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

Jonathan M Schott1,

  • 1Dementia Research Centre, UCL Queen Square Institute of Neurology, University College London, London, United Kingdom.

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

Life course factors significantly impact dementia risk, with modifiable exposures playing a key role alongside genetics. The Insight 46 study explores these influences on brain health over time.

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Area of Science:

  • Neuroscience
  • Epidemiology
  • Genetics

Background:

  • Dementia risk is influenced by genetics and life-course exposures.
  • Approximately 40% of dementia cases worldwide may be preventable through modifiable risk factors.
  • Genetic factors account for over 70% of Alzheimer's disease risk.

Purpose of the Study:

  • To investigate the interplay between life-course exposures, genetics, and cognitive decline.
  • To explore factors that predispose to or protect against brain pathologies and cognitive decline.
  • To leverage birth cohort data combined with detailed neuroimaging and biomarker analysis.

Main Methods:

  • Utilizing the National Survey of Health and Development (NSHD), a long-term British birth cohort study.
  • Conducting the Insight 46 neuroscience study with multi-modal MR imaging, PET scans (amyloid and tau), and fluid biomarker collection.
  • Integrating cognitive assessments, genetics, epigenetics, and cardiovascular data across multiple study waves.

Main Results:

  • Analysis of life-course factors including education, social circumstances, obesity, exercise, head injury, diabetes, and vascular risk.
  • Exploration of the impact of sensory function (hearing, olfaction), menopause, physical capability, and adversity on brain health.
  • Findings highlight the influence of mental health, sleep, and occupational factors on later-life brain outcomes.

Conclusions:

  • Life-course exposures significantly influence later-life brain health and dementia risk.
  • A comprehensive understanding requires integrating genetic, environmental, and lifestyle data.
  • Opportunities for data access and collaboration are available for further research.