatus infection-related lung diseases are usually caused by the colonization of inhaled conidia of A. fumigatus in the lower airways and germinate into hyphae which became invasive. ...
(p7) NETs released by neutrophils mainly contains DNA, histone proteins, fiber, etc., we analyzed the extracellular DNA via staining of propidium iodide (PI). As shown in Supplementary Figure 3, there were more extracellular DNAs in the CSF3 overexpression group and fewer extracellular DNAs in the CSF3 knockout group. In addition, the neutrophils seemed to be less clustered in co-culture with CSF3-/- HUVECs than WT HUVECs (Figure 6D). These results indicate that CSF3 is one of the crucial cytokines in regulating neutrophil function during anti-fungal immune responses. ...
Neutrophils are the first leukocyte type to arrive upon infection, and their proliferation, migration, and functions are tightly regulated by G-CSF (Martin et al., 2021). Neutrophils might be the most important immune cells in terms of the control of A. fumigatus infections in healthy subjects (Lehman and Segal, 2020). A healthy immune system has many negative regulatory mechanisms to constrain the activation and life-span of neutrophils (Azcutia et al., 2017; Silvestre-Roig et al., 2019). This is because the ROS, NETs, and other substance neutrophils released to eradicate pathogens could also cause damage to self-tissue (Mantovani et al., 2011; Papayannopoulos, 2018). In immunocompromised patients, the immune system also loses some of its abilities to self-regulate, and the dysfunctional immune responses and prolonged infections combined together may be the reason why they are actually more prone to autoimmune related diseases (Arason et al., 2010; Roe, 2021). ...
Neutrophils account for approximately 60% of nucleated cells in the bloodstream, and they play a pivotal role in immune responses against invading pathogens, such as bacteria and fungi. Patients with neutrophil disorders always suffer from recurrent or severe bacterial or fungal infections (Martin et al., 2021). One common example is pulmonary aspergillosis, which can only be seen in patients with immune system dysfunctions, such as patients with neutropenia and hematopoietic stem cell transplantation (HSCT) recipients. Neutrophils use several tools to combat invading fungi, such as phagocytosis via the activation of Fc?R, CR3, or PRRs; the release of reactive oxidants and non-oxidants, and generation of NETs with web-like structures (Lehman and Segal, 2020).
However, over-activated neutrophils can cause some non-specific damage to self-tissues, as observed in gout (Vedder et al., 2020), asthma (Ray and Kolls, 2017), pustular psoriasis (Marzano et al., 2019), and rheumatoid arthritis (Thieblemont et al., 2016); neutrophils also could mediate hyper-inflammation accompanied by infections, including SARS-CoV-2 (Cavalcante-Silva et al., 2021). Thus, the activation of neutrophils must be well calibrated and terminated quickly once the pathogens have been eradicated (Lehman and Segal, 2020). In the present study, our results showed that the conidia from A. fumigatus could stimulate stromal cells to secrete cytokines to activate neutrophils, leading to tissue damage after long-term exposure to fungi.
Article: Treatment and prevention of invasive aspergillosis.
INDEX
https://www.uptodate.com/contents/treatment-and-prevention-of-invasive-aspergillosis
Author: Thomas F Patterson, MD, FACP, FIDSA
Section Editor: Carol A Kauffman, MD
Deputy Editor: Keri K Hall, MD, MS
This topic last updated: May 11, 2023.
(To continue reading this article, you must sign in with your personal, hospital, or group practice subscription.)
Invasive aspergillosis is the most common mold infection in immunocompromised hosts.
This infection is caused by Aspergillus, a hyaline mold that is ubiquitous. Exposure to Aspergillus conidia is frequent, ... The most common risk factors for infection include neutropenia and glucocorticoid use, but other risk factors include hematopoietic cell transplantation, solid organ transplantation (particularly lung transplantation), the use of biologic agents, pulmonary diseases, and critical illness.
The most common infecting species is Aspergillus fumigatus complex, but other species complexes that are common causes of disease include A. flavus, A. terreus, and A. niger. Less common species, such as A. nidulans, A. calidoustus, A. lentulus, and many others, have been reported to cause infection in highly immunosuppressed patients. Many of these unusual or "cryptic" species, which are often difficult to identify, are clinically important due to varying susceptibility to antifungal agents. The effective management of invasive aspergillosis includes strategies to optimize prevention, prompt diagnosis, early antifungal treatment, and, in some cases, immunomodulation and surgery. An increasing number of cases of invasive aspergillosis have also been reported as complications of coronavirus disease 2019 infection. ...
The most common clinical manifestation of invasive aspergillosis is pulmonary disease, but other manifestations include central nervous system infection, rhinosinusitis, endocarditis, gastrointestinal disease, and others. ...
Expert guidelines — Optimal management involves early and definitive diagnosis as well as early initiation of antifungal therapy. In addition to antifungal therapy, surgery should be considered for patients with certain manifestations. Reduction of immunosuppression, when feasible, is another important component of management. ...
Article: Novel Antifungal Agents and Their Activity against Aspergillus Species.
INDEX
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7711508/pdf/jof-06-00213.pdf
Roya Vahedi-Shahandashti and Cornelia Lass-Flörl
Institute of Hygiene and Medical Microbiology,
Medical University Innsbruck, 6020 Innsbruck, Austria;
Roya.Vahedi@i-med.ac.at
* Correspondence: cornelia.lass-floerl@i-med.ac.at
Received: 8 September 2020;
Published: 9 October 2020
157 References --- pdf --- 21p
Abstract: There is a need for new antifungal agents, mainly due to increased incidence of invasive fungal infections (IFI), high frequency of associated morbidity and mortality and limitations of the current antifungal agents (e.g., toxicity, drug–drug interactions, and resistance). The clinically available antifungals for IFI are restricted to four main classes: polyenes, flucytosine, triazoles, and echinocandins. Several antifungals are hampered by multiple resistance mechanisms being present in fungi. Consequently, novel antifungal agents with new targets and modified chemical structures are required to combat fungal infections. ...
1. Introduction
Invasive fungal infections (IFI) are responsible for over one million deaths annually,...
