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Tegaserod, a selective and partial agonist at the 5-hydroxytryptamine (5-HT [serotonin]) receptor subtype 4 (5-HT4), is the only United States Food and Drug Administration-approved drug for the treatment of constipation-predominant irritable bowel syndrome (IBS) in women. The drug's stimulation of 5-HT4 receptors on intestinal enterocytes increases peristaltic activity and fluid secretion into the gut lumen, facilitating stool passage. In addition, affinity of tegaserod for 5-HT4 receptors modulates visceral sensitivity, which helps alleviate abdominal pain associated with constipation-predominant IBS. The drug's pharmacokinetic and pharmacodynamic parameters do not differ significantly with age or sex. Tegaserod safely and effectively relieves overall gastrointestinal symptoms and abdominal discomfort and normalizes bowel habits in patients with constipation-predominant IBS. It is associated with few drug interactions. In clinical studies, tegaserod was well tolerated, and its adverse-effect profile was similar to that of placebo. Severe diarrhea, as well as abdominal pain, flatulence, headache, and nausea, were the most commonly reported events. Patients who experience severe diarrhea should discontinue the drug. With the data available, tegaserod remains an option for patients with constipation-predominant IBS.
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PMID:Tegaserod for constipation-predominant irritable bowel syndrome. 1725 16

We describe the presence of anisakiasis in a patient who had a small hiatal hernia. A 60 year-old women presented general malaise, burning pain, flatulence, persistent nausea and abdominal distension during five days before consulting. She referred that she ate a dish of marinated raw fish with lemon and pepper ("cebiche") and after a few hours the symptoms began. An esophagogastroscopy showed a white colour larva of approximately three cm with the cephalic end partially adhered and localized in the mucosa of the hiatal hernia. During the procedure the worm was easily extracted. The morphologic study of the specimen identified it as a stage IV larva of Pseudoterranova sp. The clinical condition of the patient improved after the extraction of the parasite.
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PMID:[Anisakiasis in a patient with a small hiatal hernia. Report of one case]. 1727 74

B. hominis is a unicellular protozoan commonly identified in stool specimens of travelers who have returned from tropical countries. It has a world-wide distribution, and infection is more common in developing countries compared to industrialized nations. Clinical features of illness which have been attributed to Blastocystis include nausea, anorexia, abdominal pain, flatulence and acute or chronic diarrhea. The preferred method of diagnosis is a permanently stained smear of an unconcentrated stool specimen. The presence of B. hominis in stool specimens of symptomatic travelers should prompt clinicians to search for other unrecognized co-pathogens. Due to controversy regarding the pathogenicity of B. hominis in humans, clinicians are often faced with the dilemma of whether or not they should offer treatment for B. hominis infection in returned travelers. The most commonly used drugs for treatment include metronidazole and trimethoprim-sulfamethoxazole (TMP-SMX), when treatment is deemed necessary. Prevention in travelers should focus on food and water precautions as the organism is transmitted by the fecal-oral route.
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PMID:Blastocystis hominis and travelers. 1729 2

HIV/AIDS is changing the human landscape in sub-Saharan Africa. Relatively few patients receive antiretroviral therapy, and many suffer from debilitating diarrhea that affects their quality of life. Given the track record of probiotics to alleviate diarrhea, conventional yogurt fermented with Lactobacillus delbruekii var bulgaricus and Streptococcus thermophilus was supplemented with probiotic Lactobacillus rhamnosus GR-1 and L. reuteri RC-14. Twenty-four HIV/AIDS adult female patients (18 to 44 y) with clinical signs of moderate diarrhea, CD4 counts over 200, and not receiving antiretrovirals or dietary supplements, consumed either 100 mL supplemented or unsupplemented yogurt per day for 15 days. Hematologic profiles, CD4 cell counts, and quality of life was evaluated at baseline, 15 and 30 days postprobiotic-yogurt feeding. There was no significant alteration in the hematologic parameters of both groups before and after the probiotic-yogurt feeding. The probiotic yogurt group at baseline, 15 and 30 days had a mean WBC count of 5.8+/-0.76 x 10(9)/L, 6.0+/-1.02 x 10(9)/L, and 5.4+/-0.14 x 10(9)/L, respectively. However, the mean CD4 cell count remained the same or increased at 15 and 30 days in 11/12 probiotic-treated subjects compared to 3/12 in the control. Diarrhea, flatulence, and nausea resolved in 12/12 probiotic-treated subjects within 2 days, compared to 2/12 receiving yogurt for 15 days. This is the first study to show the benefits of probiotic yogurt on quality of life of women in Nigeria with HIV/AIDS, and suggests that perhaps a simple fermented food can provide some relief in the management of the AIDS epidemic in Africa.
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PMID:Yogurt containing probiotic Lactobacillus rhamnosus GR-1 and L. reuteri RC-14 helps resolve moderate diarrhea and increases CD4 count in HIV/AIDS patients. 1822 3

