We have shown that neurokinin A-induced contraction of human sigmoid circular muscle (HSCM) is reduced in patients with ulcerative colitis and that interleukin (IL)-1beta may play a role in this change. We now examine changes in the signal transduction pathway mediating neurokinin A-induced contraction of HSCM and explore the role of IL-1beta and of H(2)O(2) in these changes. In Fura 2-AM-loaded ulcerative colitis HSCM cells, neurokinin A- and caffeine-induced peak Ca(2+) increase and cell shortening were significantly reduced.
View Article and Find Full Text PDFObjective: To assess the utility of gracilis muscle transposition in the treatment of iatrogenic rectourethral fistula.
Summary Background Data: Iatrogenic rectourethral fistula poses a rare but challenging complication of treatment for prostate cancer. A variety of procedures have been described to treat this condition, none of which has gained acceptance as the procedure of choice.
Purpose: The aim of this study was to determine the optimal dose and dosing interval of nitroglycerin ointment to heal chronic anal fissures.
Method: A randomized, double-blind study of intra-anally applied nitroglycerin ointment (Anogesic) was conducted in 17 centers in 304 patients with chronic anal fissures. The patients were randomly assigned to one of eight treatment regimens (0.
Hypothesis: Interleukin 1 beta (IL-1 beta) levels are elevated in the colonic mucosa of patients with ulcerative colitis (UC). We propose that IL-1 beta may also be elevated in the circular muscle layer of the colon and may be partially responsible for the motility dysfunction observed in patients with UC.
Design: Cohort analytic study.