Gene/Protein Disease Symptom Drug Enzyme Compound
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Query: UMLS:C0027497 (nausea)
 23,468 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

The efficacy of ondansetron, a selective 5-HT3 receptor antagonist, in preventing postoperative nausea and vomiting in surgical patients was studied. Fifty women were randomized in a double-blind manner to receive either two 8 mg doses of intravenous ondansetron or two doses of placebo vehicle: the first given just before general anesthesia induction and the second 8 hours later. During the first 24 postoperative hours, the number of emetic episodes was recorded and the subjects rated their nausea on a scale from 0 to 10. Ondansetron-treated subjects had fewer emetic episodes (p less than 0.001) and lower subjective nausea scores (p less than 0.001). The number of complete responders (no emetic episodes and no rescue therapy) was 1 of 24 (4%) and 15 of 26 (58%) in the placebo and ondansetron groups, respectively (p less than 0.001). Ondansetron is clearly more effective than placebo in the prophylaxis of postoperative nausea and vomiting. The adverse event profile for ondansetron was similar to that of placebo.
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PMID:Ondansetron is effective in decreasing postoperative nausea and vomiting. 138 67

The anti-emetic effects, safety and usefulness of ondansetron, a 5-HT3 receptor antagonist, given orally once daily for 3-5 consecutive days, were investigated in patients receiving a high single dose (greater than or equal to 50 mg/m2 or 75 mg/body) or lower multiple doses (greater than or equal to 15-20 mg/m2/day for 3-5 consecutive days) of cisplatin. Ondansetron 4 mg was administered orally once daily for 3-5 consecutive days. Efficacy rates in controlling nausea and emesis over the 3-5 days were 77.3% (17/22 cases) and 66.7% (6/9 cases) in patients receiving a high single dose and lower multiple doses of cisplatin, respectively. Side effects were observed in 2 cases (headache and elevation of blood pressure in one case and only headache in the other case.). Abnormality in clinical laboratory findings was observed in 1 case. From the above, ondansetron, showing high efficacy by oral administration 4 mg once daily for 3-5 consecutive days, without any problem in safety, was considered to be a useful anti-emetic agent.
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PMID:[Investigation of anti-emetic effect of ondansetron tablet in multiple doses on nausea and emesis associated with cisplatin]. 138 74

We examined the anti-emetic effect, safety and usefulness of ondansetron hydrochloride, a selective 5-HT3 receptor antagonist, given orally once daily at the dosage of 4 mg, for 3 to 5 consecutive days to patients with nausea and emesis induced by non-platinum anti-cancer drugs such as cyclophosphamide, doxorubicin and carboplatin. Out of 84 cases where anti-emetic effects were evaluated, numbers of cases assessed as excellent and good were 36 (83.3%) and 34 (40.5%), respectively, the efficacy rate being 83.3% (70/84). Side effects, such as moderate constipation (3 cases) and mild headache (3 cases), were observed in 8/85 cases (9.4%). Abnormalities in clinical laboratory findings including elevation of hepatic function and uricacid values and increase in eosinocyte counts, were observed in 3/85 cases (3.5%). As to overall safety, 78/85 cases (91.8%) were evaluated as having no problem in safety, and 7/85 cases (8.2%), as having minor problem in safety. As to clinical usefulness based on anti-emetic effect and overall safety, out of 79 cases the drug was assessed as very useful in 29 cases (36.7%) and useful in 35 cases (44.3%), the rate of "useful" or above being 81.0% (64/79). Furthermore, when ondansetron was administered in 3 courses of chemotherapy, though the number of patients was small, it was shown that anti-emetic effect of ondansetron did not decline and no problem in safety was observed. From the above, ondansetron which exerted adequate anti-emetic effect in 4 mg once daily doses was considered as a useful and safe anti-emetic in treatment of nausea and emesis associated with cancer chemotherapy.
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PMID:[Examination of inhibitory effect, safety and usefulness of SN-307 (ondansetron) administered orally once daily for 3-5 consecutive days on nausea and emesis associated with non-platinum anti-cancer drugs]. 138 75

