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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

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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...
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Heart Failure III: Clinical Manifestations01:26

Heart Failure III: Clinical Manifestations

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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...
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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...
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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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Video Experimental Relacionado

Updated: Jan 7, 2026

A Metadata Extraction Approach for Clinical Case Reports to Enable Advanced Understanding of Biomedical Concepts
07:50

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

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Manifestaciones Clínicas

Ramit Ravona-Springer1,2,3, Shiraz Vered4, Abigail Livny3,5,6,7

  • 1Geriatric psychiatry and memory unit, Sheba Medical Center, Ramat Gan, Israel.

Alzheimer's & dementia : the journal of the Alzheimer's Association
|December 26, 2025
PubMed
Resumen
Este resumen es generado por máquina.

La integridad reducida de la sustancia blanca en áreas cerebrales específicas se relaciona con mayores síntomas depresivos en personas de mediana edad con alto riesgo de enfermedad de Alzheimer y trastornos relacionados (ADRD). Esto sugiere que los cambios en la sustancia blanca pueden ser marcadores tempranos de neurodegeneración.

Palabras clave:
sustancia blancadepresiónAlzheimerneurodegeneraciónneuroimagen

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Área de la Ciencia:

  • Neuroimagen
  • Enfermedades Neurodegenerativas
  • Salud Mental

Sus antecedentes:

  • La integridad reducida de la sustancia blanca puede preceder a otros hallazgos de neuroimagen en personas con riesgo de enfermedad de Alzheimer y trastornos relacionados (ADRD).
  • Esta pérdida de integridad podría estar involucrada en el desarrollo y las consecuencias de la depresión.
  • Investigar este vínculo en personas de mediana edad con alto riesgo puede revelar marcadores tempranos de neurodegeneración.

Objetivo del estudio:

  • Examinar la relación entre la integridad de la sustancia blanca y los síntomas depresivos.
  • Identificar posibles marcadores tempranos de neurodegeneración en personas con alto riesgo de ADRD.

Principales métodos:

  • Se utilizó imágenes de tensor de difusión (DTI) para evaluar la integridad de la sustancia blanca (anisotropía fraccional y difusividad media).
  • La escala de Depresión del Centro de Estudios Epidemiológicos (CESD) midió los síntomas depresivos.
  • Se analizaron asociaciones en 301 descendientes de pacientes con ADRD cognitivamente normales utilizando modelos de regresión lineal y logística.

Principales resultados:

  • Una mayor anisotropía fraccional (FA) en el genu y el cíngulo se asoció con puntuaciones más bajas en la escala CESD.
  • Un aumento de la FA en estas áreas también se correlacionó con una disminución de las probabilidades de depresión clínica.
  • No se encontraron asociaciones significativas entre otros tractos de sustancia blanca o la difusividad media (MD) y los síntomas depresivos.

Conclusiones:

  • La integridad alterada de la sustancia blanca en tractos específicos se relaciona con síntomas depresivos en personas de mediana edad con mayor riesgo de ADRD.
  • Estas alteraciones de la sustancia blanca pueden servir como biomarcadores tempranos de neurodegeneración.
  • Los hallazgos sugieren el potencial de estrategias de intervención y prevención oportunas dirigidas a la salud de la sustancia blanca.