Rutin protects against trimethyltin-induced learning and memory impairment in BALB/c mice by antagonizing down-regulated synaptophysin expression
10.3969/j.issn.1673-4254.2015.01.22
- VernacularTitle:芦丁对三甲基锡损害学习记忆功能的保护作用与拮抗突触囊泡蛋白表达下调有关
- Author:
Qizhong QIN
1
;
Qi ZHAO
;
Chunhai CHEN
;
Zhou ZHOU
;
Zhengping YU
Author Information
1. 重庆医科大学实验教学管理中心
- Keywords:
learning and memory;
morris water maze;
trimethyltin;
synaptophysin;
rutin
- From:
Journal of Southern Medical University
2015;(1):113-116
- CountryChina
- Language:Chinese
-
Abstract:
Objective To explore the protective effects of rutin against learning and memory impairment induced by trimethyltin (TMT) and investigate the possible mechanism. Methods Forty 6- to 9-week-old male BALB/c mice were randomized equally into saline group (control), TMT group, TMT+rutin group, and rutin group. Mouse models of learning and memory impairment were establish by acute TMT (2.25 mg/kg) exposure. In TMT+rutin and rutin treatment groups, the mice received intraperitioneal injection of rutin (10 mg/kg) for 1 week before TMT exposure. Twenty-four hours after TMT exposure, Morris water maze test was employed to test the escape latency of the mice, and the synaptophysin expression in the hippocampus and cortex were analyzed by Western blotting. Results Compared that in TMT group, the escape latency of the mice in water maze test was significantly shorter in the other 3 groups (P<0.05);the escape latency in TMT+rutin group was similar with that in the control and rutin groups (P>0.05). Western blotting showed significantly decreased synaptophysin expression in the hippocampus and cortex in TMT group (P<0.05); synaptophysin expression in TMT+rutin group increased significantly compared with that in TMT group (P<0.05) but showed no statistical significance from that in rutin and control groups (P>0.05). Conclusion Rutin pretreatment offers protective effect against TMT- induced learning and memory impairment in mice possibly by antagonizing decreased synaptophysin in the hippocampus and cortex.
