Evidence map›Paper›PMID 27257506›Full record

ArticleBMC obesity2016

Maternal obesity (Class I-III), gestational weight gain and maternal leptin levels during and after pregnancy: a prospective cohort study.

Sara Carlhäll, Marie Bladh, Jan Brynhildsen, Ing-Marie Claesson, Ann Josefsson, Gunilla Sydsjö, Annika Thorsell, Marie Blomberg

Open access · hybridAbstract read
In one paragraph

Article in BMC obesity, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
9citing papers in PubMed, 1 pooled it
1.5field-weighted citation impact, top 20% 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

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

  1. Obesity and asthma during pregnancy: a systematic review and meta-analysis.European respiratory review : an official journal of the European Respiratory Society · 2025
    Pooled it
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  6. Article
  7. Article
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  9. Observational
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

8 authors at 1 institution in 1 country.

Sara CarlhällDepartment of Obstetrics and Gynaecology and Department of Clinical and Experimental Medicine, Linköping University, 58185 Linköping, Sweden.
Marie BladhDepartment of Obstetrics and Gynaecology and Department of Clinical and Experimental Medicine, Linköping University, 58185 Linköping, Sweden.
Jan BrynhildsenDepartment of Obstetrics and Gynaecology and Department of Clinical and Experimental Medicine, Linköping University, 58185 Linköping, Sweden.
Ing-Marie ClaessonDepartment of Obstetrics and Gynaecology and Department of Clinical and Experimental Medicine, Linköping University, 58185 Linköping, Sweden.
Ann JosefssonDepartment of Obstetrics and Gynaecology and Department of Clinical and Experimental Medicine, Linköping University, 58185 Linköping, Sweden.
Gunilla SydsjöDepartment of Obstetrics and Gynaecology and Department of Clinical and Experimental Medicine, Linköping University, 58185 Linköping, Sweden.
Annika ThorsellDivision of Cell Biology, Department of Clinical and Experimental Medicine, Faculty of Health Sciences, Linköping University, 58185 Linköping, Sweden.
Marie BlombergDepartment of Obstetrics and Gynaecology and Department of Clinical and Experimental Medicine, Linköping University, 58185 Linköping, Sweden.
Linköping University · SE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundMaternal obesity is accompanied by maternal and fetal complications during and after pregnancy. The risks seem to increase with degree of obesity. Leptin has been suggested to play a role in the development of obesity related complications. Whether maternal leptin levels differ between obese and morbidly obese women, during and after pregnancy, have to our knowledge not been previously described. Neither has the association between maternal leptin levels and gestational weight gain in obese women. The aim was to evaluate if maternal plasma leptin levels were associated with different degrees of maternal obesity and gestational weight gain.

methodsProspective cohort study including women categorized as obesity class I-III (n = 343) and divided into three gestational weight gain groups (n = 304). Maternal plasma leptin was measured at gestational week 15, 29 and 10 weeks postpartum. Maternal Body Mass Index (BMI) was calculated from early pregnancy weight. Gestational weight gain was calculated using maternal weight in delivery week minus early pregnancy weight. The mean value and confidence interval of plasma-leptin were analysed with a two-way ANOVA model. Interaction effect between BMI and gestational weight gain group was tested with a two-way ANOVA model.

resultsThe mean maternal leptin concentrations were significantly higher in women with obesity class III compared to women in obesity class I, at all times when plasma leptin were measured. The mean leptin concentrations were also significantly higher in women with obesity class II compared to women in obesity class I, except in gestational week 29. There was no difference in mean levels of plasma leptin between the gestational weight gain groups. No significant interaction between BMI and gestational weight gain group was found.

conclusionsPlasma leptin levels during and after pregnancy were associated with obesity class but not with degree of gestational weight gain. These results are in concordance with epidemiological findings where the risk of obstetric complications increases with increased maternal obesity class. The effect on obstetric outcome by degree of gestational weight gain is less pronounced than the adverse effects associated with maternal obesity.

Indexed as

Gestational weight gainLeptinMaternal obesityPregnancy and body mass index

Identifiers

PMID27257506
PMCPMC4875677
OpenAlexW2408521559

What OpenQuestion holds

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LicenceCC BY
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Registered trials

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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.