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Related Experiment Videos

Interrelationship between schistosomiasis and concomitant diseases.

P P Chieffi1

  • 1Instituto de Medicina Tropical de São Paulo, Brasil.

Memorias Do Instituto Oswaldo Cruz
|January 1, 1992
PubMed
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Schistosoma mansoni coinfections with bacteria, helminths, protozoa, and viruses alter disease presentation. Understanding these interactions is crucial for effective treatment of schistosomiasis and co-existing infections.

Area of Science:

  • Parasitology
  • Immunology
  • Infectious Diseases

Background:

  • Parasitic infections often involve complex interactions between different pathogens within a single host.
  • Concomitant infections can lead to disease outcomes that differ significantly from individual infections.
  • Schistosoma mansoni infections are known to interact with a variety of other pathogens.

Purpose of the Study:

  • To review and discuss the biological literature on concomitant infections involving Schistosoma mansoni.
  • To explore interactions between S. mansoni and enterobacteriaceae, various helminths, protozoa, and hepatitis B virus.
  • To examine how factors like malnutrition and neoplasias influence the host's response to S. mansoni.

Main Methods:

  • Literature review and synthesis of existing research findings.

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  • Analysis of documented cases and experimental studies on coinfections.
  • Discussion of the immunological and pathological consequences of combined infections.

    • Main Results:

    • Coinfection with S. mansoni and enterobacteriaceae modifies disease characteristics.
    • Interactions with helminths (Ascaris lumbricoides, Ancylostomids, Toxocara canis, Hymenolepis spp.) and protozoa (Trypanosoma cruzi, T. brucei, Toxoplasma gondii, Plasmodium berghei) lead to altered host responses.
    • Hepatitis B virus coinfection with S. mansoni results in prolonged viremia and exacerbated liver damage.
    • Malnutrition and neoplasias can significantly impact the host's susceptibility and response to schistosomiasis.

    Conclusions:

    • The presence of multiple pathogens, including S. mansoni, significantly impacts disease pathology and host immunity.
    • Understanding these complex interactions is vital for developing comprehensive treatment strategies for parasitic diseases.
    • Further research is needed to elucidate the precise mechanisms underlying these synergistic and antagonistic interactions.