Gastrointestinal Secretions Regulation
Gastrointestinal Secretions Regulation - Related Videos
01:19
Regulation of Hormone Secretion
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2024
Regulation of hormone secretion is a finely tuned orchestration driven by various types of stimuli, encompassing neural, humoral, and hormonal signals. Environmental cues instigate neural stimuli, where action potentials traverse nerve fibers to reach their designated targets. An illustrative scenario is the body's response to stress, wherein the sympathetic nervous system releases epinephrine from the adrenal glands, inducing the well-known 'fight or flight' reaction. Humoral stimuli,...
08:15
Gastrointestinal Motility Monitor (GIMM)
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Cited by 36 •
2010
Evaluation of colonic motility in the guinea pig distal colon with the Gastrointestinal Motility Monitor (GIMM) is a straightforward and simple to learn approach to quantitatively evaluate propulsive motility in the gastrointestinal tract.
07:41
Video Imaging and Spatiotemporal Maps to Analyze Gastrointestinal Motility in Mice
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Cited by 63 •
2016
This article describes a video imaging technique and high-resolution spatiotemporal mapping to identify changes in the neural regulation of colonic motility in adult mice. Subtle effects on gastrointestinal (GI) function can be detected using this approach in isolated tissue preparations to advance our understanding of GI disease.
06:02
Isolation of CD 90+ Fibroblast/Myofibroblasts from Human Frozen Gastrointestinal Specimens
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Cited by 17 •
2016
Here, a protocol to isolate and establish primary fibroblast/myofibroblast (MF) cultures from frozen gastric, small intestinal, and colonic tissue-yielding cells with a MF phenotype-is presented. These cells express CD90, α-SMA and vimentin. MFs can be used for a variety of functional assays including enzymatic activity and cytokine production.
02:22
Regulated mRNA Transport
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2020
In eukaryotes, transcription and translation are compartmentalized; an mRNA is first synthesized in the nucleus and then selectively transported to the cytoplasm for protein synthesis. Before transport, a pre-mRNA undergoes several steps of post-transcriptional modifications including splicing, 5' capping, and the addition of a poly-adenine tail. Various proteins bind to the pre-mRNA during these modifications. The mRNA transport takes place with the help of multiple proteins playing specific...
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These control systems work together rather than acting independently. Neural signals help coordinate secretion, while hormones and local mediators adjust responses to food, luminal acidity, and intestinal contents. Their combined activity allows the gastrointestinal tract to change acid, bicarbonate, mucus, digestive enzyme, bile, and fluid release according to changing digestive conditions.
Gastrin and secretin respond to different gastrointestinal conditions and act on different secretory outcomes. Gastrin stimulates gastric acid secretion, supporting the stomach’s digestive activity. Secretin is released when acidic chyme enters the duodenum and promotes pancreatic bicarbonate release, helping the intestine respond to incoming acidity.
Effective regulation must support digestion without compromising the gastrointestinal lining. Acid and digestive enzymes contribute to processing food, whereas mucus and bicarbonate contribute to protection. Coordinated control of these secretions helps match digestive activity with protective needs, making the balance between luminal digestion and mucosal defense a central pharmacological concern.
These drug groups are pharmacological tools for modifying gastrointestinal secretory function. Proton pump inhibitors, H2-receptor antagonists, and antacids are identified as distinct treatment options within the broader management of acid-related conditions. Understanding the regulatory pathways helps place these agents in context and explains why pharmacology targets secretion rather than digestion alone.
Food provides a stimulus for regulated gastrointestinal secretion, while the arrival of acidic chyme in the duodenum produces a different response. Gastrin is associated with stimulation of gastric acid secretion, whereas secretin promotes pancreatic bicarbonate release after acidic chyme enters the duodenum. This sequence illustrates how location and luminal conditions shape secretory activity.
Modifying secretion is relevant when excessive or insufficient secretory activity contributes to disease. The overview specifically connects these interventions with peptic ulcer disease, gastroesophageal reflux, and disorders involving abnormal secretion. Pharmacology therefore uses knowledge of secretory regulation to guide treatment approaches that alter acid-related or other gastrointestinal secretory processes.