Evidence map›Paper›PMID 17002791›Full record

ArticleClinical and molecular allergy : CMA2006

Mode of delivery and cord blood cytokines: a birth cohort study.

Ngoc P Ly, Begoña Ruiz-Pérez, Andrew B Onderdonk, Arthur O Tzianabos, Augusto A Litonjua, Catherine Liang, Daniel Laskey, Mary L Delaney, Andrea M DuBois, Hara Levy and 4 more

Open access · goldAbstract read
In one paragraph

Article in Clinical and molecular allergy : CMA, 2006. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 29 papers.

0numbers the graph read from it
0cells of the map it votes in
29citing papers in PubMed
2.1field-weighted citation impact, top 14% 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

29 citing papers in PubMed, 81 citations in OpenAlex.

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  13. Birth delivery mode alters perinatal cell death in the mouse brain.Proceedings of the National Academy of Sciences of the United States of America · 2018
    Article
  14. Associations between caesarean delivery and allergic outcomes: Results from the GUSTO study.Annals of allergy, asthma & immunology : official publication of the American College of Allergy, Asthma, & Immunology · 2017
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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

14 authors at 2 institutions in 1 country.

Ngoc P LyChanning Laboratory, Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, MA, USA. ngoc.ly@channing.harvard.edu
Begoña Ruiz-Pérez
Andrew B Onderdonk
Arthur O Tzianabos
Augusto A Litonjua
Catherine Liang
Daniel Laskey
Mary L Delaney
Andrea M DuBois
Hara Levy
Diane R Gold
Louise M Ryan
Scott T Weiss
Juan C Celedón
Harvard University · USBrigham and Women's Hospital · US

Funding

SYSTEMS APPROACHES TO THE EPIDEMIOLOGY, GENETICS AND GENOMICS OF LUNG DISEASEST32HL007427 · NHLBI · HARVARD UNIVERSITY (MEDICAL SCHOOL) · PI DAWN L DEMEO, Edwin K Silverman · 1985 to 2026
$13.6M
NHLBI NIH HHS T32 HL007427
6 · The paper itself

Abstract

backgroundThe mechanisms for the association between birth by cesarean section and atopy and asthma are largely unknown.

objectiveTo examine whether cesarean section results in neonatal secretion of cytokines that are associated with increased risk of atopy and/or asthma in childhood. To examine whether the association between mode of delivery and neonatal immune responses is explained by exposure to the maternal gut flora (a marker of the vaginal flora).

methodsCBMCs were isolated from 37 neonates at delivery, and secretion of IL-13, IFN-gamma, and IL-10 (at baseline and after stimulation with antigens [dust mite and cat dander allergens, phytohemagglutinin, and lipopolysaccharide]) was quantified by ELISA. Total and specific microbes were quantified in maternal stool. The relation between mode of delivery and cord blood cytokines was examined by linear regression. The relation between maternal stool microbes and cord blood cytokines was examined by Spearman's correlation coefficients.

resultsCesarean section was associated with increased levels of IL-13 and IFN-gamma. In multivariate analyses, cesarean section was associated with an increment of 79.4 pg/ml in secretion of IL-13 by CBMCs after stimulation with dust mite allergen (P < 0.001). Among children born by vaginal delivery, gram-positive anaerobes and total anaerobes in maternal stool were positively correlated with levels of IL-10, and gram-negative aerobic bacteria in maternal stool were negatively correlated with levels of IL-13 and IFN-gamma.

conclusionCesarean section is associated with increased levels of IL-13 and IFN-gamma, perhaps because of lack of labor and/or reduced exposure to specific microbes (e.g., gram-positive anaerobes) at birth.

Identifiers

PMID17002791
PMCPMC1592116
OpenAlexW2137450812

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.