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Related Experiment Videos

Postprandial lymphatic flux and malaria

E Deharo1, F Coquelin, A Chabaud

  • 1Laboratoire de Biologie parasitaire, Ecole Pratique des Hautes Etudes, Paris.

Parasite (Paris, France)
|December 1, 1995
PubMed
Summary

Starved mice showed no detectable malaria infection after inoculation with Plasmodium yoelii nigeriensis. However, mice fed 2 hours prior had a patent infection, suggesting a role for lymphatic flow in merozoite transport.

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Area of Science:

  • Parasitology
  • Immunology
  • Physiology

Background:

  • Plasmodium yoelii nigeriensis causes malaria in mice.
  • Nutritional status can influence infection dynamics.
  • Lymphatic system's role in pathogen transport is under investigation.

Purpose of the Study:

  • To investigate the impact of feeding status on Plasmodium yoelii nigeriensis infection.
  • To explore the potential role of lymphatic flow in the early dissemination of malaria parasites.

Main Methods:

  • Intra-peritoneal inoculation of Plasmodium yoelii nigeriensis infected blood in mice.
  • Comparison of infection levels in starved mice versus mice fed 2 hours prior to inoculation.
  • Monitoring malarial infection detectability at 24 hours post-inoculation.

Main Results:

  • Malarial infection was non-detectable in most starved mice 24 hours post-inoculation.
  • Patent malarial infection was observed in mice fed 2 hours before inoculation.
  • Suggests a rapid dissemination mechanism in fed mice.

Conclusions:

  • Host feeding status significantly impacts early malaria parasite detectability.
  • Post-feeding lymphatic flow is hypothesized to facilitate the transport of latent merozoites into circulation.
  • Further research is needed to elucidate the precise mechanisms of parasite dissemination via lymphatic pathways.

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