title: Association between the brain-derived neurotrophic factor Val66Met polymorphism and brain morphology in a Japanese sample of schizophrenia and healthy comparisons.
abstract: Magnetic resonance imaging was used to investigate the relation between the brain-derived neurotrophic factor (BDNF) Val66Met polymorphism and volumetric measurements for the medial temporal lobe structures (amygdala, hippocampus, and parahippocampal gyrus) and prefrontal sub-regions (the superior frontal gyrus, middle frontal gyrus, inferior frontal gyrus, ventral medial prefrontal cortex, orbitofrontal cortex, and straight gyrus) in a Japanese sample of 33 schizophrenia patients and 29 healthy subjects. For the controls, the Met carriers had significantly smaller parahippocampal and left superior frontal gyri than the Val homozygotes. The schizophrenia patients carrying the Met allele had a significantly smaller right parahippocampal gyrus than those with the Val/Val genotype, but the genotype did not affect the prefrontal regions in schizophrenia patients. These findings might reflect different genotypic effects of BDNF on brain morphology in schizophrenia patients and healthy controls, implicating the possible role of the brain morphology as an endophenotype for future genetic studies in schizophrenia.
authors.affiliation: Department of Neuropsychiatry, University of Toyama, 2630 Sugitani, Toyama 930-0194, Japan.
authors.forename: Tsutomu
authors.initials: T
authors.lastname: Takahashi
authors.forename: Michio
authors.initials: M
authors.lastname: Suzuki
authors.forename: Masahiko
authors.initials: M
authors.lastname: Tsunoda
authors.forename: Yukiko
authors.initials: Y
authors.lastname: Kawamura
authors.forename: Nagahide
authors.initials: N
authors.lastname: Takahashi
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Tsuneki
authors.forename: Yasuhiro
authors.initials: Y
authors.lastname: Kawasaki
authors.forename: Shi-Yu
authors.initials: SY
authors.lastname: Zhou
authors.forename: Soushi
authors.initials: S
authors.lastname: Kobayashi
authors.forename: Toshiyasu
authors.initials: T
authors.lastname: Sasaoka
authors.forename: Hikaru
authors.initials: H
authors.lastname: Seto
authors.forename: Masayoshi
authors.initials: M
authors.lastname: Kurachi
authors.forename: Norio
authors.initials: N
authors.lastname: Ozaki
mesh_terms: D000328:Adult; D019943:Amino Acid Substitution / Q000235:genetics; D001284:Atrophy / Q000378:metabolism / Q000473:pathology / Q000503:physiopathology; D001921:Brain / Q000378:metabolism / Q000473:pathology* / Q000503:physiopathology; D019208:Brain-Derived Neurotrophic Factor / Q000737:chemistry / Q000235:genetics*; D004252:DNA Mutational Analysis; D005260:Female; D007839:Functional Laterality / Q000235:genetics; D005787:Gene Frequency / Q000235:genetics; D005819:Genetic Markers / Q000235:genetics; D020022:Genetic Predisposition to Disease / Q000235:genetics*; D005820:Genetic Testing; D005838:Genotype; D006801:Humans; D007564:Japan; D008279:Magnetic Resonance Imaging; D008297:Male; D008715:Methionine / Q000235:genetics; D020534:Parahippocampal Gyrus / Q000378:metabolism / Q000473:pathology / Q000503:physiopathology; D011110:Polymorphism, Genetic / Q000235:genetics*; D012559:Schizophrenia / Q000235:genetics* / Q000378:metabolism / Q000473:pathology*; D014633:Valine / Q000235:genetics
chemical_list: D019208:Brain-Derived Neurotrophic Factor; D005819:Genetic Markers; D008715:Methionine; D014633:Valine