期刊
JOURNAL OF NEUROSCIENCE
卷 27, 期 42, 页码 11424-11430出版社
SOC NEUROSCIENCE
DOI: 10.1523/JNEUROSCI.2847-07.2007
关键词
hippocampus; schizophrenia; MAM; dopamine; psychosis; animal model
资金
- NIDA NIH HHS [DA15408, R01 DA015408, R56 DA015408] Funding Source: Medline
- NIMH NIH HHS [R01 MH057440, MH57440, R37 MH057440] Funding Source: Medline
Evidence supports a dysregulation of subcortical dopamine (DA) system function as a common etiology of psychosis; however, the factors responsible for this aberrant DA system responsivity have not been delineated. Here, we demonstrate in an animal model of schizophrenia that a pathologically enhanced drive from the ventral hippocampus (vHipp) can result in aberrant dopamine neuron signaling. Adult rats in which development was disrupted by prenatal methylazoxymethanol acetate(MAM) administration display a significantly greater number of spontaneously firing ventral tegmental DA neurons. This appears to be a consequence of excessive hippocampal activity because, in MAM-treated rats, vHipp inactivation completely reversed the elevated DA neuron population activity and also normalized the augmented amphetamine-induced locomotor behavior. These data provide a direct link between hippocampal dysfunction and the hyper-responsivity of the DA system that is believed to underlie the augmented response to amphetamine in animal models and psychosis in schizophrenia patients.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据