Table 2.
Effect of physico-chemical disinfectant-exposure on asp23 expressions by S. epidermidis cells.
| Type of cell | Mean ± SEM of asp23 expressions in response to physico-chemical disinfectants exposures | |||
|---|---|---|---|---|
| Heat | NaCl | NaOCl | H2O2 | |
| Biofilm (n = 10) | ||||
| Unexposed | 0.0178 ± 0.0021 | 0.0062 ± 0.0012 | 0.0286 ± 0.0051 | 0.0078 ± 0.0010 |
| Exposed | 7.4780 ± 0.9350 | 0.0127 ± 0.0032 | 112.11 ± 16.720 | 0.0869 ± 0.0161 |
| p < 0.0001 | p = 0.0203 | p < 0.0001 | p = 0.0002 | |
| Planktonic (n = 10) | ||||
| Unexposed | 0.0204 ± 0.0017 | 0.0052 ± 0.0011 | 0.0425 ± 0.0085 | 0.0141 ± 0.0019 |
| Exposed | 4.7510 ± 0.6449 | 0.0081 ± 0.0028 | 56.474 ± 16.37 | 0.0220 ± 0.0055 |
| p < 0.0001 | p = 0.1831 | p = 0.0073 | p = 0.0725 | |
The asp23 expression levels of S. epidermidis biofilm and planktonic cells exposed to 50 °C, 0.8 M NaCl, 5 mM NaOCl or 50 μM H2O2 for 60 minutes and the unexposed controls. For each sample, three repeats of asp23 expression measurements were performed. Boldface represent a statistically significant difference between the physico-chemical disinfectant-exposed cells and the unexposed controls as determined by paired-t test (p < 0.05).