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Related Concept Videos

Blood Studies for Cardiovascular System I: Cardiac Biomarkers01:20

Blood Studies for Cardiovascular System I: Cardiac Biomarkers

746
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...
511

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Updated: Jan 7, 2026

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

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Biomarkers.

Lucy Wambui Kamau1, Chinedu T Udeh-Momoh1,2, Karen Blackmon1,3

  • 1Brain and Mind Institute, Aga Khan University, Nairobi, Kenya.

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

Public perception of biospecimen sample collection for dementia research in Kenya is mixed. While blood and urine are acceptable, socio-cultural concerns impact acceptance of other samples like CSF and brain tissue.

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Area of Science:

  • Neuroscience
  • Public Health
  • Medical Anthropology

Background:

  • Biospecimen sample collection is vital for dementia diagnosis and evaluation.
  • Limited research exists on public perceptions of biospecimen collection for dementia in African countries, specifically Kenya.
  • Dementia remains a largely under-recognized disease in Kenya.

Purpose of the Study:

  • To investigate public perceptions regarding biospecimen sample collection for dementia research in Kenya.
  • To understand community attitudes towards various biospecimens, including urine, saliva, blood, tears, hair, cerebrospinal fluid (CSF), and brain samples.

Main Methods:

  • Eight focused group discussions (FGDs) were conducted in Nairobi, stratified by age and gender.
  • An open-ended FGD guide was utilized to facilitate discussions lasting approximately 90 minutes each.
  • Participants shared perceptions on the acceptability and concerns related to donating different types of biospecimens for research.

Main Results:

  • High willingness to provide blood and urine samples for research.
  • Mixed acceptance of saliva samples, with many eventually agreeing to provide them.
  • Significant socio-cultural concerns, including witchcraft beliefs, affected willingness to donate tears, hair, and brain samples.
  • Hesitancy towards CSF sample donation due to safety, pain, personnel qualifications, and result-sharing concerns.
  • Religious and cultural factors influenced reluctance towards brain donation.

Conclusions:

  • Biospecimen collection is crucial for accurate dementia diagnosis and research advancement.
  • Increased education and advocacy are necessary to highlight the importance of sample collection in dementia research.
  • Community engagement is essential to ensure culturally appropriate and acceptable biospecimen collection and clinical research practices in Kenya.