Impaired systemic production of prostaglandin E2 in children with cerebral malaria.

Published

Journal Article

Prostaglandins (PGs) are important mediators of macrophage activity, vascular permeability, fever, erythropoiesis, and proinflammatory responses to infection. Our recent studies have shown that plasma levels of bicyclo-PGE2 (a stable end product of PGE2 metabolism) and leukocyte cyclooxygenase (COX)-2 gene expression are suppressed in children with malarial anemia. Since the role of PGs as immunomodulators of human cerebral malaria (CM) has not been examined, we investigated urinary levels of bicyclo-PGE2/creatinine in children with varying clinical outcomes of CM. Among parasitemic children, those with asymptomatic parasitemia had the highest levels of bicyclo-PGE2/creatinine, whereas those with CM had significantly lower levels of bicyclo-PGE2. Systemic levels of bicyclo-PGE2/creatinine were not significantly associated with parasitemia, hemoglobin levels, or levels of the PG-regulatory cytokine tumor necrosis factor- alpha but were positively correlated with levels of interleukin-10. The results presented here show that impaired systemic production of PGE2 is associated with adverse outcomes of CM, whereas elevated levels of PGE2 in asymptomatic parasitemia suggest a potential role for PGs in protective immunity.

Full Text

Duke Authors

Cited Authors

  • Perkins, DJ; Hittner, JB; Mwaikambo, ED; Granger, DL; Weinberg, JB; Anstey, NM

Published Date

  • May 2005

Published In

Volume / Issue

  • 191 / 9

Start / End Page

  • 1548 - 1557

PubMed ID

  • 15809915

Pubmed Central ID

  • 15809915

Electronic International Standard Serial Number (EISSN)

  • 1537-6613

International Standard Serial Number (ISSN)

  • 0022-1899

Digital Object Identifier (DOI)

  • 10.1086/429332

Language

  • eng