Background: Chronic unpredictable stress triggers various pathological and metabolic alterations by modulating psychophysiological balance. Valeric acid (VA), a postbiotic material, has been reported to mitigate stress-induced behavioral changes in rodents. Objectives: To investigate the protective effect of valeric acid against chronic unpredictable stress in a rodent model by assessing neuro-physiological alterations along with changes in biochemical parameters to confirm the possible mechanism. Methods: A 14-day chronic unpredictable stress (CUS) model in albino Wistar rats was developed to check the stress-induced changes using forced swim test, tail suspension test and sexual behavior observation. Quantification of IL-6, TNF-α, IL-1β, plasma corticosterone level and oxidative stress parameters were also done. Results: Findings revealed the protective effects of valeric acid against CUS, which reversed the depression caused by a forced swim and tail suspension test in rats. Proinflammatory and oxidative stress markers were significantly (p < 0.05) restored in CUS rats treated with valeric acid as compared with the vehicle control, which was comparable to the standard drug, Panax ginseng. Conclusions: The present study concludes that valeric acid demonstrated significant (p < 0.05) anti-stress effect by modulating both behavioral responses and stress-related biochemical modifications.
Kumari et al. (Tue,) studied this question.