Gastrin releasing peptideother name Gastrin-releasing peptide (GRP) is a vital regulatory peptide with a significant role in numerous physiological processes, primarily within the gastrointestinal and central nervous systems. This 27-amino-acid neuropeptide is structurally similar to bombesin and is best known for its ability to elicit gastrin release, which in turn stimulates gastric acid secretion. Beyond this foundational function, GRP acts as an important signaling molecule, influencing enteric motor function and engaging in complex interactions within the brain. Understanding the multifaceted function of gastrin-releasing peptide is crucial for grasping its impact on digestion, as well as its potential involvement in various neurological and pathological conditions.
The most extensively studied function of gastrin-releasing peptide revolves around its direct influence on gastric acid secretion. GRP acts as a potent stimulator for the release of gastrin from G cells located in the stomach's antrumFunction. Gastrin-releasing peptide is a regulatory human peptide thatelicits gastrin releaseand regulates gastric acid secretion and enteric motor function.. Gastrin, a hormone, then travels through the bloodstream to the parietal cells in the stomach lining, where it binds to receptors and triggers the secretion of hydrochloric acid.Gastrin-Releasing Peptide - an overview This mechanism is fundamental to the digestive process, ensuring an acidic environment necessary for breaking down food and activating digestive enzymesGastrin-releasing peptide.
Furthermore, GRP contributes to the regulation of enteric motor function. This involves influencing the coordinated muscle contractions within the gastrointestinal tract that propel food through the digestive system作者：J Ischia·2014·被引用次数：57—GRP and GRP-R are expressed in prostate cancer and GRP can stimulate the growth of prostate cancer cell lines. Importantly, GRP is a key neuroendocrinepeptide, which may be involved in the progression of advanced prostate cancer and in the neuroendocrine differentiation of prostate cancer.. By modulating these movements, GRP plays a role in the overall efficiency and rhythm of digestion.
While its impact on digestion is well-established, the function of gastrin-releasing peptide extends significantly into the central nervous system (CNS)作者：S Peng·2023·被引用次数：46—...function(45, 46). Importantly, GRP/GRPR is highly conserved across animal species (36, 47, 48), indicating that it is the principal receptor for nonhistaminergic itch in the spinal cord and trigeminal sensory neurons. Therefore, the structure-based design of GRPR non-peptideantagonists is promising to usher in a .... GRP and its receptors (GRPR) are widely distributed throughout the brain, indicating a broader regulatory role. GRPR-mediated signaling in the CNS is implicated in a variety of brain functions, although the precise mechanisms are still under investigation. This involvement suggests that GRP may influence behaviors and physiological processes beyond simple digestion作者：DB Cornelio·2007·被引用次数：324—These data describe a ubiquitous GRPR expression in non-neoplastic human breast tissue, indicating aroleof GRP in breast physiology, and a ....
Emerging research also highlights GRP's involvement in sensory perception, including the perception of itch作者：Y Gidron·2016—Indeed, GRP plays arolein pulmonary diseases leading to asthma, and its blockade serves as a therapeutic target in such conditions (Zhou et al. 2011). GRP .... Studies suggest that GRP signaling in the spinal cord and trigeminal sensory neurons plays a role in transmitting pruritic stimuli, opening avenues for understanding and potentially treating conditions involving chronic itching.GRP (human) | Bombesin Receptor Agonists: Tocris Bioscience
The presence and activity of gastrin-releasing peptide are not confined to normal physiological processes. GRP has also gained attention for its potential role in various disease states, particularly in cancer. GRP and its receptor (GRPR) are expressed in several types of cancer, including prostate cancer and small-cell lung carcinoma (SCLC). In these contexts, GRP can act as a growth factor, stimulating the proliferation of cancer cells and potentially contributing to tumor progression and neuroendocrine differentiation作者：Y Gidron·2016—Indeed, GRP plays arolein pulmonary diseases leading to asthma, and its blockade serves as a therapeutic target in such conditions (Zhou et al. 2011). GRP ....
This association has led to GRP being investigated as a potential tumor marker for diagnosing and monitoring certain cancers. Its elevated levels in specific conditions may provide valuable diagnostic or prognostic informationGastrin-Releasing Peptide - an overview. Moreover, the GRP/GRPR system is being explored as a therapeutic target, with efforts focused on developing antagonists to block its signaling pathways in cancer treatment.
Beyond cancer, GRP has also been implicated in inflammatory diseases, such as those leading to asthma. Its role as a mediator in influenza-induced inflammatory disease suggests it could be a novel target for therapeutic interventions in respiratory conditionsGRP (human) | Bombesin Receptor Agonists: Tocris Bioscience. Additionally, GRP signaling has been linked to alcohol-associated liver injury, indicating its influence on diverse pathological processes.
Gastrin-releasing peptide (GRP) is a versatile peptide with critical functions in both the gastrointestinal and central nervous systems. Its primary role in stimulating gastrin release and subsequently gastric acid secretion is fundamental to digestion. However, its influence extends to regulating gut motility, participating in CNS signaling, and potentially modulating sensory perception like itch.Gastrin-releasing peptide(GRP) regulates numerousfunctionsof the gastrointestinal and central nervous systems, including release of gastrointestinal ... Furthermore, GRP's involvement in the progression of certain cancers and inflammatory diseases positions it as an important area of research for both diagnostic and therapeutic strategies. As our understanding of GRP's intricate functions continues to grow, its significance in maintaining physiological balance and its potential as a target for medical interventions will undoubtedly become clearer作者：A Hirooka·2021·被引用次数：21—Two related (bombesin-like) peptides,gastrin-releasing peptide(GRP) and neuromedin B (NMB) have been found in mammals. The history of GRP/ ....
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