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[The decrease of gastric mucosal blood flow in obstructive jaundice under stress]

N Yang1, W Xu, J Duan

  • 1Department of Surgery, People's Hospital, Beijing Medical University.

Zhonghua Yi Xue Za Zhi
|October 17, 1998
PubMed
Summary
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Obstructive jaundice under stress significantly decreases gastric mucosal blood flow (GMBF) due to increased ET-1 and Angiotensin-II. Administering antagonists improved GMBF, offering gastric mucosal protection.

Area of Science:

  • Gastroenterology
  • Physiology
  • Pharmacology

Context:

  • Obstructive jaundice is a condition that can lead to significant physiological stress.
  • Stress exacerbates the decrease in gastric mucosal blood flow (GMBF) in patients with obstructive jaundice.
  • Understanding the mechanisms behind GMBF reduction is crucial for developing effective treatments.

Purpose:

  • To investigate the underlying causes of decreased GMBF during obstructive jaundice under stress.
  • To evaluate the role of Endothelin-1 (ET-1) and Angiotensin-II (Ang-II) in GMBF reduction.
  • To assess the therapeutic potential of antagonists in improving GMBF.

Summary:

  • Common bile duct ligation (CBDL) in Wistar rats under cold restraint stress led to a significant decrease in GMBF.

Related Experiment Videos

  • Elevated levels of ET-1 and Ang-II, along with decreased H2 and alpha 1 receptor density, were observed in the gastric mucosa.
  • Administration of antagonists (anti-ET-1 serum, Enalapril, Phentolamine) prior to stress significantly improved GMBF.

    • Impact:

    • This study elucidates the key mediators contributing to gastric mucosal hypoperfusion in obstructive jaundice under stress.
    • The findings highlight the protective role of antagonists in preserving gastric mucosal integrity.
    • This research provides a basis for novel therapeutic strategies aimed at preventing gastric complications in obstructive jaundice.