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Related Concept Videos

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

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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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Related Experiment Video

Updated: Jan 7, 2026

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

Lisa Quenon1,2, Lara Huyghe2, Jean-Louis Bayart3,4

  • 1Saint-Luc University Hospital, Brussels, Brussels, Belgium.

Alzheimer'S & Dementia : the Journal of the Alzheimer'S Association
|December 25, 2025
PubMed
Summary
This summary is machine-generated.

Plasma p-tau217 and specific cognitive tests can predict early tau aggregation in the brain. This finding aids in identifying individuals at risk for cognitive decline, offering a more accessible approach than traditional biomarkers.

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Area of Science:

  • Neuroscience
  • Biomarker Discovery
  • Alzheimer's Disease Research

Background:

  • Cognitively unimpaired individuals with high amyloid and tau burden risk short-term cognitive decline.
  • Identifying these individuals is challenging due to low prevalence and costly biomarkers.
  • Existing blood biomarkers often link to amyloid, not tau, necessitating better tau-specific measures.

Purpose of the Study:

  • To assess if specific cognitive tasks and blood-based biomarkers can predict early tau aggregation.
  • To identify individuals at high risk of cognitive decline using scalable alternatives.

Main Methods:

  • 77 cognitively unimpaired participants underwent tau-PET, MRI, amyloid status determination, cognitive tests (VSTMBT, CMT, PACC5), and blood tests for plasma p-tau217 and p-tau181.
  • Regression models predicted medial temporal (MTL) and temporal neocortex (NEO) tau burden using demographics, cognitive performance, and plasma p-tau levels.

Main Results:

  • Plasma p-tau217 and the Visual Short-Term Binding Test (VSTMBT) predicted MTL tau burden.
  • Plasma p-tau217, p-tau181, and the Preclinical Alzheimer's Cognitive Composite (PACC5) predicted temporal NEO tau burden.

Conclusions:

  • Plasma p-tau217 is a significant predictor of tau burden in both MTL and NEO regions.
  • Cognitive tasks, specific to the affected brain region's function, complement plasma biomarkers in predicting tauopathy progression.