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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.
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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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Updated: Jan 7, 2026

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

Jacob Apibilla Ayembilla1, Yannick Joel Wadop Ngouongo2, Biniyam A Ayele3,4,5

  • 1Accra Technical University, Accra, Greater Accra Region, Ghana.

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

Changes in fatty acids in cerebrospinal fluid (CSF) can help diagnose mild cognitive impairment (MCI) in older adults, potentially before amyloid and tau abnormalities appear. These findings may lead to new strategies for preventing cognitive decline.

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Area of Science:

  • Neuroscience
  • Biochemistry
  • Biomarker Discovery

Background:

  • Fatty acids are crucial for neuronal membrane structure, but their role in cognition and metabolism is not fully understood.
  • Mild cognitive impairment (MCI) affects cognition and is a risk factor for dementia.
  • Cerebrospinal fluid (CSF) analysis offers insights into brain health and disease processes.

Purpose of the Study:

  • To assess the diagnostic performance of fatty acids in CSF for differentiating MCI from cognitively unimpaired (CU) individuals.
  • To compare the diagnostic utility of CSF fatty acids with established biomarkers like Aβ42 and tau.
  • To investigate the combined diagnostic power of CSF fatty acids and traditional biomarkers.

Main Methods:

  • Analysis of saturated fatty acids (SAFA), monounsaturated fatty acids (MUFA), and polyunsaturated fatty acids (PUFA) in three CSF fractions (unesterified, supernatant, nanoparticles).
  • Utilized data from 68 CU and 38 MCI participants in the HMRI Aging Study.
  • Employed multivariable binary logistic regression and ROC curve analysis, adjusting for covariates like age, sex, and medical history.

Main Results:

  • Specific fatty acid ratios and levels (e.g., palmitoleic acid/palmitic acid) showed significant diagnostic performance (AUC 0.66-0.71) for MCI detection.
  • CSF fatty acids outperformed Aβ42, tau, and their ratio (AUC 0.53-0.55) in differentiating MCI from CU.
  • Integrating CSF fatty acids with the Aβ42/tau ratio enhanced diagnostic accuracy.

Conclusions:

  • Alterations in fatty acid metabolism may be an early indicator of MCI, preceding amyloid and tau pathology.
  • CSF fatty acid profiling holds promise as a novel diagnostic tool for early cognitive decline.
  • Targeting fatty acid metabolism could offer a therapeutic strategy to mitigate cognitive decline in aging populations.