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Colonic luminal hydrogen sulfide is not elevated in ulcerative colitis
J Moore1, W Babidge, S Millard
1University of Adelaide, Department of Surgery, The Queen Elizabeth Hospital, Woodville, Australia.
Digestive Diseases and Sciences
|March 21, 1998
Summary
This study found no significant difference in stool sulfide levels between ulcerative colitis patients and healthy controls. These findings suggest that luminal sulfide does not play a primary role in the development of ulcerative colitis.
Area of Science:
- Gastroenterology
- Microbiology
- Biochemistry
Background:
- Ulcerative colitis (UC) is associated with reduced n-butyrate oxidation in colonic cells.
- This reduction may be linked to luminal sulfur compounds from gut microflora.
- Dissimilatory sulfate reduction by bacteria produces sulfide, a potential factor in UC.
Purpose of the Study:
- To investigate the potential role of luminal sulfide in ulcerative colitis (UC).
- To compare stool sulfide concentrations in UC patients and healthy controls.
- To assess if disease extent, activity, or salicylate use influences sulfide levels in UC.
Main Methods:
- Stool samples collected from 15 controls and 19 UC patients.
- Sulfide measured using spectrophotometry on NaOH (free sulfide) and zinc acetate (total sulfide) slurries.
- UC patients stratified by disease extent, activity, and salicylate use.
Main Results:
- No significant difference in free or total stool sulfide between controls and UC patients.
- Free sulfide: control = 0.52 (0.17) vs. UC = 0.45 (0.10), P = 0.71.
- Total sulfide: control = 1.33 (0.21) vs. UC = 0.96 (0.15), P = 0.16.
- Disease characteristics did not significantly impact stool sulfide levels.
Conclusions:
- The study does not support a primary etiological role for luminal sulfide in ulcerative colitis.
- Findings suggest other factors may be more critical in UC pathogenesis.
- Further research into gut microflora metabolites and UC is warranted.