Cytidine-5-diphosphocholine reduces microvascular permeability during experimental endotoxemia

Area of Science:

• Pharmacology
• Sepsis Pathophysiology
• Microcirculation

Background:

• Sepsis involves increased microvascular permeability and leukocyte adhesion, leading to shock and mortality.
• Current therapies lack effectiveness in restoring microvascular barrier function during sepsis.
• Cholinergic mediators, like Cytidine-5-diphosphocholine (CDP-choline), exhibit anti-inflammatory properties.

Purpose of the Study:

• To evaluate the therapeutic effect of CDP-choline on microvascular permeability and leukocyte adhesion in an endotoxemia model.
• To investigate CDP-choline's impact on the compromised microvascular barrier during sepsis.

Main Methods:

• Intravital microscopy (IVM) was used to assess macromolecular leakage, leukocyte adhesion, and venular wall shear rate in rat mesenteric venules.
• Lipopolysaccharide (LPS) was administered to induce endotoxemia, with CDP-choline given at various time points.
• Statistical analysis included Wilcoxon and Dunn's multiple comparisons tests.

Main Results:

• LPS administration significantly increased microvascular permeability and leukocyte adhesion, while decreasing venular wall shear rate.
• CDP-choline treatment significantly attenuated the LPS-induced increase in microvascular permeability.
• CDP-choline did not significantly affect leukocyte adhesion or venular wall shear rate during endotoxemia.

Conclusions:

• CDP-choline demonstrates a protective effect on microvascular barrier function in the context of endotoxemia.
• The favorable safety profile of CDP-choline suggests its potential as a therapeutic agent for capillary leakage in sepsis.