Increased plasma adiponectin concentrations are associated with microangiopathy in type 1 diabetic subjects

Diabetologia. 2005 Jun;48(6):1088-92. doi: 10.1007/s00125-005-1747-x. Epub 2005 May 5.

Abstract

Aims/hypothesis: Insulin resistance is related to an increased risk of diabetic retinopathy and nephropathy in type 1 diabetes. Patients with insulin resistance and/or macrovascular disease have abnormally low levels of adiponectin. The aim of this study was to investigate the relationships between adiponectin and renal and retinal diabetic complications in type 1 diabetic patients.

Methods: In this 6-year prospective follow-up observational study, we evaluated the severity of retinopathy at baseline and determined the incident risk of microalbuminuria in 126 normoalbuminuric patients with type 1 diabetes. Each patient was age- and sex-matched to two non-diabetic control subjects.

Results: Plasma adiponectin concentrations were significantly higher in diabetic subjects than in control subjects (p < 0.0001). The adiponectin concentration was significantly higher in patients with severe diabetic retinopathy than in those without (39.1+/-14.0 vs 29.0+/-13.0 microg/ml, p = 0.0005). The 18 patients who developed persistent microalbuminuria had higher adiponectin concentrations than the other patients (35.8+/-14.5 vs 30.6+/-13.7 microg/ml). Increased adiponectin concentrations were independently associated with the occurrence of microalbuminuria (p = 0.0158) after adjustment for baseline urinary albumin concentration (p = 0.004), sex (p = 0.0054), blood pressure (NS) and metabolic control (NS).

Conclusions/interpretation: The elevated adiponectin concentrations observed in subjects with microvascular disease may indicate an altered regulation of this adipocytokine in patients with complications associated with type 1 diabetes.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Adiponectin
  • Adult
  • Albuminuria / blood
  • Biomarkers / blood
  • Blood Pressure
  • Creatinine / blood
  • Diabetes Mellitus, Type 1 / blood*
  • Diabetic Angiopathies / blood*
  • Diabetic Retinopathy / blood*
  • Female
  • Follow-Up Studies
  • Humans
  • Intercellular Signaling Peptides and Proteins / blood*
  • Male
  • Middle Aged
  • Reference Values
  • Time Factors

Substances

  • Adiponectin
  • Biomarkers
  • Intercellular Signaling Peptides and Proteins
  • Creatinine