Melis Mauricio, Espinoza-Carniglia Mario, Savchenko Ekaterina, Nava Santiago, Lareschi Marcela
Centro de Estudios Parasitológicos y de Vectores (CEPAVE) (CONICET-UNLP), Bv. 120 s/n e/60 y 64, CP 1900 La Plata, Argentina.
Centro de Estudios Parasitológicos y de Vectores (CEPAVE) (CONICET-UNLP), Bv. 120 s/n e/60 y 64, CP 1900 La Plata, Argentina.
Vet Parasitol Reg Stud Reports. 2020 Jul;21:100445. doi: 10.1016/j.vprsr.2020.100445. Epub 2020 Aug 7.
The aim of this study was to detect and identify the presence of Rickettsia in fleas associated with cricetid rodents from northeastern Buenos Aires Province, Argentina. Sixteen fleas belonging to three species of Polygenis were collected from 56 cricetid rodents and analyzed for the presence of Rickettsia performing the conventional polymerase chain reaction (PCR) technique. Only one specimen of Polygenis (Polygenis) axius axius collected from Oxymycterus rufus was positive for Rickettsia felis using the gltA gene, and to ompA gene. This is the first report of R. felis in a Rhopalopsyllidae flea from Argentina, and the first detection of this bacterium in P. (P.) a. axius. Since both, O. rufus and P. (P.) a. axius, are common in areas close to humans, and enzootic cycle of R. felis is not fully understood, the results herein obtained might be of epidemiological importance. Further studies are needed in order to analyze the capacity of the species of Polygenis to transmit R. felis.
本研究的目的是检测和鉴定来自阿根廷布宜诺斯艾利斯省东北部的仓鼠科啮齿动物身上的跳蚤中是否存在立克次氏体。从56只仓鼠科啮齿动物身上收集了属于三种多蚤属的16只跳蚤，并采用传统聚合酶链反应（PCR）技术分析立克次氏体的存在情况。仅从棕腹鼠采集到的一只多蚤属（多蚤属）轴蚤轴蚤标本，利用柠檬酸合酶基因（gltA）和外膜蛋白A基因（ompA）检测立克次氏体猫血巴尔通体呈阳性。这是阿根廷首次在角叶蚤科跳蚤中发现猫血巴尔通体，也是首次在轴蚤轴蚤中检测到这种细菌。由于棕腹鼠和轴蚤轴蚤在靠近人类的地区都很常见，而且猫血巴尔通体的动物疫源循环尚未完全了解，因此本文获得的结果可能具有流行病学意义。需要进一步研究以分析多蚤属物种传播猫血巴尔通体的能力。
