Fernández-Arévalo Anna, Ballart Cristina, Muñoz-Basagoiti Jordana, Basarte Leire, Lobato Gonzalo, Arnau Albert, Abras Alba, Tebar Silvia, Llovet Teresa, Lami Patrick, Pratlong Francine, Alsina Mercè, Roe Esther, Puig Lluís, Muñoz Carme, Gállego Montserrat
Secció de Parasitologia, Departament de Biologia, Sanitat i Medi Ambient, Facultat de Farmàcia i Ciències de l'Alimentació, Universitat de Barcelona, Barcelona, Spain.
Institut de Recerca Biomèdica Sant Pau, Barcelona, Spain.
Transbound Emerg Dis. 2022 May;69(3):1404-1418. doi: 10.1111/tbed.14107. Epub 2021 May 5.
Leishmaniasis is a transmissible disease caused by Leishmania protozoa. Spain is endemic for both visceral and cutaneous leishmaniasis, the autochthonous aetiological agent being Leishmania infantum. Around the world, the L. donovani complex is associated with visceral symptoms, while any species of the Leishmania or Viannia subgenera affecting human can produce tegumentary forms. In a context of growing numbers of imported cases, associated with globalisation, the aim of this study was to analyse the aetiological evolution of human tegumentary leishmaniasis in a region of Spain (Catalonia). Fifty-six Leishmania strains, isolated from 1981 to 2018, were analysed using MLEE, gene sequencing (hsp70, rpoIILS, fh and ITS2) and MALDI-TOF. The utility of these different analytical methods was compared. The results showed an increase in leishmaniasis over the two last decades, particularly imported cases, which represented 39% of all cases studied. Leishmania infantum, L. major, L. tropica, L. braziliensis, L. guyanensis and L. panamensis were identified. The combination of molecular and enzymatic methods allowed the identification of 29 different strain types (A to AC). Strain diversity was higher in L. (Viannia), whilst the different L. major types were relatable with geo-temporal data. Among the autochthonous cases, type C prevailed throughout the studied period (39%). Minor types generally appeared within a short time interval. While all the techniques provided identical identification at the species complex level, MALDI-TOF and rpoIILS or fh sequencing would be the most suitable identification tools for clinical practice, and the tandem hsp70-ITS2 could substitute MLEE in the epidemiological field.
利什曼病是一种由利什曼原虫引起的传染病。西班牙是内脏利什曼病和皮肤利什曼病的流行地区,本地病原体为婴儿利什曼原虫。在全球范围内,杜氏利什曼原虫复合体与内脏症状相关,而影响人类的利什曼原虫或维氏亚属的任何物种都可导致皮肤型疾病。在全球化导致输入性病例不断增加的背景下,本研究旨在分析西班牙一个地区(加泰罗尼亚)人类皮肤利什曼病的病因演变。对1981年至2018年分离出的56株利什曼原虫菌株进行了多位点酶电泳(MLEE)、基因测序(hsp70、rpoIILS、fh和ITS2)以及基质辅助激光解吸电离飞行时间质谱(MALDI-TOF)分析。比较了这些不同分析方法的实用性。结果显示,在过去二十年中利什曼病有所增加,尤其是输入性病例,占所有研究病例的39%。鉴定出了婴儿利什曼原虫、硕大利什曼原虫、热带利什曼原虫、巴西利什曼原虫、圭亚那利什曼原虫和巴拿马利什曼原虫。分子和酶学方法相结合可鉴定出29种不同的菌株类型(A至AC)。利什曼原虫(维氏亚属)中的菌株多样性更高,而不同的硕大利什曼原虫类型与地理时间数据相关。在本地病例中,C型在整个研究期间占主导地位(39%)。少数类型通常在短时间间隔内出现。虽然所有技术在物种复合体水平上提供了相同的鉴定结果,但MALDI-TOF和rpoIILS或fh测序将是临床实践中最合适的鉴定工具,而串联hsp70-ITS2可在流行病学领域替代MLEE。
Am J Trop Med Hyg. 2019-10
BMC Infect Dis. 2021-9-15
Transbound Emerg Dis. 2024-8-29
Can J Infect Dis Med Microbiol. 2024-3-7
Parasitology. 2024-2
Curr Res Parasitol Vector Borne Dis. 2023-10-15