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

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Abstract

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.

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Acknowledgements

This work was supported by the NIH Fogarty International Center (grants number RFATW-00-002 and RO1 TW001565). The content is solely the responsibility of the authors and does not necessarily represent the official views of the Fogarty International Center or the National Institutes of Health.

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Authors and Affiliations

  1. Department of Parasitology, University of Hohenheim, Emil-Wolff-Str.34, 70599, Stuttgart, Germany

    Anke Dinkel, Selina Kern, Anja Brinker, Ute Mackenstedt & Thomas Romig

  2. State Health Office Baden-Wuerttemberg, Nordbahnhofstr. 135, 70191, Stuttgart, Germany

    Rainer Oehme

  3. Department of Chrono-environment, UMR UFC/CNRS 6249 aff. INRA, Universite de Franche-Comté, 25030, Besançon, France

    Amélie Vaniscotte & Patrick Giraudoux

Authors
  1. Anke Dinkel
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  2. Selina Kern
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  3. Anja Brinker
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  4. Rainer Oehme
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  5. Amélie Vaniscotte
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  6. Patrick Giraudoux
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  7. Ute Mackenstedt
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  8. Thomas Romig
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Correspondence to Anke Dinkel.

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Dinkel, A., Kern, S., Brinker, A. et al. A real-time multiplex-nested PCR system for coprological diagnosis of Echinococcus multilocularis and host species. Parasitol Res 109, 493–498 (2011). https://doi.org/10.1007/s00436-011-2272-0

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  • DOI: https://doi.org/10.1007/s00436-011-2272-0

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