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BDNF in the Aged Brain: Translational Implications for Parkinson's Disease
N M Mercado1, T J Collier1,2, C E Sortwell1,2
1Department of Translational Science & Molecular Medicine, College of Human Medicine, Michigan State University, USA.
Abstract:
Brain Derived Neurotrophic Factor (BDNF) is a member of the neurotrophin family of secreted growth factors. BDNF signaling is known to exert both chronic, pro-survival effects related to gene expression and protein synthesis ("canonical signaling"), and acute effects as a modulator of neurotransmission ("non-canonical signaling"). BDNF has received a great deal of attention for its role in neurodegenerative diseases including Huntington's Disease (HD), Alzheimer's Disease (AD), and Parkinson's Disease (PD) and has been extensively reviewed elsewhere in this regard (e.g., [1-6]). However aging-related changes in BDNF function and expression have been studied only rarely, with the majority of studies characterizing changes in structures such as the hippocampus and neocortex. In this review, we attempt to briefly summarize the extent of the existing literature on age-related BDNF changes, and discuss the relevance of these changes as a factor potentially impacting therapeutics in aged parkinsonian subjects.
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