Author:
Valdez Rodrigo Hinojosa,Tonin Lilian Tatiani Düsman,Ueda-Nakamura Tânia,Silva Sueli Oliveira,Dias Filho Benedito Prado,Kaneshima Edilson Nobuyoshi,Yamada-Ogatta Sueli Fumie,Yamauchi Lucy Megumi,Sarragiotto Maria Helena,Nakamura Celso Vataru
Abstract
ABSTRACTAmerican trypanosomiasis, or Chagas' disease, is caused byTrypanosoma cruziand affects around 15 million people throughout the American continent. The available treatment is based on two nitroheterocyclic drugs, nifurtimox and benznidazole, both only partially effective and toxic. In this context, new drugs must be found. In our previous work, the tetrahydro-β-carboline compoundN-butyl-1-(4-dimethylamino)phenyl-1,2,3,4-tetrahydro-β-carboline-3-carboxamide, named C4, showed a potentin vitrotrypanocidal effect. The goal of this study was to evaluate thein vitroandin vivotrypanocidal effects of the compound C4 associated with other drugs (benznidazole, ketoconazole, and amphotericin B). For this, we used the checkerboard technique to analyze the effect of combinations of C4 reference drugs. C4 was assayed in a murine model alone as well as in association with benznidazole. We also evaluated the parasitemia, mortality, weight, and presence of amastigote nests in cardiac tissue. A synergic effect of C4 plus benznidazole against epimastigote and trypomastigote forms was observedin vitro, and in the murine model, we observed a substantial reduction in parasitemia levels and lowered mortality rates. These findings encourage supplementary investigations of carboline compounds as potential new trypanocidal drugs.
Publisher
American Society for Microbiology
Subject
Infectious Diseases,Pharmacology (medical),Pharmacology
Cited by
36 articles.
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