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Hepcidin, transferrin (exon 7), and hemochromatosis genotyping suggests that haplotype block analysis is the best strategy for predicting iron deficiency phenotype in women
Authors
E. Arroyo Pardo
C. Baeza Richer
+5 more
A. M. López Parra
S. Navas-Carretero
Ana M. Pérez Granados
Beatriz Sarriá
M. Pilar Vaquero
Publication date
19 February 2013
Publisher
'Elsevier BV'
Doi
Cite
Abstract
Strategies to draw associations between disease, genes and nutrients include the investigation of mutations and/or haplotypes. We studied the relationship between certain mutations in hepcidin (HAMP, exon 1, 2 and 3), transferrin (Tf, exon 7), and hemochromatosis (HFE, H63D and C282Y) genes, as well as their associations in haplotypes, and iron deficiency, with or without anemia, in young women. One hundred and sixty-two young, menstruating women were recruited. Hemoglobin (Hb [g/dL]), ferritin (Ft [μg/L]), total iron binding capacity, Tf saturation, hematocrit, and mean corpuscular volume were determined, and subjects were divided in 3 iron status groups: sufficient (Hb ≥12, Ft ≥20; n = 63), deficient (Hb ≥12, Ft <20 or Hb <12, Ft ≥20; n = 77), and deficient-anemic (Hb <12, Ft <20; n = 22). Mutations in the HAMP gene were detected by means of single strand conformational polymorphism analysis, in exon 7 of the Tf gene using DNA sequencing, whereas C282Y and H63D mutations in the HFE gene were detected using restriction enzymes. Among the iron-deficient women, 8 were G277S/L247L-heterozygous (except 1 L247L homozygote), and 1 was I7V-heterozygous for the mutation in the HAMP gene. Three iron-deficient, anemic women were G277S/L247L/H63D-heterozygous (except 1 H63D homozygote), and 1 was I7V-heterozygous. Two iron-sufficient females were G277S/L247L/H63D-heterozygous, 1 was G277S/L247L/H268H-heterozygous, and 2 were G277S/L247L-heterozygous. In conclusion, (1) the iron-deficient anemic group presented the highest proportion of subjects carrying mutations; (2) there are 3 possible haplotypes: G277S /L247L, G277S/L247L/H63D, and G277S/L247L/H268H, nonrestricted to any iron status; and (3) analysis of haplotype blocks is the best strategy to associate genes and iron deficiency. © 2007 Elsevier Inc. All rights reserved.Peer Reviewe
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Last time updated on 25/05/2016