title: Polymorphisms at the beta2-adrenergic receptor gene influence Alzheimer's disease susceptibility.
abstract: Increasing evidence indicates that the beta2-adrenergic receptor (beta2-AR) may play an important role in Alzheimer's disease (AD). We investigated the effect of two polymorphisms in the beta2-AR gene: Gly16Arg and Gln27Glu for the risk of sporadic Late Onset Alzheimer's Disease (LOAD) in 109 patients and 109 healthy controls matched for sex and age in a Han Chinese population. Results revealed that both the 16Gly allele and the 27Glu allele of the beta2-AR gene were associated with an increased risk of LOAD (P=0.009, OR=1.652 and P=0.002, OR=2.846, respectively), and they also showed a highly significant interaction with the Apolipoprotein E gene (APOE) epsilon4 allele (OR=4.200 and 9.441, respectively). Examination of the haplotypes identified the Gly16Glu27 haplotype to increase the risk of LOAD (P=0.004). Our results suggest that variations in the beta2-AR gene play an important role in the pathogenesis of sporadic LOAD, and interact with the epsilon4 allele to markedly increase the LOAD risk.
authors.affiliation: Department of Neurology, Qingdao Municipal Hospital, Affiliated Hospital of Qingdao University Medical College, Shandong Province, PR China.
authors.forename: Jin-Tai
authors.initials: JT
authors.lastname: Yu
authors.forename: Lan
authors.initials: L
authors.lastname: Tan
authors.forename: Jiang-Rong
authors.initials: JR
authors.lastname: Ou
authors.forename: Jun-Xia
authors.initials: JX
authors.lastname: Zhu
authors.forename: Kun
authors.initials: K
authors.lastname: Liu
authors.forename: Jing-Hui
authors.initials: JH
authors.lastname: Song
authors.forename: Yan-Ping
authors.initials: YP
authors.lastname: Sun
mesh_terms: D000368:Aged; D000544:Alzheimer Disease / Q000208:ethnology / Q000235:genetics* / Q000378:metabolism; D053327:Apolipoprotein E4 / Q000235:genetics; D001921:Brain / Q000378:metabolism / Q000503:physiopathology; D001923:Brain Chemistry / Q000235:genetics*; D002395:Catecholamines / Q000378:metabolism; D002681:China / Q000208:ethnology; D004252:DNA Mutational Analysis; D005260:Female; D005787:Gene Frequency; D005819:Genetic Markers / Q000235:genetics; D020022:Genetic Predisposition to Disease / Q000235:genetics*; D005820:Genetic Testing; D005838:Genotype; D006239:Haplotypes / Q000235:genetics; D006801:Humans; D008297:Male; D009154:Mutation; D011110:Polymorphism, Genetic / Q000235:genetics*; D018343:Receptors, Adrenergic, beta-2 / Q000235:genetics*
chemical_list: D053327:Apolipoprotein E4; D002395:Catecholamines; D005819:Genetic Markers; D018343:Receptors, Adrenergic, beta-2