Document Detail


Serum prohepcidin concentrations at birth and 1 month after birth in premature infants.
MedLine Citation:
PMID:  20830780     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
BACKGROUND: Premature newborns are vulnerable to iron imbalance, although the iron homeostasis during the perinatal period remains unclear. To clarify the iron metabolism of premature infants, we measured serum prohepcidin concentrations of preterm infants, and analyzed the association with iron parameters.
METHODS: Seventy-one (61 preterm and 10 term) infants were enrolled for the study, that had no underlying diseases including asphyxia, bleedings, infection, and anomalies. Serum concentrations of prohepcidin at birth and 1 month after birth were determined by enzyme-linked immunosorbent assay.
RESULTS: Prohepcidin levels at birth but not 1 month postnatal age positively correlated with gestational age (correlation coefficient [CC]:0.334, P = 0.005) and birth weight (CC: 0.367, P = 0.002). The levels at birth of preterm infants (median: 29.93 ng/ml, range: 4.0-110.6) were lower than those of full-term infants, and increased thereafter. On the other hand, the levels in small-for-gestational age infants were not associated with gestational age or birth weight. Prohepcidin levels at birth correlated positively with red cell counts (CC = 0.487, P = 0.025), unsaturated iron binding capacity (CC = 0.755, P = 0.001), total protein (CC = 0.624, P = 0.005), and serum albumin levels (CC = 0.500, P = 0.025), and negatively with serum iron levels (CC = -0.688, P = 0.003), but not ferritin levels. Multivariate analyses indicated that prohepcidin levels at birth were lower in infants with pregnancy-induced hypertension (P = 0.03) or premature rupture of membrane (P = 0.01).
CONCLUSIONS: Prohepcidin production was physiologically low at birth of preterm infants according to the gestational age, and the levels might be susceptible to the in utero stress. The postnatal increase might reflect the maturation and/or adaptation of iron homeostasis.
Authors:
Junko Kitajima; Shouichi Ohga; Tadamune Kinjo; Masayuki Ochiai; Yasushi Takahata; Satoshi Honjo; Toshiro Hara
Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2010-09-09
Journal Detail:
Title:  Pediatric blood & cancer     Volume:  56     ISSN:  1545-5017     ISO Abbreviation:  Pediatr Blood Cancer     Publication Date:  2011 Feb 
Date Detail:
Created Date:  2010-12-15     Completed Date:  2011-01-21     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101186624     Medline TA:  Pediatr Blood Cancer     Country:  United States    
Other Details:
Languages:  eng     Pagination:  267-72     Citation Subset:  IM    
Copyright Information:
Copyright © 2010 Wiley-Liss, Inc.
Affiliation:
Department of Pediatrics, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan.
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MeSH Terms
Descriptor/Qualifier:
Antimicrobial Cationic Peptides / blood*
Enzyme-Linked Immunosorbent Assay
Erythrocyte Count
Female
Ferritins / blood
Gestational Age
Humans
Infant, Newborn
Infant, Premature / blood*
Iron / blood
Male
Protein Precursors / blood*
Serum Albumin
Chemical
Reg. No./Substance:
0/Antimicrobial Cationic Peptides; 0/Protein Precursors; 0/Serum Albumin; 0/prohepcidin; 7439-89-6/Iron; 9007-73-2/Ferritins

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