ISSN 0439-755X
CN 11-1911/B
主办:中国心理学会
   中国科学院心理研究所
出版:科学出版社

心理学报 ›› 1995, Vol. 27 ›› Issue (4): 422-427.

• • 上一篇    下一篇

应激对大鼠行为和部分脑区谷氨酸含量的影响

严进;王春安;叶阿莉;陈宜张   

  1. 第二军医大学生理学教研室神经科学实验室
  • 发布日期:1995-12-25 出版日期:1995-12-25
  • 通讯作者: 严进

THE EFFECT OF STRESS ON BEHAVIORS AND GLUTAMATE LEVELS OF FOUR BRAIN REGIONS

Yan Jin;Wang Chunan;Ye Ali;Chen Yizhang(Lab.of Neuroscience, Dept.of Physiology,2nd Military Medical University,Shanghai)   

  • Online:1995-12-25 Published:1995-12-25

摘要: 以旷场试验法测定动物在急、慢性躯体性和心理性应激时的行为变化,以快速断头冷冻匀浆法,用HITACHI-835氨基酸分析仪测定应激各期视皮层、海马、下丘脑、小脑谷氨酸含量。并对正常动物经侧脑室微量注射L-AP4后观察行为变化。结果显示,急性应激期动物行为活动增加,慢性应激期减少:应激时,大鼠部分脑区的谷氨酸含量与对照组相比在不同时期呈显著性差异;侧脑室微量注射L-AP4提示行为活动减弱可能与脑内Glu系统的活动有关。

关键词: 应激, 旷场试验, 谷氨酸, L-AP4

Abstract: Glutamate(Glu)levels of the visual cortex(VC) ,hippocampus (Hi),hypothalamus(Hy)and cerebellum(Ce)during acute and chronic,and physical and psychological stress in rats were measured.Open-field behaviors (OFBs)during stress and after intracerebroventricularly(icv,lateral ventricle) administered L-AP4(10-3M/L,5ul)or saline(5ul)were recorded with TV camera The results showed that Glu levels of Hi and Hy in acute stress group and that of VC in chronic stress groups were higher and that of Ce was lower than that of the control (P<0.05),and there was a significant difference in Glu level of Hi between physical and psychological stress.OFBs were markedly reduced during chronic stress.It was similar to chronic stressed animals that OFBs in non-stress rats were reduced significantly in the 5min following icv administration of L-AP4.These suggested that stressinduced OFBs change was connected with Glu system in CNS.

Key words: stress, open-field test, Glu, L-AP4