Study Attribute | Value |
---|---|
CEBS Accession Number: | 002-02966-0002-0000-7 |
Chemical Name: | Trimethoprim |
CASRN: | 738-70-5 |
NTP Study Type: | Genetic Toxicology - Mammalian Cell Cytogenetics |
NTP Study ID: | 522207_CA |
Study Result: | Negative |
Activation | Trial | Trial Call |
---|---|---|
No Activation | 1 | Negative |
Induced Rat Liver S9 | 1_S9 | Negative |
Dose µg/mL | Total Cells Examined | Total Aberrations | Complex Aberrations | Simple Aberrations | Other Abs | ||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
No. of Abs | Abs Per Cell | % Cells With Abs | No. of Abs. | Abs Per Cell | % Cells With Abs | No. of Abs. | Abs Per Cell | % Cells With Abs | No. of Abs. | Abs Per Cell | % Cells With Abs | ||||
Vehicle Control: | Dimethyl Sulfoxide | 0 | 100 | 2 | 0.020 | 2.0 | 0 | 0.000 | 0.0 | 2 | 0.020 | 2.0 | 0 | 0.000 | 0.0 |
Test Chemical: | Trimethoprim | 80 | 100 | 5 | 0.050 | 5.0 | 1 | 0.010 | 1.0 | 4 | 0.040 | 4.0 | 0 | 0.000 | 0.0 |
260 | 100 | 4 | 0.040 | 4.0 | 1 | 0.010 | 1.0 | 3 | 0.030 | 3.0 | 0 | 0.000 | 0.0 | ||
800 | 100 | 2 | 0.020 | 2.0 | 0 | 0.000 | 0.0 | 2 | 0.020 | 2.0 | 0 | 0.000 | 0.0 | ||
Positive Control: | Triethylenemelamine | 0.15 | 100 | 31 | 0.310 | 24.0 | 10 | 0.100 | 9.0 | 21 | 0.210 | 19.0 | 0 | 0.000 | 0.0 |
Trend: | -0.121 | 0.008 | -0.135 | ||||||||||||
Probability: | 0.548 | 0.497 | 0.554 |
Dose µg/mL | Total Cells Examined | Total Aberrations | Complex Aberrations | Simple Aberrations | Other Abs | ||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
No. of Abs | Abs Per Cell | % Cells With Abs | No. of Abs. | Abs Per Cell | % Cells With Abs | No. of Abs. | Abs Per Cell | % Cells With Abs | No. of Abs. | Abs Per Cell | % Cells With Abs | ||||
Vehicle Control: | Dimethyl Sulfoxide | 0 | 100 | 3 | 0.030 | 3.0 | 0 | 0.000 | 0.0 | 3 | 0.030 | 3.0 | 0 | 0.000 | 0.0 |
Test Chemical: | Trimethoprim | 80 | 100 | 4 | 0.040 | 4.0 | 1 | 0.010 | 1.0 | 3 | 0.030 | 3.0 | 0 | 0.000 | 0.0 |
260 | 100 | 5 | 0.050 | 5.0 | 2 | 0.020 | 2.0 | 3 | 0.030 | 3.0 | 0 | 0.000 | 0.0 | ||
800 | 100 | 5 | 0.050 | 5.0 | 0 | 0.000 | 0.0 | 5 | 0.050 | 5.0 | 0 | 0.000 | 0.0 | ||
Positive Control: | Cyclophosphamide | 15 | 100 | 33 | 0.330 | 30.0 | 14 | 0.140 | 14.0 | 19 | 0.190 | 18.0 | 0 | 0.000 | 0.0 |
Trend: | 0.778 | 0.274 | 0.725 | ||||||||||||
Probability: | 0.218 | 0.392 | 0.234 |