The involvement of Type II Neuregulin-1 in rat visuospatial learning and memory.

The involvement of Type II Neuregulin-1 in rat visuospatial learning and memory.
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DOI:
10.1016/j.neulet.2012.10.018
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发表时间:
2012-12-07
影响因子:
2.5
通讯作者:
Koenig JI
Koenig JI
中科院分区:
医学4区
文献类型:
--
作者:
Taylor AR;Taylor SB;Koenig JI

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在精神分裂症中观察到的认知缺陷被认为是该疾病的核心特征。神经调节蛋白-1是精神分裂症的危险基因,参与许多与精神分裂症相关的神经发育和突触可塑性相关的过程。在这里,我们使用了一个大鼠模型(Nrg1Tn),它是神经调节蛋白-1 (Nrg1)基因的半形,来测试大鼠大脑中II型Nrg1的减少是否会导致与精神分裂症相关的认知缺陷。对野生型和纯合子Nrg1Tn雄性大鼠进行空间记忆(Morris水迷宫)和视觉空间工作和参考记忆(Can测试)的记忆测试。Nrg1Tn大鼠在Morris水迷宫中没有受损,但在食欲视觉空间辨别测试中确实表现出缺陷。Nrg1Tn大鼠在本实验中出现了更多的参考和工作记忆错误。这些结果表明,大脑中II型NRG1的减少可能导致视觉空间学习和记忆的缺陷。
The cognitive deficits observed in schizophrenia are considered a core feature of the disease. Neuregulin-1 is a risk gene for schizophrenia that is involved in many neurodevelopmental and synaptic plasticity-related processes relevant to schizophrenia. Here, we have utilized a rat model (Nrg1Tn), which is hypomorphic for the neuregulin-1 (Nrg1) gene, to test whether reduced Type II NRG1 in the rat brain leads to cognitive deficits relevant to schizophrenia. Wild-type and homozygous Nrg1Tn male rats were tested in memory tasks that evaluated spatial memory (Morris water maze) and visuospatial working and reference memory (Can test). Nrg1Tn rats were not impaired on the Morris water maze, but did show a deficit in the appetitive visuospatial discrimination test. Nrg1Tn rats committed more reference and working memory errors in this test. These results indicate that decreased Type II NRG1 in the brain may lead to deficits in visuospatial learning and memory.
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