The nonhemostatic immune functions of platelets.
Platelets are megakaryocyte-derived cellular fragments, which lack a nucleus and are the smallest circulating cells and are classically known to have a major role in supporting hemostasis. Apart from this well-established role, it is now becoming evident that platelets are also capable of conveying other important functions, such as during infection and inflammation. This paper will outline these nonhemostatic functions in two major sections termed "Platelets versus pathogens" and "Platelet-target cell communication". Platelets actively contribute to protection against invading pathogens and are capable of regulating immune functions in various target cells, all through sophisticated and efficient mechanisms. These relatively novel features will be highlighted, illustrating the multifunctional role of platelets in inflammation.
Toronto Platelet Immunobiology Group, Keenan Research Centre for Biomedical Science, St. Michael׳s Hospital, Canadian Blood Services, Toronto, Ontario, Canada.
Rick
R
Kapur
Toronto Platelet Immunobiology Group, Keenan Research Centre for Biomedical Science, St. Michael׳s Hospital, Canadian Blood Services, Toronto, Ontario, Canada; Departments of Pharmacology, Medicine, and Laboratory Medicine and Pathobiology, University of Toronto, Toronto, Ontario, Canada. Electronic address: semplej@smh.ca.
John W
JW
Semple
D001792:Blood Platelets / Q000276:immunology*; D006487:Hemostasis / Q000276:immunology*; D006801:Humans; D007249:Inflammation / Q000276:immunology*
Chemokines; Cytokines; Immunity; Infections; Inflammation; Platelets