Kendell R German1, Bryan A Comstock2, Pratik Parikh3, Dale Whittington4, Dennis E Mayock5, Patrick J Heagerty2, Timothy M Bahr6, Sandra E Juul5. 1. Department of Pediatrics, University of Washington, Seattle, WA. Electronic address: germank@uw.edu. 2. Department of Biostatistics, University of Washington, Seattle, WA. 3. Department of Pediatrics, Baylor College of Medicine, Children's Hospital of San Antonio, San Antonio, TX. 4. Department of Medicinal Chemistry, University of Washington, Seattle, WA. 5. Department of Pediatrics, University of Washington, Seattle, WA. 6. Department of Pediatrics, University of Utah, Salt Lake City, UT.
Abstract
OBJECTIVES: To evaluate whether extremely preterm infants regulate iron status via hepcidin. STUDY DESIGN: In this retrospective analysis of infants from the Preterm Epo Neuroprotection (PENUT) Trial, urine hepcidin (Uhep) normalized to creatinine (Uhep/UCr) was evaluated among infants randomized to erythropoietin (Epo) or placebo. RESULTS: The correlation (r) between Uhep/UCr and serum markers of iron status (ferritin and zinc protoporphyrin-to-heme ratio [ZnPP/H]) and iron dose was assessed. A total of 243 urine samples from 76 infants born at 24-276/7 weeks gestation were analyzed. The median Uhep/UCr concentration was 0.3, 1.3, 0.4, and 0.1 ng/mg at baseline, 2 weeks, 4 weeks, and 12 weeks, respectively, in placebo-treated infants. The median Uhep/UCr value in Epo-treated infants were not significantly different, with the exception of the value at the 2-week time point (median Uhep/UCr, 0.1 ng/mg; P < .001). A significant association was seen between Uhep/UCr and ferritin at 2 weeks (r = 0.63; P < .001) and at 4 weeks (r = 0.41; P = .01) and between Uhep/UCr and ZnPP/H at 2 weeks (r = -0.49; P = .002). CONCLUSIONS: Uhep/UCr values correlate with serum iron markers. Uhep/UCr values vary over time and are affected by treatment with Epo, suggesting that extremely preterm neonates can regulate hepcidin and therefore their iron status. Uhep is suppressed in extremely preterm neonates, particularly those treated with Epo.
OBJECTIVES: To evaluate whether extremely preterm infants regulate iron status via hepcidin. STUDY DESIGN: In this retrospective analysis of infants from the Preterm Epo Neuroprotection (PENUT) Trial, urine hepcidin (Uhep) normalized to creatinine (Uhep/UCr) was evaluated among infants randomized to erythropoietin (Epo) or placebo. RESULTS: The correlation (r) between Uhep/UCr and serum markers of iron status (ferritin and zinc protoporphyrin-to-heme ratio [ZnPP/H]) and iron dose was assessed. A total of 243 urine samples from 76 infants born at 24-276/7 weeks gestation were analyzed. The median Uhep/UCr concentration was 0.3, 1.3, 0.4, and 0.1 ng/mg at baseline, 2 weeks, 4 weeks, and 12 weeks, respectively, in placebo-treated infants. The median Uhep/UCr value in Epo-treated infants were not significantly different, with the exception of the value at the 2-week time point (median Uhep/UCr, 0.1 ng/mg; P < .001). A significant association was seen between Uhep/UCr and ferritin at 2 weeks (r = 0.63; P < .001) and at 4 weeks (r = 0.41; P = .01) and between Uhep/UCr and ZnPP/H at 2 weeks (r = -0.49; P = .002). CONCLUSIONS: Uhep/UCr values correlate with serum iron markers. Uhep/UCr values vary over time and are affected by treatment with Epo, suggesting that extremely preterm neonates can regulate hepcidin and therefore their iron status. Uhep is suppressed in extremely preterm neonates, particularly those treated with Epo.
Authors: Carlo Dani; Chiara Poggi; Elena Gozzini; Valentina Leonardi; Alice Sereni; Rosanna Abbate; Anna Maria Gori Journal: Transfusion Date: 2017-03-11 Impact factor: 3.157
Authors: Elizabeta Nemeth; Marie S Tuttle; Julie Powelson; Michael B Vaughn; Adriana Donovan; Diane McVey Ward; Tomas Ganz; Jerry Kaplan Journal: Science Date: 2004-10-28 Impact factor: 47.728
Authors: Laila Lorenz; Johanna Herbst; Corinna Engel; Andreas Peter; Harald Abele; Christian F Poets; Mark Westerman; Axel R Franz Journal: Neonatology Date: 2014-06-27 Impact factor: 4.035