Gene/Protein Disease Symptom Drug Enzyme Compound
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Query: UMLS:C0012833 (dizziness)
 9,689 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

Thirty-eight obese patients, resistant to conventional diet therapy, agreed to consume a 1.09 MJ (260 kcal)/day semi-synthetic diet consisting of 25 g egg albumin, 40 g oligosaccharides, vitamins and minerals, and were seen weekly as outpatients for eight weeks. At the beginning, the semi-synthetic diet was given with either the anorectic drug, mazindol (2 mg/day) or a placebo for four weeks and then changed over for the remaining four weeks; the study being conducted on a double-blind basis. The final treatment was a 4.2 MJ (1000 KCAL) conventional diet for a further four weeks without drug or placebo. Twenty-five patients completed the first eight weeks and 21 patients the final four weeks of the trial. The total mean weight losses were as follows: week 4, 9.3 kg; week 8, 13.7 kg; week 12, 12.2 kg. There was no significant difference in weight loss between mazindol treatment and placebo but the former group reported feeling less hungry. The chief side-effects observed were dizziness, nausea, dry mouth, insomnia and depression which were more frequent with mazindol. Six patients had to stop mazindol because of side-effects, but were able to continue the diet alone. It is concluded that a semi-synthetic diet containing 1.09 MJ (260 kcal) daily can be successfully employed in the treatment of obese outpatients, and is a practical therapeutic alternative to admission to hospital. There is no clinical advantage to be gained by the additional use of the anorectic drug, mazindol.
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PMID:A double-blind trial of mazindol using a very low calorie formula diet. 36 31

Two double-blind, crossover trials comparing the antiemetic effectiveness of nabilone, a new synthetic cannabinoid, with that of prochlorperazine were conducted in patients with severe nausea and vomiting associated with anticancer chemotherapy. Of 113 patients evaluated, 90 (80 per cent) responded to nabilone therapy, whereas only 36 (32 per cent) responded to prochlorperazine (P less than 0.001). Complete relief of symptoms was infrequent, occurring only in nine patients (8 per cent) given nabilone. When both drugs were compared, both nausea (P less than 0.01) and vomiting episodes (P less than 0.001) were significantly lower in patients given nabilone. Moreover, patients clearly favored nabilone for continued use (P less than 0.001). Predominant side effects noted by patients were similar for both agents and included somnolence, dry mouth and dizziness but were about twice as frequent and more often severe in patients receiving nabilone. In addition, four patients (3 per cent) taking nabilone had side effects (hallucinations in three, hypotension in one) that required medical attention. Euphoria associated with nabilone was infrequent (16 per cent) and mild.
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PMID:Superiority of nabilone over prochlorperazine as an antiemetic in patients receiving cancer chemotherapy. 37 88

About twenty-five years ago thymoleptics made their first appearance which were soon followed by a great number of pharmacological agents that allied a mood elevating activity to an anxiolytic effect. Mianserin, a novel tetracyclic antidepressant, has an antidepressive effect similar to that of its predecessors but without causing the following side-effects : dry mouth, constipation, intestinal atony, tachycardia, cardiac rhythm disorders, accommodation difficulties, intra-ocular hypertension, dizziness, bladder atony and urinary retention. Consquently, its use is particularly indicated for the treatment of those patients who did not react to other antidepressants of those who stopped treatment on account of side-effects. Mianserin may also be used with those patients suffering from glaucoma, urinary or prostatic disorders and cardiac disorders even when the patient is recovering from a recent heart infarction. Furthermore it is recommended for aged people, for patients in a bad general condition and for those who were in a confusioned state during treatment with tricyclic antidepressants.
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PMID:[Indications for mianserin in relation to its absence of side-effects (author's transl)]. 37 82

Rilmenidine is an oxazoline derivative with antihypertensive activity which was developed to enhance the dissociation between the hypotensive and adverse effect profile of centrally acting agents. Experimental studies have indicated that rilmenidine is selective for both alpha 2-adrenoceptors (v alpha 1) and newly discovered nonadrenergic imidazoline receptors in the brain and in the periphery. In experimental studies, rilmenidine differs from clonidine in that it is more selective for imidazoline receptors than for alpha 2-adrenoceptors; at equihypotensive doses, rilmenidine causes less bradycardia and reduction in cardiac output, less sedation, and little or no antinociceptive action compared to clonidine. The hypotensive effects of rilmenidine are antagonised by idazoxan and yohimbine, but idazoxan (imidazoline structure) is six times more potent than yohimbine (a selective alpha 2-antagonist). In isolated renal proximal tubule cells, where imidazoline binding has also been shown, rilmenidine inhibits reabsorption of sodium. Clinical studies comparing 1 mg rilmenidine with placebo demonstrated significant reductions in blood pressure (BP) (61% rilmenidine v 23% placebo normalized to 160/90 mm Hg). The reduction in BP was not associated with classical alpha 2 side effects such as dry mouth or daytime drowsiness. Compared with clonidine (0.15 to 0.3 mg), equihypotensive doses of rilmenidine (1 to 2 mg) induced two to three times less dry mouth, daytime drowsiness, and constipation; no orthostatic hypotension was reported. Methyldopa (0.5 to 1 mg) v rilmenidine (1 to 2 mg) indicated a comparable reduction of BP with significantly less weakness, drowsiness, orthostatic dizziness, and dry mouth on rilmenidine; there was no evidence of the "clonidine withdrawal syndrome" on drug withdrawal.(ABSTRACT TRUNCATED AT 250 WORDS)
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PMID:Distinctive features of rilmenidine possibly related to its selectivity for imidazoline receptors. 135 Jul 32

