1
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Sato T, Nakamura SI, Kadekaru S, Endo M, Hattori YK, Une Y. Pathological findings of mammary gland carcinoma and hemangiosarcoma cases in two African wild dogs (Lycaon pictus). J Vet Med Sci 2024:23-0381. [PMID: 38583979 DOI: 10.1292/jvms.23-0381] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [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: 04/09/2024] Open
Abstract
There are few studies on diseases affecting endangered African wild dogs. We report our findings on malignant tumors in two African wild dogs. Case 1 was a 6-year-old intact female diagnosed with inflammatory mammary carcinoma with pulmonary metastasis. Case 2 was an 11-year-old male diagnosed with primary hemangiosarcoma of the left atrial coronary sulcus with metastasis to multiple organs. Additionally, the tumor had grown through the cardiac wall, causing cardiac tamponade. The identification of disease incidence trends provides important information which will allow for the early detection and treatment of malignant tumors, and aid in the conservation of this species.
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Affiliation(s)
- Tomotaka Sato
- The Laboratory of Veterinary Pathology, Faculty of Veterinary Medicine, Okayama University of Science
| | - Shin-Ichi Nakamura
- The Laboratory of Veterinary Pathology, Faculty of Veterinary Medicine, Okayama University of Science
| | - Sho Kadekaru
- The Laboratory of Veterinary Pathology, Faculty of Veterinary Medicine, Okayama University of Science
| | | | | | - Yumi Une
- The Laboratory of Veterinary Pathology, Faculty of Veterinary Medicine, Okayama University of Science
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2
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Sedghi Masoud N, Iwaide S, Itoh Y, Hisada M, Une Y, Murakami T. Apolipoprotein A-IV amyloidosis in a cotton-top tamarin ( Saguinus oedipus). Amyloid 2023; 30:348-350. [PMID: 36661201 DOI: 10.1080/13506129.2023.2169603] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/13/2022] [Revised: 11/14/2022] [Accepted: 01/12/2023] [Indexed: 01/21/2023]
Affiliation(s)
- Niki Sedghi Masoud
- Laboratory of Veterinary Toxicology, Tokyo University of Agriculture and Technology, Tokyo, Japan
| | - Susumu Iwaide
- Laboratory of Veterinary Toxicology, Tokyo University of Agriculture and Technology, Tokyo, Japan
| | - Yoshiyuki Itoh
- Smart-Core-Facility Promotion Organization, Tokyo University of Agriculture and Technology, Tokyo, Japan
| | - Miki Hisada
- Smart-Core-Facility Promotion Organization, Tokyo University of Agriculture and Technology, Tokyo, Japan
| | - Yumi Une
- Laboratory of Veterinary Pathology, Okayama University of Science, Ehime, Japan
| | - Tomoaki Murakami
- Laboratory of Veterinary Toxicology, Tokyo University of Agriculture and Technology, Tokyo, Japan
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3
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Kutara K, Kadekaru S, Sugisawa R, Saito F, Une Y. Congenital systemic chondrodysplasia in a white lion (
Panthera leo
). Vet Record Case Reports 2022. [DOI: 10.1002/vrc2.534] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Affiliation(s)
- Kenji Kutara
- Faculty of Veterinary Medicine Okayama University of Science Imabari Ehime Japan
| | - Sho Kadekaru
- Faculty of Veterinary Medicine Okayama University of Science Imabari Ehime Japan
| | | | - Fumiyo Saito
- Faculty of Veterinary Medicine Okayama University of Science Imabari Ehime Japan
| | - Yumi Une
- Faculty of Veterinary Medicine Okayama University of Science Imabari Ehime Japan
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4
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Uchiyama J, Osumi T, Mizukami K, Fukuyama T, Shima A, Unno A, Takemura-Uchiyama I, Une Y, Murakami H, Sakaguchi M. Characterization of the oral and fecal microbiota associated with atopic dermatitis in dogs selected from a purebred Shiba Inu colony. Lett Appl Microbiol 2022; 75:1607-1616. [PMID: 36067033 DOI: 10.1111/lam.13828] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2022] [Revised: 08/21/2022] [Accepted: 08/31/2022] [Indexed: 11/30/2022]
Abstract
Atopic dermatitis (AD) is a chronic and relapsing multifactorial inflammatory skin disease that also affects dogs. The oral and gut microbiota are associated with many disorders, including allergy. Few studies have addressed the oral and gut microbiota in dogs, although the skin microbiota has been studied relatively well in these animals. Here, we studied the AD-associated oral and gut microbiota in 16 healthy and nine AD dogs from a purebred Shiba Inu colony. We found that the diversity of the oral microbiota was significantly different among the dogs, whereas no significant difference was observed in the gut microbiota. Moreover, a differential abundance analysis detected the Family_XIII_AD3011_group (Anaerovoracaceae) in the gut microbiota of AD dogs; however, no bacterial taxa were detected in the oral microbiota. Third, the comparison of the microbial co-occurrence patterns between AD and healthy dogs identified differential networks in which the bacteria in the oral microbiota that were most strongly associated with AD were related with human periodontitis, whereas those in the gut microbiota were related with dysbiosis and gut inflammation. These results suggest that AD can alter the oral and gut microbiota in dogs.
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Affiliation(s)
- Jumpei Uchiyama
- Department of Bacteriology, Graduate School of Medicine Dentistry and Pharmaceutical Sciences, Okayama University, Okayama, Japan.,School of Veterinary Medicine, Azabu University, Kanagawa, Japan
| | - Takafumi Osumi
- Laboratory of Veterinary Internal Medicine, Division of Animal Life Science, Graduate School, Tokyo University of Agriculture and Technology, Tokyo, Japan
| | - Keijiro Mizukami
- School of Veterinary Medicine, Azabu University, Kanagawa, Japan.,Laboratory for Genotyping Development, RIKEN Center for Integrative Medical Sciences, Yokohama, Japan
| | - Tomoki Fukuyama
- School of Veterinary Medicine, Azabu University, Kanagawa, Japan
| | - Ayaka Shima
- Anicom Specialty Medical Institute Inc., Tokyo, Japan
| | - Asaka Unno
- School of Veterinary Medicine, Azabu University, Kanagawa, Japan
| | - Iyo Takemura-Uchiyama
- Department of Bacteriology, Graduate School of Medicine Dentistry and Pharmaceutical Sciences, Okayama University, Okayama, Japan.,School of Veterinary Medicine, Azabu University, Kanagawa, Japan
| | - Yumi Une
- Faculty of Veterinary Medicine, Okayama University of Science, Ehime, Japan
| | | | - Masahiro Sakaguchi
- School of Veterinary Medicine, Azabu University, Kanagawa, Japan.,Institute of Tokyo Environmental Allergy, Tokyo, Japan
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5
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Kutara K, Ono T, Hisaeda K, Inoue Y, Henmi C, Sho K, Ohnishi A, Ohzawa E, Une Y, Iwata E, Shibano K, Asanuma T, Kitagawa H. An anatomical study of the skull, the dorsal and ventral nasal conchal bullae and paranasal sinuses in normal Noma horses: Computed tomographic anatomical and morphometric findings. Anat Histol Embryol 2022; 51:624-632. [DOI: 10.1111/ahe.12837] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2021] [Revised: 06/20/2022] [Accepted: 07/06/2022] [Indexed: 11/30/2022]
Affiliation(s)
- Kenji Kutara
- Faculty of Veterinary Medicine Okayama University of Science Imabari Japan
| | - Tetsushi Ono
- Faculty of Veterinary Medicine Okayama University of Science Imabari Japan
| | - Keiichi Hisaeda
- Faculty of Veterinary Medicine Okayama University of Science Imabari Japan
| | - Yoichi Inoue
- Faculty of Veterinary Medicine Okayama University of Science Imabari Japan
| | - Chizuka Henmi
- Faculty of Veterinary Medicine Okayama University of Science Imabari Japan
| | - Kadekaru Sho
- Faculty of Veterinary Medicine Okayama University of Science Imabari Japan
| | - Akihiro Ohnishi
- Faculty of Veterinary Medicine Okayama University of Science Imabari Japan
| | - Emi Ohzawa
- Noma Horse Preservation Society 8 Noma Imabari Japan
| | - Yumi Une
- Faculty of Veterinary Medicine Okayama University of Science Imabari Japan
| | - Eri Iwata
- Faculty of Veterinary Medicine Okayama University of Science Imabari Japan
| | - Kenichi Shibano
- Faculty of Veterinary Medicine Okayama University of Science Imabari Japan
| | - Taketoshi Asanuma
- Faculty of Veterinary Medicine Okayama University of Science Imabari Japan
| | - Hitoshi Kitagawa
- Faculty of Veterinary Medicine Okayama University of Science Imabari Japan
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6
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Hasegawa H, Hayashi K, Akita Y, Une Y, Huffman MA, Matsuura K. DEVELOPMENTAL STAGES OF GRASSENEMA PROCAVIAE PETTER, 1959 (COSMOCERCOIDEA: ATRACTIDAE) FOUND IN THE STOMACH OF CAPE HYRAX (PROCAVIA CAPENSIS). J Parasitol 2022; 108:366-373. [PMID: 35925595 DOI: 10.1645/21-117] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [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: 11/10/2022] Open
Abstract
Morphological examination was made of the larval forms of Grassenema procaviae (Cosmocercoidea: Atractidae), an autoinfective and viviparous nematode parasite in the stomach of Cape hyrax (Procavia capensis). Three different larval stages (second-, third- and fourth-stages), and the adult stage were found among the worms collected at necropsy of 3 hosts, which were reared in a zoo in Japan. Molting phases between the larval stages and the final molt to the adult stage were also observed. It was considered that the gravid female delivers the second-stage larva, which develops to the adult stage through 3 molts. The cephalic structure was identical throughout the second to adult stages; all with transparent filaments extending from the mouth. Because starch grains were frequently found attached to the filaments and the worm intestinal lumen also contained starch grains ingested, the filaments were surmised to act as nutrient catchers.
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Affiliation(s)
- Hideo Hasegawa
- Department of Biomedicine, Faculty of Medicine, Oita University, 1-1 Idaigaoka, Hasama, Yufu, Oita 879-5593, Japan
| | - Kei Hayashi
- Laboratory of Parasitology, Faculty of Veterinary Medicine, Okayama University of Science, 1-3 Ikoinooka, Imabari, Ehime 794-8555, Japan
| | - Yuko Akita
- Nagasaki Bio Park, 2291-1 Nakayamago, Seihicho, Saikai, Nagasaki, 851-3302, Japan
| | - Yumi Une
- Laboratory of Pathology, Faculty of Veterinary Medicine, Okayama University of Science, 1-3 Ikoinooka, Imabari, Ehime 794-8555, Japan
| | - Michael A Huffman
- Wildlife Research Center, Inuyama Campus, Kyoto University, 41-2 Kanrin, Inuyama, Aichi 484-8506, Japan
| | - Keiko Matsuura
- Department of Biomedicine, Faculty of Medicine, Oita University, 1-1 Idaigaoka, Hasama, Yufu, Oita 879-5593, Japan
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7
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Nagayasu E, Takaki Y, Takami Y, Yoshida A, Une Y, Maruyama H. Strongyloidiasis in recently arrived captive-bred meerkats imported to Japan. J Exot Pet Med 2022. [DOI: 10.1053/j.jepm.2021.10.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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8
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Yamada K, Yokoyama T, Aihara N, Une Y, Sato R. Role of autopsy imaging-computed tomography in the post-mortem study of farm animals. Vet Rec Open 2021; 8:e1. [PMID: 33981435 PMCID: PMC8109047 DOI: 10.1002/vro2.1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2020] [Revised: 10/23/2020] [Accepted: 12/28/2020] [Indexed: 11/21/2022] Open
Abstract
BACKGROUND Autopsy imaging (Ai) is used to determine the cause of death, providing pre-dissection information. Ai is often used in the field of human forensic medicine but has never been applied on farm animals. METHODS Ai-computed tomography (CT) was performed before necropsy for farm animals (one goat, one ox, one cow and three calves) that died or were euthanised. RESULTS Ai-CT findings of rib fractures (case 1), urethral calculi (case 2), multiple osteolytic bone lesions (case 3 and 4) and hair balls (case 4) were confirmed by dissection. However, a tentative diagnosis of actinomycosis was made in an ox (case 5) using antemortem radiography and Ai-CT, and the mass was identified as ameloblastic fibro-odontoma on histological examination. A tentative diagnosis of maxillary abscess was made from antemortem radiography in a cow (case 6); however, the lesion was shown to be maxillary neoplasia on Ai-CT. The mass was identified as hemangiosarcoma on histopathological examination. CONCLUSION Ai is helpful in pathological examination because the specific findings are known before the dissection, the lesions can be pinpointed in the pathological dissection, facilitating workflow; furthermore, the oversight of lesions can be reduced. In addition, Ai-CT images, including three-dimensional images and a three-dimensional printed model, allowed an easy understanding of pathology among students and farmers. Ai-CT for farm animals represents a novel option for veterinary education.
