Effects of BDNF Val66Met polymorphism on brain metabolism in Alzheimer's disease.
Earlier studies showed that the Val66Met polymorphisms of the brain-derived neurotrophic factor differentially affect gray matter volume and brain region activities. This study used resting positron emission tomography to investigate the relationship between the polymorphisms of Val66Met and the regional cerebral metabolic rate in the brain. We analyzed the positron emission tomography images of 215 patients from the Alzheimer's Disease Neuroimaging Initiative and found significant differences in the parahippocampal gyrus, superior temporal gyrus, prefrontal cortex, and inferior parietal lobule when comparing Met carriers with noncarriers among both the normal controls and those with mild cognitive impairment. For those with Alzheimer's disease, we also found additional differences in the bilateral insula between the carriers and noncarriers.
Medical Subject Headings
Aged; Aged, 80 and over; Alzheimer Disease; Amino Acid Substitution; Basal Metabolism; Brain; Brain Mapping; Brain-Derived Neurotrophic Factor; Cognition Disorders; Female; Genetic Carrier Screening; Genetic Predisposition to Disease; Humans; Male; Methionine; Middle Aged; Polymorphism, Single Nucleotide; Positron-Emission Tomography; Valine
Digital Object Identifier (DOI)
Xu, Cunlu; Wang, Zhenhua; Fan, Ming; Liu, Bing; Song, Ming; Zhen, Xiantong; Jiang, Tianzi; and Sabbagh, Marwan N., "Effects of BDNF Val66Met polymorphism on brain metabolism in Alzheimer's disease." (2010). Neurology. 1082.