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Matsubayashi M, Tsuchida S, Kobayashi A, Shibahara T, Teramoto I, Kido Y, Kaneko A, Nakamura H, Hasegawa M, Sasai K, Ushida K. Evaluation of the host specificity of Eimeria uekii and Eimeria raichoi for Japanese rock ptarmigans by oocyst transfer to taxonomically related birds. Parasitol Res 2023:10.1007/s00436-023-07875-7. [PMID: 37264281 DOI: 10.1007/s00436-023-07875-7] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2023] [Accepted: 05/10/2023] [Indexed: 06/03/2023]
Abstract
Eimeria spp. are protozoan parasites that are commonly found in a broad range of vertebrate hosts. These parasites generally exhibit strict host specificity, but some Eimeria spp. can infect groups of closely related species such as species within a genus or family. Compared with Eimeria spp. that infect livestock, limited information is available about such infections in wild animals including data on host specificity, virulence, and prevalence. The Japanese rock ptarmigan, Lagopus muta japonica, is an endangered bird belonging to the family Phasianidae, order Galliformes, and inhabits only alpine areas of Japan. In conservation efforts for these birds, two Eimeria spp., E. uekii and E. raichoi, were frequently detected. Here, we examined cross-transmission of the parasites to other bird species to characterize their infectivity as well as the development of experimental bird models to contribute to conservation programs by the oocyst transfer. Consequently, among the examined eight bird species (chickens, Japanese pheasants, turkeys, chukar partridges, quails, helmeted guineafowls and ducks), only turkeys (family Phasianidae, order Galliformes) could be infected with E. raichoi. However, the number of oocysts per feces was relatively low, and few parasites in the intestinal mucosa could be found by histopathological analyses. These results might indicate that E. uekii and E. raichoi are highly adapted to Japanese rock ptarmigans that inhabit the alpine zone although further studies are anticipated.
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Affiliation(s)
- Makoto Matsubayashi
- Departments of Veterinary Immunology, Graduate School of Veterinary Medical Sciences, Osaka Metropolitan University, 1-58 Rinku Orai Kita, Izumisano, Osaka, 598-8531, Japan.
- Department of Veterinary Parasitology, Faculty of Veterinary Medicine, Airlangga University, Surabaya, 60115, Indonesia.
| | - Sayaka Tsuchida
- College of Bioscience and Biotechnology, Chubu University, 1200 Matsumoto-Cho, Kasugai, Aichi, 487-8501, Japan
| | - Atsushi Kobayashi
- Shin-Etsu Nature Conservation Office Ministry of the Environment, Ministry of Environment, Nagano, 380-0846, Japan
| | - Tomoyuki Shibahara
- Departments of Veterinary Immunology, Graduate School of Veterinary Medical Sciences, Osaka Metropolitan University, 1-58 Rinku Orai Kita, Izumisano, Osaka, 598-8531, Japan
- Division of Pathology and Pathophysiology, National Institute of Animal Health, National Agriculture and Food Research Organization, Ibaraki, 305-0856, Japan
| | - Isao Teramoto
- Departments of Virology and Parasitology, Graduate School of Medicine, Osaka Metropolitan University, Osaka, 545-8585, Japan
| | - Yasutoshi Kido
- Departments of Virology and Parasitology, Graduate School of Medicine, Osaka Metropolitan University, Osaka, 545-8585, Japan
- Research Center of Infectious Disease Sciences, Graduate School of Medicine, Osaka Metropolitan University, Osaka, 545-8585, Japan
| | - Akira Kaneko
- Departments of Virology and Parasitology, Graduate School of Medicine, Osaka Metropolitan University, Osaka, 545-8585, Japan
- Research Center of Infectious Disease Sciences, Graduate School of Medicine, Osaka Metropolitan University, Osaka, 545-8585, Japan
| | - Hiroshi Nakamura
- General Foundation Hiroshi Nakamura International Institute for Ornithology, Nakagosho, Nagano, 380-0934, Japan
| | - Masami Hasegawa
- Department of Biology, Toho University, Funabashi, Chiba, 274-8510, Japan
| | - Kazumi Sasai
- Departments of Veterinary Immunology, Graduate School of Veterinary Medical Sciences, Osaka Metropolitan University, 1-58 Rinku Orai Kita, Izumisano, Osaka, 598-8531, Japan
| | - Kazunari Ushida
- College of Bioscience and Biotechnology, Chubu University, 1200 Matsumoto-Cho, Kasugai, Aichi, 487-8501, Japan.
