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Related Experiment Videos

Nitric oxide bioavailability in malaria.

Peter Sobolewski1, Irene Gramaglia, John Frangos

  • 1La Jolla Bioengineering Institute, 505 Coast Boulevard, Suite 405, La Jolla, CA 92037, USA.

Trends in Parasitology
|July 26, 2005
PubMed
Summary
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Nitric oxide (NO) plays a controversial role in malaria. This study suggests low NO bioavailability contributes to severe malaria pathogenesis, indicating that restoring NO levels could be an effective anti-disease therapy.

Area of Science:

  • Malariology
  • Immunology
  • Vascular Biology

Background:

  • Severe Plasmodium falciparum malaria pathogenesis requires detailed cellular and molecular understanding.
  • Nitric oxide (NO) is a potential therapeutic target, but its role in malaria is debated.
  • Proposed roles include parasite killing versus host damage (anemia, neuronal dysfunction).

Purpose of the Study:

  • To investigate the controversial role of nitric oxide (NO) in Plasmodium falciparum malaria.
  • To evaluate the hypothesis that limited NO bioavailability contributes to malarial pathogenesis.
  • To explore NO restoration as a potential anti-disease therapy.

Main Methods:

  • Review of existing evidence on NO production and scavenging during malaria.
  • Consideration of NO scavenging by elevated plasma hemoglobin and superoxide.

Related Experiment Videos

  • Analysis of NO's impact on immune, endothelial, and coagulation systems.

    • Main Results:

    • Evidence suggests NO production may be limited, not elevated, during malaria.
    • Elevated cell-free hemoglobin and superoxide significantly scavenge NO.
    • Low NO bioavailability may drive pathologic immune, endothelial, and coagulation activation.

    Conclusions:

    • Contrary to some hypotheses, NO may be deficient in malaria.
    • Restoring NO bioavailability could be a promising therapeutic strategy.
    • Targeting NO levels offers a potential adjunct therapy for severe malaria.