This is mainly due to the increasing number of immunocompromised individuals with altered immune function including primary immune deficiency, cancer chemotherapy, HIV/AIDS, hematologic and solid organ transplantation, prematurity, and immune-modulatory medications. The number of at-risk patients and improved diagnostic techniques resulted in an alarming rise in the number of reported fungal infections. Invasive aspergillosis, an infection caused by fungi of the Aspergillus taxon, remains a significant threat, particularly in immunosuppressed patients. The most prevalent Aspergillus species are A. fumigatus, A. flavus, A. terreus, and A. niger. Aspergillus spp. have the capacity to cause a broad range of clinical diseases, from mild and superficial infections, to life-threatening and invasive illnesses with more than 80% mortality rate. Pulmonary aspergillosis is considered the most prevalent manifestation of invasive aspergillosis.
Antifungal drug discovery has been stagnant in the past. Hence, therapeutic possibilities for IFI are limited.
... These (current pharmaceuticals) antifungals have several limitations such as toxicity, drug–drug interactions, variable pharmacokinetics, and reduced bioavailability. The emergence of drug resistance has introduced further limitations. ... The rate of azole-resistant Aspergillus isolates has increased noticeably, contributing to therapeutic failures. The prevalence of azole-resistant clinical isolates of Aspergillus spp. has reached 30% in some regions in Europe ....
Figure 1. Target sites and potential pathways of the novel antifungals.
This diagram of a fungal cell indicates various molecules that can be tackled by antifungal agents (blue boxes), including cell wall, cell membrane, and also intracellular targets such as mitochondria and processes like metabolisms and stress responses.
(Drugs in pre-release trials)
2.1. CD101 (Cidara Therapeutics) (Biafungin) (Rezafungin), ...
2.2. SCY-078 (Formerly MK-3118) .. (Scynexis), a class of semisynthetic derivative of the natural product enfumafungin, ...
2.3. Amphotericin B (AMB) Renovated Structure .. AMB-deoxycholate has a potent wide-spectrum fungicidal activity ...
3. New Antifungal Compounds with Novel Targets in Aspergillus
3.1. T2307 .. or 4-{3-[1-(3-{4-[amino(imino)methyl] phenoxy} propyl) piperidin-4-yl] propoxy} benzamidine .. aromatic diamidines ..
3.2. Fosmanogepix (APX001) ... (formerly E1210, 2-amino-3-(3-{4-[(pyridine-2-yloxy) methylbenzyl}-1-2-isoxazol-5-yl) pyridinium-1-yl] methyl hydrogen phosphate) is a small cell wall-active antifungal ... active against a broad range of pathogenic yeast and molds, including Aspergillus spp., Fusarium spp., and black molds
3.3. ASP2397 (VL-2397) .. is a cyclic hexapeptide natural antifungal compound, cyclo{Asn-Leu-dPhe-[(N5-acetyl-N5-hydroxyOrn)3]- ..
3.4. F901318 (F2G) or Olorofim .. a representative member of .. the orotomides, ... exhibits exceptional potency against a broad range of dimorphic and filamentous fungi, particularly Aspergillus spp. ... F901318 demonstrates efficacy against Aspergillus spp., regardless of species and methods used, which is of significant importance given the increased prevalence of azole-resistant Aspergillus spp. ...
3.5. VT-1598 .. a selective fungal cytochrome P51 (CYP51) enzyme inhibiton ... An in vivo 12-day survival study in a disseminated mouse model of invasive aspergillosis showed 100% survival.
4. Potential Pathways as Targets against Aspergillus.
4.1. Calcium–Calcineurin Signaling Network ... crucial role in the survival and adaptation of fungi.
4.1.1. Tacrolimus (FK506) .. or Fujimycin), a macrolide lactone ... suppresses the phosphatase activity of the calmodulin–CnA–CnB complex, resulting in the inhibition of the transcription factor calcineurin-responsive zinc finger 1 (Crz1) ... may decrease the risk of serious Aspergillus infections ...
4.1.2. Cyclosporin A .. a family of lipophilic cyclic undecapeptides metabolites, ... is a calcineurin inhibitor ....
4.1.3. Geldanamycin .. is a member of the ansamycin antibiotic family with anti-tumor activity ....
4.1.4. Trichostatin A .. Hindering HDACs in pathogenic fungi .. synergistic activity between trichostatin A and caspofungin ...
4.1.5. MGCD290 ... is a.. selective HDAC inhibitor, ... a high MIC (8 to >32 µg/mL) against molds, including Aspergillus spp.
4.2. Ras and Sphingolipid Synthesis Pathways ...
... a lack of Ras signaling pathways in A. fumigatus ... results in decreased fungal growth, decreased cell wall integrity, and loss of virulence.
4.3. Trehalose Synthesis Pathway .. a non-reducing disaccharide, ..one of the pathways that exist in fungi, including C. albicans, C. neoformans, and A. fumigatus but not in humans, ... target for novel antifungal agents.
5. Natural Products as Anti-Aspergillus Agents.
... Rosemary essential oil (REO) ... in vitro activity against A. flavous, with an MIC and minimum fungicidal concentrations (MFC) ...
... Humidimycin, a bacterial ring peptide, ... antifungal activity of 82 essential oils against A. niger, C. albicans, and C. neoformans has been ... A. niger showed weak susceptibility, and 45% of essentialoils displayed activity against C. neoformans isolates.
Recently, an expanding insight into the fungal cellular structures and related processes has contributed to the development of promising antifungal drugs. ...
A Few of the References ...
- Brown, G.; Denning, D.; Gow, N.; Levitz, S.; Netea, M.; White, T.
Hidden Killers: Human Fungal Infections.
Sci. Transl. Med. 2012, 4, 165rv13. [CrossRef] [PubMed]
- Fisher, M.; Hawkins, N.; Sanglard, D.; Gurr, S.
Worldwide emergence of resistance to antifungal drugs challenges human health and food security.
Science 2018, 360, 739–742. [CrossRef] [PubMed]
- Lamoth, F.; Juvvadi, P.; Steinbach, W.
Histone deacetylase inhibition as an alternative strategy against invasive aspergillosis.
Front. Microbiol. 2015, 6, 96. [CrossRef]
Histone deacetylases (HDACs) are enzymes responsible ... control ... the heat shock protein 90 (Hsp90), an essential molecular chaperone for fungal virulence and antifungal resistance.
- Powers, C.; Satyal, P.; Mayo, J.; McFeeters, H.; McFeeters, R.
