臨床症状
Aryan Verma1,2, Junyeon Won2,3, Tsubasa Tomoto2,3
1University of Texas at Dallas, Richardson, TX, USA.
Alzheimer's & dementia : the journal of the Alzheimer's Association
|December 24, 2025
まとめ
動脈硬化の亢進は、脳接続性の変化を通じて軽度認知障害の認知機能を悪化させる可能性がある。血管の健康状態への介入は、高齢者集団における認知機能低下の予防に不可欠である。
科学分野:
- 神経科学; 心臓病学; 老年医学
背景:
- 中心動脈硬化の亢進は、健忘性軽度認知障害(aMCI)および認知症の既知のリスク因子である。; 血管の健康状態とaMCI患者の認知機能低下を結びつける正確なメカニズムは、完全には理解されていない。
研究 の 目的:
- 中心動脈硬化、デフォルトモードネットワーク機能的結合性(DMN-FC)、および軽度認知障害(aMCI)を有する個人の認知機能との関係を調査する。; 動脈硬化と認知機能障害との関連におけるDMN-FCの潜在的な媒介的役割を探求する。
主な方法:
- 健常成人およびaMCI患者(55〜80歳)を対象とした横断研究。; 中心動脈硬化は、頸動脈-大腿動脈間脈波伝播速度(cfPWV)および頸動脈β硬度指数を用いて測定した。; デフォルトモードネットワーク機能的結合性(DMN-FC)は、安静時fMRIを用いて評価し、後部帯状皮質(PCC)をシードとした。; 認知機能は、カリフォルニア言語学習テスト(CVLT)およびウィスコンシンカードソーティングテスト(WCST)を用いて評価した。
主要な成果:
- 高頸動脈β硬度指数は、aMCI群におけるCVLTおよびWCSTの成績不良と関連していた。; PCCと右前頭回(PcG)間のDMN-FCの増加は、aMCI患者におけるCVLT成績不良と相関していた。; PCCと右PcG間のDMN-FCは、aMCI群における高頸動脈β硬度指数とCVLT成績不良との関連を著しく媒介していた。
結論:
- 中心動脈硬化の亢進は、DMN機能的結合性の変化を通じて、aMCI患者の認知成績に悪影響を与える可能性がある。; これらのDMNの変化は、血管の変化に対する代償メカニズムを表す可能性がある。; 血管の健康状態を維持することは、特に認知症のリスクがある高齢者において、認知機能低下を予防または遅延させるために不可欠である。
関連する概念動画
Chronic Kidney Disease II: Clinical Manifestations
516
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...
516
Coronary Artery Disease III: Clinical Manifestations
295
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...
295
Endocarditis II: Clinical Features of Infective Endocarditis
358
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...
358
Heart Failure III: Clinical Manifestations
430
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...
430
Gastroesophageal Reflux Disease II: Clinical Features and Management
647
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...
Clinical Manifestations
GERD presents itself in a multitude of ways, with symptoms varying from person to person. The hallmark symptoms are...
647
Hypertension III: Clinical Manifestations and Diagnostic Studies
433
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...
433


