Skip to main content

Table 1 The percentage of P. aeruginosa isolates that were non-susceptible to antimicrobials and demonstrated overexpression of efflux genes and ampC β-lactamase, coupled with oprD down-regulation.

From: Efflux pumps expression and its association with porin down-regulation and β-lactamase production among Pseudomonas aeruginosa causing bloodstream infections in Brazil

Antimicrobial Non-susceptible (n= 59) % of isolates (n)
   ABM+ (16) XY+ (30) AmpC+ (07) OprD- (41)
Aztreonam 21 (35.6) 56.3 (09) 43.3 (13) 71.4 (05) 34.1 (14)
Imipenem 31 (52.5) 56.3 (09) 80.0 (24) 71.4 (05) 65.9 (27)
Meropenem 31 (52.5) 62.5 (10) 80.0 (24) 71.4 (05) 63.4 (26)
Cefepime 30 (50.8) 56.3 (09) 80.0 (24) 85.7 (06) 58.5 (24)
Ceftazidime 33 (55.9) 50.0 (08) 76.7 (23) 100 (07) 63.4 (26)
Amikacin 35 (59.3) 68.8 (11) 86.7 (26) 57.1 (04) 70.7 (29)
Gentamicin 40 (67.8) 75.0 (12) 86.7 (26) 57.1 (04) 65.9 (27)
Ciprofloxacin 38 (64.4) 81.3 (13) 86.7 (26) 85.7 (06) 63.4 (26)
  1. The abbreviations ABM+, XY+ and AmpC+ designate MexAB-OprM, MexXY, and AmpC overexpression, respectively.
  2. OprD -: OprD porin down-regulation.