Bigger data approach to analysis of essential oils and their antifungal activity against
Aspergillus niger, Candida albicans, and Cryptococcus neoformans.
Molecules 2019, 24, 2868. [CrossRef] [PubMed] {DOI}
Overall, while essential oils remain a staple source for antimicrobial inhibitors, improving processes that efficiently identify lead candidates is of great benefit, expediting the next generation of drug discovery.
Product: Drugs, Antifungals for Aspergillus.
INDEX
https://aspergillosis.org/antifungal-drugs/
Author: Elegant Themes
Author URL: http://www.elegantthemes.com
Polyenes
Amphotericin B is often used intravenously to treat systemic fungal infections.
It works by binding to a fungal cell wall component called ergosterol. Amphotericin B is probably the most broad spectrum intravenous antifungal available. It has activity against Aspergillus, Blastomyces, Candida (all species except some isolates of Candida krusei and Candida lusitania), Coccidioides, Cryptococcus, Histoplasma, Paracoccidiodes and most of the agents of zygomycosis (Mucorales), Fusarium and other rarer fungi.
It is not adequately active against Scedosporium apiospermum, Aspergillus terreus, Trichosporon spp., most of the species causing mycetoma and systemic infections due to Sporothrix schenkii. Acquired resistance to amphotericin B has been described in occasional isolates, usually after long term therapy in the context of endocarditis, but is rare.
Amphotericin B can cause many side effects which in some cases can be very severe.
Echinocandins
Echinocandins are often used to treat systemic fungal infections in immune deficient patients – these drugs inhibit the synthesis of glucan which is a specific component of the fungal cell wall. They include micafungin, caspofungin and anidulafungin.
Echinocandins are best administered by intravenous means because of poor absorption.
Caspofungin is very active against all Aspergillus species.
It does not kill Aspergillus completely in the test tube.
There is a very limited amount of activity against Coccidioides immitis, Blastomyces dermatitidis, Scedosporium species, Paecilomyces varioti and Histoplasma capsulata but it is likely that the activity is not sufficient for clinical use.
Triazoles
Itraconazole, fluconazole, voriconazole and posaconazole – the mechanism of action of itraconazole is the same as the other azole antifungals: it inhibits the fungal cytochrome P450 oxidase-mediated synthesis of ergosterol.
Fluconazole is active against most Candida species, with the absolute exception of Candida krusei and partial exception of Candida glabrata, and a small number of isolates of Candida albicans, Candida tropicalis, Candida parapsilosis and other rare species. It is also active against the vast majority of Cryptococcus neoformans isolates. It is active against many other yeasts including Trichosporon beigelii, Rhodotorula rubra, and the dimorphic endemic fungi including Blastomyces dermatitidis, Coccidioides immitis, Histoplasma capsulatumand Paracoccidioides brasiliensis. It is less active than itraconazole against these dimorphic fungi. It is not active against Aspergillus or Mucorales. It is active against skin fungi such as Trichophyton. ...
Itraconazole is one of the most broad spectrum antifungals available and includes activity against Aspergillus, Blastomyces Candida (all species including many fluconazole resistant isolates) Coccidioides, Cryptoccocus, Histoplasma, Paracoccidioides, Scedosporium apiospermum and Sporothrix schenkii. It is also active against all skin fungi. It is not active against Mucorales or Fusarium and a few other rare fungi. It is the best agent against black moulds, including Bipolaris, Exserohilum etc. Resistance to itraconazole is described in Candida, although less often than with fluconazole and also in Aspergillus.
Voriconazole has an extremely broad spectum.
It is active against the vast majority of Candida species, Cryptococcus neoformans, all Aspergillus species, Scedosporium agiospermum, some isolates of Fusarium and a multitude of rather rare pathogens. It is not active against Mucorales species such as Mucor spp, Rhizopus spp, Rhizomucor spp, Absidia spp and others. Voriconazole has become invaluable in the treatment of invasive aspergillosis.
Posaconazole has an extremely wide spectrum of action.
The fungi whose growth are inhibited by posaconazole include Aspergillus, Candida, Coccidioides, Histoplasma, Paracoccidioides, Blastomyces, Cryptococcus, Sporothrix, various species of Mucorales (causing Zygomyetes) and numerous other black moulds such as Bipolaris and Exserohilum. The majority of Aspergillus isolates are killed by posaconazole at clinically relevant concentrations. Acquired resistance to posaconazole does occur in Aspergillus fumigatus and Candida albicans but is otherwise rare.
The side effects of azole drugs are well characterized and there are also some important drug-drug interactions which exclude the use of prescribing certain drugs at the same time.
Absorption
Some of the antifungal drugs (e.g. itraconazole) are taken orally and can be difficult to absorb, particularly if you are on antacid medication (medicine used to treat indigestion, stomach ulcers or heartburn). This is because some acid in the stomach is needed to dissolve the capsules and allow absorption.
In the case of itraconazole the standard advice is to ensure that there is plenty of acid in the stomach by taking a fizzy drink such as cola with the medication (the carbon dioxide that causes the fizz also makes the drink quite acidic). Some people dislike fizzy drinks so substitute a fruit juice e.g.. orange juice.
Itraconazole capsules are taken after a meal and 2 hours before taking antacids.
Itraconazole solution is taken one hour before a meal as it is more easily absorbed.
Product: 10 Best Antifungal Herbs.
INDEX
https://botanicalinstitute.org/antifungal-herbs/
Written by: Siobhan Mendicino
Medical Review by: Daniel Powers, MS
Published on: September 13, 2022
- Garlic
- Turmeric
- Cinnamon
- Ginger
- Olive Leaf
- Echinacea
- Black Walnut
- Goldenseal
- Yellow Dock
- Osha Root
Product: Herbal Teas, London Drugs.
