AUTHOR=Rajpara Neha , Kutar Braj M. R. N. S. , Sinha Ritam , Nag Dhrubajyoti , Koley Hemanta , Ramamurthy Thandavarayan , Bhardwaj Ashima K. 

TITLE=Role of integrons, plasmids and SXT elements in multidrug resistance of Vibrio cholerae and Providencia vermicola obtained from a clinical isolate of diarrhea

JOURNAL=Frontiers in Microbiology

VOLUME=6

YEAR=2015

URL=https://www.frontiersin.org/journals/microbiology/articles/10.3389/fmicb.2015.00057

DOI=10.3389/fmicb.2015.00057

ISSN=1664-302X

ABSTRACT=<p>The isolates of <italic>Vibrio cholerae</italic> and <italic>Providencia vermicola</italic> obtained from a diarrheal patient were investigated for genetic elements governing their drug resistance phenotypes. Out of 14 antibiotics tested, <italic>V. cholerae</italic> Vc IDH02365 isolate showed resistance to nine antibiotics, while <italic>P. vermicola</italic> Pv NBA2365 was found to be resistant to all the antibiotics except polymyxin B. Though SXT integrase was depicted in both the bacteria, class 1 integron was found to be associated only with Pv NBA2365. Integrons in Pv NBA2365 conferred resistance to β-lactams, aminoglycosides, and trimethoprim. Pv NBA2365 carried two transformable plasmids imparting distinct antibiotic resistance traits to their <italic>Escherichia coli</italic> transformants. In rabbit ileal loop assays, Pv NBA2365 did not show any fluid accumulation (FA) in contrast with Vc IDH02365 that showed high FA. To the best of our knowledge, this is the first report of a highly drug resistant <italic>P. vermicola</italic> and additionally co-existence of multidrug resistant <italic>V. cholerae</italic> and <italic>P. vermicola</italic>. Both the microbes appeared to possess a wide array of mobile genetic elements for a large spectrum of antimicrobial agents, some of which are being used in the treatment of acute diarrhea.</p>