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Natural larval Echinococcus multilocularis infection in a Norway rat, Rattus norvegicus, captured indoors in Hokkaido, Japan.


ABSTRACT: Natural infection with larval Echinococcus multilocularis was recognized in one of eight Norway rats, Rattus norvegicus, caught indoors in 2009 in Ebetsu, Hokkaido, northern Japan. Cystic lesions were found in the right median and lateral lobes of the liver, with numerous alveolar cysts in the periphery of the lesions. Protoscolices were formed within large cysts. The laminated layers of the cysts were positive for PAS staining. Nested PCR using the primers specific for Taenia mitochondrial 12S rDNA yielded a 250-bp product, and the sequence of the PCR product matched that of E. multilocularis isolates from Hokkaido and Germany. This is the third natural alveolar hydatidosis in R. norvegicus in Japan.

SUBMITTER: Fukumoto SI 

PROVIDER: S-EPMC5709565 | biostudies-literature | 2017 Nov

REPOSITORIES: biostudies-literature

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Natural larval Echinococcus multilocularis infection in a Norway rat, Rattus norvegicus, captured indoors in Hokkaido, Japan.

Fukumoto Shin-Ichiro SI   Yamada Seitaro S   Fushikida Manato M   Toyada Shotaro S   Nishikawa Tomotaka T   Higuchi Hidetoshi H   Ueno Hiroshi H   Ueda Hiromi H   Sugiyama Hiromu H   Morishima Yasuyuki Y  

The Journal of veterinary medical science 20171011 11


Natural infection with larval Echinococcus multilocularis was recognized in one of eight Norway rats, Rattus norvegicus, caught indoors in 2009 in Ebetsu, Hokkaido, northern Japan. Cystic lesions were found in the right median and lateral lobes of the liver, with numerous alveolar cysts in the periphery of the lesions. Protoscolices were formed within large cysts. The laminated layers of the cysts were positive for PAS staining. Nested PCR using the primers specific for Taenia mitochondrial 12S  ...[more]

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