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Imamura S, Kanezashi H, Goshima T, Suto A, Ueki Y, Sugawara N, Ito H, Zou B, Uema M, Noda M, Akimoto K. Effect of High-Pressure Processing on Human Noroviruses in Laboratory-Contaminated Oysters by Bio-Accumulation. Foodborne Pathog Dis 2017; 14:518-523. [PMID: 28594572 DOI: 10.1089/fpd.2017.2294] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
The contamination of oysters with human noroviruses poses a human health risk, since oysters are often consumed raw. In this study, human norovirus genogroup II was allowed to bio-accumulate in oysters, and then the effect of high-pressure processing (HPP) on human noroviruses in oysters was determined through a polymerase chain reaction (PCR)-based method with enzymatic pretreatment to distinguish infectious noroviruses. As a result, oysters could be artificially contaminated to a detectable level of norovirus genome by the reverse transcription-PCR. Concentrations of norovirus genome in laboratory-contaminated oysters were log normally distributed, as determined by the real-time PCR, suggesting that artificial contamination by bio-accumulation was successful. In two independent HPP trials, a 1.87 log10 and 1.99 log10 reduction of norovirus GII.17 genome concentration was observed after HPP at 400 MPa for 5 min at 25°C. These data suggest that HPP is a promising process of inactivation of infectious human noroviruses in oysters. To our knowledge, this is the first report to investigate the effect of HPP on laboratory-contaminated noroviruses in oysters.
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Affiliation(s)
- Saiki Imamura
- 1 Food Safety and Consumer Affairs Bureau, Ministry of Agriculture Forestry and Fisheries , Tokyo, Japan
| | - Hiromi Kanezashi
- 1 Food Safety and Consumer Affairs Bureau, Ministry of Agriculture Forestry and Fisheries , Tokyo, Japan
| | - Tomoko Goshima
- 1 Food Safety and Consumer Affairs Bureau, Ministry of Agriculture Forestry and Fisheries , Tokyo, Japan
| | | | - You Ueki
- 3 Miyagi Prefectural Institute of Public Health and Environment , Miyaginoku, Sendai-shi, Miyagi, Japan
| | - Naoko Sugawara
- 3 Miyagi Prefectural Institute of Public Health and Environment , Miyaginoku, Sendai-shi, Miyagi, Japan
| | - Hiroshi Ito
- 4 Miyagi Prefecture Fisheries Technology Institute , Watanoha, Ishinomaki, Miyagi, Japan
| | - Bizhen Zou
- 5 Incorporated Foundation Tokyo Kenbikyo-in , Tokyo, Japan
| | - Masashi Uema
- 6 National Institute of Health Sciences , Kamiyoga, Setagaya, Tokyo, Japan
| | - Mamoru Noda
- 6 National Institute of Health Sciences , Kamiyoga, Setagaya, Tokyo, Japan
| | - Keiko Akimoto
- 1 Food Safety and Consumer Affairs Bureau, Ministry of Agriculture Forestry and Fisheries , Tokyo, Japan
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Shinomura M, Kishi K, Tomita A, Kawasumi M, Kanezashi H, Kuroda Y, Tsunekawa N, Ozawa A, Aiyama Y, Yoneda A, Suzuki H, Saito M, Picard JY, Kohno K, Kurohmaru M, Kanai-Azuma M, Kanai Y. A novel Amh-Treck transgenic mouse line allows toxin-dependent loss of supporting cells in gonads. Reproduction 2014; 148:H1-9. [PMID: 25212783 DOI: 10.1530/rep-14-0171] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Cell ablation technology is useful for studying specific cell lineages in a developing organ in vivo. Herein, we established a novel anti-Müllerian hormone (AMH)-toxin receptor-mediated cell knockout (Treck) mouse line, in which the diphtheria toxin (DT) receptor was specifically activated in Sertoli and granulosa cells in postnatal testes and ovaries respectively. In the postnatal testes of Amh-Treck transgenic (Tg) male mice, DT injection induced a specific loss of the Sertoli cells in a dose-dependent manner, as well as the specific degeneration of granulosa cells in the primary and secondary follicles caused by DT injection in Tg females. In the testes with depletion of Sertoli cell, germ cells appeared to survive for only several days after DT treatment and rapidly underwent cell degeneration, which led to the accumulation of a large amount of cell debris within the seminiferous tubules by day 10 after DT treatment. Transplantation of exogenous healthy Sertoli cells following DT treatment rescued the germ cell loss in the transplantation sites of the seminiferous epithelia, leading to a partial recovery of the spermatogenesis. These results provide not only in vivo evidence of the crucial role of Sertoli cells in the maintenance of germ cells, but also show that the Amh-Treck Tg line is a useful in vivo model of the function of the supporting cell lineage in developing mammalian gonads.