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Affiliation(s)
- Kazutaka Yamada
- School of Veterinary MedicineAzabu UniversitySagamiharaJapan
| | - Taiki Yokoyama
- Veterinary Teaching HospitalAzabu UniversitySagamiharaJapan
| | - Naoyuki Aihara
- School of Veterinary MedicineAzabu UniversitySagamiharaJapan
| | - Yumi Une
- Faculty of Veterinary MedicineOkayama University of ScienceImabariJapan
| | - Reiichiro Sato
- Faculty of AgricultureUniversity of MiyazakiMiyazakiJapan
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9
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Kadekaru S, Shimoda H, Kuwabara K, Une Y. Spontaneous multiple cutaneous mixed tumors in Japanese giant salamander Andrias japonicus. Dis Aquat Organ 2021; 146:157-164. [PMID: 34672265 DOI: 10.3354/dao03627] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
We examined 7 cutaneous mixed tumors in 2 wild-captured Japanese giant salamanders Andrias japonicus. The tumors were either already present and/or increased in size, or newly occurred during capativity. We sampled the 7 tumors from these animals and 3 verrucose protrusions from 3 unaffected animals, as controls, and examined them pathologically and virologically. The tumors (5 mm to 4 cm in size) were papillary protrusions or pendulated on the skin surface. The cut surface of the tumors was white, lobulated, partially hard, and contained mucus. All tumors presented similar histological characteristics of a hyaline structure and exhibited biphasic proliferation, with neoplastic epithelial cells partially composing the pseudo-ductal structure and staining positive for cytokeratin AE1/AE3. Vimentin 3B4-positive blast-like mesenchymal cells proliferated to fill the gaps in the epithelial components. Transition from unique mucous gland to neoplastic tissue was observed. The hyaline structure was stained blue by AZAN stain, Alcian blue-periodic acid-Schiff (PAS) double stain, and toluidine blue (TB) stain of pH 7.0, but was unstained by TB with pH values of 4.1 and 2.5. The mucus in the neoplastic tissue and in the mucous gland in verrucose protrusions was stained blue by Alcian blue-PAS double stain; TB staining at pH 7.0, 4.1, and 2.5 revealed metachromasy. No virus was detected in the tumors. The 7 tumors were diagnosed as cutaneous mixed tumors, and it was confirmed that the neoplastic cells originated from the mucous gland in the dermis. The biological behavior and pathological development of tumors should be elucidated because the tumors have the potential to negatively affect A. japonicus.
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Affiliation(s)
- Sho Kadekaru
- The Laboratory of Veterinary Pathology, Faculty of Veterinary Medicine, Okayama University of Science, Imabari 794-8555, Japan
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10
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Takami Y, Nam KO, Takaki Y, Kadekaru S, Hemmi C, Hosoya T, Une Y. First report of ophidiomycosis in Asia caused by Ophidiomyces ophiodiicola in captive snakes in Japan. J Vet Med Sci 2021; 83:1234-1239. [PMID: 34176821 PMCID: PMC8437724 DOI: 10.1292/jvms.21-0177] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Ophidiomycosis is an emerging infectious disease caused by the fungus
Ophidiomyces ophiodiicola, which has been affecting wild and captive
snakes in North America, Europe, and Australia. We report 12 cases of suspected
ophidiomycosis in captive colubrid snakes in Japan. Pathological and microbiological
examinations were performed, and the results confirmed the diagnosis of ophidiomycosis in
two snakes, which indicated that the remaining sympatrically raised snakes also had
ophidiomycosis since they exhibited similar lesions. This is the first report of
ophidiomycosis in Asia caused by O. ophiodiicola. To prevent the
expansion of ophidiomycosis in the natural environment in Japan, there is a need to
evaluate the ophidiomycosis carrier status of imported snakes, the pathogenicity of the
infection in native snakes, and the prevalence and distribution of O.
ophiodiicola in wild and captive snakes. Measures also must be taken to prevent
endemicity globally.
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Affiliation(s)
- Yoshinori Takami
- Verts Animal Hospital, 4-3-1 Morooka, Hakata-ku, Fukuoka-shi, Fukuoka 812-0894, Japan
| | - Kyung-Ok Nam
- Department of Botany, National Museum of Nature and Science, Tsukuba-shi, Ibaraki 305-0005, Japan
| | - Youki Takaki
- Verts Animal Hospital, 4-3-1 Morooka, Hakata-ku, Fukuoka-shi, Fukuoka 812-0894, Japan
| | - Sho Kadekaru
- Laboratory of Veterinary Pathology, Faculty of Veterinary Medicine, Okayama University of Science, Imabari, Ehime 794-8555, Japan
| | - Chizuka Hemmi
- Laboratory of Veterinary Pathology, Faculty of Veterinary Medicine, Okayama University of Science, Imabari, Ehime 794-8555, Japan
| | - Tsuyoshi Hosoya
- Department of Botany, National Museum of Nature and Science, Tsukuba-shi, Ibaraki 305-0005, Japan
| | - Yumi Une
- Laboratory of Veterinary Pathology, Faculty of Veterinary Medicine, Okayama University of Science, Imabari, Ehime 794-8555, Japan
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11
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Takaki Y, Kadekaru S, Takami Y, Yoshida A, Maruyama H, Une Y, Nagayasu E. First demonstration of Strongyloides parasite from an imported pet meerkat - Possibly a novel species in the stercoralis/procyonis group. Parasitol Int 2021; 84:102399. [PMID: 34077794 DOI: 10.1016/j.parint.2021.102399] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2021] [Revised: 05/23/2021] [Accepted: 05/24/2021] [Indexed: 11/30/2022]
Abstract
Strongyloides is a genus of parasitic nematodes of vertebrates that contains over 50 species, each with a variable host range. A recent molecular phylogenetic analysis on this genus showed that Strongyloides spp. from various carnivore hosts form a strongly supported clade together with Strongyloides stercoralis, a major pathogen of humans and dogs (named the "stercoralis/procyonis group"). In the present study, we obtained DNA sequencing data of Strongyloides sp. isolated from an imported meerkat (Suricata suricatta). Based on the phylogenetic analysis, we considered this a new member of the stercoralis/procyonis group. This study represents the first isolation and molecular characterization of a Strongyloides species from hosts belonging to the family Herpestidae (mongooses and meerkat). However, whether the meerkat serves as a natural host of this Strongyloides species remains to be investigated.
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Affiliation(s)
- Youki Takaki
- Verts Animal Hospital, 4-3-1 Morooka, Hakata-Ku Fukuoka-shi, Fukuoka 812-0894, Japan
| | - Sho Kadekaru
- Laboratory of Veterinary Pathology, Department of Veterinary Medicine, Okayama University of Science, 794-8555, Japan
| | - Yoshinori Takami
- Verts Animal Hospital, 4-3-1 Morooka, Hakata-Ku Fukuoka-shi, Fukuoka 812-0894, Japan
| | - Ayako Yoshida
- Laboratory of Veterinary Parasitic Diseases, Department of Veterinary Sciences, Faculty of Agriculture, University of Miyazaki, 1-1 Gakuen-kibanadai-nishi, 889-2192 Miyazaki, Japan; Center for Animal Disease Control, University of Miyazaki, 1-1 Gakuen-kibanadai-nishi, 889-2192 Miyazaki, Japan
| | - Haruhiko Maruyama
- Center for Animal Disease Control, University of Miyazaki, 1-1 Gakuen-kibanadai-nishi, 889-2192 Miyazaki, Japan; Division of Parasitology, Department of Infectious Diseases, Faculty of Medicine, University of Miyazaki, 5200 Kihara, Kiyotake, 889-1692 Miyazaki, Japan
| | - Yumi Une
- Laboratory of Veterinary Pathology, Department of Veterinary Medicine, Okayama University of Science, 794-8555, Japan
| | - Eiji Nagayasu
- Division of Parasitology, Department of Infectious Diseases, Faculty of Medicine, University of Miyazaki, 5200 Kihara, Kiyotake, 889-1692 Miyazaki, Japan.
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12
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Saito T, Hayashi K, Hayashi K, Akita Y, Une Y, Kuroki T, Shibahara T, Takashima Y. Morphological observation and first molecular characterization of Grassenema procaviae Petter, 1959 (Cosmocercoidea: Atractidae) in the stomach of Cape hyrax (Procavia capensis) raised in a zoo in Japan. Parasitol Int 2021; 84:102385. [PMID: 34015519 DOI: 10.1016/j.parint.2021.102385] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2020] [Revised: 05/13/2021] [Accepted: 05/14/2021] [Indexed: 11/17/2022]
Abstract
The superfamily Cosmocercoidea comprises three families: Cosmocericidae, Kathlaniidae and Atractidae. Information on the nucleotide sequences of the Cosmocercoidea is quite limited, and the molecular classification of the whole superfamily has been slow to progress. The genus Grassenema of the family Atractidae is a parasitic nematode group that occurs in the digestive tract of hyraxes and includes three species: Grassenema procaviae, G. dendrohyraci, and G. hyracis. The type species of the genus, G. procaviae, was isolated from the digestive tract of Cape hyraxes (Procavia capensis) and has the potential to cause gastric ulcers. Although G. procaviae is a common parasite of Cape hyraxes, no genetic information for the parasite is currently available. In this study, we obtained the first genomic sequences of G. procaviae and performed detailed morphological observations. Furthermore, molecular phylogenetic analysis was performed, and the taxonomic position of the parasite was evaluated using 18S and 28S rDNA sequences. Those data will be useful for molecular identification of G. procaviae and future phylogenetic analysis within the Atractidae.
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Affiliation(s)
- Taizo Saito
- The United Graduate School of Veterinary Sciences, Gifu University, 1-1 Yanagido, Gifu 501-1193, Japan
| | - Kei Hayashi
- Laboratory of Parasitology, Faculty of Veterinary Medicine, Okayama University of Science, 1-3 Ikoinooka, Imabari 794-8555, Japan.
| | - Kaoru Hayashi
- Laboratory of Parasitology, Faculty of Veterinary Medicine, Okayama University of Science, 1-3 Ikoinooka, Imabari 794-8555, Japan
| | - Yuko Akita
- Nagasaki Bio Park, 2291-1 Nakayamago, Seihicho, Saikai, Nagasaki 851-3302, Japan
| | - Yumi Une
- Laboratory of Pathology, Faculty of Veterinary Medicine, Okayama University of Science, 1-3 Ikoinooka, Imabari 794-8555, Japan
| | - Toshiro Kuroki
- Laboratory of Parasitology, Faculty of Veterinary Medicine, Okayama University of Science, 1-3 Ikoinooka, Imabari 794-8555, Japan
| | - Toshiyuki Shibahara
- Laboratory of Parasitology, Faculty of Veterinary Medicine, Okayama University of Science, 1-3 Ikoinooka, Imabari 794-8555, Japan
| | - Yasuhiro Takashima
- The United Graduate School of Veterinary Sciences, Gifu University, 1-1 Yanagido, Gifu 501-1193, Japan; Department of Veterinary Parasitological Diseases, Gifu University, Yanagido 1-1, Gifu 501-1193, Japan
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13
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Kutara K, Kadekaru S, Sugisawa R, Une Y. Pyogenic meningitis and trigeminal neuritis secondary to periodontogenic paranasal sinusitis in a red deer (Cervus elaphus). J Vet Med Sci 2021; 83:947-951. [PMID: 33840720 PMCID: PMC8267206 DOI: 10.1292/jvms.21-0029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
An adult female red deer died of a severe seizure and dysbasia. Postmortem computed
tomography (CT) and magnetic resonance imaging (MRI) were performed. On CT, deciduous
right maxillary second and third premolar teeth were observed, and the right infraorbital
canal was disrupted. MRI showed that the right trigeminal nerve was enlarged and the right
subarachnoid cavity was occupied by fluid and gas. On gross examination, the right
paranasal sinus, swollen muscles of the orbit and tonsils, right trigeminal nerve, and
right cerebrum surface contained a yellowish-white, cheese-like pus. Based on these
findings, the deer was believed to have developed pyogenic meningitis caused by a
neuropathic infection secondary to periodontogenic paranasal sinusitis.
