International Journal of Microbiology

Research Article

Supershed Escherichia coli O157:H7 Has Potential for Increased Persistence on the Rectoanal Junction Squamous Epithelial Cells and Antibiotic Resistance

Table 2

AR and integrase gene profiles of SS-O157 (n = 53) isolates and control O157 (n = 6) strains.


	O157 strain grouping	PCR profiles^a

SS-O157 isolates	C1	acrB, ais, arnA, emrA, fsr, int, macA, mdtH, pmrD, rarD, yfbH, yjcP, yjcR
	C5	acrB, ais, arnA, emrA, fsr, int, macA, marA, mdtH, mdtO, pmrD, rarD, sul2, yfbH, yjcP, yjcR
	C2, 4, 6, 9, 11, 12, 13, 15, 17, 18, 19, 22, 28, 31, 32, 34, 35, 36, 38, 39, 40, 42, 53, 54, 57, 62, 66, 73, 74, 76, 77, 78, 80, 83, 85, 87, 88, 93, 94, 96, 98, 101	acrB, ais, arnA, emrA, fsr,int, macA, marA, mdtH, mdtO, pmrD, rarD, yfbH, yjcP, yjcR
	C7, 90	aac (3)-IV, acrB, ais, arnA, emrA, fsr, int, macA, marA, mdtH, mdtO, pmrD, rarD, yfbH, yjcP, yjcR
	C14, 16	acrB, ais, arnA, macA, marA, mdtH, mdtO, yfbH, yjcP, yjcR
	C23, 49	acrB, ais, arnA, macA, marA, mdtH, mdtO, pmrD, rarD, yfbH, yjcP, yjcR
	C45	acrB, ais, arnA, emrA, fsr, int, macA, marA, mdtH, pmrD, rarD, yfbH, yjcP, yjcR
	C99	acrB, ais, arnA, emrA, fsr, macA, marA, mdtH, mdtO, pmrD, rarD, sul2, yfbH, yjcP, yjcR
	C104	acrB, ais, arnA, emrA, fsr, int, macA, marA, mdtH, mdtO, pmrD, rarD, sul2, tetB, yfbH, yjcP, yjcR
Control O157 strains	Sakai, EDL 933, JEONG-1266, SS 52	acrB, ais, arnA, emrA, fsr, int, macA, marA, mdtH, mdtO, pmrD, rarD, sul2, yfbH, yjcP, yjcR
Control O157 strains	EC4115, SS 17	acrB, ais, arnA, emrA, fsr, int, macA, marA, mdtH, mdtO, pmrD, rarD, yfbH, yjcP, yjcR

^aGenes: aac(3)-IV = Aminoglycoside resistance; aadA1 = Streptomycin resistance; acrB = Acriflavine, aminoglycoside, and multidrug resistance efflux pump; ais = Polymyxin resistance protein, histidine phosphatase family protein; arnA = Polymyxin resistance protein; bla_CTX-M = Cephalosporin resistance; bla_TEM = Ampicillin resistance; catA1 = Chloramphenicol resistance; dfrA1 = Trimethoprim resistance; dhfrI = Trimethoprim resistance; emrA = Multidrug resistance protein A; fsr = Fosfomycin resistance; int = Integrase; macA = Macrolide-specific efflux protein; marA = Multiple antibiotic resistance protein; mcr1 = Colistin resistance; mcr2 = Colistin resistance; mdtH = Multidrug resistance protein; mdtO = Multidrug resistance protein; mph(A) = Macrolides resistance; pmrD = Polymyxin B resistance; qnrA = Quinolones resistance; rarD = Chloramphenicol resistance; sul1 = Sulfonamide resistance; tetA, tetB, tetC = Tetracycline resistance; yfbH = Polymyxin resistance; yjcP = Outer membrane component of tripartite multidrug resistance system; yjcR = Inner membrane component of tripartite multidrug resistance system.