Deficits in adult prefrontal cortex neurons and behavior following early post-natal NMDA antagonist treatment.

Deficits in adult prefrontal cortex neurons and behavior following early post-natal NMDA antagonist treatment.
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产后NMDA拮抗剂治疗后,成人前额叶皮层神经元的缺陷和行为。

DOI:
10.1016/j.pbb.2009.04.017
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发表时间:
2009-09
影响因子:
3.6
通讯作者:
Crews, Fulton T.
Crews, Fulton T.
中科院分区:
心理学4区
文献类型:
--
作者:
Coleman, Leon G., Jr.;Jarskog, L. Fredrik;Moy, Sheryl S.;Crews, Fulton T.

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前额叶皮层(PFC)与包括注意力和工作记忆在内的高级认知功能有关,并与冲动的调节以及复杂精神疾病的病理学有关。N-甲基-D-天冬氨酸(NMDA)拮抗剂治疗与地佐环平诱导细胞死亡,这是最大的在出生后第七天(P7)的额叶皮层,但这种治疗的长期结构和行为的影响是未知的。本研究调查了P7地佐环平的急性神经毒性和这种治疗对成年PFC中锥体细胞和小白蛋白中间神经元的持续影响,PFC是参与冲动调节的脑区。地佐环平治疗P7增加裂解半胱天冬酶-3免疫反应性(IR)在PFC的P8。在成年小鼠(P82)中,P7地佐环平处理导致PFC中小清蛋白阳性中间神经元减少50%(p<0.01),V层锥体神经元减少42%(p<0.01)。双重免疫组织化学显示在GAD 67 IR中间神经元和GAD 67(-)神经元中切割的caspase-3 IR。地佐环平治疗后,在P7,成年人表现出减少的时间在中心的开放领域,这表明增加焦虑样行为。这些研究结果表明,早期脑损伤影响海马能神经传递导致持续的脑病理,可能有助于冲动和认知功能障碍。
The prefrontal cortex (PFC) is associated with higher cognitive functions including attention and working memory and has been implicated in the regulation of impulsivity as well as the pathology of complex mental illnesses. N-methyl D-aspartate (NMDA) antagonist treatment with dizocilpine induces cell death which is greatest in the frontal cortex on postnatal day seven (P7), however the long-term structural and behavioral effects of this treatment are unknown. This study investigates both the acute neurotoxicity of P7 dizocilpine and the persistent effects of this treatment on pyramidal cells and parvalbumin interneurons in the adult PFC, a brain region involved in the regulation of impulsivity. Dizocilpine treatment on P7 increased cleaved caspase-3 immunoreactivity (IR) in the PFC on P8. In adult mice (P82), P7 dizocilpine treatment resulted in 50% fewer parvalbumin-positive interneurons (p<0.01) and 42% fewer layer V pyramidal neurons (p<0.01) in the PFC. Double immunohistochemistry revealed cleaved caspase-3 IR in both GAD67 IR interneurons and GAD67 (-) neurons. Following dizocilpine treatment at P7, adults showed reduced time in the center of the open field suggesting increased anxiety-like behavior. These findings indicate that early brain insults affecting glutamatergic neurotransmission lead to persistent brain pathology that could contribute to impulsivity and cognitive dysfunction.
DOI: 10.1152/jn.00397.2007
发表时间: 2007-12-01
影响因子: 2.5
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期刊: Psychiatric Quarterly (New York)
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发表时间: 2003-09-01
影响因子: 3.4
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发表时间: 1998-12-08
影响因子: 11.1
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