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Updated: Aug 28, 2025

Microfluidics in Assessing Platelet Function
Published on: November 8, 2024
Hypericum perforatum and Its Potential Antiplatelet Effect
Maria-do-Céu Monteiro1, Alberto C P Dias2, Daniela Costa2
1TOXRUN-CESPU Toxicology Research Unit, University Institute of Health Sciences, CESPU, CRL, 4585-116 Gandra, Portugal.
Background:
Hypericum perforatum (HP) is currently one of the most consumed medicinal plants in the world. In traditional Chinese medicine, the herb hypericum (Guan Ye Lian Qiao) belongs to the group of plants that clarify heat. It is also used to treat various types of infection and inflammation. In contrast to the extensive literature on the antidepressant effects of HP, little is known about its action on platelets. The main objective of this work was to investigate the possible relevance of HP to platelet function.
Methods:
We characterized the profile of platelet activation in the presence of HP extracts through an evaluation of molecular markers by flow cytometry: mobilization of intracellular Ca++ and expression of platelet receptors such as activated GPIIbIIIa and P-selectin (CD62).
Results:
The results indicated a possible inhibitory effect of HP on the platelet activation response, which could be explained by the effect on intracellular calcium mobilization and the expression of activated GPIIbIIIa receptors. Despite of the limitations of an in vitro study, our results provide evidence of the possible mechanisms of action of HP.
Conclusions:
Further studies are needed to elucidate the effect of HP on hemostasis, but it may be recognized as a substance with antiplatelet properties.
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