Prevalence of class 1, 2 and 3 integrons among multidrug-resistant in Yazd, Iran.

BACKGROUND AND OBJECTIVES

Antibiotic resistance in is an increasing health problem. Integrons are associated with a variety of gene cassettes, which confer resistance to multiple classes of antibiotics. This study aimed at screening the presence of class 1, 2 and 3 integrons in in Yazd, Iran.

MATERIALS AND METHODS

This study was carried out on strains from March 2016 to March 2017. Clinical specimens were initially identified by the standard biochemical methods and their resistance patterns to antibiotics were studied using the disc diffusion method. PCR was carried out for the detection of class 1, 2 and 3 integrons using , and gene primers, respectively.

RESULTS

Antimicrobial susceptibility test showed that 75% of isolates were detected as multi-drug resistant (MDR), and lowest resistance was observed in ciprofloxacin (48.6%) and most resistance was in gentamicin (63.2%). Moreover, PCR results showed that 22 (15.3%) and 119 (82.6%) of isolates carried and genes, but gene was not found.

CONCLUSION

Since it is customary to observe Class I integrons in isolated from clinical samples, they are often responsible for antibiotic resistance gene transfer, which calls for evaluation of integrons as contributing factors in antibiotic resistance.