Glucantime resistant Leishmania promastigotes are sensitive to pentostam

Growth inhibition in vitro tests were used to study the susceptibility to pentostam of different Leishmania strains involved in cutaneous and mucocutaneos leishmaniasis - one glucantime sensitive strain, three naturally glucantime resistant strains and one glucantime resistant line developed by in v...

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Bibliographic Details
Main Authors: Elizabeth Spangler Andrade Moreira, Juliana Becattini Guerra, Maria de Lourdes Petrillo-Peixoto
Format: Article in Journal/Newspaper
Language:English
Published: Sociedade Brasileira de Medicina Tropical (SBMT) 1992
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Online Access:https://doaj.org/article/1df83968975d47888bdc35fe8b344448
Description
Summary:Growth inhibition in vitro tests were used to study the susceptibility to pentostam of different Leishmania strains involved in cutaneous and mucocutaneos leishmaniasis - one glucantime sensitive strain, three naturally glucantime resistant strains and one glucantime resistant line developed by in vitro drug exposure. Contrasting with the high degree , of glucantime resistance, all strains were sensitive to pentostam. These differences suggest that there is some relationship between chemical structure and in vitro activity for these antimonial compounds. These data justify a clinical re-evaluation to compare therapeutic efficacy of glucantime and pentostam in the treatment of leishmaniasis. Diferentes amostras de Leishmania foram analisadas quanto à susceptibilidade in vitro ao pentostam - uma cepa de L. (V) braziliensis considerada sensível ao glucantime, três cepas (duas L. (V) braziliensis e uma L. (L) amazonensis) consideradas naturalmente resistentes ao glucantime, uma linhagem resistente (L. (V) guyanensis) selecionada in vitro pela exposição em alta concentração de droga. A elevada sensibilidade destas amostras em contraposição à resistência observada para o glucantime sugere existir relação entre a estrutura química e a atividade destes compostos. Estes dados indicam a necessidade de ima avaliação comparativa de atividade clínica do pentostam e do glucantime no tratamento da leishmaniose.