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中枢N-甲基-D-天冬氨酸受体在应激所致行为改变中的作用
Alternative TitleInvolvement of N-methyl-D-aspartate Receptors in Stress-Induced Behavioral Changes
李欢欢; 林文娟
2005
Source Publication心理科学进展
ISSN1671-3710
Volume13Issue:3Pages:320-326
Abstract应激所致行为效应的脑机制研究是目前生理心理学研究的热点领域。近年来,对于参与应激所致行为效应的神经递质研究从5-HT、多巴胺和去甲肾上腺素的范畴,逐渐发展到关注脑内含量最为丰富的谷氨酸能神经元所产生的兴奋性递质,包括谷氨酸、天冬氨酸及其相应受体NMDAR 可能在应激性行为效应的中枢机制中的作用。近十年来的研究表明,中枢NMDAR 是学习记忆的关键物质,在兴奋性突触传递、突触可塑性和脑发育过程中扮演重要的角色。不同类型的应激能导致动物的与行为密切相关脑区如杏仁核,海马的兴奋性氨基酸及NMDAR 数量增多,活性增高。突触间隙增多的兴奋性氨基酸与NMDAR 结合后,通过激活NMDAR 促进糖皮质激素的相关性释放,共同产生的兴奋毒性作用引起上述脑区的神经元细胞缺失和变性; 或干扰其他中枢神经递质在动物行为的脑内奖赏机制中的正常功能; 或通过持续激活NMDAR,导致细胞内Ca2+超载,损害其信号传导途径下游的蛋白激酶级联反应,使其底物蛋白的磷酸化或去磷酸化作用发生改变,影响突触可塑性和神经细胞间的信号传递,导致动物出现相应的行为障碍。应激前给动物的上述脑区注射NMDAR 阻滞剂,可以减轻动物的应激性焦虑和抑郁行为。而NMDAR 依赖性LTP 下游途径的新信号分子,神经颗粒素,参与了脑内多种蛋白信号
KeywordNmdar 应激 行为 神经颗粒素
Subject Area生理心理学
Language中文
Funding Project国家自然科学基金资助项目 (NSF30370482);中国科学院创新工程项目 (KSCX2-2-03)
NoteStudies in the physiological psychology field have been focused on the brain mechanisms underlying stress-induced behavioral changes. The role of NMDA receptor (NR) in mediating stress-induced behavioral changes has gained more and more attention. NR is important for synaptic plasticity, brain development, and learning and memory. It has been shown that different stressors up-regulate the level or activity of NR in some brain regions, such as hippocampus and amygdale. Injection of the NR antagonist into these regions prior to stress can reduce stress-induced anxiety and depression, suggesting that NR are important mediators of stress-induced behavioral changes. N-methyl-D-aspartate receptors are important substance related closely with stress response and participate the process of brain damage caused by stress. N-methyl-D-aspartate receptor antagonists may be useful for treatment of stress-related mental disorder, such as recurrent depression, posttraumatic stress disorder. Furthermore, studies on neurogranin, a downstream signal molecule in NR-dependant transduction pathway, provided further information about the mechanisms underlying the effects of stress on behavior.
Document Type期刊论文
Identifierhttp://ir.psych.ac.cn/handle/311026/2970
Collection中国科学院心理研究所回溯数据库(1956-2010)
Corresponding Author林文娟
Recommended Citation
GB/T 7714
李欢欢,林文娟. 中枢N-甲基-D-天冬氨酸受体在应激所致行为改变中的作用[J]. 心理科学进展,2005,13(3):320-326.
APA 李欢欢,&林文娟.(2005).中枢N-甲基-D-天冬氨酸受体在应激所致行为改变中的作用.心理科学进展,13(3),320-326.
MLA 李欢欢,et al."中枢N-甲基-D-天冬氨酸受体在应激所致行为改变中的作用".心理科学进展 13.3(2005):320-326.
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