Alzheimer's Dementia:上海衰老研究:血清代谢标志物可提前预测痴呆

2020-12-30 MedSci原创 MedSci原创

血清谷氨酰胺和 O-乙酰糖蛋白水平升高与痴呆风险增加相关

 
痴呆症已成为一个重大的公共卫生挑战,并造成了相当大的经济负担。然而,目前还没有有效的预防和治疗迟发性痴呆症(late-onset clinical dementia)。淀粉样级联反应假说和血管功能障碍一直是痴呆研究中的两个主要致病概念。然而,抗淀粉样蛋白抗体治疗不能改善阿尔茨海默病(AD)患者的认知功能,同样,血管因素的控制对减轻痴呆的进展作用不大。因此,有必要了解痴呆的其他病理生理通路,以开发治疗靶点,并检测有助于早期识别高危人群的生物标志物,以启动预防、监测和治疗。
 
利用血液代谢组学方法检测循环代谢物,藉此反映遗传和环境因素的相互作用以及脑或脑嵴液的代谢变化,这种方法对于探索痴呆的病理生理学和确定痴呆的生物标志物是很有希望的。最近的研究表明,改变的血清代谢物与痴呆症的发生有关,然而,这些研究都是在发达国家进行的,而且结果不一致。
 
复旦大学的崔梅等人,采用核磁共振技术(nuclear magnetic resonance, NMR),对上海市老年研究(Shanghai Aging Study)5年随访的1440名无痴呆患者血清中38种代谢产物进行了分析。
结果显示: 血清谷氨酰胺和 O-乙酰糖蛋白水平升高与痴呆风险增加相关,而谷氨酸、酪氨酸、乙酸、甘氨酸和苯丙氨酸与痴呆呈负相关。此外,通过LASSO ( least absolute shrinkage and selection operator)方法筛选出的由5种代谢产物组成组合,可以预测痴呆。
 
这个来临床研究队列的重要意义在于,基于中国人群,他们鉴定了七种能间接预测痴呆的血清代谢标志物。然和,这些发现和潜在的生物学机制需要在未来的研究中进一步重复和阐明。
 
 

 
 
 
 

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    2020-12-30 junJUN

    老年人痴呆何药可用??

    0

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    2020-12-30 Lizhihua6

    上海衰老研究:血清代谢标志物可提前预测痴呆 49分钟前 来源:MedSci原创

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