INDEX
(Making a combo tea of 3 or more of the following, 1 to 3 bags of each, with 5 cups of water / each day)
L2725273 --- Stash -- Pomegranate Raspberry Green Tea w/ Matcha - 18s
https://www.londondrugs.com/stash-pomegranate-raspberry-green-tea-with-matcha---18s/L2725273.html
Ingredients: Green Tea
- Green tea
- Hibiscus
- Orange peel
- Chamomile
- natural Pomegranate flavor
- natural Raspberry flavor
- Matcha
L6321608 --- Stash Tea - Cinnamon Apple Chamomile - 20s
https://www.londondrugs.com/stash-tea---cinnamon-apple-chamomile---20s/L6321608.html
Ingredients:
- Cinnamon
- Hibiscus
- Chamomile
- natural apple flavor
L7754088 --- Stash Tea - Spice Dragon Red Chai - 18s
https://www.londondrugs.com/stash-tea---spice-dragon-red-chai---18s/L7754088.html
Ingredients:
- South African Rooibus
- Ginger Root
- Clove Bud oil
- Cinnamon
L1315134 --- Stash Tea - Double Spice Chai - 18s
https://www.londondrugs.com/stash-tea---spice-dragon-red-chai---18s/L7754088.html
Ingredients: Black tea
- Blended Black teas
- Cinnamon
- Ginger Root
- Clove Bud oil
- Allspice
- natural Cinnamon flavor
- Cardamon oil
Product: Essential Oils (EOs).
INDEX
Possibilities:
- Basil
- Carvacrol Oil.
- Cinnamon.
- Echinacea.
- Garlic.
- Ginger.
- Ginkgo.
- Ginseng.
- Hot Peppers.
- Magnolia.
- Olive Leaf.
- Onions.
- Osha Root.
- Parsley, Chinese.
- Saw Palmetto.
- Tea Tree.
- Turmeric.
- Walnut, Black.
- Yellow Dock.
- ======
- Caspofungin,
drug.
Product: Carvacrol-Oregano capsules.
INDEX
https://www.amazon.com/130-Carvacrol-Concentration-Essential-Softgels/dp/B09N6FC9ZD
130 mg Carvacrol - 150 mg Oregano Oil per Softgel.
World Highest Concentration Oregano Oil Capsule. Zane Hellas Oregano Oil.
Softgel Contains 30% Greek Essential Oil of Oregano. 60 Softgels.
Date First Available ? : ? December 6, 2021
Manufacturer: Zane Hellas
Country of Origin: Greece
Retail: $19.49
60 softgels
No Import Charges & $7.55 Shipping to Canada
FEATURES:
-
From the Best Well Known Variety and Indigenous to the Greece Region.
- Zane Hellas Oregano Softgels contain - 30% Oregano Oil - 70% Extra Virgin Greek Olive Oil
We Provide CoA with every Order -
-
Effectiveness, Carvacrol is the Main Compound in Oregano Oil.
Superior Carvacrol Rating of 130 mg per Softgel.
The Higher Content of Carvacrol In Oregano Oil, Resulting in Higher Effectiveness.
-
Good Source of Polyphenols - High in Antioxidants
- Rich in Phenolic Compounds - Free of Alcohol and Additives
Dosage: Take 1 daily, preferably after a meal.
Product: Cinnamon Leaf EO.
INDEX
https://www.amazon.com/dp/B0B4PPC5DD/ref=pe_386300_440135490_TE_simp_item_image
HBNO Store: https://www.amazon.com/stores/HBNO/
page/5FB3AD09-E710-41F5-9CC0-93BA27B56185?
ref_=ast_bln&store_ref=bl_ast_dp_brandLogo_sto
Date First Available : June 21, 2022
From: SRI LANKA: Obtained by steam distilling the leaves of Cinnamomum Verum
and packaged in an amber glass bottle with a side glass dropper.
Size: 4 Fl Oz
Retail: USD $9.99 ---
No Import Charges & $7.48 Shipping to Canada
FEATURES:
-
PREMIUM QUALITY CINNAMON LEAF ESSENTIAL OIL FROM SRI LANKA
- Obtained by steam distilling the leaves of Cinnamomum Verum and packaged in an amber glass bottle with a side glass dropper.
-
REDISCOVER WARMTH AND COMFORT
Cinnamon Oil has a warm, spicy, and comforting scent ...
-
Cinnamon oil is a versatile gem
- perfect for soaps, shampoos, homemade cleaning solutions, ....
-
BOTTLED IN THE USA
Strategically located in Northern California, ... in our vast 100,000 sq foot facility.
Product: Ginger EO.
INDEX
https://www.amazon.com/gp/product/B08FVHG7X9/ref=ppx_od_dt_b_asin_title_s00?ie=UTF8&psc=1
Handcraft Blends Store: https://www.amazon.com/stores/HandcraftBlends/
page/B34DF280-3214-4A3D-A72B-9D78982F0941?ref_=ast_bln&store_ref=bl_ast_dp_brandLogo_sto
Date First Available : August 14, 2020
Retail: USD $17.95
No Import Charges
FEATURES:
-
100% PURE & NATURAL GINGER OIL
- Each essential oil is tested by an independent lab which is why every bottle comes with a Quality Guaranty.
-
PREMIUM GRADE & QUALITY
– All Handcraft Blends Essential Oils are tested by an independent lab to test the efficacy of each oil.
Each oil is tested for its constituents as well as to have no fillers, additives and to be undiluted.
-
HIGH QUALITY GLASS BOTTLE AND DROPPER
– Our essential oil comes in an amber glass bottle to keep out UV rays and protect the oil against sunlight.
We also provide a glass dropper, so you get the exact amount of oil without any waste.
-
GINGER OIL BLENDS WELL WITH
– Bergamot, Cedarwood, Cassia, Eucalyptus, Frankincense, Lemon, Orange, and Rosemary.
-
BOTTLED IN THE USA
Our oils are sourced from the best regions all over the world to bring you the best and finest.
Product: Magnolia EO.
INDEX
https://kiaromashop.ca/products/champaca-red-absolute-oil-magnolia
Champaca Red Absolute Oil (Michelia champaca)
Origin: India
Extraction Method: Hexane free solvent extraction of flowers
Main Constituents: methyl benzoate (30.3%), 1,8-cineole (22.8%), indole (16.6% and B-elemene (10.4%)
Appearance and Consistency: Reddish amber, slightly thick transparent liquid
We are currently offering FREE SHIPPING* within Canada on all orders with subtotals over $99.00
Ki Aroma, PO Box 16, Sooke, BC V9Z 0E4 --- 1-800-683-6739
LINK 2: Magnolia Michelia alba.
https://www.doterra.com/CA/en/p/doterra-magnolia-touch-oil
Magnolia oil primarily contains linalool, combined with Fractionated Coconut Oil,
Roll Magnolia Touch essential oil blend on the bottoms of the feet to create a calming, relaxing atmosphere.
