Discussion
RND efflux pump AdeABC-RS system plays a significant role in emerging multi drug resistant A. baumannii. Mutation in AdeS gene deciphers the role of regulatory gene. Hence, antimicrobial stewardship should be strictly followed and efflux pump inhibiting substances should be vigorously searched to bring back the era of existing antibiotics.
Methods
The purpose of this study is to find the genotypic association in drug-resistant A. baumannii isolated from different sterile body fluids. Matrix-assisted laser desorption/ionization-time of flight confirmed A. baumannii isolates were taken and minimum inhibitory concentration (MIC) was determined by VITEK-2 AST system. The presence of resistance nodulation-division (RND)-efflux pump genes AdeABC-RS was detected by multiplex polymerase chain reaction.
Results
Of the total 40 A. baumannii, 32 (80%) were multidrug resistant though all isolates were susceptible to Tigecycline. Similarly, 26 (81.25%) isolates were positive for RND-efflux pump genes AdeABC-RS.