Table 1.
Clonogenic survival (%) of cells incubated with antioxidants after exposure to 321 kJ/m2 UVA- or 8.1 kJ/m2 UVB-radiation
| Antioxidant | Cells seeded before radiationa | Cells seeded 13 days after radiationa | ||
| UVA | UVB | UVA | UVB | |
| Noneb | 36 ± 12 | 33 ± 10 | 85 ± 7 | 80 ± 5 |
| Catalase | 21 ± 6 | 30 ± 5 | 84 ± 5 | 127 ± 12d |
| GSHc | 19 ± 8 | 41 ± 13 | 127 ± 15 | 163 ± 26d |
| SODc | 28 ± 6 | 29 ± 4 | 135 ± 12 | 105 ± 9 |
aMean values ± standard error from 3–10 independent experiments.
bThe cloning efficiency of unirradiated cells treated with antioxidants for 6 days after seeding were not significantly different from untreated cells.
cThe cloning efficiency for unirradiated cells treated with GSH or SOD for 13 days before seeding was significantly lower than for unirradiated cells not treated with antioxidants (t-test, p < 0.05).
dSignificantly higher survival than irradiated cells not treated with antioxidants (t-test, p < 0.05).