Abstract:
:Several lines of evidence have suggested altered functions of the brain-derived neurotrophic factor (BDNF) in the pathogenesis of neurodegenerative diseases including Alzheimer's disease (AD). In the search for polymorphisms in the 5'-flanking and 5'-noncoding regions of the BDNF gene, we found a novel nucleotide substitution (C270T) in the noncoding region. We performed an association study between this polymorphism and AD in a Japanese sample of 170 patients with sporadic AD (51 early-onset and 119 late-onset) and 498 controls. The frequency of individuals who carried the mutated type (T270) was significantly more common in patients with late-onset AD than in controls (P = 0.00004, odds ratio: 3.8, 95% CI 1.9-7.4). However, there was no significant difference in the genotype distribution between the patients with early-onset AD and the controls, although this might be due to the small sample size of the early-onset group. Our results suggest that the C270T polymorphism of the BDNF gene or other unknown polymorphisms, which are in linkage disequilibrium, give susceptibility to late-onset AD. We obtained no evidence for the possible interactions between the BDNF and apolipoprotein E (APOE) genes, suggesting that the possible effect of the BDNF gene on the development of late-onset AD might be independent of the APOE genotype.
journal_name
Mol Psychiatryjournal_title
Molecular psychiatryauthors
Kunugi H,Ueki A,Otsuka M,Isse K,Hirasawa H,Kato N,Nabika T,Kobayashi S,Nanko Sdoi
10.1038/sj.mp.4000792subject
Has Abstractpub_date
2001-01-01 00:00:00pages
83-6issue
1eissn
1359-4184issn
1476-5578journal_volume
6pub_type
杂志文章abstract::Chromosome 1q has been implicated in the etiology of schizophrenia in several independent studies. However, the peak linkage findings have been dispersed over a large chromosomal region, with negative findings in this region also being reported. Our group has previously observed linkage on chromosome 1q42, maximizing ...
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