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  • Title: Circulating levels of soluble receptor for advanced glycation end products in Alzheimer disease and vascular dementia.
    Author: Emanuele E, D'Angelo A, Tomaino C, Binetti G, Ghidoni R, Politi P, Bernardi L, Maletta R, Bruni AC, Geroldi D.
    Journal: Arch Neurol; 2005 Nov; 62(11):1734-6. PubMed ID: 16286548.
    Abstract:
    BACKGROUND: The receptor for advanced glycation end products (RAGE) is a cell surface receptor that has been implicated in vascular disease and neurodegeneration. Low levels of its secreted isoform, soluble RAGE (sRAGE), have been regarded as a putative risk factor for atherosclerosis. In addition, administration of sRAGE has been shown to reduce development of cerebral beta-amyloidosis in an Alzheimer disease mouse model. OBJECTIVE: To investigate the role of sRAGE as a biological marker for Alzheimer disease and vascular dementia. DESIGN: Cross-sectional study of 152 patients with a clinical diagnosis of Alzheimer disease, 91 with vascular dementia and 161 control subjects. MAIN OUTCOME MEASURE: Plasma levels of sRAGE. RESULTS: Levels of sRAGE were significantly reduced in the plasma of patients with Alzheimer disease compared with that for those with either vascular dementia (P<.05) or with controls (P<.001). CONCLUSIONS: Patients with Alzheimer disease have reduced levels of sRAGE in plasma compared with patients with vascular dementia and controls. The striking reduction of circulating sRAGE in Alzheimer disease further supports a role for the RAGE axis in this clinical entity and requires further investigation.
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