Intestinal Tritrichomonas suis (=T. foetus) Infection in Japanese Cats

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  • DOI Junko
    United Graduate School of Veterinary Science, Yamaguchi University, Yamaguchi 753-8515, Japan School of Veterinary Medicine, Tottori University, Tottori 680-8553, Japan
  • HIROTA Junichi
    Graduate School of Veterinary Medicine, Hokkaido University, Hokkaido 060-0818, Japan
  • MORITA Akihiko
    Graduate School of Veterinary Medicine, Hokkaido University, Hokkaido 060-0818, Japan
  • FUKUSHIMA Kanae
    Kounosu Animal Hospital, Saitama 365-0039, Japan
  • KAMIJYO Hiromi
    Graduate School of Veterinary Medicine, Hokkaido University, Hokkaido 060-0818, Japan
  • OHTA Hiroshi
    Graduate School of Veterinary Medicine, Hokkaido University, Hokkaido 060-0818, Japan
  • YAMASAKI Masahiro
    Graduate School of Veterinary Medicine, Hokkaido University, Hokkaido 060-0818, Japan
  • TAKAHASHI Toru
    Takahashi Animal Hospital, Hokkaido 003-0802, Japan
  • KATAKURA Ken
    Graduate School of Veterinary Medicine, Hokkaido University, Hokkaido 060-0818, Japan
  • OKU Yuzaburo
    School of Veterinary Medicine, Tottori University, Tottori 680-8553, Japan

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タイトル別名
  • Intestinal <i>Tritrichomonas suis </i>(=<i>T. foetus</i>) Infection in Japanese Cats

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説明

Tritrichomonas suis (=T. foetus) has recently been reported to be a causative agent of chronic large-bowel diarrhea in cats. While the disease was previously attributed to Pentatrichomonas hominis, the etiologic agent for feline trichomonal diarrhea was identified as T. suis. Although feline trichomonosis due to T. suis has been reported at prevalences ranging from 14 to 31% in Europe and the U.S., no reports of the pathogen have been published to date in Japan. In 2008, however, we encountered a case of feline trichomonosis at the Veterinary Teaching Hospital of Hokkaido University. The parasite was identified as T. suis by nested PCR amplification of partial internal transcribed spacer region 1 and 5.8S ribosomal RNA gene sequences with T. suis-specific primers and DNA sequencing of the amplified products. We then conducted surveys for feline trichomonosis in three different animal hospitals using either cultivation and/or PCR-based assays. The results revealed that 13 of 147 samples (8.8%) were positive for T. suis, and that 5 of the 13 infected cats, which ranged between 1 month and 7.5 years-old, showed chronic diarrhea. Seven of the infected cats were purebred and 6 were mixed breed. These findings suggested that feline trichomonosis is prevalent in Japan, and that T. suis may play a role as a causative agent of feline chronic diarrhea.

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