Download Gastrointestinal Hormones and Pathology of the Digestive by R. A. Gregory (auth.), Morton Grossman, V. Speranza, N. PDF
By R. A. Gregory (auth.), Morton Grossman, V. Speranza, N. Basso, E. Lezoche (eds.)
The discovery that an identical or related peptides are found in endocrine cells and in neurons is among the most fun and provocative contemporary advancements in biology. by surprise neurophysiologists and endocrinologists have came upon that they've very much to debate with one another. components initially remoted as hypothalamic hormones grow to be abundantly found in neurons of alternative elements of the mind and in endocrine cells and neurons of the intestine and pancreas. equally, ingredients initially remoted as intestine hormones are came across not just in intestine endocrine cells but additionally in intestine neurons and in mind neurons. It seems that the crowd of peptides that we're acquainted with name gastrointestinal hormones usually are not all restrained to the gastrointestinal tract and aren't all exclusively hormones. we're studying that the chemical transmitters of the neurocrine, endocrine, and paracrine structures shape a unmarried workforce of comparable ingredients. This quantity comprises the most recent installments during this interesting tale. It tells how those pep tides have been remoted and their amino acid sequences decided, how the heterogeneity of so much, maybe all, of those peptides is being published as variation different types of them are stumbled on, how antibodies to those peptides are used as strong instruments to degree their concentrations in physique fluids and to localize the cells during which they're synthesized and kept, and, ultimately, how the function of those components in common body structure and in pathological states is being unraveled.
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Extra resources for Gastrointestinal Hormones and Pathology of the Digestive System
Sample text
No information CONCLUSION It can be seen from the foregoing discussion that the recognition of this large new component of the autonomic nervous system and its study by a combination of immunocytochemistry and radioimmunoassay has yielded some interesting information and is beginning to explain many previously puzzling aspects of gut function and pathology. We have only mentioned a few instances of gut pathological conditions which may involve the peptidergic nervous supply. In many cases its role is still entirely speculative and in others research is in progress.
581, 1972 Pharmacol. Rev. 24: 509- 8. Bloom SR, Polak JM: Peptidergic Lancet I: 93, 1978 versus purinergic. 9. Pearse AGE: Common cytochemical properties of cells producing polypeptide hormones, with particular reference to calcitonin and the thyroid C cells. Vet. Rec. 79: 587-590, 1966 The 10. Pearse AGE, Takor Takor T: Neuroendocrine embryology and the APUD concept. Clin. Endocrinol. ): 229-234, 1976 11. Feyrter F: tiber diffuse endokrine epitheliale organe. A. Barth, Leipzig, 1938, p. 6-17 12.
4 succeeded in demonstrating, by bioassay and radioimmunoassay, that in the dog release of gastrin by bombesin was accompanied by release of CCK, as shown by the increase in plasma levels of immunoreactive CCK from 107 ± 7 to 165 ± 16 pg/ml. However, it should be stressed that caution is necessary before definitively accepting the above results, because reliable and simple methods for radioimmunoassay of CCK in blood and tissues are not yet available, in spite of the promising results obtained by Rehfeld 5 and by Rayford et al.