Abstract
In this study, dexamethasone-induced gastric lesions were studied in rats that had undergone sialoadenectomy. The ultrastructural changes developed during the study were detected by electron microscopically, while blood serum and stomach epidermal growth factor (EGF) concentrations were measured by RIA. The result of the study showed that gastric lesions were correlated with gastric mucus secretion and both serum and mucosa EGF levels. After the administration of dexamethasone, it was found that sialoadenectomy significantly (p<0.01) raised the incidence of stomach lesions (p<0.01), and a significant increase in mucus secretion was also found. Additionally, the serum and gastric mucosal EGF levels fell after sialoadenectomy when compared to normal rats. The most important gastric mucosal changes were observed in rats treated with dexamethasone and those both sialoadenectomised and treated with dexamethasone.
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Duval D, Durant S, Delarche H. Non-genomic effects of steroids: Interaction of steroid molecules with membrane structure and function. Biochim Biophys Acta 1983, 737: 409–42.
Berger V, Delinger HC. Hypergastrinaemia induced by glucocorticoid and corticotropin treatment in man. Dig Dis 1976, 21: 376–80.
Konturek PC, Bielanski W, Bobrzynski A, Hahn EG, Konturek SJ. Gastric mucosal expression and luminal release of growth factors in gastric carcinoma and duodenal ulcer patients before and after eradication of Helicobacter pylori. J Physiol Pharmacol 1997, 48: 375–82.
Hase S, Nakazawa S, Tsukamoto Y, Segawa K. Effects of prednisolone and human epidermal growth factor on an-giogenesis in granulation tissue of gastric ulcer induced by acetic acid. Digestion 1989, 42: 135–42.
Hollander D, Morrissey SM, Ward PM. Histochemistry of gastric mucins in smokers and non-smokers. Br J Clin Pract 1986, 40: 74–7.
Wright NA, Pike C, Elia G. Induction of a novel epidermal growth factor-secreting cell lineage by mucosal ulceration in human gastrointestinal stem cells. Nature 1990, 343: 82–5.
Konturek JW, Bielandki W, Konturek SJ, Bogdal J, Oleksy J. Distribution and release of epidermal growth factor in man. Gut 1989, 30: 1194–200.
Manjari V, Das UN. Effect of polyunsaturated fatty acids on dexamethasone-induced gastric mucosal damage. Prostag-landins Leukot Essant Fatty Acids 2000, 62: 85–96.
Venable JH, Coggeshall RA. Simplified lead citrate stain for use in electron microscopy. J Cell Biol 1965, 25: 407–8.
Tsutsumi O,Taketani Y, Oka T. Evidence for the involvement of epidermal growth factor in fertility decline in aging female mice. Horm Res 1993, 39: 32–6.
Corne SJ, Morriessey SM, Woods RJ. A method for quantitative estimation of gastric barrier mucus. J Physiol 1974, 242: 1169–79.
Ma L, Chow JYC, Wang HY, Cho CH. Cigarette smoke increases apoptosis in the gastric mucosa: role of epidermal growth factor. Digestion 1999, 60: 461–8.
Wu SQ, Zhu WY, Yu JR. Submaxillary gland epidermal growth factor accelerated healing of chronic gastric mucosal lesions in rats. Sheng Li Xue Bao 1993, 45: 575–80.
Gysin B, Muller KM, Fischi AE. Epidermal growth factor content of submandibular glands is increased in rats with experimentally induced gastric lesions. Scand J Gastroenterol 1988, 23: 665–71.
Knight A, Biliari D, Tinker J. Stress ulcer in critiralir ill patients. Br J Hosp Med 1985, 33: 216–9.
Niall M, Ryan GB, O’Brien BM. The effect of epidermal growth factor on wound healing in mice. J Surg Res 1982, 33: 164–9.
Alison MR, Chinery R, Poulsom R, Ashwood P, Longcroft JM, Wright N. Experimental ulceration leads to sequential expression of spasmolytic polypeptide, intestinal trefoil factor, epidermal growth factor and transforming growth factor mRNAs in rat stomach. J Pathol 1995, 175: 405–14.
Freston JW. Mechanisms of relapse in peptic ulcer disease. J Clin Gastroenterol 1989, 11: 34–8.
Tarnaswki A, Lu SY, Stachura J, Sarfeh IJ. Adaptation of gastric mucosa to chronic alcohol administration is associated with increased mucosal expression of growth factors and their receptor. Scand J Gastoenterol 1992, 27(Suppl): 59–63.
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Elitok, B., Elitok, Ö.M., Ketani, M.A. et al. The effect of dexamethasone on gastric mucosal changes following sialoadenectomy in rat. J Endocrinol Invest 28, 700–703 (2005). https://doi.org/10.1007/BF03347552
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DOI: https://doi.org/10.1007/BF03347552