Ann Neurol:胰淀素作为2型糖尿病和阿尔茨海默病之间的潜在联系

2019-08-04 xing.T MedSci原创

由此可见,胰腺β细胞中的tau和Aβ包涵体以及脑中胰淀素沉积物的存在为T2DM和AD发病机制潜在重叠提供了新的证据。

阿尔茨海默病(AD)是痴呆的主要原因,虽然其病因尚不清楚,但似乎2型糖尿病(T2DM)和其他糖尿病前期胰岛素抵抗状态可能导致散发性AD的发生。近日,神经病学领域权威取杂志Annals of Neurology上发表了一篇研究文章,研究人员旨在评估患有AD的受试者胰腺组织中是否存在tau和Aβ沉积物,以及沉积在T2DM患者的胰腺中的淀粉样蛋白胰淀素是否可能在AD患者的脑中累积。 

研究人员分析了来自48名没有神经病理学改变的个体以及来自诊断为AD的87名受试者的胰腺和脑组织。研究人员评估了胰腺中Aβ和tau积聚,以及脑中胰淀素的积累情况。此外,研究人员进行邻近连接检测以确定tau和/或Aβ是否与这些受试者的胰腺或脑中的胰淀素相互作用。 

在患有AD的受试者以及在具有正常神经病理学检查但具有T2DM病史的受试者的胰腺β-细胞中检测到细胞质tau和Aβ蛋白沉积物。此外,研究人员在这些受试者的大脑中发现了胰淀素沉积,提供了胰腺和海马中胰淀素可以与Aβ和tau相互作用的组织学证据。 

由此可见,胰腺β细胞中的tau和Aβ包涵体以及脑中胰淀素沉积物的存在为T2DM和AD发病机制潜在重叠提供了新的证据。 

原始出处:

Ivan Martinez‐Valbuena,et al.Amylin as a potential link between type 2 diabetes and Alzheimer's disease.Annals of Neurology. 2019.https://doi.org/10.1002/ana.25570

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    2020-04-14 zhangph
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    2020-03-07 yinhl1978
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    2019-08-04 misszhang

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