Prevalence and genotyping of Toxoplasma gondii in naturally-infected synanthropic rats (Rattus norvegicus) and mice (Mus musculus) in eastern China

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• 作者：Chao Yan (1)
  Li-Jun Liang (1) (2)
  Bei-Bei Zhang (1)
  Zhi-Long Lou (3)
  Hui-Feng Zhang (1) (2)
  Xuan Shen (1) (2)
  Yu-Qing Wu (1) (4)
  Zi-Mu Wang (1) (2)
  Ren-Xian Tang (1)
  Lin-Lin Fu (1)
  Kui-Yang Zheng (1)
  
  1. Department of Pathogenic Biology and Immunology ; Laboratory of Infection and Immunity ; Xuzhou Medical College ; Xuzhou ; Jiangsu Province ; 221004 ; PR China
  2. Department of Clinical Medicine ; Xuzhou Medical College ; Xuzhou ; Jiangsu Province ; 221004 ; PR China
  3. State Key Laboratory of Veterinary Etiological Biology ; Key Laboratory of Veterinary Parasitology of Gansu Province ; Lanzhou Veterinary Research Institute ; Chinese Academy of Agricultural Sciences ; Lanzhou ; Gansu Province ; 730046 ; PR China
  4. School of Medical Technology ; Xuzhou Medical College ; Xuzhou ; Jiangsu Province ; 221004 ; PR China
  
• 关键词：Prevalence ; Toxoplasma gondii ; Genetic characterization ; Synanthropic rodent ; Eastern China
• 刊名：Parasites & Vectors
• 出版年：2014
• 出版时间：December 2014
• 年：2014
• 卷：7
• 期：1
• 全文大小：177 KB
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• 刊物主题：Parasitology; Infectious Diseases; Tropical Medicine; Entomology;
• 出版者：BioMed Central
• ISSN：1756-3305

文摘

Background Synanthropic rats and mice share the same environment with humans and play an important role in epidemiology of toxoplasmosis; however, there is limited information about prevalence and genetic characterization of Toxoplasma gondii in synanthropic rats and mice in China. Findings In the present study, the prevalence and genetic characterization of T. gondii naturally infected synanthropic rodents (Rattus norvegicus and Mus musculus) were investigated in the urban area of Xuzhou city, Eastern China between June 2013 and August 2014. DNA from the brain of each animal was prepared and screened by specific PCR assay targeting 35-fold repeated B1 gene (B1-PCR). PCR positive DNA samples were further genotyped by multi-locus PCR-RFLP. Overall, out of 123 synanthropic rodents, 29 samples were positive by B1 gene-targeted PCR (23.6%). Of these, 7 out of 31 (22.3%) M. musculus were positive, whereas the positive rate of R. norvegicus was 23.9% (22/92). Multi-locus PCR-RFLP analysis reveals that seven PCR-positive samples were completely genotyped and they were identified as type China 1 (ToxoDB# 9). Conclusion To our knowledge, this is the first report of molecular detection and genetic characterization of T. gondii infection in synanthropic rodents in Eastern China. The results of the present study showed a high infection pressure of T. gondii exists in the environment and synanthropic rodents infected by T. gondii may be an important source of infection for cats and other animals.