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Main articles published in academic journals

[ Pathogens ]

Papers written in English

  • Kubota-Aizawa S, Ohno K, Kanemoto H, Nakashima K, Fukushima K, Uchida K, Chambers JK, Goto-Koshino Y, Mimuro H, Watanabe T, Sekizaki T, Tsujimoto H. Epidemiological study on feline gastric Helicobacter spp. in Japan. J Vet Med Sci 79:876-880, 2017.
  • Okura M, Nozawa T, Watanabe T, Murase K, Nakagawa I, Takamatsu D, Osaki M, Sekizaki T, Gottschalk M, Hamada S, Maruyama F. A locus encoding variable defence systems against invading DNA identified in Streptococcus suis. Genome Biol Evol 9:1000-1012, 2017.
  • Meekhanon N, Kaewmongkol S, Phimpraphai W, Okura M, Osaki M, Sekizaki T, Takamatsu D. Potentially hazardous Streptococcus suis strains latent in asymptomatic pigs in a major swine production area of Thailand. J Med Microbiol 66:662-669, 2017.
  • Ohta T, Kimura K, Katsuda K, Hobayashi H, Minami O, Haritani M and Onodera T. Proliferative enteropathy by Lawsonia intracellularis in chicken. J. Comp. Pathol 156:158-161, 2017.
  • Jagoda S, Honein K, Arulkanthan A, Ushio H, and Asakawa, S. Genome sequencing and annotation of Aeromonas veronii strain Ae52, a
    multidrug- resistant isolate fromsepticaemic gold fish (Carassius auratus)in Sri Lanka. Genomics Data 11:46-48, 2017.
  • Okura M, Osaki M, Nomoto R, Arai S, Osawa R, Sekizaki T, Takamatsu D. Current taxonomical situation of Streptococcus suis. Pathogens 5:45, 2016.
  • Tohya M, Watanabe T, Maruyama F, Arai S, Ota A, Athey TB, Fittipaldi N, Nakagawa I, Sekizaki T. Comparative genome analyses of Streptococcus suis isolates from endocarditis demonstrate persistence of dual phenotypic clones. PLOS ONE 11:e0159558, 2016.
  • Shiba T, Watanabe T, Kachi H, Koyanagi T, Maruyama N, Murase K, Takeuchi Y, Maruyama F, Izumi Y, Nakagawa I. Distinct interacting core taxa in co-occurrence networks enable discrimination of polymicrobial oral diseases with similar symptoms. Sci Rep. 8:30997, 2016.
  • Auger JP, Meekhanon N, Okura M, Osaki M, Gottschalk M, Sekizaki T, Takamatsu D. Streptococcus suis serotype 2 capsule in vivo. Emerg Infect Dis. 22:1793-1796, 2016.
  • Yokoyama H, Funaguma N and Kobayashi S. In vitro inactivation of Kudoa septempunctata spores infecting the muscle of olive flounder Paralichthys olivaceus. Foodborne Pathogens and Disease., 13: 21-27, 2016
  • Nishioka T, Satoh J, Mekata T, Mori K, Ohta K, Morioka T, Lu M, Yokoyama H, and Yoshinaga T. Efficacy of sand filtration and ultraviolet irradiation as seawater treatment to prevent Kudoa septempunctata (Myxozoa: Multivalvulida) infection in olive flounder Paralichthys olivaceus. Fish Pathology 51: 23-27, 2016
  • Suzuki J, Murata R, Yokoyama H, Sadamasu K and Kai A. Detection rate of diarrhoea-causing Kudoa hexapunctata in Pacific bluefin tuna Thunnus orientalis from Japanese waters. Int J Food Microbiol 194:1-6, 2015.
  • Shin S-P, Zenke K, Yokoyama H, and Yoshinaga T. Factors affecting sporoplasm release in Kudoa septempunctata. Parasitol Res 114:795-799, 2015.
  • Yokoyama H, Lu M, Mori K, Satoh J, Mekata T, and Yoshinaga T. Infection dynamics of Kudoa septempunctata (Myxozoa: Multivalvulida) in hatchery-produced olive flounder Paralichthys olivaceus. Fish Pathol 50:60-67, 2015.
