The effects of prenatal stress on the cell apoptosis after MCAO in adult offspring rats.
- Author:
Ling-xing WANG
;
Hong-hong HUANG
;
Ya-fang CHEN
;
Hong-chao CAI
;
Jia-qiang QIAN
- Publication Type:Journal Article
- MeSH: Animals; Apoptosis; Caspase 3; metabolism; Female; Infarction, Middle Cerebral Artery; physiopathology; Ischemic Attack, Transient; physiopathology; Male; Pregnancy; Prenatal Exposure Delayed Effects; physiopathology; Proto-Oncogene Proteins c-bcl-2; metabolism; Rats; Rats, Sprague-Dawley; Stress, Physiological
- From: Chinese Journal of Applied Physiology 2015;31(5):427-436
- CountryChina
- Language:Chinese
-
Abstract:
OBJECTIVETo evaluate the effects of prenatal stress on neurological functions after middle cerebral artery occlusion (MCAO) in adult offspring rats.
METHODSPregnant rats were randomly assigned to prenatal stress treatment, which was exposed to restraint three times daily in the last week of pregnancy, and no prenatal stress treatment. Adult male offspring rats were subjected to transient focal cerebral ischemia by MCAO. They were randomly divided into four groups: sham group, prenatal stress + sham group, MCAO group and prenatal stress + MCAO group (n = 10). After 24 hours of reperfusion, the neurological deficits were evaluated. The infarct size, cell apoptosis and expression of Caspase 3, cleaved Caspase 3 and Bcl-2 were detected.
RESULTSCompared with MCAO group, the neurological deficits, infarct size and apoptotic cells in prenatal stress + MCAO group were increased significantly (all P < 0.05). The expressions of Caspase 3 and cleaved Caspase 3 were much greater in prenatal stress + MCAO group than those of MCAO group, while the expression of Bcl-2 was significantly decreased in prenatal stress + MCAO group compared with MCAO group (all P < 0.05).
CONCLUSIONPrenatal stress might exacerbate neuroloeical deficits in the offspring rats after MCAO by increasing cell apoptosis.