Prevalence of Streptococcus suis Genotypes in Isolates from Porcine Endocarditis in East Japan

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  • ONISHI Hidetaka
    Fukushima Prefectural Kenchu Livestock Hygiene Service Center, 2 Mansuida, Koriyama, Fukushima 963–8041, Japan
  • SUGAWARA Masaru
    Iwate Prefecture Northern Regional Livestock Hygiene Service Center, 23–9–1 Yamauchi, Karumai, Iwate 028–6222, Japan
  • OKURA Masatoshi
    Bacterial and Parasitic Disease Research Division, National Institute of Animal Health, National Agriculture and Food Research Organization, 3–1–5 Kannondai, Tsukuba, Ibaraki 305–0856, Japan
  • OSAKI Makoto
    Agriculture, Forestry and Fisheries Research Council Secretariat, Ministry of Agriculture, Forestry and Fisheries, 1–2–1 Kasumigaseki, Chiyoda-ku, Tokyo 100–8950, Japan
  • TAKAMATSU Daisuke
    The United Graduate School of Veterinary Sciences, Gifu University, 1–1 Yanagido, Gifu 501–1193, Japan Bacterial and Parasitic Disease Research Division, National Institute of Animal Health, National Agriculture and Food Research Organization, 3–1–5 Kannondai, Tsukuba, Ibaraki 305–0856, Japan

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タイトル別名
  • Prevalence of <i>Streptococcus suis</i> Genotypes in Isolates from Porcine Endocarditis in East Japan
  • Prevalence of <italic>Streptococcus suis</italic> genotypes in isolates from porcine endocarditis in East Japan

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抄録

Streptococcus suis is an important pathogen for both swine and humans. In this study, we genotyped 105 S. suis isolates from porcine endocarditis in East Japan on the basis of profiles of capsular serotype-specific, virulence-associated and pilus-associated genes. The most common genotype was cps2J/mrp+/epf-/sly-/sbp2-/sep1-/sgp1+ (76.19%), followed by nt(non-typeable)/mrp+/epf-/sly-/sbp2-/sep1-/sgp1+ (7.62%) and cps2J/mrp+/epf+/sly+/sbp2+/sep1-/sgp1- (7.62%). The representative isolates of mrp+/epf-/sly-/sbp2-/sep1-/sgp1+ were classified into ST28 complex, a clonal complex previously referred to as ST27 complex, whereas those of mrp+/epf+/sly+/sbp2+/sep1-/sgp1- were classified into ST1 complex by multilocus sequence typing. Because the majority of human clinical isolates were assigned to ST1 and ST28 complexes, most isolates from porcine endocarditis investigated in this study may have the potential to cause S. suis infection in humans.

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