  • Shin S-P, Zenke K, and Yokoyama H. Characterization of preteases isolated from Kudoa septempunctata. Korean J Vet Res 55:175-179, 2015.
  • Arai S, Tohya M, Yamada R, Osawa R, Nomoto R, Kawamura Y, and Sekizaki T. Development of loop-mediated isothermal amplification to detect Streptococcus suis and its application to retail pork meat in Japan. Int J Food Microbiol. 208:35-42, 2015.
  • Nomoto R, Maruyama F, Ishida S, Tohya M, Sekizaki T, and Osawa R. Reappraisal of the taxonomy of Streptococcus suis serotypes 20, 22, and 26: Streptococcus parasuis sp. nov. Int J Syst Evol Microbiol. 65:438-443, 2015.
  • Ishida S, Le HTT, Osawa R, Tohya M, Nomoto R, Kawamura Y, Takahashi T, Kikuchi N, Kikuchi K, and Sekizaki T. Development of an appropriate PCR system for 1 the reclassification of Streptococcus suis. J Microbiol Method. 107:66-70, 2014.
  • Kerdsin A, Akeda Y, Hatrongjit R, Detchawna U, Sekizaki T, Hamada S, Gottschalk M, Oishi K. Streptococcus suis Serotyping by a New Multiplex PCR. J Med Microbiol. 63:824-830, 2014.
  • Lakkitjaroen N, Takamatsu D, Okura M, Sato M, Osaki M, and Sekizaki T. Capsule loss or death: The position of mutations among capsule genes sways the destiny of Streptococcus suis. FEMS Microbiol Lett. 354:46-54, 2014.
  • Okura M, Lachance C, Osaki M, Sekizaki T, Maruyama F, Nozawa T, Nakagawa I, Hamada S, Rossignol C, Gottschalk M and Takamatsu D. Development of a two-step multiplex PCR assay for typing of capsular polysaccharide synthesis gene clusters of Streptococcus suis. J Clin Microbiol. 52:1714-1719, 2014.
  • Holger Feroudj, Takuya Matsumoto, Yohei Kurosu, Gen Kaneko, Hideki Ushio,Katsuaki Suzuki, Hidehiro Kondo, Ikuo Hirono, Yuji Nagashima, Seiji Akimoto,Kazushige Usui, Shigeharu Kinoshita, Shuichi Asakawa, Masaaki Kodama, Shugo Watabe. DNA microarray analysis on gene candidates possibly related to tetrodotoxin accumulation in pufferfish. Toxicon 11/2013.
  • Yoji Igarashi, Hiroyuki Doi, Yusuke Yamanoue, Shigeharu Kinoshita, Toshiaki Ishibashi, Hideki Ushio, Shuichi Asakawa, Mutsumi Nishida, Shugo Watabe.
    Molecular phylogenetic relationship of Tetraodon pufferfish based on mitochondrial DNA analysis. Fisheries Science 79(2):243-250,2013.
  • Hiroko Yamaguchi, Misako Nakaya, Gen Kaneko, Chie Yoneda, Toshitaka Mochizuki, Katsuya Fukami, Hideki Ushio, Shugo Watabe. Comparison in taste and extractive components of boiled dorsal muscle and broth from half-smooth golden puffer Lagocephalus spadiceus caught in Japan with those of the same fish imported. Fisheries Science 79(2):327-334, 2013.
  • Nomoto R, Tien le HT, Sekizaki T, and Osawa R. Antimicrobial susceptibility of Streptococcus gallolyticus isolated from humans and animals. Jpn J Infect Dis. 66(4):334-336, 2013.
  • Okura M, Takamatsu D, Maruyama F, Nozawa T, Nakagawa I, Osaki M, Sekizaki T, Gottschalk M, Kumagai Y, and Hamada S. Genetic analysis of capsular polysaccharide synthesis gene clusters from all serotypes of Streptococcus suis: potential mechanisms for the generation of capsular variation. Appl Environ Microbiol. 79:2796-2806, 2013.
  • Ohkochi M., Koseki S., Kunou M., Sugiura K. and Tsubone H. Growth Modeling of Listeria monocytogenes in Pasteurized Liquid Egg. J Food Protect, Vol. 76(9):1549–1556, 2013.
