Gene/Protein Disease Symptom Drug Enzyme Compound
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Query: UMLS:C0013395 (dyspepsia)
 4,879 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

In a 28-day non-blinded study of 1071 patients with functional dyspeptic symptoms in a general practice setting, 666 presented with mainly typical symptoms of functional dyspepsia and received 5 mg cisapride three times daily, while 405 with predominating symptoms indicative of gastroesophageal reflux received 10 mg cisapride three times daily. On the basis of an anamnestic risk factor analysis for organic lesions, 'low-risk' patients were to be treated directly with cisapride, while for 'high-risk' patients a more thorough gastrointestinal examination was recommended before starting cisapride. Of patients in the dyspepsia group 75% reported a good or excellent response; the corresponding rate was 80% in the reflux group. Low-risk patients in both groups tended to respond better than high-risk patients (mean difference, 11%). Patients and investigators reached identical assessments of response. Concomitant antacids, calcium antagonists, beta-blockers and sedatives did not affect the results, but concomitant NSAIDs reduced the mean improvement rate by 14% (p < 0.01). Adverse effects such as abdominal cramps and loose stools were uncommon (< or = 3.4%).
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PMID:Risk factors, co-medication, and concomitant diseases: their influence on the outcome of therapy with cisapride. 851 57

The authors encountered 22 patients in whom a skin biopsy showed atypical lymphoid hyperplasia and in whom a subsequent drug history showed indigestion of one or more agents before lesional onset. In 13 patients, the biopsy had been performed to rule out a diagnosis of malignant lymphoma, whereas the other nine the clinical impression was that of a drug eruption. Among the more frequently prescribed agents were calcium-channel blockers, angiotensin-converting enzyme (ACE) inhibitors, antidepressants, antihistamines, beta-blockers, benzodiazepines and lipid-lowering agents, all of which are either known to perturb lymphocyte function or have been implicated as a cause of pseudolymphomata. Twelve of the patients were on two or more of these drugs. The effect of drug modulation on the clinical course was assessed. The clinical presentations were as one or more erythematous plaques or multiple infiltrative papules, or as solitary nodules. The patient had been on one or more of the aforementioned drugs from 2 weeks to 5 years before developing the lesions. Resolution of the eruptions occurred in 17 patients within 1 to 32 weeks (mean, 7 weeks) of discontinuing the medication. Five additional patients had complete excision of solitary lesions without recurrence. A history of atopy, autoimmune disease, or previous carcinoma was elicited in five patients. All biopsy specimens showed atypical lymphoid infiltrates, which assumed one or more of the following patterns: mycosis fungoides (MF)-like, a lymphomatoid vascular reaction, lymphocytoma cutis and follicular mucinosis. Based on the histopathology of the biopsied lesions and the clinical course being one of lesional resolution after cessation of drug therapy or excision of a solitary lesion without subsequent recurrence, a diagnosis of drug-associated lymphomatoid hypersensitivity was established in all specimens. A diagnosis of drug-associated pseudolymphoma should be excluded before a diagnosis of cutaneous lymphoma is rendered, and should be considered if the patient is on a drug known to alter lymphocyte function, particularly in the setting of systemic immune dysregulation or multidrug therapy where agent may act synergistically or cumulatively to alter lymphoid function. The authors postulate that the drug may promote an aberrant immune response to an antigen that may be the drug itself or some other stimulus. A skin biopsy may be particularly helpful, as the lesions of drug-associated pseudolymphoma have a morphology distinctive from malignant lymphoma.
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PMID:Drug-induced immune dysregulation as a cause of atypical cutaneous lymphoid infiltrates: a hypothesis. 861 53

Alendronate is an aminobisphosphonate which appears to attenuate, rather than completely inhibiting bone turnover, by suppressing the activity of osteoclasts. Clinical trials have established that 10 mg/day orally administered alendronate is the optimum dosage. Despite its poor bioavailability after oral administration, alendronate is highly effective at preventing bone loss associated with the absence of endogenous estrogen. A sustained increase in bone mass was observed during alendronate therapy without accelerated loss after withdrawal of the drug. Increased bone mass was associated with a reduction in the risk and rate of occurrence of vertebral fractures. A recent study demonstrated a 47% reduction in the risk of developing new radiographic vertebral fractures over 3 years in women with low bone mass and pre-existing vertebral fractures. There have been few direct comparisons in clinical trials. However, when compared with calcium or low dosages of salmon calcitonin (salcatonin) therapy in women with postmenopausal osteoporosis, alendronate induced a sustained increase in bone mass during therapy that was not seen with the comparator. In clinical trials alendronate was generally well tolerated when taken as recommended. Adverse events tended to be transient and usually associated with the upper gastrointestinal tract; the most common events included abdominal pain, nausea, dyspepsia, constipation and diarrhoea, which are also common with other bisphosphonates. Of potential concern are the small number of reports of patients developing oesophageal ulceration; however, this adverse event was attributed to noncompliance with the manufacturer's recommendations for administration of the drug. In addition, alendronate has not been associated with osteomalacia. Studies are still required to establish the long term efficacy of alendronate, particularly with regard to other available therapies. Although estrogen replacement therapy is generally considered the treatment of choice for the management of postmenopausal osteoporosis, many women are unable or unwilling to receive estrogens on a long term basis. Thus, alendronate, with its demonstrated beneficial effects and its good tolerability profile (when taken as recommended), is a promising alternative treatment option for the management of postmenopausal osteoporosis.
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PMID:Alendronate. A review of its pharmacological properties and therapeutic efficacy in postmenopausal osteoporosis. 907 43

