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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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Related Experiment Video

Updated: Jan 7, 2026

Dried Blood Spot Collection of Health Biomarkers to Maximize Participation in Population Studies
07:20

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

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Biomarkers.

Carolina Aparecida de Faria Almeida1, Larissa Estessi de Souza1, Chiara Maria Righini1

  • 1University of São Paulo Medical School, São Paulo, São Paulo, Brazil.

Alzheimer'S & Dementia : the Journal of the Alzheimer'S Association
|December 24, 2025
PubMed
Summary
This summary is machine-generated.

Chronic lithium treatment may delay Alzheimer's Disease development in Down syndrome (DS) models. Positron emission tomography (PET) revealed lithium's anti-neuroinflammatory effects in trisomic mice, suggesting therapeutic potential.

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Area of Science:

  • Neuroscience
  • Genetics
  • Pharmacology

Background:

  • Alzheimer's Disease (AD) is common in Down syndrome (DS) due to trisomy 21.
  • Increased life expectancy in DS necessitates AD intervention strategies.
  • Lithium carbonate (Li) shows neuroprotective effects in pre-clinical models.

Purpose of the Study:

  • To evaluate chronic Li treatment effects in a DS mouse model.
  • To assess Li's impact on neuroinflammation and brain metabolism using PET.

Main Methods:

  • Ts65Dn mice (trisomic, Ts) and euploid controls (Eup) received Li or no treatment (Ct).
  • Positron Emission Tomography (PET) with [11C]PK11195 and [18F]FDG was used.
  • Measurements were taken at 2, 5, and 14 months of age.

Main Results:

  • Trisomic mice showed increased neuroinflammation ([11C]PK11195 uptake) and altered brain metabolism ([18F]FDG uptake) at 14 months.
  • Chronic Li treatment prevented these increases in trisomic mice.
  • Li treatment also reduced [18F]FDG uptake in trisomic mice from 5 to 14 months.

Conclusions:

  • Trisomic animals exhibit neuroinflammation at 14 months.
  • Chronic lithium treatment demonstrates anti-neuroinflammatory effects in this DS model.
  • Further research is needed to fully understand lithium's therapeutic mechanisms.