  • Lee KI, Kobayashi N, Watanabe M, Sugita-Konishi Y, Tsubone H, Kumagai S, Hara-Kudo Y. Spread and change in stress resistance of Shiga toxin-producing Escherichia coli O157 on fungal colonies. Microb Biotechnol. doi: 10.1111/1751-7915.12071., 2013.
  • Momotani E, Ozaki H, Hori M, Yamamoto S, Kuribayashi T, Eda S, Ikegami M. Mycobacterium avium subsp. paratuberculosis lipophilic antigen causes Crohn’s disease-type necrotizing colitis in Mice. Springerplus 1(1):47, 2012.
  • Momotani E, Romona NM, Yoshihara K, Momotani Y, Hori M, Ozaki H, Eda S, Ikegami M. Molecular pathogenesis of bovine paratuberculosis and human inflammatory bowel diseases. Vet Immunol Immunopathol 148:55-68, 2012.
  • Lee, K., French, N. P., Jones, G., Hara-Kudo, Y., Iyoda, S., Kobayashi, H., Sugita-Konishi, Y., Tsubone, H., and Kumagai, S. Variation in Stress Resistance Patterns among stx Genotypes and Genetic Lineages of Shiga Toxin-Producing Escherichia coli O157. Appl Environ Microbiol. 78(9):3361-3368., 2012.
  • Lee, K., Watanabe, M., Sugita-Konishi, Y., Hara-Kudo, Y., and Kumagai, S. Penicillium camemberti and Penicillium roqueforti Enhance the Growth and Survival of Shiga Toxin-Producing Escherichia coli O157 under Mild Acidic Conditions. J Food Sci 77(2):M102-M107, 2012.
  • Anusak, K., Dejsirilert, S., Akeda, Y., Sekizaki, T., Hamada, S., Gottschalk, M., Oishi, K. Fifteen Streptococcus suis serotypes identified by multiplex PCR. J Med Microbiol. 61:1669-1672, 2012.
  • Fittipaldi, N., Xu, J., Lacouture, S., Tharavichitkul, P., Osaki, M., Sekizaki, T., Takamatsu, D., Gottschalk, M. Lineage and Virulence of Streptococcus suis Serotype 2 Isolates from North America. Emerg Infect Dis. 17(12):2239-2244, 2011.
  • Lakkitjaroen, N., Takamatsu, D., Okura, M., Sato, M., Osaki, M., Sekizaki, T. Loss of Capsule among Streptococcus suis Isolates from Porcine Endocarditis and its Biological Significance. J Med Microbiol. 60:1669-1676, 2011.
  • Okura, M., Osaki, M., Fittipaldi, N., Gottschalk, M., Sekizaki, T., and Takamatsu, D. The minor pilin subunit Sgp2 is necessary for assembly of the pilus encoded by the srtG cluster of Streptococcus suis. J Bacteriol. 193:822-831, 2011.
  • Lee, K., French, NP., Hara-Kudo, Y., Iyoda, S., Kobayashi, H., Sugita-Konishi, Y., Tsubone, H., and Kumagai, S. Multivariate Analyses Revealed Distinctive Features Differentiating Human and Cattle Isolates of Shiga Toxin-Producing Escherichia coli O157 in Japan. J Clin Microbiol. 49(4):1495-1500, 2011.
  • Minami, F., Nagai, M., Ito, M., Matsuda, T., Takai, H., Jinkawa, Y., Shimano, T., Hayashi, M., Seki, Y., Sakoda, Y., Sugiura, K., Akashi, H. Reactivity and prevalence of neutralizing antibodies against Japanese strains of bovine viral diarrhea virus subgenotypes. Comp Immunol Microbiol Infect Dis 34(1):35-39, 2011.
  • Fittipaldi, N., Takamatsu, D., Doinguez-Punaro, M., Lecours, M., Montpetit, D., Osaki, M., Sekizaki, T., and Gottschalk, M. Mutations in the gene encoding the ancillary pilin subunit of the Streptococcus suis srtF cluster result in pili formed by the major pilin subunit only. PLoS ONE 5:e8426, 2010.
