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- W2018966412 abstract "Rats with neonatal ventral hippocampal lesions (NVHL) have been studied as a neurodevelopmental animal model of schizophrenia. NVHL rats exhibit postpubertal emergence of hyperresponsiveness to stress, suggesting increased mesolimbic dopamine (DA) activity. However, previous studies have not yielded clear evidence of this. Disturbances in the gamma-amino-butyric acid (GABA)-ergic system as well as the dopaminergic system are thought to be present in schizophrenia. To determine whether GABA(A) receptors play a role in the abnormal postpubertal behavior in NVHL rats, we compared changes in expression of mRNA of GABA(A) receptor subunits and in [(35)S] t-butylbicyclophosphorothionate ([(35)S] TBPS) binding in the prepubertal and postpubertal periods. Male pups were lesioned with ibotenic acid at postnatal day 7 (PD 7), and in situ hybridization and quantitative autoradiography were then performed. In NVHL rats, alpha1 subunit mRNA expression in prefrontal cortex was decreased at PD 35 (prepubertal period; by 21.7%), but increased at PD 56 (postpubertal period; by 21.4%) when compared with sham controls. beta2 subunit mRNA expression was increased in PFC in the postpubertal period (by 24.3%). beta3 subunit mRNA expression was increased in the caudate-putamen in the postpubertal period (by 37.2%). [(35)S] TBPS binding was increased in PFC only in the postpubertal period (by 17.7%). These findings suggest that dysfunction of the GABAergic system exists in NVHL rats. Furthermore, developmental and regional changes in GABA(A) receptor expression appear to occur in compensation for the attenuation of GABAergic system activity in NVHL rats." @default.
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- W2018966412 date "2007-01-01" @default.
- W2018966412 modified "2023-10-18" @default.
- W2018966412 title "Alterations in GABAA receptor expression in neonatal ventral hippocampal lesioned rats: Comparison of prepubertal and postpubertal periods" @default.
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- W2018966412 doi "https://doi.org/10.1002/syn.20393" @default.
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