Preproenkephalin RNA increases in the hypothalamus of rats stressed by social deprivation

Preproenkephalin RNA increases in the hypothalamus of rats stressed by social deprivation
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社交剥夺应激大鼠下丘脑前脑啡肽原 RNA 增加

DOI:
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发表时间:
1992
影响因子:
4
通讯作者:
J. Fuentes
J. Fuentes
中科院分区:
医学3区
文献类型:
--
作者:
T. Iglesias;S. Montero;M. J. Otero;L. Parra;J. Fuentes

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1.药理学证据表明,短期(14 - 20天)社会剥夺诱导的大鼠应激与中枢前脑啡肽原(ENK)阿片系统的激活有关。2.用特异性ENK互补DNA探针,通过斑点杂交和北方杂交分析,检测了社交剥夺大鼠不同脑区ENK RNA水平。3.短暂的社会剥夺可增加下丘脑ENK RNA和脑啡肽的免疫反应水平。4.我们的数据表明,这种类型的应激可能与下丘脑ENK基因转录的诱导有关。
Summary1.Pharmacological evidence indicates that stress induced by brief (14 to 20-day) social deprivation in the rat is associated with an activation of the central preproenkephalin (ENK) opioid system. This study examines the neurochemical evidence that substantiates such an activation.2.Using a specific ENK complementary DNA probe, ENK RNA levels were measured by dot blot and Northern blot analyses in different brain areas of socially deprived rats. Immunoreactivity to met-enkephalin-derived peptides was also evaluated by radioimmunoassay in the same brain regions.3.Brief social deprivation increased the levels of ENK RNA and enkephalin immunoreactivity in whole hypothalamus.4.Our data suggest that this type of stress appears to be associated to an induction of ENK gene transcription in hypothalamus.
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