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2
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Matsubayashi M, Teramoto I, Urakami I, Naohara J, Sasai K, Kido Y, Kaneko A. Evaluation of Cryptosporidium parvum oocyst inactivation following exposure to ultraviolet light-emitting diodes by in vitro excystation and dye staining assays. Parasitol Int 2022; 88:102557. [DOI: 10.1016/j.parint.2022.102557] [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] [Received: 09/16/2021] [Revised: 01/28/2022] [Accepted: 02/03/2022] [Indexed: 10/19/2022]
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Takahashi K, Matsubayashi M, Ohashi Y, Naohara J, Urakami I, Sasai K, Kido Y, Kaneko A, Teramoto I. Efficacy of ultraviolet light-emitting diodes (UV-LED) at four different peak wavelengths against Cryptosporidium parvum oocysts by inactivation assay using immunodeficient mice. Parasitol Int 2020; 77:102108. [PMID: 32224132 DOI: 10.1016/j.parint.2020.102108] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [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: 11/05/2019] [Revised: 01/31/2020] [Accepted: 03/22/2020] [Indexed: 11/26/2022]
Abstract
As an alternative to using ultraviolet (UV) lamps, which are made with mercury that is toxic to the environment and human health, UV light-emitting diodes (UV-LEDs) are expected to be effective for inactivating microorganisms in water. Although UV-LEDs have been reported to be effective against bacteria and viruses, the effectiveness of UV-LEDs against Cryptosporidium parasites has not been fully evaluated. As we report here, we have developed an in vivo quantitative inactivation assay for C. parvum oocysts using immunodeficient mice. Using the assay, we evaluated the effectiveness of treatment by UV lamp (254 nm) at approximately 1000 μJ/cm2 (for 3 s at a distance of 95 mm) compared to inactivation by commercially available UV-LEDs (with peak wavelengths of 268, 275, 284, and 289 nm). The shed patterns of oocysts after treatment with 284- and 289-nm wavelength UV-LEDs were significantly delayed compared to that after treatment with a UV lamp. These findings provide the first suggestion that UV-LEDs are effective against these parasites, as assessed using commercially available 350-mA UV-LEDs under conditions of fixed exposure distance and time.
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Affiliation(s)
- Karin Takahashi
- Department of Veterinary Science, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Osaka 598-8531, Japan
| | - Makoto Matsubayashi
- Department of Veterinary Science, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Osaka 598-8531, Japan; Department of Parasitology, Graduate School of Medicine, Osaka City University, Osaka 545-8585, Japan; Asian Health Science Research Institute, Osaka Prefecture University, Osaka 598-8531, Japan; Department of Veterinary Parasitology, Faculty of Veterinary Medicine, Airlangga University, Surabaya 60115, Indonesia..