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Affiliation(s)
- Kenji Kutara
- Faculty of Veterinary Medicine, Okayama University of Science, 1-3 Ikoinooka, Imabari, Ehime 794-8555, Japan
| | - Sho Kadekaru
- Faculty of Veterinary Medicine, Okayama University of Science, 1-3 Ikoinooka, Imabari, Ehime 794-8555, Japan
| | - Reiko Sugisawa
- Tohoku Safari Park, 1 Sawamatsukura, Nihonmatsu, Fukushima 964-0088, Japan
| | - Yumi Une
- Faculty of Veterinary Medicine, Okayama University of Science, 1-3 Ikoinooka, Imabari, Ehime 794-8555, Japan
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14
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Abstract
Twenty-three of 42 European rabbits (Oryctolagus cuniculus), belonging to the same rabbit colony, died in March 2020 (55% mortality) in Chiba prefecture, Japan. The disease course was extremely acute without indicators of death or hemorrhage. Necropsy revealed liver swelling, discoloration, cloudiness and fragility, and pulmonary edema. Histologically, severe hepatocellular necrosis (mainly peripheral) and intra-glomerular capillary hyalin thrombi were observed. On molecular-biological examination, reverse transcription polymerase chain reaction analysis of RNA from tissues detected a rabbit hemorrhagic disease virus, confirmed as a RHDV-2 VP60 fragment, which shared 99.42% nucleotide identity with the homologous fragment of RHDV-2 German isolate by nucleotide sequence analysis. This report shows the outbreak of rabbit hemorrhagic disease caused by RHDV-2, an emerging infectious disease, in Japan.
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Affiliation(s)
- Hiroto Fukui
- Laboratory of Veterinary Pathology, Faculty of Veterinary Medicine, Okayama University of Science, 1-3 Ikoino-oka, Imabari, Ehime 794-8555, Japan
| | - Hiroshi Shimoda
- Laboratory of Veterinary Microbiology, Joint Faculty of Veterinary Medicine, Yamaguchi University, 1677-1 Yoshida, Yamaguchi, Yamaguchi 753-8515, Japan
| | - Sho Kadekaru
- Laboratory of Veterinary Pathology, Faculty of Veterinary Medicine, Okayama University of Science, 1-3 Ikoino-oka, Imabari, Ehime 794-8555, Japan
| | - Chizuka Henmi
- Laboratory of Veterinary Pathology, Faculty of Veterinary Medicine, Okayama University of Science, 1-3 Ikoino-oka, Imabari, Ehime 794-8555, Japan
| | - Yumi Une
- Laboratory of Veterinary Pathology, Faculty of Veterinary Medicine, Okayama University of Science, 1-3 Ikoino-oka, Imabari, Ehime 794-8555, Japan
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15
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Takaichi Y, Chambers JK, Shiroma-Kohyama M, Haritani M, Une Y, Yamato O, Nakayama H, Uchida K. Feline Spongy Encephalopathy With a Mutation in the ASPA Gene. Vet Pathol 2021; 58:705-712. [PMID: 33779415 DOI: 10.1177/03009858211002176] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [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: 11/16/2022]
Abstract
Canavan disease is an autosomal recessive leukodystrophy caused by mutations in the gene encoding aspartoacylase (ASPA), which hydrolyses N-acetylaspartate (NAA) to acetate and aspartate. A similar feline neurodegenerative disease associated with a mutation in the ASPA gene is reported herein. Comprehensive clinical, genetic, and pathological analyses were performed on 4 affected cats. Gait disturbance and head tremors initially appeared at 1 to 19 months of age. These cats eventually exhibited dysstasia and seizures and died at 7 to 53 months of age. Magnetic resonance imaging of the brain revealed diffuse symmetrical intensity change of the cerebral cortex, brainstem, and cerebellum. Gas chromatography-mass spectrometry analysis of urine showed significant excretion of NAA. Genetic analysis of the 4 affected cats identified a missense mutation (c.859G>C) in exon 6 of the ASPA gene, which was not detected in 4 neurologically intact cats examined as controls. Postmortem analysis revealed vacuolar changes predominantly distributed in the gray matter of the cerebrum and brain stem as well as in the cerebellar Purkinje cell layer. Immunohistochemically, these vacuoles were surrounded by neurofilaments and sometimes contained MBP- and Olig2-positive cells. Ultrastructurally, a large number of intracytoplasmic vacuoles containing mitochondria and electron-dense granules were detected in the cerebral cortex. All 4 cats were diagnosed as spongy encephalopathy with a mutation in the ASPA gene, a syndrome analogous to human Canavan disease. The histopathological findings suggest that feline ASPA deficiency induces intracytoplasmic edema in neurons and oligodendrocytes, resulting in spongy degeneration of the central nervous system.
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Affiliation(s)
| | | | | | | | - Yumi Une
- Okayama University of Science, Ehime, Japan
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16
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Tamukai K, Minami S, Kadekaru S, Mitsui I, Maeda K, Une Y. New canine parvovirus 2a infection in an imported Asian small-clawed otter (Aonyx cinereus) in Japan. J Vet Med Sci 2021; 83:507-511. [PMID: 33473050 PMCID: PMC8025432 DOI: 10.1292/jvms.20-0480] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023] Open
Abstract
Post-import from the Republic of Indonesia to Japan in 2017, two juvenile, captive bred Asian small-clawed otters (Aonyx cinereus) exhibited gastrointestinal symptoms, including vomiting, diarrhea, and hematemesis, and died. One of them was examined postmortem. Microscopically, the small intestinal mucosa was necrotic with crypts lined by regenerating large epithelial cells. A gastric cardiac mucosal ulcerative lesion containing fungal yeasts and pseudohyphae morphologically indicated Candida spp. The lymph nodes exhibited marked lymphoid depletion. Canine parvovirus 2 (CPV-2) was isolated from an oral swab, and virus protein 2 (VP2) gene sequencing revealed new CPV-2a. To our knowledge, this is the first new CPV-2a infection report in Asian small-clawed otters. This infection should be considered in gastrointestinal symptom-related cases in this species.
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Affiliation(s)
- Kenichi Tamukai
- Den-en-chofu Animal Hospital, 2-1-3 Denenchofu, Ota-ku, Tokyo 145-0071, Japan
| | - Shohei Minami
- Laboratory of Veterinary Microbiology, Joint Faculty of Veterinary Medicine, Yamaguchi University, 1677-1 Yoshida-shi, Yamaguchi 753-8515, Japan
| | - Sho Kadekaru
- Laboratory of Veterinary Pathology, Faculty of Veterinary Medicine, Okayama University of Science, 1-3 Ikoino-oka, Imabari-shi, Ehime 794-8555, Japan
| | - Ikki Mitsui
- Laboratory of Veterinary Pathology, Faculty of Veterinary Medicine, Okayama University of Science, 1-3 Ikoino-oka, Imabari-shi, Ehime 794-8555, Japan
| | - Ken Maeda
- Department of Veterinary Science, National Institute of Infectious Diseases, 1-23-1 Toyama, Shinjuku-ku, Tokyo 162-8640, Japan
| | - Yumi Une
- Laboratory of Veterinary Pathology, Faculty of Veterinary Medicine, Okayama University of Science, 1-3 Ikoino-oka, Imabari-shi, Ehime 794-8555, Japan
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17
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Ono T, Hisaeda K, Inoue Y, Yamada Y, Shibano K, Mitsui I, Henmi C, Une Y, Hayashi H, Roh S, Nohara M, Uchida E, Nagahata H. Forestomach developmental failure in an 11-month-old Japanese Black steer with severely retarded growth and chronic ruminal tympany. J Vet Med Sci 2021; 83:220-225. [PMID: 33473049 PMCID: PMC7972897 DOI: 10.1292/jvms.20-0448] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/05/2022] Open
Abstract
This study reports findings from the pathological examination of the forestomach of an
11-month-old Japanese Black steer with severely retarded growth (41% of expected weight)
and chronic ruminal tympany. The ruminal papillae were weakly formed (0.3–0.5 cm long) and
unevenly distributed. The cellulae and cristae reticuli were underdeveloped; the cristae
were 0.4–0.7 cm in height and milky white. The keratinized layer in the stratified
squamous epithelium was thickened. Ruminal pH was 5.25, and ruminal volatile fatty acid
concentration was 11.7 mM. The steer’s severely retarded growth was considered to be
caused by malnutrition due to developmental and functional failure of the forestomach.
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Affiliation(s)
- Tetsushi Ono
- Farm Animal Medicine, Faculty of Veterinary Medicine, Okayama University of Science, Ikoinooka 1-3, Imabari, Ehime 794-8555, Japan
| | - Keiichi Hisaeda
- Department of Veterinary Associated Science, Faculty of Veterinary Medicine, Okayama University of Science, Ikoinooka 1-3, Imabari, Ehime 794-8555, Japan
| | - Yoichi Inoue
- Farm Animal Medicine, Faculty of Veterinary Medicine, Okayama University of Science, Ikoinooka 1-3, Imabari, Ehime 794-8555, Japan
| | - Yutaka Yamada
- Farm Animal Medicine, Faculty of Veterinary Medicine, Okayama University of Science, Ikoinooka 1-3, Imabari, Ehime 794-8555, Japan
| | - Kenichi Shibano
- Farm Animal Medicine, Faculty of Veterinary Medicine, Okayama University of Science, Ikoinooka 1-3, Imabari, Ehime 794-8555, Japan
| | - Ikki Mitsui
- Veterinary Pathology, Faculty of Veterinary Medicine, Okayama University of Science, Ikoinooka 1-3, Imabari, Ehime 794-8555, Japan
| | - Chizuka Henmi
- Veterinary Pathology, Faculty of Veterinary Medicine, Okayama University of Science, Ikoinooka 1-3, Imabari, Ehime 794-8555, Japan
| | - Yumi Une
- Veterinary Pathology, Faculty of Veterinary Medicine, Okayama University of Science, Ikoinooka 1-3, Imabari, Ehime 794-8555, Japan
| | - Hideaki Hayashi
- Veterinary Physiology, School of Veterinary Medicine, Rakuno Gakuen University, Bunkyodai-Midori 582, Ebetsu, Hokkaido 069-8501, Japan
| | - Sanggun Roh
- Laboratory of Animal Physiology, Graduate School of Agricultural Science, Tohoku University, Aoba, Sendai, Miyagi 980-8572, Japan
| | - Masakatsu Nohara
- Department of Veterinary Associated Science, Faculty of Veterinary Medicine, Okayama University of Science, Ikoinooka 1-3, Imabari, Ehime 794-8555, Japan
| | - Eiji Uchida
- Department of Veterinary Associated Science, Faculty of Veterinary Medicine, Okayama University of Science, Ikoinooka 1-3, Imabari, Ehime 794-8555, Japan
| | - Hajime Nagahata
- Department of Veterinary Associated Science, Faculty of Veterinary Medicine, Okayama University of Science, Ikoinooka 1-3, Imabari, Ehime 794-8555, Japan
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18
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Tamukai K, Minami S, Kurihara R, Shimoda H, Mitsui I, Maeda K, Une Y. Molecular evidence for vaccine-induced canine distemper virus and canine adenovirus 2 coinfection in a fennec fox. J Vet Diagn Invest 2020; 32:598-603. [PMID: 32560597 DOI: 10.1177/1040638720934809] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [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: 11/15/2022] Open
Abstract
A 61-d-old fennec fox (Vulpes zerda), 11 d after receiving a multivalent, modified-live virus vaccine containing canine distemper virus (CDV), canine adenovirus 2 (CAdV-2), parainfluenza virus, parvovirus, and canine coronavirus, developed oculonasal discharge, and subsequently convulsions, and hemoptysis, and died. Microscopic changes in the cerebrum were evident, including neuronal degeneration and necrosis; intracytoplasmic eosinophilic inclusion bodies were observed in astrocytes. CDV was detected in the brain tissue by immunohistochemistry. Pulmonary lesions of multifocal necrotizing bronchopneumonia had Cowdry type A intranuclear inclusions in the bronchial epithelial cells. Electron microscopy revealed crystalline arrays of adenovirus-like particles within the intranuclear inclusions. Additionally, the hemagglutinin gene of CDV and the CAdV-2 DNA polymerase gene were detected in the fennec fox; sequence analysis showed 100% identity with those of the vaccine strain viruses. To our knowledge, vaccine-induced CDV and CAdV-2 coinfections using molecular analysis have not been reported previously. Therefore, vaccine strains should be considered prior to CDV vaccination in nondomestic carnivores.
