In vivo regulation of humoral and cellular immune responses of mice by a synthetic adjuvant, N-acetyl-muramyl-L-alanyl-D-isoglutamine, muramyl dipeptide for MDP. |
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Authors: | C Leclerc D Juy E Bourgeois L Chedid |
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Affiliation: | Groupe de Recherche No. 31 du C.N.R.S., Immunothérapie Expérimentale, Institut Pasteur, 28, rue du Dr. Roux, 75724 Paris Cedex 15, France |
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Abstract: | In vitro immunizations by T-dependent or T-independent antigens can be modulated by muramyl dipeptide (MDP). Enhancement or suppression of the antibody responses was observed according to the spleen-cell concentrations. Data presented here show that MDP can also suppress the immune response in vivo if used at relatively high dosage and injected before the antigen (SRBC). In vitro generation of cytotoxic T-lymphocyte recovered from mice which had been treated by MDP under the same experimental conditions was also decreased whereas macrophage cytostatic activity was not affected. By MDP pretreatment, a significant increase of antibody-dependent cell-mediated cytotoxicity was observed. |
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