A short leucocyte telomere length is associated with development of insulin resistance

Abstract : AIMS/HYPOTHESIS: A number of studies have shown that leucocyte telomere length (LTL) is inversely associated with insulin resistance and type 2 diabetes mellitus. The aim of the present longitudinal cohort study, utilising a twin design, was to assess whether shorter LTL predicts insulin resistance or is a consequence thereof. METHODS: Participants were recruited between 1997 and 2000 through the population-based national Danish Twin Registry to participate in the GEMINAKAR study, a longitudinal evaluation of metabolic disorders and cardiovascular risk factors. Baseline and follow-up measurements of LTL and insulin resistance over an average of 12 years were performed in a subset of the Registry consisting of 338 (184 monozygotic and 154 dizygotic) same-sex twin pairs. RESULTS: Age at baseline examination was 37.4 ± 9.6 (mean ± SD) years. Baseline insulin resistance was not associated with age-dependent changes in LTL (attrition) over the follow-up period, whereas baseline LTL was associated with changes in insulin resistance during this period. The shorter the LTL at baseline, the more pronounced was the increase in insulin resistance over the follow-up period (p < 0.001); this effect was additive to that of BMI. The co-twin with the shorter baseline LTL displayed higher insulin resistance at follow-up than the co-twin with the longer LTL. CONCLUSIONS/INTERPRETATION: These findings suggest that individuals with short LTL are more likely to develop insulin resistance later in life. By contrast, presence of insulin resistance does not accelerate LTL attrition.
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Submitted on : Thursday, April 5, 2018 - 3:55:01 PM
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Simon Verhulst, Christine Dalgård, Carlos Labat, Jeremy Kark, Masayuki Kimura, et al.. A short leucocyte telomere length is associated with development of insulin resistance. Diabetologia, Springer Verlag, 2016, 59 (6), pp.1258 - 1265. ⟨10.1007/s00125-016-3915-6⟩. ⟨hal-01759676⟩

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