Changes in functioning of colonicepithelium transport system andmucosal morphological indexes inrats with omeprazole-inducedhypergastrinemia of differentlength
T.M.Hurlenko, O.K.Voronina, V.M.Grischuk,G.M.Tolstanova, M.E.Dzerzhins’kiy, T.V.Beregova.
Kyiv National University named after Taras Shevchenko,Biological Faculty, Kyiv;Peter Bogach Institute of Physiology, Pharmaco-Physiology Department;Kyiv National University named after Taras Shevchenko ,Biological Faculty, Department of Cytology, Histologyand Developmental Biology
Abstract
The role of gastrin in epithelium water and electrolyte (Na+, K+,
CI-) transport in comparison with mucosal morphological indexes
(crypt depth, thickness of colonic mucosa and epitheliocytes
nuclear profound area) was investigated by using of omepra-
zole-induced (OM) hypergastrinemia model (for 1-4 weeks) and
in vivo perfusing technique in rats. Short-term hypergastrinemia
(for 1 – 2 weeks) caused the alterations in electroneutral ab-
sorption of NaCl. Prolongation of hypergastrinemia influence
up to 3 weeks had entailed the first manifestation of the trophic
effect on colonic mucosa expressed in alterations of electro-
genic sodium absorption and increased crypt depth with a thick-
ened colonic mucosa. Prolonged OM-induced hypergastrinemia
(for 4 weeks) had led to decreased colonocytes differentiation
level with an increased crypt depth, a thickened colonic mucosa
and decreased epitheliocytes nuclear profound area which in
turn have provoked the decreasing in net water and NaCl ab-
sorption.
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