Table 2.
Doseresponse data in human cells and rat tissue. (A) dG-ABP adduct content and absolute standard deviation from RT-4 human bladder carcinoma cells that were treated with 4-ABP dissolved in DMSO. Cells were cultured in triplicate, pooled, and analyzed in triplicate. (B) Adduct quantity and absolute standard deviation from bladder tissue DNA extracted from twelve 2-month old F/344/NHsd rats that were administered 4-ABP prepared in DMSO. DNA from replicate doses was pooled before analysis and injections were completed in triplicate
Concentration of 4-ABP in DMSO (μM) | Analyte/internal standard by peak area | fmol dG-ABP on column | Number of adducts detected in 108 nucleosides |
---|---|---|---|
(A) 4-ABP dosed human bladder RT-4 cells | |||
0 | Not detected | Not detected | Not detected |
0.5 | 0.065±0.005 | 0.2±0.3 | 4±8 |
5.0 | 0.14±0.03 | 0.9±0.5 | 20±10 |
50 | 4.0±0.8 | 40±8 | 1100±200 |
Concentration of 4-ABP in DMSO IP injection (mg 4-ABP/kg body weight) |
Analyte/internal standard by peak area | fmol dG-ABP on column | Number of adducts detected in 108 nucleosides |
| |||
(B) 4-ABP dosed F/344/NHsd rats | |||
0 | Not detected | Not detected | Not detected |
25 | 0.34±0.09 | 3±1 | 80±30 |
100 | 0.49±0.08 | 4.4±0.9 | 120±20 |
250 | 0.5±0.1 | 4±1 | 120±30 |