Journal
JOURNAL OF CLINICAL MEDICINE
Volume 12, Issue 4, Pages -Publisher
MDPI
DOI: 10.3390/jcm12041459
Keywords
renin-angiotensin system; chronic kidney disease; Alzheimer's disease
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Chronic kidney disease (CKD) and Alzheimer's disease (AD) are common in the aging population, but the connection between them is still unclear. This review shows that the development of CKD may contribute to AD, especially through the renin-angiotensin system (RAS).
Chronic kidney disease (CKD) is a clinical syndrome secondary to the definitive change in function and structure of the kidney, which is characterized by its irreversibility and slow and progressive evolution. Alzheimer's disease (AD) is characterized by the extracellular accumulation of misfolded beta-amyloid (A beta) proteins into senile plaques and the formation of neurofibrillary tangles (NFTs) containing hyperphosphorylated tau. In the aging population, CKD and AD are growing problems. CKD patients are prone to cognitive decline and AD. However, the connection between CKD and AD is still unclear. In this review, we take the lead in showing that the development of the pathophysiology of CKD may also cause or exacerbate AD, especially the renin-angiotensin system (RAS). In vivo studies had already shown that the increased expression of angiotensin-converting enzyme (ACE) produces a positive effect in aggravating AD, but ACE inhibitors (ACEIs) have protective effects against AD. Among the possible association of risk factors in CKD and AD, we mainly discuss the RAS in the systemic circulation and the brain.
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