  • Iha, K., Omatsu, T., Watanabe, S., Ueda, N., Taniguchi, R., Fujii, H., Ishii, T., Kyuwa, S., Akashi, H., Yoshikawa, Y. Molecular cloning and expression analysis of the bat Toll-like receptors 3, 7, and 9. J Vet Med Sci 72(2):217-220, 2010.
  • Iha, K., Omatsu, T., Watanabe, S., Ueda, N., Taniguchi, R., Fujii, H., Ishii, T., Kyuwa, S., Akashi, H., Yoshikawa, Y. Molecular cloning and sequencing of the cDNAs encoding the bat interleukin (IL)-2, IL-4, IL-6, IL-10, IL-12p40, and tumor necrosis factor ?alpha. J Vet Med Sci 71:1691-1695, 2009.
  • Takamatsu, D., Nishino, H., Ishiji, T., Osaki, M., Fittipaldi, N., Gottschalk, M., Tharavichitkul, P., Takai, S., and Sekizaki, T. Genetic organization and preferential distribution of putative pilus gene clusters in Streptococcus suis. Vet Microbiol 138(1-2):132-139, 2009.
  • Sugiura, K., Onodera, T., and Bradley, R. Epidemiological features of the BSE epidemic in Japan. OIE Sci Rev 28 (3):945-956, 2009.
  • Shinoda, N., Yoshida, T., Kusama, T., Takagi, M., Onodera, T., and Sugiura, K. High GC contents of primer 5′-end increases reaction efficiency in polymerase chain reaction. NN & NA 28:324-330, 2009.
  • Sugiura, K., Yamamoto, N., Takehisa, T., Miwa, M., Saito, T., Uchida, Y., and Onodera, T. An outbreak of low pathogenic avian influenza in quails in Japan. Vet Ital 45:481-489, 2009.
  • Sugiura, K., Yamamoto, M., Nishida, T., Tsukamoto, D., Saito, T., and Onodera, T. Recent outbreak of avian influenza in Japan. OIE Sci Rev 28(3):1005-1013, 2009.
  • Sugiura, K., Asai, T., Takagi, M., and Onodera, T. Control and monitoring of antimicrobal resistance in bacteria in food-producing animals in Japan. Vet Ital 45:305-315, 2009.
  • Kamakawa, H., Koiwai, M., Satomura, S., Sugiura, K. Assessing the risk of rabies entering Japan by the importation of dogs and cats from the United States, Epidemiol Infect 137:1149-1154, 2009.
  • Zahoor, M.A., Yamane, D., Mohamed, Y.M., Kobayashi, K., Kato, K., Tohya, Y. and Akashi, H. Characterization and application of monoclonal antibodies to bovine viral diarrhea virus nonstructural protein 5A. Arch Virol 154:1745-1754, 2009.
  • Morimoto, T., Arii, J., Tanaka, M., Sata, T., Akashi, H., Yamada, M., Nishiyama, Y., Uema M., Kawaguchi. Y. Differences in the Regulatory and Functional Effects of the Us3 Protein Kinase Activities of Herpes Simplex Virus 1 and 2. J Virol 83:11624-11634, 2009.
  • Sugi T, Kato K, Kobayashi K, Pandey K, Takemae H, Kurokawa H, Tohya Y, Akashi H. Molecular analyses of Toxoplasma gondii calmodulin-like domain protein kinase isoform 3. Parasitol Int 58:416-423, 2009.
  • Kato K, Sudo A, Kobayashi K, Sugi T, Tohya Y, Akashi H. Characterization of Plasmodium falciparum calcium-dependent protein kinase 4. Parasitol Int 58:394-400, 2009.
  • Yamane, D., Zahoor, M.A., Mohamed, Y.M., Azab, W., Kato, K., Tohya, Y. and Akashi, H. Activation of extracellular signal-regulated kinase in MDBK cells infected with bovine viral diarrhea virus. Arch Virol 154:1499-1503, 2009.
  • Watanabe, S., Ueda, N., Iha, K., Masangkay, JS., Fujii, H., Alviola, P., Mizutani, M., Maeda, K., Yamane, D., Walid, A., Kato, K., Kyuwa, S., Tohya, Y., Yoshikawa, Y., Akashi, H. Detection of a new bat gammaherpesvirus in the Philippines. Virus Gene 39:90-93, 2009.