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Affiliation(s)
- Mai Shinomura
- Department of Veterinary AnatomyThe University of Tokyo, Yayoi 1-1-1, Bunkyo-ku, Tokyo 113-8657, JapanDepartment of Experimental Animal Model for Human DiseaseCenter for Experimental Animals, Tokyo Medical and Dental University, Yushima, Bunkyo-ku, Tokyo 113-8510, JapanGraduate School of Biological SciencesNara Institute of Science and Technology, 8916-5, Takayama, Ikoma, Nara 630-0192, JapanINSERM U1133BFA, University Paris VII, 75205 Paris Cedex 13, France
| | - Kasane Kishi
- Department of Veterinary AnatomyThe University of Tokyo, Yayoi 1-1-1, Bunkyo-ku, Tokyo 113-8657, JapanDepartment of Experimental Animal Model for Human DiseaseCenter for Experimental Animals, Tokyo Medical and Dental University, Yushima, Bunkyo-ku, Tokyo 113-8510, JapanGraduate School of Biological SciencesNara Institute of Science and Technology, 8916-5, Takayama, Ikoma, Nara 630-0192, JapanINSERM U1133BFA, University Paris VII, 75205 Paris Cedex 13, France
| | - Ayako Tomita
- Department of Veterinary AnatomyThe University of Tokyo, Yayoi 1-1-1, Bunkyo-ku, Tokyo 113-8657, JapanDepartment of Experimental Animal Model for Human DiseaseCenter for Experimental Animals, Tokyo Medical and Dental University, Yushima, Bunkyo-ku, Tokyo 113-8510, JapanGraduate School of Biological SciencesNara Institute of Science and Technology, 8916-5, Takayama, Ikoma, Nara 630-0192, JapanINSERM U1133BFA, University Paris VII, 75205 Paris Cedex 13, France
| | - Miyuri Kawasumi
- Department of Veterinary AnatomyThe University of Tokyo, Yayoi 1-1-1, Bunkyo-ku, Tokyo 113-8657, JapanDepartment of Experimental Animal Model for Human DiseaseCenter for Experimental Animals, Tokyo Medical and Dental University, Yushima, Bunkyo-ku, Tokyo 113-8510, JapanGraduate School of Biological SciencesNara Institute of Science and Technology, 8916-5, Takayama, Ikoma, Nara 630-0192, JapanINSERM U1133BFA, University Paris VII, 75205 Paris Cedex 13, France
| | - Hiromi Kanezashi
- Department of Veterinary AnatomyThe University of Tokyo, Yayoi 1-1-1, Bunkyo-ku, Tokyo 113-8657, JapanDepartment of Experimental Animal Model for Human DiseaseCenter for Experimental Animals, Tokyo Medical and Dental University, Yushima, Bunkyo-ku, Tokyo 113-8510, JapanGraduate School of Biological SciencesNara Institute of Science and Technology, 8916-5, Takayama, Ikoma, Nara 630-0192, JapanINSERM U1133BFA, University Paris VII, 75205 Paris Cedex 13, France
| | - Yoshiko Kuroda
- Department of Veterinary AnatomyThe University of Tokyo, Yayoi 1-1-1, Bunkyo-ku, Tokyo 113-8657, JapanDepartment of Experimental Animal Model for Human DiseaseCenter for Experimental Animals, Tokyo Medical and Dental University, Yushima, Bunkyo-ku, Tokyo 113-8510, JapanGraduate School of Biological SciencesNara Institute of Science and Technology, 8916-5, Takayama, Ikoma, Nara 630-0192, JapanINSERM U1133BFA, University Paris VII, 75205 Paris Cedex 13, France
| | - Naoki Tsunekawa
- Department of Veterinary AnatomyThe University of Tokyo, Yayoi 1-1-1, Bunkyo-ku, Tokyo 113-8657, JapanDepartment of Experimental Animal Model for Human DiseaseCenter for Experimental Animals, Tokyo Medical and Dental University, Yushima, Bunkyo-ku, Tokyo 113-8510, JapanGraduate School of Biological SciencesNara Institute of Science and Technology, 8916-5, Takayama, Ikoma, Nara 630-0192, JapanINSERM U1133BFA, University Paris VII, 75205 Paris Cedex 13, France
| | - Aisa Ozawa
- Department of Veterinary AnatomyThe University of Tokyo, Yayoi 1-1-1, Bunkyo-ku, Tokyo 113-8657, JapanDepartment of Experimental Animal Model for Human DiseaseCenter for Experimental Animals, Tokyo Medical and Dental University, Yushima, Bunkyo-ku, Tokyo 113-8510, JapanGraduate School of Biological SciencesNara Institute of Science and Technology, 8916-5, Takayama, Ikoma, Nara 630-0192, JapanINSERM U1133BFA, University Paris VII, 75205 Paris Cedex 13, France
| | - Yoshimi Aiyama
