lunes, 14 de diciembre de 2015

Effects of mitochondrial haplogroup N9a on type 2 diabetes mellitus and its associated complications. - PubMed - NCBI

Effects of mitochondrial haplogroup N9a on type 2 diabetes mellitus and its associated complications. - PubMed - NCBI



 2015 Nov;10(5):1918-1924. Epub 2015 Sep 17.

Effects of mitochondrial haplogroup N9a on type 2 diabetes mellitus and its associated complications.

Niu Q1Zhang W1Wang H1Guan X1Lu J1Li W1.

Abstract

A case-control study was conducted with the aim of identifying the predominant haplogroups associated with type 2 diabetes mellitus (T2DM) and its complications. In addition, the role of N9a in T2DM risk and complications was analyzed. Sequencing of the entire mitochondrial DNA was conducted in 235 patients and 244 controls in cohort 1, and six haplogroups (F, B4, D4, D5, M8a and N9a) associated with T2DM were classified. The frequency of N9a was further determined in cohort 2 (440 patients and 244 controls) and examined in two combined cohorts, including 675 patients with T2DM and 649 non-diabetic controls. Multivariate logistic regression analysis and association analysis were performed to investigate the association between genotypes, T2DM and diabetic nephropathy. M8a [P=0.011; odds ratio (OR), 3.49; 95% confidence interval (CI), 1.26-9.69] and haplogroup N9a (P=0.023; OR, 2.60; 95% CI, 1.11-6.05) were associated with an increased risk of T2DM. The frequency of N9a was higher in T2DM patients compared with that in the controls (6.2% vs. 4.3%) and associated with a mild risk (P=0.10; OR, 1.51; 95% CI, 0.92-2.49). N9a was significantly associated with an increased risk of diabetic nephropathy (P=0.024; OR, 2.15; 95% CI, 1.11-4.19). Previous findings of N9a being protective against T2DM were not replicated in the present study, although this haplogroup was associated with an increased risk of diabetic nephropathy.

KEYWORDS:

M8a; N9a; diabetic nephropathy; mitochondrial genome; type 2 diabetes mellitus

PMID:
 
26640573
 
[PubMed] 
PMCID:
 
PMC4665168
 
Free PMC Article

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