gamma-sitosterol and isolariciresinol

BACKGROUND Heat-clearing and detoxifying herbs (HDHs) play an important role in the prevention and treatment of coronavirus infection. However, their mechanism of action needs further study. This study aimed to explore the anti-coronavirus basis and mechanism of HDHs. MATERIAL AND METHODS Database mining was performed on 7 HDHs. Core ingredients and targets were screened according to ADME rules combined with Neighborhood, Co-occurrence, Co-expression, and other algorithms. GO enrichment and KEGG pathway analyses were performed using the R language. Finally, high-throughput molecular docking was used for verification. RESULTS HDHs mainly acts on NOS3, EGFR, IL-6, MAPK8, PTGS2, MAPK14, NFKB1, and CASP3 through quercetin, luteolin, wogonin, indirubin alkaloids, ß-sitosterol, and isolariciresinol. These targets are mainly involved in the regulation of biological processes such as inflammation, activation of MAPK activity, and positive regulation of NF-kappaB transcription factor activity. Pathway analysis further revealed that the pathways regulated by these targets mainly include: signaling pathways related to viral and bacterial infections such as tuberculosis, influenza A, Ras signaling pathways; inflammation-related pathways such as the TLR, TNF, MAPK, and HIF-1 signaling pathways; and immune-related pathways such as NOD receptor signaling pathways. These pathways play a synergistic role in inhibiting lung inflammation and regulating immunity and antiviral activity. CONCLUSIONS HDHs play a role in the treatment of coronavirus infection by regulating the body's immunity, fighting inflammation, and antiviral activities, suggesting a molecular basis and new strategies for the treatment of COVID-19 and a foundation for the screening of new antiviral drugs.

Topics: Alkaloids; Caspase 3; Coronavirus; Coronavirus Infections; COVID-19 Drug Treatment; Cyclooxygenase 2; Databases, Pharmaceutical; Drugs, Chinese Herbal; Flavanones; Humans; Indoles; Interleukin-6; Lignin; Luteolin; Mitogen-Activated Protein Kinase 14; Mitogen-Activated Protein Kinase 8; Molecular Docking Simulation; Naphthols; NF-kappa B p50 Subunit; Nitric Oxide Synthase Type III; Protein Interaction Maps; Quercetin; SARS-CoV-2; Signal Transduction; Sitosterols; Transcriptome

To study the chemical constituents from the fleshy stems of Cynomorium songaricum.. The chemical constituents were isolated and purified by chromatography on MCI, silica gel, Sephadex LH-20 columns, etc. The structures of compounds were elucidated by physicochemical property and spectral analyses.. 15 compounds were isolated and identified as choerospondin( 1), isolariciresinol-4-O-β-D-glucopyranoside( 2), lutelin-7-O-β-D-glucopyranoside( 3), 3, 4-dihydroxyphenethylacetate( 4),maslinic acid( 5),catechin ( 6),ursolic acid( 7),gentisic acid( 8),mannitol( 9), phloroglucinol( 10), β-sitosterol( 11), daucosterol( 12), rutin( 13), cetylic acid( 14) and epicatechin( 15).. Compounds 4,5,8,9 and 10 are obtained from this plant for the first time.

Topics: Catechin; Cynomorium; Lignin; Naphthols; Phloroglucinol; Sitosterols; Triterpenes; Ursolic Acid

To study the chemical constituents from the roots and rhizomes of Clematis hexapetala.. The compounds were separated by means of solvent extraction, repeated chromatography with silica gel and HPLC. The structures were determined by spectral analysis.. Nine compounds were isolated as friedelin (1) , anemonin (2) , beta-sitosterol (3) , palmitic acid (4) , vanillic acid (5) , isolariciresinol (6) , 5-hydroxumethyl-5H-furan-2-one (7) , n-nonane (8) , daucosterol (9).. All the compounds were isolated from the plant for the first time.

Topics: Clematis; Furans; Lignin; Naphthols; Palmitic Acid; Plant Roots; Plants, Medicinal; Rhizome; Sitosterols; Triterpenes