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Related Concept Videos

Bioavailability Enhancement: Drug Stability Enhancement and GI Retention01:05

Bioavailability Enhancement: Drug Stability Enhancement and GI Retention

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Improving a drug's stability in the gastrointestinal (GI) tract is paramount for enhancing its bioavailability and therapeutic effectiveness. Various strategies are employed to protect the drug from the harsh gastric milieu and to ensure its release and absorption at the desired site within the GI tract.Polymer coatings are one such method used to shield drugs from the stomach's acidic environment. By preventing premature drug release, these coatings improve the bioavailability of unstable...
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Hepatic Drug Excretion: Influencing Factors01:16

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The biliary system of the liver, crucial for bile secretion and drug excretion, comprises intrahepatic bile ducts that merge to form the common hepatic duct. This duct, carrying hepatic bile, combines with the cystic duct, draining the gallbladder and forming the common bile duct, which empties into the duodenum. Bile, produced by hepatic cells lining the bile canaliculi, is composed primarily of water, bile salts, pigments, electrolytes, and lesser amounts of cholesterol and fatty acids. Bile...
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Related Experiment Video

Updated: Mar 26, 2026

Endoscopic Ultrasound-Guided Biliary Drainage: Endoscopic Ultrasound-Guided Hepaticogastrostomy in Malignant Biliary Obstruction
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Drug eluting biliary stents to decrease stent failure rates: A review of the literature.

Joseph Shatzel1, Jisoo Kim1, Kartik Sampath1

  • 1Joseph Shatzel, J Marc Pipas, Section of Hematology-Oncology, Dartmouth Hitchcock Medical Center, Lebanon, NH 03756, United States.

World Journal of Gastrointestinal Endoscopy
|February 4, 2016
PubMed
Summary

Drug-eluting biliary stents show promise in preventing stent obstruction caused by tumor ingrowth and biofilm. Further human trials are needed, but current research suggests they are safe and potentially effective.

Keywords:
Bile ductsCholangiocarcinomaEndoscopyPancreas

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Area of Science:

  • Gastroenterology
  • Biomedical Engineering
  • Interventional Radiology

Background:

  • Biliary stenting effectively relieves malignant and non-malignant obstructions.
  • High stent failure rates occur due to tumor ingrowth, epithelial overgrowth, biofilm development, and clogging.

Purpose of the Study:

  • To review current research on drug-eluting biliary stents.
  • To assess the safety and efficacy of drug-eluting stents in preventing biliary stent obstruction.

Main Methods:

  • Literature review of studies investigating drug-eluting biliary stents.
  • Analysis of research on mechanisms of stent failure and prevention strategies.

Main Results:

  • Drug-eluting stents are being investigated as a prophylactic measure against stent failure.
  • Limited human trial data exists, but preliminary research indicates potential safety and efficacy.

Conclusions:

  • Drug-eluting biliary stents represent a promising approach to reduce stent failure.
  • Further clinical investigation is warranted to confirm the benefits of drug-eluting stents in preventing obstruction.