Imperial College London
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Professor Thomas N Williams

Faculty of Medicine, Department of Surgery & Cancer

Chair in Haemoglobinopathy Research
 
 
 
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Contact

 

tom.williams Website

 
 
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Location

 

Norfolk PlaceSt Mary's Campus

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Summary

 

Publications

Citation

BibTex format

@article{Uyoga:2020:cid/ciaa1141,
author = {Uyoga, S and Wanjiku, P and Rop, J and Makale, J and Macharia, A and Nyutu, G and Shebbe, M and Awuondo, K and Mturi, N and Woodrow, C and Dondorp, A and Maitland, K and Williams, T and Williams, TN},
doi = {cid/ciaa1141},
journal = {Clinical Infectious Diseases},
pages = {e2415--e2423},
title = {Plasma Plasmodium falciparum Histidine-Rich Protein-2 concentrations in children with malaria infections of differing severity in Kilifi, Kenya},
url = {http://dx.doi.org/10.1093/cid/ciaa1141},
volume = {73},
year = {2020}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - BackgroundMost previous studies support a direct link between total parasite load and the clinical severity of Plasmodium falciparum malaria infections.MethodsWe estimated P. falciparum parasite loads in three groups of children with malaria infections of differing severity: (1) children with WHO-defined severe malaria (n=1,544); (2) children admitted with malaria but without features of severity (n=200) and; (3) children in the community with asymptomatic parasitemia (n=33).ResultsPeripheral parasitemias were highest in those with uncomplicated malaria (geometric mean 111,064; 95%CI 86,798-141,819 parasites/μl), being almost three times higher than those with severe malaria (39,588; 34,990-44,791 parasites/μl) and >100 times higher than in those with asymptomatic malaria (1,092; 523-2,280 parasites/μl). However, geometric mean PfHRP2 values (95% CI) increased with severity, being 7 (4-12) ng/ml in asymptomatic malaria, 843 (655-1,084) ng/ml in uncomplicated malaria and 1,369 (1,244-1,506) ng/ml in severe malaria. PfHRP2 concentrations were markedly lower in the sub-group of severe malaria patients with concomitant invasive bacterial infections (IBIs) of blood or CSF (GM 312 ng/ml; 95%CI 175-557; p<0.0001) than in those without IBIs (GM 1,439 ng/ml; 1,307-1,584; P<0.001).ConclusionsThe clinical severity of malaria infections related strongly to the total burden of P. falciparum parasites. A quantitative test for plasma concentrations of PfHRP2 could be useful in identifying children at the greatest clinical risk and to identify critically ill children in whom malaria is not the primary cause.
AU  - Uyoga,S
AU  - Wanjiku,P
AU  - Rop,J
AU  - Makale,J
AU  - Macharia,A
AU  - Nyutu,G
AU  - Shebbe,M
AU  - Awuondo,K
AU  - Mturi,N
AU  - Woodrow,C
AU  - Dondorp,A
AU  - Maitland,K
AU  - Williams,T
AU  - Williams,TN
DO  - cid/ciaa1141
EP  - 2423
PY  - 2020///
SN  - 1058-4838
SP  - 2415
TI  - Plasma Plasmodium falciparum Histidine-Rich Protein-2 concentrations in children with malaria infections of differing severity in Kilifi, Kenya
T2  - Clinical Infectious Diseases
UR  - http://dx.doi.org/10.1093/cid/ciaa1141
UR  - https://academic.oup.com/cid/article/73/7/e2415/5890098
UR  - http://hdl.handle.net/10044/1/82166
VL  - 73
ER  -
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