Postprandial hyperglycaemia and spikes have deleterious effects on Insulin secretion and sensitivity. The present study was undertaken to evaluate the efficacy, safety and tolerability of miglitol 50 mg three times daily for 12 weeks in 129 patients with type 2 diabetes mellitus, inadequately managed with diet and exercise therapy alone for 3 months after obtaining their written informed consent. The primary efficacy variables were per cent change from baseline at week 12 in fasting and postprandial plasma glucose concentrations and glycosylated haemoglobin (HbA(1C)) levels. After treatment at the end of 12 weeks mean reduction in fasting plasma glucose levels was 35.7% and 44.33% in postprandial plasma glucose levels while the mean HbA(1C) was significantly reduced by 0.88% (p<0.05). Total cholesterol, HDL, LDL and TC/HDL ratio did not showed any significant change but a non-significant reduction in triglyceride levels was observed in some patients. The mean body mass index was reduced non-significantly by 8% from baseline values. A total 19.5% patients treated with miglitol reported adverse events like flatulence, abdominal pain, nausea/vomiting, diarrhoea and dyspepsia. Only one patient reported hypoglycaemia. The results of the present study indicate that miglitol reduces fasting and postprandial plasma glucose levels, Improving glycaemic control, which is reflected in a reduced HbA(1C) level in patients with type 2 diabetes mellitus. It could be a useful first-line therapy in patients with type 2 diabetes mellitus inadequately controlled by diet alone and as adjuvant therapy in patients who are inadequately controlled with diet and sulfonylureas.
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PMID:Evaluation of the efficacy, safety and tolerability of miglitol in adult Indian patients with uncomplicated type 2 diabetes mellitus. 1823 83

To explore and evaluate the safety and efficacy of early oral intake following major abdominal gynecological oncology surgery. During an 11-month period, 60 gynecological oncology patients undergoing major intra-abdominal surgery were enrolled in a randomized controlled clinical trial of semiliquid diet (experimental group) compared with clear feeds (control group) 6 hours after operation. Patients were evaluated for nausea, vomiting, bowel sound, passage of flatus, body weight difference before and after operation, urine acetone, fasting blood sugar, and prealbumin level, and need for nasogastric tube decompression. There were significantly higher incidences of nausea, shorter time of regular diet resumption, and higher level of prealbumin on postoperative day 7 in patients from the experimental group than those from the control group (P < .05). No significant differences were found in vomiting, the time to development of bowel sound and passage of flatus, body weight difference before and after operation, urine acetone and fasting blood sugar on postoperative day 1, and prealbumin level on postoperative day 2 between the 2 groups. Early oral intake with semiliquid diet 6 hours after major intra-abdominal gynecological oncology surgery is safe and well tolerated.
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PMID:Early oral intake after intra-abdominal gynecological oncology surgery. 1845 77

Non ulcer dyspepsia is one of the most common problems encountered in primary care practice. The underlying pathophysiology of non ulcer dyspepsia is not fully understood, but it is known that this condition is associated with H. pylori infection and motility disorder. The presenting abdominal symptoms are non specific: they include bloating, belching, flatulence, excessive fullness after eating and nausea. Psychological condition such as anxiety, depression and stress do play a role in the recurrence of symptoms. Upper GI endoscopy is necessary in patients who presents with alarm symptoms suggestive of possible underlying organic condition before one makes the diagnosis of non ulcer dyspepsia. Pharmacological therapy using H2 receptor antagonist and proton pump inhibitors are effective for symptom relief. Patient's education and supportive care should be part of the management strategy in recurrent chronic dyspepsia.
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PMID:Understanding non ulcer dyspepsia. 1894 14

