Hamostaseologie 2026; 46(01): 044-052
DOI: 10.1055/a-2755-7600
Review Article

The Role of Platelets Beyond Hemostasis

Authors

  • Friedrich Reusswig

    1   Center for Thrombosis and Hemostasis, University Medical Center of the Johannes Gutenberg University Mainz, Mainz, Germany
  • Carsten Deppermann

    1   Center for Thrombosis and Hemostasis, University Medical Center of the Johannes Gutenberg University Mainz, Mainz, Germany
    2   Research Center for Immunotherapy, University Medical Center of the Johannes Gutenberg University Mainz, Mainz, Germany

Funding F.R. is supported by a grant of the ReALity initiative of the state of Rhineland Palatinate. C.D. is supported by the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) – Project-ID (318346496–SFB 1292) and the DFG Emmy Noether Program (DE 2654/2–1) as well by the Federal Ministry of Research, Technology and Space (BMFTR), grant number 03ZU1202GA.

Abstract

Platelets, small anucleate cells derived from megakaryocytes, are key drivers of hemostasis and thrombosis. There is accumulating evidence, however, that platelets play roles beyond thrombosis and hemostasis, especially in inflammation, infection, and tissue regeneration. They can recruit, stimulate, and modulate immune cells by direct interaction or via the release of soluble factors. During inflammation, platelets maintain vascular integrity in the lung, skin, and brain through interactions of their GPVI, CLEC-2, and GPIb receptors as well as factors released from α-granules and dense granules. They cooperate with monocytes and macrophages to fight bacteria in the bloodstream and in the liver where they accumulate on Kupffer cell–bacteria complexes to support pathogen destruction. Upon liver damage, platelets adhere to the liver sinusoids and release bioactive molecules like serotonin and fibrinogen to support reparative processes. Here, we provide a review of some of the multiple roles of platelets beyond their classical role in hemostasis.



Publication History

Received: 30 October 2025

Accepted: 23 November 2025

Article published online:
17 February 2026

© 2026. Thieme. All rights reserved.

Georg Thieme Verlag KG
Oswald-Hesse-Straße 50, 70469 Stuttgart, Germany