PIP (Product Information Page) - https://media.doterra.com/ca-otg/en/pips/doterra-touch-magnolia-oil.pdf
800.411.8151 --- Press 1 for English, then 4 for Canada Market --- CONTACT
Phone lines: Monday-Friday 8:00 am - 6:00 pm (MST)
LINK 3: Michelia Alba, Magnolia Alba
White Champaca, White Jade Orchid, White sandalwood
https://www.lovingessentialoils.com/blogs/essential-oil-tips/
magnolia-essential-oil-uses-benefits-recipes
... distilled from the petals of the magnolia tree. ...
is costly due to the difficulty growing and harvesting the flower blossoms.
1043 Garland Ave Unit C #760, San Jose, CA 95126
Jennifer Lane - Certified Aromatherapist on 11/21/2023
jen @ lovingessentialoils.com
(Many Recipes, free manual)
LINK 4: Complete Guide to Magnolia Essential Oil.
https://volantaroma.com/blogs/guides/magnolia-essential-oil-guide
By Saga Vigre Bohinen
Oct 23, 2023
Sågverksgatan 15, 652 21 Karlstad, Sverige
support@volantaroma.com
(NO stores in Canada)
LINK 5: Magnolia Essential Oil: Potential Benefits & Uses.
https://naturallydaily.com/magnolia-essential-oil/
by Editorial Team --- naturallydaily@gmail.com
May 11, 2022
The magnolia was named by the famous Swedish botanist Carl Linneaus in 1737 in honor of the French botanist, Pierre Magnol (1638-1715). Magnolias are, however, one of the most primitive plants in evolutionary history, and fossil records show that magnolias were present in Europe, North America and Asia over 100 million years ago.
Today, magnolias are indigenous only to southern China, Malaysia, Thailand, and the southern US
The earliest western record of Magnolias in cultivation is found in Aztec history where there are illustrations of what we now know are the rare Magnolia dealbata. This plant survives only in a few places in the wild, and, although climate change is largely to blame, the Aztecs cut the flowers for festivals, and this prevented the plants from seeding. The plant was found by a Spanish explorer called Hernandez in 1651.
There are about 80 species of Magnolia, of which about half are tropical.
In their native countries, magnolia trees can grow up to 80 feet tall and 40 feet wide.
They bloom in spring, with the flowers reaching their peak in summer.
The petals are traditionally hand-picked, and harvesters have to use ladders or scaffolds to reach the prized flowers.
Champaca Red Absolute Oil (Magnolia) has a complex, enticing, exotic, sublime floral aroma layered beneath nuances of apricot, honey and mango. When used in Aromatherapy Champaca Red Absolute is calming, soothing, relaxing, sense enhancing, and is both spiritually uplifting and euphoric. This enticing aroma has traditionally been used in luxury perfumes, decadent soaps, lotions, skin care products and fine incense.
doTERRA Magnolia essential oil comes from Michelia x alba, a variety of magnolia plant that flourishes in Southeast Asia. Magnolia trees can grow nearly 30.5 meters tall and bear fragrant white or light pink flowers twice per year. The harvesting process became easier when magnolia farmers started growing the trees in giant wooden or cement containers, causing the trees to grow outward rather than up. Magnolia blossoms are harvested in the summer and then again in late fall or early winter and go through a steam distillation process to produce the ... Magnolia oil.
Magnolia essential oil can be applied topically or diffused for stress relief or aromatherapy benefits.
Magnolia has a sweet floral scent that promotes feelings of relaxation and peace while reducing symptoms of anxiety and depression when inhaled. When applied topically, it helps improve skin's elasticity, tone, texture, brightness and appearance by moisturizing dry patches.
Like lavender and bergamot essential oil, magnolia primarily contains linalool.
Linalool rich oils have powerful soothing and relaxing benefits to the emotions and skin.
Magnolia flower essential oil contains about 73% linalool and small amounts of a-terpineol, ß-pinene and geraniol.
As a perfume, it can be used on the pulse points, wrists, throat, behind the ears and inside your elbows.
... roll doTERRA Touch Magnolia into your palms and inhale the scent by cupping your hands over your nose and delight in the fresh, relaxed aromatic atmosphere as you wind down ....
Blends with: Bergamot, Black Pepper, Cardamom, Cedarwood, Cinnamon, Frangipani, Frankincense, Helichrysum,
Jasmine, Neroli, Orange, Patchouli, Petitgrain, Rose, Sandalwood, Vanilla, Vetiver and Ylang Ylang.
Therapeutic Uses:
Scars, wounds, muscular aches, abdominal cramp, intestinal spasm, fear-induced anxiety,
insomnia, inability to communicate, stress-related tension, depression
(from The Complete Book of Essential Oils and Aromatherapy by Valerie Ann Wormwood, page 601).
Magnolia Essential Oil Benefits
- Ease anxiety
- Increase appetite
- Increase confidence
- Relaxes the mind and body
- Improve memory and focus
- Relieve feelings of depression
- Calm worry, tension, and feelings of stress
- Acts as a natural sedative (great for bedtime!)
- Creates a calm and serene atmosphere
- Encourage better communication
- Uplifts when feeling down and grounding when anxious
- Insect deterrent: Applying a product scented with magnolia oil can protect your skin from insect bites.
- has antifungal properties
- Soothe cough
- Ease inflammation
- Heal dry skin
- Reduce scars
- Help heal minor wounds
- Soothes and moisturizes the skin
- Alleviate rashes, hives, eczema, and psoriasis
- Stimulates the generation of new cells, beneficial for skin
- Stimulate the lymphatic system
- Soothes aches and pains - has analgesic properties
- Promotes circulation and relieves congestion
- Eases discomfort from abdominal or menstrual cramps (antispasmodic properties)
- Has anti-aging properties.
Magnolia oil is claimed to prevent certain cancers, such as colon cancer and liver cancer.
It’s because the oil contains magnolol that can prevent the spread of certain cancer cells. [2]
The oil is also great for preventing certain cancers such as leukemia, colon cancer, and prostate cancer.
https://onlinelibrary.wiley.com/doi/abs/10.1002/jcb.10059
Magnolia oil can help treat Alzheimer’s disease.
