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Chronic Kidney Disease II: Clinical Manifestations01:24

Chronic Kidney Disease II: Clinical Manifestations

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Chronic Kidney Disease (CKD) progressively impairs multiple body systems due to the accumulation of uremic toxins, which disrupt cellular functions across various organs.Neurologic symptomsNeurologic symptoms often arise early in CKD, as uremic toxin buildup drives changes in cognitive and motor functions. Patients frequently experience fatigue, headache, confusion, difficulty concentrating, and, in severe cases, seizures. Peripheral neuropathy commonly manifests as burning sensations in the...
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Coronary Artery Disease III: Clinical Manifestations01:30

Coronary Artery Disease III: Clinical Manifestations

299
Coronary Artery Disease (CAD) is a primary health risk worldwide, leading to significant morbidity and mortality. The condition arises from the buildup of atherosclerotic plaques within the coronary arteries, resulting in diminished blood supply to the heart muscle.The clinical manifestations of CAD vary widely, from asymptomatic stages to severe, life-threatening conditions. Understanding these manifestations is crucial for early diagnosis and effective management.Angina Pectoris: The Warning...
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Endocarditis II: Clinical Features of Infective Endocarditis01:25

Endocarditis II: Clinical Features of Infective Endocarditis

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Endocarditis can present various clinical features depending on the causative organism and the patient's underlying health conditions. Initially, the clinical features of infective endocarditis develop gradually, presenting with nonspecific symptoms that can be easily mistaken for other illnesses.General SymptomsEarly symptoms of infective endocarditis are fever, chills, weakness, malaise, fatigue, and weight loss. These symptoms reflect the systemic nature of the infection and the body's...
364
Heart Failure III: Clinical Manifestations01:26

Heart Failure III: Clinical Manifestations

436
Heart failure (HF) manifests primarily as dyspnea, fatigue, and fluid retention, resulting in peripheral and pulmonary edema. Symptoms may vary depending on which ventricle is more affected, left or right.Left-Sided Heart FailureAlso known as left ventricular failure, this condition results from the left ventricle's inability to fill or eject sufficient blood into the systemic circulation. It leads to pulmonary congestion, which occurs when the left ventricle fails to eject blood effectively...
436
Gastroesophageal Reflux Disease II: Clinical Features and Management01:29

Gastroesophageal Reflux Disease II: Clinical Features and Management

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Gastroesophageal reflux disease, or GERD, is a persistent medical condition that affects many individuals worldwide. Its clinical manifestations can vary greatly, making diagnosis and management challenging for healthcare professionals. The following is a comprehensive overview of the clinical manifestations, assessment, and management strategies for GERD.
Clinical Manifestations
GERD presents itself in a multitude of ways, with symptoms varying from person to person. The hallmark symptoms are...
652
Hypertension III: Clinical Manifestations and Diagnostic Studies01:30

Hypertension III: Clinical Manifestations and Diagnostic Studies

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Hypertension is asymptomatic and also referred to as the "silent killer" until it progresses to a severe stage or causes target organ disease. Patients may experience symptoms stemming from the strain on blood vessels and tissues in various organs or the heart's increased workload.Physical exams might show no abnormalities other than high blood pressure. Signs of vascular damage, when present, correspond to the organs supplied by the affected vessels, leading to target organ damage. For...
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Updated: Jan 7, 2026

A Metadata Extraction Approach for Clinical Case Reports to Enable Advanced Understanding of Biomedical Concepts
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臨床症状

Siddharth Nayak1, Mark E Wagshul1, Roee Holtzer2

  • 1Albert Einstein College of Medicine, New York, NY, USA.

Alzheimer's & dementia : the journal of the Alzheimer's Association
|December 26, 2025
PubMed
まとめ
この要約は機械生成です。

軽度認知障害(MCI)は、高齢者の脳ネットワークと認知機能に影響を与える。これらの変化を理解することは、早期のアルツハイマー病の検出と介入戦略にとって重要である。

キーワード:
軽度認知障害脳ネットワーク認知機能アルツハイマー病神経画像

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Last Updated: Jan 7, 2026

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科学分野:

  • 神経画像; 認知神経科学; 老年医学

背景:

  • アルツハイマー病(AD)の研究は、正常な老化から軽度認知障害(MCI)への移行、特に前臨床段階に焦点を当てている。MCIの有無にかかわらず、脳と認知の関連を特徴づけることは、早期ADの病態生理を理解するために不可欠である。本研究では、MCIの有無を考慮して、高齢者の機能的脳ネットワークの変化を調査する。

研究 の 目的:

  • 軽度認知障害(MCI)が、MCIの有無にかかわらず高齢者の脳と行動の関係にどのように影響するかを調べること。MCIの有無にかかわらず、認知処理速度(Symbol Digit Modalities Test - SDMT)に関連する特定の脳ネットワークを特定すること。アルツハイマー病の前臨床段階における機能的結合パターンを探索すること。

主な方法:

  • 167人の高齢者(MS 82人、対照群85人)が安静時機能的MRI(rsfMRI)および構造的MRIを受けた。グループ独立成分分析(ICA)により脳ネットワークを特定し、デュアル回帰を介して被験者ごとの発現を導出した。多重線形回帰により、ネットワーク発現スコアとSDMTパフォーマンスの関連を分析した。

主要な成果:

  • 全体サンプルでは、SMN、LFPN、および顕著性ネットワークがSDMTパフォーマンスと関連していた。MSを有する個人では、SMNおよび内側視覚ネットワークがSDMTと相関していた。対照群では有意な関連は見られなかった。MCI参加者を除外すると、LFPNおよびRFPNネットワークがSDMTとの関連を示した。MCIのない対照群では、RFPN、LFPN、および顕著性ネットワークがSDMTと関連していた。

結論:

  • MCIの有無は、高齢者の脳と認知の関連に有意に影響する。本研究結果は、アルツハイマー病の前臨床段階における動的な機能的結合の変化を強調する。本研究は、早期AD検出のための神経生物学的マーカーに関する洞察を提供する。