The Role of Viral Infections in Atherosclerotic Inflammation
Atherosclerosis has long been understood as a chronic inflammatory condition driven by lipid accumulation, endothelial dysfunction, and immune dysregulation. Emerging evidence, however, points to an underappreciated contributor: viral infections. Several common viruses — including hepatitis B and C, HIV, herpes simplex virus, and cytomegalovirus — may play a significant role in initiating or accelerating atherosclerotic inflammation. Stem Cells as Viral Targets Within atherosclerotic plaques, stem and pluripotent cells form a critical proliferative pool. These cells are particularly susceptible to viral invasion. When infected, stem cells can generate clones that perpetuate dysfunction across successive generations of daughter cells. Even subtle impairment in stem cell function may result in the production of defective mature cells, which then enter the inflammatory microenvironment of the plaque, disrupting immune regulation and accelerating pathological remodeling. Beyond Circulati...