Mirahmadi H, Rezaee N, Mehravaran A, Heydarian P, Raeghi S. Detection of species and molecular typing of Leishmania in suspected patients by targeting cytochrome
b gene in Zahedan, southeast of Iran.
Vet World 2018;
11:700-705. [PMID:
29915511 PMCID:
PMC5993770 DOI:
10.14202/vetworld.2018.700-705]
[Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2017] [Accepted: 04/23/2018] [Indexed: 11/16/2022] Open
Abstract
Aim:
Cutaneous leishmaniasis (CL) is one of the most important health problems that are capable of involving both tropical and subtropical areas, especially in Iran. This cross-sectional study aimed to differentiate the species that are able to cause CL in Zahedan city by polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) method.
Materials and Methods:
It was conducted on 145 suspected CL patients in Zahedan city between 2014 and 2016. The smears were initially prepared, air-dried, fixed with absolute methanol, and stained with 10% Giemsa. Then, we examined the stained samples by a light microscope under 1000× magnifications. PCR assay targeted cytochrome b(cyt b) gene using LCBF1 and LCBR2 primers and the products digested by Ssp1 enzymes.
Results:
From 145 suspected CL patients, 76 (52.4%) were positive in microscopic examination. In addition, we detected gene of interest (cyt b) in 98 (67.5%). The results of PCR-RFLP indicated that 53/98 (54%) cases were Leishmania major and 45/98 (46%) were Leishmania tropica, and the main species in these areas was L. major.
Conclusion:
We concluded that the microscopic examination is not sensitive enough and is not able to distinguish between different Leishmania species. Instead, molecular methods like PCR-RFLP can be appropriately used with promising results.
Collapse