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  • Title: Urinary markers of acute kidney injury in newborns with perinatal asphyxia (.).
    Author: Oncel MY, Canpolat FE, Arayici S, Alyamac Dizdar E, Uras N, Oguz SS.
    Journal: Ren Fail; 2016 Jul; 38(6):882-8. PubMed ID: 27055689.
    Abstract:
    BACKGROUND: Acute kidney injury (AKI) affects up to 60% of severely asphyxiated neonates. The diagnosis of AKI can be and is further challenged by a lack of good biomarkers. We studied the role of novel markers for AKI, neutrophil gelatinase-associated lipocalin (NGAL), interleukin-8 (IL-18), Netrin-1 (NTN-1), and sodium hydrogen exchanger isoform 3 (NHE3) on development and early diagnosis of AKI in newborns with perinatal asphyxia (PA). METHODS: Forty-one newborns with a diagnosis of PA (15 with AKI and 26 without AKI) and 20 healthy matched controls were involved to the study. Urinary samples were obtained on postnatal days 1 and 4 for patients with PA and on postnatal day 1 for the control subjects. AKI was defined using a serum creatinine-based modification of the acute kidney injury network criteria. RESULTS: The levels of NGAL, NTN-1, NHE3, and IL-18 on the first postnatal day urine samples were higher in patients compared to controls (p < 0.001, p <0.001, p  <0.02, p  <0.001, respectively). In patients with AKI, the levels of NGAL and IL-18 were higher when compared to patients without AKI (p = 0.002, p  <0.001, respectively). The levels of NTN-1 and NHE3 were similar in both groups. For the samples obtained on postnatal day 4, only NGAL levels were significantly higher in patients with AKI (p = 0.004) compared to those without AKI. CONCLUSION: To our knowledge, this is the largest study, which evaluated the utility of urinary biomarkers in the diagnosis of AKI in newborns with PA. First day, urine NGAL and IL-18 levels have an important diagnostic power in such patients.
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