Study on Class Ⅰ Integron and Gene Cassettes in Escherichia coli Isolated from Chicken of Shandong
Wei Xiuli
Gao Yingchun
Chen Ling
Xu Enmin
Zhang Anyuan
Zhang Qi
Abstract：The epidemic situation of class Ⅰintegron and gene cassettes in Escherichia coli isolated from chicken farms of Jinan ,Dezhou,etc of Shandong Province were investigated .The results showed that the detec-tion rate of integrase gene was 53% and that of gene cassettes was 50%.The size of class Ⅰ integron gene cassettes ranged from 1 085 bp to 2 360 bp.Each of the 100 bacteria had 1 or 2 gene cassettes.Among which , the detection rate of dfrA17+aadA5 was the highest .This study showed that the class Ⅰintegron was widespread in multidrug resistant E.coli.And it was important molecular mechanism in the production and diffusion of multidrug resistance of bacteria .So, the farmers should use drugs scientifically and strengthen sur-veillance of antimicrobial resistance .
Keywords：IntegronGene cassettesDrug resistanceEscherichia coliChicken sourceShandong
Publication Date：2014-01-01
Online Publishing Date：2026-05-22(First online date of this platform, not the publication date of the document)
Pages：4( 17-20 )