期刊
PARASITOLOGY INTERNATIONAL
卷 72, 期 -, 页码 -出版社
ELSEVIER IRELAND LTD
DOI: 10.1016/j.parint.2019.101935
关键词
Japan; Microminipig; Toxoplasmosis; Toxoplasma gondii; Virulence
类别
资金
- Research Program on Emerging and Re-emerging Infectious Diseases from the Japan Agency for Medical Research and development (AMED) [16fk0108110j0001]
- Japan Society for the Promotion of Science (JSPS) [17K19320, 17H04237]
- Joint Research Program of the Research Center for Zoonosis Control, Hokkaido University
- Grant Program for Biomedical Engineering Research from Nakatani Foundation for Advanced of Measuring Technologies in Biomedical Engineering, Japan
- Grants-in-Aid for Scientific Research [17K19320, 17H04237] Funding Source: KAKEN
Toxoplasma gondii strains have been isolated all over the world and their virulence has been examined mainly using laboratory mice. However, T. gondii differs in virulence depending on the host animal species. Therefore, to evaluate the virulence of each strain in domestic animals, it is necessary to examine using not only mice but also the concerned animals. We have shown that TgCatJpOk4, a T. gondii strain recently isolated in Okinawa, Japan, has a high virulence against laboratory mice, comparable to highest virulent RH strain in mice; however, the virulence to domestic animals remains unknown. In this study, we examined the virulence using the Microminipig. After infection, four out of five infected pigs showed severe clinical symptoms: inappetence, hypoactivity and tachypnea. Eventually, three out of the five infected pigs succumbed before the end of the observation. Among the three dead pigs, histological analysis revealed that interstitial pneumonia and spotty necrosis in the liver indicating that the TgCatJpOk4 strain has a high virulence not only in laboratory mice, but in pigs as well.
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