Modification of expression of neurohormones in hypothalamus of prenatally stressed male rats in model of posttraumatic stress disorder

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• 作者：S. G. Pivina ; V. V. Rakitskaya…
• 关键词：posttraumatic stress disorder (PTSD) ; “stress ; restress-/li> prenatal stress ; corticotrophin ; releasing hormone ; vasopressin ; hypothalamus ; rat
• 刊名：Journal of Evolutionary Biochemistry and Physiology
• 出版年：2014
• 出版时间：July 2014
• 年：2014
• 卷：50
• 期：4
• 页码：345-352
• 全文大小：157 KB
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• 作者单位：S. G. Pivina (1)
  V. V. Rakitskaya (1)
  I. V. Smolenskii (1)
  V. K. Akulova (1)
  N. E. Ordyan (1)
  
  1. Pavlov Institute of Physiology, Russian Academy of Sciences, St. Petersburg, Russia
  
• ISSN：1608-3202

文摘

By the method of quantitative immunohistochemistry there has been studied expression of corticotrophin-releasing hormone (CRH) and vasopressin in hypothalamic paraventricular nucleus (PVN) of prenatally stressed rats in the experimental model of the posttraumatic stress disorder-the paradigm “stress-restress- The prenatal stress was modeled by immobilization of pregnant female rats for 1 h from the 15th to the 19th day of pregnancy. It has been shown that in sexually mature males-descendants of stressed mothers-a decrease in immunoreactivity to CRH and vasopressin is observed in the parvocellular and magnocellular PVN areas 10 days after the restress. In the control group males born by intact mothers the level of immunoreactivity to CRH was increased in both PVN areas, whereas with respect to vasopressin-in the magnocellular area. Only in the prenatally stressed males there is detected a decrease in the corticosterone level in the blood plasma 10 days after the restress. It is concluded that in the control group males the manifestation of the pathological state in the paradigm “stress-restress-consists in hyperactivation of the hypothalamic chain of regulation of the hypothalamus-pituitary-adrenocortical system, whereas in the prenatally stressed animals, on the contrary, there is observed a decrease in activity both of the central (PVN) and of the peripheral (adrenal cortex) chain of this hormonal axis.