This phase I study investigated flavone acetic acid (FAA) given as a 12-h intravenous infusion every 3 weeks in the absence of urinary alkalinisation. Cohorts of three patients were treated at doses of 7, 10 and 13 g/m2. One subject had colon cancer; 5, renal cancer; and 3, lung cancer. The Eastern Cooperative Oncology Group (ECOG) performance status was 0 in four patients, 1 in two subjects and 2 in three cases. The maximum tolerated dose was 13 g/m2. The dose-limiting toxicities were WHO grade 3 hypotension and grade 3 diarrhoea. Other toxicities included lethargy and dizziness, nausea, temperature fluctuation, myalgia and dry mouth, but no significant myelosuppression was encountered. One patient receiving 10 g/m2 for renal cancer showed a partial response that lasted for 3 months and included the resolution of pulmonary and cutaneous metastases. The pharmacokinetics showed large interpatient variability. At 12-16 h post-infusion, the plasma elimination profile entered a plateau phase, with frequent increases in concentration suggesting enterohepatic recycling. Neither peak FAA levels nor AUC values were dose-dependent at the doses studied. Peak plasma levels were 101-402 micrograms/ml and AUC (0-48 h) values were 75-470 mg ml-1 min. Plasma protein binding varied with total concentration. Two metabolites were detected in the plasma, and both also underwent apparent enterohepatic recycling. Repeat dosing resulted in decreases of up to 48% in peak levels and AUC values for FAA in three of six patients. Of the total FAA dose, 39%-77% was excreted in the urine as FAA or metabolites within 2 days. The dose recommended for further phase II studies is 10 g/m2.
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PMID:A phase I and pharmacokinetic study of 12-h infusion of flavone acetic acid. 155 Nov 73

Forty-two surgical patients were given epidural tramadol for control of postoperative pain. They were randomly assigned to three groups: group 1 (n = 15), in which 25 mg of tramadol were given; group 2 (n = 13), in which 50 mg of tramadol were given; and group 3 (n = 14), in which 75 mg of tramadol were given. When the patients complained of wound pain, epidural tramadol was given. Heart rate, blood pressure, respiratory rate, oxygen saturation (SpO2), sedation scale, motor blockade, verbal rating scale, subjective grading, and visual analogue pain scale (VAPS) were measured and recorded before the tramadol administration, at 5 and 15 min, and at 1, 2, 4, and 8 h after the tramadol administration. Only 26.6% of the patients in group 1 had significant relief of pain. The rest of them needed at least one incremental dose of 25 mg of tramadol. The baseline VAPS of the patients in group 2 was 8.9 +/- 2.0. It became 5.46 +/- 3.0 (p greater than 0.05) 15 min after tramadol was given, and dropped further to 1.9 +/- 1.8 (p greater than 0.05) 2 h later. The average duration of pain relief was 12.0 +/- 5.9 h. In group 3, the initial VAPS was 8.14 +/- 1.9. It decreased to 4.28 +/- 1.8 (p greater than 0.05) 15 min, and further dropped to 1.7 +/- 0.9 (p greater than 0.05) 2 h following tramadol administration. The average duration of pain relief was 11.3 +/- 4.8 h. The common side effects of tramadol such as dizziness, nausea, and dry mouth, were most frequently found in group 3.(ABSTRACT TRUNCATED AT 250 WORDS)
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PMID:Epidural tramadol for postoperative pain relief. 175 61

The efficacy and tolerability of the selective 5-HT reuptake inhibitor fluvoxamine were compared with the tricyclic dothiepin in 52 elderly (age greater than 64 years) hospital patients in a multi-centre double-blind randomised trial. Patients met DSM-III criteria for 'major depressive episode' and scored greater than 29 on the Montgomery Asberg Depression Rating Scale (MADRS) after a one-week placebo baseline. Active treatment was for six weeks. The dosage of both drugs was 50 mg nocte for three days, 100 mg nocte for the remainder of the first week, thereafter increasing to a maximum of 200 mg/day according to response/tolerance. MADRS scores improved by 63.5% with fluvoxamine and 60.0% with dothiepin; there were no significant differences between treatments at any assessment. Nausea, dizziness, headache, somnolence and constipation in both groups, plus dry mouth and asthenia in the dothiepin group were more frequent than single reports. Two patients in each group discontinued treatment owing to unwanted effects. There were no clinically significant changes in haematological, biochemical or cardiovascular parameters.
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PMID:A double-blind, randomised comparison of fluvoxamine with dothiepin in the treatment of depression in elderly patients. 181 Mar 58