| | - Yukio Ohashi
- Department of Biomedical Engineering, Faculty of Engineering, Okayama University of Science, Okayama 700-0005, Japan
| | - Jun Naohara
- Department of Biomedical Engineering, Faculty of Engineering, Okayama University of Science, Okayama 700-0005, Japan
| | | | - Kazumi Sasai
- Department of Veterinary Science, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Osaka 598-8531, Japan; Asian Health Science Research Institute, Osaka Prefecture University, Osaka 598-8531, Japan
| | - Yasutoshi Kido
- Department of Parasitology, Graduate School of Medicine, Osaka City University, Osaka 545-8585, Japan
| | - Akira Kaneko
- Department of Parasitology, Graduate School of Medicine, Osaka City University, Osaka 545-8585, Japan; Department of Parasitology and Research Centre for Infectious Disease Sciences, Graduate School of Medicine, Osaka City University, Osaka 545-8585, Japan
| | - Isao Teramoto
- Department of Parasitology, Graduate School of Medicine, Osaka City University, Osaka 545-8585, Japan
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Abstract
Zinc (Zn) is an essential element, but excess amounts are known to cause neurotoxic effects. The risk of excessive Zn intake is increased by supplementing food intake with dietary supplements. Ageing affects many cellular processes that predispose individuals to neurodegeneration. Indeed, the prevalence of senile dementia such as Alzheimer's disease, Parkinson's disease, and vascular-type dementia increases with age. As such, we investigated the effects of long-term exposure to excess Zn on learning and memory in aged mice. ICR-JCL female mice (aged 26 weeks) were administered 0, 200, or 500 ppm Zn as zinc chloride in drinking water for 30 weeks. After 30-week administration, aged female animals were subjected to Y-maze, novel object recognition, and step-through passive avoidance tests. Chronic exposure to Zn did not inhibit learning and memory in the Y-maze test, but dose-dependently inhibited learning and memory in novel object recognition and step-through passive avoidance tests. These results indicate the potential for chronic Zn exposure to dose-dependently inhibit both long-term and novel object recognition memory. Results of microarray analysis revealed significant changes in gene expression of transthyretin and many olfactory receptors in the hippocampus of Zn-treated mice.
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Affiliation(s)
- Kaoru Yoshida
- Department of Food Science and Nutrition, Doshisha Women's College of Liberal Arts
| | - Min Gi
- Department of Molecular Pathology, Osaka City University Graduate School of Medicine.,Current address: Department of Environmental Risk Assessment, Osaka City University Graduate School of Medicine
| | - Masaki Fujioka
- Department of Molecular Pathology, Osaka City University Graduate School of Medicine
| | - Isao Teramoto
- Department of Parasitology, Osaka City University Graduate School of Medicine
| | - Hideki Wanibuchi
- Department of Molecular Pathology, Osaka City University Graduate School of Medicine
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Matsubayashi M, Yamaguchi H, Hatta T, Kawahara F, Hatabu T, Iseki H, Yamagishi J, Isobe T, Teramoto I, Kaneko A, Kita K, Tsuji N, Sasai K. Transitions in morphological forms and rapid development of the asexual schizonts of Eimeria tenella through serial passaging in chicks. Infect Genet Evol 2019; 75:103993. [PMID: 31394291 DOI: 10.1016/j.meegid.2019.103993] [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] [Subscribe] [Scholar Register] [Received: 04/26/2019] [Revised: 07/23/2019] [Accepted: 08/03/2019] [Indexed: 10/26/2022]
Abstract
Attenuated strains of avian Eimeria parasites, generated by the selection of precocious lines through serial passaging in chicks, have been used widely as live vaccines. Detailed morphological transitions including their life cycle depending on the passages remain poorly understood. Here, we showed early development and acceleration of transitions in morphological forms of the asexual schizonts of E. tenella that had been attenuated for virulence by serial passaging. Our results may be helpful in understanding parasitism, facilitating further molecular analyses such as comparative genomic or transcriptomic tests.
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Affiliation(s)
- Makoto Matsubayashi
- Department of Veterinary Science, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Izumisano, Osaka 598-8531, Japan; Department of Parasitology, Graduate School of Medicine, Osaka City University, Osaka, Osaka 545-8585, Japan.
