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GI hormones are chemical messengers that are involved in several aspects of physiological functions of the canal, as well as the regulation of secretion, absorption and digestion, and gut motility. GI hormones are an oversized family of peptides and are secreted by endocrine cells that are cosmopolitan throughout the GI tissue layer and exocrine gland. Gastrin, secretin, and cholecystokinin (CCK) were the primary discovered gut hormones, and as of nowadays, there are over fifty gut internal secretion genes and a large number of bioactive peptides.
The classical GI hormones are secreted by epithelial cells lining the lumen of the stomach and small intestine. These hormone-secreting cells - endocrinocytes - are interspersed among a much larger number of epithelial cells that secrete their products (acid, mucus, etc.) into the lumen or take up nutrients from the lumen. GI hormones are chemical messengers that are implicated in many aspects of physiological functions of the gastrointestinal tract, including the regulation of secretion, absorption and digestion, and gut motility.
Related Journals of Gastrointestinal Hormones
Journal of Steroids & Hormonal Science, Hormones and Cancer, Vitamins and Hormones, Frontiers of Hormone Research.