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Affiliation(s)
- Kenichi Tamukai
- Den-en-chofu Animal Hospital, Ota-ku, Tokyo, Japan (Tamukai).,Laboratory of Veterinary Microbiology, Joint Faculty of Veterinary Medicine, Yamaguchi University, Yamaguchi, Japan (Minami, Shimoda).,Laboratory of Veterinary Pathology, Azabu University, Kanagawa, Japan (Kurihara).,Laboratory of Veterinary Pathology, Okayama University of Science, Imabari, Ehime, Japan (Mitsui, Une).,Department of Veterinary Science, National Institute of Infectious Diseases, Shinjuku-ku, Tokyo, Japan (Maeda)
| | - Shohei Minami
- Den-en-chofu Animal Hospital, Ota-ku, Tokyo, Japan (Tamukai).,Laboratory of Veterinary Microbiology, Joint Faculty of Veterinary Medicine, Yamaguchi University, Yamaguchi, Japan (Minami, Shimoda).,Laboratory of Veterinary Pathology, Azabu University, Kanagawa, Japan (Kurihara).,Laboratory of Veterinary Pathology, Okayama University of Science, Imabari, Ehime, Japan (Mitsui, Une).,Department of Veterinary Science, National Institute of Infectious Diseases, Shinjuku-ku, Tokyo, Japan (Maeda)
| | - Rio Kurihara
- Den-en-chofu Animal Hospital, Ota-ku, Tokyo, Japan (Tamukai).,Laboratory of Veterinary Microbiology, Joint Faculty of Veterinary Medicine, Yamaguchi University, Yamaguchi, Japan (Minami, Shimoda).,Laboratory of Veterinary Pathology, Azabu University, Kanagawa, Japan (Kurihara).,Laboratory of Veterinary Pathology, Okayama University of Science, Imabari, Ehime, Japan (Mitsui, Une).,Department of Veterinary Science, National Institute of Infectious Diseases, Shinjuku-ku, Tokyo, Japan (Maeda)
| | - Hiroshi Shimoda
- Den-en-chofu Animal Hospital, Ota-ku, Tokyo, Japan (Tamukai).,Laboratory of Veterinary Microbiology, Joint Faculty of Veterinary Medicine, Yamaguchi University, Yamaguchi, Japan (Minami, Shimoda).,Laboratory of Veterinary Pathology, Azabu University, Kanagawa, Japan (Kurihara).,Laboratory of Veterinary Pathology, Okayama University of Science, Imabari, Ehime, Japan (Mitsui, Une).,Department of Veterinary Science, National Institute of Infectious Diseases, Shinjuku-ku, Tokyo, Japan (Maeda)
| | - Ikki Mitsui
- Den-en-chofu Animal Hospital, Ota-ku, Tokyo, Japan (Tamukai).,Laboratory of Veterinary Microbiology, Joint Faculty of Veterinary Medicine, Yamaguchi University, Yamaguchi, Japan (Minami, Shimoda).,Laboratory of Veterinary Pathology, Azabu University, Kanagawa, Japan (Kurihara).,Laboratory of Veterinary Pathology, Okayama University of Science, Imabari, Ehime, Japan (Mitsui, Une).,Department of Veterinary Science, National Institute of Infectious Diseases, Shinjuku-ku, Tokyo, Japan (Maeda)
| | - Ken Maeda
- Den-en-chofu Animal Hospital, Ota-ku, Tokyo, Japan (Tamukai).,Laboratory of Veterinary Microbiology, Joint Faculty of Veterinary Medicine, Yamaguchi University, Yamaguchi, Japan (Minami, Shimoda).,Laboratory of Veterinary Pathology, Azabu University, Kanagawa, Japan (Kurihara).,Laboratory of Veterinary Pathology, Okayama University of Science, Imabari, Ehime, Japan (Mitsui, Une).,Department of Veterinary Science, National Institute of Infectious Diseases, Shinjuku-ku, Tokyo, Japan (Maeda)
| | - Yumi Une
- Den-en-chofu Animal Hospital, Ota-ku, Tokyo, Japan (Tamukai).,Laboratory of Veterinary Microbiology, Joint Faculty of Veterinary Medicine, Yamaguchi University, Yamaguchi, Japan (Minami, Shimoda).,Laboratory of Veterinary Pathology, Azabu University, Kanagawa, Japan (Kurihara).,Laboratory of Veterinary Pathology, Okayama University of Science, Imabari, Ehime, Japan (Mitsui, Une).,Department of Veterinary Science, National Institute of Infectious Diseases, Shinjuku-ku, Tokyo, Japan (Maeda)
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19
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Mizukami K, Uchiyama J, Igarashi H, Murakami H, Osumi T, Shima A, Ishiahra G, Nasukawa T, Une Y, Sakaguchi M. Age-related analysis of the gut microbiome in a purebred dog colony. FEMS Microbiol Lett 2020; 366:5484838. [PMID: 31049554 DOI: 10.1093/femsle/fnz095] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2019] [Accepted: 05/01/2019] [Indexed: 12/17/2022] Open
Abstract
Dogs are model animals that can be used to study the gut microbiome. Although the gut microbiome is assumed to be closely related to aging, information pertaining to this relationship in dogs is limited. Here, we examined the association between the canine gut microbiome and age via a bacterial 16S rRNA gene amplicon sequence analysis in a colony of 43 Japanese purebred Shiba Inu dogs. We found that microbial diversity tended to decrease with aging. A differential abundance analysis showed an association of a single specific microbe with aging. The age-related coabundance network analysis showed that two microbial network modules were positively and negatively associated with aging, respectively. These results suggest that the dog gut microbiome is likely to vary with aging.
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Affiliation(s)
- Keijiro Mizukami
- School of Veterinary Medicine, Azabu University, Fuchinobe 1-17-71, Chuo-ku, Sagamihara, Kanagawa 252-0206, Japan
| | - Jumpei Uchiyama
- School of Veterinary Medicine, Azabu University, Fuchinobe 1-17-71, Chuo-ku, Sagamihara, Kanagawa 252-0206, Japan
| | - Hirotaka Igarashi
- School of Veterinary Medicine, Azabu University, Fuchinobe 1-17-71, Chuo-ku, Sagamihara, Kanagawa 252-0206, Japan
| | - Hironobu Murakami
- School of Veterinary Medicine, Azabu University, Fuchinobe 1-17-71, Chuo-ku, Sagamihara, Kanagawa 252-0206, Japan
| | - Takafumi Osumi
- Animal Medical Center, Tokyo University of Agriculture and Technology, Saiwai-cho 3-5-8, Fuchu, Tokyo 183-8509, Japan
| | - Ayaka Shima
- Anicom Specialty Medical Institute Inc., Nishi-shinjuku 8-17-1, Shinjuku, Tokyo 160-0023, Japan
| | - Genki Ishiahra
- Anicom Specialty Medical Institute Inc., Nishi-shinjuku 8-17-1, Shinjuku, Tokyo 160-0023, Japan
| | - Tadahiro Nasukawa
- School of Veterinary Medicine, Azabu University, Fuchinobe 1-17-71, Chuo-ku, Sagamihara, Kanagawa 252-0206, Japan
| | - Yumi Une
- School of Veterinary Medicine, Azabu University, Fuchinobe 1-17-71, Chuo-ku, Sagamihara, Kanagawa 252-0206, Japan.,Faculty of Veterinary Medicine, Okayama University of Science, Ikoinooka 1-3, Imabari, Ehime 794-8555, Japan
| | - Masahiro Sakaguchi
- School of Veterinary Medicine, Azabu University, Fuchinobe 1-17-71, Chuo-ku, Sagamihara, Kanagawa 252-0206, Japan
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20
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Kamada T, Une Y, Matsui K, Fuma S, Ikeda T, Okamoto M. Cloning of Hynobius lichenatus (Tohoku hynobiid salamander) p53 and analysis of its expression in response to radiation. BMC Genet 2020; 21:53. [PMID: 32434469 PMCID: PMC7238597 DOI: 10.1186/s12863-020-00856-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2019] [Accepted: 05/11/2020] [Indexed: 11/28/2022] Open
Abstract
Background Caudata species such as salamanders are easily affected by environmental changes, which can drastically reduce their population. The effects of acute X-rays and chronic γ-irradiation on Hynobius lichenatus, the Japanese Tohoku hynobiid salamander, are known. However, the expression of radiation-inducible genes, such as the DNA-damage checkpoint response gene p53, has not been analyzed in H. lichenatus. This has not occurred because there is no established method for mRNA quantification in H. lichenatus due to a lack of information on available nucleotide sequences corresponding to both radiation-inducible genes and endogenous control genes such as ACTB (β-actin). Results In this study, we aimed to evaluate the effects of radiation on gene expression in H. lichenatus. Using RNA extracted from irradiated salamanders, we performed rapid amplification of cDNA ends (RACE) and cloned H. lichenatus β-actin, glyceraldehyde-3-phosphate dehydrogenase (GAPDH) and p53. We confirmed that the cloned cDNAs were able to synthesize salamander proteins by western blotting after transfection into cultured HEK293 cells. Proliferation assays using HEK293 cells stably expressing H. lichenatus p53 protein showed that this protein has antiproliferative effects, similar to that of mammalian p53. Furthermore, RT-qPCR analysis using gene-specific primers revealed that p53 mRNA expression in H. lichenatus was upregulated upon exposure to radiation. Conclusion Our results suggest that H. lichenatus p53 protein take an important role in regulating the cellular responses to various stimuli as mammalian p53 does. Furthermore, our study provides novel data to select appropriate primers to analyze internal control mRNA expression in H. lichenatus and to evaluate p53 expression as a marker of radiation and environmental stimuli.
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Affiliation(s)
- Toshiki Kamada
- Laboratory of Veterinary Immunology, Department of Veterinary Medicine, School of Veterinary Medicine, Azabu University, 1-17-71 Fuchinobe, Chuo-ku, Sagamihara, Kanagawa, 252-5201, Japan
| | - Yumi Une
- Laboratory of Veterinary Pathology, Faculty of Veterinary Medicine, Imabari campus, Okayama University of Science, 1-3 Ikoinooka, Imabari, Ehime, 794-8555, Japan
| | - Kumi Matsui
- Laboratory of Veterinary Physiology 1, Department of Veterinary Medicine, School of Veterinary Medicine, Azabu University, 1-17-71 Fuchinobe, Chuo-ku, Sagamihara, Kanagawa, 252-5201, Japan
| | - Shoichi Fuma
- Department of Radioecology and Fukushima Project, Center for Advanced Radiation Emergency Medicine, Quantum Medical Science Directorate, National Institutes for Quantum and Radiological Science and Technology, 4-9-1 Anagawa, Inage-ku, Chiba, 263-8555, Japan
| | - Teruo Ikeda
- Laboratory of Veterinary Immunology, Department of Veterinary Medicine, School of Veterinary Medicine, Azabu University, 1-17-71 Fuchinobe, Chuo-ku, Sagamihara, Kanagawa, 252-5201, Japan
| | - Mariko Okamoto
- Laboratory of Veterinary Immunology, Department of Veterinary Medicine, School of Veterinary Medicine, Azabu University, 1-17-71 Fuchinobe, Chuo-ku, Sagamihara, Kanagawa, 252-5201, Japan.
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21
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Tamukai K, Sugiyama J, Nagata Y, Tsutomu O, Katayama Y, Mizutani T, Kimura M, Une Y. Epidemic nodular facial myxomatous dermatitis in juvenile Cranwell's horned frogs Ceratophrys cranwelli. Dis Aquat Organ 2019; 134:57-64. [PMID: 31020948 DOI: 10.3354/dao03358] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
In 2017, approximately 40 out of 100 captive Cranwell's horned frogs Ceratophrys cranwelli from several facilities in Japan exhibited protruding facial lesions. Histopathological examination was performed on 6 specimens with such lesions randomly selected from 2 facilities. Lesions consisted of scattered stellate to spindle-shaped cells without atypia in an abundant myxoid matrix and occasional lymphocytic infiltrates. Maxillary bone was resorbed. No etiological organisms were detected using light microscopy or metagenomic analysis of the lesions. Macroscopic and histological assessments indicate that the lesions are associated with nodular facial myxomatous dermatitis, which has never been reported in amphibians.
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Affiliation(s)
- Kenichi Tamukai
- Den-en-chofu Animal Hospital, 2-1-3 Denenchofu, Ota-ku, Tokyo 145-0071, Japan
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22
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Matsuno K, Nonoue N, Noda A, Kasajima N, Noguchi K, Takano A, Shimoda H, Orba Y, Muramatsu M, Sakoda Y, Takada A, Minami S, Une Y, Morikawa S, Maeda K. Fatal Tickborne Phlebovirus Infection in Captive Cheetahs, Japan. Emerg Infect Dis 2019; 24:1726-1729. [PMID: 30124411 PMCID: PMC6106400 DOI: 10.3201/eid2409.171667] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
Abstract
Two captive cheetahs from a zoo in Japan died of a severe fever with thrombocytopenia syndrome–like illness. Severe fever with thrombocytopenia syndrome virus, an endemic tickborne phlebovirus, was detected systemically with secretion of infectious viruses into the saliva. These cases highlight the risk for exposure of captive animals to endemic arthropodborne pathogens.
