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Tytuł oryginału: Effects of immunomodulators on acute Trypanosoma cruzi infection in mice.
Autorzy: Oz Helieh S., Hughes Walter T., Thomas Elaine K., McClain Craig J.
Źródło: Med. Sci. Monitor 2002: 8 (6) s.BR208-BR211, il., tab., bibliogr. 14 poz.
Sygnatura GBL: 313,278

Typ dokumentu:
  • praca doświadczalna
  • tytuł obcojęzyczny

    Wskaźnik treści:
  • zwierzęta
  • myszy

    Streszczenie angielskie: Patients who recover from acute trypanosomiasis may succumb to chronic Chagas' disease later in life due to age related immunosuppression, immune system disorders such as AIDS, or during periods of immunosuppressive therapy for organ transplantation. In this study, effects of immunomodultors with diverse properties were examined on the course of an acute and lethal Trypanosoma cruzi infection. ICR (Swiss) mice inoculated with Tulahuen (lethal) strain of T. cruzi were treated with 6 different immunomodulators and the course of infection was studied. Tacrolimus (FK-506) and dexamethasone increased parasitemia in mice when compared to infected untreated animals. Mycophenolate mofetil (RS-61443) ana recombinant interleukin-15 (IL-15) treatment decreased the number of parasites but had no effect on animal survival. In contrast, compound L-685-818 (tacrolius analog) and CD40 ligand (CD40L), provided protection against lethal infection. Mice that survived initial infection were all protected against reinfection. This study demonstrates the dangers of immunosuppression with tacrolimus and dexamethasone in T. cruzi infected subjects. While mycophenolate did not exacerbate the infection, our data suggest potential therapeutic applications for L-685-818 and CD40 ligand in trypanosomiasis.

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