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  • Title: Relationship of YKL-40 and adiponectin and subclinical atherosclerosis in asymptomatic patients with type 1 diabetes mellitus from a European Mediterranean population.
    Author: Aguilera E, Serra-Planas E, Granada ML, Pellitero S, Reverter JL, Alonso N, Soldevila B, Mauricio D, Puig-Domingo M.
    Journal: Cardiovasc Diabetol; 2015 Sep 18; 14():121. PubMed ID: 26382922.
    Abstract:
    BACKGROUND: The glycoprotein YKL-40 is a new marker of early inflammation and endothelial dysfunction. Adiponectin is a collagen-like protein with anti-atherogenic and anti-inflammatory effects. Increased concentrations of both markers have been reported in patients with type 1 diabetes (T1D). AIM: To assess the possible role of YKL-40 and adiponectin as a marker of subclinical cardiovascular disease in asymptomatic patients with type 1 diabetes with no history of ischemic or macrovascular heart disease and its relationship with other classic inflammatory biomarkers. METHODS: Concentrations of YKL-40, adiponectin, IL-6, IL-1β, TNF-α, hsCRP and homocysteine were determined in 150 T1D patients (58% men, age: 38.6 ± 8.1 years, 20.4 ± 8.1 years of evolution, BMI: 25.1 ± 3.6 kg/m(2); HbA1c 8.1 ± 2.3%, 4% smokers; 26% retinopathy, microalbuminuria 9%) and 50 controls age, sex and smoke condition matched. Subclinical atherosclerosis was assessed by a carotid ultrasonography and a computed tomography for evaluation of calcium artery calcification score (CACS). RESULTS: 82% of T1D patients and 92% of controls had a calcium score of 0. T1D patients showed a significantly higher mean common carotid artery intima media thickness (CIMT) compared to controls (0.55 ± 0.14 vs 0.48 ± 0.14 mm, p = 0.01). Concentrations of YKL-40 and adiponectin were significantly higher in T1D [42.6 (10.4-195.0) vs ±28.7 (11.0-51.2) ng/ml, p = 0.001 and 15.8 ± 9.1 vs. 12.4 ± 5.3 mg/ml, p = 0.008], with no differences when compared to other inflammatory parameters. In T1D patients no association was found between YKL-40 and adiponectin and screening test for subclinical arterial disease (neither CACS nor CIMT). A positive correlation was found between levels of YKL-40 and age and duration of disease (r = 0.28, p = 0.003; r = 0.35, p = 0.001). There were no differences in the YKL-40 in relation to the presence or absence of retinopathy or nephropathy. Levels of adiponectin were higher in patients with nephropathy (21.84 ± 8.15 vs. 14.88 ± 8.27 mg/ml, p = 0.008). CONCLUSIONS: Type 1 diabetes patients from a Mediterranean area with a longer disease evolution, although a lower degree of subclinical disease, showed significatively higher concentrations of YKL-40 and adiponectin compared with the controls. Therefore, we conclude that YKL-40 and adiponectin are early inflammatory markers in diabetic subjects even in the presence of a low atherosclerotic background.
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