PPT prevents ovariectomy-induced weight gain and loss of bone mineral density.PPT induces gene expression in the hypothalamus following systemic administration in vivo.In a short-term (4 d) uterotrophic assay, PPT was found to be as efficacious as 17alpha-ethinyl-17beta-estradiol in stimulating uterine weight gain and up-regulating complement 3 gene expression. In a 6-wk chronic model, PPT completely prevented the ovariectomy-induced body weight increase and loss of bone mineral density. It also increased uterine weight and markedly reduced plasma cholesterol levels in these mature animals. PPT was also effective in the brain. It increased progesterone receptor mRNA in the arcuate and ventromedial nuclei of the hypothalamus and prevented experimentally induced hot flushes.
| Molecular Weight | 386.45 |
| Formula | C24H22N2O3 |
| CAS Number | 263717-53-9 |
| Solubility (25°C) | DMSO 90 mg/mL |
| Storage |
Powder -20°C 3 years ; 4°C 2 years In solvent -80°C 6 months ; -20°C 1 month |
| Species | Mouse | Rat | Rabbit | Guinea pig | Hamster | Dog |
| Weight (kg) | 0.02 | 0.15 | 1.8 | 0.4 | 0.08 | 10 |
| Body Surface Area (m2) | 0.007 | 0.025 | 0.15 | 0.05 | 0.02 | 0.5 |
| Km factor | 3 | 6 | 12 | 8 | 5 | 20 |
| Animal A (mg/kg) = Animal B (mg/kg) multiplied by | Animal B Km |
| Animal A Km |
For example, to modify the dose of Compound A used for a mouse (20 mg/kg) to a dose based on the BSA for a rat, multiply 20 mg/kg by the Km factor for a mouse and then divide by the Km factor for a rat. This calculation results in a rat equivalent dose for Compound A of 10 mg/kg.
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