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Related Concept Videos

Stomach pH Regulation01:21

Stomach pH Regulation

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The human body carefully regulates the internal pH of different organs to maintain homeostasis. For example, while the blood plasma maintains a neutral pH of 7, the stomach lumen has an acidic pH of 1.5 - 3.5. The low pH of stomach lumen helps kill pathogens in the food and break down complex food molecules.
The acid-secreting gastric mucosal epithelial cells (parietal cells) lining the stomach lumen maintain the low pH in the lumen. Numerous ion transporters and channels on these parietal...
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Stomach Histology01:26

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The stomach comprises several layers that work together to facilitate digestion and protect the organ. The outermost layer is called the serosa, which provides support and protection to the stomach. The muscularis externa layer is responsible for the mechanical breakdown of food by contracting and moving the stomach. The submucosa layer, located beneath the muscularis externa, contains connective tissue, blood vessels, nerves, and glands that secrete mucus and other substances essential for...
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Gross Anatomy of the Stomach01:16

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The human stomach is a vital part of the digestive system, performing multiple functions. It is located within the peritoneum, a serous membrane that lines the abdominal cavity. The stomach plays a central role in processing food substances and interacts with other digestive organs through coordinated digestive processes. The stomach has a characteristic J-shape and is divided into four main regions. The cardia is the first section where the esophagus connects to the stomach and is the entry...
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Mucosal Barrier of the Stomach01:25

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The gastric glands contain parietal cells that secrete hydrochloric acid (HCl) for digestion. The cells secrete HCl because it is highly corrosive and essential for breaking down food. To achieve this, they secrete hydrogen and chloride ions into the lumen of the gastric glands, which combine to form HCl.
Within parietal cells, carbonic acid is first formed through the reaction of water and carbon dioxide. The dissociation of carbonic acid releases bicarbonate and hydrogen ions. The bicarbonate...
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Hormones Secreted by the Stomach01:25

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Enteroendocrine cells, accounting for only 1% of stomach epithelial cells, play a significant role in digestion and are classified by their digestive hormone secretions.
Each of these hormones secreted by different enteroendocrine cells plays a unique role in digestion. Here are a few examples:
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Detergent Purification of Membrane Proteins01:18

Detergent Purification of Membrane Proteins

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Detergents are used to purify the integral proteins of the membrane. The hydrophobic portion of the detergent can replace membrane phospholipids while solubilizing the membrane proteins. When detergent monomers reach a specific concentration in a solution called critical micelle concentration (CMC), they form micelles. Above CMC, the concentration of the detergent monomers remains in equilibrium with the micelle. The number of detergent monomers present in the CMC varies for each detergent, and...
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Updated: Feb 2, 2026

A Protocol for Roux-en-Y Gastric Bypass in Rats using Linear Staplers
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Whole rat stomach decellularisation using a detergent-enzymatic protocol.

Elisa Zambaiti1, Federico Scottoni1, Eleonora Rizzi1

  • 1Stem Cell and Regenerative Medicine Section, DBC, UCL, Great Ormond Street Institute of Child Health, University College of London, Surgery Offices, 30 Guilford Street, London, WC1N 1EH, UK.

Pediatric Surgery International
|November 17, 2018
PubMed
Summary
This summary is machine-generated.

Researchers successfully decellularized whole rat stomachs using a detergent-enzymatic method. This process preserves the extracellular matrix, creating potential scaffolds for tissue-engineered stomach regeneration and improving quality-of-life.

Keywords:
DecellularisationExtracellular matrixGastrectomyMicrogastriaScaffoldStomachTissue engineering

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Area of Science:

  • Biomaterials Science
  • Regenerative Medicine
  • Gastroenterology

Background:

  • Reduced gastric volume significantly impacts patient quality-of-life.
  • Tissue-engineered stomach augmentation offers a potential solution for restoring gastric function.
  • Developing effective methods for creating biocompatible gastric scaffolds is crucial.

Purpose of the Study:

  • To evaluate the efficacy of a detergent-enzymatic protocol for decellularizing whole rat stomachs.
  • To characterize the preservation of extracellular matrix components after decellularization.
  • To assess the suitability of decellularized gastric tissue for regenerative applications.

Main Methods:

  • Whole rat stomachs were harvested and cannulated via luminal and vascular routes.
  • A 24-hour detergent-enzymatic treatment was employed for decellularization.
  • Characterization included DNA quantification, extracellular matrix component analysis, and histological staining.

Main Results:

  • The protocol achieved complete decellularization, evidenced by DNA removal confirmed through quantification and histology.
  • Key extracellular matrix components (collagen, fibronectin, laminin, elastin) were well-preserved.
  • A reduction in glycosaminoglycans was observed post-treatment.

Conclusions:

  • Efficient decellularization of gastric tissue is achievable using the described protocol.
  • Decellularized gastric scaffolds retain structural integrity and essential matrix components, promoting in vivo integration.
  • This naturally derived material holds promise for treating congenital and acquired gastric conditions.