title: Effects of BDNF Val66Met polymorphism on brain metabolism in Alzheimer's disease.
abstract: 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.
authors.affiliation: LIAMA Center for Computational Medicine, National Laboratory of Pattern Recognition, Institute of Automation, Chinese Academy of Sciences, Beijing, China.
authors.forename: Cunlu
authors.initials: C
authors.lastname: Xu
authors.forename: Zhenhua
authors.initials: Z
authors.lastname: Wang
authors.forename: Ming
authors.initials: M
authors.lastname: Fan
authors.forename: Bing
authors.initials: B
authors.lastname: Liu
authors.forename: Ming
authors.initials: M
authors.lastname: Song
authors.forename: Xiantong
authors.initials: X
authors.lastname: Zhen
authors.forename: Tianzi
authors.initials: T
authors.lastname: Jiang
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D000544:Alzheimer Disease / Q000235:genetics* / Q000378:metabolism*; D019943:Amino Acid Substitution / Q000235:genetics; D001481:Basal Metabolism / Q000235:genetics; D001921:Brain / Q000000981:diagnostic imaging / Q000378:metabolism*; D001931:Brain Mapping / Q000379:methods; D019208:Brain-Derived Neurotrophic Factor / Q000737:chemistry / Q000235:genetics*; D003072:Cognition Disorders / Q000000981:diagnostic imaging / Q000378:metabolism; D005260:Female; D006580:Genetic Carrier Screening; D020022:Genetic Predisposition to Disease / Q000235:genetics; D006801:Humans; D008297:Male; D008715:Methionine / Q000235:genetics; D008875:Middle Aged; D020641:Polymorphism, Single Nucleotide / Q000235:genetics*; D049268:Positron-Emission Tomography / Q000379:methods; D014633:Valine / Q000235:genetics
chemical_list: D019208:Brain-Derived Neurotrophic Factor; D008715:Methionine; D014633:Valine