Predictors of serum ferritin and serum soluble transferrin receptor in newborns and their associations with iron status during the first two years of life

G Hay, H Refsum, A Whitelaw, EL Melbye, E Haugh, B Borch-Iohnsen

Research output: Contribution to journalArticle (Academic Journal)peer-review

51 Citations (Scopus)

Abstract

Background: Adequate iron status at birth may prevent iron deficiency in early childhood. Objectives: We aimed to identify predictors of serum ferritin (SF) and serum soluble transferrin receptor (sTfR) in healthy newborns and to relate these iron indexes to iron status in the first 2 y of life. Design: Using bivariate correlations and linear regression, we related various factors in pregnancy to SF (n = 363) and sTfR (n = 350) in healthy, term infants. Measurements of cord SF and sTfR were compared with those of SF and sTfR at 6, 12, and 24 mo. All 4 measurements were available for 191 and 169 infants for SF and sTfR, respectively. Results: Geometric mean (and 95% CI) cord SF and sTfR measurements were 159 (148, 171) {micro}g/L and 7.3 (7.0, 7.6) mg/L, respectively. Cord SF correlated with sTfR ({rho} = -0.21, P <0.001). In regression analysis, cord SF correlated with smoking and the use of iron supplements during pregnancy (partial r = -0.12 and 0.16; P <0.05 for both). Cord sTfR was associated with first trimester BMI, gestational age, and male sex (partial r = 0.30, 0.24, and 0.19, respectively; P <0.01 for all). Cord SF correlated with SF at 6, 12, and 24 mo ({rho} = 0.45, 0.31, and 0.16 respectively; P <0.05 for all). At age 6 mo, 16 of 17 infants with SF
Translated title of the contributionPredictors of serum ferritin and serum soluble transferrin receptor in newborns and their associations with iron status during the first two years of life
Original languageEnglish
Pages (from-to)64 - 73
Number of pages10
JournalAmerican Journal of Clinical Nutrition
Volume86 (1)
Publication statusPublished - Jul 2007

Bibliographical note

Publisher: American Society for Clinical Nutrition

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