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Savoldi F, Laffranchi L, Zotti F, Dalessandri D, Stretti C, Salgarello S, Bonetti S, Visconti L, Genna F, Paganelli C. In vitro micromechanical characterization of porcine periodontal ligament. Dent Mater 2014. [DOI: 10.1016/j.dental.2014.08.260] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Garzon E, Genna F, Bosseno MF, Simony-La Fontaine J, Radal M, Sereno D, Mathieu-Daude F, Ouaissi A, Brenière SF. Differential infectivity and immunopathology in murine experimental infections by two natural clones belonging to theTrypanosoma cruziI lineage. Parasitology 2005; 131:109-19. [PMID: 16038402 DOI: 10.1017/s003118200400722x] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Immunopathology of Chagas' disease in Balb/c mice infected with 2Trypanosoma cruziclones, belonging to theT. cruziI lineage and presenting differentin vitrovirulence (P/209 cl1>SO34 cl4) was compared. In the acute phase, evading mechanisms such as parasite-induced lymphocyte polyclonal activation and T cell immunosuppression were higher in mice infected with the clone giving a higher parasitaemia (P/209 cl1). A similar increase of non-specific isotypes was observed in both infections with IgG2a prevalence. Interestingly, CD8+ cell hypercellularity and lymphocyte immunosuppression were observed during the chronic phase (245 days post-infection) in mice infected by the most virulent clone. In the same way, the parasite-specific antibody response was more intense in P/209 cl1-infected mice over the acute phase. During the chronic phase this response remarkably dropped down in SO34 cl4-infected mice exclusively. Finally, P/209 cl1-infected mice presented a more severe inflammation and tissue damage in heart and quadriceps than SO34 cl4-infected mice. This comparative study showed differences between the two clones: a higher virulencein vivobeing clearly associated with a greater ability to induce evasion mechanisms and severe tissue damage.
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Affiliation(s)
- E Garzon
- Institut de Recherche pour le Développement, IRD, UR 008 Pathogénie et Epidémiologie des Trypanosomatidés, 911 Av. Agropolis, BP 64501, 34394 Montpellier Cedex 5, France
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