首页> 外文期刊>Journal of Behavioral and Brain Science >GABAb Receptor Antagonist (CGP35348) Improves Testosterone Induced Spatial Acquisition Impairment in Adult Male Rat
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GABAb Receptor Antagonist (CGP35348) Improves Testosterone Induced Spatial Acquisition Impairment in Adult Male Rat

机译:GABAb受体拮抗剂(CGP35348)改善成年雄性大鼠睾丸激素诱导的空间获得障碍

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The high density of the androgen receptors in fundamental centers of learning and memory, such as hippocampus, shows that there must be some relationship between the androgen receptors and cognitive aspects. On the other hand, Gama Amino Butric Acid (GABA) plays a controlling role in the balance of excitability and inhibitory states in the cortex and hippocampus; a number of reports suggest that removal of the influence of inhibitory GABA receptors lead to memory enhancement and conversely the activation lead to memory inhibition. Sex steroids can rapidly influence neural activity by increasing the binding affinity of neurotransmitters such as GABAergic. To determine the effect of Testosterone on learning and memory in CA1 region of hippocampus, male albino Wistar rats (200 - 250 g) are bilaterally cannulated into CA1 of hippocampus then different doses of Testosterone enanthate or CGP35348 are injected through the cannulae for assessing of acquisition, consolidation and retrieval in a single-day testing protocol of Morris water maze task. After hippocampal microinjection with Testosterone (T), acquisition is significantly impaired, while after treatment with CGP35348, acquisition impairment caused by T can be significantly improved. Also T and CGP35348 have no significant effect on consolidation and retrieval stages of spatial memory. These results suggest that CGP35348 may have therapeutic value in the treatment of Testosterone-induced acquisition impairment.
机译:在学习和记忆的基本中心(如海马体),雄激素受体的密度很高,表明雄激素受体与认知方面之间一定存在某种关系。另一方面,伽马氨基丁酸(GABA)在皮层和海马的兴奋性和抑制状态的平衡中起控制作用。许多报告表明,去除抑制性GABA受体的影响会导致记忆增强,相反,激活会导致记忆抑制。性类固醇可以通过增加神经递质(如GABAergic)的结合亲和力来迅速影响神经活动。为了确定睾丸激素对海马CA1区学习和记忆的影响,将雄性白化Wistar大鼠(200-250 g)双向插管到海马CA1中,然后通过插管注射不同剂量的庚酸酯或CGP35348来评估获得性莫里斯水迷宫任务的单日测试协议中进行整合,合并和检索。海马显微注射睾丸激素(T)后,获得性明显受损,而CGP35348治疗后,由T引起的获得性损害可得到明显改善。 T和CGP35348对空间存储器的合并和检索阶段也没有显着影响。这些结果表明,CGP35348在睾丸激素诱发的获得性损伤的治疗中可能具有治疗价值。

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