| | - Hiroki Yamaguchi
- Department of Veterinary Science, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Izumisano, Osaka 598-8531, Japan
| | - Takeshi Hatta
- Department of Parasitology, Kitasato University School of Medicine, Kitasato, Minami-ku, Sagamihara, Kanagawa 252-0374, Japan
| | | | - Toshimitsu Hatabu
- Laboratory of Animal Physiology, Graduate School of Environmental and Life Science, Okayama University, Okayama, Okayama 700-8530, Japan
| | - Hiroshi Iseki
- Division of Viral Disease and Epidemiology, National Institute of Animal Health, National Agricultural and Food Research Organization, Tsukuba, Ibaraki 305-0856, Japan
| | - Junya Yamagishi
- Research Center for Zoonosis Control, Hokkaido University, Sapporo, Hokkaido 001-0020, Japan; Global Station for Zoonosis Control, GI-CoRE, Hokkaido University, Sapporo, Hokkaido 001-0020, Japan
| | - Takashi Isobe
- Japan Livestock Technology Association, Bunkyo, Tokyo 113-0034, Japan
| | - Isao Teramoto
- Department of Parasitology, Graduate School of Medicine, Osaka City University, Osaka, Osaka 545-8585, Japan
| | - Akira Kaneko
- Department of Parasitology, Graduate School of Medicine, Osaka City University, Osaka, Osaka 545-8585, Japan; Department of Parasitology and Research Centre for Infectious Disease Sciences, Graduate School of Medicine, Osaka City University, Osaka, Osaka, 545-8585, Japan
| | - Kiyoshi Kita
- School of Tropical Medicine and Global Health, Nagasaki University, Nagasaki, Nagasaki 852-8523, Japan; Department of Host-Defense Biochemistry, Institute of Tropical Medicine (NEKKEN), Nagasaki University, Nagasaki, Nagasaki 852-8523, Japan
| | - Naotoshi Tsuji
- Department of Parasitology, Kitasato University School of Medicine, Kitasato, Minami-ku, Sagamihara, Kanagawa 252-0374, Japan
| | - Kazumi Sasai
- Department of Veterinary Science, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Izumisano, Osaka 598-8531, Japan
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Namikawa H, Takemoto Y, Shimazaki I, Makuuchi A, Kobayashi M, Kinuhata S, Yamada K, Fujimoto H, Toyoda H, Kamata N, Tochino Y, Teramoto I, Abe N, Morimura M, Kakeya H, Shuto T. A Case of Imported Taenia asiatica Infection in Japan. Jpn J Infect Dis 2018; 71:170-171. [PMID: 29491231 DOI: 10.7883/yoken.jjid.2017.082] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Affiliation(s)
- Hiroki Namikawa
- Department of Medical Education and General Practice, Osaka City University, Graduate School of Medicine.,Department of Infection Control Science, Osaka City University, Graduate School of Medicine
| | - Yasuhiko Takemoto
- Department of Medical Education and General Practice, Osaka City University, Graduate School of Medicine
| | - Ikuji Shimazaki
- Department of Medical Education and General Practice, Osaka City University, Graduate School of Medicine
| | - Ayako Makuuchi
- Department of Medical Education and General Practice, Osaka City University, Graduate School of Medicine
| | - Masanori Kobayashi
- Department of Medical Education and General Practice, Osaka City University, Graduate School of Medicine
| | - Shigeki Kinuhata
- Department of Medical Education and General Practice, Osaka City University, Graduate School of Medicine
| | - Koichi Yamada
- Department of Infection Control Science, Osaka City University, Graduate School of Medicine
| | - Hiroki Fujimoto
- Department of Infection Control Science, Osaka City University, Graduate School of Medicine
| | - Hiromitsu Toyoda
- Department of Medical Education and General Practice, Osaka City University, Graduate School of Medicine
| | - Noriko Kamata
- Department of Medical Education and General Practice, Osaka City University, Graduate School of Medicine
| | - Yoshihiro Tochino
- Department of Medical Education and General Practice, Osaka City University, Graduate School of Medicine
| | - Isao Teramoto
- Department of Parasitology, Osaka City University, Graduate School of Medicine
| | - Niichiro Abe
- Department of Microbiology, Osaka City Institute of Public Health and Environmental Sciences
