Evidence map›Paper›PMID 26785641›Full record

Observational studyBiological trace element research2016

Hepcidin and Iron Metabolism in Pregnancy: Correlation with Smoking and Birth Weight and Length.

Magdalena Chełchowska, Jadwiga Ambroszkiewicz, Joanna Gajewska, Ewa Jabłońska-Głąb, Tomasz M Maciejewski, Mariusz Ołtarzewski

Open access · hybridAbstract readObservational Study
In one paragraph

Observational study in Biological trace element research, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
12citing papers in PubMed, 1 pooled it
1.6field-weighted citation impact, top 16% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

12 citing papers in PubMed, 1 synthesis or guideline pooled it, 21 citations in OpenAlex.

  1. Pooled it
  2. Observational
  3. Anemia levels in the preconception period and the first trimester of pregnancy: a national, multicentric and cross-sectional study.Revista brasileira de ginecologia e obstetricia : revista da Federacao Brasileira das Sociedades de Ginecologia e Obstetricia · 2025
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  4. Review
  5. Article
  6. Article
  7. Article
  8. Article
  9. Observational
  10. Article
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

6 authors at 1 institution in 2 countries.

Magdalena ChełchowskaScreening Department, Institute of Mother and Child, Kasprzaka 17a, 01-211, Warsaw, Poland. magdalena.chelchowska@imid.med.pl.
Jadwiga AmbroszkiewiczScreening Department, Institute of Mother and Child, Kasprzaka 17a, 01-211, Warsaw, Poland.
Joanna GajewskaScreening Department, Institute of Mother and Child, Kasprzaka 17a, 01-211, Warsaw, Poland.
Ewa Jabłońska-GłąbScreening Department, Institute of Mother and Child, Kasprzaka 17a, 01-211, Warsaw, Poland.
Tomasz M MaciejewskiDepartment of Obstetrics and Gynecology, Institute of Mother and Child, Kasprzaka 17a, 01-211, Warsaw, Poland.
Mariusz OłtarzewskiScreening Department, Institute of Mother and Child, Kasprzaka 17a, 01-211, Warsaw, Poland.
Mother and Child Foundation · GB

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

To estimate the effect of tobacco smoking on iron homeostasis and the possible association between hepcidin and the neonatal birth weight and length, concentrations of serum hepcidin and selected iron markers were measured in 81 healthy pregnant women (41 smokers and 40 nonsmokers). The smoking mothers had significantly lower concentrations of serum hepcidin (p < 0.001), iron (p < 0.001), and hemoglobin (p < 0.05), but higher erythropoietin (p < 0.05) levels compared with non-smoking pregnant women. Logistic regression analysis showed the highest negative impact of the number of cigarettes smoked per day (β = -0.46; p < 0.01) and positive impact of ferritin level (β = 0.47; p < 0.001) on serum hepcidin concentration. The birth weight and the body length of smoking mothers' infants were significantly lower than in tobacco abstinent group (p < 0.001). In multiple regression analysis, birth body weight (β = 0.56; p < 0.001) and length (β = 0.50; p < 0.001) were significantly related to maternal hepcidin values. Tobacco smoking affected hepcidin level in serum of pregnant women in a dose-dependent manner. Low concentrations of iron and hemoglobin in maternal serum coexisting with high level of erythropoietin suggest that smoking could lead to subclinical iron deficiency and chronic hypoxia not only in mothers but also in fetus. Low serum hepcidin concentration in smoking pregnant women might be associated with lower fetal birth weight and length.

Indexed as

Birth WeightBody HeightAdultFemaleHepcidinsHumansIronPregnancySmokingHepcidinsIronBirth body lengthBirth body weightHepcidinPregnancyTobacco smoking

Identifiers

PMID26785641
PMCPMC4975765
OpenAlexW2293738630

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.