TABLE 3.
Additional parameter values associated with the effects of antibiotics
Antibiotic (ciprofloxacin) parameter | Value | How calculated |
---|---|---|
κkill, maximum antibiotic killing rate | 18.5 h−1 | Fitting an Emax model to antibiotic kill curves (18) |
EC50, concentration of antibiotic at which the killing rate is half its maximum |
0.3697 μg/ml | Calculated using the MIC of ciprofloxacin for the phage-resistant PAPS strain (7) |
, concentration of antibiotic at which the killing rate is half its maximum |
4.070 μg/ml | Calculated using the MIC of ciprofloxacin for the phage-sensitive PAPS strain (7) |
H, Hill coefficient | 1 | From reference 18 |
MIC of ciprofloxacin for P. aeruginosa PAPS phage-resistant strain | 0.014 μg/ml | From reference 7 |
MIC of ciprofloxacin for P. aeruginosa PAPS phage-sensitive strain | 0.172 μg/ml | From reference 7 |
θ, antibiotic elimination rate from serum samples | 0.53 h−1 | Estimated from antibiotic concentration-vs-time curves; concentration of ciprofloxacin was measured in serum samples of P. aeruginosa-infected mice (38) |
Antibiotic-sensitive bacterial parameters | ||
*μ1, probability of emergence of antibiotic-sensitive (phage-resistant) mutants per cellular division |
2.85 × 10−8 | Estimated from experimental measurements (39) |
μ2, probability of emergence of phage-sensitive (antibiotic-resistant) mutants per cellular division |
2.85 × 10−8 | Approximated to the estimates from reference 39 |
rA, maximum growth rate of antibiotic-sensitive (phage-resistant) bacteria |
0.675 h−1 | 10% tradeoff between resistance against phage and growth rate (43) |