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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...
749
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...
516

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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.

Xin Ma1, Weiping Zhang2, Chun Tang3

  • 1Peking University Institute of Mental Health (Sixth Hospital), Beijing, Beijing, China.

Alzheimer'S & Dementia : the Journal of the Alzheimer'S Association
|December 26, 2025
PubMed
Summary
This summary is machine-generated.

This study identified six serum microRNAs (miRNAs) common to Dementia with Lewy Bodies (DLB) and Alzheimer's Disease (AD), revealing shared pathological mechanisms. These findings offer insights into the overlapping features of these neurodegenerative conditions.

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Area of Science:

  • Neuroscience
  • Genetics
  • Biochemistry

Background:

  • Dementia with Lewy Bodies (DLB) and Alzheimer's Disease (AD) share overlapping clinical and pathological characteristics.
  • Understanding the shared molecular mechanisms is crucial for differentiating and treating these neurodegenerative disorders.

Purpose of the Study:

  • To investigate shared pathological mechanisms in DLB and AD by analyzing serum microRNA (miRNA) expression profiles.
  • Identify common differentially expressed miRNAs and their target genes in DLB and AD patients compared to normal controls.

Main Methods:

  • Utilized the GSE120584 dataset for differential expression analysis of serum miRNAs in DLB, AD, and normal controls (NC).
  • Employed R's limma package for miRNA analysis, multimiR for target gene prediction, and Cytoscape for identifying key hub genes.
  • Conducted Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway analyses on target genes.

Main Results:

  • Identified six differentially expressed miRNAs (5 downregulated, 1 upregulated) common to both DLB and AD.
  • MYC, BRCA1, CDKN2A, and CDK4 were identified as critical common target genes.
  • Pathway analysis indicated involvement in cellular senescence, p53, FoxO, and HIF-1 signaling pathways.

Conclusions:

  • Six differential serum miRNAs were identified in patients with both DLB and AD.
  • These miRNAs may target downstream genes and regulate signaling pathways, contributing to the overlapping pathology of DLB and AD.
  • The findings provide potential biomarkers and therapeutic targets for understanding shared mechanisms in neurodegenerative diseases.