Parasites, Hosts and Diseases

The Korea Society for Parasitology and Tropical Medicine (대한기생충학·열대의학회)
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Prevalence and Molecular Characterization of Intestinal Trichomonads in Pet Dogs in East China

  • Li, Wen-Chao (College of Animal Science, Anhui Science and Technology University) ;
  • Wang, Kai (College of Animal Science, Anhui Science and Technology University) ;
  • Zhang, Wei (College of Animal Science, Anhui Science and Technology University) ;
  • Wu, Jingjing (College of Animal Science, Anhui Science and Technology University) ;
  • Gu, You-Fang (College of Animal Science, Anhui Science and Technology University) ;
  • Zhang, Xi-Chen (College of Veterinary Medicine, Jilin University)
  • Received : 2016.06.27
  • Accepted : 2016.09.27
  • Published : 2016.12.31
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Abstract

The trichomonad species Tritrichomonas foetus and Pentatrichomonas hominis were recently detected in the feces of dogs with diarrhea. However, little information is available on the prevalence and pathogenicity of these parasites in the canine population. Therefore, the aim of this study was to determine the prevalence and molecular characterization of trichomonads infecting pet dogs in Anhui and Zhejiang provinces, east China. In total, 315 pet dogs, with or without diarrhea, from 7 pet hospitals were included in this epidemiological survey. Microscopy and PCR detected P. hominis in 19.7% (62/315) and 31.4% (99/315) of fecal samples, respectively. T. foetus infection was detected in 0% (0/315) of samples with microscopy and in 0.6% (2/315) with PCR. The prevalence of P. hominis was significantly higher in young dogs (${\leq}12months$) than in adult dogs (>12 months), and was significantly higher in diarrheic dogs (50.6%) than in non-diarrheic dogs (24.3%; P<0.05). Infection with T. foetus did not correlate with any risk factors evaluated in this study. A sequence analysis of the P. hominis PCR products showed minor allelic variations between our sequences and those of P. hominis strains from other hosts in different parts of the world. Type CC1 was the most common strain in dogs in east China. The internal transcribed spacer 1 (ITS1)-5.8S rRNA gene sequences from the 2 T. foetus isolates detected in this study displayed 100% identity and were homologous to the sequences of other strains isolated from domestic cats in other countries.

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References

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