Could gut-liver function derangements cause chronic venous insufficiency?

Area of Science:

• Vascular Biology
• Gastroenterology
• Hepatology

Background:

• Chronic venous insufficiency (CVI) is linked to adhesion molecules and neutrophil infiltration, but systemic inflammation's role in microcirculation is understudied.
• This research explores the gut-liver axis as a source of oxidative stress and white blood cell activation in CVI.

Purpose of the Study:

• To investigate the gut-liver axis's role in oxidative stress and white blood cell activation in patients with chronic venous insufficiency.
• To assess gut-derived oxidative stress markers and venous hemodynamics in CVI patients versus controls.

Main Methods:

• Compared venous hemodynamics (ambulatory venous pressure, air plethysmography, duplex) and gut-derived oxidative stress markers in nine CVI patients and nine controls.
• Assessed stool analysis for Candida overgrowth, intestinal permeability (lactulose/mannitol ratio), hepatic detoxification (caffeine, salicylate, acetaminophen), and urine lipid peroxides.

Main Results:

• No significant difference in ambulatory venous pressure between groups.
• Candida overgrowth in stool was significantly higher in CVI patients (p=0.015).
• CVI patients showed impaired hepatic sulfation (p<0.03) and glucuronidation (p<0.04), suggesting diminished antioxidant capacity.

Conclusions:

• Gut dysbiosis (yeast overgrowth) and hepatic detoxification pathway exhaustion may contribute to subclinical systemic inflammation and white blood cell adhesion in CVI.
• The gut-liver axis is a potential factor in the pathogenesis of chronic venous insufficiency.
• Further research is needed to understand the relationship between oxidative stress and venous disease.