Summary
Transauricular hypophysectomy in rats was found to reduce gastric secretion to very low levels (volume, acid, pepsin, mucus, expressed in terms of hexosamine). Treatment for 5 days with bovine STH (somatotrophic or growth hormone) restored nearly completely the acid, partially the volume and mucus, but not the pepsin. In another series of rats, it was found that hypophysectomy reduced by half the sensitivity to prednisolone-induced ulcers. This protection by hypophysectomy is not explained. It is not due to the lack of STH because treatment with this hormone reduced further the occurrence of ulcerations to almost complete inhibition. The antiulcer property of STH, manifested in spite of an increase in acid secretion, may be mediated through its increasing effects on mucus secretion; it may also be due to a stimulation of gastric connective tissue.
Similar content being viewed by others
References
Crafts, R. C., andWalker, B. S. The effects of hypophysectomy on gastric acidity of adult female rats.Endocrinology 40:395, 1947.
Tuerkischer, E., andWertheimer, E. Adrenalectomy and gastric secretion.J. Endocrinol. 4:143, 1945.
Abrams, G. D., andBaker, B. L. The cytology and secretory activity of gastric zymogenic cells after ablation of ductless glands.Gastroenterology 27: 462, 1954.
Baker, B. L., andAbrams, G. D. The hypophyseal growth hormone, nature and actions. An International Symposium. McGraw-Hill, New York, 1955, p. 107.
Sun, D. C. H., Shay, H., Siplet, H., andGruenstein, M. Effect of experimental athyroidism and hypothyroidism upon gastric secretion in the rat.Gastroenterology 27:189, 1954.
Kyle, J., andWelbourn, R. B. The influence of the adenohypophysis and the adrenal cortex on gastric secretion in the rat.Brit. J. Surg. 44:241, 1956.
Jacobson, E. D., andMagnani, T. J. Some effects of hypophysectomy on gastrointestinal function and structure.Gut 5:473, 1964.
Menguy, R. Effect of restraint stress on gastric secretion in the rat.Am. J. Digest. Dis. 5: 911, 1960.
Hanson, H. M. Restraint and gastric ulcers.J. Neuropsychiat. 4:390, 1963.
Peremans, J. Effet de l'hypophysectomie sur l'estomac du rat blanc préparé selon la méthode de Shay.Ann. Endocrinol. 18:927, 1957.
Skoryna, S. C., Webster, D. R., andKahn, D. S. A new method of production of experimental gastric ulcer: the effects of hormonal factors on healing.Gastroenterology 34:1, 1958.
Robert, A., andSelye, H. Effet de la cortisone et de la STH sur l'ulcère gastrique expérimental.Ann. Endocrinol. 13:845, 1952.
Löfgren, L. Experimental gastric histamine erosions and ulcers. With special reference to the effect of somatotrophic hormone on their frequency.Ann. med. exper. et biol. Fenniae 32:Suppl. 1, 1954.
Falconi, G., andRossi, G. Transauricular hypophysectomy in rats and mice.Endocrinology 74:301, 1964.
Koyama, R. Experimentelle Untersuchungen uber die Hypophysenexstirpation an Ratten und die Wirkung des Vorderlappenextrakes.Jap. J. M. Sc. Tr., IV, Pharmacol. 5: 41, 1931.
Koyama, R. A simple method of hypophysectomy in rats (Koyama's external auditory canal method).Endocrinol. Japon. 9:321, 1962.
Crooke, A. C., andGilmour, J. R. A description of the effect of hypophysectomy on the growing rat, with the resulting histological changes in the adrenal and thyroid glands and the testicles.J. Path. & Bact. 47:525, 1938.
Robert, A., Bayer, R. B., andNezamis, J. E. Gastric mucus during development of ulcers in fasting rats.Gastroenterology 45:740, 1963.
Robert, A., Nezamis, J. E., andPhillips, J. P. Different properties of two mucigogues, pilocarpine and mercuric acetate.Am. J. Physiol. In press.
Anson, M. L. The estimation of pepsin, trypsin, papain, and cathepsin with hemoglobin.J. Gen. Physiol. 22:19, 1938.
Boas, N. F. Method for the determination of hexosamines in tissues.J. Biol. Chem 204:553, 1953.
Robert, A., andNezamis, J. E. Ulcerogenic property of steroids.Proc. Soc. Exper. Biol. Med. 99:443, 1958.
Snedecor, G. W. Statistical Methods (ed. 5). Iowa State College Press, 1956, p. 251.
Jones, T. W., andHarkins, H. N. Evaluation of mechanisms involved in gastric acid secretion of pylorus-ligated ratsGastroenterology 35:309, 1958.
Selye, H. “The Part of Inflammation in the Local Adaptation Syndrome.” In The Mechanism of Inflammation. An International Symposium. Acta Inc., Med. Publishers, Montreal, Canada, 1953, p. 53.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Robert, A., Phillips, J.P. & Nezamis, J.E. Gastric secretion and ulcer formation after hypophysectomy and administration of somatotrophic hormone. Digest Dis Sci 11, 546–552 (1966). https://doi.org/10.1007/BF02233566
Issue Date:
DOI: https://doi.org/10.1007/BF02233566