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Related Concept Videos

Alzheimer's Disease: Overview01:26

Alzheimer's Disease: Overview

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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.
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Dementia01:30

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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.
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Nervous tissue is a vital component of the human body's communication system, enabling us to perceive and respond to stimuli. However, like all other tissues, it is vulnerable to disorders and diseases that can significantly impact our neurological functioning.
Homeostatic Imbalances:
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Cognitive enhancers, also known as "smart drugs," are substances used to enhance memory, mental alertness, and concentration. These can be natural or synthetic and improve cognition in conditions like Alzheimer's disease (AD) and other neurodegenerative diseases. Some common examples include caffeine, amphetamines, methylphenidate, modafinil, arecoline, donepezil, vortioxetine, and piracetam. These enhancers work on the principle of synaptic plasticity and altered circuit function.
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Parkinson's Disease: Overview01:15

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Neurodegenerative disorders are progressive diseases that cause irreversible damage and loss to neurons in specific brain areas. Examples of these disorders include Parkinson's disease, Alzheimer's disease, Multiple Sclerosis (MS), and Amyotrophic Lateral Sclerosis (ALS). These disorders share characteristics such as proteinopathies, selective neuronal vulnerability, and a complex interplay between genetic and environmental factors. The primary therapeutic goal for these conditions is...
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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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Update on Major Neurocognitive Disorders.

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Dementia, a progressive cognitive decline, is rising in the aging US population, posing significant public health challenges. Early diagnosis and targeted therapies are crucial for managing neurodegenerative causes like Alzheimer's disease.

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Area of Science:

  • Neurology and Geriatric Medicine
  • Neurodegenerative Diseases
  • Public Health

Background:

  • Dementia is a progressive syndrome impacting cognitive function and daily living.
  • The aging US population faces a projected drastic increase in dementia cases.
  • This demographic shift will escalate healthcare costs and public health burdens.

Purpose of the Study:

  • To review common dementia syndromes and their underlying neurodegenerative causes.
  • To highlight advancements in understanding dementia etiology and diagnosis.
  • To underscore the urgent need for effective disease-modifying therapies.

Main Methods:

  • Review of current literature on dementia syndromes.
  • Examination of prevalent neurodegenerative disorders (Alzheimer's, frontotemporal degeneration, alpha-synucleinopathies).
  • Analysis of recent progress in neuroimaging, genetics, and biomarker development.

Main Results:

  • Neurodegenerative diseases like Alzheimer's are leading causes of dementia.
  • Advances in diagnostics have improved clinical understanding of dementia.
  • Despite progress, effective disease-modifying treatments remain elusive.

Conclusions:

  • Identifying distinct clinico-pathologic profiles is essential for future dementia interventions.
  • Development of reliable biomarkers is critical for clinical trial advancement.
  • Addressing the rising dementia epidemic requires continued research and therapeutic innovation.