Evidence map›Paper›PMID 23053630›Full record

ArticleThe Journal of infectious diseases2012

Placental infection with Plasmodium vivax: a histopathological and molecular study.

Alfredo Mayor, Azucena Bardají, Ingrid Felger, Christopher L King, Pau Cisteró, Carlota Dobaño, Danielle I Stanisic, Peter Siba, Mats Wahlgren, Hernando del Portillo and 4 more

Open access · bronzeAbstract read
In one paragraph

Article in The Journal of infectious diseases, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 35 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
35citing papers in PubMed, 2 pooled it
7.2field-weighted citation impact, top 3% 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

35 citing papers in PubMed, 2 syntheses or guidelines pooled it, 54 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Trial
  4. Current update on malaria in pregnancy: a systematic review.Tropical diseases, travel medicine and vaccines · 2025
    Review
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  16. Management of malaria in pregnancy.The Indian journal of medical research · 2017
    Review
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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 9 institutions in 6 countries.

Alfredo MayorBarcelona Centre for International Health Research (CRESIB, Hospital Clínic-Universitat de Barcelona), Barcelona, Spain. agmayor@clinic.ub.es
Azucena Bardají
Ingrid Felger
Christopher L King
Pau Cisteró
Carlota Dobaño
Danielle I Stanisic
Peter Siba
Mats Wahlgren
Hernando del Portillo
Ivo Mueller
Clara Menéndez
Jaume Ordi
Stephen Rogerson
Barcelona Centre for International Affairs · ESUniversitat de Barcelona · ESPapua New Guinea Institute of Medical Research · PGCenter for Global Health · USInstitució Catalana de Recerca i Estudis Avançats · ESKarolinska Institutet · SESwiss Tropical and Public Health Institute · CHUniversity of Melbourne · AUWalter and Eliza Hall Institute of Medical Research · AU

Funding

Fetal Immunity to Falciparum MalariaR01AI064687 · NIAID · CASE WESTERN RESERVE UNIVERSITY · PI KING, CHRISTOPHER L · 2005 to 2015
$3.7M
NIAID NIH HHS R01 AI064687
6 · The paper itself

Abstract

backgroundEvidence of the presence of Plasmodium vivax in the placenta is scarce and inconclusive. This information is relevant to understanding whether P. vivax affects placental function and how it may contribute to poor pregnancy outcomes.

methodsHistopathologic examination of placental biopsies from 80 Papua New Guinean pregnant women was combined with quantitative polymerase chain reaction (qPCR) to confirm P. vivax infection and rule out coinfection with other Plasmodium species in placental and peripheral blood. Leukocytes and monocytes/macrophages were detected in placental sections by immunohistochemistry.

resultsMonoinfection by P. vivax and Plasmodium falciparum was detected by qPCR in 8 and 10 placentas, respectively. Seven of the 8 women with P. vivax placental monoinfection were negative in peripheral blood. By histology, 3 placentas with P. vivax monoinfection showed parasitized erythrocytes in the intervillous space but no hemozoin in macrophages nor increased intervillous inflammatory cells. In contrast, 7 placentas positive for P. falciparum presented parasites and hemozoin in macrophages or fibrin as well as intervillous inflammatory infiltrates.

conclusionsPlasmodium vivax can be associated with placental infection. However, placental inflammation is not observed in P. vivax monoinfections, suggesting other causes of poor delivery outcomes associated with P. vivax infection.

Indexed as

AdolescentAdultBiopsyFemaleHistocytochemistryHumansImmunohistochemistryMalaria, VivaxPlacentaPlasmodium vivaxPregnancyPregnancy Complications, ParasiticReal-Time Polymerase Chain ReactionYoung Adult

Identifiers

PMID23053630
PMCPMC6592414
OpenAlexW2139560837

What OpenQuestion holds

Textmetadata
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.