The magnolol component helps with cognitive ability by stimulating the acetylcholine level in the brain. [4]
https://onlinelibrary.wiley.com/doi/abs/10.1002/ptr.3178
Besides, the oil contains another component named Honokiol.
It helps in improving brain activity, especially memory.
Honokiol ... has certain anxiolytic qualities to keep the hormonal balance in your body. [8]
https://www.sciencedirect.com/science/article/abs/pii/S0278584607004101
Magnolia essential oil contains the naturally occurring corticosteroids in it.
Thus, it can treat respiratory conditions like asthma. [5]
https://pubs.acs.org/doi/abs/10.1021/np800494e
This oil can decrease the build-up of fat around the liver.
Antifungal effects of magnolia essential oil - 2017, 2021
In one study (
https://www.sciencedirect.com/science/article/abs/pii/S0956713516305503?via%3Dihub),
magnolia essential oil was found to have antifungal effects against various species of fungus and mold including Aspergillus niger, Aspergillus flavus, Penicillium, Rhizopus, Fusarium and Cladosporium.
Another study (https://pubmed.ncbi.nlm.nih.gov/32836380/)
looked at the effects of magnolia oil vapor on both mold growth and human brain activity. ...
found that magnolia oil vapor reduced mold growth and also enhanced alpha brain waves in human subjects, enhancing pleasant feelings of relaxation.
Product: Tea Tree EO.
INDEX
https://www.rockymountainsoap.com/pages/tea-tree-oil-naturalpedia
Author: Rocky Mountain Soap
LINK 2: 14 Everyday Uses for Tea Tree Oil
https://www.healthline.com/nutrition/tea-tree-oil
Written by The Healthline Editorial Team
Medically reviewed by Debra Rose Wilson, Ph.D., MSN, R.N., IBCLC, AHN-BC, CHT
Updated on February 6, 2023
LINK 3: Terpinen-4-ol from tea tree oil prevents Aspergillus flavus growth in postharvest wheat grain.
https://www.sciencedirect.com/science/article/abs/pii/S0168160524001855
International Journal of Food Microbiology
-- School of Biological Engineering, Henan University of Technology,
Zhengzhou 450001, People's Republic of China
-- School of International Education, Henan University of Technology,
Zhengzhou 450001, People's Republic of China
Available online 9 May 2024
Volume 418, 16 June 2024,
83 References
LINK 4: The significance of essential oils and their antifungal properties
in the food industry: A systematic review.
https://www.sciencedirect.com/science/article/pii/S2405844023085948
Zohreh Abdi-Moghadam, Yeganeh Mazaheri, Alieh Rezagholizade-shirvan, Maryam Mahmoudzadeh,
Mansour Sarafraz, Mahnaz Mohtashami, Samira Shokri, Ahmad Ghasemi, Farshid Nickfar,
Majid Darroudi, Hedayat Hossieni Zahra Hadian, Ehsan Shamloo, Zeinab Rezaei
Available online 29 October 2023 -- 22p
Extracted from the leaves of the Melaleuca Alternifolia tree, native to Australia.
Main Constituents: Terpinen-4-ol, terpinene, a-terpinene
Terpinen-4-ol increases the activity of your white blood cells, which help fight germs.
Works against Bacteria, fungus, inflammation, and viruses.
Scientifically proven to be an effective acne, athlete's foot, and Cold sores treatment
USES include:
- Hand sanitizer against E. coli, S. pneumoniae, H. influenzae, others.
- Insect repellent against flies, ants, mosquitoes, ....
- Deodorant against sweat bacterial odors.
- Minor cuts and scrapes cleansed against S. aureus and other bacteria.
- Wound healing increased by reducing inflammation and stimulating the activity of white blood cells.
- Acne benefit by helping reduce the amount and overall severity of acne.
- Nail fungus cure in up tp 60% within 6 months.
- Mouthwash to reduce the inflammation of gingivitis and plaque-causing bacteria.
- All-purpose surface cleanser without chemical residues.
- Reduce the severity of contact dermatitis, rosacea, bug bites, blepharitis symptoms.
- Dandruff (Candida albicans (yeast)) reduction when added to shampoo.
- Athlete’s foot (tinea pedis) improved recovery when combined with other treatments.
- Eliminating mold on fruits and vegetables with a 5–10 drops rinse.
- Psoriasis symptoms can be eased by combining 10–15 drops of tea tree oil with 2 tablespoons of melted coconut oil.
Certain EOs, including tea tree, thyme, coriander, peppermint, and clove oils, have the capacity to bind to ergosterol and inhibit yeast growth.
According to the Food and Agriculture Organization of the United Nations (FAO), foodborne molds and their toxic byproducts are responsible for approximately 25% of agricultural food losses worldwide. Certain fungal genera, including Fusarium, Penicillium, Aspergillus, and Alternaria, are capable of producing secondary metabolites known as mycotoxins. Some of these mycotoxins can be lethal and exhibit carcinogenic, mutagenic, teratogenic, and immunosuppressive properties in both humans and animal. ... Various toxins have been identified in food products, including aflatoxin and ochratoxin.
Ochratoxins can be produced by Aspergillus ochraceus in corn, wheat, barley, flour, rice, oats, rye, beans, peas, green coffee beans, pancake mix, and mixed feeds. ... Marjoram, mint, basil, coriander, thyme, dill, and rosemary EOs reduced aflatoxin production by A. flavus by 96 %. ... oregano EOs have shown significant reductions in spores of Aspergillus terreus and Penicillium expansum, while lavender EOs have similarly reduced spores of Fusarium oxysporum and P. expansum.
Terpinen-4-ol was identified as the main volatile antifungal constituent of TTO, demonstrating promising application in preventing AAspergillus flavus spoilage in postharvest grains. Metabolomics and biochemical analyses showed that terpinen-4-ol exerts its antifungal activity against Aspergillus flavus through several mechanisms. It disrupts the integrity of the cell wall and cytoplasmic membrane, interferes with multiple metabolic pathways, induces mitochondrial dysfunction, and causes DNA damage.
Product: Drug - Caspofungin (Monograph).
INDEX
https://www.drugs.com/monograph/caspofungin.html
Written by ASHP
-- .American Society of Health-System Pharmacists (ASHP)
Aug 25, 2023.
