Cited by 170Malaria Research and ControlPregnancy and preeclampsia studiesGlobal Maternal and Child Health

THE EFFECTS OF PLASMODIUM FALCIPARUM AND P. VIVAX INFECTIONS ON PLACENTAL HISTOPATHOLOGY IN AN AREA OF LOW MALARIA TRANSMISSION

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McGREADY, ROSE, DAVISON, BILLIE B., STEPNIEWSKA, KASIA, CHO, THEIN, SHEE, HTEE, BROCKMAN, ALAN, UDOMSANGPETCH, RACHANEE, LOOAREESUWAN, SORNCHAI +3 more·2004·The American Journal of Tropical Medicine and Hygiene

Abstract

Placental histopathology was studied in a cohort of 204 women living in an area of low Plasmodium falciparum and P. vivax malaria transmission. Detection of malaria antenatally was active, by weekly peripheral blood smears, and all infections were treated. Significant histopathologic placental malaria changes (increased malaria pigment, cytotrophoblastic prominence, and presence of parasites) were found only in a minority of women who had P. falciparum infections in pregnancy. These changes were significantly more frequent in women with evidence of peripheral blood infection close to delivery and only in these cases were placental inflammatory cells increased. Antenatal P. vivax infection was associated only with the presence of malaria pigment in the placenta. All placental infections diagnosed by blood smear and 32.4% (12 of 37) diagnosed by histopathology were associated with patent peripheral parasitemia. This study indicates that prompt treatment of peripheral parasitemias during pregnancy limits placental pathology. The effect on birth weight reduction may not result from irreversible placental changes but from the acute insult of infection. These findings emphasize the importance of treating malaria in pregnancy promptly with effective antimalarial drugs.

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Crossref · 10.4269/ajtmh.2004.70.398

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  • Vivax parasites do not frequently express variant surface antigens, at the basis of placenta sequestration, so that this does not occur frequently.

    “Vivax parasites do not frequently express variant surface antigens, at the basis of placenta sequestration, so that this does not occur frequently.81”

    From Malaria in pregnancy. (2013) · cites this paper as [81]

  • Women with malaria detected by weekly antenatal screenings and effective treatment often have no histological changes at delivery.

    “women with malaria detected by weekly ante natal screenings and effective treatment often have no histological changes at delivery [56,57].”

    From Diagnosing malaria in pregnancy: An update (2012) · cites this paper as [56]

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Authors
McGREADY, R., DAVISON, B. B., STEPNIEWSKA, K., CHO, T., SHEE, H., BROCKMAN, A., UDOMSANGPETCH, R., LOOAREESUWAN, S., WHITE, N. J., MESHNICK, S. R., & NOSTEN, F.
Affiliations
  • University of North Carolina at Chapel Hill (US)
  • Shoklo Malaria Research Unit, Mae Sot, Thailand; Faculty of Tropical Medicine, and Faculty of Science, Mahidol University, Bangkok, Thailand; Centre for Clinical Vaccinology and Tropical Medicine, Churchill Hospital, Oxford, United Kingdom; Division of Comparative Pathology, Tulane National Primate Research Center, Covington, Louisiana; Departments of Epidemiology and Microbiology and Immunology, University of North Carolina, Chapel Hill, North Carolina
Venue
The American Journal of Tropical Medicine and Hygiene
Published
2004-04
Volume
70
Issue
4
Pages
398-407
ISSN
0002-9637 (ISSN-L)
OpenAlex
W2102655747
Cited by
170
References
46
Citations by year
2026: 2 · 2025: 1 · 2023: 3 · 2022: 6 · 2021: 9 · 2020: 17 · 2019: 6 · 2018: 9 · 2017: 7 · 2016: 4 · 2015: 10 · 2014: 7 · 2013: 17 · 2012: 16
FWCI
9.21
Type
journal article
Language
en
Open access
Locations
  • American Journal of Tropical Medicine and Hygiene (publishedVersion)
  • PubMed (publishedVersion)
  • Carolina Digital Repository (University of North Carolina at Chapel Hill) (submittedVersion)
  • UNC Libraries
Funders
  • National Institutes of Health (5r01ai042400-05)
  • National Institute of Allergy and Infectious Diseases (5R01AI42400)
  • National Center for Research Resources (P51-RR-00164, P51RR000164)
Topics
  • Health Sciences › Medicine › Public Health, Environmental and Occupational Health › Malaria Research and Control
  • Health Sciences › Medicine › Obstetrics and Gynecology › Pregnancy and preeclampsia studies
  • Health Sciences › Medicine › Pediatrics, Perinatology and Child Health › Global Maternal and Child Health
Keywords
Plasmodium falciparum, Plasmodium vivax, placental malaria, placental pathology, malaria in pregnancy, hemozoin, placental inflammation, low malaria transmission
MeSH terms
Adolescent, Adult, Animals, Antimalarials, Female, Fetal Blood, Histocytochemistry, Humans, Infant, Low Birth Weight, Infant, Newborn, Placenta, Plasmodium falciparum, Plasmodium vivax, Pregnancy, Prospective Studies, Thailand, Cohort Studies, Pregnancy Complications, Parasitic, Malaria, Falciparum, Malaria, Vivax, Parasitemia

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