Related Experiment Videos
Loss of mesothelial electronegative fixed charges during murine septic peritonitis
L Gotloib1, A Shustak, J Jaichenko
1Department of Nephrology, Central Emek Hospital, Afula, Israel.
Abstract:
Previous studies showed that murine septic peritonitis induced a substantial reduction of the anionic site density distribution in mesenteric and diaphragmatic microvessels. The present study shows that acute experimental septic peritonitis induces a severe reduction of the anionic site density distribution along the submesothelial basement membrane. Five days after induction of peritonitis, there was a partial recovery of anionic sites which even at 13 days was not completed. This observation suggests that the increased protein losses observed during peritonitis are the consequence of increased microvascular and mesothelial permeability to anionic plasma proteins secondary to neutralization and/or disappearance of the anionic sites located in the microvascular wall and in the mesothelial layer.
Insights
Septic peritonitis severely reduces anionic sites in microvessels and mesothelium, increasing protein loss. Recovery of these anionic sites is incomplete even after 13 days.
Area of Science:
- Physiology
- Pathology
- Microvascular Research
Background:
- Previous studies indicated reduced anionic sites in microvessels during murine septic peritonitis.
- Anionic sites are crucial for regulating microvascular permeability.
Purpose of the Study:
- To investigate the impact of acute experimental septic peritonitis on anionic site distribution in the submesothelial basement membrane.
- To understand the relationship between anionic site changes and protein loss during peritonitis.
Main Methods:
- Induction of acute experimental septic peritonitis in a murine model.
- Assessment of anionic site density distribution along the submesothelial basement membrane at various time points post-induction.
Main Results:
- Acute septic peritonitis caused a severe reduction in anionic site density along the submesothelial basement membrane.
- Partial recovery of anionic sites was observed at 5 days, but was incomplete by 13 days.
Conclusions:
- The observed increase in protein loss during peritonitis is linked to heightened microvascular and mesothelial permeability.
- This increased permeability results from the loss or neutralization of anionic sites, allowing anionic plasma proteins to leak.