• Turk J Med Sci · Jan 2014

    Expression of NADPH-d in the vagal nuclei of the chronic esophagitis model in rats.

    • Ümit Süleyman Şehirli, Halil Tuğtepe, Ural Verimli, Özlem Kirazli, Mazhar Özkan, and Emrullah Tolga Dağli.
    • Turk J Med Sci. 2014 Jan 1; 44 (2): 243-8.

    AimTo evaluate the changes in the number of NADPH diaphorase (NADPH-d) stained neurons in the vagal nuclei in a chronic esophagitis model.Materials And MethodsThere were 3 groups of rats examined: 1) a chronic gastroesophageal reflux rat group, which was created by a partial gastric outlet obstruction; 2) a sham group; and 3) a ranitidine treated group. Serial sections ofbrainstems of all groups were cut and NADPH-d staining, which selectively stains the nitric acid synthase-containing neurons, was done.ResultsHistopathological changes due to chronic reflux esophagitis was observed in the reflux group. The ranitidine treatment and sham control groups showed no changes related to esophagitis. The staining in the dorsal motor nucleus of the vagus and nucleus tractus solitarius showed statistically significant differences compared to the control group (P < 0.0001).ConclusionThe increased nitric oxide expressions in the dorsal vagal nucleus and nucleus tractus solitarius are most probably due to adaptive changes to disturbed esophageal motility and mucosal damage.

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