Evidence map›Paper›PMID 33724257›Full record

ArticleAIDS (London, England)2021

Differential impact of antiretroviral therapy initiated before or during pregnancy on placenta pathology in HIV-positive women.

Nadia M Ikumi, Thokozile R Malaba, Komala Pillay, Marta C Cohen, Hlengiwe P Madlala, Mushi Matjila, Dilly Anumba, Landon Myer, Marie-Louise Newell, Clive M Gray and 1 more

Open access · greenAbstract read
In one paragraph

Article in AIDS (London, England), 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers.

0numbers the graph read from it
0cells of the map it votes in
17citing papers in PubMed
3.1field-weighted citation impact, top 8% 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, 27 citations in OpenAlex.

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  15. Preterm Birth in Women With HIV: The Role of the Placenta.Frontiers in global women's health · 2022
    Review
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  17. Observational
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

11 authors at 5 institutions in 2 countries.

Nadia M IkumiDivision of Immunology, Institute of Infectious Disease and Molecular Medicine.
Thokozile R MalabaDivision of Epidemiology and Biostatistics, School of Public Health and Family Medicine.
Komala PillayDivision of Anatomical Pathology, Department of Pathology, University of Cape Town.
Marta C CohenDepartment of Histopathology, Sheffield Children's NHS Foundation Trust.
Hlengiwe P MadlalaDivision of Epidemiology and Biostatistics, School of Public Health and Family Medicine.
Mushi MatjilaDepartment of Obstetrics and Gynaecology, University of Cape Town, Cape Town, South Africa.
Dilly AnumbaAcademic Unit of Reproductive and Developmental Medicine, University of Sheffield, Sheffield.
Landon MyerDivision of Epidemiology and Biostatistics, School of Public Health and Family Medicine.
Marie-Louise NewellSchool of Human Development and Health, Faculty of Medicine, University of Southampton, Southampton, UK.
Clive M GrayDivision of Immunology, Institute of Infectious Disease and Molecular Medicine.
PIMS Study Group
Faculty of Public Health · GBUniversity of Cape Town · ZAUniversity of Sheffield · GBNational Health Laboratory Service · ZAUniversity of Southampton · GB

Funding

ART and risk of preterm delivery in a rural high HIV prevalence areaR01HD080385 · NICHD · UNIVERSITY OF SOUTHAMPTON · PI NEWELL, MARIE-LOUISE HENRICAFERNANDE · 2014 to 2019
$1.8M
MECHANISMS LEADING TO ADVERSE BIRTH OUTCOMES IN SOUTH AFRICAN HIV-INFECTED WOMENR01HD102050 · NICHD · UNIVERSITY OF CAPE TOWN · PI GRAY, CLIVE MAURICE, JASPAN, HEATHER BERYL · 2020 to 2024
$1.7M
Mechanisms of altered immune responses in HIV exposed infantsR21HD083344 · NICHD · UNIVERSITY OF CAPE TOWN · PI GRAY, CLIVE MAURICE, JASPAN, HEATHER BERYL · 2015 to 2016
$415k
Mechanisms by which trophoblasts recruit T cells to the placental villi during maternal HIV and CMV co-infectionR21HD103498 · NICHD · MAYO CLINIC ROCHESTER · PI CHAKRABORTY, RANA, GRAY, CLIVE MAURICE · 2020 to 2021
$390k
NICHD NIH HHS R01 HD080385NICHD NIH HHS R01 HD102050NICHD NIH HHS R21 HD083344NICHD NIH HHS R21 HD103498
6 · The paper itself

Abstract

objectiveTo examine the association between timing of antiretroviral treatment (ART) initiation in HIV-infected women and placental histopathology.

designA nested substudy in a larger cohort of HIV-infected women which examined the association between ART status and birth outcomes.

methodsPlacentas (n = 130) were examined for histopathology from two ART groups: stable (n = 53), who initiated ART before conception and initiating (n = 77), who started ART during pregnancy [median (interquartile range) 15 weeks gestation (11-18)]. Using binomial regression we quantified associations between ART initiation timing with placental histopathology and pregnancy outcomes.

resultsOne-third of all placentas were less than 10th percentile weight-for-gestation and there was no significant difference between ART groups. Placental diameter, thickness, cord insertion position and foetal-placental weight ratio were also similar by group. However, placentas from the stable group showed increased maternal vascular malperfusion (MVM) (39.6 vs. 19.4%), and decreased weight (392 vs. 422 g, P = 0.09). MVM risk was twice as high [risk ratios 2.03 (95% confidence interval: 1.16-3.57); P = 0.01] in the stable group; the increased risk remaining significant when adjusting for maternal age [risk ratios 2.04 (95% confidence interval: 1.12-3.72); P = 0.02]. Furthermore, MVM was significantly associated with preterm delivery and low birth weight (P = 0.002 and <0.0001, respectively).

conclusionPreconception initiation of ART was associated with an increased MVM risk, and may contribute to placental dysfunction. The association between MVM with preterm delivery and low birth weight suggests that a placenta-mediated mechanism likely links the putative association between long-term use of ART and adverse birth outcomes.

Indexed as

HIV InfectionsPregnancy Complications, InfectiousFemaleGestational AgeHumansInfant, NewbornPlacentaPregnancyPregnancy Outcome

Identifiers

PMID33724257
PMCPMC8630811
OpenAlexW3134263980

What OpenQuestion holds

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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.