Gene/Protein Disease Symptom Drug Enzyme Compound
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Query: UMLS:C0042963 (vomiting)
 31,883 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

Effects of various emetic and antiemetic drugs were studied using Suncus murinus for its potential use as an experimental model in emetic research. Subcutaneous injection of nicotine bitartrate (10-15 mg/kg), veratrine sulfate (0.5-1.0 mg/kg), emetine dihydrochloride (40-80 mg/kg) and oral administration of copper sulfate (20-100 mg/kg) caused dose-dependent emesis in suncus. The ED50 of nicotine, veratrine, emetine and copper sulfate were 7.9, 0.4, 47.6 and 21.4 mg/kg, respectively. However, subcutaneously injected apomorphine hydrochloride (0.1-100 mg/kg), digitoxin (0.5-1.0 mg/kg) and orally administered emetine dihydrochloride (10-80 mg/kg) did not induce the vomiting. Chlorpromazine and promethazine decreased the emetic effect of nicotine, veratrine and copper sulfate, but scopolamine hydrobromide was not effective. These results indicate that the Suncus murinus is sensitive to various emetic and antiemetic drugs and can be used as a new experimental animal model for the emesis. Emetic behavior of suncus was discussed in comparison with other animals.
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PMID:Suncus murinus: a new experimental model in emesis research. 360 Jan 92

In unanesthetized cats the emetic action of an injection of nicotine into the cerebral ventricle through chronically implanted cannulae was investigated. Nicotine injected in doses of 0.02-1.0 mg produced dose-dependent vomiting, which was abolished after ablation of the area postrema. However, copper sulfate given intragastrically evoked vomiting in cats with an ablated area postrema. The emetic response to intracerebroventricular (ICV) nicotine as well as the vomiting produced by intragastric copper sulfate was depressed or abolished in cats pretreated with ICV reserpine. On the other hand, the emetic response to ICV nicotine and to intragastric copper sulfate was virtually unchanged in cats pretreated with ICV 6-hydroxydopamine and 5,6-dihydroxytryptamine. The duration of vomiting produced by intragastric copper sulfate, but not that of ICV nicotine, was potentiated in cats pretreated with hemicholinium-3. Ganglionic blocking agents, mecamylamine and hexamethonium, injected ICV prevented the vomiting elicited by ICV nicotine. On the other hand, selected anti-muscarinic drugs, alpha and beta adrenergic receptor antagonists, dopamine antagonists, antihistamines and a 5-hydroxytryptamine antagonist all injected into the cerebral ventricle had virtually no effect on the vomiting induced by ICV nicotine. It is postulated that nicotine evokes vomiting by its action on nicotinic receptors within the area postrema but not on catecholaminergic or serotonergic neurones. Finally, acetylcholine could also be involved in the inhibition of the complex mechanisms underlying the central regulation of vomiting.
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PMID:Further studies on nicotine-induced emesis: nicotinic mediation in area postrema. 360 20

In five conscious dogs prepared with a gastric cannula and platinum monopolar electrodes in the antrum, duodenum, and jejunum, the effect of dopamine or copper sulfate on the myoelectric activity was studied. During phase I of interdigestive myoelectric activity, retching, and/or vomiting occurred in 1.6 +/- 0.2 (mean +/- SE) min after intravenous bolus injection of dopamine (50 micrograms/kg) or in 8.7 +/- 1.8 min after intragastric administration of copper sulfate (2%, 50 mg). Immediately prior to the retching and/or vomiting act, a group of disordered myoelectric activities occurred, including retrograde-moving trains of spike activity starting from the jejunum and the subsequent tachyarrhythmia in the antrum. These motility changes also occurred in the two anesthetized dogs so studied. Both the retching and/or vomiting act and the abnormal myoelectric activity which were induced by dopamine and by copper sulfate were prevented by intravenous administration of a peripheral dopamine blocker, domperidone, 5 mg, in 100% and 70%, respectively. Although domperidone could not prevent the retching and/or vomiting induced by copper sulfate in three of 10 experiments, it delayed the onset of vomiting from 8.7 +/- 1.8 to 14.5 +/- 5.3 min. A possible role of peripheral dopamine receptor on the motility disorders associated with retching and/or vomiting has been suggested.
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PMID:Studies on mechanism of retching and vomiting in dogs. Effect of peripheral dopamine blocker on myoelectric changes in antrum and upper small intestine. 396 72

