Sharifi-Rad Mehdi, Dabirzadeh Mansour, Sharifi Iraj, Babaei Zahra
Department of Medical Parasitology, Zabol University of Medical Sciences, Zabol, Iran; Department of Medical Parasitology, Kerman University of Medical Sciences, Kerman, Iran.
Department of Medical Parasitology, Zabol University of Medical Sciences, Zabol, Iran.
Iran J Parasitol. 2016 Jul-Sep;11(3):290-295.
BACKGROUND: Leishmaniasis is important vector-borne parasitic disease worldwide, caused by the genus . The objective of the current study was to identify genetic polymorphism in , one of the species causing cutaneous leishmaniasis (CL), isolated from southeastern Iran, using Permissively Primed Intergenic Polymorphic-Polymerase Chain Reaction (PPIP-PCR) method. METHODS: Overall, 340 patients with suspected CL were examined. They referred to the Central Laboratory in Chabahar, Iran during Apr 2013 to Feb 2014. Microscopic examination of Giemsa-stained slides from lesions as well as aspirates cultured in Novy- Mac Neal-Nicolle (NNN) Media was employed in order to diagnose CL in these patients. Our analyses detected 86 suspected subjects as having CL from which 35 isolates were cultured successfully. PPIP-PCR method was performed on extracted genomic DNA from selected isolates in order to determine the genetic polymorphism among isolates. RESULTS: The electrophoresis patterns demonstrated two genetic profiles including A or A1 patterns between all samples tested. Frequency of A and A1 sub-types were 33 (94.3%) and two (5.7%), respectively. CONCLUSION: Both host and parasite factors may contribute to the clinical profile of human leishmaniasis in the endemic foci of the disease. Here we showed that genetic variations pertaining to the parasites might determine, in part, the clinical outcomes of human leishmaniasis.
背景:利什曼病是一种重要的全球媒介传播寄生虫病,由利什曼原虫属引起。本研究的目的是使用允许引物间基因多态性聚合酶链反应(PPIP-PCR)方法,鉴定从伊朗东南部分离出的引起皮肤利什曼病(CL)的物种之一——硕大利什曼原虫的基因多态性。 方法:总共检查了340例疑似CL患者。他们于2013年4月至2014年2月前往伊朗恰巴哈尔的中央实验室就诊。为了诊断这些患者的CL,采用了对病变部位吉姆萨染色玻片以及在诺维-麦克尼尔-尼科尔(NNN)培养基中培养的吸出物进行显微镜检查的方法。我们的分析检测到86例疑似患有CL的受试者,其中35株菌株成功培养。对从选定菌株中提取的基因组DNA进行PPIP-PCR方法,以确定菌株之间的基因多态性。 结果:电泳图谱显示了两种基因谱,包括所有测试样品中的A或A1模式。A和A1亚型的频率分别为33(94.3%)和2(5.7%)。 结论:宿主和寄生虫因素都可能导致该病流行地区人类利什曼病的临床特征。在这里我们表明,与硕大利什曼原虫寄生虫相关的基因变异可能部分决定人类利什曼病的临床结果。
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