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Association of serum YKL-40 levels with urinary albumin excretion rate in young Japanese patients with type 1 diabetes mellitus.

Endocr J. 2012 Sep 15;

Authors: Sakamoto F, Katakami N, Kaneto H, Yasuda T, Takahara M, Miyashita K, Kuroda A, Matsuhisa M, Kosugi K, Shimomura I


YKL-40 is a marker of inflammation and endothelial dysfunction, both of which play important roles in the progression of diabetic complications. However, little information has been obtained about serum YKL-40 levels in type 1 diabetic patients. We evaluated YKL-40 levels and its association with diabetic micro- and macroandgiopathy in 131 young Japanese type 1 diabetic patients without advanced diabetic complications (aged 24.7±5.9 years) and 97 age- and gender-matched healthy controls. YKL-40 levels were significantly elevated in type 1 diabetic patients than in healthy controls (median (range) 46.4 (20.3-136.7) and 52.3 (21.4-274.1) ng/ml, respectively, p = 0.006). There was a significant positive association between YKL-40 levels and urinary albumin creatinine ratio (UACR) (r = 0.226, p = 0.013). Furthermore, a multivariate regression analysis demonstrated that YKL-40 levels were a determinant of UACR independently of conventional risk factors. In addition, YKL-40 levels were significantly higher in participants with diabetic retinopathy compared to those without it (median (range) 55.5 (23.3-274.1) and 50.3 (21.4-237.4) ng/ml, respectively, p = 0.039). Serum YKL-40 levels were elevated in type 1 diabetic patients and associated with increasing level of albuminuria. YKL-40 could be a predictor to assess the risk of diabetic microangiopathy in the early stage in type 1 diabetic patients.

PMID: 22986489 [PubMed - as supplied by publisher]