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2006 Fiscal Year Annual Research Report

ウイルス感染症の診断法の開発、分子疫学、病態とリスク評価の研究

Research Project

Project/Area Number 18390297
Research InstitutionThe University of Tokyo

Principal Investigator

牛島 廣治  東京大学, 大学院医学系研究科, 教授 (10091068)

Co-Investigator(Kenkyū-buntansha) 阿部 賢治  国立感染症研究所, 感染病理部, 主任研究官(研究職) (60130415)
Keywordsウイルス性下痢症 / ノロウイルス / ロタウイルス / イムノクロマトグラフィー / LAMP法 / RT-PCR法
Research Abstract

1.ノロウイルス検出を迅速に行うイムノクロマトグラフィーの開発を行った。頻度の高いGII/4とGII/3を検出できるmonoclonal抗体を用いて臨床応用に向け基礎的検討をおこなった。日本の検体を用いた市販ELISA法との比較結果はRT-PCR法を基準として感度、特異度、一致率がそれぞれ78.9%(ELISA:90.4%)、96.4%(同:96.4%)、92.4%(同:95.0%)であった。一方、GI/1、GI/11、GII/2、GII/3、GII/4、GII/5、GII/6に対する各polyclonal抗体を使用したより広範なgenotypeに対応できるICを開発中である。こちらは多種のVLPへの反応を確認し、臨床検体への応用を準備中である。
2.RT-PCR法よりも手軽で、迅速なノロウイルス核酸検出法であるLAMP法をRT-PCR法と比較した。GIIに対しては非常に高い感度と特異度を示した。GIについてはprimerの設計に改良が必要と思われる。
3.2004〜2005年度も日本の乳幼児ウイルス性下痢症起因ウイルスを調べ、過去の結果と比較した。前年度まではロタウイルスの頻度が最も高く、次がノロウイルスであったが、この年度はノロウイルスの頻度がロタウイルスを凌駕した。ロタウイルスのG血清型はG1が落ち込み、G3が急上昇した。G3の遺伝的多様性が認められた。ノロウイルスはGII/4が最頻出genotypeであったが新しいrecombinant株の出現が見られた。サポウイルス、C群ロタウイルス、アデノウイルスによる集団感染が観察された。
4.ノロウイルスのgenogroupを越えて反応するmonoclonal抗体のepitope解析より、この抗体が立体構造に反応する抗体で今まで報告されていないepitopeを認識し、genus-specificな抗体である可能性を示した。

  • Research Products

    (28 results)

All 2007 2006

All Journal Article (27 results) Book (1 results)

  • [Journal Article] Genetic characterization of group A rotavirus strains circulating among children with acute gastroenteritis in Japan in 2004-20052007

    • Author(s)
      Phan TG, et al.
    • Journal Title

      Infection, Genetics and Evolution 7

      Pages: 247-253

  • [Journal Article] Emergence of new variant rotavirus G3 among infants and children with acute gastroenteritis in Japan during 2003-20042007

    • Author(s)
      Phan TG, et al.
    • Journal Title

      Clin Lab 53

      Pages: 41-48

  • [Journal Article] Identification of IgA against coronavirus in breast milk2007

    • Author(s)
      Terao Y, et al.
    • Journal Title

      Clin Lab (In Press)

  • [Journal Article] An outvreak of adenovirus serotype 41 infection in infants and children with acute gastroenteritis in Maizuru city, Japan2007

    • Author(s)
      Shimizu H, et al.
    • Journal Title

      Infect, Genet and Evol 7

      Pages: 279-284

  • [Journal Article] Emergence of rare sapovirus genotype among infants and children with acute gastroenteritis in Japan2007

    • Author(s)
      Phan TG, et al.
    • Journal Title

      Eur J Clin Microgiol & Infect diseases 26(1)

      Pages: 21-27

  • [Journal Article] Genomic analyses of diverse rubell virus genotypes2007

    • Author(s)
      Zhou Y, et al.
    • Journal Title

      J Gen Virol 88

      Pages: 932-941

  • [Journal Article] Norvel porcine rotavirus of the genotype P[27] shares new phylogenetic lineage with G2 porcine rotavirus strain2007

    • Author(s)
      Khamrin P, et al.
    • Journal Title

      Virology

      Pages: E-pub

  • [Journal Article] First detection of IgA against Norovirus in breast milk2007

    • Author(s)
      Makita K, et al.
    • Journal Title

      Clin. Lab (In Press)

  • [Journal Article] Diversity of viruses associated with acute gastroenteritis in children hospitalized with diarrhea in Ho Chi Minh city, Vietnam2007

    • Author(s)
      Nguyen TA, et al.
    • Journal Title

      J Med Virol 79(5)

