• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Survey of chronological changes of azithromycin resistance and analyses of azithromycin resistance mechanisms in clinical strains of Neisserira gonorrhoeae

Research Project

Project/Area Number 22591788
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Urology
Research InstitutionGifu University

Principal Investigator

DEGUCHI Takashi  岐阜大学, 大学院・医学系研究科, 教授 (40163935)

Co-Investigator(Kenkyū-buntansha) 安田 満  岐阜大学, 医学部附属病院, 講師 (90311703)
中根 慶太  岐阜大学, 医学部附属病院, 医員 (00566482)
Project Period (FY) 2010 – 2012
Project Status Completed (Fiscal Year 2012)
Budget Amount *help
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2012: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2011: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2010: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Keywords感染症学 / 性感染症 / 淋菌 / アジスロマイシン / 薬剤耐性 / 23S rRNA / 23SrRNA
Research Abstract

Clinical strains of Neisseria gonorrhoeae isolated in 2010, 2011 and 2012 were examined for antimicrobial susceptibility to azithromycin. The MIC50 and MIC90, which were defined as minimum concentrations inhibiting the growth of 50% and 90% of the isolates, were 0.25 μg/ml and 0.5 μg/ml, 0.5 μg/ml and 1 μg/ml, and 0.25 μg/ml and 1 μg/ml for the isolates in 2010, 2011, and 2012, respectively. The 23S rRNA genes in the strains were examined for the presence of azxithromycin resistance-associated mutations. Our current study demonstrated that some clinical strains with intermediate resistance to azithromycin have emerged in Japan and that the resistance was associated with the mutation in the 23S rRNA gene.

Report

(4 results)
  • 2012 Annual Research Report   Final Research Report ( PDF )
  • 2011 Annual Research Report
  • 2010 Annual Research Report
  • Research Products

    (12 results)

All 2013 2012 2011 2010

All Journal Article (8 results) (of which Peer Reviewed: 7 results) Presentation (4 results) (of which Invited: 1 results)

  • [Journal Article] Analysis of the quinolone-resistance determining region of the gyrA gene and the analogous region of the parC gene in Ureaplasma parvum and Ureaplasma urealyticum detected in first-void urine of men with non-gonococcal urethritis2013

    • Author(s)
      Kamiya Y
    • Journal Title

      Journal of Antimicrobial Chemotherapy

      Volume: 68 Issue: 2 Pages: 480-482

    • DOI

      10.1093/jac/dks417

    • Related Report
      2012 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Contribution of Topoisomerase IV Mutation to Quinolone Resistance in Mycoplasma genitalium2013

    • Author(s)
      Yamaguchi Y
    • Journal Title

      Antimicrobial Agents and Chemotherapy

      Volume: 57 Issue: 4 Pages: 1772-1776

    • DOI

      10.1128/aac.01956-12

    • Related Report
      2012 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Management of pharyngeal gonorrhea is crucial to prevent the emergence and spread of antibiotic-resistant Neisseria gonorrhoeae.2012

    • Author(s)
      Deguchi T
    • Journal Title

      Antimicrobila Agents and Chemotherapy

      Volume: 56 Issue: 7 Pages: 4039-4040

    • DOI

      10.1128/aac.00505-12

    • Related Report
      2012 Annual Research Report
    • Peer Reviewed
  • [Journal Article] 男子尿道炎の新たな起炎菌と新たな耐性菌2012

    • Author(s)
      出口 隆
    • Journal Title

      泌尿器外科

      Volume: 25

    • Related Report
      2012 Annual Research Report
  • [Journal Article] Antimicrobial chemotherapy of Mycoplasma genitalium-positive non-gonococcal urethritis2012

    • Author(s)
      Deguchi T
    • Journal Title

      Expert Review of Anti-Infective Therapy

      Volume: 10 Issue: 7 Pages: 791-803

    • DOI

      10.1586/eri.12.38

    • Related Report
      2012 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Macrolide resistance-associated 23S rRNA mutation in Mycoplasma genitalium, Japan2011

    • Author(s)
      Shimada Y, Deguchi T, Nakane K, Yasuda M, Yokoi S, Ito S, Nakano M, Ito S, Ishiko H
    • Journal Title

      Emerging Infectious Diseases

      Volume: 17 Pages: 1148-1150

    • Related Report
      2011 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Selection of Mycoplasma genitalium strains harbouring macrolide resistance-associated 23S rRNA mutations by treatment with a single 1 g dose of azithromycin2011

    • Author(s)
      Ito S, Shimada Y, Yamaguchi Y, Yasuda M, Yokoi S, Ito S, Nakano M, Ishiko H, Deguchi T
    • Journal Title

      Sexually Transmitted Infections

      Volume: 87 Pages: 412-414

    • Related Report
      2011 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Emergence and spread of drug resistant Neisseria gonorrhoeae2010

    • Author(s)
      Deguchi T, Nakane, K, Yasuda M, Maeda S-I
    • Journal Title

      Journal of Urology

      Volume: 184 Pages: 851-858

    • Related Report
      2010 Annual Research Report
    • Peer Reviewed
  • [Presentation] 男子淋菌性尿道炎由来淋菌の薬剤感受性の年次推移について2012

    • Author(s)
      安田 満
    • Organizer
      第60回日本化学療法学会学術総会
    • Place of Presentation
      長崎ブリックホール,長崎
    • Related Report
      2012 Annual Research Report
  • [Presentation] 男子尿道炎2012

    • Author(s)
      出口 隆
    • Organizer
      第60回日本化学療法学会学術総会
    • Place of Presentation
      長崎ブリックホール、長崎
    • Related Report
      2012 Annual Research Report
    • Invited
  • [Presentation] 淋菌性尿道炎のChlamydia trachomatis、Mycoplasma genitalium重複感染率とセフトリアキソンまたはアジスロマイアシン投与後の後淋菌性尿道炎発症率に関する検討2012

    • Author(s)
      伊藤 晋
    • Organizer
      日本性感染症学会 第25回学術大会
    • Place of Presentation
      都市センターホテル、東京
    • Related Report
      2012 Annual Research Report
  • [Presentation] 泌尿器科感染症について再考する 抗菌薬側の要因から再考する 操薬2012

    • Author(s)
      安田 満
    • Organizer
      第100回日本泌尿器科学会総会
    • Place of Presentation
      パシフィコ横浜、横浜
    • Related Report
      2012 Annual Research Report

URL: 

Published: 2010-08-23   Modified: 2019-07-29  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi