The Journal of antimicrobial chemotherapy · 2009
Combined topical paromomycin and oral miltefosine treatment of mice experimentally infected with Leishmania (Leishmania) major leads to reduction in both lesion size and systemic parasite burdens.
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Aguiar Marta Gontijo, Silva Diana Lara, Nunan Fernando Antônio, Nunan Elzíria Aguiar, Fernandes Ana Paula, Ferreira Lucas Antônio Miranda
Аннотация
OBJECTIVES: This study aimed to investigate the activity of the combination of topical paromomycin gel and oral miltefosine for the treatment of experimental cutaneous leishmaniasis caused by Leishmania (Leishmania) major.
METHODS: The efficacy of the combination, evaluated by measuring lesion size and parasite burden in the skin and spleen, was assessed in BALB/c mice infected by L. (L.) major. Miltefosine was administered orally at 25 mg/kg/day for 10 days, while 10% paromomycin gel was applied topically twice a day for 10 days.
RESULTS: Treatment of the experimentally infected animals with topical paromomycin + oral miltefosine combination induced a statistically significant reduction in lesion size and parasite burden in the skin, with complete healing of ulcers, as compared with those treated with oral miltefosine or placebo. Furthermore, topical paromomycin + oral miltefosine combination was as effective as topical paromomycin alone to reduce the lesion size and parasite load in lesions. However, the efficacy of the combination was significantly higher than that observed for the other treatments, including topical paromomycin alone, in reducing the parasite burden in spleen.
CONCLUSIONS: The combination of topical paromomycin gel and oral miltefosine provides an enhanced efficacy in the treatment of L. (L.) major-infected mice, thus presenting a significantly higher activity than that observed for the monotherapeutic regimens.
METHODS: The efficacy of the combination, evaluated by measuring lesion size and parasite burden in the skin and spleen, was assessed in BALB/c mice infected by L. (L.) major. Miltefosine was administered orally at 25 mg/kg/day for 10 days, while 10% paromomycin gel was applied topically twice a day for 10 days.
RESULTS: Treatment of the experimentally infected animals with topical paromomycin + oral miltefosine combination induced a statistically significant reduction in lesion size and parasite burden in the skin, with complete healing of ulcers, as compared with those treated with oral miltefosine or placebo. Furthermore, topical paromomycin + oral miltefosine combination was as effective as topical paromomycin alone to reduce the lesion size and parasite load in lesions. However, the efficacy of the combination was significantly higher than that observed for the other treatments, including topical paromomycin alone, in reducing the parasite burden in spleen.
CONCLUSIONS: The combination of topical paromomycin gel and oral miltefosine provides an enhanced efficacy in the treatment of L. (L.) major-infected mice, thus presenting a significantly higher activity than that observed for the monotherapeutic regimens.