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CD4+ T cells participate in the nephropathy of canine visceral leishmaniasis BJMBR
Costa,F.A.L.; Guerra,J.L.; Silva,S.M.M.S.; Klein,R.P.; Mendonça,I.L.; Goto,H..
Renal involvement in visceral leishmaniasis (VL) is very frequent. The renal lesions of humans and dogs are similar but their pathogenesis has not been clearly elucidated. There is growing evidence that the cellular immune response is involved in the pathogenesis of immunologically mediated glomerulonephritis. Since T cells could participate in the pathogenesis of nephropathy, in the present study we investigated the possible involvement of CD4+ and CD8+ T cells in the nephropathy of canine VL. Six dogs naturally infected with Leishmania (Leishmania) chagasi from the endemic area in the Northeast of Brazil, the town of Teresina in the State of Piauí, were studied. An expressive inflammatory infiltrate of CD4+ T cells both in glomeruli and in interstitium...
Tipo: Info:eu-repo/semantics/other Palavras-chave: Visceral leishmaniasis; Dog; Leishmania (Leishmania) chagasi; Nephropathy; Immunoglobulin; T cells.
Ano: 2000 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2000001200009
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Effects of diazepam on Mycobacterium bovis-induced infection in hamsters BJMBR
Righi,D.A.; Pinheiro,S.R.; Guerra,J.L.; Palermo-Neto,J..
The in utero exposure of hamsters to low doses of diazepam results in impaired host defense against Mycobacterium bovis during adulthood. Delayed developmental immunotoxicity, however, represents a specific situation that might not be general. The present experiment was undertaken to investigate the effects of diazepam on hamster resistance to M. bovis using adult animals. The effects of diazepam treatment on serum cortisol levels were also studied. Adult hamsters (N = 10 for each group) were treated with diazepam (E1 = 1.0, E2 = 2.0 or E3 = 3.0 mg kg-1 day-1 subcutaneously) or with control solution (C) for 30 days. Seven days after the beginning of the treatment, the animals received identical inoculum concentrations of M. bovis. Hamsters treated with the...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Mycobacterium bovis; Host resistance; Macrophages; Diazepam; Immune system.
Ano: 1999 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X1999000900014
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