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Who is the culprit to cause memory impairment during brain aging?

December 5th, 2013
Who is the culprit to cause memory impairment during brain aging?
Using the KEGG database, we performed signal-net analysis to construct networks of differentially expressed genes. Key genes identified include apoptosis-related, for example Bid and p53 that participate in the P53 signaling pathway, and insulin-like growth factor 1 (Igf1) that is involved in the IGF signaling pathway. Credit: Neural Regeneration Research

The N-methyl-D-aspartic acid (NMDA) receptor dysfunction in the brain of aged animals has been shown. In older rodents, N-methyl-D-aspartate receptor 2B subunit gene expression declines significantly associated with memory impairment. To further reveal this process, Dr. Chunxia Li and colleagues from East China Normal University, China analyzed gene expression profiles in the neocortex of aged Tg mice. Pathway and signal-net analyses identified multiple pathways altered in the transgenic mice. Further signal-net analysis highlighted the P53 and insulin-like growth factor pathways as key regulatory pathways. Meanwhile, these results were verified deeply by fluorescent quantitative PCR Technique and western blot.

These experimental findings, published in the Neural Regeneration Research (Vol. 8, No. 29, 2013), provide new insight into understanding the molecular mechanisms of NR2B regulated age-related memory storage, normal organismal aging and age-related disease.

More information:
Li CX, Su M, Wang HM, Hu YH. Global view of transcriptome in the brains of aged NR2B transgenic mice. Neural Regen Res. 2013;8(29):2734-2743.

Provided by Neural Regeneration Research

Citation: Who is the culprit to cause memory impairment during brain aging? (2013, December 5) retrieved 27 July 2026 from https://sciencex.com/wire-news/147695679/who-is-the-culprit-to-cause-memory-impairment-during-brain-aging.html
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