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Related Concept Videos

Dementia01:30

Dementia

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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....
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Alzheimer's Disease: Overview01:26

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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...
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Alzheimer's Disease (AD), a neurodegenerative disorder, is pathologically identified by amyloid plaques and neurofibrillary tangles composed of tau protein. AD pharmacotherapy aims to manage cognitive symptoms, delay disease progression, and treat behavioral symptoms. The treatment is primarily symptomatic and palliative, with no definitive disease-modifying therapy available. Cholinesterase inhibitors, including donepezil (Aricept), rivastigmine (Exelon), and galantamine (Razadyne), are...
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Regulation of Stroke Volume01:27

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The regulation of stroke volume, which is the amount of blood the heart pumps out during each heartbeat, is critical for maintaining a healthy circulatory system. Stroke volume is influenced by three main factors: preload, contractility, and afterload.
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Vascular Spasm01:16

Vascular Spasm

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The vascular phase, also known as vasospasm, is the initial stage of hemostasis, crucial for preventing excessive bleeding when a blood vessel is injured. After a vessel is cut, nerves in the damaged area trigger pain and other sensory impulses. Simultaneously, the smooth muscles in the vessel wall contract, resulting in a vascular spasm. This contraction reduces the vessel's diameter at the injury site, slowing or stopping blood loss through the vessel wall. Vascular spasms typically last...
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Cognitive Development During Adulthood

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Cognitive development continues throughout adulthood, undergoing significant shifts across early, middle, and late stages. Individual transition occurs from adolescent idealism to pragmatic and adaptable thinking in early adulthood. During this period, individuals learn to integrate personal beliefs with the recognition that other perspectives are equally valid. Exposure to the complexities of modern society, diverse experiences, and higher education contribute to this adaptive thought process,...
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Related Experiment Video

Updated: Mar 5, 2026

Author Spotlight: Modeling Vascular Contributions to Alzheimer's Disease in Transgenic Mice
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[Vascular dementia].

Kristian Steen Frederiksen1

  • 1kristian.steen.frederiksen@regionh.dk.

Ugeskrift for Laeger
|March 24, 2017
PubMed
Summary

Vascular dementia, a common brain disorder from cerebrovascular disease, remains poorly understood. Future research should identify distinct subtypes to improve treatment development for this heterogeneous condition.

Area of Science:

  • Neurology
  • Neuroscience
  • Pathology

Background:

  • Vascular dementia encompasses diverse clinical and neuropathological presentations of cerebrovascular disease leading to dementia.
  • It is a prevalent condition, yet significant knowledge gaps persist regarding its underlying mechanisms and progression.
  • Existing research highlights the heterogeneity of vascular dementia, complicating diagnosis and treatment.

Purpose of the Study:

  • To propose an overarching disease concept for vascular dementia that integrates pre-dementia stages.
  • To address the clinical and neuropathological heterogeneity inherent in vascular dementia.
  • To guide future research toward identifying specific subtypes for targeted therapeutic development.

Main Methods:

  • Review and synthesis of current literature on vascular dementia.

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  • Analysis of proposed diagnostic and conceptual criteria for vascular dementia.
  • Discussion of neuropathological findings and clinical presentations.

    • Main Results:

    • Vascular dementia presents a complex spectrum of cerebrovascular disease-related cognitive impairment.
    • A unified disease concept is proposed to encompass the heterogeneity and pre-dementia phases.
    • The need for subtype identification based on distinct pathophysiological mechanisms is emphasized.

    Conclusions:

    • Vascular dementia is a complex, heterogeneous condition requiring a refined conceptual framework.
    • Further research is crucial for delineating specific vascular dementia subtypes.
    • Identifying distinct pathophysiological mechanisms is key to advancing treatment strategies for vascular dementia.