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2007 Fiscal Year Annual Research Report

ウイルス性胃腸炎の疫学、治療、予防に関する研究-ノロウイルスとE型肝炎ウイルス

Research Project

Project/Area Number 19604001
Research InstitutionAinogakuin College

Principal Investigator

沖津 祥子  Ainogakuin College, 第一看護学科, 講師 (10082215)

Keywordsウイルス / 感染症 / 環境 / 食品 / 抗体
Research Abstract

1.国内産および中国産の生ガキ(加熱調理用)からノロウイルス(NoV)検出を行った。ともに6.7%で陽性となり、そのウイルスの配列は、近年の流行株と99%一致した。
2.アジア各国の乳幼児下痢症患児検体についてNoVの分子疫学を行った。タイ・チェンマイの2002-2004年のNoVはGII/4が最頻出株であった。ベトナム・ホーチミン市における2002-2003年の解析では、NoV GIIがA群ロタウイルス続いて多く5.5%であった。2005-2006年のNoVとして世界中で流行した2006a、2006bというGII/4の組換え株が検出された。スリランカではNoV GIIを8%の検体から検出した。この国でのNoV検出は初の報告である。今回の検体は流行株のGII/3、GII/4が半数以上であったが、GII/9やGII/16などの珍しい遺伝子型も検出された。日本の2005〜2006年ではNoV(8.5%)の最頻出遺伝子型はGII/3で、GII/4と合わせて90%となった。GII/3のvariantが最頻出株であった。2006〜2007年(総検体数628)にはNoVは14.4%で検出された。
3.ヒトに感染するNoVの多くの遺伝子型と反応するモノクローナル抗体を作製し、そのエピトープを決定した。カプシドのP1領域の立体構造に反応する抗体で、初の報告である。
4.NoVの最頻出遺伝子型(GII/3と4)を迅速に検出可能なイムノクロマトキット(IC)の評価を臨床検体にて行った。RT-PCR法と比較すると、感度74〜79%、精度96〜100%、一致率92〜95%で、他社IC製品とほぼ同様であった。さらにGIを含めた多くのNoVを検出できる系を開発中である。
5.タイ・チェンマイ近郊の農揚からブタの血清を採取し、抗E型肝炎ウイルス抗体価測定を試みた。週齢とともに保有率が上がることが確認された。

  • Research Products

    (35 results)

All 2008 2007

All Journal Article (25 results) (of which Peer Reviewed: 25 results) Presentation (10 results)

  • [Journal Article] Development of a rapid immunochromatographic test for noroviruses genogroup I and II2008

    • Author(s)
      Takanashi S
    • Journal Title

      J Virol Methods 148

      Pages: 1-8

    • Peer Reviewed
  • [Journal Article] Use of sequence analysis of the VP4 gene to classify recent Vietnamese rotavirus isolates2008

    • Author(s)
      Nguyen TA
    • Journal Title

      Clinc Microbiol Infect 14

      Pages: 235-241

    • Peer Reviewed
  • [Journal Article] Novel nonstructural protein 4 genetic group in rotavirus of porcine origin2008

    • Author(s)
      Khamrin P
    • Journal Title

      Emerg Infect Dis 14

      Pages: 686-688

    • Peer Reviewed
  • [Journal Article] Norovirus and sapovirus infections among children with acute gastroent eritis in Ho Chi Minh City during 2005-20062008

    • Author(s)
      Nguyen TA
    • Journal Title

      J Tropical Pediatr

    • Peer Reviewed
  • [Journal Article] Detection of Bovine Kobuviruses in Thailand2008

    • Author(s)
      Khamrin P
    • Journal Title

      Emerg Infect Dis

    • Peer Reviewed
  • [Journal Article] Sequence analysis of the capsid gene of Aichi viruses detected from Japanm Bangladesh,Thailand,and Vietnam2008

    • Author(s)
      Pham NTK
    • Journal Title

      J Med Virol

    • Peer Reviewed
  • [Journal Article] Possible misidentification of G5P[6] rotavirus as a novel strain detected in humans for the first time2007

