Abstract:
PURPOSE: A method for quickly and accurately detecting extended-spectrum beta-lactamase by broth microdilution is provided. CONSTITUTION: A strain which produces extended spectrum beta-lactamase by broth microdilution is detected using: a combination of cefotaxime-PABL inhibitor broth and cefotaxim-ESBL inhibitor-PABL inhibitor broth; a combination of ceftazidime-PABL inhibitor broth and ceftazidime-ESBL inhibitor-PABL inhibitor broth; a combination of cefepime-PABL inhibitor broth and cefepime-ESBL inhibitor-PABL inhibitor broth; a combination of ceftriaxone-PABL inhibitor broth and ceftriaxone-ESBL inhibitor-PABL inhibitor broth; or a combination of ceftriaxone-PABL inhibitor broth and ceftriaxone-ESBL inhibitor-PABL inhibitor broth. The PABL inbibitor is boronic acid or cloxacilin containign phenylboronic acid and 3-aminophenyl boronic acid.