PMID- 38389296 OWN - NLM STAT- MEDLINE DCOM- 20240226 LR - 20240229 IS - 1643-3750 (Electronic) IS - 1234-1010 (Print) IS - 1234-1010 (Linking) VI - 30 DP - 2024 Feb 23 TI - Urinary Concentration of Renal Biomarkers in Healthy Term Neonates: Gender Differences in GST-pi Excretion. PG - e942819 LID - 10.12659/MSM.942819 [doi] AB - BACKGROUND Serum creatinine, the criterion standard in assessment of renal function, is not reliable for the neonatal period because of its dependence on renal immaturity and maternal creatinine levels. Thus, it is important to study other biomarkers of renal function in neonates. The present study aimed to measure the urinary concentration of renal biomarkers: calbindin, clusterin, GST-pi (glutathione-S-transferase-alpha), KIM-1 (kidney injury molecule 1), MCP-1 (monocyte chemoattractant protein-1), and B2M (beta 2-microglobulin) in healthy term neonates. MATERIAL AND METHODS In the study, we included 80 healthy term neonates - 40 females and 40 males. We collected the neonates' urine on their first day of life. Urinary concentrations of calbindin, clusterin, KIM-1, MCP-1, and B2M were assessed using an immunoassay for kidney toxicology research. Because dilution of the urine affects the concentrations of urinary biomarkers, we normalized them to the concentration of urinary creatinine (Cr) and present them as biomarker/Cr ratios. RESULTS We obtained the following values of the assessed biomarker/Cr ratios (median [Q1-Q3]): calbindin/Cr.: 197.04 (56.25-595.17), KIM-1/Cr: 0.09 (0.04-0.18), MCP-1/Cr: 0.05 (0.02-0.14), B2M/Cr: 126.12 (19.03-342.48), GST-pi/Cr in boys: 1.28 (0.46-3.77), GST-pi/Cr in girls: 8.66 (2.51-27.82), clusterin/Cr: 4.55 (1.79-12.97) ng/mg Cr. CONCLUSIONS We showed the urinary levels of calbindin, clusterin, GST-pi, KIM-1, MCP-1, B2M in white, West Slavic, healthy term neonates. We found that in there is an association between female sex and a higher urinary GST-pi excretion, but urinary excretion of calbindin, clusterin, KIM-1, MCP-1, and B2M is sex-independent. The urinary levels of the assessed biomarkers do not depend on the method of delivery. FAU - Kamianowska, Monika AU - Kamianowska M AUID- ORCID: 0000-0002-7756-5419 AD - Department of Neonatology and Neonatal Intensive Care, Medical University of Bialystok, Bialystok, Poland. FAU - Rybi-Szuminska, Agnieszka AU - Rybi-Szuminska A AUID- ORCID: 0000-0003-1890-6997 AD - Department of Pediatrics and Nephrology, Medical University of Bialystok, Bialystok, Poland. FAU - Kamianowska, Aleksandra AU - Kamianowska A AD - Department of Pediatrics and Nephrology, Medical University of Bialystok, Bialystok, Poland. FAU - Maciejczyk, Mateusz AU - Maciejczyk M AUID- ORCID: 0000-0001-5609-3187 AD - Department of Hygiene, Epidemiology and Ergonomics, Medical University of Bialystok, Bialystok, Poland. FAU - Zubrzycka, Anna AU - Zubrzycka A AUID- ORCID: 0000-0002-5015-1865 AD - Department of Neonatology and Neonatal Intensive Care, Medical University of Bialystok, Bialystok, Poland. FAU - Nazarko, Joanna AU - Nazarko J AD - Department of Neonatology and Neonatal Intensive Care, Medical University of Bialystok, Bialystok, Poland. FAU - Wasilewska, Anna AU - Wasilewska A AUID- ORCID: 0000-0003-0257-4422 AD - Department of Pediatrics and Nephrology, Medical University of Bialystok, Bialystok, Poland. LA - eng PT - Journal Article DEP - 20240223 PL - United States TA - Med Sci Monit JT - Medical science monitor : international medical journal of experimental and clinical research JID - 9609063 RN - 0 (Clusterin) RN - AYI8EX34EU (Creatinine) RN - 0 (Biomarkers) RN - 0 (Calbindins) SB - IM MH - Male MH - Infant, Newborn MH - Humans MH - Female MH - *Clusterin MH - Creatinine MH - Sex Factors MH - *Kidney MH - Biomarkers MH - Calbindins PMC - PMC10898192 COIS- Conflict of interest: None declared EDAT- 2024/02/23 06:43 MHDA- 2024/02/26 06:45 PMCR- 2024/02/23 CRDT- 2024/02/23 01:23 PHST- 2024/02/26 06:45 [medline] PHST- 2024/02/23 06:43 [pubmed] PHST- 2024/02/23 01:23 [entrez] PHST- 2024/02/23 00:00 [pmc-release] AID - 942819 [pii] AID - 10.12659/MSM.942819 [doi] PST - epublish SO - Med Sci Monit. 2024 Feb 23;30:e942819. doi: 10.12659/MSM.942819.