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A correlation with type of sulfonamide resistance gene in Escherichia coli and synergy between trimethoprim and sulfamethoxazole

✍ Scribed by Dr. Carrie R. Valentine; James M. Hawk; Mary M. Christian; Roger W. Youmans


Publisher
John Wiley and Sons
Year
1992
Tongue
English
Weight
350 KB
Volume
32
Category
Article
ISSN
0233-111X

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✦ Synopsis


Plasmids carrying type I or I1 sulfonamide-resistance (Su') genes were evaluated for their effect on synergy between trimethoprim (Tmp) and sulfamethoxyzole (Smx) in E. coli. Strain 553 containing each of three plasmids (Rl, pSu, and R388) with the type I Su' gene displayed a synergistic response to Tmp/Smx; strain LE392 containing a plasmid (RSF1010) with the type I1 Su' gene displayed no synergy. The difference in synergy between type I and type I1 Su' genes might be explained by the diKerence in amount of resistant enzyme produced.