[Evaluation of oxidative stress in experimental rabbit aneurysms]

Area of Science:

• Biomedical Science
• Vascular Biology
• Oxidative Stress Research

Context:

• Aneurysms are vascular abnormalities with significant morbidity and mortality.
• The precise mechanisms driving aneurysm formation and progression remain incompletely understood.
• Oxidative stress is increasingly recognized as a key factor in various cardiovascular diseases.

Purpose:

• To investigate the role of oxidative stress in the pathogenesis of experimentally induced aneurysms.
• To quantify markers of oxidative stress, including malondialdehyde (MDA), superoxide dismutase (SOD), and anti-reactive oxygen species (anti-ROS) units, in different types of aneurysms.
• To compare oxidative stress levels between aneurysmal and normal arterial tissues.

Summary:

• Rabbit models of terminal and lateral aneurysms were created, with normal arteries serving as controls.
• Significantly elevated MDA levels and reduced SOD and anti-ROS activity were observed in aneurysms compared to controls (P < 0.01).
• MDA showed strong negative correlations with SOD and anti-ROS activity, suggesting a direct link between lipid peroxidation and antioxidant capacity.

Impact:

• This study provides experimental evidence supporting the critical involvement of oxidative stress in aneurysm generation and development.
• Findings suggest that targeting oxidative stress pathways could be a potential therapeutic strategy for aneurysm treatment.
• The similar oxidative stress profiles across different aneurysm types may indicate a common underlying pathomechanism.