  • Yamane, D., Zahoor, M.A., Mohamed, Y.M., Azab, W., Kato, K., Tohya, Y. and Akashi, H. Inhibition of sphingosine kinase by Bovine viral diarrhea virus NS3 is crucial for efficient viral replication and cytopathogenesis. J Biol Chem 284:13648-13659, 2009.
  • Arii, J., Kato, K., Kawaguchi, Y., Tohya, Y., Akashi, H. Analysis of herpesvirus host specificity determinants using herpesvirus genomes as bacterial artificial chromosomes. Microbiol Immunol 53:433-441, 2009.
  • Azab, W., Kato, K., Arii, J., Tsujimura, K., Yamane, D., Tohya, Y., Matsumura, T., Akashi, H. Cloning of the genome of equine herpesvirus type 4 Strain TH20p as an infectious bacterial artificial chromosome. Arch Virol 154:833-842, 2009.
  • Kobayashi K, Kato K, Sugi T, Yamane D, Shimojima M, Tohya Y, Akashi H. Application of retrovirus-mediated expression cloning for receptor screening of a parasite. Anal Biochem 389:80-82, 2009.
  • Yamane, D., Zahoor, M.A., Mohamed, Y.M., Kato, K., Tohya, Y. and Akashi, H. Microarray analysis reveals distinct signaling pathways transcriptionally activated by infection with bovine viral diarrhea virus in different cell types. Virus Res 142:188-199, 2009.
  • Arii, J., Uema, M., Morimoto, T., Sagara, H., Akashi, H., Ono, E., Arase H., Kawaguchi, Y. Entry of herpes simplex virus 1 and other alphaherpesviruses 1 via the paired immunoglobulin-like type 2 receptor α. J Virol 83:4520-4527, 2009.
  • Morimoto, T., Arii, J., Akashi, H., Kawaguchi, Y. Identification of multiple sites in herpes simplex virus genomes suitable for insertion of foreign genes. Microbiol Immunol 53:155-161, 2009.
  • Yamano, T., Eshita, Y., Kihara, Y., Satho, T., Kuroda, M., Sekizuka, T., Nishimura, M., Sakai, K., Watanabe, S., Akashi, H., Rongsriyam, Y., Komalamisra, N., Srisawat, R., Miyata, T., Sakata, A., Hosokawa, M., Nakashima, M., Kashige, N., Miake, F., Fukushi, S., Nakauchi, M., Saijo,M., Kurane, I., Morikawa, S., Mizutani, T. Novel virus discovery from field-collected mosquito larvae using an improved system for rapid determination of viral RNA sequences (RDV ver4.0). Arch Virol 154:153-158, 2009.
  • Kato, A., Arii, J., Shiratori, I., Akashi H., Arase, H., Kawaguchi, Y. Herpes simplex virus 1 protein kinase Us3 phosphorylates viral envelope glycoprotein B and regulates its expression on the cell surface. J Virol 83:250-261, 2009.
  • Sugiura, K., Yamamoto, M., Onodera, T., An outbreak of low pathogenic avian influenza in quails in Japan. Vet Ital 45: 481-489, 2009.
  • Fittipaldi, N., Sekizaki, T., Takamatsu, D., Dominguez-Punaro, M. C., Harel, J., Bui, N. K., Vollmer, W., and Gottschalk, M. Significant contribution of the pgdA gene to the virulence of 2 Streptococcus suis. Mol Microbiol 70:1120-1135, 2008.
  • Takamatsu, D., Hata, E., Osaki, M., Aso, H., Kobayashi, S., and Sekizaki, T. Role of SraP in adherence of Staphylococcus aureus to the bovine mammary epithelia. J Vet Med Sci 70:735-738, 2008.
  • Fittipaldi, N., Sekizaki, T., Takamatsu, D., Harel, J., Dominguez-Punaro, M. C., Von Aulock, S., Draing, C., Marois, C., Kobisch, M., and Gottschalk, M. D-alanylation of the lipoteichoic acid contributes to the virulence of Streptococcus suis. Infect Immun 76:3587-3594, 2008.
  • Takamatsu, D., Osaki, M., Tharavichitkul, P., Takai, S., and Sekizaki, T. Allelic variation and the prevalence of serum opacity factor among Streptococcus suis population. J Med Microbiol 57: 488-494, 2008.
