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Family history of diabetes and its relationship with insulin secretion and insulin sensitivity in Iraqi immigrants and native Swedes: a population-based cohort study
Umeå University, Faculty of Medicine, Department of Public Health and Clinical Medicine. Department of Clinical Sciences, Lund University, Skåne University Hospital, Malmö, Sweden; Department of Diabetes and Endocrinology/Lund University Diabetes Centre, Skåne University Hospital, Malmö, Sweden; Genetic and Molecular Epidemiology Unit, Lund University, Malmö, Sweden; Department of Nutrition, Harvard School of Public Health, Boston, MA, USA.
2018 (English)In: Acta Diabetologica, ISSN 0940-5429, E-ISSN 1432-5233, Vol. 55, no 3, p. 233-242Article in journal (Refereed) Published
Abstract [en]

Aims Middle Eastern immigrants to western countries are at high risk of developing type 2 diabetes. However, the heritability and impact of rst-degree family history (FH) of type 2 diabetes on insulin secretion and action have not been adequately described. Methods Citizens of Malmö, Sweden, aged 30–75 years born in Iraq or Sweden were invited to participate in this population- based study. Insulin secretion (corrected insulin response and oral disposition index) and action (insulin sensitivity index) were assessed by oral glucose tolerance tests.

Results In total, 45.7% of Iraqis (616/1348) and 27.4% of native Swedes (201/733) had FH in parent(s), sibling(s) or single parent and sibling, i.e., FH+. Approximately 8% of Iraqis and 0.7% of Swedes had ≥ 3 sibling(s) and parent(s) with diabetes, i.e., FH++. Irrespective of family size, prediabetes and diabetes increased with family burden (FH− 29.4%; FH+ 38.8%; FH++ 61.7%) without signi cant di erences across ethnicities. With increasing level of family burden, insulin secretion rather than insulin action decreased. Individuals with a combination of ≥ 3 siblings and parents with diabetes presented with the lowest levels of insulin secretion.

Conclusions The Iraqi immigrant population often present with a strong familial burden of type 2 diabetes with the worst glycemic control and highest diabetes risk in individuals with ≥ 3 siblings and parents with diabetes. Our data show that in a population still free from diabetes familial burden in uences insulin secretion to a higher degree than insulin action and may be a logical target for intervention. 

Place, publisher, year, edition, pages
Springer Milan, 2018. Vol. 55, no 3, p. 233-242
Keywords [en]
Family history of diabetes, Insulin action, Insulin secretion, Middle East, Type 2 diabetes
National Category
Endocrinology and Diabetes
Identifiers
URN: urn:nbn:se:umu:diva-146160DOI: 10.1007/s00592-017-1088-5ISI: 000426308200004PubMedID: 29274011OAI: oai:DiVA.org:umu-146160DiVA, id: diva2:1206007
Available from: 2018-05-15 Created: 2018-05-15 Last updated: 2018-06-09Bibliographically approved

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Bennet, LouiseFranks, Paul W.

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