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  • Title: Benzyl-isoquinoline alkaloids rich extract of Coptis teeta Wall., exhibit potential efficacy in calcium-oxalate and uric-acid linked metabolic disorders.
    Author: Misra A, Chaudhary MK, Rawat P, Tripathi D, Barik SK, Srivastava S.
    Journal: Fitoterapia; 2024 Sep; 177():106050. PubMed ID: 38838823.
    Abstract:
    Coptis teeta Wall., an endangered but valuable medicinal species having various folklore uses in Indian and Chinese Traditional system of medicine. Its distribution is restricted to India, China and Tibet. In India, C. teeta is traditionally used in joint disorders, urinary infections and inflammatory diseases, however the scientific validation is missing. Thus, the present study aims to validate the anti-lithiatic and anti-gout activity of C. teeta rhizome extract (CTME) through in-vitro biological assays. The metabolic fingerprinting of CTME through reverse phase-high performance liquid chromatography-photodiode array (RP-HPLC-PDA) showed the presence of five benzyl-isoquinoline alkaloids, namely berberine (2.59%), coptisine (0.746%) jatrorrhizine (0.133%), palmatine (0.03%) and tetrahydropalmatine (0.003%). The anti-gout potency analysed via in-vitro xanthine oxidase (XOD) inhibition assay, followed by HPTLC (High performance thin layer chromatography) mediated bio-autographic inhibition of XOD signifies that CTME exhibit strong inhibition of XOD (IC50: 3.014 μg/ml), insignificantly different (p > 0.05) from allopurinol (IC50: 2.47 μg/ml). The XOD bioautographic assay advocates that the efficacy is primarily due to berberine and coptisine alkaloids. The CTME has significant anti-lithiatic activity, and thereby limiting the progression of crystal nidus formation, mediated via inhibition of calcium oxalate crystals nucleation and aggregation. Additionally, the extract also exhibits potential effect on inhibition of oxidative stress associated inflammation, which plays crucial role in alleviating urolithiasis and gouty conditions. Validating the traditional claims of C. teeta will not only confirm its medicinal benefits for targeted pathological conditions but also enhance its industrial demand.
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