Non-specific immunosuppression in experimental cryptococcosis in rats
✍ Scribed by Diana T. Masih; Héctor R. Rubinstein; Claudia E. Sotomayor; María E. Ferro; Clelia M. Riera
- Publisher
- Springer Netherlands
- Year
- 1986
- Tongue
- English
- Weight
- 436 KB
- Volume
- 94
- Category
- Article
- ISSN
- 0301-486X
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✦ Synopsis
The delayed type hypersensitivity response to human serum albumin (HSA) of rats infected intraperitoneally with 107 viable C. neoformans cells, and 7 days after, immunized with human serum albumin was significantly diminished (p < 0.05) when compared with the response observed in rats immunized with human serum albumin and non infected. The spleen mononuclear cells from suppressed rats transferred to normal syngeneic recipients of the same sex suppress the afferent phase of the response (p < 0.02) suggesting that cells present in the spleen might be one of the responsible mechanisms for the suppression to nonrelated antigens in infected animals.
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Using a rat model, we have previously demonstrated that infection with Cryptococcus neoformans can trigger the production of a series of suppressor cells that specifically inhibit the cell-mediated immune response to a non-related antigen, human serum albumin (HSA), that has been injected 7 days aft
The influence of lymphocytes on the modulation of macrophage functions in altered immune states induced by Cryptococcus neoformans infection in rats has been investigated. In this report we observed a decrease of 'in vitro' phagocytic activity by peritoneal cells (PC) from rats that received T suppr
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