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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: Treatment01:22

Alzheimer's Disease: Treatment

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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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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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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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Amyloid Fibrils03:03

Amyloid Fibrils

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Amyloid fibrils are aggregates of misfolded proteins.  Under most circumstances, misfolded proteins are either refolded by chaperone proteins or degraded by the proteasome. However, in the case of a mutation or a disease, these proteins can accumulate to form large clusters and often further assemble to form elongated fibers, called fibrils. 
Amyloid deposits were observed as early as 1639 in the liver and the spleen.   In 1854, Rudolph Virchow performed iodine staining,...
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Role of Neurotransmitters in Memory01:23

Role of Neurotransmitters in Memory

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Neurotransmitters are integral to the brain's communication system, enabling neurons to transmit signals across synapses. This chemical exchange underpins various cognitive functions, including memory processes. The role of neurotransmitters in memory is multifaceted, influencing the encoding, consolidation, and retrieval of memories through their action on different neural circuits.
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Hybrid PET/MRI Imaging of Alzheimer's Disease Based on 18F-AV-1451
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アルツハイマー病

Philip Scheltens1, Bart De Strooper2, Miia Kivipelto3

  • 1Alzheimer Centre Amsterdam, Amsterdam University Medical Centers, Amsterdam, Netherlands; Department of Neurology, Amsterdam University Medical Centers, Amsterdam, Netherlands; Life Science Partners, Amsterdam, Netherlands.

Lancet (London, England)
|March 5, 2021
PubMed
まとめ
この要約は機械生成です。

アルツハイマー病 (AD) は 世界的に懸念される病気で 罹患率が高く 遺伝的関連が強いのです バイオマーカーによる早期発見と 潜在的なライフスタイルの介入は ADの進行管理に希望を与えます

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Motor and Hippocampal Dependent Spatial Learning and Reference Memory Assessment in a Transgenic Rat Model of Alzheimer's Disease with Stroke
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Detection of Neuritic Plaques in Alzheimer's Disease Mouse Model
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Motor and Hippocampal Dependent Spatial Learning and Reference Memory Assessment in a Transgenic Rat Model of Alzheimer's Disease with Stroke
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科学分野:

  • 神経学
  • ゲロントロジー
  • 遺伝学

背景:

  • アルツハイマー病 (AD) の罹患率はヨーロッパで倍になり,世界では2050年までに3倍になると予測されています.
  • アルツハイマー病の初期の細胞段階には,アミロイドβの蓄積とタウ病変の広がりがあります.
  • 遺伝性はADリスクの60~80%を占め,APOEアレルは重要な遺伝因子である.

研究 の 目的:

  • 最近のアルツハイマー病の研究成果をまとめます
  • ADの新たな診断バイオマーカーと治療戦略について議論する.
  • ADの発達と管理における遺伝学とライフスタイルの役割を強調する.

主な方法:

  • アルツハイマー病に関する最新の文献とセミナーの調査結果
  • 認知症の流行に関する疫学データの分析
  • APOEアレルを含む遺伝的危険因子の検査
  • アミロイドベータとリン酸化タウの新しいバイオマーカー (PETスキャン,プラズマアッセイ) の評価
  • 臨床試験における多領域ライフスタイル介入と薬理学的治療の評価

主要な成果:

  • 世界中で認知症の有意な増加
  • ADの遺伝的リスクロシウムの40以上を特定し,APOEアレルは最も強い関連性を示しています.
  • ADの早期発見とモニタリングのための新しいバイオマーカーの有望な結果
  • マルチドメインのライフスタイルの介入による認知的利益を示唆する証拠
  • 抗アミロイドβ,抗タウ,抗炎症薬の臨床試験における進歩

結論:

  • アルツハイマー病は公衆衛生面での 重要な問題であり,ますます深刻化しています.
  • 先進的なバイオマーカーと 潜在的遺伝的洞察による早期発見は ADの管理に不可欠です
  • ライフスタイルの介入は,ADのリスクのある個人の認知健康に利益をもたらす可能性があります.
  • 重要な病理的経路を標的とした新薬治療は,将来のAD治療に希望を示しています.