title: [The polymorphism of catechol-O-methyltransferase (COMT) and hemochromatosis (HFE) genes in the radiocontaminated regions residents with different chromosome aberration frequency].
abstract: The association between polymorphisms in genes COMT, HFE that takes part in oxidative stress regulation, and chromosome aberration frequency in lymphocytes was assessed in 278 female residents of radiation polluted regions of Central Russia: Bryansk (322 kBk/m2) and Tula Districts (137Cs - 171 kBk/m2). The C187G, G845A genotyping of HFE and G1947A (H/L) of COMT was done by means of polymerase chain reaction-restriction fragment length polymorphism. Studied population was divided into 3 subgroups by level of chromosome aberrations per cell (0-2, 3-4, >5). There was shown statistically significant difference in distribution of COMTand HFE genotypes between the groups. The high frequency of chromosome aberrations (> or = 5%) was associated with homozygotes of the high activity COMT G/G and HFE CC. Heterozygotes for G1947A COMT and C187G HFE reveal negative association with the high frequency of chromosome aberrations and correspond to "resistance factors".
authors.forename: T I
authors.initials: TI
authors.lastname: Ivanova
authors.forename: T V
authors.initials: TV
authors.lastname: Kondrashova
authors.forename: L I
authors.initials: LI
authors.lastname: Krikunova
authors.forename: I A
authors.initials: IA
authors.lastname: Smirnova
authors.forename: N I
authors.initials: NI
authors.lastname: Shentereva
authors.forename: N I
authors.initials: NI
authors.lastname: Sychenkova
authors.forename: E V
authors.initials: EV
authors.lastname: Rykova
authors.forename: I A
authors.initials: IA
authors.lastname: Zharikova
authors.forename: V A
authors.initials: VA
authors.lastname: Khorokhorina
authors.forename: N I
authors.initials: NI
authors.lastname: Riabchenko
authors.forename: I A
authors.initials: IA
authors.lastname: Zamulaeva
mesh_terms: D000328:Adult; D002394:Catechol O-Methyltransferase / Q000235:genetics*; D002588:Cesium Radioisotopes / Q000633:toxicity; D047852:Chernobyl Nuclear Accident; D002869:Chromosome Aberrations; D005260:Female; D005787:Gene Frequency; D000071020:Hemochromatosis Protein; D015395:Histocompatibility Antigens Class I / Q000235:genetics*; D006801:Humans; D007889:Leiomyoma / Q000235:genetics; D008565:Membrane Proteins / Q000235:genetics*; D018384:Oxidative Stress / Q000235:genetics; D012150:Polymorphism, Restriction Fragment Length; D020641:Polymorphism, Single Nucleotide; D011832:Radiation Injuries / Q000235:genetics*; D012426:Russia; D014594:Uterine Neoplasms / Q000235:genetics
chemical_list: D002588:Cesium Radioisotopes; C103673:HFE protein, human; D000071020:Hemochromatosis Protein; D015395:Histocompatibility Antigens Class I; D008565:Membrane Proteins; D002394:Catechol O-Methyltransferase