Sub-circuit alterations in dorsal hippocampus structure and function after global neurodevelopmental insult.

Sub-circuit alterations in dorsal hippocampus structure and function after global neurodevelopmental insult.
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DOI:
10.1007/s00429-018-1704-3
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发表时间:
2018-11
影响因子:
3.1
通讯作者:
Fenton AA
Fenton AA
中科院分区:
医学3区
文献类型:
--
作者:
O'Reilly KC;Levy ERJ;Patino AV;Perica MI;Fenton AA

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神经精神和神经系统疾病患者常表现为边缘回路异常和信息处理缺陷。虽然这些疾病似乎有不同的病因,他们的共同特点表明神经发育的起源。神经发育是一个包含多种事件的长期过程,包括神经发生/细胞凋亡、轴突寻路、突触发生和修剪等。神经发育对这些过程的损伤的精确时间可能决定了所产生的功能结果。我们使用癫痫和精神分裂症相关的妊娠第17天甲基偶氮甲醇乙酸酯(GD 17-MAM)模型来研究这种定时神经发育损伤对背侧海马(dHPC)回路的主细胞形态和突触网络功能的影响。我们观察到的dHPC的结构和功能改变是特定的,表明在妊娠期间不利的全球暴露可以产生特定的改变和扭曲的信息处理神经回路的认知能力。
Patients with neuropsychiatric and neurological disorders often express limbic circuit abnormalities and deficits in information processing. While these disorders appear to have diverse etiology, their common features suggest neurodevelopmental origins. Neurodevelopment is a prolonged process of diverse events including neurogenesis/apoptosis, axon pathfinding, synaptogenesis, and pruning, to name a few. The precise timing of the neurodevelopmental insult to these processes likely determines the resulting functional outcome. We used the epilepsy and schizophrenia-related gestational day 17 methylazoxymethanol acetate (GD17-MAM) model to examine the impact of this timed neurodevelopmental insult on principal cell morphology and synaptic network function of the dorsal hippocampus (dHPC) circuit. Our observed structural and functional alterations in dHPC are compartment-specific, indicating that adverse global exposure during gestation can produce specific alterations and distort information processing in neural circuits that underlie cognitive abilities.
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