噻萘普汀对慢性应激大鼠海马体积影响的在体研究  

In vivo study of effect of tianeptine on hippocampal volume of chronic stressed rats

作　　者：朱丞[1] 孙晓海[1] 柳威[1] 陈夫银[2] 李春霞[3] 舒细记[4] 刘丽江[4] 赵虎[1] 

机构地区：[1]汕头大学医学院法医学教研室,汕头515041 [2]杭州市公安局安康医院 [3]中国科学院武汉物理与数学研究所 [4]江汉大学医学与生命科学学院病理与病理生理教研室

出　　处：《中国行为医学科学》2008年第5期385-387,共3页Chinese Journal of Behavioral Medical Science

基　　金：国家自然科学基金资助项目（30371578）;广东省自然科学基金资助项目（021219）

摘　　要：目的在体观察噻萘普汀对强迫游泳大鼠海马体积的影响。方法将24只大鼠随机分成4组：对照组（n=6）、4周应激组（n=6）、4周应激生理盐水组（n=6）和4周应激噻萘普汀组（n=6），各应激组大鼠接受连续4周的强迫游泳应激。根据行为学和血清皮质酮水平评定应激效果，4周后行MRI扫描在体检测左右海马的体积。结果4周应激组、4周应激加水组及4周应激给药组的血清皮质酮水平[（728．67±77．67）ng／ml，（765．37±250．87）ng／ml，（863．49±282．31）ng／m1]，均比对照组[（191．60±116．41）ng／ml]明显升高（P〈0．01）。左、右侧绝对海马体积比较，4周应激组[（59．45±5．05）mm^3，（61．66±5．32）mm^3]和4周应激加水组[（61．01±6．06）ng／ml，（61．43±3．12）ng／ml]均比对照组明显减小（P〈0．01）；4周应激给药组大鼠均较4周应激组和4周应激加水组明显增加（P〈0．01），而与对照组之间差异无显著性（P〉0．05）。大鼠双侧海马相对体积组间比较结果与绝对体积一致。应激后大鼠爬格数与海马体积呈正相关（r=0．557—0．598，P〈0．05）。结论噻萘普汀可逆转强迫游泳慢性应激导致的大鼠双侧海马体积减少。Objective To observe the change of the hippocampal volume of rats induced by chronic stress and effects of tianeptine on it. Methods 24 rats were randomly allocated into control （ n = 6） ,4 week-stress （ n = 6 ） ,4 week-stress with saline （ n = 6 ） and 4 week-stress with tianeptine （ n = 6） groups. Forced Swimming Test was used to set up stress animal model,the stressful responses were assessed by behaviour and serum corticosterone level, and hippocampal volume was measured in vivo by MRI. Results The serum corticosterone level of all the stressed groups（728.67 ±77.67,765.37 ± 250.87,863.49 ± 282.31 ） are significantly higher than that of control group （191.60 ± 116.41 ）, P 〈 0.01. In absolutely left and fight hi ppocampal volume ,4-week stress group （59.45 ± 5.05,61.66 ± 5.32 ） and 4-week stress with saline group （ 61.01 ± 6.06,61.43 ± 3.12 ） have smaller hippocampal volumes compared with control group（ all P〈0.01 ） ;4-week stress group with tianeptine has much bigger bilateral hippocampal volume than the 4-week stress group and 4-week stress with saline group （ all P 〈 0.01 ）, but there is no significant difference between 4-week stress group with tianeptine and control group. The comparison of adjusted bilateral hippocampal volume is consistent with the absolute hippocampal volume. In addition, there is a positive correlation between the amount of acrossing and hippocampal volume, the coefficient correlations range from 0.0557 ～ 0. 0598 （ P 〈0.05 ）. Conclusion It was indicated that tianeptine could reverse the reduction of hippocampal volume caused by chronic stress.

关 键 词：应激 皮质酮 海马体积 噻萘普汀 在体 

分 类 号：R96[医药卫生—药理学]