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A reliable method for reconstituting thymectomized, lethally irradiated guinea pigs with bone marrow cells
Journal of Immunological Methods
|May 25, 1984
Summary
Researchers established a method to reconstitute thymectomized guinea pigs using bone marrow cells. This method, requiring specific antibiotic and acidified water treatments, achieved high survival rates but resulted in impaired immune responses.
Area of Science:
- Immunology
- Hematology
- Animal Models
Background:
- Thymectomy and lethal irradiation severely compromise the immune system.
- Reconstitution of the immune system is crucial for survival after such procedures.
Purpose of the Study:
- To develop a reliable method for reconstituting thymectomized, lethally irradiated guinea pigs.
- To assess the immune function of reconstituted animals.
Main Methods:
- Adult guinea pigs underwent thymectomy and lethal irradiation.
- Administration of syngeneic bone marrow cells (2.5-10 X 10(7)) for reconstitution.
- Treatment with Gentamycin sulfate (5 mg/kg) and acidified drinking water (pH 2.5) was employed.
Main Results:
- Survival rates of 46-100% were achieved in treated animals.
- Optimal results required specific antibiotic and acidified water regimens.
- Reconstituted guinea pigs exhibited impaired delayed cutaneous hypersensitivity and proliferative responses.
Conclusions:
- A reliable method for immune reconstitution in thymectomized, irradiated guinea pigs was developed.
- While survival was achieved, the reconstituted immune system showed functional deficits, particularly in T-cell mediated immunity.