Publicado 12 números por año
ISSN Imprimir: 1521-9437
ISSN En Línea: 1940-4344
Indexed in
Anti-Inflammatory Activity and Bioactive Constituents of Cultivated Fruiting Bodies of Xylaria nigripes (Ascomycetes), a Chinese Medicinal Fungus
SINOPSIS
Xylaria nigripes, also known as Wu Ling Shen, is popular for treating insomnia and trauma in traditional Chinese medicine. This study aimed to examine the anti-inflammatory activity and bioactive constituents of cultivated X. nigripes fruiting bodies in lipopolysaccharide (LPS)-treated RAW 264.7 macrophages. Results showed that among the different extracts, the hexane fraction exhibited the best protection against cell toxicity induced by 1 μg/mL LPS and the strongest inhibitory effect on nitric oxide (NO) production. This fraction led to the isolation of 2 bioactive compounds (namely, XN-CP1 and XN-CP2), which were confirmed to be ergostarien-3β-ol and ergosterol peroxide, respectively. Although both XN-CP1 and XN-CP2 showed good inhibitory effects on NO, tumor necrosis factor-α, interleukin (IL)-1β, IL-6, and prostaglandin E2 production in LPS-stimulated macrophages, XN-CP2 was shown to have a stronger anti-inflammatory activity; this was further supported by its strong suppressive effects on inducible nitric oxide synthase (iNOS) and cyclooxygenase-2 (COX-2) expression and nuclear factor (NF)-κB activation. These results conclude that ergosterol peroxide (XN-CP2) could be the main bioactive compound contributing to the potent anti-inflammatory activity of X. nigripes, and its mechanism of action is mediated through inhibition of iNOS and COX-2 expression via the NF-κB signaling pathway.
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Wu Shu-Jing, Tung Yi-Jou, Ng Lean-Teik, Anti-diabetic effects of Grifola frondosa bioactive compound and its related molecular signaling pathways in palmitate-induced C2C12 cells, Journal of Ethnopharmacology, 260, 2020. Crossref
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Lai Ming-Nan, Hsu Hui-Chen, Ng Lean-Teik, Safety assessment of the standardized aqueous extract from solid-state cultured Xylaria nigripes (Wuling Shen) in rats, Clinical Phytoscience, 7, 1, 2021. Crossref
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Keekan K. K., Ranadive K. R., Naik P., Sendker J., Padmaraj S. R., Anti-Methicillin-Resistant S. aureus Activity of Fruiting Body and Mycelial Culture Extracts of Xylaria longipes Nitschke (Ascomycota), Pharmaceutical Chemistry Journal, 56, 7, 2022. Crossref