Gene/Protein Disease Symptom Drug Enzyme Compound
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Query: UMLS:C0022104 (irritable bowel syndrome)
 8,033 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

Compound F-461, 3-diethylamino-2,2-dimethylpropyl 5-(p-nitrophenyl)-2-furoate hydrochloride, was evaluated pharmacologically and was found to exert non-anticholinergic smooth muscle spasmolytic activity along the gastrointestinal tract of animals. F-461 was additionally discovered to inhibit gastric acid secretion and to prevent cold + restraint stress-induced ulcers. Local anesthesia, both surface and infiltration, was also elicited by F-461. The pharmacologic properties of F-461, as revealed in this study, are indicative of potential usefulness of this drug in the therapy of spastic colon and/or peptic ulcers.
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PMID:F-461, 3-diethylamino-2,2-dimethylpropyl 5-(p-nitrophenyl)-2-furoate hydrochloride, a new non-anticholinergic spasmolytic and gastric acid inhibitor. 98 68

Cross-cultural differences in physical and emotional responses to stressors are reported in this study. Among professionals (e.g., managers, supervisors), the incidence of stress-related disorders can have remarkable impact upon organizational performance as well as personal well-being. In order to study the relationship of nationality and gender to stress-related disorders, 148 American and 180 Brazilian professionals completed a questionnaire asking them to identify their unique responses to occupational stressors. Statistical analysis indicated that significant differences exist between the responses based upon both nationality and gender. Specifically, Americans reported a significantly higher incidence of allergies and irritable bowel syndrome, while Brazilians reported a higher incidence of Raynaud's syndrome (major manifestations are cold hands/feet). The males reported a higher incidence of high blood pressure and TMJ dysfunction/bruxism (a major manifestation is teeth grinding), while the females reported a higher incidence of tension headaches. The results are discussed in comparison to other cross-cultural and cross-gender studies with similar outcomes.
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PMID:Incidence of stress-related disorders among American and Brazilian men and women. 224 7

Patterns of oesophageal motility were recorded in 17 healthy volunteers and 12 patients with the irritable bowel syndrome. Recordings were taken at rest and under stress by hyperventilation, a dichotic hearing challenge and a cold pressor test. In healthy volunteers the dichotic hearing challenge was associated with a significant increase in the mean amplitude of oesophageal peristalsis from 69.9 mmHg to 82.4 mmHg (p less than 0.01) and in the percentage of simultaneous waves from 9.7% to 24.5% (p less than 0.01). The cold pressor test increased the peristaltic amplitude from 69.9 mmHg to 87.1 mmHg (p less than 0.001) and the percentage of simultaneous waves from 9.7% to 34.4% (p less than 0.01). Both manoeuvres were associated with increases in pulse and blood pressure. In patients with irritable bowel syndrome, the resting mean oesophageal peristaltic amplitude was higher than that seen in normal volunteers (95.9 mmHg v 69.9 mmHg p less than 0.05). Changes in oesophageal motility during stress were similar in these patients to those seen in normal subjects although the changes were not significant. This study refutes the hypothesis that symptoms of irritable bowel syndrome and their association with stress are attributable to increased sensitivity of oesophageal motility to disruption by stressful stimuli.
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PMID:Stress and oesophageal motility in normal subjects and patients with irritable bowel syndrome. 259 39

Hand temperature norms are presented for 221 headache patients (migraine, mixed, and tension), 105 hypertensives, 45 irritable bowel syndrome patients, and 56 normal controls under conditions of resting baseline, self-relaxation, volitional handwarming, mental arithmetic, and cold pressor. The two vascular headache groups (migraine and mixed) had significantly lower hand temperatures across conditions.
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PMID:Hand temperature norms for headache, hypertension, and irritable bowel syndrome. 263 72

Stress can modulate the motor function of the stomach, small bowel, and colon in healthy subjects, and of the small bowel and colon in patients with the irritable bowel syndrome (IBS). The effect of stress on oesophageal motility in eight healthy subjects and in eight IBS patients was studied, using two pressure transducers positioned just above the lower oesophageal sphincter and 5 cm proximally. Stressors were: a video arcade game, delayed audio feedback, and hand immersion in cold water. Each stress period was followed by five swallows of water. Frequency and amplitude of oesophageal contractions and the number of simultaneous and multipeaked contractions were manually counted for each stress period and compared to the preceding rest period. Frequency of contractions (per minute) tended to decrease during stress periods, but achieved significance only with the video arcade game in the control group (2.0 (0.6) v 1.2 (0.4); p less than 0.01). No other trend was evident in either control or IBS patients. No abnormalities of oesophageal body function were recorded in IBS patients either in basal conditions, or under stress. Unlike the more complex motor programmes elsewhere in the gut, the preprogrammed nature of oesophageal peristalsis is not modulated by stress.
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PMID:Effect of stress on oesophageal motor function in normal subjects and in patients with the irritable bowel syndrome. 320 18

