Evidence map›Paper›PMID 24758172›Full record

ArticleMalaria journal2014

Evidence for significant influence of host immunity on changes in differential blood count during malaria.

Nicole Berens-Riha, Inge Kroidl, Mirjam Schunk, Martin Alberer, Marcus Beissner, Michael Pritsch, Arne Kroidl, Günter Fröschl, Ingrid Hanus, Gisela Bretzel and 4 more

Abstract readEvaluation Study
In one paragraph

Article in Malaria journal, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 26 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
26citing papers in PubMed, 2 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

26 citing papers in PubMed, 2 syntheses or guidelines pooled it.

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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.

Nicole Berens-RihaDepartment of Infectious Diseases and Tropical Medicine, Medical Centre of the University of Munich, Ludwig-Maximilians-Universität (LMU), Leopoldstraße 5, 80802 Munich, Germany. berens@lrz.uni-muenchen.de.
Inge Kroidl
Mirjam Schunk
Martin Alberer
Marcus Beissner
Michael Pritsch
Arne Kroidl
Günter Fröschl
Ingrid Hanus
Gisela Bretzel
Frank von Sonnenburg
Hans Dieter Nothdurft
Thomas Löscher
Karl-Heinz Herbinger

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundMalaria has been shown to change blood counts. Recently, a few studies have investigated the alteration of the peripheral blood monocyte-to-lymphocyte count ratio (MLCR) and the neutrophil-to-lymphocyte count ratio (NLCR) during infection with Plasmodium falciparum. Based on these findings this study investigates the predictive values of blood count alterations during malaria across different sub-populations.

methodsCases and controls admitted to the Department of Infectious Diseases and Tropical Medicine from January 2000 through December 2010 were included in this comparative analysis. Blood count values and other variables at admission controlled for age, gender and immune status were statistically investigated.

resultsThe study population comprised 210 malaria patients, infected with P. falciparum (68%), Plasmodium vivax (21%), Plasmodium ovale (7%) and Plasmodium malariae (4%), and 210 controls. A positive correlation of parasite density with NLCR and neutrophil counts, and a negative correlation of parasite density with thrombocyte, leucocyte and lymphocyte counts were found. An interaction with semi-immunity was observed; ratios were significantly different in semi-immune compared to non-immune patients (P <0.001).The MLCR discriminated best between malaria cases and controls (AUC = 0.691; AUC = 0.741 in non-immune travellers), whereas the NLCR better predicted severe malaria, especially in semi-immune patients (AUC = 0.788).

conclusionMalaria causes typical but non-specific alterations of the differential blood count. The predictive value of the ratios was fair but limited. However, these changes were less pronounced in patients with semi-immunity. The ratios might constitute easily applicable surrogate biomarkers for immunity.

Indexed as

AdolescentAdultAgedBiomarkersCase-Control StudiesChildChild, PreschoolFemaleGermanyHumansInfantLeukocyte CountMalariaMaleMiddle AgedParasitemiaBiomarkers

Identifiers

PMID24758172
PMCPMC4021259

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Registered trials

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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.