Enteric Diseases Laboratory Branch, Centers for Disease Control and Prevention, Atlanta, Georgia, USA.
IHRC, Inc., Atlanta, Georgia, USA.
Antimicrob Agents Chemother. 2018 Jun 26;62(7). doi: 10.1128/AAC.00653-18. Print 2018 Jul.
Nontyphoidal (NTS) causes an estimated 1.2 million illnesses, 23,000 hospitalizations, and 450 deaths each year in the United States. Decreased susceptibility to ciprofloxacin (DSC) has historically been associated with chromosomal mutations of the quinolone resistance determining region (QRDR), but plasmid-mediated quinolone resistance (PMQR) genes are increasing. To investigate DSC among serotype Newport strains, we examined 40 isolates from 1996 to 2016 with DSC. Thirty isolates (71%) contained the PMQR gene and eight isolates (19%) contained a QRDR.
在美国,非伤寒型(NTS)每年估计导致 120 万例疾病、2.3 万例住院和 450 例死亡。对环丙沙星的敏感性降低(DSC)历史上与喹诺酮类药物耐药决定区(QRDR)的染色体突变有关,但质粒介导的喹诺酮类耐药(PMQR)基因正在增加。为了研究血清型纽波特菌株中的 DSC,我们检测了 1996 年至 2016 年间 40 株具有 DSC 的分离株。30 株(71%)含有 PMQR 基因,8 株(19%)含有 QRDR。