Clomipramine is a newly marketed tricyclic antidepressant drug prescribed for obsessive-compulsive disorder (OCD). It selectively blocks neuronal uptake of serotonin. Clomipramine has been prescribed in Europe and Canada for 20 years in management of depression. Studies have now shown clomipramine to be effective in treating OCD. Dry mouth, visual disturbances, constipation, sexual dysfunction, somnolence, tremors, and dizziness are among the commonly reported side effects. Like other tricyclics, clomipramine exhibits a potential for cardiotoxicity, especially by impairing conduction and/or orthostasis. It also has the effect of lowering seizure threshold. Overdose risk is considerable. Careful medical supervision and adherence to prescribing guidelines are presumed to reduce medication risk factors. The outstanding benefit of this drug is its proved efficacy in the management of obsessive-compulsive disorder, as the first pharmacotherapy approved for this previously rather treatment-resistant condition.
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PMID:Clomipramine for obsessive-compulsive disorder: prescribing guidelines. 192 26

We carried out a four-week double-blind placebo-controlled study comparing remoxipride (n = 20) to chlorpromazine (n = 21) and placebo (n = 21) in the treatment of newly admitted schizophrenic patients with acute exacerbation. Chlorpromazine was found to be significantly better than remoxipride on the dropout rate due to inefficacy, Clinical Global Impression (CGI) of severity of illness and Brief Psychiatric Rating Scale (BPRS). Chlorpromazine tended to be better than placebo on the dropout rate related to inefficacy, Nurse's Global Impression (NGI) of severity and on the BPRS measures of positive symptoms (hallucinatory behaviour and thinking disturbance factor). We were unable to detect a difference between remoxipride and placebo except that remoxipride was better in patients who had previously responded well to neuroleptics. Both drugs induced significantly more parkinsonism than placebo, but differently so: chlorpromazine induced both types of parkinsonism hypo- and hyper-kinetic symptoms, whereas remoxipride induced hyperkinetic symptoms. Chlorpromazine caused more tachycardia, drowsiness, orthostatic dizziness, and dry mouth than the other two treatments, while patients on remoxipride suffered more from insomnia than those on the other two treatments.
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PMID:A placebo-controlled clinical trial of remoxipride and chlorpromazine in newly admitted schizophrenic patients with acute exacerbation. 197 69

Ketanserin is a 5-HT2 receptor antagonist without partial agonist properties which also possesses weak alpha 1-adrenoceptor antagonistic activity, which may explain its antihypertensive mechanism of action in patients with essential hypertension. It also inhibits the effects of serotonin on platelets in cardiovascular disease, inhibits vasoconstriction caused by the amine, and when administered intravenously improves some haemorheological indices in patients with ischaemic diseases. The antihypertensive effect of oral ketanserin 40 mg twice daily is comparable with that of total daily doses of metoprolol 200 mg, propranolol 160 mg, captopril 100 mg, enalapril 20 mg, hydrochlorothiazide 50 mg, or alpha-methyldopa 1000 mg and is achieved without adverse effect on plasma lipoproteins or carbohydrate metabolism in patients with concomitant diabetes mellitus. Evidence from prospective studies suggests a greater antihypertensive efficacy in the elderly than in younger patients. In patients with intermittent claudication, results have been inconsistent in small studies, while a large study showed no improvement in pain-free walking distance but fewer amputations compared to placebo. In Raynaud's phenomenon symptomatic improvement relative to placebo was achieved in larger trials. Its role in preventing atherosclerotic complications requires further investigation. Ketanserin is reasonably well tolerated, the frequency of adverse effects being comparable with that of other antihypertensive drugs in controlled trials. Dizziness, tiredness, oedema, dry mouth and weight gain are the most commonly reported effects. Ketanserin prolongs QT interval in a dose-related manner, and when given in certain predisposing circumstances ventricular arrhythmias and syncope may occur. Administered intravenously, ketanserin 10mg followed by an infusion of 2 to 4 mg/h controls moderate to severe pre- and postoperative hypertension in most patients, acting as a balanced vasodilator, lowering cardiac pre- and afterload. Although the arrhythmogenic potential of ketanserin in patients receiving potassium-depleting diuretics requires suitable precautions, it appears that its antihypertensive activity is suited to the elderly provided plasma potassium concentrations are normal at the start of treatment and are maintained within the normal range.
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PMID:Ketanserin. A review of its pharmacodynamic and pharmacokinetic properties, and therapeutic potential in hypertension and peripheral vascular disease. 207 1


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