Blood mononuclear cell nitric oxide production and plasma cytokine levels in healthy gabonese children with prior mild or severe malaria.

Published

Journal Article

Plasmodium falciparum malaria is an important cause of morbidity and mortality in children. Factors that determine the development of mild versus severe malaria are not fully understood. Since host-derived nitric oxide (NO) has antiplasmodial properties, we measured NO production and NO synthase (NOS) activity in peripheral blood mononuclear cells (PBMC) from healthy Gabonese children with a history of prior mild malaria (PMM) or prior severe malaria (PSM) caused by P. falciparum. The PMM group had significantly higher levels of NOS activity in freshly isolated PBMC and higher NO production and NOS activity in cultured PBMC. The investigation of NO-modulating cytokines (e.g., interleukin 12, gamma interferon, tumor necrosis factor alpha [TNF-alpha], and transforming growth factor beta1) as an explanation for differing levels of NOS activity revealed that plasma levels of TNF-alpha were significantly higher in the PSM group. Our results suggest that NOS/ NO and TNF-alpha are markers for prior disease severity and important determinants of resistance to malaria.

Full Text

Duke Authors

Cited Authors

  • Perkins, DJ; Kremsner, PG; Schmid, D; Misukonis, MA; Kelly, MA; Weinberg, JB

Published Date

  • September 1999

Published In

Volume / Issue

  • 67 / 9

Start / End Page

  • 4977 - 4981

PubMed ID

  • 10456963

Pubmed Central ID

  • 10456963

International Standard Serial Number (ISSN)

  • 0019-9567

Language

  • eng

Conference Location

  • United States