title: The nitric oxide synthase-3 codon 298 polymorphism is not associated with late-onset sporadic Alzheimer's dementia and Lewy body disease in a sample from Hungary.
abstract: An association study was performed between apolipoprotein E (apoE) polymorphism and the common structural polymorphism Glu/Asp at codon 298 of the nitric oxide synthase (NOS3) gene in late-onset sporadic Alzheimer's dementia probands (LOAD), diffuse Lewy body dementia cases (DLBD) and controls in a Hungarian sample. The frequency of individuals who carried the apoE epsilon4 allele was significantly more common in both dementia groups (LOAD, 20%; DLBD, 27%; control, 8%; control versus DLBD, chi2=13.264, degrees of freedom=2, P<0.001; control versus LOAD, chi2=6.628, degrees of freedom=2, P<0.036). However, there were no significant differences in the NOS3 genotype and allele distributions between the LOAD, DLBD and control groups. The apoE status has been found to be independent from the NOS3 codon 298 polymorphism in the examined cohort. Despite the facts that NOS3 is associated with neuritic sprouting, and aberrant neuronal and glial expression of the same molecule has been found in neurodegenerative diseases, it is unlikely that the polymorphism Glu/Asp of the NOS3 gene is involved in the development of LOAD and DLBD.
authors.affiliation: Department of Psychiatry, Albert Szent-Györgyi Center for Medical and Pharmaceutical Sciences, Faculty of Medicine, University of Szeged, Hungary. kalmanj@nepsy.szote.u-szeged.hu
authors.forename: János
authors.initials: J
authors.lastname: Kálmán
authors.forename: Anna
authors.initials: A
authors.lastname: Juhász
authors.forename: Agnes
authors.initials: A
authors.lastname: Rimanóczy
authors.forename: András
authors.initials: A
authors.lastname: Palotás
authors.forename: Miklós
authors.initials: M
authors.lastname: Palotás
authors.forename: Krisztina
authors.initials: K
authors.lastname: Boda
authors.forename: János
authors.initials: J
authors.lastname: Márki-Zay
authors.forename: Eva
authors.initials: E
authors.lastname: Csibri
authors.forename: Zoltán
authors.initials: Z
authors.lastname: Janka
mesh_terms: D017668:Age of Onset; D000368:Aged; D000544:Alzheimer Disease / Q000235:genetics*; D019943:Amino Acid Substitution; D001057:Apolipoproteins E / Q000235:genetics; D003062:Codon / Q000235:genetics; D005260:Female; D005838:Genotype; D006801:Humans; D006814:Hungary; D020961:Lewy Body Disease / Q000235:genetics*; D008297:Male; D019001:Nitric Oxide Synthase / Q000235:genetics*; D052250:Nitric Oxide Synthase Type III; D011110:Polymorphism, Genetic; D044465:White People
chemical_list: D001057:Apolipoproteins E; D003062:Codon; C496314:NOS3 protein, human; D019001:Nitric Oxide Synthase; D052250:Nitric Oxide Synthase Type III