Abstract

Numerous studies showing platelets' role in mechanisms beyond hemostasis have sparked interest in investigating all the pathways in which they may be involved. A growing body of evidence indicates that platelets play a key role in immune response. Platelets carry various membrane receptors and release many bioactive molecules that recruit and activate immune cells. Consequently, platelets have a significant immunoregulatory role in infectious, inflammatory, and degenerative diseases. Moreover, immune cells contribute to neuronal development, neural plasticity, and neuroglial activation. The interaction between platelets and immune cells reveals an additional regulatory mechanism of brain function. This review explores the relationship between platelets and the central nervous system (CNS). It highlights the role of platelets in the development of severe neurodegenerative and neuropsychiatric diseases, such as Alzheimer's disease (AD), Parkinson's disease (PD), multiple sclerosis (MS) and depression.

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