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Is immuno-protection against Toxoplasma strain specific?
M M Abdul-Fattah1, M M Sanad, R A Darwish
1Department of Parasitology, Faculty of Medicine, Zagazig University, Egypt.
Journal of the Egyptian Society of Parasitology
|April 1, 1992
Summary
Researchers identified distinct Toxoplasma gondii strains in two Egyptian villages. These different strains may explain recurrent toxoplasmosis infections in humans, highlighting the importance of strain diversity in disease.
Area of Science:
- Veterinary Parasitology
- Infectious Diseases
- Immunology
Background:
- Toxoplasma gondii is a widespread protozoan parasite.
- Recurrent Toxoplasma infections pose a public health concern.
- Understanding parasite strain diversity is crucial for disease management.
Purpose of the Study:
- To investigate the presence of different Toxoplasma gondii strains in feline feces from two distinct Egyptian localities.
- To correlate observed differences in parasite strains with their pathogenic effects and immune responses in a mouse model.
Main Methods:
- Isolation of Toxoplasma gondii strains from feline fecal samples collected in Rommana and El-Ekhewa.
- Pathogenicity and immune response assessment using Swiss Webster mice.
Main Results:
- Two distinct Toxoplasma gondii strains were successfully isolated.
- The isolated strains exhibited significantly different pathogenic effects in mice.
- Differential immune responses were observed in mice infected with the distinct strains.
Conclusions:
- The study suggests the existence of at least two different strains of Toxoplasma gondii in the investigated areas.
- Strain variability in Toxoplasma gondii could be a contributing factor to repeated human infections.
- Further research into parasite strain diversity is warranted to understand and control toxoplasmosis transmission.