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Changes in permeability after ileoanal pouch anastomosis and in pouchitis

, : Changes in permeability after ileoanal pouch anastomosis and in pouchitis. Langenbecks Archiv für Chirurgie. Supplement. Kongressband. Deutsche Gesellschaft für Chirurgie. Kongress 115(Suppl I): 719-724

The aim of the present study was to determine the changes in permeability and mucosal function after ileo-pouchanal anastomosis (IPAA) in patients with ulcerative colitis. We examined 24 patients (m: f = 15:9; Age = 35.2 +/- 12.5) prior to colectomy (pre IPAA), prior to closure of ileostomy (pre CIS), after closure of ileostomy (post CIS), in case of pouchitis and 5 controls. With a miniaturizised Ussing-chamber electrophysiological parameters of permeability and resorptive isotope-fluxes for mannitol were measured. Total resistance could be differenciated into epithelial and subepithelial resistance by using alternating current impedance measurements. Active Na(+)-glucose-Cotransport was measured by detection of the maximal short-curcuit-current under stepwise addition of glucose and active Cl(-)-secretion was measured by the increase in short-curcuit-current after stimulation with Theophillin and PGE2. Epithelial resistance of pouchitis was slightly raised towards controls but did not differ from the others. Subepithelial resistance post CIS and pouchitis was significantly increased versus controls and pre CIS (21.2 +/- 22.4 vs. 10.7 +/- 13.3 omega cm2) Whereas Cl-secretion of pouchitis was significantly reduced vs. post CIS and controls (38.6 vs. 120.9 +/- 113.9 microA cm-2). In the same way Na(+)-glucose Cotransport of pouchitis was significantly reduced vs. post CIS and controls(41.8 vs. 138.4 +/- 264.4 microA cm-2). Increasing subepithelial resistance post CIS and in pouchitis is a hint for an adaptive thickening of the subepitheal layer. Concerning the functional analysis pouchitis and terminal ileum prior to IPAA show a reduced secretion and resorption whereas the mucosal barrier towards Mannitol remains unchanged.


PMID: 14518348

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