Platelets in Inflammation and Resolution

Abstract Platelets have long been known for their role in hemostasis. In this, platelet adhesion and activation leads to the formation of a firm thrombus and thus the sealing of a damaged blood vessel. More recently, inflammatory modes of function have been attributed to these non–nuclei-containing cellular fragments. Interaction with leukocytes, secretion of proinflammatory mediators, and migratory behavior are some of the recent discoveries. Nonetheless, platelets also have anti-inflammatory potential by regulating macrophage functions, regulatory T cells, and secretion of proresolving mediators. This review summarizes current knowledge of platelet functions with a special focus on inflammation and resolution of inflammation.