Send to

Choose Destination
Pharmacogn Mag. 2012 Oct;8(32):325-8. doi: 10.4103/0973-1296.103666.

Life span effects of Hypericum perforatum extracts on Caenorhabditis elegans under heat stress.

Author information

Department of Nutrition and Dietetic, Erzincan University, School of Health, 24100, Erzincan, Turkey.



The beneficial effects of antioxidants in plants are mainly extrapolated from in vitro studies or short-term dietary supplementation studies. Due to cost and duration, relatively little is known about whether dietary antioxidants are beneficial in whole animals' life span or not.


To address this question, under heat stress (35°C), Hypericum perforatum was extracted with petroleum ether and the nematodes Caenorhabditis elegans exposed to three different extract concentrations (1mg/mL, 0.1mg/mL, 0.01mg/mL) of H. perforatum.


We report that Hypericum perforatum extracts did not increase life span and slow aging related increase in C. elegans. Moreover, one fraction (1mg/mL) increased declines of C. elegans life span and thermotolerance.


Given this mounting evidence for life span role of H. perforatum in the presence of heat stress in vivo, the question whether H. perforatum acts as a prooxidant or an antioxidant in vivo under heat stress arises.


Aging; Caenorhabditis elegans; Hypericum perforatum; life span; thermal stres

Supplemental Content

Full text links

Icon for Medknow Publications and Media Pvt Ltd Icon for PubMed Central
Loading ...
Support Center