Evidence map›Paper›PMID 21572427›Full record

ArticleNature medicine2011

Host-mediated regulation of superinfection in malaria.

Silvia Portugal, Céline Carret, Mario Recker, Andrew E Armitage, Lígia A Gonçalves, Sabrina Epiphanio, David Sullivan, Cindy Roy, Chris I Newbold, Hal Drakesmith and 1 more

Open access · greenAbstract read
In one paragraph

Article in Nature medicine, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 141 papers.

0numbers the graph read from it
0cells of the map it votes in
141citing papers in PubMed
14.5field-weighted citation impact, top 1% 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

141 citing papers in PubMed, 240 citations in OpenAlex.

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  6. bioRxiv : the preprint server for biology · 2026
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  16. Single-cell analyses of polyclonalResearch square · 2024
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  18. The effects of intracellular iron availability on the outcome ofJournal of parasitic diseases : official organ of the Indian Society for Parasitology · 2023
    Article
  19. Article
  20. Article

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

4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

11 authors at 7 institutions in 4 countries.

Silvia PortugalInstituto de Medicina Molecular, Faculdade de Medicina da Universidade de Lisboa, Lisboa, Portugal.
Céline Carret
Mario Recker
Andrew E Armitage
Lígia A Gonçalves
Sabrina Epiphanio
David Sullivan
Cindy Roy
Chris I Newbold
Hal Drakesmith
Maria M Mota
Instituto Gulbenkian de Ciência · PTJohn Radcliffe Hospital · GBUniversity of Lisbon · PTUniversity of Oxford · GBJohns Hopkins Medicine · USJohns Hopkins University · USUniversidade Federal de São Paulo · BR

Funding

Mechanisms of anemia of chronic inflammation and aging in mice.R01DK082722 · NIDDK · JOHNS HOPKINS UNIVERSITY · PI ROY, CINDY NORENE · 2009 to 2013
$1.6M
Influence of Iron on Murine MalariaU01HD061241 · NICHD · JOHNS HOPKINS UNIVERSITY · PI SULLIVAN, DAVID JOSEPH · 2009 to 2012
$786k
Medical Research Council G0901149NICHD NIH HHS U01 HD061241NIDDK NIH HHS R01 DK082722
6 · The paper itself

Abstract

In regions of high rates of malaria transmission, mosquitoes repeatedly transmit liver-tropic Plasmodium sporozoites to individuals who already have blood-stage parasitemia. This manifests itself in semi-immune children (who have been exposed since birth to Plasmodium infection and as such show low levels of peripheral parasitemia but can still be infected) older than 5 years of age by concurrent carriage of different parasite genotypes at low asymptomatic parasitemias. Superinfection presents an increased risk of hyperparasitemia and death in less immune individuals but counterintuitively is not frequently observed in the young. Here we show in a mouse model that ongoing blood-stage infections, above a minimum threshold, impair the growth of subsequently inoculated sporozoites such that they become growth arrested in liver hepatocytes and fail to develop into blood-stage parasites. Inhibition of the liver-stage infection is mediated by the host iron regulatory hormone hepcidin, whose synthesis we found to be stimulated by blood-stage parasites in a density-dependent manner. We mathematically modeled this phenomenon and show how density-dependent protection against liver-stage malaria can shape the epidemiological patterns of age-related risk and the complexity of malaria infections seen in young children. The interaction between these two Plasmodium stages and host iron metabolism has relevance for the global efforts to reduce malaria transmission and for evaluation of iron supplementation programs in malaria-endemic regions.

Indexed as

AnimalsAntimicrobial Cationic PeptidesDisease ProgressionHepcidinsHost-Parasite InteractionsHumansLiverMalariaMiceMice, Inbred BALB CMice, Inbred C57BLPlasmodiumSporozoitesSuperinfectionAntimicrobial Cationic PeptidesHAMP protein, humanHamp protein, mouseHepcidins

Identifiers

PMID21572427
PMCPMC4200394
OpenAlexW1976484400

What OpenQuestion holds

Textmetadata
LicenceTDM
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.