    • Author(s)
      Phan TG
    • Journal Title

      J Clin Microbiol 45

      Pages: 2098-2099

    • Peer Reviewed
  • [Journal Article] Emergence of Intragenotype Recombinant Sapovirus in Japan2007

    • Author(s)
      Phan TG
    • Journal Title

      Infect Genet Evol 7

      Pages: 542-546

    • Peer Reviewed
  • [Journal Article] Anti-norovirus polyclonal antibody and its potential for development of an antigen-ELISA2007

    • Author(s)
      Okame M
    • Journal Title

      J Med Virol 79

      Pages: 1180-1186

    • Peer Reviewed
  • [Journal Article] Genetic heterogeneity,evolution and recombination in norovirus2007

    • Author(s)
      Phan TG
    • Journal Title

      J Med Virol 79

      Pages: 1388-1400

    • Peer Reviewed
  • [Journal Article] Isolation and molecular characterization of Aichi viruses from fecal specimens collected in Japan,Bangladesh,Thailand and Vietnam2007

    • Author(s)
      Pham NT
    • Journal Title

      J Clin Microbiol 45

      Pages: 2287-2288

    • Peer Reviewed
  • [Journal Article] Amino acid substitutions in the VP7 protein of human rotavirus G3 isolated in China,Russia,Thailand,and Vietnam during 2001-20042007

    • Author(s)
      Trinh QD
    • Journal Title

      J Med Virol 79

      Pages: 1611-1616

    • Peer Reviewed
  • [Journal Article] Detection and genetic characterization of Norovirus in oyster from China and Japan2007

    • Author(s)
      Phan TG
    • Journal Title

      Clin Lab 53

      Pages: 405-412

    • Peer Reviewed
  • [Journal Article] Photocatalytic inactivation of diarrheal viruses by visible-light-catalytic titanium dioxide2007

    • Author(s)
      Sang XJ
    • Journal Title

      Clin Lab 53

      Pages: 413-421

    • Peer Reviewed
  • [Journal Article] Evidence of intragenic recombination in G1 rotavirus VP7 genes2007

    • Author(s)
      Phan TG
    • Journal Title

      J Virol 81

      Pages: 10188-10194

    • Peer Reviewed
  • [Journal Article] Genetic heterogeneity,evolution and recombination in emerging G9 rotaviruses2007

    • Author(s)
      Phan TG
    • Journal Title

      Infect Genet Evol 7

      Pages: 656-663

    • Peer Reviewed
  • [Journal Article] Evaluation of immunochromatography test for detection of rotaviorus and norovirus among Vietnamese children with acute gastroenteritis and the emergence of a novel norovirus GII.4 vaiant2007

    • Author(s)
      Nguyen TA
    • Journal Title

      J Tropical Pediatrics 53

      Pages: 264-269

    • Peer Reviewed
  • [Journal Article] Changing pattern of rotavirus G genotype distribution in Chiang Mai,Thailand from 2002 to 2004:Decline of G9 and reemergence of G1 and G22007

    • Author(s)
      Khamrin P
    • Journal Title

      J Med Virol 79

      Pages: 1775-1782

    • Peer Reviewed
  • [Journal Article] Molecular and epidemiological trend of norovirus associated gastroenteritis in Dhaka City,Bangladesh2007

    • Author(s)
      Dey SK
    • Journal Title

      J Clin Virol 40

      Pages: 218-223

    • Peer Reviewed
  • [Journal Article] Genetic diversity of noroviruses and sapoviruses in children hospitalized with acute gastroenteritis in Chang Mai,Thailand2007

    • Author(s)
      Khamrin P
    • Journal Title

      J Med Virol 79

      Pages: 1921-1926

    • Peer Reviewed
  • [Journal Article] Sequence analysis of Vietnamese P[6] rotavirus strains suggests evidence of interspecies transmission2007

    • Author(s)
      Nguyen TA
    • Journal Title

      J Med Virol 79

      Pages: 1959-1965

    • Peer Reviewed
  • [Journal Article] Multiple recombonant noroviruses in Japan2007