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23
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Kuroki T, Ishihara T, Nakajima N, Furukawa I, Une Y. Prevalence of Salmonella enterica Subspecies enterica in Red-Eared Sliders Trachemys scripta elegans Retailed in Pet Shops in Japan. Jpn J Infect Dis 2018; 72:38-43. [PMID: 30270249 DOI: 10.7883/yoken.jjid.2018.140] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [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: 11/17/2022]
Abstract
We investigated the prevalence of Salmonella in 227 small red-eared sliders (Trachemys scripta elegans) from 2006 to 2008. A total of 130 turtles (57.3%) tested positive for S. enterica subsp. enterica. Twenty-two serotypes including S. Montevideo, S. Newport, S. Pomona, S. Braenderup, S. Sandiego, and S. Litchfield were identified. Salmonella strains with closely related pulsed field gel electrophoresis (PFGE) patterns were isolated from several shops located in different areas from 2006 to 2008. Antimicrobial resistance was detected among strains of S. Montevideo, S. Newport, S. Braenderup, S. Sandiego, and S. Litchfield. The relatedness of antimicrobial resistance and PFGE profiles was not observed. The PFGE patterns of S. Poona strains isolated in 2006 and 2008 and the causative strains of turtle-associated salmonellosis in 2006 were identical. These results revealed a high prevalence of Salmonella enterica subsp. enterica in red-eared sliders retailed in Japan. In addition, genetically closely-related strains of turtle-associated Salmonella were repeatedly introduced into Japan over the study period and were distributed widely in Japan. These Salmonella strains present a risk of a widely disseminated outbreak of turtle-associated salmonellosis.
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Affiliation(s)
- Toshiro Kuroki
- Department of Microbiology, Kanagawa Prefectural Institute of Public Health
| | - Tomoe Ishihara
- Department of Microbiology, Kanagawa Prefectural Institute of Public Health
| | - Naoki Nakajima
- Department of Microbiology, Kanagawa Prefectural Institute of Public Health
| | - Ichiro Furukawa
- Department of Microbiology, Kanagawa Prefectural Institute of Public Health
| | - Yumi Une
- Department of Pathology, School of Veterinary Medicine, Azabu University
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Abstract
Occurrence of clinical signs by infection with Baylisascaris potosis, the roundworm of kinkajous ( Potos flavus), in mice, rats, and rabbit were studied, and the migration behavior of larvae in mice were compared with that of Baylisascaris transfuga, the roundworm of bears ( Ursus spp.). Three groups of 8 mice, 3 groups of 6 rats, and 3 groups of 2 rabbits were inoculated with either 10, 100, or 1,000 B. potosis eggs. The other 8 mice were inoculated with 1,000 B. transfuga eggs. Animals were monitored for the occurrence of clinical signs until 60 days postinoculation (DPI). The carcass, viscera, brain, and eyes of each of 6 mice inoculated with 1,000 eggs of B. potosis or B. transfuga at 60 DPI were removed individually, and the number of larvae was counted. One mouse inoculated with 100 B. potosis eggs showed rolling at 27 DPI, and 1 larva was found in the medulla oblongata of this mouse. No clinical signs were observed in the other mice or in the rats and rabbits. A mean of 387.2 larvae was recovered from mice inoculated with 1,000 B. potosis eggs, and a mean of 422.0 larvae from mice inoculated with 1,000 B. transfuga eggs. The highest number of larvae was recovered from the carcasses for both B. potosis and B. transfuga. In the viscera, higher numbers of B. transfuga larvae (mean 131.8) were seen than B. potosis larvae (mean 33.1). In the brain, only 1 larva was detected in 1/6 mice inoculated with 1,000 B. potosis eggs, whereas a mean of 21 larvae was detected in mice inoculated with 1,000 B. transfuga eggs. A few larvae (range 0-1) were detected in the eyes of both mice inoculated with B. potosis or B. transfuga eggs. The result indicated that B. potosis larvae do not show a higher tendency to migrate into the brain of mice than B. transfuga larvae. However, 1 mouse inoculated with 100 eggs had 1 larva in the central nervous system and showed a serious neurological sign. This result may underline a potential risk of B. potosis to cause neural larva migrans in humans.
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Affiliation(s)
- Kensuke Taira
- 1 Laboratory of Parasitology, School of Veterinary Medicine, Azabu University, 1-17-71 Fuchinobe, Sagamihara, Kanagawa 252-5201, Japan
| | - Shohei Nakamura
- 1 Laboratory of Parasitology, School of Veterinary Medicine, Azabu University, 1-17-71 Fuchinobe, Sagamihara, Kanagawa 252-5201, Japan
| | - Toshihiro Tokiwa
- 2 Laboratory of Parasitology, School of Veterinary Medicine, Nippon Veterinary and Life Science University, 1-7-1 Kyonancho, Musashino, Tokyo 180-8602, Japan
| | - Yumi Une
- 3 Laboratory of Pathology, School of Veterinary Medicine, Azabu University, 1-17-71 Fuchinobe, Sagamihara, Kanagawa 252-5201, Japan
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Oishi M, Ogihara N, Shimizu D, Kikuchi Y, Endo H, Une Y, Soeta S, Amasaki H, Ichihara N. Multivariate analysis of variations in intrinsic foot musculature among hominoids. J Anat 2018; 232:812-823. [PMID: 29327389 PMCID: PMC5879964 DOI: 10.1111/joa.12780] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/16/2017] [Indexed: 11/28/2022] Open
Abstract
Comparative analysis of the foot muscle architecture among extant great apes is important for understanding the evolution of the human foot and, hence, human habitual bipedal walking. However, to our knowledge, there is no previous report of a quantitative comparison of hominoid intrinsic foot muscle dimensions. In the present study, we quantitatively compared muscle dimensions of the hominoid foot by means of multivariate analysis. The foot muscle mass and physiological cross-sectional area (PCSA) of five chimpanzees, one bonobo, two gorillas, and six orangutans were obtained by our own dissections, and those of humans were taken from published accounts. The muscle mass and PCSA were respectively divided by the total mass and total PCSA of the intrinsic muscles of the entire foot for normalization. Variations in muscle architecture among human and extant great apes were quantified based on principal component analysis. Our results demonstrated that the muscle architecture of the orangutan was the most distinctive, having a larger first dorsal interosseous muscle and smaller abductor hallucis brevis muscle. On the other hand, the gorilla was found to be unique in having a larger abductor digiti minimi muscle. Humans were distinguished from extant great apes by a larger quadratus plantae muscle. The chimpanzee and the bonobo appeared to have very similar muscle architecture, with an intermediate position between the human and the orangutan. These differences (or similarities) in architecture of the intrinsic foot muscles among humans and great apes correspond well to the differences in phylogeny, positional behavior, and locomotion.
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Affiliation(s)
- Motoharu Oishi
- Laboratory of Anatomy 1School of Veterinary MedicineAzabu UniversityKanagawaJapan
| | - Naomichi Ogihara
- Department of Mechanical EngineeringFaculty of Science and TechnologyKeio UniversityKanagawaJapan
| | - Daisuke Shimizu
- Department of Physical TherapyFaculty of Nursing and RehabilitationChubu Gakuin UniversityGifuJapan
| | - Yasuhiro Kikuchi
- Division of Human Anatomy and Biological AnthropologyDepartment of Anatomy and PhysiologyFaculty of MedicineSaga UniversitySagaJapan
| | - Hideki Endo
- The University MuseumThe University of TokyoTokyoJapan
| | - Yumi Une
- Laboratory of Veterinary PathologySchool of Veterinary MedicineAzabu UniversityKanagawaJapan
| | - Satoshi Soeta
- Department of Veterinary AnatomySchool of Veterinary MedicineNippon Veterinary and Life Science UniversityTokyoJapan
| | - Hajime Amasaki
- Department of Veterinary AnatomySchool of Veterinary MedicineNippon Veterinary and Life Science UniversityTokyoJapan
| | - Nobutsune Ichihara
- Laboratory of Anatomy 1School of Veterinary MedicineAzabu UniversityKanagawaJapan
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Abstract
We previously reported that the tadpole of bullfrog (Lithobates
catesbeiana) is a useful model for the field surveillance of the
Batrachochytrium dendrobatidis (Bd) distribution. In the present study,
we compared Bd detection rates in swab-scraped and resected mouthpart samples, using
nested polymerase chain reaction (PCR). The resulting detection rates for swab-scraped and
resected specimens were 67 and 65%, respectively, with no significant difference.
Furthermore, we performed a histopathological examination for Bd distribution in the
mouthparts; we found that Bd infection occurred in the tip and basement of the jaw sheaths
and tooth rows. We recommend using swab-scraped samples for Bd detection. Moreover,
careful attention should be paid to scraping the tip and basement of the jaw sheaths and
the entire oral cavity to reduce the rates of false-negative results on nested PCR of the
mouthparts of bullfrog tadpoles.
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Affiliation(s)
- Sho Kadekaru
- Laboratory of Veterinary Pathology, Azabu University, 1-17-71 Fuchinobe, Chuo-ku, Sagamihara, Kanagawa 252-5201, Japan
| | - Yumi Une
- Laboratory of Veterinary Pathology, Azabu University, 1-17-71 Fuchinobe, Chuo-ku, Sagamihara, Kanagawa 252-5201, Japan
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Abstract
As far as we are aware, there are no previous reports on the pathologic conditions of buoyancy disorders in Ambystoma mexicanum. Herein, we describe various clinical test results, clinical outcomes, and the pathological findings of an experimental pneumonectomy procedure in 3 A. mexicanum exhibiting abnormal buoyancy. The 3 pet A. mexicanum were adults, and their respective ages and body weights were 1, 5, and 6 yr and 48, 55, and 56 g. Two of these cases were confirmed via radiographic examination to have free air within the body cavity, and all 3 cases were found via ultrasonography to have an acoustic shadow within the body cavity and were diagnosed with pneumocoelom. Lung perforations were detected macroscopically in 2 of the cases, and all 3 cases had fibrosis in the caudal ends of the lungs. Removal of the lung lesions eliminated the abnormal buoyancy in all 3 cases. We concluded that air had leaked into the body cavity from the lungs, and we propose that lung lesions are an important cause of buoyancy disorders in A. mexicanum.
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Affiliation(s)
- Yoshinori Takami
- Verts Animal Hospital, 2-21-5 Naka, Hakata-ku, Fukuoka-shi, Fukuoka 812-0893, Japan
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28
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Affiliation(s)
- Yoshinori Takami
- 1. The Laboratory of Veterinary Pathology, School of Veterinary Medicine, Azabu University, 1-17-71 Fuchinobe, Chuo-ku, Sagamihara, Kanagawa 252-5201, Japan
| | - Yumi Une
- 1. The Laboratory of Veterinary Pathology, School of Veterinary Medicine, Azabu University, 1-17-71 Fuchinobe, Chuo-ku, Sagamihara, Kanagawa 252-5201, Japan
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Koutaka M, Hyougo H, Tsugo K, Une Y. Anomalous origin of the right coronary artery from the pulmonary artery and congenital bicuspid aortic valve in a California sea lion (Zalophus californianus). J Vet Med Sci 2017; 79:1559-1562. [PMID: 28781293 PMCID: PMC5627328 DOI: 10.1292/jvms.16-0522] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
A 27-year-old captive female California sea lion (Zalophus californianus) died suddenly. Necropsy findings showed severe hemopericardium, the right coronary artery arose from the sinus of the pulmonary trunk, and the aortic valve was composed of two semilunar cusps. Coronary artery branches emerging from the epicardium were dilated and tortuous. Pampiniform vascular plexus formation existed along the adventitia from the coronal sulcus to the pulmonary trunk. This is the first report of multiple congenital cardiac malformations with an anomalous origin of the right coronary artery from the pulmonary artery and a bicuspid aortic valve in a marine mammal.
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Affiliation(s)
- Mitsuru Koutaka
- Marine World Umino-nakamichi, 18-28 Saitozaki, Higashi-ku, Fukuoka-shi, Fukuoka 811-0321, Japan
| | - Hanami Hyougo
- Laboratory of Veterinary Pathology, Azabu University, 1-17-71 Fuchinobe, Chuo-ku, Sagamihara, Kanagawa 252-5201, Japan
| | - Kousuke Tsugo
- Laboratory of Veterinary Pathology, Azabu University, 1-17-71 Fuchinobe, Chuo-ku, Sagamihara, Kanagawa 252-5201, Japan
| | - Yumi Une
- Laboratory of Veterinary Pathology, Azabu University, 1-17-71 Fuchinobe, Chuo-ku, Sagamihara, Kanagawa 252-5201, Japan
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Abstract
Ambystoma mexicanum kept as pets are affected by a variety of diseases.
