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Erschienen in: Pediatric Nephrology 2/2024

19.08.2023 | Original Article

Immune urinary biomarkers predict infant cardiac surgery-associated acute kidney injury

verfasst von: Daniella Levy Erez, Shah Lokesh, Kathryn D. Howarth, Sherin Meloni, Lance Ballester, Benjamin Laskin, Kathleen E. Sullivan, Joshua Blinder

Erschienen in: Pediatric Nephrology | Ausgabe 2/2024

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Abstract

Background

Acute kidney injury (AKI) occurs frequently after infant cardiac surgery and is associated with poor outcomes, including mortality and prolonged length of stay. AKI mechanisms are poorly understood, limiting therapeutic targets. Emerging data implicates dysregulated immune activation in post-cardiac surgery AKI development. We sought to identify immune-mediated AKI biomarkers after infant cardiopulmonary bypass (CPB)-assisted cardiac surgery.

Methods

A single-center prospective study of 126 infants less than 1 year old undergoing CPB-assisted surgery enrolled between 10/2017 and 6/2019. Urine samples were collected before CPB and at 6, 24, 48, and 72 h after surgery. Immune-mediated biomarkers were measured using commercial ELISA and Luminex™ multiplex kits. Based on subject age, neonatal KDIGO (< 1 month) or KDIGO criteria defined AKI. The Kruskal–Wallis rank test determined the relationship between urinary biomarker measurements and AKI.

Results

A total of 35 infants (27%) developed AKI. AKI subjects were younger, underwent more complex surgery, and had longer CPB time. Subjects with AKI vs. those without AKI had higher median urinary chemokine 10 (C-X-C motif) ligand levels at 24, 48, and 72 h, respectively: 14.3 pg/ml vs. 5.3 pg/ml, 3.4 pg/ml vs. 0.8 pg/ml, and 1.15 pg/ml vs. 0.22 pg/ml (p < 0.05) post-CPB. At 6 h post-CPB, median vascular cell adhesion protein 1 (VCAM) levels (pg/mL) were higher among AKI subjects (491 pg/ml vs. 0 pg/ml, p = 0.04).

Conclusions

Urinary CXCL10 and VCAM are promising pro-inflammatory biomarkers for early AKI detection and may indicate eventual AKI therapeutic targets.

Graphical abstract

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Metadaten
Titel
Immune urinary biomarkers predict infant cardiac surgery-associated acute kidney injury
verfasst von
Daniella Levy Erez
Shah Lokesh
Kathryn D. Howarth
Sherin Meloni
Lance Ballester
Benjamin Laskin
Kathleen E. Sullivan
Joshua Blinder
Publikationsdatum
19.08.2023
Verlag
Springer Berlin Heidelberg
Erschienen in
Pediatric Nephrology / Ausgabe 2/2024
Print ISSN: 0931-041X
Elektronische ISSN: 1432-198X
DOI
https://doi.org/10.1007/s00467-023-06051-4

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