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- Olsson, Anders HLund University,Lunds universitet,Genomik, diabetes och endokrinologi,Forskargrupper vid Lunds universitet,Genomics, Diabetes and Endocrinology,Lund University Research Groups (author)
Two common genetic variants near nuclear encoded OXPHOS genes are associated with insulin secretion in vivo.
- Article/chapterEnglish2011
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- 2011
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- LIBRIS-ID:oai:lup.lub.lu.se:7e964bf0-f452-47a5-adab-778152ba01b9
- https://lup.lub.lu.se/record/1831761URI
- https://doi.org/10.1530/EJE-10-0995DOI
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- Language:English
- Summary in:English
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- Context Mitochondrial ATP production is important in the regulation of glucose-stimulated insulin secretion. Genetic factors may modulate the capacity of the β-cells to secrete insulin and thereby contribute to the risk of type 2 diabetes. OBJECTIVE: The aim of this study was to identify genetic loci in or adjacent to nuclear encoded genes of the oxidative phosphorylation (OXPHOS) pathway that are associated with insulin secretion in vivo. DESIGN AND METHODS: To find polymorphisms associated with glucose-stimulated insulin secretion, data from a genome-wide association study (GWAS) of 1467 non-diabetic individuals, the Diabetes Genetic Initiative (DGI), was examined. 413 single nucleotide polymorphisms (SNPs) with a minor allele frequency (MAF) ≥0.05 located in or adjacent to 76 OXPHOS genes were included in the DGI GWAS. A more extensive population based study of 4323 non-diabetics, the PPP-Botnia, was used as a replication cohort. Insulinogenic index during an oral glucose tolerance test (OGTT) was used as a surrogate marker of glucose-stimulated insulin secretion. Multivariate linear regression analyses were used to test genotype-phenotype associations. RESULTS: Two common variants were indentified in the DGI, where the major C-allele of rs606164, adjacent to NDUFC2 (NADH dehyrogenase (ubiqinone) 1 subunit C2), and the minor G-allele of rs1323070, adjacent to COX7A2 (cythochrome c oxidase subunit VIIa polypeptide 2), showed nominal associations with decreased glucose-stimulated insulin secretion (p=0.0009 respective p=0.003). These associations were replicated in PPP-Botnia (p=0.002 and p=0.05). CONCLUSION: Our study shows that genetic variation near genes involved in oxidative phosphorylation may influence glucose-stimulated insulin secretion in vivo.
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- Rönn, TinaLund University,Lunds universitet,Genomik, diabetes och endokrinologi,Forskargrupper vid Lunds universitet,Genomics, Diabetes and Endocrinology,Lund University Research Groups(Swepub:lu)med-tar (author)
- Ladenvall, ClaesLund University,Lunds universitet,Genomik, diabetes och endokrinologi,Forskargrupper vid Lunds universitet,Genomics, Diabetes and Endocrinology,Lund University Research Groups(Swepub:lu)med-cll (author)
- Parikh, Hemang (author)
- Isomaa, Bo (author)
- Groop, LeifLund University,Lunds universitet,Genomik, diabetes och endokrinologi,Forskargrupper vid Lunds universitet,Genomics, Diabetes and Endocrinology,Lund University Research Groups(Swepub:lu)endo-lgr (author)
- Ling, CharlotteLund University,Lunds universitet,Genomik, diabetes och endokrinologi,Forskargrupper vid Lunds universitet,Genomics, Diabetes and Endocrinology,Lund University Research Groups(Swepub:lu)endo-cl0 (author)
- Genomik, diabetes och endokrinologiForskargrupper vid Lunds universitet (creator_code:org_t)
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- In:European Journal of Endocrinology164:5, s. 765-7711479-683X
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