Journal
MOLECULAR AND CELLULAR ENDOCRINOLOGY
Volume 307, Issue 1-2, Pages 176-184Publisher
ELSEVIER IRELAND LTD
DOI: 10.1016/j.mce.2009.02.012
Keywords
Advanced glycation end products; Peroxisome proliferator-activated receptor gamma; Neural stem cells; Neurogenesis
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Funding
- National Nature Science Foundation of China [30870870, 30600206]
- Nature Science Foundation of JiangSu [BK2008302]
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Hyperglycemia is accompanied by an accelerated rate of advanced glycation end products (AGEs) formation, which is found to be associated with the pathogenesis of diabetic cognitive deficit, including Alzheimer's disease (AD). Peroxisome proliferator-activated receptor gamma (PPAR gamma) plays an important role in controlling the proliferation of neural stem cells (NSCs) and their neuronal differentiation. We investigate the hypothesis that PPAR gamma could mediate AGEs-related regulation of NSCs, by which AGEs possibly fulfill important roles in diabetic-related cognitive impairment. We found that AGEs down-regulated the proliferation and neurogenic differentiation of NSCs, and protein level of PPAR gamma. PPAR gamma agonist reversed the proliferation through the aid of AGE-BSA, with the exclusion of the neuronal differentiation of the NSCs which were also downregulated by AGE-BSA. These findings extend our understanding of the central role of PPAR gamma in AGEs-related neurogenesis impairment, which probably increased risks of cognitive deficits or AD in diabetic patients. (C) 2009 Elsevier Ireland Ltd. All rights reserved.
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