ICI 153110

Alderley Park APfSD rats are used in this study. In all, 150 male rats and 150 female rats are assigned to four groups (one control and three treatment) in the two separate studies; 30 per sex representing the main (regular) test groups and 15 per sex for investigating reversibility of effects following treatment at the highest dose employed (withdrawal studies). The dose levels are 5, 10, and 250 mg/kg/day of ICI 153110. All animals are dosed orally, by gavage, using a plastic syringe and a flexible catheter. Equal numbers of animals per sex in the four groups are necropsied necropsied at each of two time points; following at least 28 consecutive days dosing (1 month) and 182 consecutive days of dosing (6 months). All animals are observed at least twice daily for any abnormal signs, all of which are recorded. Body weights, food consumption, water consumption, clinical pathology, and pharmacokinetics are also measured^[1].

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