S. Brisse et al., Association of alterations in ParC and GyrA proteins with resistance of clinical isolates of Enterococcus faecium to nine different fluoroquinolones, ANTIM AG CH, 43(10), 1999, pp. 2513-2516
The parC and gyrA genes of 73 ciprofloxacin-resistant and 6 ciprofloxacin-s
usceptible Enterococcus faecium clinical isolates were partly sequenced. Al
terations in ParC and GyrA, possibly in combination with other resistance m
echanisms, severely restricted the in vitro activities of the nine quinolon
es tested. For all isolates, clinafloxacin and sitafloxacin showed the best
activities.