Off-label use of uncoated sulfasalazine tablets (TAB) by rheumatoid arthritis (RA) patients in the United States has resulted in poor gastrointestinal (GI) tolerance and compliance. Two studies have shown that treatment of inflammatory bowel disease with enteric-coated sulfasalazine ([EN] Azulfidine ENtabs) resulted in significantly less frequent and severe GI symptoms, compared with treatment with TAB. The current study was conducted to compare GI tolerance of EN and TAB in rheumatoid arthritis (RA) patients. Fifty adult sulfasalazine-naive patients, who displayed stable RA and no significant GI toxicity with nonsteroidal anti-inflammatory drugs and disease-modifying anti-rheumatic drugs at baseline, were randomized to receive 2 g EN or TAB, in a prospective, 10-week, investigator-blinded, crossover study. After an initial 3-week dosing period with either EN or TAB and a 2-week washout, patients were crossed over to the alternative sulfasalazine formulation for a 2nd 3-week dosing period and 2-week follow-up. GI tolerance of EN and TAB in patients who completed both arms of the crossover was assessed bv frequency and intensity of reported adverse events (primary endpoints) and responses to health questionnaires (secondary endpoints).Twelve patients dropped out early because of adverse events and the discontinuation rate was similar in E\ and TAB-treated patients. Patients taking EN who completed the study reported significantly fewer (p < 0.001) GI adverse events (abdominal pain, anorexia, flatulence, diarrhea, heartburn, nausea, and vomiting), compared with those patients taking TAB. The intensity of adverse events was predominantly mild in patients treated with either EN or TAB. Responses to questionnaires were similar in patients taking either formulation of sulfasalazine. However, when asked which treatment period was preferred at the end of the study, 849 of patients completing the study (p < 0.001) chose EN. This study suggests that enteric-coating of sulfasalazine improved GI tolerance and RA patient preference.
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PMID:Improved gastrointestinal tolerance and patient preference of enteric-coated sulfasalazine versus uncoated sulfasalazine tablets in patients with rheumatoid arthritis. 1907 85