Sildenafil, a selective inhibitor of cyclic guanosine monophosphate (cGMP)-specific phosphodiesterase type 5 (PDE5), is a well-tolerated and highly effective treatment for erectile dysfunction. The mechanism of action of sildenafil depends on activation of the nitric oxide (NO)-cGMP pathway during sexual stimulation, which results in corpus cavernosal smooth muscle relaxation and penile erection. Endogenously derived NO is also involved in blood pressure regulation through its effect on basal vascular tone, which is mediated by cGMP levels. Organic nitrates and NO donors exert their therapeutic effects on blood pressure and vascular smooth muscle by the same mechanism as endogenous NO. Since both sildenafil and organic nitrates exert their pharmacologic effects via increases in cGMP concentrations, a double-blind, placebo-controlled, crossover study was undertaken to investigate the effects of sildenafil coadministered with glyceryl trinitrate on blood pressure and heart rate in healthy male subjects. The hemodynamic effects of sildenafil were also evaluated in a second placebo-controlled crossover study in men with hypertension who were taking the calcium antagonist amlodipine, which has a mechanism of action that does not involve the cGMP pathway. In the first crossover study, subjects were treated with oral sildenafil (25 mg, 3 times a day for 4 days) or placebo and then challenged on day 4 with a 40-minute, stepwise, intravenous infusion of glyceryl trinitrate (0.5 mg/mL in 5% dextrose at an initial infusion rate of 2.5 microg/min and doubling every 5 minutes to a maximum rate of 40 microg/min) 1 hour after taking sildenafil or placebo. On day 5, subjects received a sublingual glyceryl trinitrate tablet (500 microg) 1 hour after taking 25 mg of sildenafil or placebo. During sildenafil treatment, the subjects were significantly less tolerant of intravenously administered glyceryl trinitrate than during placebo treatment, based on the occurrence of a >25 mm Hg decrease in blood pressure or the incidence of symptomatic hypotension (p <0.01). When a sublingual glyceryl trinitrate tablet was administered on day 5, a 4-fold greater decrease in systolic blood pressure was observed for the subjects during the sildenafil treatment period than during the placebo treatment period. The changes in heart rate were negligible during both glyceryl trinitrate challenges. In conclusion, sildenafil potentiated the hypotensive effects of glyceryl trinitrate, an organic nitrate. Thus, sildenafil administration to patients who are using organic nitrates, either regularly and/or intermittently, in any form is contraindicated. In the second crossover study, men with hypertension, who were taking 5 or 10 mg/day of amlodipine, received a single oral dose of 100 mg sildenafil or placebo. Coadministration of sildenafil did not significantly affect the pharmacokinetics of amlodipine. In the 4 hours after dosing, differences in the mean maximum change from baseline in supine systolic and diastolic blood pressures between the sildenafil plus amlodipine and the placebo plus amlodipine treatment periods were -8 mm Hg and -7 mm Hg, respectively (p < or =0.002). The mean maximum supine heart rate increased 2.1 beats/min during sildenafil plus amlodipine treatment and decreased 1.5 beats/min during placebo plus amlodipine treatment (p <0.02). The adverse events in this study were predominantly mild or moderate and did not cause discontinuation of treatment. Adverse events considered to be related to sildenafil treatment included headache, nausea, and dyspepsia. In patients with hypertension who were taking amlodipine therapy, sildenafil produced additive, but not synergistic, reductions in blood pressure. The difference in the mean maximum change from baseline in blood pressure between sildenafil plus amlodipine and placebo plus amlodipine was comparable to the decrease in blood pressure reported for healthy men taking sildenafil alone. (ABSTRACT TRUNCATED)
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PMID:Sildenafil citrate and blood-pressure-lowering drugs: results of drug interaction studies with an organic nitrate and a calcium antagonist. 1007 39