However, no reports regarding the incidence of specific diseases are available. This study
aimed to identify the diseases that occur frequently in this species by surveying the
incidence of conditions in pet A. mexicanum specimens brought to a
veterinary hospital. The sample comprised 97 pet A. mexicanum individuals
brought to the authors’ hospital during the 82-month period, i.e., from January 2008 to
October 2014. In total, 116 diseases were identified. The most common disease was
hydrocoelom (32 cases; 27.5% of all cases). Elucidating the pathogenesis of hydrocoelom,
which has a high prevalence rate, is vital to maintaining the long-term health of
A. mexicanum pets.
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Affiliation(s)
- Yoshinori Takami
- The Laboratory of Veterinary Pathology, School of Veterinary Medicine, Azabu University, 1-17-71 Fuchinobe, Chuo-ku, Sagamihara, Kanagawa 252-5201, Japan.,Verts Animal Hospital, 2-21-5 Naka, Hakata-ku, Fukuoka-shi, Fukuoka 812-0893, Japan
| | - Yumi Une
- The Laboratory of Veterinary Pathology, School of Veterinary Medicine, Azabu University, 1-17-71 Fuchinobe, Chuo-ku, Sagamihara, Kanagawa 252-5201, Japan
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Sato R, Une Y, Madarame H, Hanami H, Kanai E, Murakami H, Tsukamoto A, Suzuki T, Ochiai H, Kikuchi M, Tanaka H, Onda K. A nasal osteoma with an acute course in a Japanese Black heifer. J Vet Med Sci 2017; 79:1220-1224. [PMID: 28579581 PMCID: PMC5559367 DOI: 10.1292/jvms.17-0041] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
A 14-month-old Japanese Black heifer presented with unilateral epistaxis and mild swelling of the right face. Radiography revealed a mass with increased radiopacity on the right side of the nasal bridge, extending to the left side. Intranasal endoscopy confirmed a large tumor-like structure protruding into the nasal cavity. Following euthanasia, cranial computed tomography (CT) was performed, revealing a tumor 24.3 × 17.5 × 14.8 cm in size. The tumor occupied the entire right nasal cavity and the frontal and sphenoid sinuses. Histopathological examination revealed that the tumor consisted of well-differentiated trabecular bones and loose connective tissue. Based on these findings, a diagnosis of osteoma was established. This report describes a case of osteoma with an acute course in a Japanese Black heifer.
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Affiliation(s)
- Reiichiro Sato
- Laboratory of Farm Animal Internal Medicine, School of Veterinary Medicine, Azabu University, 1-17-71 Fuchinobe, Chuo-ku, Sagamihara, Kanagawa 252-5201, Japan
| | - Yumi Une
- Laboratory of Veterinary Pathology, School of Veterinary Medicine, Azabu University, 1-17-71 Fuchinobe, Chuo-ku, Sagamihara, Kanagawa 252-5201, Japan
| | - Hiroo Madarame
- Laboratory of Small Animal Clinics, School of Veterinary Medicine, Azabu University, 1-17-71 Fuchinobe, Chuo-ku, Sagamihara, Kanagawa 252-5201, Japan
| | - Hyougo Hanami
- Laboratory of Veterinary Pathology, School of Veterinary Medicine, Azabu University, 1-17-71 Fuchinobe, Chuo-ku, Sagamihara, Kanagawa 252-5201, Japan
| | - Eiichi Kanai
- Laboratory of Veterinary Ragiology, School of Veterinary Medicine, Azabu University, 1-17-71 Fuchinobe, Chuo-ku, Sagamihara, Kanagawa 252-5201, Japan
| | - Hironobu Murakami
- Laboratory of Animal Health II, School of Veterinary Medicine, Azabu University, 1-17-71 Fuchinobe, Chuo-ku, Sagamihara, Kanagawa 252-5201, Japan
| | - Atsushi Tsukamoto
- Laboratory of Laboratory Animal Science, School of Veterinary Medicine, Azabu University, 1-17-71 Fuchinobe, Chuo-ku, Sagamihara, Kanagawa 252-5201, Japan
| | - Takehito Suzuki
- Laboratory of Nutirion, School of Veterinary Medicine, Azabu University, 1-17-71 Fuchinobe, Chuo-ku, Sagamihara, Kanagawa 252-5201, Japan
| | - Hideharu Ochiai
- Institute of Biosciences, School of Veterinary Medicine, Azabu University, 1-17-71 Fuchinobe, Chuo-ku, Sagamihara, Kanagawa 252-5201, Japan
| | - Masato Kikuchi
- Seibu Veterinary Clinic, Chiba Agricultural and Mutual Aid Association, 154-11 Ijino Aza Koshinori, Shisui-machi, Inba-gun, Chiba 285-0902, Japan
| | - Hidekazu Tanaka
- Seibu Veterinary Clinic, Chiba Agricultural and Mutual Aid Association, 154-11 Ijino Aza Koshinori, Shisui-machi, Inba-gun, Chiba 285-0902, Japan
| | - Ken Onda
- Laboratory of Farm Animal Internal Medicine, School of Veterinary Medicine, Azabu University, 1-17-71 Fuchinobe, Chuo-ku, Sagamihara, Kanagawa 252-5201, Japan
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Nakamura S, Yoshimura Y, Hayashidani H, Iwata T, Iseda S, Une Y. Fatal Salmonellosis in Captive Maras ( Dolichotis patagonum ) Caused by Salmonella Enteritidis. J Comp Pathol 2017; 156:440-445. [DOI: 10.1016/j.jcpa.2017.01.007] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2016] [Revised: 01/22/2017] [Accepted: 01/26/2017] [Indexed: 11/16/2022]
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Tsugo K, Nakamura SI, Yamanaka H, Une Y. A study on the efficacy of the recombinant Yersinia adhesin A vaccine against yersiniosis in the early phase. J Vet Med Sci 2017; 79:855-863. [PMID: 28320976 PMCID: PMC5447973 DOI: 10.1292/jvms.16-0528] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
Yersinia pseudotuberculosis (Y. ptb) is a zoonotic pathogenic bacterial species of the family Enterobacteriaceae and causes yersiniosis, an acute intestinal infection in humans and animals.
Y. ptb is often implicated in lethal epidemics in zoo animals and reductions in the breeding population, but a valid prevention method has not been established. Therefore, this study aimed to develop a vaccine
for yersiniosis control. The immunogenicity of one of the adhesion factors involved in pathogenic mechanisms of Y. ptb, Yersinia adhesin A (YadA), was investigated. BALB/c mice were divided into 3
groups: in group 1, mice received insoluble recombinant YadA (rYadA) produced in genetically engineered Escherichia coli (100 µg/dose); in group 2, mice received inactivated Y.
ptb with strong expression of YadA (20 mg/dose);and in group 3, mice received phosphate-buffered saline (0.2 ml/dose). All interventions were administered subcutaneously twice at an interval of 1 week.
One week after the second administration, Y. ptb (107 cells/mouse) was inoculated orally. As a result, the survival rate was 100% in group 1, 60% in group 2, and 0% in group 3. The anti-YadA antibody
titer increased in a stepwise fashion in groups 1 and 2. The present study results suggest that rYadA shows promise as a protective antigen against yersiniosis. This study concluded that vaccination against Y. ptb
may become available as a new method to prevent lethal epidemics in animals.
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Affiliation(s)
- Kosuke Tsugo
- Laboratory of Veterinary Pathology, School of Veterinary Medicine, Azabu University, 1-17-71 Fuchinobe, Chuo-ku, Sagamihara, Kanagawa 252-5201, Japan
| | - Shin-Ichi Nakamura
- Laboratory of Veterinary Pathology, School of Veterinary Medicine, Azabu University, 1-17-71 Fuchinobe, Chuo-ku, Sagamihara, Kanagawa 252-5201, Japan
| | - Hiroko Yamanaka
- Laboratory of Veterinary Pathology, School of Veterinary Medicine, Azabu University, 1-17-71 Fuchinobe, Chuo-ku, Sagamihara, Kanagawa 252-5201, Japan
| | - Yumi Une
- Laboratory of Veterinary Pathology, School of Veterinary Medicine, Azabu University, 1-17-71 Fuchinobe, Chuo-ku, Sagamihara, Kanagawa 252-5201, Japan
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Kimura M, Une Y, Suzuki M, Park ES, Imaoka K, Morikawa S. Isolation of Brucella inopinata-Like Bacteria from White's and Denny's Tree Frogs. Vector Borne Zoonotic Dis 2017; 17:297-302. [PMID: 28437181 DOI: 10.1089/vbz.2016.2027] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [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: 11/13/2022] Open
Abstract
Brucella inopinata strain BO1 and B. sp. strain BO2 isolated from human patients, respectively, are genetically different from classical Brucella species. We isolated bacteria of the genus Brucella from two species of wild-caught tropical frogs kept in the facilities in Japan: White's tree frog, which inhabits Oceania, and Denny's tree frog, which inhabits Southeast Asia. Phylogenetic analyses based on 16S rRNA and recA gene sequences and multilocus sequence analysis showed that two isolates of Brucella spp. showed significant similarity to BO1, BO2, and the isolates from other wild-caught frogs. These results suggest that a variety of frog species are susceptible to a novel clade of Brucella bacteria, including B. inopinata.
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Affiliation(s)
- Masanobu Kimura
- 1 Department of Veterinary Science, National Institute of Infectious Diseases , Tokyo, Japan
| | - Yumi Une
- 2 Laboratory of Veterinary Pathology, Azabu University , Kanagawa, Japan
| | - Michio Suzuki
- 1 Department of Veterinary Science, National Institute of Infectious Diseases , Tokyo, Japan
| | - Eun-Sil Park
- 1 Department of Veterinary Science, National Institute of Infectious Diseases , Tokyo, Japan
| | - Koichi Imaoka
- 1 Department of Veterinary Science, National Institute of Infectious Diseases , Tokyo, Japan
| | - Shigeru Morikawa
- 1 Department of Veterinary Science, National Institute of Infectious Diseases , Tokyo, Japan
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Abstract
A postmortem examination revealed a large brain cavity in the right cerebral hemisphere
of a 9-year-old male fennec (Vulpes zerda). The cavity was filled with
cerebrospinal fluid and extended to the right lateral ventricle. Swelling and displacement
of the right hippocampal area were also observed. Histologic examination revealed no
evidence of previous infarct lesions, hemorrhage, inflammation or invasive tumor cells.
Observation of the defective part suggested a local circulatory disorder during the fetal
stage, although the cause was not detected. No neurological symptoms that could enable a
provisional diagnosis were observed during the course of his life. This is the first
report of asymptomatic porencephaly in a fennec fox.
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Affiliation(s)
- Mutsumi Yamazaki
- Laboratory of Veterinary Pathology, Azabu University, 1-17-71 Fuchinobe, Chuo-ku, Sagamihara, Kanagawa 252-5201, Japan
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Abstract
A penile tumor (4 × 2.5 × 1 cm) was surgically removed from an African pygmy hedgehog (Atelerix albiventris) aged 3 years and 5 months. The
tumor was continuous with the dorsal fascia of the penile head. Histopathologically, tumor cells were pleomorphic (oval-, short spindle- and star-shaped cells)
with low cell density. Abundant edematous stroma was weakly positive for Alcian blue staining and positive for colloidal iron reaction. Tumor cells displayed no
cellular atypia or karyokinesis. Tumor cell cytoplasm was positive for vimentin antibody, while cytoplasm and nuclei were positive for S-100 protein antibody.
Tumor cell ultrastructure matched that of fibroblasts, and the rough endoplasmic reticulum was enlarged. The tumor was diagnosed as myxoma. This represents the
first report of myxoma in a hedgehog.
