Plasma levels of N-terminal pro-brain natriuretic peptide and glycogen phosphorylase isoenzyme BB in neonates with asphyxia complicated by myocardial injury

LIN Li-Xing; MAO Qing-Hua; ZHANG Zhi-Ling; AN Cai-Xia; KANG Xi-Guang

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Chinese Journal of Contemporary Pediatrics ›› 2010, Vol. 12 ›› Issue (04) : 252-255.

Plasma levels of N-terminal pro-brain natriuretic peptide and glycogen phosphorylase isoenzyme BB in neonates with asphyxia complicated by myocardial injury

LIN Li-Xing, MAO Qing-Hua, ZHANG Zhi-Ling, AN Cai-Xia, KANG Xi-Guang

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Abstract

OBJECTIVE: To investigate the changes and the clinical significance of N-terminal pro-brain natriuretic peptide (NT-proBNP) and glycogen phosphorylase isoenzyme BB (GPBB) levels in neonates with asphyxia complicated by myocardial injury. METHODS: Sixty-four neonates with asphyxia (39 mild, 25 severe) were enrolled. Of the 64 neonates, 30 had myocardial injury and 34 did not develop myocardial injury. Twenty-five healthy neonates served as a control group. Plasma levels of NT-proBNP and GPBB were measured using ELISA. Myocardial enzymes and cardiac troponin I were stimultaneously measured, and electrocardiography and chest radiographs were obtained. RESULTS: The plasma levels of NT-proBNP and GPBB in neonates with myocardial injury were significantly higher than those in neonates without myocardial injury and in the control group (P<0.01). The neonates with severe asphyxia had significantly increased plasma NT-proBNP and GPBB concentrations compared to those with mild asphyxia and the control group (P<0.01). Spearman rank correlation analysis showed that plasma NT-proBNP level was positively correlated with plasma GPBB level in neonates with asphyxia. Plasma levels of NT-proBNP and GPBB were also positively correlated with plasma levels of CK-MB, CK and LDH (P<0.01). CONCLUSIONS: Both NT-proBNP and GPBB can be used as biomarkers of myocardial injury in neonates with asphyxia .The measurement of plasma NT-proBNP and GPBB levels was useful in early identification of myocardial injury and severity evaluation in neonates with asphyxia.［Chin J Contemp Pediatr, 2010, 12 (4):252-255］

Key words

Asphyxia / Myocardial injury / NT-proBNP / Glycogen phosphorylase isoenzyme BB / Neonate

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LIN Li-Xing, MAO Qing-Hua, ZHANG Zhi-Ling, AN Cai-Xia, KANG Xi-Guang. Plasma levels of N-terminal pro-brain natriuretic peptide and glycogen phosphorylase isoenzyme BB in neonates with asphyxia complicated by myocardial injury[J]. Chinese Journal of Contemporary Pediatrics. 2010, 12(04): 252-255

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