Journal
EXPERIMENTAL PARASITOLOGY
Volume 134, Issue 1, Pages 68-75Publisher
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.exppara.2013.01.022
Keywords
Leishmania aethiopica; Macrophage; IC50; In vitro model; Susceptibility; Antileishmanial drugs
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Funding
- Graduate School of Addis Ababa University
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Cutaneous Leishmaniasis (CL) caused by Leishmania aethiopica is a public health and social problem with a sequel of severe and mutilating skin lesions. It is manifested in three forms: localized CL (LCL), mucosal CL (MCL) and diffuse CL (DCL). Unresponsiveness to sodium stibogluconate (Sb-V) is common in Ethiopian CL patients. Using the amastigote-macrophage in vitro model the susceptibility of 24 clinical isolates of L. aethiopica derived from untreated patients was investigated. Eight strains of LCL, 9 of MCL, and 7 of DCL patients together with a reference strain (MHOM/ET/82/117/82) were tested against four antileishmanial drugs: amphotericin B, miltefosine, Sb-V and paromomycin. In the same order of drugs, IC50 (mu g/ml +/- SD) values for the 24 strains tested were 0.16 +/- 0.18, 5.88 +/- 4.79, 10.23 +/- 8.12, and 13.63 +/- 18.74. The susceptibility threshold of isolates originating from the 3 categories of patients to all 4 drugs was not different (p > 0.05). Maximal efficacy was superior for miltefosine across all the strains. Further susceptibility test could validate miltefosine as a potential alternative drug in cases of sodium stibogluconate treatment failure in CL patients. (C) 2013 Elsevier Inc. All rights reserved.
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