Cholesterol Crystals and Inflammation

CRYSTAL ARTHRITIS (MH PILLINGER, SECTION EDITOR)

DOI: 10.1007/s11926-012-0313-z

Cite this article as:
Grebe, A. & Latz, E. Curr Rheumatol Rep (2013) 15: 313. doi:10.1007/s11926-012-0313-z
Part of the following topical collections:
  1. Topical Collection on Crystal Arthritis

Abstract

Chronic vascular inflammation is regarded as a crucial aspect of cardiovascular disease. However, the elicitors of this inflammatory response in the vessel wall are currently not well understood. Excessive amounts of cholesterol, an abundant and fundamental lipid molecule in mammalian cells, can initiate the development and progression of atherosclerosis. Accumulation of cholesterol in early atherosclerotic lesions results in the formation of macrophage foam cells, and crystalline cholesterol is found as a characteristic of advanced atherosclerotic plaques. Cholesterol crystals can activate the NLRP3 inflammasome, a multimolecular signaling complex of the innate immune system, resulting in caspase-1 mediated activation and secretion of proinflammatory interleukin-1 family cytokines. Furthermore, crystalline cholesterol is believed to induce plaque rupture by physical disruption of the fibrous cap covering atherosclerotic lesions. Here we review the effect of cholesterol deposition and crystallization on inflammatory responses in cardiovascular diseases.

Keywords

Cholesterol crystalsInflammationNLRP3 inflammasomeAtherosclerosisCardiovascular diseaseSerum proteins

Copyright information

© Springer Science+Business Media New York 2013

Authors and Affiliations

  1. 1.Institute of Innate ImmunityUniversity Hospitals BonnBonnGermany
  2. 2.Division of Infectious Diseases and ImmunologyUniversity of Massachusetts Medical SchoolWorcesterUSA
  3. 3.German Center for Neurodegenerative DiseasesBonnGermany