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Affiliation(s)
- Yoshinori Takami
- The Laboratory of Veterinary Pathology, School of Veterinary Medicine Azabu University, 1-17-71 Fuchinobe, Chuo-ku, Sagamihara, Kanagawa 252-5201, Japan
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Tsugo K, Kinoshita T, Kadowaki K, Sugahara G, Saito E, Kawakami S, Une Y. Subcutaneous malignant mast cell tumor in a Japanese macaque (Macaca fuscata). Primates 2016; 58:19-23. [PMID: 27761684 DOI: 10.1007/s10329-016-0579-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2016] [Accepted: 09/23/2016] [Indexed: 11/29/2022]
Abstract
The histopathological, immunohistochemical, and ultrastructural morphologic characteristics of a tumor in the subcutaneous tissue of the chest of a 19-year-old female Japanese macaque were investigated. Consequently, the mass was diagnosed as a malignant mast cell tumor (MCT). Tumors were present in both mammary gland portions of the anterior thorax. Both tumors showed the same histopathological findings. The tumor tissue was defined by the presence of delicate connective tissue, and the tumor cells grew in a cord-like or cobblestone pattern. The tumor cell cytoplasm was very clear. The nuclei were relatively uniform and the cells showed a low nucleus-cytoplasm ratio. The cytoplasmic granules stained blue with Alcian blue and eosinophils had infiltrated into the tumor tissue. Furthermore, immunohistochemical analysis revealed that the tumor cell membrane was positive for the anti-c-kit antibody. In ultrastructural morphologic analyses, all tumor cells showed a rich cytoplasm and, occasionally, granules wrapped in a limiting membrane of high electron density. The tumor cells had metastasized to the axillary lymph nodes, the kidney, and the peritoneum. Based on these results, the mass was diagnosed as a malignant MCT originating from the subcutaneous tissue of the chest. Since cases of MCTs in macaques are very rare, this report presents important new knowledge of neoplastic lesions in this species.
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Affiliation(s)
- Kosuke Tsugo
- Laboratory of Veterinary Pathology, School of Veterinary Medicine, Azabu University, 1-17-71 Fuchinobe, Chuo-ku, Sagamihara, Kanagawa, 252-5201, Japan
| | - Tomoe Kinoshita
- Laboratory of Veterinary Pathology, School of Veterinary Medicine, Azabu University, 1-17-71 Fuchinobe, Chuo-ku, Sagamihara, Kanagawa, 252-5201, Japan
| | - Ko Kadowaki
- Laboratory of Veterinary Pathology, School of Veterinary Medicine, Azabu University, 1-17-71 Fuchinobe, Chuo-ku, Sagamihara, Kanagawa, 252-5201, Japan
| | - Go Sugahara
- Laboratory of Veterinary Pathology, School of Veterinary Medicine, Azabu University, 1-17-71 Fuchinobe, Chuo-ku, Sagamihara, Kanagawa, 252-5201, Japan
| | - Emiko Saito
- Gunma Safari Park, 1 Okamoto, Tomioka, Gunma, 370-2300, Japan
| | | | - Yumi Une
- Laboratory of Veterinary Pathology, School of Veterinary Medicine, Azabu University, 1-17-71 Fuchinobe, Chuo-ku, Sagamihara, Kanagawa, 252-5201, Japan.
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Choji K, Shinohara M, Nojima T, Kusumoto K, Une Y, Glazer RN, Isomatsu T. Significant Reduction of the Echogenicity of the Compressed Cavernous Hemangioma. Acta Radiol 2016. [DOI: 10.1177/028418518802900311] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Eleven hyperreflective hepatic nodules in eight patients were examined by means of intraoperative ultrasonography (US) with the transducer placed on the liver surface. The nodules included four cavernous hemangiomas, four hepatocellular carcinomas, one metastatic tumor, and two regenerative nodules in cirrhotic livers. When the relevant part of the liver was compressed during US observation, the echogenicity was reduced only in the case of cavernous hemangioma. This phenomenon is considered to be unique to cavernous hemangioma.
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Abstract
A 22-year-old captive male South American sea lion (Otaria flavescens) developed an undifferentiated carcinoma originating in the cardiac region of the stomach. Clinical symptoms included vomiting, anorexia and weight loss. Ultrasonography and endoscopy showed gastric wall thickness. At necropsy, the gastric wall had significant thickening around the cardiac region, and metastases were found in some organs. Histologically, samples from the stomach wall and metastases showed the same tumor tissue. Immunohistochemistry was positive for epithelium markers. Ductal growth, keratinocytes or signet ring cells were absent. The tumor was classified as an undifferentiated carcinoma using the World Health Organization's (WHO) guide to international classification of tumors in domestic animals. This is the first report of a primary gastric carcinoma in a pinniped.
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Affiliation(s)
- Mutsumi Yamazaki
- Laboratory of Veterinary Pathology, Azabu University, 1-17-71, Fuchinobe, Chuo-ku, Sagamihara, Kanagawa 252-5201, Japan
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Goto M, Nomura Y, Une Y, Goldschmidt MH. Malignant Mixed Müllerian Tumor in a Rabbit (Oryctolagus cuniculus): Case Report with Immunohistochemistry. Vet Pathol 2016; 43:560-4. [PMID: 16847001 DOI: 10.1354/vp.43-4-560] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
A rabbit ( Oryctolagus cuniculus) with a homologous malignant mixed müllerian tumor (MMMT) of the uterus with decidualization in the sarcomatous components is described. On histologic examination, the neoplasm was characterized by a carcinomatous and a sarcomatous component with invasion of the myometrium. The epithelial component was a well-differentiated carcinoma, and the nonepithelial component contained large amounts of intracytoplasmic glycogen. The changes in stromal cells were morphologically similar to changes usually found in decidual cells in the pregnant uterus or in deciduosarcomas in rabbits. Results of immunohistochemical analysis indicated that the epithelial components stained positive with cytokeratin (CK7, AE1/3) and the decidual-stromal cells stained positive for vimentin, but did not stain with α-SMA, actin, and desmin. This case fulfills all the criteria of an MMMT in having a carcinomatous and a sarcomatous component, but differs from cases of MMMT in women in that the sarcomatous component had decidualized. To the authors' knowledge, this is the first report of a malignant mixed müllerian tumor in rabbits.
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Affiliation(s)
- M Goto
- Laboratory of Veterinary Pathology, School of Veterinary Medicine, Azabu University 1-17-71 Fuchinobe Sagamihara, Kanagawa 229-8501 (Japan).
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Abstract
Batrachochytrium dendrobatidis (Bd) infects Anuran larvae (tadpole)
mouthparts and causes oral chytridiomycosis, which can be diagnosed in tadpoles by
detecting mouthparts deformities. However, oral chytridiomycosis may or may not be
observable, depending on species, tadpole stage and season, and has never been reported in
Japan. We aimed to observe oral chytridiomycosis characteristics in bullfrog
(Lithobates catesbeiana) tadpoles, determine associated pathologic
features and investigate the usability of bullfrog tadpoles in Japanese Bd field surveys.
Wild-captured bullfrog tadpole mouthparts were examined macroscopically,
histopathologically and by molecular biological examination. Macroscopic lesions were
observed in 21 of 59 tadpole mouthparts. Lesions were most frequently located in the lower
jaw sheaths and were mainly recognized by partial depigmentation (11 tadpoles; some were
completely depigmented) and thinning of the pigmented layer (10 tadpoles). Partial defects
of the tips and blunt cutting edges of the jaw sheaths were observed with severe jaw
sheath depigmentation. Whitened tooth rows were observed in 7 tadpoles. Histologically,
the stratified epithelium (pigmented epithelium) showed partial or diffuse
hypopigmentation or pigment loss. Irregular stratified epithelium thickening with
hyperkeratosis or parakeratosis was observed in the jaw sheaths. Bd infection was
confirmed in 20 of 21 tadpoles presenting jaw sheath deformities, by histopathological
examination and/or nested polymerase chain reaction. Depigmentation and thinning of the
pigmented layers of jaw sheaths were associated with Bd infection. Thus, diagnosis of Bd
infection by macroscopic observation of bullfrog tadpole mouthparts is feasible. This is
the first report of oral chytridiomycosis in wild bullfrog tadpoles in Japan.
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Affiliation(s)
- Sho Kadekaru
- Laboratory of Veterinary Pathology, Azabu University, 1-17-71 Fuchinobe, Chuo-ku, Sagamihara, Kanagawa 252-5201, Japan
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Okadera K, Abe M, Ito N, Mitake H, Okada K, Nakagawa K, Une Y, Tsunemitsu H, Sugiyama M. Isolation and characterization of a novel type of rotavirus species A in sugar gliders (Petaurus breviceps). J Gen Virol 2016; 97:1158-1167. [DOI: 10.1099/jgv.0.000433] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Affiliation(s)
- Kota Okadera
- The United Graduate School of Veterinary Sciences,Gifu University, 1-1 Yanagido, Gifu 501-1193,Japan
| | - Masako Abe
- The United Graduate School of Veterinary Sciences,Gifu University, 1-1 Yanagido, Gifu 501-1193,Japan
| | - Naoto Ito
- The United Graduate School of Veterinary Sciences,Gifu University, 1-1 Yanagido, Gifu 501-1193,Japan
- Laboratory of Zoonotic Diseases, Faculty of Applied Biological Sciences,Gifu University, 1-1 Yanagido, Gifu 501-1193,Japan
| | - Hiromichi Mitake
- The United Graduate School of Veterinary Sciences,Gifu University, 1-1 Yanagido, Gifu 501-1193,Japan
| | - Kazuma Okada
- The United Graduate School of Veterinary Sciences,Gifu University, 1-1 Yanagido, Gifu 501-1193,Japan
| | - Kento Nakagawa
- The United Graduate School of Veterinary Sciences,Gifu University, 1-1 Yanagido, Gifu 501-1193,Japan
| | - Yumi Une
- Laboratory of Veterinary Pathology, School of Veterinary Medicine,Azabu University, 1-17-71 Fuchinobe, Kanagawa, 252-5201,Japan
| | - Hiroshi Tsunemitsu
- Dairy Hygiene Research Division, National Institute of Animal Health,4 Hitsujigaoka, Hokkaido, 062-0045,Japan
| | - Makoto Sugiyama
- The United Graduate School of Veterinary Sciences,Gifu University, 1-1 Yanagido, Gifu 501-1193,Japan
- Laboratory of Zoonotic Diseases, Faculty of Applied Biological Sciences,Gifu University, 1-1 Yanagido, Gifu 501-1193,Japan
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43
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Nakano Y, Une Y. Primary peripheral primitive neuroectodermal tumour of the tongue in a peach‐faced lovebird (
Agapornis roseicollis
). Vet Record Case Reports 2016. [DOI: 10.1136/vetreccr-2016-000318] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Affiliation(s)
| | - Yumi Une
- Laboratory of Veterinary PathologyAzabu UniversitySagamiharaKanagawaJapan
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Hatta Y, Omatsu T, Tsuchiaka S, Katayama Y, Taniguchi S, Masangkay JS, Puentespina R, Eres E, Cosico E, Une Y, Yoshikawa Y, Maeda K, Kyuwa S, Mizutani T. Detection of Campylobacter jejuni in rectal swab samples from Rousettus amplexicaudatus in the Philippines. J Vet Med Sci 2016; 78:1347-50. [PMID: 27109214 PMCID: PMC5053940 DOI: 10.1292/jvms.15-0621] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/02/2022] Open
Abstract
Bats are the second diversity species of mammals and widely distributed in the world.
They are thought to be reservoir and vectors of zoonotic pathogens. However, there is
scarce report of the evidence of pathogenic bacteria kept in bats. The precise knowledge
of the pathogenic bacteria in bat microbiota is important for zoonosis control. Thus,
metagenomic analysis targeting the V3-V4 region of the 16S rRNA of the rectal microbiota
in Rousettus amplexicaudatus was performed using high throughput
sequencing. The results revealed that 103 genera of bacteria including
Camplyobacter were detected. Campylobacter was second
predominant genus, and Campylobacter coli and Campylobacter
jejuni were identified in microbiome of R. amplexicaudatus.
Campylobacteriosis is one of the serious bacterial diarrhea in human, and the most often
implicated species as the causative agent of campylobacteriosis is C.
jejuni. Therefore, we investigated the prevalence of C. jejuni
in 91 wild bats with PCR. As a result of PCR assay targeted on 16S-23S intergenic spacer,
partial genome of C. jejuni was detected only in five R.
amplexicaudatus. This is the first report that C. jejuni was
detected in bat rectal swab samples. C. jejuni is the most common cause
of campylobacteriosis in humans, transmitted through water and contact with livestock
animals. This result indicated that R. amplexicaudatus may be a carrier
of C. jejuni.
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Affiliation(s)
- Yuki Hatta
- Research and Education Center for Prevention of Global Infectious Diseases of Animals, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai-cho, Fuchu-shi, Tokyo 183-8509, Japan
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Abstract
Sarcoma developing in association with a metallic orthopedic procedure is an uncommon but well-recognized complication in mammals. We report on a synovial sarcoma that developed at the site of an intramedullary pin after surgery to treat a bone fracture. A 17-year-old female peach-faced lovebird (Agapornis roseicollis) developed a spherical mass on the distal right dorsal wing at a site that was previously fractured and surgically repaired with an indwelling intramedullary pin. The right wing was amputated at the scapulohumeral joint. One year later, the bird died. Postmortem examination revealed metastases in the right lung, left thoracic wall, and proventricular serosa. Histologically, the tumor had a characteristic biphasic pattern. The tumor was immunohistologically and ultrastructurally identified as a synovial sarcoma. This is the first report of a suspected fracture-associated sarcoma in a bird.
