Association of platelet activation with vascular cognitive impairment: implications in dementia development?

Konstantinos Stellos, Niki Katsiki, Prokopia Tatsidou

  • 1Department of Internal Medicine III - Cardiology and Molecular Cardiology, Goethe University of Frankfurt, Theodor-Ster-Kai 7, Frankfurt/Main D-60590, Germany. konstantinos.stellos@kgu.de.

Insights

Cardiovascular risk factors are linked to coronary artery disease and cognitive decline. Higher platelet activation in coronary artery disease patients predicts cognitive impairment severity, suggesting a potential therapeutic target.

Area of Science:

  • Cardiovascular medicine
  • Neurology
  • Hematology

Background:

  • Cardiovascular risk factors are linked to coronary artery disease (CAD) and cognitive dysfunction.
  • The exact mechanisms connecting these conditions are not fully understood.

Purpose of the Study:

  • To investigate the role of platelet activation in cognitive impairment among patients with coronary artery disease (CAD).
  • To explore the potential link between platelet hyperactivity and dementia, including Alzheimer's disease.

Main Methods:

  • Compared platelet activation levels in CAD patients with and without cognitive impairment.
  • Analyzed platelet activity as a predictor of cognitive impairment severity.

Main Results:

  • CAD patients with cognitive impairment exhibited significantly higher platelet activation than those without.
  • Platelet activity was identified as a significant independent predictor of cognitive impairment severity in CAD patients.

Conclusions:

  • Elevated platelet activation may play a role in the cognitive dysfunction observed in CAD patients.
  • Platelet hyperactivity could be a potential therapeutic target for managing cognitive decline and dementia, including Alzheimer's disease.

Related Concept Videos

Dementia l: Introduction01:22

Dementia l: Introduction

Dementia is an acquired, progressive syndrome characterized by a decline in multiple cognitive domains severe enough to impair daily functioning and reduce independence. Although memory loss is a central feature, the diagnosis requires additional deficits involving language, executive function, visuospatial skills, judgment, calculation, or abstract reasoning. These cognitive impairments reflect underlying neurodegenerative or vascular processes that gradually disrupt neuronal networks...
Formation of the Platelet Plug01:22

Formation of the Platelet Plug

The platelet phase, the second stage of hemostasis, commences around 15-20 seconds after an injury. It follows and overlaps with the vascular phase, during which blood vessels constrict to minimize blood loss.
As the injured blood vessel contracts, endothelial cells undergo contraction, revealing collagen fibers in the basement membrane and underlying connective tissue. Furthermore, the plasma membrane of endothelial cells becomes adhesive, preparing the site for platelet adhesion. Platelets...
Alzheimer Disease l: Introduction01:29

Alzheimer Disease l: Introduction

Alzheimer disease is a chronic, progressive, and irreversible neurodegenerative disorder and the most common cause of dementia in older adults. It leads to gradual neuronal loss, causing cognitive decline, behavioral changes, and loss of functional independence.Risk Factors and EtiologyThe disease is multifactorial. Age is the strongest risk factor, with prevalence doubling every 5 years after age 65. Genetic factors include mutations in genes such as APP, PSEN1, and PSEN2, which are associated...
Dementia01:30

Dementia

Dementia is a collective term for cognitive disorders primarily affecting memory, thinking, and reasoning. It is not a specific disease but a syndrome, with Alzheimer's disease being the most common cause, accounting for approximately 60-80% of cases. Other types include vascular dementia, Lewy body dementia, and frontotemporal dementia. Dementia affects millions worldwide, particularly older adults, though it is not a normal part of aging.
The progression of dementia is generally gradual.
Alzheimer Disease ll: Pathophysiology01:23

Alzheimer Disease ll: Pathophysiology

Alzheimer disease involves structural changes in the brain that begin long before symptoms appear. The most distinctive features are extracellular neuritic plaques and intracellular neurofibrillary tangles.Neuritic plaques form in the cerebral cortex and around blood vessels. These plaques contain a dense core of beta-amyloid (Aβ)—a toxic protein fragment that clumps outside neurons. The core is surrounded by damaged neuronal extensions, as well as reactive astrocytes and microglia. Abnormal...
Alzheimer's Disease: Overview01:26

Alzheimer's Disease: Overview

Alzheimer's Disease (AD) is a continually advancing neurodegenerative disorder, distinguished by escalating memory loss, cognitive dysfunction, and dementia. The disease unfolds in three stages: preclinical, mild cognitive impairment (MCI), and dementia. Its onset is insidious, and the progression gradual, with the cause not well explained by other disorders.
The clinical diagnosis of AD hinges on the presence of memory and other cognitive impairments. Biomarkers, such as changes in Aβ and tau...