Serum zinc level and coronary heart disease events in patients with type 2 diabetes

Diabetes Care. 2007 Mar;30(3):523-8. doi: 10.2337/dc06-1682.

Abstract

Objective: Low serum zinc level may predispose nondiabetic subjects to cardiovascular diseases. Our aim was to investigate whether serum zinc level predicts coronary heart disease (CHD) events in subjects with type 2 diabetes

Research design and methods: The original study population consisted of 1,059 patients with type 2 diabetes, aged 45-64 years. Mean duration of diabetes was 8 years. Serum zinc values were available from 1,050 subjects. CHD mortality and the incidence of nonfatal myocardial infarction (MI) were assessed in a 7-year follow-up.

Results: During the follow-up, 156 patients died from CHD and 254 patients had a fatal or nonfatal MI. Patients with serum zinc concentration < or = 14.1 micromol/l at baseline had a higher risk for death from CHD than patients with serum zinc level > 14.1 micromol/l (20.8 and 12.8%, respectively; P = 0.001) The risks for fatal or nonfatal MI were 30.5 and 22.0%, respectively (P = 0.005). In Cox regression analyses, low serum zinc concentration was significantly associated with CHD mortality (relative risk [RR] 1.7, P = 0.002) and all CHD events (RR 1.37, P = 0.030), even after adjustment for confounding variables.

Conclusions: In this large cohort of type 2 diabetic patients, low serum zinc level was an independent risk factor for CHD events.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Age of Onset
  • Body Mass Index
  • Coronary Disease / blood*
  • Coronary Disease / epidemiology*
  • Coronary Disease / mortality
  • Diabetes Mellitus, Type 2 / blood*
  • Diabetes Mellitus, Type 2 / complications
  • Diabetic Angiopathies / blood
  • Diabetic Angiopathies / epidemiology*
  • Female
  • Finland / epidemiology
  • Glomerular Filtration Rate
  • Glycated Hemoglobin A / analysis
  • Humans
  • Male
  • Middle Aged
  • Myocardial Infarction / blood
  • Myocardial Infarction / epidemiology*
  • Zinc / blood*

Substances

  • Glycated Hemoglobin A
  • Zinc