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- W2156855285 abstract "<h3>BACKGROUND</h3> Luminal anionic sulphide may contribute to epithelial damage in ulcerative colitis. Thiol methyltransferase (TMT) governs sulphide detoxification by the colonic mucosa and circulating erythrocytes. <h3>AIMS</h3> To measure levels of TMT activity in erythrocytes of surgically treated cases of colitis or in rectal biopsies of defined groups of colitis. <h3>PATIENTS</h3> Venepuncture blood was obtained from 37 blood donors and 27 subjects who had previously undergone a proctocolectomy for colitis: 18 for ulcerative colitis and nine for Crohn9s colitis. Rectal biopsies from 122 cases were obtained: 47 without mucosal disease, 33 post-colon resection for cancer, 14 with moderate to severe ulcerative colitis, 15 with quiescent ulcerative colitis, seven with acute Crohn9s colitis, and six with radiation proctitis. <h3>METHODS</h3> TMT activity was measured by high performance liquid chromatography with radioactive detection to measure <sup>14</sup>C methylmercaptoethanol formation, the reaction product of cell extracts incubated with mercaptoethanol and <sup>14</sup>C S-adenosylmethionine. <h3>RESULTS</h3> Erythrocyte TMT activity of surgically treated cases of colitis was significantly elevated (p<0.001) compared with control cases. TMT activity of rectal biopsies was significantly decreased (p<0.02) in acute but not quiescent ulcerative colitis, Crohn9s colitis, or radiation colitis. <h3>CONCLUSIONS</h3> Erythrocyte TMT activity was persistently elevated after proctocolectomy for Crohn9s disease and ulcerative colitis. No primary defect of TMT activity was found in any case of unoperated colitis but mucosal activity was diminished with disease progression of ulcerative colitis. Studies of genetic control of TMT activity of erythrocytes in inflammatory bowel disease appear worthwhile." @default.
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- W2156855285 date "2000-08-01" @default.
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- W2156855285 title "Thiol methyltransferase activity in inflammatory bowel disease" @default.
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- W2156855285 doi "https://doi.org/10.1136/gut.47.2.206" @default.
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