Antacids are commonly used self-prescribed medications. They consist of calcium carbonate and magnesium and aluminum salts in various compounds or combinations. The effect of antacids on the stomach is due to partial neutralisation of gastric hydrochloric acid and inhibition of the proteolytic enzyme, pepsin. Each cation salt has its own pharmacological characteristics that are important for determination of which product can be used for certain indications. Antacids have been used for duodenal and gastric ulcers, stress gastritis, gastro-oesophageal reflux disease, pancreatic insufficiency, non-ulcer dyspepsia, bile acid mediated diarrhoea, biliary reflux, constipation, osteoporosis, urinary alkalinisation and chronic renal failure as a dietary phosphate binder. The development of histamine H2-receptor antagonists and proton pump inhibitors has significantly reduced usage for duodenal and gastric ulcers and gastro-oesophageal reflux disease. However, antacids can still be useful for stress gastritis and non-ulcer dyspepsia. The recent release of proprietary H2 antagonists has likely further reduced antacid use for non-ulcer dyspepsia. Other indications are still valid but represent minor uses. Antacid drug interactions are well noted, but can be avoided by rescheduling medication administration times. This can be inconvenient and discourage compliance with other medications. All antacids can produce drug interactions by changing gastric pH, thus altering drug dissolution of dosage forms, reduction of gastric acid hydrolysis of drugs, or alter drug elimination by changing urinary pH. Most antacids, except sodium bicarbonate, may decrease drug absorption by adsorption or chelation of other drugs. Most adverse effects from antacids are minor with periodic use of small amounts. However, when large doses are taken for long periods of time, significant adverse effects may occur especially patients with underlying diseases such as chronic renal failure. These adverse effects can be reduced by monitoring of electrolyte status and avoiding aluminum-containing antacids to bind dietary phosphate in chronic renal failure. Antacids, although effective for discussed indications of duodenal and gastric ulcer and gastro-oesophageal reflux disease, have been replaced by newer, more effective agents that are more palatable to patients. Antacids are likely to continue to be used for non-ulcer dyspepsia, minor episodes of heartburn (gastro-oesophageal reflux disease) and other clear indications. Although their wide-spread use may decline, these drugs will still be used, and clinicians should be aware of their potential drug interactions and adverse effects.
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PMID:Antacids revisited: a review of their clinical pharmacology and recommended therapeutic use. 1040 Apr 1

The best procedure for the treatment of morbid obesity has not yet been defined. Biliopancreatic diversion is one of the techniques available, but its results have not been sufficiently documented and the addition of a subtotal gastrectomy to the diversion so as to avoid leaving a blind non-functioning stomach, is still questionable. The purpose of this paper is to report our experience with our first 149 consecutive patients who were treated by biliopancreatic diversion with subtotal gastrectomy for morbid obesity. Operative mortality was 3% and morbidity 12%. The weight loss was marked during the first 6 months and decreased during the following 12 months. The weight stabilized at 2 years and there was subsequently a small increase. In only two out of 48 cases was the weight loss less than 25% of the initial weight at 2 years. The undesirable side-effects were diarrhea in 6%, vomiting in 9% and dyspepsia in 4%. The intervention leads to a malabsorption of carotene, iron, albumin and calcium. Except for carotene the deficiencies were corrected by oral supplement. In two patients, with resistant deficiencies, the diversion was reversed. Eighty-eight percent of the patients are satisfied with this intervention. At 2 years, 70% have reached their weight loss objective without any major side-effects or nutritional deficiencies, but in 14% the outcome of the procedure must be considered unsatisfactory. Biliopancreatic diversion with subtotal gastrectomy is a major operation, but it gives encouraging results so far.
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PMID:Biliopancreatic Diversion with Gastrectomy as Surgical Treatment of Morbid Obesity. 1077 39

