PMID- 23785672 OWN - NLM STAT- MEDLINE DCOM- 20140114 LR - 20221207 IS - 2242-3982 (Electronic) IS - 1239-9736 (Print) IS - 1239-9736 (Linking) VI - 72 DP - 2013 TI - Genetic polymorphisms in CYP1A1, CYP1B1 and COMT genes in Greenlandic Inuit and Europeans. PG - 21113 LID - 10.3402/ijch.v72i0.21113 [doi] AB - BACKGROUND: The Indigenous Arctic population is of Asian descent, and their genetic background is different from the Caucasian populations. Relatively little is known about the specific genetic polymorphisms in genes involved in the activation and detoxification mechanisms of environmental contaminants in Inuit and its relation to health risk. The Greenlandic Inuit are highly exposed to legacy persistent organic pollutants (POPs) such as polychlorinated biphenyls (PCBs) and organochlorine pesticides (OCPs), and an elucidation of gene-environment interactions in relation to health risks is needed. OBJECTIVES: The aim of this study was to determine and compare the genotype and allele frequencies of the cytochrome P450 CYP1A1 Ile462Val (rs1048943), CYP1B1 Leu432Val (rs1056836) and catechol-O-methyltransferase COMT Val158Met (rs4680) in Greenlandic Inuit (n=254) and Europeans (n=262) and explore the possible relation between the genotypes and serum levels of POPs. RESULTS: The genotype and allele frequency distributions of the three genetic polymorphisms differed significantly between the Inuit and Europeans. For Inuit, the genotype distribution was more similar to those reported for Asian populations. We observed a significant difference in serum polychlorinated biphenyl (CB-153) and the pesticide 1,1-dichloro-2,2-bis(p-chlorophenyl)-ethylene (p,p'-DDE) levels between Inuit and Europeans, and for Inuit also associations between the POP levels and genotypes for CYP1A1, CYP1B1 and COMT. CONCLUSION: Our data provide new information on gene polymorphisms in Greenlandic Inuit that might support evaluation of susceptibility to environmental contaminants and warrant further studies. FAU - Ghisari, Mandana AU - Ghisari M AD - Centre for Arctic Health and Unit of Cellular and Molecular Toxicology, Department of Public Health, Aarhus University, Denmark. FAU - Long, Manhai AU - Long M FAU - Bonefeld-Jorgensen, Eva C AU - Bonefeld-Jorgensen EC LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20130617 PL - United States TA - Int J Circumpolar Health JT - International journal of circumpolar health JID - 9713056 RN - EC 1.14.14.1 (Aryl Hydrocarbon Hydroxylases) RN - EC 1.14.14.1 (CYP1B1 protein, human) RN - EC 1.14.14.1 (Cytochrome P-450 CYP1A1) RN - EC 1.14.14.1 (Cytochrome P-450 CYP1B1) RN - EC 2.1.1.6 (Catechol O-Methyltransferase) SB - IM MH - Adult MH - Aged MH - Arctic Regions/epidemiology MH - Aryl Hydrocarbon Hydroxylases/*genetics MH - Catechol O-Methyltransferase/*genetics MH - Cytochrome P-450 CYP1A1/*genetics MH - Cytochrome P-450 CYP1B1 MH - Female MH - Gene Frequency MH - Genotype MH - Greenland/epidemiology MH - Humans MH - Inuit/*genetics MH - Male MH - Middle Aged MH - Polymorphism, Genetic MH - White People/*genetics PMC - PMC3683137 OTO - NOTNLM OT - COMT OT - Inuit OT - PCBs OT - cytochrome P450 OT - genetic polymorphism OT - persistent organic pollutants EDAT- 2013/06/21 06:00 MHDA- 2014/01/15 06:00 PMCR- 2013/01/01 CRDT- 2013/06/21 06:00 PHST- 2013/04/12 00:00 [received] PHST- 2013/05/13 00:00 [revised] PHST- 2013/05/13 00:00 [accepted] PHST- 2013/06/21 06:00 [entrez] PHST- 2013/06/21 06:00 [pubmed] PHST- 2014/01/15 06:00 [medline] PHST- 2013/01/01 00:00 [pmc-release] AID - 21113 [pii] AID - 10.3402/ijch.v72i0.21113 [doi] PST - epublish SO - Int J Circumpolar Health. 2013 Jun 17;72:21113. doi: 10.3402/ijch.v72i0.21113. Print 2013.