Ondansetron, a selective 5-HT3 receptor antagonist, has already been reported to have a marked effect to alleviate or prevent nausea and vomiting associated with cancer chemotherapy, after its intravenous administration. The present study was planned to examine the usefulness of its tablet form, which was prepared for the convenient use in outpatients receiving chemotherapy. In order to make an objective evaluation of anti-emetic effect and safety of ondansetron 4 mg tablet, this study was conducted in double-blind comparison versus placebo in patients receiving cisplatin at a single dose of 50mg/m2 or higher. Either 4 mg of ondansetron or placebo (lactose tablet) was administered orally once at 2 hrs prior to administration of cisplatin. If any satisfactory anti-emetic effects were not obtained, 4 mg of ondansetron injection was given once intravenously as a rescue medication. The inhibitory effect on nausea and vomiting was assessed in 4 grades as "excellent", "good", "fair" and "poor" based on severity of nausea and number of vomiting that occurred during the first 24hrs after administration of cisplatin. When rescue medication was conducted, the case was assessed as "poor". Ondansetron was significantly superior to placebo in inhibition of nausea and vomiting, in which efficacy rates (excellent+good) of ondansetron and placebo groups were 58.1% (25/43 cases) and 16.7% (7/42 cases), respectively. Number of cases requiring rescue medication with ondansetron injection was obviously greater in placebo group (31 cases) than that in ondansetron group (12 cases). In those patients given ondansetron injection as the rescue medication, satisfactory effects were obtained in 5 cases in ondansetron group and in 18 cases in placebo group. Although side effects including chest itching (ondansetron group), headache and dull headache (placebo group) were observed after the rescue medication with ondansetron injection, these symptoms were not severe and disappeared after 1-2 days. As mentioned above, ondansetron tablet was shown to possess excellent anti-emetic effect on nausea and emesis induced by high dose of cisplatin and to have no problem in safety. Hence ondansetron was proven to be clinically very useful anti-emetic.
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PMID:[Anti-emetic effect and safety of ondansetron tablet in double-blind comparison with placebo]. 141 14

This study was carried out to assess the efficacy of oral ondansetron, a new 5HT3 receptor antagonist, in patients undergoing thyroid surgery. It included 60 patients, randomly assigned to two groups, and receiving orally, 1 h before induction of anaesthesia, either 8 mg of ondansetron (n = 29) or a placebo (n = 30). One patient was excluded. The same anaesthetic protocol, consisting of 3 to 5 micrograms.kg-1 of fentanyl, 4 to 6 mg.kg-1 of thiopentone, and 0.5 mg.kg-1 of atracurium, was used in all. Anaesthesia was maintained with 50% nitrous oxide in oxygen with 0.8 to 1% endtidal concentration of isoflurane and additional boluses of 0.1 mg of fentanyl as required. The incidence and intensity of nausea, graded mild, moderate or severe, and the incidence of vomiting were recorded postoperatively. During the first twelve hours after surgery, 40% of patients in the placebo group had nausea (16.7% mild, 20% moderate and 6.7% severe), and 50% vomited. In the ondansetron group, nausea and vomiting occurred in 13.8% and 20.4% of patients respectively. The 4 patients in the latter group complained of major nausea. The differences between the groups were statistically significant: p = 0.025 for nausea and p = 0.042 for vomiting. It is concluded that oral ondansetron, 8 mg taken orally 1 h before surgery, significantly reduces the incidence of nausea and vomiting during the first twelve postoperative hours. As it is easy to use and has no side-effects, it might be of interest in day-case surgery patients, despite its high cost.
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PMID:[Prevention of postoperative nausea and vomiting by ondansetron]. 147 80

Tropisetron, a 5-HT3 receptor antagonist, was evaluated as antiemetic prophylaxis during postoperative abdominal irradiation of ovarian carcinoma patients. Twenty consecutive women with Stages I-III (FIGO) epithelial ovarian carcinomas were included. At the start of radiotherapy all patients were clinically tumor-free. Twelve women received irradiation on whole-abdominal fields, 1.0 Gy per fraction, during 6 weeks. Eight women were irradiated on the lower abdomino-pelvic fields, 1.7 Gy per fraction, during 5 weeks. Efficacy and adverse events were recorded by the patients in diary-form booklets using visual analog scales (VAS). All patients completed the treatment series and none was lost to follow-up. Nausea, generally mild (mean 20 mm VAS) and of short duration, increased from start (30%) to end of radiotherapy (54%). Episodes of vomiting were few in number and occurred in less than 10% of the cases. Diarrhoea was common towards the end of the radiotherapy courses, especially when the dose per fraction was 1.7 Gy and the need for extra antidiarrhoeal medication (loperamide) increased from 38% at the start to 100% at the end. The mean weight loss was only 1.2 kg during 5-6 weeks. The overall ratings for quality of life were excellent or good in 75-85% of the cases. The efficacy of tropisetron was rated excellent or good in 80% of the cases and the tolerability likewise in 85% in the overall evaluation of the drug made by the investigator. Tropisetron therefore seems to be a promising and well-tolerated drug in conjunction with extended radiotherapy on the whole- or lower-abdominal fields.(ABSTRACT TRUNCATED AT 250 WORDS)
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PMID:Tropisetron, a new 5-HT3 receptor antagonist, in the prevention of irradiation-induced nausea, vomiting and diarrhoea. 148 16

