摘要
目的:阿尔茨海默病(Alzheimer''s disease, AD)是一种常见的神经退行性疾病,症状为认知障碍、学习和记忆能力下降。代谢组学可以反映AD过程中相关的功能状态和生理病理变化。艾灸是一种独特的中医方法,几千年来一直用于治疗和预防疾病。 方法:采用随机数字表法将32只APP/PS1小鼠随机分为模型组、艾灸组、艾烟组和无烟艾灸组(n=8/组),8只C57BL/6小鼠作为对照组。5组测定时间分别为20 min/d、6 d /d、4周。实验4周后,将所有小鼠置于代谢笼中连续采集尿液24小时,进行UPLC-MS分析。 结果:采用主成分分析(PCA)确定5组间的不同代谢物,采用偏最小二乘判别分析(PLS-DA)分析对代谢方差的影响。在5个类群中鉴定出16个潜在的生物标志物,主要与氨基酸代谢、淀粉代谢、蔗糖代谢、戊糖和葡萄糖醛酸的相互转化以及氨基酰的生物合成有关。有17个潜在的差异代谢物之间的控制和模型组,包括氨基酸的代谢、嘌呤、嘧啶、烟酸和烟酰胺和生物合成泛酸盐和辅酶A。15个潜在生物标志物被识别在模型和艾灸组之间,与淀粉代谢相关,蔗糖代谢,互变现象戊糖和葡萄糖醛酸酯、乙醛酸,二羧酸根阴离子和一些氨基酸代谢。 结论:艾灸可通过改善APP/PS1转基因AD模型小鼠碳水化合物和氨基酸的合成和分解来调节物质和能量的代谢。
关键词: 代谢组学,阿尔茨海默病,APP/PS1小鼠,UPLC-MS,艾灸,尿。
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