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Bistort (Bistorta officinalis) and Inflammation (general): evidence and sources
Anti-inflammatory gargle / mouthwash for inflammation of the mouth and throat (sore throat)
For educational purposes only, not medical advice. Always consult a qualified practitioner before using medicinal plants, especially alongside prescribed medication, during pregnancy, or for a serious condition.
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Ethnopharmacological relevance Bistort rhizome (Bistorta officinalis) is a traditionally used plant material popular in Europe and Asia in the treatment of diarrhea and as a topical agent for skin conditions. It contains tannins mostly condensed flavan-3-ol derivatives. However, the in-depth phytochemical investigation of infusions from this plant materials is still lacking. Additionally, the scientific reports supporting the traditional topical application of bistort rhizome are scarce. Aim of the study The major objective of the present study was to comprehensively investigate the chemical composition of infusion from subterranean parts of common bistort both using hyphenated chromatographic technique and isolation approach. Additionally, the influence of water extract on pro-inflammatory functions of human neutrophils was performed. As bacterial infections play a crucial role in the generation of skin inflammations the antimicrobial activity of the infusion and its major components was established. Material and methods The chemical composition of the infusion was established using UHPLC-DAD-MS 3 method. Major compounds which could not be identified using chromatographic analysis were isolated by column chromatography and preparative HPLC. Obtained pure phytochemicals were identified by NMR analysis. The influence of the extract and compounds on the cell viability and apoptosis was evaluated by flow cytometry. The release of pro-inflammatory cytokines after LPS stimulation was established by ELISA. Finally, the antimicrobial assays were performed by establishing MIC and MBC values using several bacterial strains. Results The UHPLC analysis revealed the infusion contained mainly, galloyl glucose derivatives, procyanidins and chlorogenic acid. Several compounds were isolated and identified for the first time from the investigated plant material. It was shown that the infusion and its constituents influenced the release of proinflammatory cytokines such as IL-1β, TNF-α and IL-8 and also affected the viability and apoptosis of healthy cells. Both extract and isolated natural products displayed antimicrobial activity against skin pathogens. Conclusions The results obtained in the present study support that the infusions from common bistort influence key biological processes are crucial for skin conditions with the inflammatory background. The study justifies the traditional topical application of common bistort.
2 sources supporting Bistort for Inflammation (general). Includes scientific publications, books, monographs and traditional-use references.
Mechanistic basis
This use is associated with the plant's anti-inflammatory action. Further evidence for that pharmacology:
Inflammatory bowel disease is a chronic inflammatory disorder accompanied by occasional flare-ups, abdominal pain, and rectal bleeding. Persicaria bistorta Samp. is a medicinal plant repeatedly mentioned in traditional Persian medicine for the treatment of bleeding and tissue damage in different organs, including the intestines. The current study aimed to evaluate the effect of bistort root in an animal model of colitis. Freeze-dried aqueous extract of the plant (PB) was prepared and analyzed using liquid chromatography-mass spectrometry and high-performance liquid chromatography. The anti-inflammatory effect of oral PB (300, 500, and 700 mg/kg) was evaluated in acetic acid-induced colitis in Wistar rats compared with negative control and positive control (dexamethasone). The role of nitric oxide (NO), opioid receptors, Toll-like receptors (TLR-4), interleukin (IL)-1β, IL-6, TNF-α, NF-κB, myeloperoxidase, and intestinal tissue damage using immunohistochemistry staining for cyclooxygenase-2 (COX-2) were also assessed. A total of 29 compounds were identified in the extract. The gallic acid content of the extract was 4.973 ± 1.102 mg/g. PB significantly ameliorated the gross morphological damage from 4.66 ± 0.577 in negative control to 1.33 ± 0.56 in PB 700 (p < 0.001). Also, PB 700 lowered the levels of TNF-α (p < 0.01), TLR-4 (p < 0.001), NF-κB (p < 0.0001), IL-1β (p < 0.0001), and IL-6 (p < 0.0001) compared to the negative control. Additionally, while blocking NO and opioid pathways, the therapeutic effect of the extract was not significant, compared to the negative control, suggesting that PB 700 has exerted its therapeutic effect via these two pathways. However, further mechanistic and clinical studies are recommended to confirm PB as a natural treatment for colitis.