Abdominal Aortic Aneurysm: Roles of Inflammatory Cells

Area of Science:

• Cardiovascular Biology
• Immunology
• Vascular Medicine

Background:

• Abdominal aortic aneurysms (AAAs) are dilations of the aorta where molecular pathogenesis is unclear.
• Inflammation is recognized as a key factor in AAA development.
• Numerous immune cells infiltrate the aortic wall in AAA.

Purpose of the Study:

• To review the roles and mechanisms of inflammatory cells in AAA pathogenesis.
• To highlight the significance of understanding immune cell interactions in AAA.
• To inform potential screening and pharmacological interventions for AAA.

Main Methods:

• Review of existing literature on inflammatory cell involvement in AAA.
• Analysis of molecular mechanisms, including inflammasomes and neutrophil extracellular traps.
• Examination of immune cell infiltration and function within aortic walls.

Main Results:

• T cells, macrophages, dendritic cells, neutrophils, B cells, and mast cells are implicated in AAA.
• Inflammasomes and neutrophil extracellular traps play roles in aneurysm formation.
• Immune cell interactions are critical in initiating and promoting AAA expansion.

Conclusions:

• Inflammatory cells are central to AAA pathogenesis.
• Understanding immune cell networks is crucial for developing AAA interventions.
• Targeting inflammatory pathways may offer new therapeutic strategies for AAA.