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高血氨大鼠服用乳酸菌后焦虑降低和认知功能改善

, PP. 208-217

Keywords: 高血氨,益生菌,认知,焦虑,神经炎,五羟色胺

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Abstract:

相关证据表明,高血氨(HA)引发的神经炎和五羟色胺(5-HT)系统异常可能是导致肝性脑病(HE)认知功能下降和焦虑症状的原因.服用益生菌可能是治疗HE神经精神症状的有效措施,因为益生菌在维护免疫系统平衡和调节5-HT系统活动中发挥了重要的作用.检验了益生菌瑞士乳杆菌NS8改善HA大鼠认知功能下降和焦虑行为的有效性.通过连续4周的腹腔注射醋酸铵造成Sprague-Dawley大鼠的高血氨.然后让HA大鼠每日饮用添加了瑞士乳杆菌NS8(109CFU/mL)的饮水.Morris水迷宫测试大鼠的认知功能,高架十字测试大鼠的焦虑行为.脑区神经炎的程度以炎性标记物诱导型一氧化氮合酶、前列腺素E2和白介素1β的水平表示.5-HT系统的活动以5-HT,5-HIAA(5-HT的代谢物)以及色氨酸(5-HT的前体物质)的水平表示.益生菌处理显著地降低了HA大鼠的神经炎程度,减少了5-HT系统的活动,改善了认知功能和焦虑行为.这些结果说明,服用益生菌瑞士乳杆菌NS8是治疗HA大鼠认知功能下降和焦虑的有效方法.

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