Objective: To examine the changes in serum chromogranin A (CgA) and urotensin II (U II) levels in children with chronic heart failure (CHF) and their clinical significance.
Methods: A total of 58 children with CHF, among whom 17 had endocardial fibroelastosis (EFE) and 41 had dilated cardiomyopathy (DCM), were selected as CHF group, and 20 healthy children were selected as control group. Serum levels of CgA and U II were measured using enzyme-linked immunosorbent assay, and the level of N-terminal pro-brain natriuretic peptide (NT-proBNP) was determined by bi-directional lateral flow immunoassay. Ventricular remodeling indices were measured using echocardiography. The correlation between serum CgA and U II levels and ventricular remodeling was evaluated by Pearson correlation or Spearman's rank correlation analysis.
Results: There were no significant differences in serum CgA and NT-proBNP levels between children with grade II heart function and the control group (P>0.05). However, the serum CgA and NT-proBNP levels gradually increased as the heart function grade increased, and were significantly higher in grade III and IV children compared to those in the control group (P<0.05). U II levels were lower in children with grade II, III, or IV heart function than those in the control group (P<0.05), and significantly decreased with the aggravation of CHF (P<0.05). There were no significant differences in CgA and U II levels between patients with EFE and DCM (P>0.05). Serum CgA concentration was positively correlated with left ventricular mass index (LVMI), NT-proBNP, and cardiac function classification (r=0.279, 0.649, and 0.778 respectively; P<0.05), but was negatively correlated with left ventricular ejection fraction (LVEF), left ventricular fractional shortening (LVFS), and U II (r=-0.369, -0.322, and -0.718 respectively; P<0.05). Serum U II concentration was negatively correlated with NT-proBNP and cardiac function classification (r=-0.472 and -0.591 respectively; P<0.05), but was not correlated with LVMI, LVEF, and LVFS (P>0.05).
Conclusions: CgA may play a role in ventricular remodeling in children with CHF. Serum CgA and U II may serve as a reference for the diagnosis and functional classification of heart failure.
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| http://dx.doi.org/10.7499/j.issn.1008-8830.2017.03.012 | DOI Listing |
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