  • Sekizaki, T., Nishiya, H., Nakajima, S., Nishizono, M., Kawano, M., Okura, M., Takamatsu, D., Nishino, H., Ishiji, T., and Osawa, R. Endocarditis in chickens caused by subclinical infection of Streptococcus gallolyticus subsp. gallolyticus. Avian Dis 52:183-186, 2008.
  • Vanier, G., Sekizaki, T., Dominguez-Punaro, M., Esgleas, M., Osaki, M., Takamatsu, D., Segura, M., and Gottschalk, M. Disruption of srtA gene in Streptococcus suis results in decreased interactions with endothelial cells and extracellular matrix proteins. Vet Microbiol 127:417-424, 2008.
  • Takamatsu, D., Wongsawan, K., Osaki, M., Nishino, H., Ishiji, T., Tharavichitkul, P.,
    Khantawa, B., Fongcom, A., Takai, S., and Sekizaki, T. Streptococcus suis in humans, Thailand. Emerg Infect Dis 14:181-183, 2008.
  • Kato K, Sudo A, Kobayashi K, Tohya Y, Akashi H. Characterization of Plasmodium falciparum protein kinase 2. Mol Biochem Parasitol 162:87-95, 2008.
  • Watanabe, S., Mizutani, T., Sakai, K., Kato, K., Tohya, Y., Fukushi, S., Saijo, M., Yoshikawa, Y., Kurane, I., Morikawa, S., Akashi, H. Ligation-mediated amplification for effective rapid determination of viral RNA sequences (RDV). J Clin Virol 43:56-59, 2008.
  • Sudo A, Kato K, Kobayashi K, Tohya Y, Akashi H. Susceptibility of Plasmodium falciparum cyclic AMP-dependent protein kinase and its mammalian homologue to the inhibitors. Mol Biochem Parasitol 160:138-142, 2008.
  • Zhang S, Ju Y, Jia L, Kumagai S, Li J, Manabe N. Establishment of an efficient enzyme-linked immunosorbent assay for the detection of Eperythrozoon sius antibody in swine. J Vet Med Sci 70(10):1143-1145, 2008.
  • Nagai, M., Hayashi, M., Itou, M., Fukutomi, T., Akashi, H., Kida, H. and Sakoda, Y. Identification of new genetic subtypes of bovine viral diarrhea virus genotype 1 isolated in Japan. Virus Genes 36:135-139, 2008.
  • Yamane, D., Kato, K., Tohya, Y. and Akashi, H. The relationship between the viral RNA level and upregulation of innate immunity in spleen of cattle persistently infected with bovine viral diarrhea virus. Vet Microbiol 129:69-79, 2008.

Papers written in Japanese

  • Hiroomi Akashi,
    Animal microbiology, co-editing, Asakura Publishing, 2008
  • Hiroomi Akashi,
    New Veterinary Medicine Dictionary, co-editing, Chikusan Publishing, 2008
  • Tsutomu Sekizaki,
    Chapter 9, Control of animal-derived infections and livestock products safety, Food in the World, food in Japan, (The Series, Agricultural Science in the 21st Century), (compiled by the Association of Japanese Agricultural Scientific Societies), pp. 151-166, Yokendo, 2010
  • Tsutomu Sekizaki,
    Stretococcus suis, Pathogenic bacteria lurked in animals, BMSA Journal, Vol. 2 (1): 7-12, 2010
  • Tsutomu Sekizaki,
    Pathogenic factors of Stretococcus suis and its strong virulent strain marker, Nisseiken Newsletter, 56(1): 5-12, 2010
  • Tsutomu Sekizaki,
    Stretococcus suis, pathogenic bacteria lurked in animal, Miyagi Veterinary Medical Association Journal, 62(4): 213-217, 2009
  • Tsutomu Sekizaki,
    Diversity of Stretococcus suis and analysis on its pathogenicity, ANTIBIOTICS & CHEMOTHERAPY, 25(11): 119-126, 2009
  • Tsutomu Sekizaki,
    Infectious diseases of Streptococcus suis, Sogo Rinsho, 57 (11): 2680-2685, 2008
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