Table 2.
Lag phase and growth rate of the growth curves of survival on brushite bone cement containing organic nanoparticles
| Concentration of nanoparticles (% w/w) | λ (hour) | Growth rate (hour−1) |
|---|---|---|
| S. aureus | ||
| 0 | 1.18±0.12 | 0.25±0.07 |
| 0.1 | 6.61±1.06 | 0.35±0.14 |
| 0.5 | >24 | No growth |
| 1 | >24 | No growth |
| 5 | >24 | No growth |
| MRSA | ||
| 0 | 0.91±0.28 | 0.27±0.06 |
| 0.1 | 1.32±0.17 | 0.28±0.03 |
| 0.5 | 2.27±0.35 | 0.31±0.04 |
| 1 | 10.00±1.11 | 0.09±0.01 |
| 5 | >24 | No growth |
| A. baumannii | ||
| 0 | 1.67±0.19 | 0.30±0.02 |
| 0.1 | 1.43±0.08 | 0.41±0.06 |
| 0.5 | 3.49±0.63 | 0.15±0.07 |
| 1 | >24 | No growth |
| 5 | >24 | No growth |
| S. epidermidis | ||
| 0 | 3.29±0.71 | 0.18±0.03 |
| 0.1 | 4.13±0.31 | 0.19±0.03 |
| 0.5 | >24 | No growth |
| 1 | >24 | No growth |
| 5 | >24 | No growth |
Note: Mean ± standard deviation.
Abbreviations: S. aureus, Staphylococcus aureus; A. baumannii, Acinetobacter baumannii; S. epidermidis, Staphylococcus epidermidis; MRSA, methicillin-resistant Staphylococcus aureus.