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Blood Studies for Cardiovascular System I: Cardiac Biomarkers01:20

Blood Studies for Cardiovascular System I: Cardiac Biomarkers

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Cardiac biomarkers are enzymes, proteins, and hormones released into the blood when cardiac cells are injured. They are powerful tools for triaging.
The essential diagnostic tools for detecting myocardial necrosis and monitoring individuals suspected of having acute coronary syndrome (ACS) include:
Troponins
Troponins, particularly cardiac troponins I and T, are the most precise and sensitive markers of myocardial injury. They are detectable within 4-6 hours of myocardial injury and remain...
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Blood Studies for Cardiovascular System II: CRP, Hcy, and Cardiac Natriuretic Peptide Markers01:19

Blood Studies for Cardiovascular System II: CRP, Hcy, and Cardiac Natriuretic Peptide Markers

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Cardiac biomarkers are critical in diagnosing, prognosing, and managing cardiovascular diseases. Routine measurement of specific biomarkers such as B-type natriuretic peptide (BNP), C-reactive protein (CRP), and homocysteine (Hcy) is common practice in clinical settings to evaluate heart function and predict cardiovascular events.
These markers indicate stress or strain on the heart muscle:
Natriuretic Peptides (BNP)
Cardiac myocytes produce these hormones in response to ventricular stretching...
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Video Experimental Relacionado

Updated: Jan 7, 2026

Dried Blood Spot Collection of Health Biomarkers to Maximize Participation in Population Studies
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Biomarcadores

Yajing Zhu1, Bing Zhang1

  • 1Nanjing Drum Tower Hospital, Affiliated Hospital Clinical College of Nanjing Medical University, Nanjing, Jiangsu, China.

Alzheimer's & dementia : the journal of the Alzheimer's Association
|December 25, 2025
PubMed
Resumen
Este resumen es generado por máquina.

Los modelos de aprendizaje profundo pueden predecir la actividad cerebral durante tareas olfativas utilizando resonancia magnética funcional en reposo en personas con deterioro cognitivo subjetivo (SCD). Este enfoque ayuda a comprender los cambios olfativos tempranos de la enfermedad de Alzheimer (EA) y los mecanismos neuronales.

Palabras clave:
aprendizaje profundoresonancia magnética funcional en reposodeterioro cognitivo subjetivoenfermedad de Alzheimerfunción olfativaneuroimagenbiomarcadores

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Área de la Ciencia:

  • Neuroimaging
  • Artificial Intelligence
  • Cognitive Science

Sus antecedentes:

  • Olfactory dysfunction is an early clinical symptom of Alzheimer's Disease (AD), linked to cognitive decline.
  • Subjective cognitive decline (SCD) represents an at-risk group for early-stage AD.
  • Acquiring olfactory task-based fMRI data is challenging.

Objetivo del estudio:

  • To predict brain activity during olfactory tasks in SCD individuals using resting-state fMRI (rs-fMRI).
  • To understand early olfactory function changes in AD and their neural underpinnings.
  • To leverage deep learning for analyzing large-scale rs-fMRI data.

Principales métodos:

  • Utilized an end-to-end deep learning model.
  • Predicted functional activity of olfactory neural circuits based on rs-fMRI data.
  • Assessed prediction accuracy using Pearson correlation coefficient (r).

Principales resultados:

  • Achieved significant individual prediction accuracy (r = 0.879, p < 0.001).
  • Demonstrated significant group prediction accuracy (r = 0.470, p = 0.02).
  • Confirmed strong correlation between predicted and actual activation z-scores.

Conclusiones:

  • The deep learning model effectively predicts brain activity in response to odor stimulation in SCD individuals.
  • This method offers a viable approach for investigating olfactory function mechanisms using large-sample rs-fMRI data.
  • Provides insights into early neural changes associated with AD risk.