Short Report : Childhood Coinfections with Plasmodium falciparum and Schistosoma mansoni Result in Lower Percentages of Activated T Cells and T Regulatory Memory Cells than Schistosomiasis Only

Flow cytometric analyses were performed to evaluate HLA-DR (+) activated T lymphocytes (Tact; CD3 (+)/CD4 (+)/CD25(medium)) and T regulatory cells (Treg; CD3 (+)/CD4(+)/CD25(high)) in the circulation of children 8-10 years of age living in an area endemic for both Plasmodium falciparum and Schistoso...

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Veröffentlicht in:The American journal of tropical medicine and hygiene 2009-03, Vol.80 (3), p.475-478
Hauptverfasser: MOUK, Erick M. O, MWINZI, Pauline N. M, BLACK, Carla L, CARTER, Jennifer M, NG'ANG'A, Zipporah W, GICHERU, Michael M, SECOR, W. Evan, KARANJA, Diana M. S, COLLEY, Daniel G
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container_title The American journal of tropical medicine and hygiene
container_volume 80
creator MOUK, Erick M. O
MWINZI, Pauline N. M
BLACK, Carla L
CARTER, Jennifer M
NG'ANG'A, Zipporah W
GICHERU, Michael M
SECOR, W. Evan
KARANJA, Diana M. S
COLLEY, Daniel G
description Flow cytometric analyses were performed to evaluate HLA-DR (+) activated T lymphocytes (Tact; CD3 (+)/CD4 (+)/CD25(medium)) and T regulatory cells (Treg; CD3 (+)/CD4(+)/CD25(high)) in the circulation of children 8-10 years of age living in an area endemic for both Plasmodium falciparum and Schistosoma mansoni in western Kenya. Those children with only S. mansoni had a higher mean percentage of HLA-DR (+) Tact than those who were co-infected with these two intravascular parasites. The proportion of circulating Treg was comparable in children with only schistosomiasis and both schistosomiasis and malaria. However, the mean level of memory Treg (Treg expressing CD45RO (+)) in those with dual infections was lower than in children with schistosomiasis alone. These imbalances in Tact and Treg memory subsets in children infected with both schistosomiasis and malaria may be related to the differential morbidity or course of infection attributed to coinfections with these parasites.
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subjects Animals
Biological and medical sciences
Child
Diseases caused by trematodes
Female
Flow Cytometry
Helminthic diseases
Humans
Infectious diseases
Malaria, Falciparum - complications
Malaria, Falciparum - immunology
Male
Medical sciences
Parasitic diseases
Plasmodium falciparum - immunology
Schistosoma mansoni - immunology
Schistosomiases
Schistosomiasis mansoni - complications
Schistosomiasis mansoni - immunology
T-Lymphocyte Subsets - physiology
title Short Report : Childhood Coinfections with Plasmodium falciparum and Schistosoma mansoni Result in Lower Percentages of Activated T Cells and T Regulatory Memory Cells than Schistosomiasis Only
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