首页 | 本学科首页   官方微博 | 高级检索  
   检索      


Co-detection of Helicobacter pylori and of its resistance to clarithromycin by PCR
Authors:E Sevin  D Lamarque  JC Delchier  CJ Soussy  J Tankovic
Institution:Service de Bactériologie-Virologie-Hygiène, Hôpital Henri Mondor, Créteil, France;Service d'Hépato-Gastro-Entérologie, Hôpital Henri Mondor, Créteil, France
Abstract:Our aim was to develop a rapid molecular test based on polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) and making it possible to detect Helicobacter pylori directly from gastric biopsy samples, and to test its susceptibility to clarithromycin. A 629-bp fragment of the 23S rRNA gene of H. pylori was amplified by PCR and the mutations responsible for clarithromycin resistance were detected with BsaI and BbsI restriction endonucleases. Thirty-five gastric samples were tested in parallel by standard microbiologic methods (culture and clarithromycin susceptibility testing with E-test strips) and by PCR-RFLP. The 10 culture-negative samples were also PCR-negative. Sixteen out of the 25 culture-positive samples (64%) were PCR-positive. RFLP analysis could be done in 12 cases and the results were in agreement with those of the E-test: susceptibility in five cases, resistance in seven (six A2144G mutations and one A2143G mutation).
Keywords:Helicobacter pylori            Antibiotic resistance  Macrolide antibiotic  23S rRNA mutation  Polymerase chain reaction
本文献已被 ScienceDirect 等数据库收录!
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号