Evidence map›Paper›PMID 22206234›Full record

ArticleMalaria journal2011

Early and extensive CD55 loss from red blood cells supports a causal role in malarial anaemia.

Moses Gwamaka, Michal Fried, Gonzalo Domingo, Patrick E Duffy

Open access · goldAbstract read
In one paragraph

Article in Malaria journal, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
20citing papers in PubMed, 1 pooled it
2.2field-weighted citation impact, top 12% 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

20 citing papers in PubMed, 1 synthesis or guideline pooled it, 37 citations in OpenAlex.

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  14. Blood Groups in Infection and Host Susceptibility.Clinical microbiology reviews · 2015
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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

4 authors at 3 institutions in 2 countries.

Moses GwamakaMother-Offspring Malaria Studies Project, Muheza Designated District Hospital, Muheza, Tanzania. mgwamaka@ihi.or.tz
Michal Fried
Gonzalo Domingo
Patrick E Duffy
Center for Infectious Disease Research · USMother Hospital · INProgram for Appropriate Technology in Health · US

Funding

Malaria Pathogenesis in young children and vaccine discoveryZIAAI001134 · NIAID · NATIONAL INSTITUTE OF ALLERGY AND INFECTIOUS DISEASES · PI DUFFY, PATRICK · 2010 to 2025
$11.3M
Pathogenesis of falciparum malaria in infancyR01AI052059 · NIAID · SEATTLE BIOMEDICAL RESEARCH INSTITUTE · PI DUFFY, PATRICK E · 2001 to 2004
$2.7M
Malaria at the Mother-child InterfaceD43TW005509 · FIC · SEATTLE BIOMEDICAL RESEARCH INSTITUTE · PI KUBLIN, JAMES G. · 2002 to 2013
$1.6M
FIC NIH HHS D43 TW005509NIAID NIH HHS R01AI52059
6 · The paper itself

Abstract

backgroundLevels of complement regulatory proteins (CrP) on the surface of red blood cells (RBC) decrease during severe malarial anaemia and as part of cell ageing process. It remains unclear whether CrP changes seen during malaria contribute to the development of anaemia, or result from an altered RBC age distribution due to suppressive effects of malaria on erythropoiesis.

methodsA cross sectional study was conducted in the north-east coast of Tanzania to investigate whether the changes in glycosylphosphatidylinositol (GPI)-anchored complement regulatory proteins (CD55 and CD59) contributes to malaria anaemia. Blood samples were collected from a cohort of children under intensive surveillance for Plasmodium falciparum parasitaemia and illness. Levels of CD55 and CD59 were measured by flow cytometer and compared between anaemic (8.08 g/dl) and non- anaemic children (11.42 g/dl).

resultsLevels of CD55 and CD59 decreased with increased RBC age. CD55 levels were lower in anaemic children and the difference was seen in RBC of all ages. Levels of CD59 were lower in anaemic children, but these differences were not significant. CD55, but not CD59, levels correlated positively with the level of haemoglobin in anaemic children.

conclusionThe extent of CD55 loss from RBC of all ages early in the course of malarial anaemia and the correlation of CD55 with haemoglobin levels support the hypothesis that CD55 may play a causal role in this disorder.

Indexed as

AnemiaCD55 AntigensCD59 AntigensChild, PreschoolCross-Sectional StudiesErythrocyte AgingErythrocytesFemaleFlow CytometryHemoglobinsHumansInfantMalaria, FalciparumMaleParasite LoadParasitemiaCD55 AntigensCD59 AntigensCD59 protein, humanHemoglobins

Identifiers

PMID22206234
PMCPMC3322349
OpenAlexW2111483371

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.