The present investigation was designed to study the role of stress on the physiologic mechanisms of the colon in irritable bowel syndrome (IBS). Patients with IBS were compared with normal controls during resting and stress (mental arithmetic, cold pressor, and fear stressor). The results indicated that IBS patients had significantly higher motor activity than normals in the resting state but did not differ from them in the mean dominant frequency of the basal electrical rhythm (BER) or the proportion of the time they had 2-4 cycles per minute (cpm) slow-wave activity. Stress significantly increased motor activity in both groups although they did not differ significantly from each other during stress. Stress increased the proportion of 2-4 cpm slow-wave activity in IBS patients, but decreased in the controls. The type of stressor, however, did not influence either motor or electrical activity. Although IBS patients were significantly older than the controls and scored higher on the MMPI scales of Hypochondriasis, Hysteria, and Depression, these factors did not significantly influence differences in motor or electrical activity between the groups. The results are discussed in terms of the role of learning in the colon.
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PMID:The effect of stress on colon motor and electrical activity in irritable bowel syndrome. 404 60

Chronic illness behavior is defined by frequent visits to physicians, multiple somatic complaints, and disability disproportionate to physical findings. The prevalence of chronic illness behavior in people with irritable bowel syndrome and peptic ulcer was studied in a telephone survey of 832 people from metropolitan Cincinnati. People with irritable bowel syndrome (8% of the sample) were more likely than people with peptic ulcer (10% of the sample), and also more likely than the general population, to have multiple somatic complaints, to view their colds and flus as more serious than those of other people, and to consult a physician for minor illnesses. People with peptic ulcer were not different from the rest of the population in these regards. Chronic illness behavior appears to be learned; people who recalled being given gifts or special foods when they had a cold or flu as a child were more likely to exhibit chronic illness behavior and also more likely to have irritable bowel syndrome. These results suggest that social learning may contribute to the etiology of irritable bowel syndrome but not peptic ulcer.
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PMID:Learned illness behavior in patients with irritable bowel syndrome and peptic ulcer. 707 18

We wished to determine if visceral perception in the rectum and stomach is altered in patients with irritable bowel syndrome and to evaluate the effects on visceral sensation of 5-HT3 receptor blockade. Twelve community patients with diarrhea-predominant irritable bowel syndrome and 10 healthy controls were studied in a double-blind, randomized, placebo-controlled study. Using two barostats, the stomach and rectum were distended, with pressure increments of 4 mm Hg, from 10 to 26 mm Hg; visceral perception was measured on an ordinal scale of 0-10. Personality traits were measured using standard psychological methods, and somatic pain was evaluated by immersion of the nondominant hand in cold water. The effect of 5-HT3 antagonism was tested with a single intravenous dose of ondansetron at 0.15 mg/kg. Gastric perception was higher in irritable bowel syndrome, but rectal distension was perceived similarly in irritable bowel syndrome and controls. Pain tolerance to cold water was also similar in irritable bowel syndrome and controls. Ondansetron induced rectal relaxation and increased rectal compliance but did not significantly alter gastric compliance or visceral perception. Psychological test scores were similar in patients and controls. We conclude that in this group of psychologically normal patients with irritable bowel syndrome, who were not chronic health-care seekers, visceral perception was normal. Ondansetron did not alter gut perception in health or in irritable bowel syndrome.
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PMID:Visceral perception in irritable bowel syndrome. Rectal and gastric responses to distension and serotonin type 3 antagonism. 772 Apr 76

Previous studies suggest that the ways in which parents respond to children's health complaints (reinforcement) and the ways in which they cope with their own illnesses (modeling) influence the frequency of symptoms, disability days, and health care visits made by these children when they grow up. However, previous studies have not controlled for the mediating influence of stress, neuroticism, and physical examination findings. This study investigated the influence of childhood social learning on adult illness behavior in 383 women aged 20 to 40 years. Illness behavior was measured prospectively for 12 months by the frequency of symptoms, disability days, and physician visits for menstrual, bowel, and cold (upper respiratory) symptoms. Childhood reinforcement and modeling was measured retrospectively by validated questionnaires. Other independent variables were stress, neuroticism, and selected demographic variables. Multiple regression analysis was used to assess the relative contribution of each independent variable to each category of illness behavior. The principal findings were as follows. First, childhood reinforcement of menstrual illness behavior significantly predicted adult menstrual symptoms and disability days, and childhood reinforcement of cold illness behavior significantly predicted adult cold symptoms and disability days. These effects were independent of stress and neuroticism. Second, childhood reinforcement scales were useful to predict which functional disorders (dysmenorrhea or irritable bowel syndrome) these subjects had even after we controlled for stress and neuroticism.
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PMID:Modeling and reinforcement of the sick role during childhood predicts adult illness behavior. 787 Nov 10

Irritable bowel syndrome (IBS), is characterized by gastrointestinal hyperalgesia. In this study we investigated mucosal application of dyclonine on urge to defecate and pain threshold in volunteers and IBS patients (n = 10). Either saline or dyclonine (40 ml enema) was administered 10 minutes prior to rectosigmoid distension or cutaneous cold water pressor test. In IBS patients and volunteers no differences in cutaneous pain thresholds were noted. However, IBS patients had a lower pain threshold in the rectosigmoid than volunteers. In volunteers there was a significant difference between the threshold for urge to defecate and the threshold for rectosigmoid pain that was not apparent in IBS patients. Dyclonine administered directly into the rectosigmoid did not alter urge to defecate or pain threshold induced by distension in volunteers or IBS patients. These data suggest that the origin of pain perception is localized in deeper structures within the wall of the rectosigmoid colon.
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PMID:Irritable bowel syndrome: a study to investigate the mechanism(s) of visceral hypersensitivity. 890 58


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