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Related Experiment Videos

Evaluation of human cellular immune function in echinococcosis.

C Wattal1

  • 1Department of Microbiology, Sher-i-Kashmir Institute of Medical Sciences, Srinagar.

The Indian Journal of Medical Research
|May 1, 1990
PubMed
Summary

Patients with hydatid disease show suppressed cellular immunity. Hydatid antigen inhibits immune cell response in all subjects, indicating a potential immunosuppressive effect in hydatidosis.

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Area of Science:

  • Immunology
  • Parasitology
  • Cellular Biology

Background:

  • Hydatid disease, caused by Echinococcus granulosus, poses a significant global health challenge.
  • Understanding the host immune response is crucial for diagnosis and treatment of parasitic infections.
  • Cellular immunity plays a vital role in controlling parasitic diseases, but its specific role in hydatidosis requires further elucidation.

Purpose of the Study:

  • To investigate the specific and nonspecific cellular immune status in individuals with hydatid disease.
  • To assess the effect of hydatid antigen on in vitro lymphocyte proliferation.
  • To compare immune responses between patients with hydatid disease, non-hydatid disease, and healthy controls.

Main Methods:

  • In vitro blast transformation assay was employed to evaluate cellular immune function.
  • Forty-nine individuals were studied: 11 with hydatid disease, 23 with non-hydatid disease, and 15 healthy controls.
  • Lymphocyte proliferation was measured in response to phytohemagglutinin (PHA) and hydatid antigen.

Main Results:

  • Patients with hydatid disease exhibited suppressed cellular immune function to PHA compared to controls.
  • Hydatid antigen inhibited in vitro blast transformation at concentrations of 0.1 microgram protein/ml and above.
  • This inhibitory effect of hydatid antigen was observed across all study groups, regardless of hydatidosis status.

Conclusions:

  • Hydatid disease is associated with impaired cellular immune responses.
  • Hydatid antigen demonstrates immunosuppressive properties, inhibiting lymphocyte blastogenesis.
  • The findings suggest a potential mechanism for immune evasion by the parasite in hydatidosis.

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