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Improving RhoA-mediated intestinal epithelial permeability by continuous blood purification in patients with severe

Qing Shen1, Hua Gan, Mengxue Yang

  • 1Department of Nephrology, First Affiliated Hospital of Chongqing Medical University, Chongqing - China.

The International Journal of Artificial Organs
|December 17, 2013
PubMed

Insights

Continuous blood purification (CBP) reduces intestinal permeability in severe acute pancreatitis (SAP) by improving tight junction proteins. This effect is linked to decreased RhoA mRNA and tumor necrosis factor-alpha (TNF-α) levels.

Area of Science:

  • Gastroenterology
  • Critical Care Medicine
  • Renal Medicine

Background:

  • Intestinal mucosal barrier dysfunction increases intestinal permeability, potentially impacting severe acute pancreatitis (SAP) pathophysiology.
  • Continuous blood purification (CBP) shows promise in improving SAP prognosis, but its effects on intestinal epithelial permeability are understudied.

Purpose of the Study:

  • To investigate the therapeutic effects of CBP on intestinal epithelial permeability in patients with SAP.

Main Methods:

  • Caco-2 intestinal epithelial cells were exposed to serum from SAP patients undergoing CBP.
  • Assessed changes in cell permeability, tight junction proteins (occludin, ZO-1), RhoA mRNA, and serum tumor necrosis factor-alpha (TNF-α).

Main Results:

  • Before CBP, increased intestinal permeability, decreased tight junction proteins, and elevated RhoA mRNA and TNF-α were observed.
  • After CBP, intestinal permeability decreased, tight junction proteins increased, and RhoA mRNA and TNF-α levels were reduced.

Conclusions:

  • CBP reduces intestinal epithelial permeability in SAP by enhancing occludin and ZO-1 protein levels.
  • The beneficial effects of CBP may involve down-regulating RhoA mRNA expression and potentially removing TNF-α.
Abstract

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