Kaur P, Sharma M, Mathur S, Tiwari M, Divekar HM, Kumar R, Srivastava KK, Chandra R. Effect of 1-oxo-5beta, 6beta-epoxy-witha-2-ene-27-ethoxy-olide isolated from the roots of Withania somnifera on stress indices in Wistar rats.
J Altern Complement Med 2004;
9:897-907. [PMID:
14736361 DOI:
10.1089/107555303771952244]
[Citation(s) in RCA: 16] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
OBJECTIVE
Isolation of biologically active fractions and compounds from the roots of Withania somnifera, a plant used extensively as a constituent of rasayana, in Ayurveda and to test their adaptogenic activity on stress indices using the cold-hypoxia-restraint (C-H-R) model.
DESIGN
Bioactivity-guided fractionation of an aqueous extract of the roots of Withania somnifera led to the isolation of a new species of withanolide 1-oxo-5beta, 6beta-epoxy-witha-2-ene-27-ethoxy-olide. Structure elucidation, was carried out using proton nuclear magnetic resonance, infrared (IR), ultraviolet (UV), and mass spectroscopic analysis. Stress-related indices were evaluated, namely serum creatine phosphokinase (CPK) activity, serum lactate dehydrogenase (LDH) activity, serum corticosterone levels, and serum lipid peroxidation (LPO) levels.
RESULTS
There was a significant decrease in a serum CPK, LDH, and LPO levels in animals pretreated with (1) fraction-I (20 mg/kg body weight), (2) 1-oxo-5beta, 6beta-epoxy-witha-2-ene-27-ethoxy-olide (2.5 mg/kg body weight) in comparison to control when subjected to C-H-R stress.
CONCLUSIONS
The results show that the a new species of withanolide, 1-oxo-5beta, 6beta-epoxy-witha-2-ene-27-ethoxy-olide (compound-1) could prove to be an effective agent to counteract C-H-R stress.
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