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Related Concept Videos

Mucosal Barrier of the Stomach01:25

Mucosal Barrier of the Stomach

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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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Gastric Motility01:16

Gastric Motility

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Gastric motility is the coordinated contraction and relaxation of stomach muscles that convert ingested food into chyme, a semi-liquid substance ready for further digestion in the intestines. The process begins with the vagus nerve inducing the relaxation of the smooth muscles in the fundus and body of the stomach, allowing these regions to expand and accommodate up to approximately 1.5 liters of food and liquid.
Peristaltic Waves and Chyme Formation
Upon food entry, the stomach initiates...
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Gastric Emptying01:16

Gastric Emptying

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Gastric emptying occurs when the stomach gradually releases chyme into the duodenum. When the stomach is distended, it triggers the release of gastrin, a hormone that promotes gastric acid secretion to aid in digestion. Additionally, stomach distension contributes to peristaltic waves that propel gastric contents toward the pyloric region. The gastroenteric reflex, on the other hand, primarily stimulates peristalsis in the intestines, facilitating the movement of contents further along the...
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Physiology of the Gastrointestinal System I: Ingestion and Propulsion01:22

Physiology of the Gastrointestinal System I: Ingestion and Propulsion

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The physiology of the gastrointestinal system begins with ingestion as food enters the mouth.
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Methods for Studying Drug Absorption: In situ01:09

Methods for Studying Drug Absorption: In situ

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In situ experiments, such as the Doluisio method and Single-Pass Perfusion technique, provide critical insights into drug uptake by simulating in vivo conditions for drug absorption.
The Doluisio method involves perfusing a prepared segment of a rat's small intestine with a solution of radiolabeled drug and a non-absorbable marker. This helps to differentiate between absorbed and non-absorbed drug concentrations. The intestinal segment is connected at both ends using tubing and syringes,...
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Intestinal Obstruction I: Introduction01:29

Intestinal Obstruction I: Introduction

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Intestinal obstruction is a partial or complete blockage of the small or large intestine that disrupts the normal flow of intestinal contents through the lumen. This interruption impairs digestion, absorption, and fluid balance, and may lead to serious complications if not treated promptly.Mechanical ObstructionMechanical obstruction occurs when a physical blockage prevents intestinal contents from passing, arising from within the lumen or the bowel wall, or from external compression.Adhesions,...
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Updated: May 2, 2026

Endoscopic Ultrasound-Guided Biliary Drainage: Endoscopic Ultrasound-Guided Hepaticogastrostomy in Malignant Biliary Obstruction
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Endoscopic Ultrasound-Guided Biliary Drainage: Endoscopic Ultrasound-Guided Hepaticogastrostomy in Malignant Biliary Obstruction

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Bioresorbable biliary stents: A step forward.

Li-Bo Zhang1, Yan Wang2, Xiao-Jun Yang3

  • 1The First Clinical Medical School, Gansu University of Chinese Medicine, Lanzhou 730000, Gansu Province, China.

World Journal of Clinical Cases
|August 29, 2025
PubMed
Summary
This summary is machine-generated.

Bioresorbable biliary stents offer a novel solution for recurrent bile duct strictures, degrading naturally to avoid complications associated with traditional stents. This innovative approach simplifies treatment and reduces patient burden.

Keywords:
Benign biliary strictureBiliary injuryBiliary stentBiliary strictureBiodegradable

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Area of Science:

  • Gastroenterology and Hepatology
  • Biomaterials Science
  • Surgical Innovation

Background:

  • Recurrent biliary strictures post-bile duct injury pose significant clinical challenges.
  • Traditional nondegradable stents are associated with complications like restenosis, migration, and infection.
  • Bioresorbable biliary stents present an emerging alternative for managing biliary strictures.

Discussion:

  • Bioresorbable stents, often made from polylactic acid (PLA) or polycaprolactone, degrade over time, eliminating the need for removal.
  • Tailoring degradation rates to the biliary healing process minimizes long-term complications.
  • This approach reduces patient trauma and healthcare costs compared to conventional stent management.

Key Insights:

  • Case report highlights a multidisciplinary treatment strategy for recurrent biliary strictures.
  • Bioresorbable stent technology offers advantages in managing complex biliary anatomy.
  • Degradation profiles of bioresorbable stents can be engineered for optimal clinical outcomes.

Outlook:

  • Further research into optimizing bioresorbable stent materials and degradation kinetics is warranted.
  • Clinical trials are needed to establish long-term efficacy and safety profiles.
  • Integration of bioresorbable stents into standard clinical practice requires further investigation.