1. In unanaesthetized dogs, the emetic action of histamine was studied after its injection into the cerebral venricles through chronically implanted cannulae in order to elucidate the role of the chemoreceptor trigger zone (CT-zone), situated in the area postrema, for this emesis.2. On injection into the lateral cerebral ventricle, about 10 times larger doses of histamine (3 mg) were required regularly to produce emesis, and it occurred after a longer latency than on injection into the fourth ventricle. This is in accord with an action of histamine on the CT-zone.3. After bilateral ablation of the CT-zone, intraventricular injections of histamine no longer produced emesis even when injected in doses which were three to four times greater than those which regularly elicited vomiting in dogs with intact CT-zone. The emesis produced in dogs by intraventricular injections of histamine is thus fully accounted for by an action on the CT-zone.4. Injections of chlorpromazine intramuscularly or of the two antihistamines cyclizine and mepyramine, either intramuscularly or into the lateral ventricle, prevented the emesis caused by histamine injected into the lateral ventricle. This protective action of the antihistamines-which did not extend to the emesis produced by oral copper sulphate-suggests the presence of histaminergic receptors in the CT-zone.
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PMID:Role of the chemoreceptor trigger zone in histamine-induced emesis. 438 55

Cholera is a disease state caused by the Vibrio cholerae. The vibrios remain in the gut lumen, and the disease is atypically afebrile. The main symptom is a profuse isotonic diarrhea of rice-water character with an output rate of as much as 1 liter/hour. Early signs in the untreated patient are skeletal muscle cramps (presumably due to electrolyte loss) and vomiting. Mortality rate in untreated cases may be as high as 80%, and in treated cases, 20%. The U.S. Navy method of treating chlera has reduced the mortality rate to zero in the uncomplicated cases. U.S. Navy scientists have demonstrated that the cholera stool is remarkably constant from patient to patient and throughout the course of the disease. The simplicity of the Navy method for treating cholera makes it well suited for use in epidemics in populations with no experience in cholera. The method measures plasma specific gravity by the copper sulfate method. The Navy scientists found that there is a sodium transport inhibitor in cholera stools, and that there is decreased sodium transport from the gut lumen to plasma in the acute phase of cholera. Unlike other forms of shock, the mesenteric circulation in cholera must continue as there is a danger of loss of protein-free plasma, eventually leading to death. Tetracycline and other antibiotics have been shown to halve the course of the disease and fluid requirements for its therapy.
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PMID:Cholera in the perspective of 1966. 592 97

Postcoital contraceptives, the so-called "morning after pill," are agents used as emergency treatment to prevent pregnancy after unprotected intercourse or contraceptive accidents. In the 1960s and early 1970s high doses of estrogens were used in 5-day courses such as diethylstilbestrol 25-50 mg a day or ethinyl estradiol 0.5-5 mg a day begun within 72 hours after coitus. Although effective, a considerable drawback of the associated nausea and vomiting as well as an increased risk of menstrual disturbance during the treatment cycle. Norgestrel alone in various dosages has been used postcoitally. Quingestanol has been used as a continuing postcoital agent in Latin America but proved unacceptable owing to nausea and irregular bleeding. In China "visiting pills" have been devised containing anordrin. In the West regimens of this sort have been superseded by the Yuzpe treatment of 100 mcg ethinylestradiol and 0.5 mg levonorgestrel initially, repeated after precisely 12 hours. The treatment must be initiated within 72 hours of exposure. Postcoital contraceptives act by combinations of mechanisms--the function of the corpus luteum is disrupted, tubal motility may be affected, and changes in endometrial biochemistry prevent ovoimplantation. In a multicenter trial involving 602 women Yuzpe reported a pregnancy rate of 1.6%. Other workers show comparable figures of 0-3%. The primary side effects of the current hormonal method are nausea, which occurs in 61% of cases, and vomiting, 20% of cases. Both are mild and of short duration. All postcoital methods carry a risk of ectopic pregnancy should the treatment fail. 3 ectopic pregnancies were recorded with diethylstilbestrol and 1 recently with the Yuzpe regimen. There have been no reports of thromboembolic complications. If a hormonal form of postcoital treatment fails, the theoretical possibility of the pregnancy being harmed cannot be ruled out. The patient needs to be counseled about this, and careful records should be kept. Also important is the taking of an accurate menstrual and coital history to exclude exposures earlier in the menstrual cycle. Lippes and coworkers showed the efficacy of copper IUDs as postcoital agents. These can be used up to 5 days from intercourse. An IUD is preferred if hormones are contraindictated, if exposure was more than 72 hours beforehand, if the woman desires the most effective method, and if she wants the IUD for longterm contraception. Postcoital contraception, however defined, raises ethical questions. Postcoital methods could be classed as contraceptive rather than abortive within the maximum period (defined by medical scientific consensus) that may elapse between intercourse and nidation.
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PMID:Postcoital contraception. 613 82

