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Blood Studies for Cardiovascular System I: Cardiac Biomarkers01:20

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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

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

Miriam J Rodriguez1, Batul Yawer2, Patricia Garcia3

  • 1Indiana University School of Public Health, Bloomington, IN, USA.

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

Alzheimer's disease (AD) blood biomarkers show associations with cognitive function in Hispanic and White-non-Hispanic older adults. Specific biomarkers like ptau217 and NFL were linked to cognitive and functional changes, particularly in Hispanic individuals.

Palabras clave:
BiomarcadoresAlzheimersangrecogniciónHispanicWhite-non-Hispanic

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Área de la Ciencia:

  • Neurociencia; Investigación de biomarcadores; Medicina Geriátrica

Sus antecedentes:

  • Se examinaron biomarcadores sanguíneos de la enfermedad de Alzheimer (EA) en relación con el estado cognitivo y funcional. Se compararon las asociaciones en adultos mayores hispanos (n=214) y blancos no hispanos (WNH) (n=169) poco estudiados.

Objetivo del estudio:

  • Comparar las asociaciones de los biomarcadores sanguíneos de AD con el rendimiento cognitivo y funcional entre grupos étnicos. Investigar el valor predictivo de los biomarcadores para el deterioro cognitivo y las limitaciones funcionales.

Principales métodos:

  • Se incluyeron sujetos con cognición normal, MCI preclínico, MCI y demencia (n=383 en total). Se evaluó la función cognitiva y las limitaciones funcionales (mCDR). Se analizaron biomarcadores sanguíneos (ptau217, abeta40, abeta42, GFAP, NFL) utilizando modelos de regresión, controlando las covariables.

Principales resultados:

  • En hispanos, ptau217 se relacionó con menor memoria y fluidez verbal; NFL se relacionó con menor fluidez verbal y mayores limitaciones funcionales. En WNH, Abeta40 y GFAP se relacionaron con menor fluidez de letras; ptau217 y abeta42 se relacionaron con mayor fluidez de letras. Las asociaciones de biomarcadores mostraron tamaños de efecto pequeños a moderados.

Conclusiones:

  • Los biomarcadores sanguíneos están asociados con la función cognitiva tanto en adultos mayores hispanos como en WNH. Se observaron asociaciones con limitaciones funcionales principalmente en el grupo hispano. Los biomarcadores pueden ayudar a predecir el estado cognitivo y el deterioro funcional en poblaciones hispanas con ADRD, reduciendo potencialmente las disparidades de salud.