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Mucosal and systemic cellular immune responses induced by Toxoplasma gondii antigens in cyst orally infected mice.
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- Author(s): Chardès T;Chardès T; Velge-Roussel F; Mevelec P; Mevelec MN; Buzoni-Gatel D; Bout D
- Source:
Immunology [Immunology] 1993 Mar; Vol. 78 (3), pp. 421-9.- Publication Type:
Journal Article; Research Support, Non-U.S. Gov't- Language:
English - Source:
- Additional Information
- Source: Publisher: Blackwell Scientific Publications Country of Publication: England NLM ID: 0374672 Publication Model: Print Cited Medium: Print ISSN: 0019-2805 (Print) Linking ISSN: 00192805 NLM ISO Abbreviation: Immunology Subsets: MEDLINE
- Publication Information: Original Publication: Oxford : Blackwell Scientific Publications
- Subject Terms: Antigens, Protozoan/*immunology ; Lymphocyte Activation/*immunology ; T-Lymphocytes/*immunology ; Toxoplasma/*immunology ; Toxoplasmosis, Animal/*immunology; Animals ; Cells, Cultured ; Cytokines/metabolism ; Female ; Immunity, Cellular ; Lymph Nodes/immunology ; Mesentery ; Mice ; Mice, Inbred Strains ; Peyer's Patches/immunology ; Spleen/immunology
- Abstract: This study was performed to determine the T-cellular immune responses following Toxoplasma gondii oral infection and to assess further toxoplasma antigens on their ability to stimulate in vitro mucosal and systemic T-cell immunity. Parasite-specific cellular immune responses in Peyer's patches (PP), in mesenteric lymph nodes (MLN) and in spleen (SPL) were investigated using a lymphoblastic transformation test following oral infection of mice with strain 76K cysts of T. gondii. An early toxoplasma sonicate-induced mucosal T-cell proliferation occurred in MLN and PP with a peak responsiveness on day 6 post-infection (PI) and rapidly reached background levels on day 7 PI in PP and on day 8 PI in mesenteric lymph nodes. A later splenic cellular blastogenesis was observed from day 28 PI and persisted throughout the experiment (day 91). At the time of T-cell proliferation, FACS analyses revealed a decrease in the relative percentages of CD4+ and CD8+ T cells with a predominance of CD8+ lymphocytes which leads to an inversion of the CD4/CD8 ratios. We found that CBA/J is a high responder mouse strain in the induction of mesenteric and splenic T-lymphocyte blastogenesis compared to the intermediate responder BALB/c and low responder C57BL/6. Toxoplasma gondii antigens SAG1 (30,000 MW) and GRA4 (40,000-41,000 MW), which are known to induce locally IgA antibodies, are shown to stimulate primed mucosal T lymphocytes from CBA/J and BALB/c mice whereas no proliferation was demonstrated with C57BL/6 T cells. 229-242 peptide, derived from the deduced amino acid sequence of GRA4, only induces detectable proliferation of primed-CBA/J T lymphocytes. Following oral experimental infection, the in vitro mesenteric response to a toxoplasma sonicate is dominated by a Th2-type cytokine pattern whereas a predominant Th1 cytokine response is observed in the spleen. Finally, in vitro stimulation of mesenteric T cells with the three defined toxoplasma antigens resulted in secretion of interleukin-5 (IL-5) and IL-6 (except for SAG1) and interferon-gamma (IFN-gamma) whereas no detectable IL-2 or IL-4 was observed.
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Immunology. 1982 Jun;46(2):443-50. (PMID: 6979507) - Accession Number: 0 (Antigens, Protozoan)
0 (Cytokines) - Publication Date: Date Created: 19930301 Date Completed: 19930527 Latest Revision: 20220330
- Publication Date: 20240104
- Accession Number: PMC1421842
- Accession Number: 8478024
- Source:
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