Evidence map›Paper›PMID 21080932›Full record

ArticleMalaria journal2010

Augmented plasma microparticles during acute Plasmodium vivax infection.

Fernanda M F Campos, Bernardo S Franklin, Andréa Teixeira-Carvalho, Agnaldo L S Filho, Sálua C O de Paula, Cor J Fontes, Cristiana F Brito, Luzia H Carvalho

Abstract read
In one paragraph

Article in Malaria journal, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 76 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
76citing papers in PubMed, 1 pooled it
–field-weighted citation impact
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

76 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
  2. Extracellular vesicles related to familial hypercholesterolemia.Archives of endocrinology and metabolism · 2026
    Article
  3. Article
  4. New therapeutic strategies for malaria.Biophysical reviews · 2025
    Review
  5. Review
  6. Article
  7. Review
  8. UnveilingFrontiers in cellular and infection microbiology · 2024
    Article
  9. Review
  10. Article
  11. Article
  12. Review
  13. Phosphatidylserine-positive extracellular vesicles boost effector CD8Proceedings of the National Academy of Sciences of the United States of America · 2023
    Article
  14. Review
  15. Review
  16. Differential Effect of Extracellular Vesicles Derived fromInternational journal of molecular sciences · 2023
    Article
  17. Article
  18. Review
  19. Review
  20. Erythropoiesis and Malaria, a Multifaceted Interplay.International journal of molecular sciences · 2022
    Review

16 more citing papers are in PubMed but not listed here.

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.

Fernanda M F CamposCentro de Pesquisas René Rachou/Fundação Oswaldo Cruz, Av, Augusto de Lima 1715, Belo Horizonte, MG 30190-002, Brazil.
Bernardo S Franklin
Andréa Teixeira-Carvalho
Agnaldo L S Filho
Sálua C O de Paula
Cor J Fontes
Cristiana F Brito
Luzia H Carvalho

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundIn the last few years, the study of microparticles (MPs)--submicron vesicles released from cells upon activation or apoptosis--has gained growing interest in the field of inflammation and in infectious diseases. Their role in the human malaria parasite Plasmodium vivax remains unexplored. Because acute vivax malaria has been related to pro-inflammatory responses, the main hypothesis investigated in this study was that Plasmodium vivax infection is associated with elevated levels of circulating MPs, which may play a role during acute disease in non-immune patients.

methodsPlasma MPs were analysed among thirty-seven uncomplicated P. vivax infections from an area of unstable malaria transmission in the Brazilian Amazon. The MP phenotype was analysed by flow cytometry using the classical MP marker, annexin, and fluorochrome-labeled monoclonal antibodies against specific cell surface markers. The frequencies of plasma MPs in P. vivax patients (n=37) were further compared to malaria-unexposed controls (n=15) and ovarian carcinoma patients (n=12), a known MPs-inducing disease non-related to malaria.

resultsThe frequencies of plasma circulating MPs were markedly increased in P. vivax patients, as compared to healthy age-matched malaria-unexposed controls. Although platelets, erythrocytes and leukocytes were the main cellular sources of MPs during vivax malaria, platelet derived-MPs (PMPs) increased in a linear fashion with the presence of fever at the time of blood collection (β=0.06, p<0.0001) and length of acute symptoms (β=0.36, p<0.0001). Finally, the results suggest that plasma levels of PMPs diminish as patient experience more episodes of clinical malaria (β=0.07, p<0.003).

conclusionsAbundant circulating MPs are present during acute P. vivax infection, and platelet derived-MPs may play a role on the acute inflammatory symptoms of malaria vivax.

Indexed as

AdolescentAdultAgedAnnexinsBrazilCell-Derived MicroparticlesFemaleFlow CytometryHumansMalaria, VivaxMaleMiddle AgedPlasmaYoung AdultAnnexins

Identifiers

PMID21080932
PMCPMC2998527

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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.