| | - Mina Morimura
- Department of Medical Education and General Practice, Osaka City University, Graduate School of Medicine
| | - Hiroshi Kakeya
- Department of Infection Control Science, Osaka City University, Graduate School of Medicine
| | - Taichi Shuto
- Department of Medical Education and General Practice, Osaka City University, Graduate School of Medicine
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Kimura M, Teramoto I, Chan CW, Idris ZM, Kongere J, Kagaya W, Kawamoto F, Asada R, Isozumi R, Kaneko A. Improvement of malaria diagnostic system based on acridine orange staining. Malar J 2018; 17:72. [PMID: 29415724 PMCID: PMC5804042 DOI: 10.1186/s12936-018-2214-8] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [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: 10/02/2017] [Accepted: 01/30/2018] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Rapid diagnosis of malaria using acridine orange (AO) staining and a light microscope with a halogen lamp and interference filter was deployed in some malaria-endemic countries. However, it has not been widely adopted because: (1) the lamp was weak as an excitation light and the set-up did not work well under unstable power supply; and, (2) the staining of samples was frequently inconsistent. METHODS The halogen lamp was replaced by a low-cost, blue light-emitting diode (LED) lamp. Using a reformulated AO solution, the staining protocol was revised to make use of a concentration gradient instead of uniform staining. To evaluate this new AO diagnostic system, a pilot field study was conducted in the Lake Victoria basin in Kenya. RESULTS Without staining failure, malaria infection status of about 100 samples was determined on-site per one microscopist per day, using the improved AO diagnostic system. The improved AO diagnosis had both higher overall sensitivity (46.1 vs 38.9%: p = 0.08) and specificity (99.0 vs 96.3%) than the Giemsa method (N = 1018), using PCR diagnosis as the standard. CONCLUSIONS Consistent AO staining of thin blood films and rapid evaluation of malaria parasitaemia with the revised protocol produced superior results relative to the Giemsa method. This AO diagnostic system can be set up easily at low cost using an ordinary light microscope. It may supplement rapid diagnostic tests currently used in clinical settings in malaria-endemic countries, and may be considered as an inexpensive tool for case surveillance in malaria-eliminating countries.
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Affiliation(s)
- Masatsugu Kimura
- Radioisotope Centre, Graduate School of Medicine, Osaka City University, 1-4-3, Asahi-machi, Abeno-ku, Osaka, 545-8585, Japan.
| | - Isao Teramoto
- Department of Parasitology and Research Center for Infectious Disease Sciences, Graduate School of Medicine, Osaka City University, 1-4-3, Asahi-machi, Abeno-ku, Osaka, 545-8585, Japan
| | - Chim W Chan
- Island Malaria Group, Department of Microbiology, Tumor and Cell Biology (MTC), Karolinska Institutet, Nobels väg 16, 171 77, Stockholm, Sweden
| | - Zulkarnain Md Idris
- Island Malaria Group, Department of Microbiology, Tumor and Cell Biology (MTC), Karolinska Institutet, Nobels väg 16, 171 77, Stockholm, Sweden.,Department of Parasitology and Medical Entomology, Faculty of Medicine, Universiti Kebangsaan Malaysia Medical Centre, 56000, Kuala Lumpur, Malaysia
| | - James Kongere
- Nagasaki University Nairobi Research Station, NUITM-KEMRI Project, Nairobi, 00202, Kenya
| | - Wataru Kagaya
- Department of Parasitology and Research Center for Infectious Disease Sciences, Graduate School of Medicine, Osaka City University, 1-4-3, Asahi-machi, Abeno-ku, Osaka, 545-8585, Japan
| | - Fumihiko Kawamoto
- Institute of Tropical Disease, Kampus C Airlangga University, Surabaya, 60115, Indonesia
| | - Ryoko Asada
- Department of Radiology, Osaka Butsuryo College, 3-33, Ohtori Kita-machi, Nishi-ku, Sakai, Osaka Prefecture, 593-8328, Japan
| | - Rie Isozumi