2001 - January 26 -- Type 1 - New Molecular Entity
2016 - Decemb 30 -- Type 5 - New Formulation or New Manufacturer
Alternatives: https://www.drugs.com/compare/caspofungin
LINK 2: Caspofungin injection.
https://my.clevelandclinic.org/health/drugs/21421-caspofungin-injection
... will give you this injection in a hospital or clinic setting.
This medicine may cause serious skin reactions.
2024
LINK 3: Caspofungin (from Wikipedia)
https://reference.medscape.com/drug/cancidas-caspofungin-342584#5
for injection was initially approved by both the US Food and Drug Administration (FDA),
and the European Medicines Agency (EMA) in 2001
The mean duration of therapy in previous studies was 34 days.
Some people were even healed by a one-day treatment.
However, a few people were treated for as long as 162 days
LINK 4: caspofungin (Rx)
https://reference.medscape.com/drug/cancidas-caspofungin-342584
LINK: Interactions - Serious - Use Alternative (6), Monitor Closely (20), Minor (9)
LINK: Adverse Effects - (Very Many), Postmarketing Reports
LINK: Warnings & Cautions:
Brand name: Cancidas
Drug class: Echinocandins
VA class: AM700
Chemical name: 1-[(4R,5S)-5-[(2-Aminoethyl)amino]-N2-(10,12-dimethyl-1-oxotetradecyl)-4-hydroxy-l-ornithine]-5-[(3R)-3-hydroxy-l-ornithine]pneumocandin B0 diacetate (salt)
CAS number: 179463-17-3
Aspergillosis
Treatment of invasive aspergillosis in adults, adolescents, and children = 3 months of age whose disease is refractory to, or who are intolerant of, other antifungals. Has not been evaluated for initial therapy of invasive aspergillosis.
IDSA and other clinicians consider IV voriconazole the drug of choice for primary treatment of invasive aspergillosis in adult and pediatric patients, including HIV-infected patients; IV amphotericin B or isavuconazonium (prodrug of isavuconazole) usually recommended as alternatives for primary treatment.
For salvage therapy in patients refractory to or intolerant of primary antifungal therapy, IDSA recommends IV amphotericin B, an IV echinocandin (caspofungin, micafungin), oral or IV posaconazole, or itraconazole oral suspension. IDSA states that echinocandins (either alone or in conjunction with other antifungals) may be effective for salvage therapy of invasive aspergillosis; however, routine use of echinocandin monotherapy not recommended for primary treatment of invasive aspergillosis.
Consult current IDSA clinical practice guidelines available at [http://www.idsociety.org/] and current CDC, NIH, and IDSA clinical practice guidelines for prevention and treatment of opportunistic infections in HIV-infected individuals available at [http://www.aidsinfo.nih.gov/] for additional information on management of aspergillosis.
Candidemia and Other Invasive Candida Infections
Treatment of candidemia and certain other invasive Candida infections (intra-abdominal abscess, peritonitis, pleural space infections) in adults, adolescents, and children =3 months of age. A drug of choice.
Has been effective in C. albicans, C. glabrata, C. krusei, C. parapsilosis, and C. tropicalis infections, principally in nonneutropenic patients.
Manufacturer states safety and efficacy not established for treatment of endocarditis, osteomyelitis, or meningitis caused by Candida.
For treatment of candidemia in nonneutropenic patients or for empiric treatment of suspected invasive candidiasis in nonneutropenic patients in intensive care units (ICUs), IDSA recommends
an IV echinocandin (anidulafungin, caspofungin, micafungin) for initial therapy;
IV or oral fluconazole is an acceptable alternative for initial therapy in selected patients,
----- including those who are not critically ill and unlikely to have infections caused by fluconazole-resistant Candida.
...
Candida auris Infections
Treatment of infections caused by C. auris, an emerging pathogen associated with potentially fatal candidemia or other invasive infections.
First identified in 2009, C. auris has now been reported as the cause of serious invasive infections (including fatalities) in multiple countries worldwide (e.g., Japan, South Korea, India, Kuwait, South Africa, Pakistan, United Kingdom, Venezuela, Colombia, US). As of May 2017, a total of 77 clinical cases of C. auris had been reported to CDC from 7 different states. May be difficult to identify using standard in vitro methods. Large percentage of C. auris clinical isolates are resistant to fluconazole; multidrug-resistant isolates with reduced susceptibility or resistance to all 3 major classes of antifungal agents (azoles, polyenes, echinocandins) reported.
CDC issued interim recommendations regarding laboratory diagnosis, treatment, and infection control measures for suspected or known C. auris infections. Based on limited data available to date, CDC recommends an IV echinocandin (anidulafungin, caspofungin, micafungin) for initial treatment of invasive C. auris infections (e.g., bloodstream or intra-abdominal infections) in adults. CDC states a switch to IV amphotericin B (lipid formulation) could be considered if patient is clinically unresponsive to the echinocandin or if fungemia persists >5 days. Consultation with an infectious disease specialist highly recommended.
CDC recommends that infection control measures be observed for all patients with cultures yielding C. auris, including those with positive cultures only from noninvasive body sites.
If C. auris infection is suspected, immediately contact state or local public health authorities and the CDC (candidaauris@cdc.gov) for guidance. Consult interim recommendations and most recent information from CDC available at [Web] for additional information on diagnosis and management of C. auris infections.
Administration
Administer by slow IV infusion. Do not administer by rapid IV injection.
Do not admix or infuse concomitantly with other drugs.
Must be reconstituted and diluted prior to administration.
Use strict aseptic technique since the drug contains no preservatives.
Do not use diluents containing dextrose (e.g., 5% dextrose injection).
Reconstitution
Prior to reconstitution, allow vial of lyophilized caspofungin to reach room temperature.
Reconstitute 50- or 70-mg vials by adding 10.8 mL of 0.9% sodium chloride injection, sterile water for injection, bacteriostatic water for injection (with methylparaben and propylparaben or 0.9% benzyl alcohol) to provide solutions containing 5 or 7 mg/mL, respectively. Mix gently until drug dissolves completely and a clear solution obtained.
The 50- and 70-mg reconstituted vials are formulated to provide a slight overfill, yielding 54.6 and 75.6 mg, respectively, of caspofungin. The vials are for single-use only; discard any unused reconstituted solution.
