Abstract
Cutaneous leishmaniosis (CL) is one of the important neglected tropical diseases caused by Leishmania spp. such as L. major, L. tropica in the Old World. In recent years, some reports of treatment failure in patients with CL have been reported worldwide. Therefore, in this study, we assessed LmHSP 83, LmTRYR, and LmTRYP gene expressions in treatment failure clinical isolates of L. major. After sampling from the cutaneous lesions, DNA was extracted and then genera verification and species identification was done using ITS1-PCR-RFLP method. A part of each sample was used in order to RNA extraction and cDNA synthesized. LmHSP 83, LmTRYR, and LmTRYP gene expressions were assessed using SYBR Green real-time PCR. The treatment failure clinical isolates had the mean expression of 5.55±1.67, 247.024±23.54, and 1.204±2.14 for LmHSP 83, LmTRYR, and LmTRYP , respectively less than the same genes in treatment response isolates (P=0.001). This study recommended the other mechanisms may involve in response to treatment in treatment failure clinical isolates of L. major.
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