Seventeen patients with bile duct calculi were treated alternately with a preparation of glycerol octanoate and a bile salt-EDTA solution via a nasobiliary tube. Of 14 patients (group I), it was necessary to operate on four immediately after irrigation therapy, success resulted from this conservative therapy in eight (57%) cases and two were unchanged. Laboratory investigations showed a decrease in zinc and copper concentrations in the serum. Of the patients 50-60% suffered from vomiting and diarrhea. For three patients (group II), there was an interval of 6-26 days between the end of the therapy and operation. Histological findings in the patients in group I and II subjected to operation included acute ulcerative and chronic inflammation in gallbladder and common bile duct walls. Since the alterations were of minor degree in four of the seven patients who subsequently underwent surgery the risk of irrigation therapy seems to be acceptable.
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PMID:Biochemical and morphological investigations of the toxicity of a Capmul preparation and a bile salt-EDTA solution in patients with bile duct stones. 642 34

Twelve taste repellents and 3 oral emetics were tested. The taste repellents were capsaicin, capsicum, oleoresin, sucrose octaacetate, quinine tonic, quassia wood extract, vanillamide, horseradish extract, caffeine, pepperoni enhancer, acorn extract, and commercially available bitter and hot flavors. The emetics tested were: antimony potassium tartrate, apomorphine, and copper sulfate. Intake of a 20% sucrose solution by Beagles was significantly depressed by addition of vanillamide at concentrations greater than 0.001%, by capsicum and capsaicin at concentrations greater than 0.01%, and by horseradish extract, pepperoni enhancer, and a commercially available hot flavor at concentrations greater than 0.1%. Antimony potassium tartrate, when added to the 20% sucrose solution at a concentration of 0.1%, produced emesis as did apomorphine at a concentration of 0.005% and copper sulfate at 1%. When the emetic antimony potassium tartrate was combined with vanillamide in a 20% sucrose solution, intake was reduced to less than 20 ml, and vomiting occurred within 15 minutes. Capsaicin (0.02%) inhibited intake of ethylene glycol to less than the lethal dose in 5 dogs tested. Incorporation of such taste repellents and/or emetics into potentially poisonous substances would reduce accidental poisoning of animals and children.
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PMID:Use of taste repellants and emetics to prevent accidental poisoning of dogs. 647 61

Strychnine toxicosis is characterized by inducible tetanic seizures and metaldehyde poisoning by fine fasciculations progressing to generalized tremors and seizures. Intoxication with 1080 causes seizures, random running movements, vomiting, defecation, urination, acidosis and hyperglycemia. Intoxication with rodenticides causing coagulopathy is characterized by hemorrhage into body cavities but not necessarily external hemorrhage. Anticholinesterase insecticides cause salivation, urination and defecation, while chlorinated hydrocarbon insecticides cause CNS disturbances. Ethylene glycol intoxication results in ataxia, depression, coma, vomiting and tachypnea, followed by acute renal failure. Urea poisoning causes bloat and CNS signs in cattle. Monensin intoxication in horses lasts several days and causes stiffness, colic, uneasiness and recumbency. Salt poisoning results in depression, seizures and hypernatremia. Lead poisoning is associated with central and peripheral nervous system signs, as well as increased numbers of nucleated RBC and basophilic stippling of RBC. Arsenic poisoning results in GI pain, diarrhea, weakness and death. Copper toxicosis in sheep is manifested by hemolytic anemia, hemoglobinemia and hemoglobinuria. Plants that may intoxicate domestic animals include sorghum, greasewood, halogeton, water hemlock, Japanese yew, larkspur, lupine, milk-weed, philodendron, oleander, castor bean and precatory bean.
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PMID:Practical toxicologic diagnosis. 649 3

Three of four family members reported recurrent episodes of gastrointestinal illness while residing in a house in a small northwestern Vermont village. The father and two daughters repeatedly experienced episodes of emesis and abdominal pain after drinking water drawn from their kitchen faucet. One early-morning water sample taken from the family household contained a copper level of 7.8 mg/L, which is above the standard for drinking water (1.0 mg/L). Values for the second daughter's copper in hair analysis (1,200 micrograms/g) and copper in nail analysis (100 micrograms/g) were elevated (normal range 11 to 53 micrograms/g). The household was at the end of a 3/4-in (19.05-mm) copper main, and it is suspected that copper levels increased in water when the water remained stagnant in the main. All symptoms of the family resolved when they stopped drinking water in their home. This is the first report of copper-induced gastrointestinal illness attributable to a public supply of drinking water.
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PMID:Drinking-water-induced copper intoxication in a Vermont family. 650 31


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