Journal
JOURNAL OF CLINICAL MEDICINE
Volume 12, Issue 18, Pages -Publisher
MDPI
DOI: 10.3390/jcm12185894
Keywords
pregnancy zone protein; cardiovascular disease; chronic kidney disease; ambulatory blood pressure monitoring; children; congenital anomalies in the kidney and urinary tract (CAKUT); hypertension
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Cardiovascular disease is a major cause of mortality and morbidity in children with chronic kidney disease (CKD). The causes of pediatric CKD differ from adults, with congenital anomalies in the kidney and urinary tract being the leading causes in childhood. This study identified pregnancy zone protein (PZP) as a potential marker for cardiovascular risk in CKD children and found associations between PZP and arterial stiffness, blood pressure abnormalities, and nitric oxide levels.
Cardiovascular disease (CVD) is a significant cause of mortality and morbidity among children with chronic kidney disease (CKD). The causes of pediatric CKD differ from those in adults, as congenital anomalies in the kidney and urinary tract (CAKUT) are the leading causes in childhood. Identifying ideal markers of CVD risk early is crucial for CKD children to improve their care. Previously, we screened differentially expressed proteins in CKD children with or without blood pressure (BP) abnormalities and identified pregnancy zone protein (PZP). In 106 children and adolescents with CKD stages G1-G4, we analyzed plasma PZP concentration. The associations between PZP and ambulatory BP monitoring (ABPM) profile, parameters of cardiac and carotid ultrasounds, indices of arterial stiffness, and nitric oxide (NO) parameters were determined. We observed that PZP positively correlated with arterial stiffness indices, beta index, and pulse wave velocity in CAKUT. CKD children with abnormalities in ABPM and night dipping displayed a higher PZP concentration than those without. Additionally, the PZP level was positively correlated with NO bioavailability. In conclusion, our results suggest PZP has differential influences on cardiovascular risk in CAKUT and non-CAKUT children. Identification of this relationship is novel in the pediatric CKD literature.
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