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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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Association Areas of the Cortex01:21

Association Areas of the Cortex

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Association areas are regions of the cerebral cortex that do not have a specific sensory or motor function. Instead, they integrate and interpret information from various sources to enable higher cognitive processes such as memory, learning, and decision-making. Some key association areas include the following:
Prefrontal Association Area: This area is located in the frontal lobe and is involved in planning, decision-making, and moderating social behavior. It connects with primary motor areas,...
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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.
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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Prosopagnosia, also known as face blindness, is the inability to recognize faces. In severe cases, individuals with prosopagnosia may not recognize close family members, including parents and spouses, by their faces. For instance, someone with prosopagnosia might walk past their child in a crowd, only realizing their mistake upon noticing their child's distinctive backpack or favorite jacket. Prosopagnosia specifically impairs facial recognition, while the recognition of other objects or...
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The cerebellum, while traditionally associated with motor control, also plays a crucial role in memory, particularly in procedural memory, which involves learning motor tasks that become automatic through repetition. For example, studies have shown that when the cerebellum is damaged, individuals or animals lose the ability to learn conditioned motor responses, such as the conditioned eye-blink response in classical conditioning experiments with rabbits. This study demonstrates the...
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フロントテンポラル認知症

Jee Bang1, Salvatore Spina1, Bruce L Miller1

  • 1Memory and Aging Center, University of California, San Francisco, San Francisco, CA, USA.

Lancet (London, England)
|November 24, 2015
PubMed
まとめ
この要約は機械生成です。

フロントテンポラル認知症 (FTD) は,行動,実行機能,または言語に影響を与える神経変性疾患のグループで,65歳未満で一般的です. 診断の進歩により FTDと精神疾患の区別が良くなり 標的型療法への道が開けています

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科学分野:

  • 神経学
  • 神経科学
  • 遺伝学

背景:

  • フロントテンポラル認知症 (FTD) は,進行的な行動,実行機能,または言語の欠陥によって特徴づけられる臨床的症候群です.
  • 65歳未満の人の認知症の一般的な原因です.
  • FTDの行動症状は 精神疾患を模倣し 診断を複雑にします

研究 の 目的:

  • フロントテンポラル認知症 (FTD) の概要
  • FTDと精神疾患の区別における診断上の課題と最近の進歩を強調する.
  • FTDの分子基盤を理解することで将来の治療法への影響について議論する.

主な方法:

  • FTDの臨床,イメージング,分子特性のレビュー
  • FTDにおける神経病理学的発見の分析,前頭皮質と側頭皮質の変性に焦点を当てた.
  • FTDの病因における遺伝子の役割の検討

主要な成果:

  • FTDには,選択的な前頭皮質と側頭皮質の変性を引き起こす様々な神経病理学的な要素が含まれています.
  • 遺伝的要因はFTDの発症の重要な危険因子です.
  • 診断の精度が向上し,精神疾患との差異が良くなる.

結論:

  • 臨床,画像,分子特徴の進歩により,FTDの診断の正確性が向上しています.
  • FTDの分子基盤を理解することは,標的の治療戦略の開発に不可欠です.
  • 正確な診断は,FTDを精神疾患と区別し,適切な治療を開始する鍵です.