Abstract | BACKGROUND:
Transforming growth factor beta-1 (TGF-β1) is an important regulator of inflammation. Platelets are a major source of TGF-β1 and are reduced in severe malaria. However, the relationships between TGF-β1 concentrations and platelet counts, proinflammatory and anti-inflammatory cytokine and chemokine concentrations and disease severity in malaria have not been characterized. METHODS: RESULTS: TGF-β1 concentrations decreased with increasing severity of disease [median concentrations (25th, 75th percentile) in ng/mL in CC, 41.4 (31.6, 57.4); UM, 22.7 (14.1, 36.4); CM, 11.8 (8, 21); P for trend < 0.0001]. In children with CM or UM, TGF-β1 concentrations correlated positively with platelet count (CM, P < 0.0001; UM, P = 0.0015). In children with CM, TGF-β1 concentration correlated negatively with IFN-γ, IL-6 and IL-10 and positively with RANTES concentrations (all P < 0.01). TGF-β1 concentration was not associated with death or adverse neurologic or cognitive outcomes in children with CM. CONCLUSIONS: TGF-β1 concentrations decrease with increasing Plasmodium falciparum disease severity. In CM, thrombocytopenia correlates with decreased TGF-β1, and decreased TGF-β1 correlates with cytokine/ chemokine changes associated with increased disease severity and death. Thrombocytopenia may mediate disease severity in malaria through reduced TGF-β1-mediated regulation of cytokines associated with severe disease.
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Authors | Benjamin R Hanisch, Paul Bangirana, Robert O Opoka, Gregory S Park, Chandy C John |
Journal | The Pediatric infectious disease journal
(Pediatr Infect Dis J)
Vol. 34
Issue 7
Pg. 783-8
(Jul 2015)
ISSN: 1532-0987 [Electronic] United States |
PMID | 25886788
(Publication Type: Journal Article, Research Support, N.I.H., Extramural)
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Chemical References |
- Cytokines
- Transforming Growth Factor beta1
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Topics |
- Child
- Child, Preschool
- Cohort Studies
- Cytokines
(blood)
- Female
- Humans
- Malaria, Cerebral
(complications, pathology)
- Malaria, Falciparum
(complications, pathology)
- Male
- Thrombocytopenia
(pathology)
- Transforming Growth Factor beta1
(blood)
- Uganda
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