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Evidence for the involvement of neuronal nitric oxide synthase and soluble guanylate cyclase on cognitive functions in rats.

机译:神经元一氧化氮合酶和可溶性胍酸盐环化酶参与的证据对大鼠认知函数的影响。

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AIMS: The influence of 3-bromo-7-nitroindazole (3-Br 7-NI), a potent and selective neuronal nitric oxide synthase (nNOS) inhibitor, and [1H-[1,2,4]-oxadiazole[4,3a]-quinoxaline-1-one] (ODQ), a highly selective, irreversible inhibitor of soluble guanylate cyclase (sGC), on working and reference memory and emotional learning was investigated in rats. MAIN METHODS: The effects were assessed in the three-panel runway and step-down passive avoidance task, respectively. KEY FINDINGS: 3-Br 7-NI (5, 10, and 20mg/kg) and ODQ (5, 10, and 20mg/kg) significantly increased the number of errors and latency of both working and reference memory performance of rats and impaired retention for the passive avoidance task. The effect of 3-Br 7-NI was reversed by l-arginine (250 mg/kg). SIGNIFICANCE: Findings of the study supported the hypothesis that nNOS inhibition disrupts reference and working memory processes in terms of an impairment in the strategies used for solving learning tasks, and, according to these results, nNOS-sGC may be required for emotional learning and both reference and working memory.
机译:目的:3-溴-7-硝基吲唑(3-BR 7-NI),有效和选择性神经元一氧化氮合酶(NNOS)抑制剂的影响和[1H- [1,2,4] - 脱唑[4, 3A] - 在大鼠中研究了高度选择性,可溶于胍基环化酶(SGC)的高度选择性,不可逆的抑制剂,并在大鼠中进行了高等选择性的,不可逆的血晶环化酶(SGC)和情绪学习。主要方法:分别在三面板跑道和降压被动避免任务中评估了效果。主要发现:3-BR 7-Ni(5,10和20mg / kg)和ODQ(5,10和20mg / kg)显着增加了大鼠的工作和参考记忆性能的误差和延迟的数量和障碍保留被动避免任务。通过L-精氨酸(250mg / kg)反转3-Br 7-Ni的效果。意义:研究结果支持的假设,即NNOS抑制在用于解决学习任务的策略中的损伤方面扰乱参考和工作记忆过程,并且根据这些结果,可能需要NNOS-SGC来表达情感学习和两者参考和工作记忆。

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