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Published in: Acta Diabetologica 5/2013

01-10-2013 | Original Article

Prevalence of mitochondrial diabetes in southwestern Finland: a molecular epidemiological study

Authors: Mika H. Martikainen, Tapani Rönnemaa, Kari Majamaa

Published in: Acta Diabetologica | Issue 5/2013

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Abstract

Mitochondrial diabetes and deafness (MIDD) is a subtype of diabetes mellitus (DM) that most commonly results from the m.3243A > G mutation in mitochondrial DNA (mtDNA). Sensorineural hearing loss is a typical accompanying feature. Previous studies have suggested a prevalence of ~1–1.5 % for MIDD. We studied the molecular epidemiology of MIDD among young (aged 18–45 years) adults in a defined population in southwestern Finland. Of the identified cohort of 1,532 patients with DM, we received blood samples of 299 patients and analyzed them for the m.3243A > G mutation and for mtDNA haplogroups. We found three DM patients (1.0 %) with the m.3243A > G mutation. All the three patients with DM and m.3243A > G also had severe hearing impairment that required use of hearing aid. MtDNA haplogroup U was more prevalent among patients with maternal family history of DM. We conclude that among young adults, ~1 % of all DM is associated with the m.3243A > G mutation. We suggest that all patients with both DM and hearing impairment, at least in this age group, should undergo investigation for this mutation. Furthermore, our results suggest that mtDNA haplogroup U is associated with maternal family history of DM.
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Metadata
Title
Prevalence of mitochondrial diabetes in southwestern Finland: a molecular epidemiological study
Authors
Mika H. Martikainen
Tapani Rönnemaa
Kari Majamaa
Publication date
01-10-2013
Publisher
Springer Milan
Published in
Acta Diabetologica / Issue 5/2013
Print ISSN: 0940-5429
Electronic ISSN: 1432-5233
DOI
https://doi.org/10.1007/s00592-012-0393-2

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