Oral sodium picosulfate/magnesium citrate (CitraFleet; Picolax), consisting of sodium picosulfate (a stimulant laxative) and magnesium citrate (an osmotic laxative), is approved for use in adults (CitraFleet; Picolax) and/or adolescents and children (Picolax) as a colorectal cleansing agent prior to any diagnostic procedure (e.g. colonoscopy or x-ray examination) requiring a clean bowel and/or surgery. It is dispensed in powder form (sodium picosulfate 0.01 g, magnesium oxide 3.5 g, citric acid 12.0 g per sachet), with the magnesium oxide and citric acid components forming magnesium citrate when the powder is dissolved in water. In adult patients, two sachets of sodium picosulfate/magnesium citrate was at least as effective and well tolerated as oral magnesium citrate 17.7 or 35.4 g, or oral polyethylene glycol 236 g in adult patients undergoing a double-contrast barium enema procedure in three large, randomized, comparative clinical studies. In contrast, sodium picosulfate/magnesium citrate was less effective than a sodium phosphate enema preparation in two studies in patients undergoing flexible sigmoidoscopy. A similar number of patients receiving two sachets of sodium picosulfate/magnesium citrate or two 45 mL doses of oral sodium phosphate the day before a double-contrast barium enema procedure achieved satisfactory barium coating and none/minimal faecal residue in one study. However, the data from three of these studies should be interpreted with caution because the administrative regimens used differed from that recommended. Sodium picosulfate/magnesium citrate is also an effective and generally well tolerated colorectal cleansing agent in children and adolescents; the preparation was more effective than oral bisacodyl 0.01 or 0.02 g plus a sodium phosphate enema preparation in this population. Further research is thus required to accurately position sodium picosulfate/magnesium citrate and fully establish its efficacy and tolerability prior to various exploratory or surgical procedures. Nevertheless, oral sodium picosulfate/magnesium citrate provides a useful option in the preparation of the colon and rectum in adults, adolescents and children undergoing any diagnostic procedure (e.g. colonoscopy or x-ray examination) requiring a clean bowel and/or surgery. Oral sodium picosulfate/magnesium citrate acts locally in the colon as both a stimulant laxative, by increasing the frequency and the force of peristalsis (sodium picosulfate component), and an osmotic laxative, by retaining fluids in the colon (magnesium citrate component), to clear the colon and rectum of faecal contents. It is not absorbed in any detectable quantities. Sodium picosulfate is a prodrug: it is hydrolyzed by bacteria in the colon to the active metabolite 4,4'-dihydroxydiphenyl-(2-pyridyl)methane. Sodium picosulfate/magnesium citrate may be associated with a dehydrating effect, as evidenced by a reduction in bodyweight and increased haemoglobin levels; some at-risk patients may experience postural hypotension and older patients may require additional electrolytes. In three large (n >100), randomized, single-blind clinical studies, two sachets of oral sodium picosulfate/magnesium citrate was at least as effective as oral magnesium citrate 17.7 or 35.4 g, or oral polyethylene glycol 236 g as a colorectal cleansing agent in adult patients undergoing a double-contrast barium enema procedure. In contrast, sodium picosulfate/magnesium citrate was less effective than a sodium phosphate enema preparation in two studies in patients undergoing flexible sigmoidoscopy. A similar number of patients receiving two sachets of sodium picosulfate/magnesium citrate or two 45 mL doses of oral sodium phosphate the day before a double-contrast barium enema procedure achieved satisfactory barium coating and none/minimal faecal residue in one study. However, the data from three of these studies should be interpreted with caution because the administrative regimens used differed from that recommended. In children and adolescents, sodium picosulfate/magnesium citrate was significantly more effective as a colorectal cleansing agent than oral bisacodyl 0.01 or 0.02 g plus a sodium phosphate enema preparation in a randomized, single-blind study; dosages were adjusted for age in this study. Oral sodium picosulfate/magnesium citrate is generally well tolerated in adult patients undergoing various investigational colorectal procedures. Adverse events were generally mild to moderate in intensity and mainly gastrointestinal in nature (e.g. abdominal cramps/pain, nausea); other common treatment-emergent adverse events included disturbance of daily activity, headache and sleep disturbance. This combination is at least as well tolerated as oral sodium phosphate or oral polyethylene glycol, with moderate/severe nausea and vomiting occurring less frequently in sodium picosulfate/magnesium citrate recipients than in those receiving oral sodium phosphate, and abdominal bloating/pain and nausea developing less often with sodium picosulfate/magnesium citrate than polyethylene glycol therapy. The incidence of abdominal pain and sleep disturbance in sodium picosulfate/magnesium citrate versus oral magnesium citrate recipients was similar in one study, but significantly lower with sodium picosulfate/magnesium citrate in another. While the incidence of most adverse events was similar in recipients of sodium picosulfate/magnesium citrate and a sodium phosphate enema preparation, more patients receiving sodium picosulfate/magnesium citrate reported moderate/severe flatulence, incontinence and sleep disturbance, and more patients receiving the enema preparation reported rectal soreness. The tolerability profile of sodium picosulfate/magnesium citrate in patients aged >70 years is reportedly similar to that in patients aged <70 years. Abdominal pain also occurred less frequently with sodium picosulfate/magnesium citrate than with oral bisacodyl plus a sodium phosphate enema preparation in children and adolescents.
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PMID:Sodium picosulfate/magnesium citrate: a review of its use as a colorectal cleanser. 1919 41

Lactose malabsorption and milk products intolerance symptoms are the most common alimentary tract disorders. Lactose intolerance is a result of lactase deficiency or lack of lactase and lactose malabsorption. Three types of lactase deficiency were distinguished: congenital, late-onset lactase deficiency and secondary lactase deficiency. Lactose intolerance means the appearance of clinical gastrointestinal symptoms after ingestion of lactose. To the clinical symptoms of lactose intolerance belongs: nausea, vomiting, abdominal distension, cramps, flatulence, flatus, diarrhea and abdominal pain. The diagnosis of lactose intolerance is based on the breath hydrogen test and analysis of lactase activity in the small intestine mucosa. Dietary treatment eliminates clinical symptoms.
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PMID:[Lactose intolerance: pathophysiology, clinical symptoms, diagnosis and treatment]. 1938 23


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