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Sustained choroid plexus function in human elderly and Alzheimer’s disease patients

机译:老年人和阿尔茨海默氏病患者的脉络丛神经功能持续维持

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摘要

We and other investigators have postulated deterioration of essential choroid plexus (CP) functions in some elderly and especially Alzheimer’s disease patients based on apparent anatomical, histological and pathological changes in CP. We have termed this putative phenomenon CP failure. By focusing on four essential energy-requiring CP functions, specifically ascorbic acid (AA) and folate transport from blood into CSF, transthyretin synthesis and secretion into CSF, and electrolyte/acid–base balance in CSF, we were able to evaluate the hypothesis of CP failure by reviewing definitive human data. In both healthy elderly and Alzheimer’s disease patients, the CP functions normally to transport AA and folates actively from blood into CSF, synthesize and secrete transthyretin into CSF, and maintain CSF acid–base balance and ion concentrations. These human CSF compositional data provide no support for the notion of CP failure in elderly humans and Alzheimer’s disease patients.
机译:我们和其他研究人员根据CP的明显解剖,组织学和病理学变化,推测某些老年患者,尤其是阿尔茨海默氏病患者的脉络膜神经丛(CP)功能会恶化。我们将这种假定现象称为CP故障。通过关注四个基本的需要能量的CP功能,特别是抗坏血酸(AA)和叶酸从血液进入CSF,运甲状腺素蛋白合成和分泌到CSF中以及CSF中电解质/酸碱平衡,我们能够评估通过检查确定的人类数据来避免CP失败。在健康的老年患者和阿尔茨海默氏病患者中,CP均正常发挥作用,将AA和叶酸从血液中主动转运到CSF中,合成并分泌运甲状腺素蛋白到CSF中,并维持CSF酸碱平衡和离子浓度。这些人类CSF成分数据不支持老年人和阿尔茨海默氏病患者的CP衰竭概念。

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