Estrogen reduces apoptosis induced by H_2O_2 in PC 12 cells
- VernacularTitle:雌激素减轻H_2O_2诱导PC12细胞凋亡
- Author:
Mei ZHANG
;
Wei LI
;
Jianqiang FENG
- Publication Type:Journal Article
- Keywords:
estrogen;
hydrogen peroxide;
apoptosis;
caspase-3
- From:
Basic & Clinical Medicine
2006;0(08):-
- CountryChina
- Language:Chinese
-
Abstract:
Objective To observe the effect of estrogen on H2O2-induced apoptosis and to explore the mechanism of protection by estrogen.Methods Setting up the experimental model of apoptosis induced by H2O2 in PC12 cells. The viability of cells was assessed by MTT assay. The activity of lactate dehydrogenase was detected by colorimetry. Hoechst 33258 was used as indicator of apoptosis. Apoptotic cells were measured by flow cytometry (FCM) with propidium iodide stain. The activity of caspase-3 was detected by colorimetry. Results H2O2 significantly decreased the viability of cell, increased LDH release and promoted apoptosis as well as caspase-3 activity in PC12. Estrogen markedly reduced these changes. Conclusion Estrogen reduces apoptosis induced by H2O2, and its mechanisms may be explained by inhibition of activation of caspase-3.