- Department of Parasitology and Research Center for Infectious Disease Sciences, Graduate School of Medicine, Osaka City University, 1-4-3, Asahi-machi, Abeno-ku, Osaka, 545-8585, Japan
| | - Akira Kaneko
- Department of Parasitology and Research Center for Infectious Disease Sciences, Graduate School of Medicine, Osaka City University, 1-4-3, Asahi-machi, Abeno-ku, Osaka, 545-8585, Japan.,Island Malaria Group, Department of Microbiology, Tumor and Cell Biology (MTC), Karolinska Institutet, Nobels väg 16, 171 77, Stockholm, Sweden.,Institute of Tropical Medicine, Nagasaki University, Nagasaki, 852-8102, Japan
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Saito T, Kikuchi A, Kaneko A, Isozumi R, Teramoto I, Kimura M, Hirasawa N, Hiratsuka M. Rapid and sensitive multiplex single-tube nested PCR for the identification of five human Plasmodium species. Parasitol Int 2018; 67:277-283. [PMID: 29374580 DOI: 10.1016/j.parint.2018.01.005] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2017] [Revised: 01/11/2018] [Accepted: 01/23/2018] [Indexed: 10/18/2022]
Abstract
Malaria is caused by five species of Plasmodium in humans. Microscopy is currently used for pathogen detection, requiring considerable training and technical expertise as the parasites are often difficult to differentiate morphologically. Rapid diagnostic tests are as reliable as microscopy and offer faster diagnoses but possess lower detection limits and are incapable of distinguishing among the parasitic species. To improve global health efforts towards malaria control, a rapid, sensitive, species-specific, and economically viable diagnostic method is needed. In this study, we designed a malaria diagnostic method involving a multiplex single-tube nested PCR targeting Plasmodium mitochondrial cytochrome c oxidase III and single-stranded tag hybridization chromatographic printed-array strip. The detection sensitivity was found to be at least 40 times higher than that of agarose gel electrophoresis with ethidium bromide. This system also enables the identification of both single- and mixed-species malaria infections. The assay was validated with 152 Kenyan samples; using nested PCR as the standard, the assay's sensitivity and specificity were 88.7% and 100.0%, respectively. The turnaround time required, from PCR preparation to signal detection, is 90min. Our method should improve the diagnostic speed, treatment efficacy, and control of malaria, in addition to facilitating surveillance within global malaria eradication programs.
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Affiliation(s)
- Takahiro Saito
- Laboratory of Pharmacotherapy of Life-Style Related Diseases, Graduate School of Pharmaceutical Sciences, Tohoku University, Sendai 980-8578, Japan
| | - Aoi Kikuchi
- Laboratory of Pharmacotherapy of Life-Style Related Diseases, Graduate School of Pharmaceutical Sciences, Tohoku University, Sendai 980-8578, Japan
| | - Akira Kaneko
- Department of Parasitology, Graduate School of Medicine, Osaka City University, 1-4-3, Asahi-machi, Abeno-ku, Osaka 545-8585, Japan
| | - Rie Isozumi
- Department of Parasitology, Graduate School of Medicine, Osaka City University, 1-4-3, Asahi-machi, Abeno-ku, Osaka 545-8585, Japan
| | - Isao Teramoto
- Department of Parasitology, Graduate School of Medicine, Osaka City University, 1-4-3, Asahi-machi, Abeno-ku, Osaka 545-8585, Japan
| | - Masatsugu Kimura
- Radioisotope Centre, Graduate School of Medicine, Osaka City University, 1-4-3, Asahi-machi, Abeno-ku, Osaka 545-8585, Japan
| | - Noriyasu Hirasawa
- Laboratory of Pharmacotherapy of Life-Style Related Diseases, Graduate School of Pharmaceutical Sciences, Tohoku University, Sendai 980-8578, Japan
| | - Masahiro Hiratsuka
- Laboratory of Pharmacotherapy of Life-Style Related Diseases, Graduate School of Pharmaceutical Sciences, Tohoku University, Sendai 980-8578, Japan; Department of Pharmaceutical Sciences, Tohoku University Hospital, Sendai 980-8574, Japan; Tohoku Medical Megabank Organization, Tohoku University, Sendai 980-8575, Japan.
