Specialized metabolites from the Chinese liverwort Heteroscyphus coalitus (Hook.) Schiffn and their anti-inflammatory activity.

Researchers investigating traditional Chinese medicine have discovered new compounds from a Chinese liverwort plant called Heteroscyphus coalitus that show promising anti-inflammatory effects. The study identified 21 different chemical compounds from this plant, including five that had never been described before. Scientists tested these compounds on cells in the laboratory to see if they could reduce inflammation, which is a key factor in many chronic health conditions. Three of the compounds were particularly effective at blocking inflammatory responses. They worked by reducing the production of specific inflammatory molecules called cytokines (TNF-α, IL-6, and IL-1β) and by affecting a cellular pathway called NF-κB that controls inflammation. These compounds achieved their anti-inflammatory effects at concentrations between 14 and 27 micromolar. While this research is still in the early laboratory stages using cell cultures rather than human patients, it helps explain why certain traditional Chinese herbal medicines may be effective for inflammatory conditions. The findings support the scientific basis for some of the plants used in traditional Chinese medicine practices. Many acupuncture and Chinese medicine practitioners incorporate herbal medicine alongside acupuncture treatments to address inflammation-related conditions. However, more research is needed to determine if these specific compounds would be safe and effective in actual patients. If you are considering acupuncture or Chinese herbal medicine for inflammatory conditions, seek treatment from a licensed acupuncturist or qualified practitioner certified in Chinese herbal medicine.

This phytochemical study isolated 21 compounds from Heteroscyphus coalitus, including five novel terpenoids: ent-clerodanoids (coalitins A-C), an ent-abietanoid (coalisin A), and an unprecedented 2-nor-ent-aromadendrane sesquiterpenoid (coalisin B). Structures were elucidated using NMR spectroscopy, HRESI-MS, and experimental ECD measurements. Anti-inflammatory bioactivity was assessed using LPS-stimulated RAW 264.7 macrophages. Three compounds demonstrated significant NO inhibition: compound 12 (IC50 21.35 μM), compound 17 (IC50 27.36 μM), and compound 20 (IC50 13.98 μM). Mechanistic studies revealed these compounds downregulated NF-κB p65 phosphorylation and suppressed pro-inflammatory cytokine production (TNF-α, IL-6, IL-1β). Clinical relevance: These findings provide molecular evidence supporting the traditional use of liverwort species in Chinese medicine for inflammatory conditions, though human clinical trials are needed to validate therapeutic applications and safety profiles.