The effect of environmental on spontaneous activities and expression of c-Fos, 5-HT in the hippocampal neurons of rats with posttraumatic stress disorder
10.3760/cma.j.issn.1674-6554.2015.01.003
- VernacularTitle:丰富环境对创伤后应激障碍样大鼠自发活动和海马c-Fos、5-HT表达的影响
- Author:
Yujing ZHANG
;
Yan ZHOU
;
Yan XU
;
Hu WANG
;
Yan HU
;
Yingchun TAN
;
Deqin GENG
- Publication Type:Journal Article
- Keywords:
Posttraumatic stress disorder;
Single prolonged stress;
Enriched environment;
Individual living;
c-Fos;
5-hydroxytryptamine
- From:
Chinese Journal of Behavioral Medicine and Brain Science
2015;24(1):8-11
- CountryChina
- Language:Chinese
-
Abstract:
Objective To investigate the expressions of c-Fos,5-HT and spontaneous activities in single prolonged stress (SPS) stress rats,and to study the possible mechanism of posttraumatic stress disorder(PTSD).Methods forty-eight male SD rats were randomly divided into 6 groups:Individual living + SPS group (IS group),Individual living+control group (IC group),Enriched environment+SPS group (ES group),Enriched environment+control group (EC group),control+SPS group(CS group),control group(C group),8 rats in each group,spontaneous activities were measured before the experiment and post experiment at week 1,2.And the expressions of c-Fos,5-HT in the hippocampus were examined by immunohistochemical staining.Results (1) Spontaneous activity:there were no differences of crossing number and distance among 6 groups before experiment (P＞0.05).On SPS 14 days the crossing number and distance of IS group (12.12±9.64,(2.71 ± 1.99)m) decreased compared with the CS group(45.25±8.37,(6.37± 1.18) m,P＜0.05),and ES group (69.75± 10.05,(10.69± 1.50) m)showed significant increase compared with CS group (P＜0.05).(2)5-HT:the expression of 5-HT in the hippocampus of IS group(0.1125±0.0095) was significantly higher than that in CS group(0.6138±0.0059,P＜0.05),menwhile lower in ES group(0.0495±0.0074,P＜0.05).(3)c-Fos:compared with CS group(0.3108±0.0074),the expression of c-Fos in the hippocampus of IS group(0.3585±0.0150,P＜0.05) significantly increased,but decreased in ES group (0.2613±0.0063,P＜ 0.05).Conclusion Enriched environmental can improve the level of activities in PTSD rats,and to reduce the the expression of c-Fos and 5-HT in the hippocampal neurons.