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9
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Matsubayashi M, Matsuura Y, Nukata S, Daizi Y, Shibahara T, Teramoto I, Matsuo T, Uni S, Hatta T, Kaneko A, Tsuji N, Sasai K. First detection and molecular identification of Entamoeba bovis from Japanese cattle. Parasitol Res 2017; 117:339-342. [DOI: 10.1007/s00436-017-5689-2] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2017] [Accepted: 11/17/2017] [Indexed: 10/18/2022]
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10
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Yamanaka M, Kusutani N, Sowa-Osako J, Kotsubo E, Tanaka S, Ohsawa M, Teramoto I, Isozumi R, Kaneko A, Tsuruta D. Gnathostomiasis caused by ingestion of rawOncorhynchus masou ishikawaeroe. J Dermatol 2017; 44:e208-e209. [DOI: 10.1111/1346-8138.13893] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Mika Yamanaka
- Department of Dermatology; Osaka City University Graduate School of Medicine; Osaka Japan
| | - Nao Kusutani
- Department of Dermatology; Osaka City University Graduate School of Medicine; Osaka Japan
| | - Junko Sowa-Osako
- Department of Dermatology; Osaka City University Graduate School of Medicine; Osaka Japan
| | - Eriko Kotsubo
- Department of Dermatology; Osaka City University Graduate School of Medicine; Osaka Japan
- Department of Izumi Municipal Hospital; Osaka Japan
| | - Sayaka Tanaka
- Department of Diagnostic Pathology; Osaka City University Graduate School of Medicine; Osaka Japan
| | - Masahiko Ohsawa
- Department of Diagnostic Pathology; Osaka City University Graduate School of Medicine; Osaka Japan
| | - Isao Teramoto
- Department of Parasitology; Osaka City University Graduate School of Medicine; Osaka Japan
| | - Rie Isozumi
- Department of Parasitology; Osaka City University Graduate School of Medicine; Osaka Japan
| | - Akira Kaneko
- Department of Parasitology; Osaka City University Graduate School of Medicine; Osaka Japan
| | - Daisuke Tsuruta
- Department of Dermatology; Osaka City University Graduate School of Medicine; Osaka Japan
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11
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Idris ZM, Chan CW, Kongere J, Gitaka J, Logedi J, Omar A, Obonyo C, Machini BK, Isozumi R, Teramoto I, Kimura M, Kaneko A. High and Heterogeneous Prevalence of Asymptomatic and Sub-microscopic Malaria Infections on Islands in Lake Victoria, Kenya. Sci Rep 2016; 6:36958. [PMID: 27841361 PMCID: PMC5107902 DOI: 10.1038/srep36958] [Citation(s) in RCA: 54] [Impact Index Per Article: 6.8] [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] [Received: 07/21/2016] [Accepted: 10/24/2016] [Indexed: 11/17/2022] Open
Abstract
Kenya is intensifying its national efforts in malaria control to achieve malaria elimination. Detailed characterization of malaria infection among populations living in the areas where the disease is endemic in Kenya is a crucial priority, especially for planning and evaluating future malaria elimination strategy. This study aimed to investigate the distribution and extent of malaria infection on islands in Lake Victoria of Kenya to aid in designing new interventions for malaria elimination. Five cross-sectional surveys were conducted between January 2012 and August 2014 on four islands (Mfangano, Takawiri, Kibuogi and Ngodhe) in Lake Victoria and a coastal mainland (Ungoye). Malaria prevalence varied significantly among settings: highest in Ungoye, followed by the large island of Mfangano and lowest in the three remaining small islands. Of the 3867 malaria infections detected by PCR, 91.8% were asymptomatic, 50.3% were sub-microscopic, of which 94% were also asymptomatic. We observed geographical differences and age dependency in both proportion of sub-microscopic infections and asymptomatic parasite carriage. Our findings highlighted the local heterogeneity in malaria prevalence on islands and a coastal area in Lake Victoria, and provided support for the inclusion of mass drug administration as a component of the intervention package to eliminate malaria on islands.
