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Diabetes Res Clin Pract. 2007 Jul;77(1):151-4. Epub 2006 Nov 1.

A novel index of insulin resistance determined from the homeostasis model assessment index and adiponectin levels in Japanese subjects.

Author information

  • 1Department of Internal Medicine and Therapeutics, Osaka University Graduate School of Medicine, Osaka, 2-2 Yamadaoka, Suita City, Japan. matuhisa@medone.med.osaka-u.ac.jp

Erratum in

  • Diabetes Res Clin Pract. 2007 Sep;77(3):496. Ueda, Shinichiro [added].

Abstract

Insulin resistance is the principal cause of glucose intolerance and type 2 diabetes and induces progression of severe atherosclerosis in these patients. Adiponectin, the adipose-specific proteins, is known to correlate negatively with insulin resistance in patients with obesity and type 2 diabetes. The purpose of this study was to evaluate the potential of using serum adiponectin levels as a marker of insulin resistance in various states of insulin resistance. Furthermore, we attempted to establish a modified index of the homeostasis model assessment index (HOMA-IR), calculated from the product of serum insulin and plasma glucose levels divided by serum adiponectin levels (HOMA-AD). We recruited 117 Japanese subjects with various degrees of glucose tolerance and determined serum adiponectin levels and insulin sensitivity (M-value) by using the euglycemic hyperinsulinemic clamp technique. M-value, the gold standard index of insulin resistance, correlates significantly and independently with fasting insulin (r=-0.313, P<0.001), glucose (r=-0.319, P<0.001), and adiponectin (r=0.241, P<0.002) levels. M-values were more significantly correlated with HOMA-AD (r=-0.643, P<0.001) than HOMA-IR values (r=-0.591, P<0.001). In subjects with moderate hyperglycemia (fasting glucose levels>8.0mmol/L, n=30), HOMA-AD showed a more significant correlation with the M-value than HOMA-IR (r=-0.535, P=0.005 versus r=-0.461, P=0.010). We would therefore like to propose a novel index, HOMA-AD, as a simple and adequate index for determining insulin resistance even in diabetic patients with overt hyperglycemia.

PMID:
17081646
[PubMed - indexed for MEDLINE]
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