Hermetica Superfood Encyclopedia
The Short Answer
Xylaria nigripes contains nigriterpene C, which inhibits neuroinflammatory markers iNOS and COX-2 with IC50 values of 8.1-16.6 μM in microglial cells. The fungus enhances GABA activity and p-CREB expression in hippocampus, supporting its traditional use for sleep and mood disorders.
CategoryMushroom
GroupMushroom/Fungi
Evidence LevelModerate
Primary KeywordXylaria Nigripes benefits
Synergy Pairings4
Xylaria Nigripes — botanical close-up
Health Benefits
Modulates the immune system, enhancing the body’s ability to defend against pathogens.
Exhibits antimicrobial activity, acting as a natural agent against bacteria, fungi, and viruses.
Reduces systemic inflammation, making it beneficial for various inflammatory conditions.
Provides antioxidant protection by scavenging free radicals and shielding cells from oxidative stress.
Origin & History
Natural habitat
Xylaria nigripes, a unique medicinal fungus, is primarily found in East Asia, particularly China, where it grows on decaying wood. Valued for its potent immune-modulating, antimicrobial, and anti-inflammatory properties, it has been traditionally used to support overall well-being. This mushroom offers significant functional benefits for cellular defense and systemic balance.
“Xylaria nigripes has been utilized in traditional medicine for centuries, particularly in Asia, for its health-promoting effects. Its historical applications are now being investigated by modern research for potential immune function support, inflammation reduction, and protection against microbial infections.”Traditional Medicine
Scientific Research
Preliminary research, primarily in vitro and animal studies, focuses on Xylaria nigripes' potential for immune support, antimicrobial effects, and anti-inflammatory properties. While promising, further human clinical trials are required to validate these therapeutic applications and establish optimal dosages.
Preparation & Dosage
Traditional preparation
Supplements
Available in capsules, powders, or tinctures for immune support, antimicrobial action, and overall wellness.
Functional Foods
Incorporated into wellness drinks, soups, or broths for daily consumption.
Traditional Use
Employed in natural remedies for treating infections, inflammation, and promoting vitality.
Skincare
Added to topical formulations for its antimicrobial and anti-inflammatory properties.
Recommended Dosage
000 mg of Xylaria nigripes extract daily, or as directed by a healthcare provider
Consume 500–1,.
Nutritional Profile
- Polysaccharides & Beta-glucans: Immune-modulating and anti-inflammatory compounds.
- Triterpenes: Bioactive compounds with anti-inflammatory and potential antimicrobial effects.
- Antioxidants: Compounds that protect cells from oxidative damage.
- Trace Minerals: Support cellular health and enzymatic functions.
How It Works
Mechanism of Action
Nigriterpene C inhibits lipopolysaccharide-induced iNOS and COX-2 expression in BV-2 microglial cells with IC50 values of 8.1 ± 2.3 μM and 16.6 ± 5.5 μM respectively. The fungus increases p-CREB expression in rat hippocampus and elevates GABA content while inhibiting GABA-transaminase and enhancing glutamic acid decarboxylase. Additional compounds like fomannoxin alcohol and scytalone contribute to neuroprotective effects by reducing oxidative stress and preserving mitochondrial membrane potential.
Clinical Evidence
Current evidence is limited to in vitro studies using PC12 and BV-2 cell models, plus animal studies in rats subjected to REM sleep deprivation. Mycelia extracts improved PC12 cell viability from 44.9% to 63.8-68.5% at 100 µg/mL concentrations and reduced apoptosis from 13.9% in oxidative stress models. Rat studies showed reduced escape latencies in Morris water maze tests and increased hippocampal p-CREB expression (0.5825 vs. 0.3044 in controls). No human clinical trials have been conducted, making therapeutic claims preliminary and requiring further validation.
Safety & Interactions
No safety concerns, drug interactions, or contraindications have been reported in available studies. Isolated compounds showed no significant cellular toxicity in BV-2 microglial cell assays. Mycelia extracts demonstrated protective rather than toxic effects in PC12 cell models at tested concentrations up to 100 µg/mL. However, the absence of human safety data means potential interactions with medications, pregnancy safety, and long-term effects remain unknown.
Synergy Stack
Hermetica Formulation Heuristic
Adaptogenic base
Immune & Inflammation | Gut & Microbiome
Also Known As
Wu Ling ShenZylariaXPCE extract
Frequently Asked Questions
What is the active compound in Xylaria nigripes?
The primary bioactive compound is nigriterpene C, which inhibits inflammatory markers iNOS and COX-2 with IC50 values of 8.1-16.6 μM. Other compounds include fomannoxin alcohol, scytalone, and 3-butyl-7-hydroxyphthalide.
How does Xylaria nigripes help with sleep?
The fungus enhances GABA activity by inhibiting GABA-transaminase and increasing glutamic acid decarboxylase activity. It also increases p-CREB expression in hippocampus, which may improve sleep quality and reduce insomnia.
What is Wu Ling Shen used for in traditional Chinese medicine?
Wu Ling Shen is traditionally used for treating insomnia, depression, anxiety, and mood disorders. It grows on termite nests of Odontotermes formosanus and has been valued for its calming and sleep-promoting properties.
Are there clinical studies on Xylaria nigripes?
No human clinical trials exist currently. Research is limited to animal studies in rats and in vitro cell culture models using PC12 and BV-2 cells, requiring further validation in humans.
Is Xylaria nigripes safe to use?
No toxicity has been reported in cell culture studies at concentrations up to 100 µg/mL. However, human safety data is lacking, so potential drug interactions and long-term effects remain unknown.
Does Xylaria nigripes interact with common immunosuppressant medications?
Because Xylaria nigripes modulates and enhances immune function, it may potentially interfere with immunosuppressant drugs prescribed after organ transplants or for autoimmune conditions. Individuals taking medications like azathioprine, tacrolimus, or corticosteroids should consult their healthcare provider before adding Xylaria nigripes to their regimen. This interaction concern is particularly important given the ingredient's documented immune-enhancing properties.
Who benefits most from Xylaria nigripes supplementation?
Xylaria nigripes is most beneficial for individuals dealing with chronic inflammation, weakened immune function, or oxidative stress-related conditions. People recovering from illness, those exposed to frequent infections, or individuals with inflammatory disorders may experience the greatest benefits from its combined antimicrobial, immunomodulating, and antioxidant properties. It may also support healthy individuals seeking preventative immune and antioxidant support.
What is the difference between Xylaria nigripes extract and whole mushroom powder in terms of antimicrobial potency?
Extracts of Xylaria nigripes typically concentrate the bioactive compounds responsible for antimicrobial activity, potentially delivering higher potency per serving compared to whole mushroom powder. Whole mushroom powder retains fiber and additional nutrients but requires larger doses to achieve equivalent antimicrobial effects. The choice depends on individual needs: extracts suit those seeking concentrated antimicrobial support, while whole powder offers a more complete nutritional profile.
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