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Genistein attenuates cognitive deficits and neuroapoptosis in hippocampus induced by ketamine exposure in neonatal rats.
SYNAPSE ( IF 1.6 ) Pub Date : 2020-07-08 , DOI: 10.1002/syn.22181
Qingsong Li 1 , Xi Zhang 1
Affiliation  

Ketamine is a frequently used anesthetic in pediatric patients that can cause cognitive impairment. Genistein, a bioactive component of soy products, has been shown to suppress neuronal death through regulating the expression of apoptosis related genes. In this study, we hypothesized that genistein could alleviate ketamine‐induced cognitive impairment by ameliorating hippocampal neuronal loss and tested this hypothesis in rats. Neonatal rats were treated with ketamine and genistein. Hippocampal tissue was harvested for histological and biochemical analysis to determine neuronal apoptosis and proteins involved in the apoptotic pathways. Behavioral assays including contextual fear conditioning test and Morris water maze test were performed to assess cognitive functions, including learning and memory. We found that in fear conditioning test, genistein restored freezing time in ketamine treated rats in a dose dependent manner. Similarly, genistein attenuated impaired learning and memory in Morris water maze test in rats treated with ketamine. Additionally, ketamine‐induced neuronal apoptosis in rat hippocampus was attenuated by genistein treatment. Finally, we found that genistein partially restored proteins associated with apoptosis, including Bax, Bcl‐2, cleaved caspase 3, and phosphorylated GSK‐3ß and Akt. Genistein suppresses hippocampal neuronal loss and cognitive disruption induced by ketamine in rats.

中文翻译:

金雀异黄素减轻新生大鼠氯胺酮暴露引起的海马认知缺陷和神经细胞凋亡。

氯胺酮是儿科患者常用的麻醉剂,可导致认知障碍。大豆产品中的一种生物活性成分染料木黄酮已被证明可以通过调节细胞凋亡相关基因的表达来抑制神经元死亡。在这项研究中,我们假设染料木黄酮可以通过改善海马神经元丢失来减轻氯胺酮引起的认知障碍,并在大鼠中测试了这一假设。新生大鼠用氯胺酮和染料木黄酮治疗。收获海马组织用于组织学和生化分析,以确定神经元凋亡和参与凋亡途径的蛋白质。进行了包括情境恐惧条件反射测试和莫里斯水迷宫测试在内的行为分析,以评估认知功能,包括学习和记忆。我们发现,在恐惧条件反射测试中,染料木黄酮以剂量依赖性方式恢复氯胺酮治疗大鼠的冷冻时间。同样,在用氯胺酮治疗的大鼠的莫里斯水迷宫试验中,染料木黄酮减轻了学习和记忆受损。此外,氯胺酮诱导的大鼠海马神经元凋亡通过染料木黄酮治疗减弱。最后,我们发现染料木黄酮部分恢复了与细胞凋亡相关的蛋白质,包括 Bax、Bcl-2、裂解的 caspase 3 以及磷酸化的 GSK-3ß 和 Akt。染料木素抑制氯胺酮引起的大鼠海马神经元丢失和认知障碍。氯胺酮诱导的大鼠海马神经元凋亡通过染料木黄酮治疗减弱。最后,我们发现染料木黄酮部分恢复了与细胞凋亡相关的蛋白质,包括 Bax、Bcl-2、裂解的 caspase 3 以及磷酸化的 GSK-3ß 和 Akt。染料木素抑制氯胺酮引起的大鼠海马神经元丢失和认知障碍。氯胺酮诱导的大鼠海马神经元凋亡通过染料木黄酮治疗减弱。最后,我们发现染料木黄酮部分恢复了与细胞凋亡相关的蛋白质,包括 Bax、Bcl-2、裂解的 caspase 3 以及磷酸化的 GSK-3ß 和 Akt。染料木素抑制氯胺酮引起的大鼠海马神经元丢失和认知障碍。
更新日期:2020-07-08
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