. 2020 Apr 23;39(9):1687–1702. doi: 10.1007/s10096-020-03882-z

Table 3.

Percentage inhibition of virulence factors of A. baumannii isolates in presence of QSIs

Virulence factor		Azithromycin	Erythromycin	Levamisole	Chloroquine	Propranolol
Biofilm	% inhibition range	33.6–93.3	20.2–93.3	33.8–92.9	67.4–93.5	37.8–92.9
Biofilm	% of isolates with ≥ 50% inhibition	80%	95%	85%	100%	75%
Twitching motility	% inhibition range	7.7–75	19.3–81.8	11.7–89.5	8.3–77.3	16.7–80
Twitching motility	% of isolates with ≥ 50% inhibition	30%	30%	50%	40%	35%
Surface-associated motility	% inhibition range	7.7–40	7.7–40	7.7–40	6.7–40	6.7–40
Surface-associated motility	% of isolates with ≥ 50% inhibition	60%	70%	50%	20%	30%
Esterase production	% inhibition range	5–56.5	21.9–66.7	5.5–59.2	5.5–59.2	13.4–38.1
Esterase production	% of isolates with ≥ 50% inhibition	10.5%	31.5%	5%	10.5%	0%
Sensitivity to H₂O₂	% inhibition range	6.3–50	10–100	3.3–100	6.7–50	6.3–40
Sensitivity to H₂O₂	% of isolates with ≥ 50% inhibition	5%	25%	10%	15%	0%
Phospholipase production	% inhibition range	18.2–100	13–100	26.1–100	13–100	21.7–100
Phospholipase production	% of isolates with ≥ 50% inhibition	62.5%	37.5%	62.5%	50%	62.5%