Accelerated Atherosclerosis in SLE: Mechanisms, Consequences, and Future Directions

Abstract

The bimodal mortality rate in systemic lupus erythematosus (SLE) has been well documented, with atherosclerosis identified as a leading cause of late-stage death. Multiple mechanisms are responsible for accelerated atherosclerosis in SLE, ultimately resulting in endothelial dysfunction, arterial stiffness, arterial wall thickening, and plaque formation. This leads to an increased risk of coronary artery disease, cardiovascular events, cerebrovascular accidents, and peripheral arterial disease. SLE patients are not only impacted by traditional risk factors for cardiovascular disease (age, smoking, dyslipidemia, diabetes), but additionally nontraditional risk factors (prolonged corticosteroid use, disease activity and chronic inflammation). Identifying the impact of traditional risk factors and mediating nontraditional risk factors in SLE are vital to reduce morbidity and mortality related to atherosclerosis. SLE-specific screening methods should be established in the routine care of these patients, including the use of validated modified risk scores and imaging modalities. Furthermore, the utility of disease-specific biomarkers and anti-atherosclerotic therapies should be elicited. This chapter will provide an overview of considerations for the mechanisms, impact, and prevention of atherosclerosis in SLE patients.