Rate of Administration
Administer by IV infusion over approximately 1 hour.
DOSAGE: Aspergillosis, Adults.
A single 70-mg loading dose on day 1, followed by 50 mg once daily.
Efficacy of dosages >50 mg once daily not evaluated.
Duration of treatment is based on severity of patient's underlying disease, recovery from immunosuppression, and clinical response. IDSA recommends that treatment of invasive pulmonary aspergillosis be continued for at least 6–12 weeks.
Geriatric Patients
Adults: 65 years of age: Dosage adjustments not necessary.
LINK: Detailed Caspofungin dosage information
https://www.drugs.com/dosage/caspofungin.html
Usual Adult Dose for Aspergillosis - Invasive
Loading dose: 70 mg IV on Day 1
Maintenance dose: 50 mg IV once a day thereafter
Comments:
Treatment duration should be based on the severity of the patient's underlying disease,
recovery from immunosuppression, and clinical response.
Patient advice:
Report signs/symptoms of hypersensitivity reaction (including rash, facial swelling, angioedema, pruritus, sensation of warmth, bronchospasm) ...
Product: Opdivo + Yervoy, Herbal Combo.
INDEX
https://www.opdivo.com/advanced-kidney-cancer/opdivo-yervoy-combination
LINK 2: Side Effects Booklet.
https://www.opdivo.com/assets/commercial/us/
opdivodtc/en/pdf/lung/Side_Effect_Tracker.pdf
Separate indications for a variety of diseases.
17 pages --- Bristol-Myers Squibb Company.
Daily Check-In Table, 2 weeks
7356-US-2300118 03/23
LINK 3: Full Prescribing Information.
https://packageinserts.bms.com/pi/pi_opdivo.pdf
54 pages --- Revised: March 2024
LINK 4: Why Would Opdivo and Yervoy Be Used Together?
https://www.healthline.com/health/drugs/opdivo-and-yervoy
Written by Jill Seladi-Schulman, Ph.D
Medically reviewed by Patricia Weiser, PharmD
2024-04-18
OPDIVO (10 mg/mL) and YERVOY (5 mg/mL) are injections for intravenous (IV) use.
personal Care Counselor, visit www.OPDIVOwithYou.com or call 1-855-OPDIVO-1 (1-855-673-4861) to request a registration form.
Opdivo is not known to interact with other medications, herbs, supplements, or foods.
Opdivo and Yervoy are immunotherapy drugs that are used to treat certain types of advanced cancer.
Immunotherapy drugs help your immune system detect and destroy cancer cells.
More specifically, Opdivo and Yervoy are immune checkpoint inhibitors (ICIs).
ICIs work by blocking checkpoint proteins on immune cells.
Normally, checkpoint proteins prevent your immune cells from attacking healthy cells.
But cancer cells can use them to avoid detection.
About 50%Trusted Source of cancers don’t respond to immune checkpoint inhibitor therapy with just one drug, which is called monotherapy. Because Opdivo and Yervoy have different targets, they can be used together to help improve treatment outcomes.
Opdivo and Yervoy target two different checkpoint proteins.
Opdivo targets PD-1, while Yervoy targets CTLA-4.
By blocking these checkpoint proteins, Opdivo and Yervoy help your immune cells find and destroy cancer cells.
OPDIVO and YERVOY are medicines that may treat certain cancers by working with your immune system.
OPDIVO and YERVOY can cause your immune system to attack normal organs and tissues in any area of your body and can affect the way they work. Some of these problems may happen more often when OPDIVO is used in combination with another therapy.
OPDIVO® (nivolumab) is a prescription medicine used in combination with YERVOY® (ipilimumab) as a first treatment for adults with a type of advanced stage lung cancer (called non-small cell lung cancer) when your lung cancer has spread to other parts of your body (metastatic) and your tumors are positive for PD-L1, but do not have an abnormal EGFR or ALK gene.
OPDIVO and YERVOY can cause problems that can sometimes become serious or life-threatening and can lead to death.
Serious side effects may include lung problems; intestinal problems; liver problems; hormone gland problems; kidney problems; skin problems; eye problems; problems in other organs and tissues; severe infusion reactions; and complications of stem cell transplant, including graft-versus-host disease (GVHD), that uses donor stem cells (allogeneic).
Call or see your healthcare provider right away for any new or worsening signs or symptoms.
Clinical Trial Results
In the primary analysis at 2 years (25.2 months) 67% of patients on OPDIVO + YERVOY
were alive compared to 56% of patients being alive on SUTENT.
OPDIVO + YERVOY was proven to lower the risk of dying
by 37% compared to SUTENT.
Half of the patients on SUTENT were alive at 25.9 months
compared to more than half being alive on OPDIVO + YERVOY.
Product:
INDEX
INDEX
LINK to
INDEX page
(offline)
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Articles on the Internet are transitory.
The publishers may remove them, change sites, change URLs, or change titles.
For the purpose of maintaining an availability of these articles for myself and you, I have reprinted parts in the relevant monographs with authorship maintained, coding simplified for error-free loading and minimal file size, and a LINK to the original document. Identity trackers and advertising bots have been removed from the original bloated and manipulative coding. NOTHING in writing is absolute; don't treat human opinion, projection, and observation as an Idol. Doing so can kill you, or worse, have you impose abuse on others.
I gathered and researched this data, mediated with the Grace of God through prayer as a benefit in my integrating discovered available digital information which would acquaint me with the overall content related to the health issues. I have found that God is ALWAYS available when we are Reverent in our Asking, open-minded in our Listening, and, Assertive in our Choice of Action. Doctors did not expect me to survive birth. In the past 25 years, medical and health "experts" have cautioned or directed me, more than 14 times, that I had little time left to live, or would die ... because THEY did not understand my challenges, were not motivated to professionally diagnose, or, chose to superstitiously recall as absolute previously flawed training. I am still alive beyond age 70. With the assistance of God, my Personality, the research and a lack of dismissiveness of a number of persons ... I have found resolution to numerous health challenges. This has enabled me to assist many others who had been abandoned, brainwashed, or traumatized. May my experience and successes also empower you. This is one document which you may find helpful as a BASIC introduction to maintaining and improving YOUR health.
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