Evidence map›Paper›PMID 27126191›Full record

ArticleScientific reports2016

Potential pathways by which maternal second-hand smoke exposure during pregnancy causes full-term low birth weight.

Zhongzheng Niu, Chuanbo Xie, Xiaozhong Wen, Fuying Tian, Shixin Yuan, Deqin Jia, Wei-Qing Chen

Open access · goldAbstract read
In one paragraph

Article in Scientific reports, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
13citing papers in PubMed, 1 pooled it
2.3field-weighted citation impact, top 12% 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

13 citing papers in PubMed, 1 synthesis or guideline pooled it, 32 citations in OpenAlex.

  1. Pooled it
  2. Article
  3. Article
  4. Article
  5. Article
  6. A Comparison of Measured Airborne and Self-Reported Secondhand Smoke Exposure in the MADRES Pregnancy Cohort Study.Nicotine & tobacco research : official journal of the Society for Research on Nicotine and Tobacco · 2024
    Article
  7. Article
  8. Article
  9. Observational
  10. Article
  11. Review
  12. Article
  13. Secondhand Smoke Exposure during Pregnancy and its Effect on Birth Outcomes: Evidence from a Retrospective Cohort Study in a Tertiary Care Hospital in Bengaluru.Indian journal of community medicine : official publication of Indian Association of Preventive & Social Medicine
    Article
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

7 authors at 3 institutions in 2 countries.

Zhongzheng NiuDepartment of Biostatistics and Epidemiology, School of Public Health, Sun Yat-sen University, Guangzhou, China.
Chuanbo XieDepartment of Biostatistics and Epidemiology, School of Public Health, Sun Yat-sen University, Guangzhou, China.
Xiaozhong WenDivision of Behavioral Medicine, Department of Pediatrics, School of Medicine and Biomedical Sciences, State University of New York at Buffalo, Buffalo, USA.
Fuying TianDepartment of Biostatistics and Epidemiology, School of Public Health, Sun Yat-sen University, Guangzhou, China.
Shixin YuanShenzhen Women and Children's Hospital, Shenzhen, China.
Deqin JiaFoshan Women and Children's Hospital, Foshan, China.
Wei-Qing ChenDepartment of Biostatistics and Epidemiology, School of Public Health, Sun Yat-sen University, Guangzhou, China.
Sun Yat-sen University · CNFoshan Maternity and Child Health Care Hospital · CNUniversity at Buffalo, State University of New York · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

It is well documented that maternal exposure to second-hand smoke (SHS) during pregnancy causes low birth weight (LBW), but its mechanism remains unknown. This study explored the potential pathways. We enrolled 195 pregnant women who delivered full-term LBW newborns, and 195 who delivered full-term normal birth weight newborns as the controls. After controlling for maternal age, education level, family income, pre-pregnant body mass index, newborn gender and gestational age, logistic regression analysis revealed that LBW was significantly and positively associated with maternal exposure to SHS during pregnancy, lower placental weight, TNF-α and IL-1β, and that SHS exposure was significantly associated with lower placental weight, TNF-α and IL-1β. Structural equation modelling identified two plausible pathways by which maternal exposure to SHS during pregnancy might cause LBW. First, SHS exposure induced the elevation of TNF-α, which might directly increase the risk of LBW by transmission across the placenta. Second, SHS exposure first increased maternal secretion of IL-1β and TNF-α, which then triggered the secretion of VCAM-1; both TNF-α and VCAM-1 were significantly associated with lower placental weight, thus increasing the risk of LBW. In conclusion, maternal exposure to SHS during pregnancy may lead to LBW through the potential pathways of maternal inflammation and lower placental weight.

Indexed as

AdultBody Mass IndexCase-Control StudiesFemaleGestational AgeHumansInfant, Low Birth WeightInfant, NewbornInterleukin-1betaMaternal AgeMaternal ExposureOrgan SizePregnancyTerm BirthTobacco Smoke PollutionTumor Necrosis Factor-alphaIL1B protein, humanInterleukin-1betaTNF protein, humanTobacco Smoke PollutionTumor Necrosis Factor-alpha

Identifiers

PMID27126191
PMCPMC4850398
OpenAlexW2345227434

What OpenQuestion holds

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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.