PMID- 22704848 OWN - NLM STAT- MEDLINE DCOM- 20121126 LR - 20181217 IS - 1873-5487 (Electronic) IS - 0188-4409 (Linking) VI - 43 IP - 4 DP - 2012 May TI - Effects of single nucleotide polymorphisms in K(ATP) channel genes on type 2 diabetes in a Turkish population. PG - 317-23 LID - 10.1016/j.arcmed.2012.06.001 [doi] AB - BACKGROUND AND AIMS: ATP-sensitive potassium (K(ATP)) channels of pancreatic beta-cells play a key role in glucose-stimulated insulin secretion mechanism. The Kir6.2 protein, forming the K(ATP) channel pore inwardly, and the SUR1 protein that surrounds it forming the outside part of the channel were encoded by ABCC8 and KCNJ11 genes, respectively. Recent studies reported that the single nucleotide polymorphisms (SNPs) established in these genes are associated with defects in insulin secretion and type 2 diabetes mellitus (T2DM). We aimed to investigate the allele profiles and the risk alleles of the ABCC8 and KCNJ11 genes and to highlight the associations with the disease in patients in Konya region of Turkey where T2DM is common. METHODS: In this study, 169 patients with T2DM and 119 healthy controls were included. A total of 29 SNPs in ABCC8 and KCNJ11 genes were screened by PCR-SSCP technique and sequenced. Biochemical parameters and genotype-phenotype relationships were analyzed using variance analysis. RESULTS: R1273R silent substitution in exon 31 and 16/-3t-->c substitution in noncoding region of exon 16 of ABCC8 gene showed a significant association (OR 4.8 [95% CI 2.41-9.77], p <0.001 and OR 3.5 [95% CI 1.64-7.40], p <0.001 under dominant and recessive models, respectively). We detected a significant association between E/K heterozygote genotype and reduced plasma insulin level in patients with T2DM (p <0.05). CONCLUSIONS: ABCC8 exons 16 and 31 variants increase susceptibility to T2DM and KCNJ11 E23K decreases insulin secretion in a Turkish population. CI - Copyright (c) 2012 IMSS. Published by Elsevier Inc. All rights reserved. FAU - Gonen, Mustafa Sait AU - Gonen MS AD - Department of Endocrinology, Meram Medical Faculty, Selcuk University, Konya, Turkey. saitgonen@selcuk.edu.tr FAU - Arikoglu, Hilal AU - Arikoglu H FAU - Erkoc Kaya, Dudu AU - Erkoc Kaya D FAU - Ozdemir, Hulya AU - Ozdemir H FAU - Ipekci, Suleyman Hilmi AU - Ipekci SH FAU - Arslan, Ahmet AU - Arslan A FAU - Kayis, Seyit Ali AU - Kayis SA FAU - Gogebakan, Bulent AU - Gogebakan B LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20120613 PL - United States TA - Arch Med Res JT - Archives of medical research JID - 9312706 RN - 0 (ABCC8 protein, human) RN - 0 (ATP-Binding Cassette Transporters) RN - 0 (Insulin) RN - 0 (Kir6.2 channel) RN - 0 (Potassium Channels, Inwardly Rectifying) RN - 0 (Receptors, Drug) RN - 0 (Sulfonylurea Receptors) SB - IM MH - ATP-Binding Cassette Transporters/*genetics MH - Adult MH - Aged MH - Aged, 80 and over MH - DNA Mutational Analysis MH - Diabetes Mellitus, Type 2/blood/ethnology/*genetics MH - Exons/genetics MH - Female MH - Genes, Dominant MH - Genes, Recessive MH - Genetic Predisposition to Disease MH - Genotype MH - Humans MH - Insulin/blood/*metabolism MH - Insulin Resistance/genetics MH - Insulin Secretion MH - Male MH - Middle Aged MH - *Polymorphism, Single Nucleotide MH - Potassium Channels, Inwardly Rectifying/*genetics MH - Receptors, Drug/*genetics MH - Sulfonylurea Receptors MH - Turkey/epidemiology EDAT- 2012/06/19 06:00 MHDA- 2012/12/10 06:00 CRDT- 2012/06/19 06:00 PHST- 2011/08/04 00:00 [received] PHST- 2012/05/24 00:00 [accepted] PHST- 2012/06/19 06:00 [entrez] PHST- 2012/06/19 06:00 [pubmed] PHST- 2012/12/10 06:00 [medline] AID - S0188-4409(12)00156-7 [pii] AID - 10.1016/j.arcmed.2012.06.001 [doi] PST - ppublish SO - Arch Med Res. 2012 May;43(4):317-23. doi: 10.1016/j.arcmed.2012.06.001. Epub 2012 Jun 13.