      Pages: 582-590

  • [Journal Article] Amino acid substitution in VP7 sequences of human rotavirus G1 isolated in Japan, China, Thailand, and Vietnam in 2002-20032007

    • Author(s)
      Trinh QT, et al.
    • Journal Title

      J Med Virol (In Press)

  • [Journal Article] Prevalence of sapovirus in fection among infants and children with acute gastroenteritis in Dhaka City, Bangladesh during 2004-20052007

    • Author(s)
      Dey SK, et al.
    • Journal Title

      J Med Virol (In press)

  • [Journal Article] Molecular characterization of rare G3P[9] rotavirus strains isolated from children hospitalized with acute gastroenteritis2007

    • Author(s)
      Khamrin P
    • Journal Title

      J Med Virol (In press)

  • [Journal Article] Detection and genetic characterization of group A rotavirus strains circulating among children with acute gastroenteritis in Japan2007

    • Author(s)
      Phan TG, et al.
    • Journal Title

      J Virol (In press)

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

    • Author(s)
      Phan TG, et al.
    • Journal Title

      Infection, Genetics and Evolution (In press)

  • [Journal Article] A novel G5P[6] rotavirus in human : it is true?2007

    • Author(s)
      Phan TG, et al.
    • Journal Title

      J Clinical Microbiol (In press)

  • [Journal Article] Changing Distribution of Norovirus Genotypes and Genetic Characterization of Recombinant GIIb among Infants and Children with Diarrhea in Japan2006

    • Author(s)
      Phan TG, et al.
    • Journal Title

      J Med Virol 78(7)

      Pages: 971-978

  • [Journal Article] Viral gastroenteritis and Genetic Characterization of Recombinant Norovirus among Infants and Children with Diarrhea in Eastern Russia2006

    • Author(s)
      Phan TG, et al.
    • Journal Title

      Clin Lab 52(5-6)

      Pages: 247-253

  • [Journal Article] Novel Recombinant Norovirus in China2006

    • Author(s)
      Phan TG, et al.
    • Journal Title

      Emerg Infect Dis. 12(5)

      Pages: 857-858

  • [Journal Article] Identification of Novel Recombinant Sapovirus in Japan2006

    • Author(s)
      Phan TG, et al.
    • Journal Title

      Emerg Infect Dis. 12(5)

      Pages: 865-867

  • [Journal Article] Molecular characterization of a rare G3P[3] human rotavirus reassortant strain reveals an evidence for human-animals multip interspecies transmissions2006

    • Author(s)
      Khamrin P, et al.
    • Journal Title

      J Med Virol 78(7)

      Pages: 986-994

  • [Journal Article] Outbreak of sapovirus infection among infants and children with acute gastroenteritis in Osaka City, Japan during during 2004-20052006

    • Author(s)
      Phan TG. et al.
    • Journal Title

      J Med Virol 78(6)

      Pages: 839-846

  • [Journal Article] Existence of multiple genotypes associated with acute gastroenteritic during 6-year survey of norovirus infection in Japan2006

    • Author(s)
      Okame M, et al.
    • Journal Title

      J Med Virol 78(10)

      Pages: 1318-1324

  • [Journal Article] Human adenovirus type 1 related to feline adenovirus : evidence of interspecies transmission2006

    • Author(s)
      Phan TG, et al.
    • Journal Title

      Clin Lab 52(9-10)

      Pages: 515-518

  • [Journal Article] Detection and genetic characterization of norovirus strains circulating among infants and children with acute gastroenteritis in Japan during 2004-20052006

    • Author(s)
      Phan TG, et al.
    • Journal Title

      Clin Lab 52(9-10)

      Pages: 519-525

  • [Journal Article] Novel intragenotype recombination in sapovirus2006

    • Author(s)
      Phan TG, et al.
    • Journal Title

      Clin Lab 52(7-8)

      Pages: 363-366

  • [Journal Article] Detecition of norovirus antigens from recombinant virus-like particles and stool samples by a commercial norovirus enzyme-linked immunosorbent assay2006

    • Author(s)
      Okitsu-Negishi S, et al.
    • Journal Title

      J Clin Microbiol 44(10)

      Pages: 3784-3786

  • [Journal Article] Detection of rare G3P[19] porcine rotavirus strains in Chiang Mai, Thailand provides evidence for the origin of VP4 genes of Mc323 and Mc345 human rotaviruses2006

    • Author(s)
      Maneekarn N, et al.
    • Journal Title

      J Clin Microbiol 44

      Pages: 4113-4119

  • [Book] パワーアップ問題演習 微生物学2006

    • Author(s)
      監修 牛島廣治, 著者 西條政幸
    • Total Pages
      248
    • Publisher
      医学芸術社

URL: 

Published: 2008-05-08   Modified: 2016-04-21  

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