Randomized, placebo-controlled trial of low molecular weight heparin in active ulcerative colitis

Background: In several open and 1 controlled trial, unfractionated heparin was effective in the treatment of active ulcerative colitis (UC). Low molecular weight heparin (LMWH) had a similar effect in several open studies.Methods: We studied the efficacy, safety, and tolerability of LMWH in mild to moderately active UC in a randomized, double-blind, placebo-controlled trial. In all, 29 patients with a mild or moderate recurrence of UC during salicylate treatment were randomized to receive either reviparin 3,436 IU (n = 15) subcutaneously twice daily or placebo (n = 14). The study period was 8 weeks. Treatment was discontinued if there was no improvement at 4 weeks or at any disease progression. Primary outcome measure was clinical improvement at 8 weeks measured by the Colitis Activity Index (CAI) and the Clinical Symptoms Grading (CSG, based on the CAI). Endoscopic and histologic grading and quality of life as measured by the Inflammatory Bowel Disease Questionnaire (IBDQ) were secondary outcome measures. Patients were closely monitored for adverse events.Results: Twenty of 29 patients finished the 8-week treatment period (reviparin versus placebo: 11 versus 9; P = 0.70). There was no difference in CSG, CAI, endoscopic and histologic grading, or IBDQ. Treatment was well tolerated and no serious adverse events occurred.Conclusion: In this study, treatment with LMWH showed no significant clinical advantage compared to placebo in mild to moderately active UC.(Inflamm Bowel Dis 2007)

Future directions in research of endogenous production on N-nitroso compounds.

Future directions in research of endogenous production on N-nitroso compounds. Stockbrugger RW. Department of Gastroenterology/Hepatology, University Hospital Maastricht, The Netherlands. Publication Types: Review Review, Tutoria

Epidemiology of inflammatory bowel disease: an update.

Epidemiology of inflammatory bowel disease: an update. Russel MG, Stockbrugger RW. Dept. of Gastroenterology, Academic Hospital Maastricht, The Netherlands. What have epidemiologic studies on IBD taught so far? Consistent findings are as follows: A high incidence of both CD and UC in industrialized countries and an increase in these areas of the incidence of CD during the years 1960-80 followed by a plateau phase, and a more stable pattern in UC during the same period have been found. A greater number of mild cases have probably been diagnosed recently. This also helps to explain the differences in severity and survival between community and referral centre groups. The male to female ratio is greater than 1 in UC, and this is the opposite in CD. Mortality of IBD has decreased during the past decades. As young people are especially prone to develop IBD, most of those affected will have their disease for many years. In developing IBD, genetic influences are of importance. However, epidemiologic studies strongly point to possible interactions between genetically determined features and environmental or other factors. Of these exogenic factors smoking is the most consistent, being of negative influence in CD and protective in UC. Diet and oral contraceptives may influence disease expression, and perinatal events such as viral infections may alter adult susceptibility. The question remains open whether UC and CD are one diseases entity. Similarities in the epidemiologic features of UC and CD support the idea of IBD being one disease. Other findings suggest dividing UC and CD into further subgroups: in CD it has been suggested that fibrostenotic, penetrating, and inflammatory behaviour should be considered different disease entities; in UC some groups consider ulcerative proctitis a disease entity on its own, separating it from the proximally extending colitis. In therapeutic trials this approach has proved to be of importance, and it is not inconceivable that in subgroups, with regard to aetiopathogenetic mechanisms, different factors have to be looked for

The effect of a probiotic drink with Lactobacillus plantarum 299v on the bacterial composition in faeces and mucosal biopsies of rectum and ascending colon

Summary Background Studies on probiotics mainly base their results on faecal samples, which may not represent the situation in the mucosa of distal and proximal colon. Aim In a placebo-controlled study, to assess the effect of Lactobacillus plantarum 299v on the bacterial composition of faecal vs. mucosal samples. Methods Twenty-nine patients undergoing colonoscopic examination for polyps consumed a twice-daily drink with or without L. plantarum 299v (10(11) CFU/day) for 2 weeks. Faecal samples were collected before and after consumption. During colonoscopy, biopsies were collected from the ascending colon and rectum. The faecal and mucosal bacterial concentrations and prevalence were determined. Results L. plantarum 299v significantly increased the concentration of faecal lactic acid bacteria, lactobacilli and clostridia, and was identified in two rectal biopsies but not in the ascending colon biopsies of probiotic-treated subjects. Concentrations and prevalence in ascending colon and rectum biopsies were comparable, but were significantly lower compared with faecal samples. Conclusions After probiotic consumption, a significant increase in the faecal concentration of lactobacilli was found but concentrations were low in biopsies. The bacterial composition in biopsies of the ascending colon and rectum did not differ based on culture techniques. To further elucidate the modes of action of probiotics, it might be necessary to study differences in colonization with molecular techniques

Whipple's disease: a difficult diagnosis?

Whipple's disease: a difficult diagnosis? Peters FP, Elbrecht EA, Wouters RS, Engels LG, Stockbrugger RW. Department of Gastroenterology, University Hospital Maastricht, Netherlands. We present 3 patients with Whipple's disease all characterized by a longstanding prodromal period with progressive weight loss, diarrhoea, lymphadenitis and arthralgia or arthritis. Sarcoid-like Whipple's disease was diagnosed in one patient. He was treated with antibiotics. Initially his condition improved; however, a cerebral relapse developed which was treated successfully by ceftriaxone and cefixime. Extraintestinal Whipple's disease (lymph node localisation) was diagnosed in another patient treated successfully with antibiotics. A third case of Whipple's disease was unexpectedly diagnosed by laparotomy and partial small bowel resection. He was not treated till 2 years later with tetracycline. After 1 year of treatment his condition had improved. Publication Types: Case Reports Review Review, Tutoria

Gastro-oesophageal reflux disease in The Netherlands. Results of a multicentre pH study.

Gastro-oesophageal reflux disease in The Netherlands. Results of a multicentre pH study. Smout AJ, Geus WP, Mulder PG, Stockbrugger RW, Lamers CB. Dept. of Gastroenterology, University Hospital Utrecht, The Netherlands. Information on the relationships between gastro-oesophageal reflux (GOR), reflux symptoms, hiatal hernia (HH) and oesophagitis, and the response to antisecretory treatment is lacking. In a multicentre study endoscopy, ambulatory 24-h pH monitoring and symptom assessment were carried out in 142 patients with symptomatic reflux disease before and during treatment with ranitidine. Using a randomized, double-blind design, patients took ranitidine 150 mg bid or 300 mg bid. Macroscopic oesophagitis (grade I or II) was found in 85 patients; the remaining 57 patients had normal oesophageal mucosa. A significant correlation was found between the presence of an HH and the presence of oesophagitis. Symptom scores were similar in patients with and without oesophagitis, and in patients with and without HH. Patients with oesophagitis had significantly greater oesophageal acid exposure during the night, and in the total 24-h period, but not during the day. Likewise, patients with HH had greater acid exposure during the night (p < 0.008). Both doses of ranitidine significantly decreased oesophageal acid exposure and the effect was independent of baseline acid exposure. Reflux symptoms cannot be used to differentiate between presence or absence of oesophagitis and/or HH. Reflux patients without oesophagitis have less night-time reflux. Ranitidine dose-dependently decreases oesophageal acid exposure, and the effect is independent of baseline reflux. Publication Types: Clinical Trial Multicenter Study Randomized Controlled Tria