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Affiliation(s)
- Zulkarnain Md Idris
- Island Malaria Group, Department of Microbiology, Tumor and Cell Biology, Karolinska Institutet, Stockholm, 17177, Sweden.,Department of Parasitology and Medical Entomology, Faculty of Medicine, Universiti Kebangsaan Malaysia Medical Centre, Kuala Lumpur, 56000, Malaysia
| | - Chim W Chan
- Island Malaria Group, Department of Microbiology, Tumor and Cell Biology, Karolinska Institutet, Stockholm, 17177, Sweden
| | - James Kongere
- Nagasaki University Nairobi Research Station, NUITM-KEMRI Project, Nairobi, 00202, Kenya
| | - Jesse Gitaka
- Department of Clinical Medicine, Mount Kenya University, Thika, 01000, Kenya
| | - John Logedi
- National Malaria Control Programme, Ministry of Public Health and Sanitation, Nairobi, 00100, Kenya
| | - Ahmeddin Omar
- National Malaria Control Programme, Ministry of Public Health and Sanitation, Nairobi, 00100, Kenya
| | - Charles Obonyo
- Kenya Medical Research Institute (KEMRI), Centre for Global Health Research, Kisumu, 40100, Kenya
| | - Beatrice Kemunto Machini
- National Malaria Control Programme, Ministry of Public Health and Sanitation, Nairobi, 00100, Kenya
| | - Rie Isozumi
- Department of Parasitology, Graduate School of Medicine, Osaka City University, Osaka, 558-8585, Japan
| | - Isao Teramoto
- Department of Parasitology, Graduate School of Medicine, Osaka City University, Osaka, 558-8585, Japan
| | - Masatsugu Kimura
- Department of Parasitology, Graduate School of Medicine, Osaka City University, Osaka, 558-8585, Japan
| | - Akira Kaneko
- Island Malaria Group, Department of Microbiology, Tumor and Cell Biology, Karolinska Institutet, Stockholm, 17177, Sweden.,Department of Parasitology, Graduate School of Medicine, Osaka City University, Osaka, 558-8585, Japan.,Institute of Tropical Medicine, Nagasaki University, Nagasaki, 852-8102, Japan
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Yaguchi Y, Okabayashi S, Abe N, Masatou H, Iida S, Teramoto I, Matsubayashi M, Shibahara T. Genetic analysis of Enterobius vermicularis isolated from a chimpanzee with lethal hemorrhagic colitis and pathology of the associated lesions. Parasitol Res 2014; 113:4105-9. [PMID: 25138069 DOI: 10.1007/s00436-014-4080-9] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2014] [Accepted: 08/11/2014] [Indexed: 11/30/2022]
Abstract
Human pinworms, Enterobius vermicularis, are normally recognized as minor pathogens. However, a fatal case of human pinworm infection has been reported in a nonhuman primate, a zoo reared chimpanzee. Here, we histopathologically examined the lesions in tissues from the deceased chimpanzee and genetically characterized the isolated worms to investigate the pathogenicity and determine the phylogeny. We identified ulcers deep in the submucosa where many parasites were found to have invaded the lamina propria mucosa or submucous tissue. An inflammatory reaction consisting mainly of neutrophils and lymphocytes but not eosinophils was observed around the parasites, and intense hemorrhage in the lamina propria was confirmed. The parasites were morphologically similar to E. vermicularis based on the shape of the copulatory spicules. Mitochondrial cytochrome c oxidase subunit 1 gene products were amplified from worm DNA by PCR and were genetically identified as E. vermicularis based on >98.7% similarity of partial sequences. Phylogenetic analysis revealed that the sequences clustered together with other chimpanzee E. vermicularis isolates in a group which has been referred to as type C and which differs from human isolates (type A). The samples were negative for bacterial pathogens and Entamoeba histolytica indicating that E. vermicularis could be pathogenic in chimpanzees. Phylogenetic clustering of the isolates indicated that the parasite may be host specific.
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Affiliation(s)
- Yuji Yaguchi
- Ibaraki Prefectural Kenhoku Livestock Hygiene Service Center, Mito, Ibaraki, 310-0002, Japan
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