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MASUNO, Koichi,FUKUDA, Yasuhiro,KUBO, Masahito,IKARASHI, Ryo,KURAISHI, Takeshi,HATTORI, Shosaku,KIMURA, Junpei,KAI, Chieko,YANAI, Tokuma,NAKAI, Yutaka The Japanese Society of Veterinary Science 2014 The Journal of veterinary medical science Vol.76 No.2
<P><B>ABSTRACT</B></P><P><I>Cryptosporidium andersoni</I> and <I>Cryptosporidium muris</I> infections have been found in the mice and/or cattle. The oocysts of <I>C. andersoni</I> and <I>C. muris</I> have been sporadically detected in human feces, but the infectious capacity and features have been unknown, because of the scarcity of reports involving human infections. To assess the infectivity and the clinical and pathological features of <I>C. andersoni</I> and <I>C. muris</I> in primates, an experimental infectious study was conducted using cynomolgus monkeys. The monkeys were orally inoculated with oocysts of two different <I>C. andersoni</I> Kawatabi types and <I>C. muris</I> RN-66 under normal and immunosuppressive conditions. The feces of the monkeys were monitored for about 40 days after the administration of oocysts using the flotation method, but no shedding oocysts were observed under either both normal or immunosuppressive conditions. Gross and histopathological examinations were performed on the immunosuppressive monkeys, but these revealed no evidence of <I>Cryptosporidium</I> infections, even though the monkeys were subjected to immunosuppressive conditions. It is hypothesized that <I>C. andersoni</I> and <I>C. muris</I> pose little danger of infection in primates even under immunosuppressive conditions.</P>
Khaled Mohamed El-Dakhly,El-Shaymaa El-Nahass,Kosei Inui,Junpei KIMURA,Hiroki Sakai,Tokuma Yanai 대한수의학회 2013 Journal of Veterinary Science Vol.14 No.4
An adult male rufous turtle dove, Streptopelia (S.) orientalis (Aves: Columbiformes), was found dead in Yorii-machi Town, Osato District 369-1217, Saitama Prefecture, Japan,and subjected to necropsy. A large number of immobile hypopi (deutonymphs) of the hypoderatid mite, Hypodectes (H.) propus (Acarina: Hypoderatidae), were found individually encapsulated subcutaneously primarily in the adipose tissue. The mites were 1.43 mm in length and 0.44 mm in width on average, and had provoked mild inflammatory reactions that predominantly manifested as foamy macrophages and lymphoplasmocytes. PCR analysis using ribosomal DNA extracted from paraffin-blocked tissues produced a 240 bp band specific for hypoderatids. Based on the morphological features (distinct coxal apodemes,especially in the anterior portion) and PCR-based findings,the hypopi were identified as H. propus. To the best of our knowledge, this is the first case describing the subcutaneous mite H. propus in a rufous turtle dove, S. orientalis, in Japan. This study also highlights the use of paraffin blocks as a source of tissue DNA for molecular evaluation.