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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:
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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.
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Related Experiment Video

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

Na Tian1, Lin Song2, Yun Liu3

  • 1Key Laboratory of Endocrine Glucose & Lipids Metabolism and Brain Aging, Ministry of Education; Department of Neurology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, China.

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

High triglyceride glucose-body mass index (TyG-BMI), a marker for insulin resistance, is linked to white matter hyperintensities (WMH) in older adults. Hypertension significantly mediates this association, even in non-diabetic individuals.

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Area of Science:

  • Neurology
  • Endocrinology
  • Cardiology

Background:

  • Insulin resistance (IR) and hypertension are established vascular risk factors linked to vascular brain injury.
  • Evidence suggests a causal link between IR and hypertension.
  • Population studies on the association between the triglyceride glucose-body mass index (TyG-BMI), a surrogate marker for IR, and MRI markers of vascular brain injury are limited.

Purpose of the Study:

  • To investigate the association between TyG-BMI and MRI-defined vascular brain injury in older adults.
  • To explore the mediating role of hypertension in the relationship between TyG-BMI and vascular brain injury.

Main Methods:

  • A population-based study of 1268 participants (age ≥60 years) from the MIND-China MRI sub-study.
  • Assessment of white matter hyperintensities (WMH), enlarged perivascular spaces (EPVS), cerebral microbleeds (CMBs), and lacunes using STRIVE-1 criteria.
  • Calculation of TyG-BMI index and analysis using general linear, logistic, and mediation models.

Main Results:

  • Higher TyG-BMI was significantly associated with increased total, periventricular, and deep WMH volumes and WMH burden.
  • No significant associations were found between TyG-BMI and EPVS, CMBs, or lacunes.
  • Hypertension mediated approximately 42.86% of the association between TyG-BMI and WMH volume, persisting in non-diabetic individuals.

Conclusions:

  • Elevated TyG-BMI, indicative of insulin resistance, is associated with vascular brain injury, specifically WMH, in older adults.
  • Hypertension plays a significant mediating role in the link between IR and WMH.
  • These associations are evident even in individuals without diabetes, highlighting the importance of managing IR and hypertension for brain health.