title: 5-Aminosalicylic acid in the treatment of Crohn's disease. A 16-week double-blind, placebo-controlled, multicentre study with Pentasa.
abstract: The response to 5-aminosalicylic acid (5-ASA) in mild and moderately active Crohn's disease localized in the small bowel was studied in a randomized, double-blind, placebo-controlled trial in four centres. Sixty-seven patients were included, of whom 30 were treated with 1500 mg slow-release 5-ASA/day (Pentasa) for a scheduled period of 16 weeks. In the 5-ASA group 40% of the patients improved, versus 30% of the placebo-treated group ('intent to treat' basis; p greater than 0.1). Four of the patients treated with 5-ASA left the study owing to disease deterioration, versus 10 of the placebo-treated patients (p greater than 0.2). Seventeen patients were secondarily excluded, and the remaining 50 patients (23 receiving 5-ASA) were reevaluated in greater detail. No statistically significant differences in outcome were shown. Three patients (one given 5-ASA) were withdrawn from the study because of presumed side effects, but no serious adverse reactions were recorded. The present results indicate that 5-ASA, at least in the dosage used, is not superior to placebo. Nevertheless, trends towards a beneficial effect in Crohn's disease in the small bowel justify further clinical trials with a larger dosage of 5-ASA.
authors.affiliation: Dept. of Medical Gastroenterology F, Glostrup Hospital, Denmark.
authors.forename: S N
authors.initials: SN
authors.lastname: Rasmussen
authors.forename: K
authors.initials: K
authors.lastname: Lauritsen
authors.forename: U
authors.initials: U
authors.lastname: Tage-Jensen
authors.forename: O H
authors.initials: OH
authors.lastname: Nielsen
authors.forename: P
authors.initials: P
authors.lastname: Bytzer
authors.forename: O
authors.initials: O
authors.lastname: Jacobsen
authors.forename: K
authors.initials: K
authors.lastname: Ladefoged
authors.forename: M
authors.initials: M
authors.lastname: Vilien
authors.forename: V
authors.initials: V
authors.lastname: Binder
authors.forename: J
authors.initials: J
authors.lastname: Rask-Madsen
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000636:Aminosalicylic Acids / Q000009:adverse effects / Q000627:therapeutic use*; D002986:Clinical Trials as Topic; D003424:Crohn Disease / Q000188:drug therapy*; D004311:Double-Blind Method; D005260:Female; D006801:Humans; D008297:Male; D019804:Mesalamine; D008875:Middle Aged; D011897:Random Allocation
chemical_list: D000636:Aminosalicylic Acids; D019804:Mesalamine