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A randomized trial of nicotine enemas for active ulcerative colitis

Ingram, John R., Thomas, G. A. O., Rhodes, J., Green, J. T., Hawkes, N. D., Swift, J. Ll, Srivastava, E. D., Evans, B. K., Williams, G. T., Newcombe, R. G., Courtney, E. and Pillai, S. 2005. A randomized trial of nicotine enemas for active ulcerative colitis. Clinical Gastroenterology and Hepatology 3 (11) , pp. 1107-1114. 10.1016/S1542-3565(05)00849-9

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Abstract

BACKGROUND & AIMS: Ulcerative colitis (UC) is largely a disease of nonsmokers in which transdermal nicotine improves the symptoms but often causes adverse events (AEs). Nicotine enemas cause fewer AEs and were used as supplemental treatment for active UC. METHODS: We treated 104 patients with active UC with either 6-mg nicotine enemas or placebo enemas for 6 weeks in a randomized double-blind study. Patients continued their oral therapy, if any, for UC: 68 patients were taking mesalamine, 15 patients were taking prednisolone, and 12 patients were taking thiopurines during the study. Clinical, sigmoidoscopic, and histologic assessments were made at baseline and at the end of the study and symptoms were recorded daily on a diary card. The primary end point was induction of clinical remission and clinical improvement also was measured by the UC disease activity index. After the study, patients then used nicotine enemas daily for 4 weeks and sigmoidoscopy with a biopsy examination was repeated. AEs and salivary cotinine levels were monitored throughout the study. RESULTS: Clinical remission was achieved in 14 of 52 (27%) patients on active treatment and 14 of 43 (33%) patients on placebo (P = .55). The UC disease activity index improved by 1.45 points in the active group and by 1.65 points for those on placebo (P = .88). Only 1 patient discontinued treatment because of an AE (abdominal pain). In the 47 patients taking mesalamine only, active treatment conferred benefit that was not statistically significant; disease remission occurred in 9 of 25 patients on active therapy and 4 of 21 patients on placebo (P = .20). CONCLUSIONS: Six-milligram nicotine enemas were well tolerated but were not found to be efficacious for active UC.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Medicine
Subjects: R Medicine > RM Therapeutics. Pharmacology
Publisher: Elsevier
Funders: Gastrointestinal Foundation Trust, SLA Pharma
Last Modified: 04 Jun 2017 08:47
URI: http://orca.cf.ac.uk/id/eprint/85000

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