eISSN: 1644-4124
ISSN: 1426-3912
Central European Journal of Immunology
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1/2022
vol. 47
 
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abstract:
Clinical immunology

Serum and urine periostin and cytokeratin-18 in children with congenital obstructive nephropathy

Agnieszka Turczyn
1
,
Grażyna Krzemień
1
,
Elżbieta Górska
2
,
Urszula Demkow
2
,
Małgorzata Pańczyk-Tomaszewska
1

  1. Department of Pediatrics and Nephrology, Medical University of Warsaw, Warsaw, Poland
  2. Department of Laboratory Diagnostics and Clinical Immunology of Developmental Age, Medical University of Warsaw, Warsaw, Poland
Cent Eur J Immunol 2022; 47 (1): 63-72
DOI: https://doi.org/10.5114/ceji.2022.115687
Online publish date: 2022/05/10
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Congenital obstructive nephropathy (CON) is one of the most common causes of chronic kidney disease in children. The aim of the study was to investigate serum and urine periostin and cytokeratin-18 (CK-18) in children with CON in relation to CON etiology, treatment, and kidney injury. We evaluated 81 children with CON secondary to ureteropelvic junction obstruction (UPJO), ureterovesical junction obstruction (UVJO), posterior urethral valves (PUV) and 60 controls. Neither biomarker demonstrated any relation to CON etiology. However, all patients showed significantly higher urine periostin (uPeriostin) and uPeriostin/Cr levels than the controls. Also, UVJO patients showed higher sCK-18 and uCK-18/Cr levels, and PUV patients showed higher uCK-18/Cr levels than the controls. Neither biomarker was found to have any relation to CON treatment. However, conservatively treated children and those before and after surgery showed significantly higher uPeriostin and uPeriostin/Cr levels than the controls. uPeriostin strongly correlated with differential renal function (DRF) < 40%. The ROC analysis demonstrated the best area under the curve (AUC) for uPeriostin (0.831) and uPeriostin/Cr (0.768), and low for sPeriostin (0.656) and uCK-18 (0.615) for detecting renal injury. In conclusion, although serum and urine periostin and CK-18 did not display any relation to etiology or the type of CON treatment, uPeriostin seems to be a useful tool for detecting renal injury in children with CON, especially due to its strong negative correlation with DRF < 40%.
keywords:

children, periostin, cytokeratin-18, congenital obstructive nephropathy
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