- Department of Veterinary AnatomyThe University of Tokyo, Yayoi 1-1-1, Bunkyo-ku, Tokyo 113-8657, JapanDepartment of Experimental Animal Model for Human DiseaseCenter for Experimental Animals, Tokyo Medical and Dental University, Yushima, Bunkyo-ku, Tokyo 113-8510, JapanGraduate School of Biological SciencesNara Institute of Science and Technology, 8916-5, Takayama, Ikoma, Nara 630-0192, JapanINSERM U1133BFA, University Paris VII, 75205 Paris Cedex 13, France
| | - Asuka Yoneda
- Department of Veterinary AnatomyThe University of Tokyo, Yayoi 1-1-1, Bunkyo-ku, Tokyo 113-8657, JapanDepartment of Experimental Animal Model for Human DiseaseCenter for Experimental Animals, Tokyo Medical and Dental University, Yushima, Bunkyo-ku, Tokyo 113-8510, JapanGraduate School of Biological SciencesNara Institute of Science and Technology, 8916-5, Takayama, Ikoma, Nara 630-0192, JapanINSERM U1133BFA, University Paris VII, 75205 Paris Cedex 13, France
| | - Hitomi Suzuki
- Department of Veterinary AnatomyThe University of Tokyo, Yayoi 1-1-1, Bunkyo-ku, Tokyo 113-8657, JapanDepartment of Experimental Animal Model for Human DiseaseCenter for Experimental Animals, Tokyo Medical and Dental University, Yushima, Bunkyo-ku, Tokyo 113-8510, JapanGraduate School of Biological SciencesNara Institute of Science and Technology, 8916-5, Takayama, Ikoma, Nara 630-0192, JapanINSERM U1133BFA, University Paris VII, 75205 Paris Cedex 13, France
| | - Michiko Saito
- Department of Veterinary AnatomyThe University of Tokyo, Yayoi 1-1-1, Bunkyo-ku, Tokyo 113-8657, JapanDepartment of Experimental Animal Model for Human DiseaseCenter for Experimental Animals, Tokyo Medical and Dental University, Yushima, Bunkyo-ku, Tokyo 113-8510, JapanGraduate School of Biological SciencesNara Institute of Science and Technology, 8916-5, Takayama, Ikoma, Nara 630-0192, JapanINSERM U1133BFA, University Paris VII, 75205 Paris Cedex 13, France
| | - Jean-Yves Picard
- Department of Veterinary AnatomyThe University of Tokyo, Yayoi 1-1-1, Bunkyo-ku, Tokyo 113-8657, JapanDepartment of Experimental Animal Model for Human DiseaseCenter for Experimental Animals, Tokyo Medical and Dental University, Yushima, Bunkyo-ku, Tokyo 113-8510, JapanGraduate School of Biological SciencesNara Institute of Science and Technology, 8916-5, Takayama, Ikoma, Nara 630-0192, JapanINSERM U1133BFA, University Paris VII, 75205 Paris Cedex 13, France
| | - Kenji Kohno
- Department of Veterinary AnatomyThe University of Tokyo, Yayoi 1-1-1, Bunkyo-ku, Tokyo 113-8657, JapanDepartment of Experimental Animal Model for Human DiseaseCenter for Experimental Animals, Tokyo Medical and Dental University, Yushima, Bunkyo-ku, Tokyo 113-8510, JapanGraduate School of Biological SciencesNara Institute of Science and Technology, 8916-5, Takayama, Ikoma, Nara 630-0192, JapanINSERM U1133BFA, University Paris VII, 75205 Paris Cedex 13, France
| | - Masamichi Kurohmaru
- Department of Veterinary AnatomyThe University of Tokyo, Yayoi 1-1-1, Bunkyo-ku, Tokyo 113-8657, JapanDepartment of Experimental Animal Model for Human DiseaseCenter for Experimental Animals, Tokyo Medical and Dental University, Yushima, Bunkyo-ku, Tokyo 113-8510, JapanGraduate School of Biological SciencesNara Institute of Science and Technology, 8916-5, Takayama, Ikoma, Nara 630-0192, JapanINSERM U1133BFA, University Paris VII, 75205 Paris Cedex 13, France
| | - Masami Kanai-Azuma
- Department of Veterinary AnatomyThe University of Tokyo, Yayoi 1-1-1, Bunkyo-ku, Tokyo 113-8657, JapanDepartment of Experimental Animal Model for Human DiseaseCenter for Experimental Animals, Tokyo Medical and Dental University, Yushima, Bunkyo-ku, Tokyo 113-8510, JapanGraduate School of Biological SciencesNara Institute of Science and Technology, 8916-5, Takayama, Ikoma, Nara 630-0192, JapanINSERM U1133BFA, University Paris VII, 75205 Paris Cedex 13, France
| | - Yoshiakira Kanai
- Department of Veterinary AnatomyThe University of Tokyo, Yayoi 1-1-1, Bunkyo-ku, Tokyo 113-8657, JapanDepartment of Experimental Animal Model for Human DiseaseCenter for Experimental Animals, Tokyo Medical and Dental University, Yushima, Bunkyo-ku, Tokyo 113-8510, JapanGraduate School of Biological SciencesNara Institute of Science and Technology, 8916-5, Takayama, Ikoma, Nara 630-0192, JapanINSERM U1133BFA, University Paris VII, 75205 Paris Cedex 13, France
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