A real-time multiplex-nested PCR system for coprological diagnosis of Echinococcus multilocularis and host species.

• Published in: Parasitology Research
• Main Authors: Dinkle, Anke, Kern, Selina, Brinker, Anja, Oehme, Rainer, Vaniscotte, Amélie, Giraudoux, Patrick, Mackenstedt, Ute, Romig, Thomas
• Other Authors: Department of Parsitology Stuttgart, University of Hohenheim, State Health Office Bade-Wurtemberg, Land Bade-Wurtemberg, Laboratoire Chrono-environnement - CNRS - UBFC (UMR 6249) (LCE), Centre National de la Recherche Scientifique (CNRS)-Université de Franche-Comté (UFC), Université Bourgogne Franche-Comté COMUE (UBFC)-Université Bourgogne Franche-Comté COMUE (UBFC), WHO Collaborating Center on Prevention and Treatment of Human Echinococcosis, Université de Franche-Comté (UFC)
• Format: Article in Journal/Newspaper
• Language: English
• Published: HAL CCSD 2011
• Subjects: Echinococcus multilocularis; real-time multiplex PCR; diagnostics; host species; [SDE.BE]Environmental Sciences/Biodiversity and Ecology; [SDV.EE.SANT]Life Sciences [q-bio]/Ecology; environment/Health; Microtus arvalis
• Online Access: https://hal.archives-ouvertes.fr/hal-00560792; https://doi.org/10.1007/s00436-011-2272-0

Attention Patrick Giraudoux n'est pas affilié à UR0346 International audience A hybridization probe-based real-time multiplex-nested PCR system was developed for the simultaneous detection of Echinococcus multilocularis and host species directly from faecal samples. Species identification was determined by melting curve analysis. Specificity was assessed by using DNA extracted from various cestodes (E. multilocularis, Echinococcus granulosus (G1), Echinococcus ortleppi, Echinococcus canadensis (G6, G7), Taenia crassiceps, Taenia hydatigena, Taenia mustelae, Taenia pisiformis, Taenia serialis, Taenia taeniaeformis, Mesocestoides leptothylacus), carnivores (Vulpes vulpes, Vulpes corsac, Vulpes ferrilata, Canis familiaris, Felis catus, Martes foina), Microtus arvalis and Arvicola terrestris. The analytical sensitivity was 10 fg, evaluated with serially diluted DNA of E. multilocularis to 10 μl total DNA solution from E. multilocularis-negative canid faeces. Based on a comparison of 47 dog samples from China, the proportion of the E. multilocularis-positive-tested samples by the real-time multiplex-nested PCR was moderately higher (38% vs. 30%) as when tested with a previously evaluated nested PCR with a sensitivity of 70-100%, depending on the number and gravidity status of worms present in the intestine (Dinkel et al., J Clin Microbiol 36:1871-1876, 1998). To assess the epidemiological applicability of this method, 227 canid faecal samples collected in the field were analysed. This newly developed real-time multiplex-nested PCR system is a specific, sensitive and reliable method for the detection of E. multilocularis and host species in faecal samples for epidemiological purposes.