Primary hyperparathyroidism is the most common cause of hypercalcemia and 80-85% of the patients have parathyroid tumors. The purpose of this retrospective review was to analyse whether differences exist between patients with parathyroid tumors treated in the 1980s and 1990s. Between 1980-1997, 253 patients underwent initial surgical neck exploration for hyperfunctioning parathyroid tumors. Renal (polyuria, nocturia, renal colic due to lithiasis), rheumatologic (bone and joint pain), neurological (fatigue, memory loss, depression) and gastrointestinal (dyspepsia, anorexia, nausea) symptoms were recorded and main biochemical parameters were measured. In all patients one or more preoperative localization procedures were carried out prior to successful parathyroidectomy, and the confirmation of imaging findings was obtained after surgery. The patients were divided in two groups. Group A: 121 (47.8%) patients who underwent surgery from 1980-1989; Group B: 132 (52.2%) patients in whom parathyroidectomy was performed from 1990-1997. There were no differences (p=NS) between the two groups in average age, preoperative serum creatinine and intact-PTH levels. Symptoms were most common in Group A, and pre-operative serum calcium levels were significantly lower in Group B. Ultrasonography (n=191) sensitivity did not improve significantly (82.8% vs 82.9%), but positive predictive value (PPV) was higher (89.8% vs 96.0%). CT-scan (n=73) sensitivity was 79.2% and 82.6%, and PPV was 95.0% and 100% in Groups A and B, respectively. 201Tl/99mTc subtraction scintigraphy (n=111, Group A) was 84.6% sensitive (PPV=92.6%) whereas 99mTc-sestamibi scanning (n=90, Group B) was 85.1% sensitive (PPV=96.1%). In conclusion, the clinical features of parathyroid tumors has changed in the nineties and increasing asymptomatic pHPT rate has been found. Although sensitivity and PPV of preoperative localization procedures has improved moderately, at present noninvasive techniques may offer excellent results and should be used in all patients with suspected parathyroid tumors.
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PMID:Tumors of the parathyroid glands. Changes in clinical features and in noninvasive localization studies sensitivity. 1084 Sep 29

Information on the use of drugs during pregnancy is scarce and rather anecdotal. Careful consideration of the benefit to the mother and the risk to the fetus is required when prescribing drugs during pregnancy. The aim of this study was to gain knowledge on this issue in western Nepal. 2156 prescriptions of pregnant women were collected at random from the antenatal care (ANC) in obstetrics out-patient department (OPD) at Manipal Teaching Hospital (MTH), Nepal and analyzed for this study. The mean maternal age and hemoglobin concentration were 25 years and 12.21 g/dl, respectively. Twenty-three percent women attended obstetric OPD due to maternal disorders other than routine ANC (77%). Problem oriented drug use was due to nausea/vomiting (4.7%), dyspepsia (3.1%), and per vaginal spotting/bleeding (3.4%), mainly. Most of the women got 2-3 drugs and commonly included nutritional supplementation and tetanus toxoid. The average number of drugs/prescription was 2.00, 15.37% and 64.8% drugs were prescribed by generic name and as fixed dose combinations, respectively. The most commonly prescribed drugs were nutritional supplements like iron, folate, calcium, vitamins (72.8%), followed by tetanus toxoid (12.4%), gastrointestinals (5%), antimicrobials (4.6%), etc. Though, the selection of drugs was rational in most of the cases, some anomalies were observed and discussed with the clinicians. Our data reflect the general extent and prescribing pattern for those Nepalese pregnant women attending hospital in western Nepal.
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PMID:A study of drug use during pregnancy in a teaching hospital in western Nepal. 1273 75

We used data from a randomized placebo-controlled clinical trial to examine the relationship between Helicobacter pylori and reflux symptoms in nonulcer dyspepsia patients randomly assigned anti-Helicobacter pylori triple therapy alone, calcium carbonate alone, or in combination with triple therapy, tetracycline, or placebo. We compared risk differences for posttreatment Helicobacter pylori status and increased reflux symptoms from crude, multivariable and stratified multivariable analyses. In crude analyses, 54% of subjects without Helicobacter pylori after-treatment reported an increase in reflux compared to 41% of those with persistent infection (risk difference = 13%; P = 0.07). Only subjects with multifocal atrophic gastritis assigned to calcium carbonate reported an increase in reflux symptoms more frequently when Helicobacter pylori was absent versus when it persisted (risk difference = 52%; P = 0.0001). Therefore, the interaction of calcium carbonate use, chronic multifocal atrophic gastritis, and the absence of Helicobacter pylori may increase reflux symptoms.
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PMID:Increased reflux symptoms after calcium carbonate supplementation and successful anti-Helicobacter pylori treatment. 1292 41

The great majority of patients with duodenal ulcer (DU) given a single oral dose (50 mg) of dicetel (pinaverium bromide)--a selective blocker of calcium channels--showed optimization of vegetative reactivity and vegetative support of physical and mental activities. This contributes to relief of psychovegetative syndrome of the modulation of dysfunctions of proximal gastrointestinal tract (GIT). The addition of dicetel to combined treatment of PH shortened healing of DU, relieved pain, stopped gastric and intestinal dyspepsia, corrected motor-tonic defects of the proximal GIT caused by dysfunction of different links of the regulatory-adaptive system.
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PMID:[Effects of dicetel on gastrointestinal motility and vegetative dysfunction in patients with duodenal ulcer]. 1452 Sep 42


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