Gastricinhibitory peptidereleased by Gastrin inhibitory peptide, also widely known as glucose-dependent insulinotropic polypeptide (GIP), is a crucial peptide hormone that plays a significant role in regulating glucose metabolism and insulin secretion作者：K Gupta·2022·被引用次数：26—The insulinotropic effect of GIP has been shown to be attenuated in patients with cystic fibrosis and pancreatic insufficiency.. This hormone, part of the secretin family, is synthesized and released by endocrine cells in the proximal small intestine in response to nutrient intake. Its physiological actions are central to the body's postprandial (after a meal) hormonal responses, working in concert with other incretin hormones like glucagon-like peptide-1 (GLP-1).
Initially identified as a factor in intestinal extracts that inhibited gastric motility and acid secretion, gastrin inhibitory peptide was first termed "enterogastrone.Gastric inhibitory polypeptide does not inhibit ..." However, subsequent research revealed that its primary function was not the inhibition of gastric acid but rather the potent stimulation of insulin secretion in a glucose-dependent manner.作者：C Gespach·1984·被引用次数：50—Gastric inhibitory peptide(GIP), pancreatic glucagon and vasoactive intestinal peptide (VIP) are cAMP-inducing hormones in the human gastric cancer cell line ... This led to its renaming as glucose-dependent insulinotropic polypeptide (GIP), a name that more accurately reflects its principal physiological effect. Despite the name change, the acronym GIP is now commonly used for both gastrin inhibitory peptide and glucose-dependent insulinotropic polypeptide, underscoring their identity.
The primary function of GIP is to enhance insulin release from pancreatic beta cells.Gastric Inhibitory Peptide, porcine (Synonyms: GIP (1-42), ... This effect is dose-dependent on blood glucose levels; GIP is most effective at stimulating insulin secretion when glucose concentrations are elevated, such as after a meal. This characteristic makes GIP a key player in the "incretin effect," which describes the phenomenon where oral glucose administration elicits a greater insulin response than intravenous glucose administration, even at equivalent blood glucose levelsGastric inhibitory peptide | hormone. GIP accounts for a significant portion of this incretin effect, working alongside GLP-1 to ensure appropriate insulin delivery following nutrient absorptionGastric inhibitory peptide (GIP), pancreatic glucagon and ....
Beyond its insulinotropic actions, GIP also influences other aspects of metabolism. It can stimulate glucagon secretion under certain conditions and has been implicated in the regulation of appetite and energy balance. Research also indicates that GIP can affect lipid metabolism and may play a role in the storage of dietary fat. While its initial discovery pointed to an inhibitory role in gastric acid secretion, this effect is now considered secondary and less potent compared to its insulin-stimulating effectsGastric inhibitory polypeptide.
Disruptions in GIP signaling or secretion are associated with various metabolic disorders. In type 2 diabetes, the incretin effect is often blunted, and while GIP levels may be elevated, its ability to stimulate insulin secretion can be impaired, a phenomenon known as "GIP resistance." This resistance is a significant factor in the pathophysiology of type 2 diabetes, contributing to hyperglycemia.
Conversely, GIP's role in regulating glucose homeostasis has made it a target for therapeutic development. Strategies aimed at enhancing GIP signaling or its interaction with GLP-1 are being explored for the treatment of type 2 diabetes and obesityGIP receptor binds gastric inhibitory peptide. Dual agonists that target both GIP and GLP-1 receptors have shown promising results in clinical trials, demonstrating significant improvements in glycemic control and substantial weight loss.
GIP functions in close coordination with other gastrointestinal hormones, most notably GLP-1. Both hormones are secreted in response to nutrient ingestion and contribute to the incretin effect.gastric inhibitory polypeptide | Ligand page Understanding the synergistic and sometimes distinct roles of GIP and GLP-1 is crucial for comprehending overall metabolic regulation.Gastric inhibitory polypeptide (GIP), also known as glucose-dependent insulinotropic polypeptide, isan inhibiting hormone of the secretin family of hormones. Current research continues to explore the intricate mechanisms of GIP action, its receptor interactions, and its potential as a therapeutic target for a range of metabolic conditions. The ongoing investigation into GIP and its related peptides promises to yield further insights into metabolic health and disease management.
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