Anti-Inflammation and Antimicrobial Constituents from the Roots and Their Production in Callus Cultures of Valeriana jatamansi Jones | Bentham Science

摘要

Background: Valeriana jatamansi Jones (Syn. V. wallichii DC.; Fam. – Valerianaceae) is amedicinal plant species, endemic to the Himalayan regions of India and rich in presence of iridoids. Thisplant species possessed antimicrobial, antioxidant and anti-inflammatory properties.Methods: The shade-dried roots were powdered, percolated with 95% ethanol for 36 h at room temperature(3-times) and filtrate used for isolation of iridoids. The isolated compounds identified based onphysical and spectral data analysis. For the enhancement of production of iridoids, the callus culturesestablished on Murashige and Skoog (MS) culture medium with variable concentrations of growth hormones.The isolated iridoids estimated by using High Performance Liquid Chromatography (HPLCSPD-M10A photodiode array detector) and Gas Chromatography–Mass Spectrometry (GC-MS) analysis.The anti-inflammatory activity of iridoids assessed by using carrageenan and Complete Freund'sAdjuvant (CFA-induced adjuvant) models in experimental rats. The total eight bacterial and five fungalstrains used for determination of antimicrobial activity. The activity assessed by using microdilutionmethod.Results: Total seven iridoids were isolated from ethyl acetate fraction and their production estimated incell cultures. The maximum accumulation (69.39±0.45 mg/g) of jatamanvaltrate S was observed in 2, 4-D (4.0 mg/l) and kinetin (1.0 mg/l) supplemented MS culture medium. Maximum anti-inflammatoryactivity demonstrated by jatamanvaltrate R (46.8%) at the dose of 20 mg/kg body weight (bw) at 8 hafter carrageenan injection. Similarly, the jatamanvaltrate R also displayed maximum inhibitory activity(49.9%) to CFA-induced adjuvant arthritis in rats on day 8. The strongest antibacterial activity was exhibitedby jatamanvaltrate S (21 μg/ml) against Staphylococcus aureus while maximum antifungal efficacydisplayed by jatamanin B (30 μg/ml) against Penicillium chrysogenum.Conclusion: In this study, all the isolated iridoids found as bioactive molecules and exhibited promisinganti-inflammatory and antimicrobial activities.