    • Author(s)
      Phan TG
    • Journal Title

      Clin Lab 53

      Pages: 567-570

    • Peer Reviewed
  • [Journal Article] Identification of human astrovirus infections among children with-acute gastroenteritis in the Southern Part of Vietnam during 2005-20062007

    • Author(s)
      Nguyen TA
    • Journal Title

      J Med Virol 80

      Pages: 298-305

    • Peer Reviewed
  • [Journal Article] Evaluation of immunochromatography and commercial enzyme-linked immunosorbent assay for rapid detection of norovirus antigen in stool samples2007

    • Author(s)
      Khamrin P
    • Journal Title

      J Virol Methods 147

      Pages: 360-363

    • Peer Reviewed
  • [Journal Article] Characterization of broad reactive monoclonal antibody against norovirus genogroup I and II:Recognition of a novel conformational epitope2007

    • Author(s)
      Shiota T
    • Journal Title

      J Virol 81

      Pages: 12298-12306

    • Peer Reviewed
  • [Presentation] Evaluation of the immunochromatography test for rapid detection of norovirus antigen in stool samples2008

    • Author(s)
      Nguyen TA
    • Organizer
      第4回日本小児消化管感染症研究会
    • Place of Presentation
      東京
    • Year and Date
      2008-02-16
  • [Presentation] Molecular epidemiology of Norovirus and sapovirus infection in Asia2007

    • Author(s)
      Ushijima H
    • Organizer
      Third International Calicivirus Conference
    • Place of Presentation
      Cancun,Mexico
    • Year and Date
      20071110-13
  • [Presentation] Evaluation of the immunochromatography test for rapid detection of Norovirus antigen in stool samples2007

    • Author(s)
      Khamrin P
    • Organizer
      Third International Calicivirus Conference
    • Place of Presentation
      Cancun,Mexico
    • Year and Date
      20071110-13
  • [Presentation] Characterization of newly identified monoclonal antibody reacted with norovirus GI and GII:Recognition of novel conformational epitope2007

    • Author(s)
      Okitsu-Negishi S
    • Organizer
      Third International Calicivirus Conference
    • Place of Presentation
      Cancun,Mexico
    • Year and Date
      20071110-13
  • [Presentation] スリランカ・ペラデニヤ大学病院における小児ウイルス性胃腸炎の分子疫学的検討2007

    • Author(s)
      高梨 さやか
    • Organizer
      第39回日本小児感染症学会学術集会
    • Place of Presentation
      横浜
    • Year and Date
      20071109-11
  • [Presentation] Molecular epidemiology of adenovirus infection of among hospitalized infants and children with acute gastroenteritis in Dhaka City,Bangradesh2007

    • Author(s)
      Dey SK
    • Organizer
      第55回日本ウイルス学会学術集会
    • Place of Presentation
      札幌
    • Year and Date
      20071021-23
  • [Presentation] Isolation and molecular characterization of Aichi viruses from fecal specimens collected in Japan,Bangladesh,Thailand and Vietnam2007

    • Author(s)
      ファム・ニヤン
    • Organizer
      第55回日本ウイルス学会学術集会
    • Place of Presentation
      札幌
    • Year and Date
      20071021-23
  • [Presentation] Detection and molecular characterization of bovine kobuviruses from diarrheic cattle2007

    • Author(s)
      カムリン・パタラ
    • Organizer
      第55回日本ウイルス学会学術集会
    • Place of Presentation
      札幌
    • Year and Date
      20071021-23
  • [Presentation] 母乳中の風疹IgA抗体量と褥婦の予防接種・罹患率に関する研究<第2報>2007

    • Author(s)
      早川 有子
    • Organizer
      第22回日本母乳哺育学会学術集会
    • Place of Presentation
      浜松
    • Year and Date
      20070929-30
  • [Presentation] Genetic diversity of Norovirus infection in Japan,2002-2007.2007

    • Author(s)
      Phan TG
    • Organizer
      第48回日本臨床ウイルス学会
    • Place of Presentation
      富山
    • Year and Date
      20070602-03

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Published: 2010-02-04   Modified: 2016-04-21  

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