tropisetron and azasetron
tropisetron has been researched along with azasetron* in 2 studies
Other Studies
2 other study(ies) available for tropisetron and azasetron
| Article | Year |
|---|---|
Receptor occupancy theory-based analysis of interindividual differences in antiemetic effects of 5-HT3 receptor antagonists.
The aim of this study was to estimate interindividual differences in the antiemetic effects of 5-HT(3) receptor antagonists by evaluating the influence of pharmacokinetics on 5-HT(3) receptor occupancies, based on receptor occupancy theory.. We analyzed interindividual differences of 5-HT(3) receptor occupancies and antiemetic effects after the oral and/or intravenous administration of standard doses of the following 5-HT(3) receptor antagonists: azasetron, granisetron, indisetron, ondansetron, ramosetron, and tropisetron.. The interindividual difference between maximum and minimum 5-HT(3) receptor occupancies after oral administration ranged from 0.6% to 64.0%, and that difference after intravenous administration ranged from 0.6% to 29.6%. Following oral administration, the interindividual difference between maximum and minimum complete vomiting inhibition rates ranged from 0.2% to 16.1%. After intravenous administration, that difference ranged from 0.8% to 52.5%.. Interindividual differences in the clinical effects of 5-HT(3) receptor antagonists could be evaluated based on receptor occupancy theory, and the differences varied among drugs. Drug selection considering these individual variations might be useful for the patients who experienced vomiting associated with chemotherapy. Topics: Antiemetics; Antineoplastic Combined Chemotherapy Protocols; Benzimidazoles; Bridged Bicyclo Compounds, Heterocyclic; Drug Administration Schedule; Granisetron; Humans; Indoles; Models, Theoretical; Ondansetron; Oxazines; Serotonin 5-HT3 Receptor Antagonists; Treatment Outcome; Tropisetron; Vomiting | 2009 |
The activity of dihydropyrimidine dehydrogenase from rat liver was not affected by any of five 5-hydroxytryptamine antagonists.
We estimate the influence of five 5-hydroxytryptamine receptor (5-HT3) antagonists on the activity of dihydropyrimidine dehydrogenase (DPDase), the rate-limiting enzyme in 5-fluorouracil (5FU) metabolism. The activity of DPDase from the rat liver was compared in the cytosol mixture of 5FU incubated with or without each of five 5-HT3 antagonists. DPDase activity was not altered in the presence of any 5-HT3 antagonist studied here. It may be inferred from these results that the any 5-HT3 receptor antagonist examined in this study has little or no effect on fluorouracil catabolism. Topics: Animals; Antiemetics; Antimetabolites, Antineoplastic; Biotransformation; Bridged Bicyclo Compounds, Heterocyclic; Cytosol; Dihydrouracil Dehydrogenase (NADP); Fluorouracil; Granisetron; Indoles; Liver; Male; Ondansetron; Oxazines; Oxidoreductases; Quinolizines; Rats; Rats, Sprague-Dawley; Receptors, Serotonin; Receptors, Serotonin, 5-HT3; Serotonin Antagonists; Tropisetron | 1996 |