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Revista do Instituto de Medicina Tropical de São Paulo

On-line version ISSN 1678-9946

Abstract

PANCERA, Christiane Finardi; ALVES, Adriana Leal; PASCHOALOTTI, Maria Aparecida  and  CHIEFFI, Pedro Paulo. Effect of wide spectrum anti-helminthic drugs upon Schistosoma mansoni experimentally infected mice. Rev. Inst. Med. trop. S. Paulo [online]. 1997, vol.39, n.3, pp.159-164. ISSN 1678-9946.  http://dx.doi.org/10.1590/S0036-46651997000300007.

Mebendazole, albendazole, levamisole and thiabendazole are well known as active drugs against several nematode species, and against cestodes as well, when the first two drugs are considered. None of the drugs have proven activity, however, against trematodes. We tested the effect of these drugs on the fecal shedding of schistosome eggs and the recovering of adult schistosomes, after portal perfusion in Schistosoma mansoni experimentally infected mice. Balb/c mice infected with 80 S. mansoni cercariae were divided into three groups, each in turn subdivided into four other groups, for each tested drug. The first group was treated with each one of the studied drugs 25 days after S. mansoni infection; the second group was submitted to treatment with each one of the drugs 60 days after infection. Finally, the third group, considered as control, received no treatment. No effect upon fecal shedding of S. mansoni eggs and recovering of schistosomes after portal perfusion was observed when mice were treated with either mebendazole or albendazole. Mice treated with either levamisole or thiabendazole, on the other hand, showed a significant reduction in the recovering of adult schistosomes after portal perfusion, mainly when both drugs were given during the schistosomula evolution period, i.e., 25 days after cercariae penetration, probably due to unspecific immunomodulation

Keywords : Schistosomiasis; Schistosoma mansoni; Mebendazole; Albendazole; Levamisole; Thiabendazole.

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