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Clin Lab. 2017 Feb 1;63(2):327-333. doi: 10.7754/Clin.Lab.2016.160609.

The Circulating Levels of Complement-C1q/TNF-Related Protein 13 (CTRP13) in Patients with Type 2 Diabetes and its Association with Insulin Resistance.

Abstract

BACKGROUND:

Complement-C1q/TNF-related protein 13 (CTRP13) is a novel adipokine involved in the regulation of energy metabolism. Here, we sought to evaluate serum levels of CTRP13 and adiponectin in patients with type 2 diabetes (T2D) (n = 40) and healthy subjects (n = 40) and also to study the association of CTRP13 levels with diabetes-related indices.

METHODS:

Circulating levels of CTRP13 and adiponectin were measured by enzyme-linked immunosorbent assay (ELISA) in T2D patients (n = 40) and in an age and gender-matched control group (n = 40). The anthropometric assessment and biochemical evaluation were done in all subjects.

RESULTS:

Circulating levels of CTRP13 and adiponectin were significantly lower in T2D patients in comparison with controls ( = 0.025 and p < 0.001, respectively). CTRP13 was inversely correlated with fasting blood sugar (Spearman's  = -0.420, p < 0.001), HbA1C (Spearman's  = -0.554, p < 0.001), and HOMA-IR (Spearman's  = -0.403, p < 0.001). ROC curve analysis showed that CTRP13 might be used as a biomarker for differentiating T2D patients from healthy individuals (area under the curve with 95% confidence intervals = 0.841, 0.752 - 0.929). A CTRP13 level equal to or lower than 0.885 ng/mL was found to be the optimal cutoff (sensitivity = 92.5%, specificity = 70%, Youden Index = 0.625) for differentiating T2D patients from healthy individuals.

CONCLUSIONS:

It appears that CTRP13 is a novel adipokine associated with T2D in humans as its serum level was significantly lower in T2D patients and also was inversely correlated with insulin resistance and FBS in humans.

PMID:
28182339
DOI:
10.7754/Clin.Lab.2016.160609
[Indexed for MEDLINE]

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