论文部分内容阅读
AIM: To study the mechanism of antimigraine activity of Tanacetum parthenium ( Feverfew), its extracts and parthenolide, a component of Feverfew, by observing their effect on 5-HT storage and release, and stimulation of 5-HT2B and 5-HT2A receptors. Also to standardize a dosage form of Feverfew with respect to its parthenolide content. METHODS: Isometric responses to 5-HT and an indirect acting serotonergic, d-fenfluramine, were obtained on rat fundus and ileum. In one set of experiments the effect of dichloromethane extract of Feverfew and parthenolide was observed on the above. The extract was then thermally degraded upto 10 %, 23 %, and 33 % with respect to its parthenolide content by keeping at 60℃ and 75 % relative humidity and the experiments were repeated. In another set of experiments rats were fed with 20 mg/kg Feverfew powder (equivalent to a human dose of 500 μg parthenolide per day) for 30 d or were ip injected with parthenolide (23.4 μg/day) for 7 d. In the same set of experiments one gro
AIM: To study the mechanism of antimigraine activity of Tanacetum parthenium (Feverfew), its extracts and parthenolide, a component of Feverfew, by observing their effect on 5-HT storage and release, and stimulation of 5-HT2B and 5-HT2A receptors. Also to standardize a dosage form of Feverfew with respect to its parthenolide content. METHODS: Isometric responses to 5-HT and an indirect acting serotonergic, d-fenfluramine, were obtained on rat fundus and ileum. In one set of experiments the effect of dichloromethane Extract of Feverfew and parthenolide was observed on the above. The extract was then heat degraded upto 10 %, 23 %, and 33 % with respect to its parthenolide content by keeping at 60°C and 75 % relative humidity and the experiments were repeated. In Another set of experiments rats were fed with 20 mg/kg Feverfew powder (equivalent to a human dose of 500 μg parthenolide per day) for 30 d or were ip injected with parthenolide (23.4 μg/day) for 7 d. In the same set Of Experiments one gro