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46
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Minami S, Terada Y, Shimoda H, Takizawa M, Onuma M, Ota A, Ota Y, Akabane Y, Tamukai K, Watanabe K, Naganuma Y, Kanagawa E, Nakamura K, Ohashi M, Takami Y, Miwa Y, Tanoue T, Ohwaki M, Ohta J, Une Y, Maeda K. Establishment of serological test to detect antibody against ferret coronavirus. J Vet Med Sci 2016; 78:1013-7. [PMID: 26935842 PMCID: PMC4937135 DOI: 10.1292/jvms.16-0059] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Since there is no available serological methods to detect antibodies to ferret coronavirus (FRCoV), an enzyme-linked immunosorbent assay (ELISA) using recombinant partial nucleocapsid (N) proteins of the ferret coronavirus (FRCoV) Yamaguchi-1 strain was developed to establish a serological method for detection of FRCoV infection. Many serum samples collected from ferrets recognized both a.a. 1-179 and a.a. 180-374 of the N protein, but two serum samples did not a.a. 180-374 of the N protein. This different reactivity was also confirmed by immunoblot analysis using the serum from the ferret.Therefore, the a.a. 1-179 of the N protein was used as an ELISA antigen. Serological test was carried out using sera or plasma of ferrets in Japan. Surprisingly, 89% ferrets in Japan had been infected with FRCoV. These results indicated that our established ELISA using a.a. 1-179 of the N protein is useful for detection of antibody to FRCoV for diagnosis and seroepidemiology of FRCoV infection.
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Affiliation(s)
- Shohei Minami
- Laboratory of Veterinary Microbiology, Joint Faculty of Veterinary Medicine, Yamaguchi University, 1677-1 Yoshida, Yamaguchi 753-8515, Japan
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Murakoshi F, Recuenco FC, Omatsu T, Sano K, Taniguchi S, Masangkay JS, Alviola P, Eres E, Cosico E, Alvarez J, Une Y, Kyuwa S, Sugiura Y, Kato K. Detection and molecular characterization of Cryptosporidium and Eimeria species in Philippine bats. Parasitol Res 2016; 115:1863-9. [PMID: 26833326 DOI: 10.1007/s00436-016-4926-4] [Citation(s) in RCA: 13] [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] [Received: 10/30/2015] [Accepted: 01/14/2016] [Indexed: 01/09/2023]
Abstract
The genus Cryptosporidium, which is an obligate intracellular parasite, infects various vertebrates and causes a diarrheal disease known as cryptosporidiosis. Bats are naturally infected with zoonotic pathogens; thus, they are potential reservoirs of parasites. We investigated the species and genotype distribution as well as prevalence of Cryptosporidium and Eimeria in Philippine bats. We captured and examined 45 bats; four were positive for Cryptosporidium spp. and seven were positive for Eimeria spp. We detected Cryptosporidium bat genotype II from Ptenochirus jagori. Three other Cryptosporidium sequences, detected from Rhinolophus inops, Cynopterus brachyotis, and Eonycteris spelaea, could not be classified as any known species or genotype; we therefore propose the novel genotype Cryptosporidium bat genotypes V, VI, and VII. Bat genotype V is associated with human cryptosporidiosis clade, and therefore, this genotype may be transmissible to humans. Among the Eimeria sequences, BE3 detected from Scotophilus kuhlii was classified with known bat and rodent clades; however, other sequences detected from C. brachyotis, E. spelaea, Rousettus amplexicaudatus, and R. inops could not be classified with known Eimeria species. These isolates might represent a new genotype. Our findings demonstrate that the bats of the Philippines represent a reservoir of multiple Cryptosporidium and Eimeria spp.
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Affiliation(s)
- Fumi Murakoshi
- National Research Center for Protozoan Diseases, Obihiro University of Agriculture and Veterinary Medicine, Inada-cho, Obihiro, Hokkaido, 080-8555, Japan
| | - Frances C Recuenco
- College of Veterinary Medicine, University of the Philippines Los Baños, Los Baños, Laguna, 4031, Philippines
| | - Tsutomu Omatsu
- Research and Education Center for Prevention of Global Infectious Disease of Animal, Tokyo University of Agriculture and Technology, Saiwai, Fuchu, Tokyo, 183-8509, Japan
| | - Kaori Sano
- Research and Education Center for Prevention of Global Infectious Disease of Animal, Tokyo University of Agriculture and Technology, Saiwai, Fuchu, Tokyo, 183-8509, Japan
| | - Satoshi Taniguchi
- Department of Virology I, Special Pathogens Laboratory, National Institute of Infectious Diseases, Musashimurayama, Tokyo, 208-0011, Japan
| | - Joseph S Masangkay
- College of Veterinary Medicine, University of the Philippines Los Baños, Los Baños, Laguna, 4031, Philippines
| | - Philip Alviola
- Museum of Natural History, University of the Philippines Los Baños, Los Baños, Laguna, 4031, Philippines
| | - Eduardo Eres
- Museum of Natural History, University of the Philippines Los Baños, Los Baños, Laguna, 4031, Philippines
| | - Edison Cosico
- Museum of Natural History, University of the Philippines Los Baños, Los Baños, Laguna, 4031, Philippines
| | - James Alvarez
- Museum of Natural History, University of the Philippines Los Baños, Los Baños, Laguna, 4031, Philippines
| | - Yumi Une
- Laboratory of Veterinary Pathology, School of Veterinary Medicine, Azabu University, 1-17-71 Fuchinobe, Sagamihara, Kanagawa, 252-5201, Japan
| | - Shigeru Kyuwa
- Department of Biomedical Science, Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo, 113-8657, Japan
| | - Yuki Sugiura
- Department of Biomedical Science, Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo, 113-8657, Japan
| | - Kentaro Kato
- National Research Center for Protozoan Diseases, Obihiro University of Agriculture and Veterinary Medicine, Inada-cho, Obihiro, Hokkaido, 080-8555, Japan.
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Tamukai K, Tokiwa T, Kobayashi H, Une Y. Ranavirus in an outbreak of dermatophilosis in captive inland bearded dragons (Pogona vitticeps). Vet Dermatol 2016; 27:99-105e28. [PMID: 26940568 DOI: 10.1111/vde.12288] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/13/2015] [Indexed: 01/19/2023]
Abstract
BACKGROUND Various pathogens cause skin diseases in lizards. An outbreak of skin disease occurred in a population of 100 inland bearded dragons at a breeding facility in Japan; 50 developed skin lesions and 15 mortalities were reported. HYPOTHESIS/OBJECTIVES To identify the pathogens responsible for the skin lesions and to determine the cause of death. ANIMALS Eight specimens (three dead, two euthanized, three living) were randomly selected from a group of inland bearded dragons with skin lesions consisting of multifocal superficial dermatitis. METHODS Biopsy samples were taken from skin lesions and healthy skin of the live specimens. Postmortem examinations were performed on the dead and euthanized specimens. Skin samples were processed for microbiological culture, 16S ribosomal DNA (rDNA) sequencing for bacteria, ranavirus major capsid protein (MCP) gene sequencing and histopathological examination. Histopathological examinations were also performed on postmortem tissue samples. RESULTS Both Austwickia chelonae and ranavirus (DNA) were detected in the skin lesions. Pathological examination revealed no significant visceral lesions caused by A. chelonae or ranavirus infection in dead specimens. CONCLUSIONS AND CLINICAL IMPORTANCE To the best of the authors' knowledge this is the first report of dermatophilosis due to A. chelonae infection in lizards and the first description of a concurrent infection with a ranavirus. The combined infection associated with the skin lesions may have been the primary cause of death. Co-infection with a ranavirus should be considered as a possible factor in cases of reptilian dermatophilosis.
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Affiliation(s)
- Kenichi Tamukai
- Den-en-chofu Animal Hospital, 2-1-3 Denenchofu, Ota-ku, Tokyo 145-0071, Japan
| | - Toshihiro Tokiwa
- Division of Pathobiological Analysis, Nippon Veterinary and Life Science University, 1-7-1 Kyonancho, Musashino, Tokyo 180-8602, Japan
| | - Hideki Kobayashi
- Center of Animal Disease Control and Prevention, National Institute of Animal Health, 3-1-5 Kannondai, Tsukuba, Ibaraki 305-0856, Japan
| | - Yumi Une
- Laboratory of Veterinary Pathology, Azabu University, 1-17-71 Fuchinobe, Chuo-ku, Sagamihara, Kanagawa 252-5201, Japan
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Chambers JK, Tokuda T, Uchida K, Ishii R, Tatebe H, Takahashi E, Tomiyama T, Une Y, Nakayama H. The domestic cat as a natural animal model of Alzheimer's disease. Acta Neuropathol Commun 2015; 3:78. [PMID: 26651821 PMCID: PMC4674944 DOI: 10.1186/s40478-015-0258-3] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2015] [Accepted: 11/19/2015] [Indexed: 12/27/2022] Open
Abstract
Introduction Alzheimer’s disease (AD) is the most dominant neurodegenerative disorder that causes dementia, and no effective treatments are available. To study its pathogenesis and develop therapeutics, animal models representing its pathologies are needed. Although many animal species develop senile plaques (SP) composed of amyloid-β (Aβ) proteins that are identical to those found in humans, none of them exhibit neurofibrillary tangles (NFT) and subsequent neurodegeneration, which are integral parts of the pathology of AD. Results The present study shows that Aβ accumulation, NFT formation, and significant neuronal loss all emerge naturally in the hippocampi of aged domestic cats. The NFT that form in the cat brain are identical to those seen in human AD in terms of their spatial distribution, the cells they affect, and the tau isoforms that comprise them. Interestingly, aged cats do not develop mature argyrophilic SP, but instead accumulate intraneuronal Aβ oligomers in their hippocampal pyramidal cells, which might be due to the amino acid sequence of felid Aβ. Conclusions These results suggest that Aβ oligomers are more important than SP for NFT formation and the subsequent neurodegeneration. The domestic cat is a unique animal species that naturally replicates various AD pathologies, especially Aβ oligomer accumulation, NFT formation, and neuronal loss. Electronic supplementary material The online version of this article (doi:10.1186/s40478-015-0258-3) contains supplementary material, which is available to authorized users.
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Abstract
Baylisascaris potosis causes larva migrans in animals. The present study evaluated the prevalence of B. potosis in captive kinkajous ( Potos flavus ) and the ability of milbemycin to treat natural infections of B. potosis in 2 female wild-caught kinkajous. In 2012, fecal samples were collected from 16 kinkajous in 6 zoological gardens and 29 imported captive kinkajous from 4 pet traders in Japan. Although all samples from zoological gardens were negative, 8 kinkajous from traders were positive for Baylisascaris eggs, at least 4 of which were wild caught in the Republic of Guyana. No associated human illness was reported from any of the facilities. The 2 infected kinkajous received a single oral administration of Milbemycin® A Tablets, which delivers 0.69-0.89 mg/kg milbemycin oxime. Fecal examinations on days 14 and 30 were negative for Baylisascaris eggs. These results demonstrated that milbemycin oxime has possible anthelmintic efficacy against Baylisascaris roundworms in captive kinkajous. We conclude that Baylisascaris infections are highly prevalent in wild-caught kinkajous in Japan and that most of the infected kinkajous were imported from the Republic of Guyana.
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Affiliation(s)
- T Tokiwa
- Laboratory of Veterinary Pathology, School of Veterinary Medicine, Azabu University, 1-17-71 Fuchinobe, Chuo-ku, Sagamihara, Kanagawa 252-5201, Japan
| | - H Sugiyama
- Laboratory of Veterinary Pathology, School of Veterinary Medicine, Azabu University, 1-17-71 Fuchinobe, Chuo-ku, Sagamihara, Kanagawa 252-5201, Japan
| | - K Taira
- Laboratory of Veterinary Pathology, School of Veterinary Medicine, Azabu University, 1-17-71 Fuchinobe, Chuo-ku, Sagamihara, Kanagawa 252-5201, Japan
| | - Y Yoshikawa
- Laboratory of Veterinary Pathology, School of Veterinary Medicine, Azabu University, 1-17-71 Fuchinobe, Chuo-ku, Sagamihara, Kanagawa 252-5201, Japan
| | - Y Une
- Laboratory of Veterinary Pathology, School of Veterinary Medicine, Azabu University, 1-17-71 Fuchinobe, Chuo-ku, Sagamihara, Kanagawa 252-5201, Japan
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