Cortical parvalbumin interneurons and cognitive dysfunction in schizophrenia.

Cortical parvalbumin interneurons and cognitive dysfunction in schizophrenia.
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精神分裂症的皮质性白蛋白中间神经元和认知功能障碍。

DOI:
10.1016/j.tins.2011.10.004
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发表时间:
2012-01
影响因子:
15.9
通讯作者:
Volk DW
Volk DW
中科院分区:
医学1区
文献类型:
--
作者:
Lewis DA;Curley AA;Glausier JR;Volk DW

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认知控制的缺陷,精神分裂症的核心障碍,似乎出现从受损的前额叶伽马振荡。皮质γ振荡需要对来自GABA能神经元的小白蛋白篮细胞(PVBC)类的锥体神经元的强抑制性输入。最近的研究结果表明,精神分裂症与PVBC中的多个突触前和突触后异常有关,每个异常都削弱了它们对锥体细胞的抑制控制。这些研究结果表明,在精神分裂症中,PVBC抑制减少,以弥补锥体细胞兴奋的上游赤字皮质功能障碍的新模型。这种补偿被认为是重新平衡皮层的兴奋和抑制,但其水平不足以产生高水平认知控制所需的伽马振荡功率。
Deficits in cognitive control, a core disturbance of schizophrenia, appear to emerge from impaired prefrontal gamma oscillations. Cortical gamma oscillations require strong inhibitory inputs to pyramidal neurons from the parvalbumin basket cell (PVBC) class of GABAergic neurons. Recent findings indicate that schizophrenia is associated with multiple pre- and post-synaptic abnormalities in PVBCs, each of which weakens their inhibitory control of pyramidal cells. These findings suggest a new model of cortical dysfunction in schizophrenia in which PVBC inhibition is decreased to compensate for an upstream deficit in pyramidal cell excitation. This compensation is thought to re-balance cortical excitation and inhibition, but at a level insufficient to generate the gamma oscillation power required for high levels of cognitive control.
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发表时间: 2002-01-01
期刊: HIPPOCAMPUS
影响因子: 3.5
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