Tropisetron, a 5-HT3 receptor antagonist, was evaluated as antiemetic prophylaxis during postoperative abdominal irradiation of ovarian carcinoma patients. Twenty consecutive women with stages I-III (FIGO) epithelial ovarian carcinomas were included. Nausea, generally mild and of short duration, increased from start (30%) to end of radiotherapy (54%). Episodes of vomiting were few in number and occurred in less than 10% of the cases. Diarrhea was common toward the end of the radiotherapy courses. The overall ratings for quality of life were excellent or good in 75-85% of the cases. Tropisetron seems to be a promising and well-tolerated drug in conjunction with extended radiotherapy.
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PMID:Tropisetron, a new 5-HT3 receptor antagonist, in the prevention of radiation-induced emesis. 154 89

Serotonin (5-hydroxytryptamine; 5-HT) is found in the enteric nervous system where it has been implicated in controlling gastrointestinal motor function. A number of receptor or recognition sites have been identified in the gut, but recently most attention has focused on the 5-HT3 and 5-HT4 receptors. The functional role of the 5-HT3 receptor remains incompletely understood, but it is probably involved in the modulation of colonic motility and visceral pain in the gut. A number of selective 5-HT3 antagonists have been developed including ondansetron, granisetron, tropisetron renzapride and zacopride. While the substituted benzamide prokinetics (for example, metoclopramide, cisapride) also block 5-HT3 receptors in high concentrations, their prokinetic action is believed to be on the basis of their agonist effects on the putative 5-HT4 receptor. Some 5-HT3 antagonists have 5-HT4 agonist activity (for example, renzapride, zacopride) and others do not (for example, ondansetron, granisetron), while tropisetron in high concentrations is a 5-HT4 antagonist. Based on the pharmacological data, it has been suggested that specific 5-HT antagonists and agonists may prove to be beneficial in a number of gastrointestinal disorders including the irritable bowel syndrome, functional dyspepsia, non-cardiac chest pain, gastrooesophageal reflux and refractory nausea. In this review, the rationale for the use of these compounds is discussed, and the available experimental evidence is summarized.
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PMID:Review article: 5-hydroxytryptamine agonists and antagonists in the modulation of gastrointestinal motility and sensation: clinical implications. 160 46

Trials of selective 5-hydroxytryptamine3 receptor antagonists have shown excellent antiemetic activity for chemotherapy containing cisplatin when compared with high-dose metoclopramide. There is little information about the efficacy of these new agents for chemotherapy other than for high-dose cisplatin. We performed a double-blind, randomized trial comparing a single dose of the 5-hydroxytryptamine3 receptor antagonist granisetron (BRL 43694A) as a single intravenous dose with dexamethasone plus prochlorperazine in 152 patients receiving their first course of moderately emetogenic chemotherapy (mainly doxorubicin- and cyclophosphamide-containing combinations). During the first 24 hours, there was a statistically significant advantage for the granisetron group in terms of the prevention of both nausea and emesis. There was no difference in the frequency of reported adverse events. We conclude that granisetron is more effective than dexamethasone plus prochlorperazine in patients who are receiving moderately emetogenic cytotoxic agents.
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PMID:Superiority of granisetron to dexamethasone plus prochlorperazine in the prevention of chemotherapy-induced emesis. 165 63

Radiotherapy-induced emesis is poorly controlled with existing antiemetics. 5-Hydroxytryptamine (5HT3) receptor antagonists are a new class of antiemetics which have been demonstrated to be effective in controlling cytotoxic-induced emesis. We have prospectively studied the antiemetic efficacy of the 5HT3 receptor antagonist granisetron in an open non-randomized efficacy and toxicity study, at two dose levels, in patients receiving lower hemibody radiotherapy for multiple bone metastases. Of the 22 patients studied, 13 patients received 20 micrograms/kg and nine patients 40 micrograms/kg of granisetron, administered as an intravenous infusion 1 h before radiotherapy. Radiotherapy was administered as a single exposure to the lower half body to a midline dose of 8 Gy. A complete response (no nausea or vomiting) was observed in 9/13 patients at the lower dose level and 6/9 patients at the higher level. No major adverse events were recorded. We conclude that granisetron is a well-tolerated and effective antiemetic agent in radiotherapy-induced emesis. Formal comparison with conventional antiemetic agents in this situation is required.
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PMID:The antiemetic effect of granisetron in lower hemibody radiotherapy. 165 14


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