Evidence map›Paper›PMID 30272633›Full record

ArticleJournal of acquired immune deficiency syndromes (1999)2019

Placental Structure in Preterm Birth Among HIV-Positive Versus HIV-Negative Women in Kenya.

Moses M Obimbo, Yan Zhou, Michael T McMaster, Craig R Cohen, Zahida Qureshi, John Ong'ech, Julius A Ogeng'o, Susan J Fisher

Open access · hybridAbstract read
In one paragraph

Article in Journal of acquired immune deficiency syndromes (1999), 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
17citing papers in PubMed, 1 pooled it
3.8field-weighted citation impact, top 6% 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

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

  1. Pooled it
  2. Review
  3. Article
  4. Review
  5. The effect of antenatal isoniazid preventive therapy on birth outcomes in Western Kenya.The international journal of tuberculosis and lung disease : the official journal of the International Union against Tuberculosis and Lung Disease · 2023
    Article
  6. Article
  7. Article
  8. Article
  9. HIV Associated Preeclampsia: A Multifactorial Appraisal.International journal of molecular sciences · 2021
    Review
  10. Review
  11. Article
  12. Article
  13. Article
  14. Article
  15. Article
  16. Article
  17. Placental vascular abnormalities in the mouse alter umbilical artery wave reflections.American journal of physiology. Heart and circulatory physiology · 2019
    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

8 authors at 4 institutions in 2 countries.

Moses M ObimboObstetrics and Gynecology, University of Nairobi, Nairobi, Kenya.
Yan ZhouDepartment of Obstetrics, Gynecology and Reproductive Sciences, Center for Reproductive Sciences, University of California San Francisco, San Francisco, CA.
Michael T McMasterThe Eli & Edythe Broad Center for Regeneration Medicine and Stem Cell Research, University of California San Francisco, San Francisco, CA.
Craig R CohenDepartment of Obstetrics, Gynecology and Reproductive Health, Bixby Center for Reproductive Health, University of California San Francisco, San Francisco, CA.
Zahida QureshiObstetrics and Gynecology, University of Nairobi, Nairobi, Kenya.
John Ong'echDepartment of Obstetrics and Gynecology, Kenyatta National Hospital, Nairobi, Kenya.
Julius A Ogeng'o
Susan J FisherDepartment of Obstetrics, Gynecology and Reproductive Sciences, Center for Reproductive Sciences, University of California San Francisco, San Francisco, CA.
University of California, San Francisco · USBroad Center · USKenyatta National Hospital · KEUniversity of Nairobi · KE

Funding

Virology CoreP30AI027763 · NIAID · UNIVERSITY OF CALIFORNIA, SAN FRANCISCO · PI MALLORY O JOHNSON · 1988 to 2026
$93.6M
NIAID NIH HHS P30 AI027763
6 · The paper itself

Abstract

backgroundPreterm birth (PTB) is a major cause of infant morbidity and mortality in developing countries. Recent data suggest that in addition to Human Immunodeficiency Virus (HIV) infection, use of antiretroviral therapy (ART) increases the risk of PTB. As the mechanisms remain unexplored, we conducted this study to determine whether HIV and ART were associated with placental changes that could contribute to PTB.

settingWe collected and evaluated placentas from 38 HIV-positive women on ART and 43 HIV-negative women who had preterm deliveries in Nairobi, Kenya.

methodsAnatomical features of the placentas were examined at gross and microscopic levels. Cases were matched for gestational age and compared by the investigators who were blinded to maternal HIV serostatus.

resultsAmong preterm placentas, HIV infection was significantly associated with thrombosis (P = 0.001), infarction (P = 0.032), anomalies in cord insertion (P = 0.02), gross evidence of membrane infection (P = 0.043), and reduced placental thickness (P = 0.010). Overall, preterm placentas in both groups were associated with immature villi, syncytial knotting, villitis, and deciduitis. Features of HIV-positive versus HIV-negative placentas included significant fibrinoid deposition with villus degeneration, syncytiotrophoblast delamination, red blood cell adhesion, hypervascularity, and reduction in both surface area and perimeter of the terminal villi.

conclusionsThese results imply that HIV infection and/or ART are associated with morphological changes in preterm placentas that contribute to delivery before 37 weeks. Hypervascularity suggests that the observed pathologies may be attributable, in part, to hypoxia. Further research to explore potential mechanisms will help elucidate the pathways that are involved perhaps pointing to interventions for decreasing the risk of prematurity among HIV-positive women.

Indexed as

AdultChorionic VilliFemaleFetal HypoxiaGestational AgeHealth SurveysHIV SeronegativityHIV SeropositivityHumansInfant, NewbornKenyaPlacentaPregnancyPregnancy Complications, InfectiousPremature Birth

Identifiers

PMID30272633
PMCPMC6289800
OpenAlexW2893864417

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.