Ahirrao VK, Jadhav RA, Vaidya SN, Bhagwat SS, Yeole RD, Patel MV. Ensuring Robustness in Quality of Antibiotic Susceptibility Test Discs for Four Novel Antibiotics.
Biomed Chromatogr 2022;
36:e5354. [PMID:
35141944 DOI:
10.1002/bmc.5354]
[Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2021] [Revised: 01/10/2022] [Accepted: 02/07/2022] [Indexed: 11/10/2022]
Abstract
Antibiotic susceptibility test (AST) discs are used as in-vitro diagnostic tool to select appropriate antibiotic to treat the infection. Generally, the concentration of drug loaded on to the AST discs is measured by conducting their activity against quality control organisms. This methodology has several limitations such as it is time consuming, requires trained manpower, wider acceptance criteria of zone of inhibitions causing ambiguity in judging the small variations in the drug concentration etc. To overcome these issues we have developed and validated high performance liquid chromatographic (HPLC) methods for determination of strength of AST discs for in-house researched antibiotics namely Levonadifloxacin/WCK 771, Nafithromycin/WCK 4873, Cefepime-Tazobactam/WCK 4282 and Cefepime-Zidebactam/WCK 5222. The drug was extracted from the AST discs using appropriate solvent. The developed methods are simple, accurate, precise, reproducible, rugged and robust. The developed methods are efficient in terms of time and can be very well conducted in quality control laboratory during release as well as stability evaluation of AST disc. Application of HPLC methods for determination of strength of AST disc ensure undoubted quality and indirectly better selection of drug to treat bacterial infections in clinics.
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