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Is the role of the angiotensin-converting enzyme gene in Alzheimer's disease independent of hypertension?

Translational Neuroscience and Clinics 2017年第2期3卷 97-103页

作者： Yuanhan Yang Shyhjong Wu chinchun huang Jongling Fuh Chingkuan Liu Department of Neurology Kaohsiung Municipal Ta-Tung Hospital Kaohsiung Medical University Department of Master’s Program in Neurology Kaohsiung Medical University Department of Neurology Kaohsiung Medical University Hospital Kaohsiung Medical University Department of Medical Laboratory Science and Biotechnology Kaohsiung Medical University Department of Neurology Linkou Chang Gung Memorial Hospital Faculty of Medicine "National Yang-Ming University Schools of Medicine" Department of Neurology Neurological Institute Taipei Veterans General Hospital

Objective: Angiotensin-converting enzyme(ACE) insertion/deletion(I/D) polymorphisms are considered biomarkers of late-onset Alzheimer's disease(AD). However, the results of studies of these polymorphisms have been inconsistent. The ACE protein directly degrades beta-amyloid and thereby slows the progression of AD and its onset. However, it also activates the renin–angiotensin–aldosterone system, which can contribute to hypertension and/or cardiovascular events that increase the risk for developing AD. Methods: In this study, we examined the bidirectional association of the ACE gene and AD in patients with AD with and without hypertension. Results: Patients who were clinically diagnosed with AD(n = 983) underwent ACE I/D genotyping. The distribution of the ACE I/D genotypes(P = 0.355 for I/I vs. D/D; P = 0.888 for I/D vs. D/D) and I alleles(P = 0.895) did not significantly differ between hypertensive patients with AD and patients with AD without hypertension. Conclusions: In contrast to traditional theories, the results of this study suggested that the contribution of the ACE gene to the development of AD was not associated with hypertension and similar cardiovascular effects.

关键词： angiotensin-converting enzyme Alzheimer’s disease hypertension beta-amyloid

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