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Article Abstract
In order to evaluate the safety of CH-19 Sweet extract that contains capsinoids, teratology studies were conducted in pregnant Sprague-Dawley rats (20 rats per group) and pregnant New Zealand white rabbits (17 to 22 animals per group). The test substance was administered to rats by gavage for 11 days on gestation days 7 to 17 at doses of 0 (vehicle), 1.25, 2.5, and 5.0 ml/kg and to rabbits for 13 days on gestation days 6 to 18 at doses of 0 (vehicle), 0.25, 0.5, and 1.0 ml/kg. As the concentration of capsinoids in CH-19 Sweet extract was 72.2 to 75.05 mg/ml, the resulting dose of capsinoids administered to rats was 90.25, 180.5, and 361 mg/kg, and to rabbits was 18.76, 37.53, and 75.05 mg/kg in the vehicle, low-, mid-, and high-dose groups, respectively. In the rat study, no deaths occurred in any group and there were no test substance-related changes or abnormalities in clinical signs, body weight, food consumption, or gross pathological findings. There were no test substance-related changes in the number of corpora lutea, number or index of implantations, index of embryofetal deaths, number of live fetuses, sex ratio, fetal body weight at the end of the gestation period, or abnormalities in the placenta of live fetuses. There were no test substance-related abnormalities or variations in the external, skeletal, or visceral examinations of live fetuses. It was concluded that the test article caused neither teratogenic effects nor abnormalities in the progression of ossification. In the rabbit study, there were no test substance-related effects on clinical signs, body weight, food consumption, or necropsy findings. There were neither test substance-related abortions nor test substance-related effects on the number of corpora lutea, or number or index of implantations. There were no test substance-related effects on the number of dead embryos/fetuses, the number of live fetuses, sex ratio, body weight of live fetuses, or gross pathological finding in the placentas. There were no test substance-related external abnormalities or incidences of visceral or skeletal abnormalities or variations, and there were no test substance-related effects on the progress of ossification in any group. The authors concluded the no observed adverse effect level (NOAEL) of CH-19 Sweet extract containing capsinoids on pregnant animals and fetal development/growth was > 5.0 ml/kg/day (> 361 mg/kg/day as capsinoids) in rats and > 1.0 ml/kg/day (> 75.05 mg/kg/day as capsinoids) in rabbits.
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