Izri Arezki, Bendjaballah-Laliam Amina, Sereno Denis, Akhoundi Mohammad
Parasitology-Mycology Department, Avicenne Hospital, AP-HP, 93009 Bobigny, France.
Unité des Virus Émergents (UVE: Aix-Marseille Univ-IRD 190-Inserm 1207-IHU Méditerranée Infection), 13005 Marseille, France.
Pathogens. 2021 Feb 25;10(3):267. doi: 10.3390/pathogens10030267.
Leishmaniases are neglected tropical diseases of public health concern in Algeria. To update the geographical distribution of spp. causing cutaneous affection, we examined a set of Giemsa-stained smears prepared from skin lesions of the patients suspected to have cutaneous leishmaniasis (CL) in various geographical areas in Algeria. The identification of parasites was performed using microscopy, conventional PCR, and PCR-RFLP (PCR-Restriction Fragment Length Polymorphism) targeting ITS1-rDNA. Among 32 smears provided from 27 suspected patients with cutaneous lesions, no trace of parasites was observed in the smear of three patients using microscopy and molecular approaches. Furthermore, four patients presented at least two lesions. PCR-RFLP confirmed the presence of in 29 smears prepared from 24 patients. Two biopsies, negative after microscopic examination, were found positive by PCR. Of these 29 PCR positive smears (24 patients), 20 were identified using RFLP-PCR as , two as , and two as We found infected patients from Ain skhouna, Biskra, El M'hir, Ghardaïa, M'Sila, and Saida, in agreement with previously reported cases. Furthermore, we highlighted for the first time, the identification of in the patients from Bourkika, Bou Kremissa, Bou Saada Clef, Hajout, Maghnia, Médéa, Menaceur, Messad, Mostaghanem, Nador, Oran, and Sidi Okba. A phylogenetic reconstruction performed with sequences collected from the PCR products confirmed these identifications. Our data provide additional information on the geographical extension of CL caused by and in Algeria.
利什曼病是阿尔及利亚公共卫生关注的被忽视热带病。为更新引起皮肤病变的利什曼原虫物种的地理分布,我们检查了一组吉姆萨染色涂片,这些涂片取自阿尔及利亚不同地理区域疑似皮肤利什曼病(CL)患者的皮肤病变。使用显微镜检查、常规PCR以及靶向ITS1-rDNA的PCR-RFLP(PCR-限制性片段长度多态性)对利什曼原虫寄生虫进行鉴定。在27名疑似皮肤病变患者提供的32份涂片中,通过显微镜检查和分子方法在3名患者的涂片中未观察到寄生虫痕迹。此外,4名患者至少有两处病变。PCR-RFLP证实了在24名患者制备的29份涂片中存在利什曼原虫。两份经显微镜检查为阴性的活检标本经PCR检测呈阳性。在这29份PCR阳性涂片(24名患者)中,20份经RFLP-PCR鉴定为热带利什曼原虫,两份为硕大利什曼原虫,两份为婴儿利什曼原虫。我们发现来自艾因斯库纳、比斯克拉、埃尔米希尔、加尔德艾亚、姆西拉和赛伊达的患者感染,这与先前报告的病例一致。此外,我们首次强调在布尔基卡、布克雷米萨、布萨达克莱夫、哈朱特、马格尼亚、梅代亚、梅纳瑟尔、梅萨德、莫斯塔加奈姆、纳多尔、奥兰和西迪奥克巴的患者中鉴定出利什曼原虫。用从PCR产物收集的序列进行的系统发育重建证实了这些鉴定结果。我们的数据提供了关于阿尔及利亚由热带利什曼原虫和硕大利什曼原虫引起的皮肤利什曼病地理范围的更多信息。