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Updated: Jun 14, 2025

Isolation and Characterization of Adult Cardiac Fibroblasts and Myofibroblasts
Published on: March 12, 2020
Circulating fibrocyte levels correlate with left ventricular mass in middle-aged healthy adults without hypertension
Daniel S Feuer1, Borna Mehrad1,2, Ellen C Keeley1,3
1Department of Medicine, University of Florida, Gainesville, FL, United States of America.
Insights
Circulating fibrocytes correlate with left ventricular mass in healthy adults. These cells may predict future hypertension development.
Area of Science:
- Cardiovascular Research
- Immunology
- Cell Biology
Background:
- Fibrocytes, bone marrow-derived cells, contribute to arterial fibrosis in hypertension.
- Elevated left ventricular (LV) mass is a hallmark of hypertensive cardiovascular damage.
Purpose of the Study:
- To investigate the association between circulating fibrocytes and LV mass in non-hypertensive adults.
- To explore fibrocytes as potential early biomarkers for cardiovascular changes.
Main Methods:
- Peripheral blood samples were collected from 13 middle-aged, non-hypertensive adults.
- Fibrocyte levels and their activated phenotypes were quantified.
- Cardiac magnetic resonance imaging (MRI) was used to assess LV mass.
Main Results:
- A significant correlation was found between total fibrocytes (CD45+Col1+) and LV mass index (r=0.71, p=0.006).
- Specific fibrocyte subsets expressing CCR2, CCR5, CCR7, CXCR4, α-SMA, CD133, and pSTAT6 also correlated with LV mass index.
- These findings suggest fibrocytes are linked to cardiac remodeling even in the absence of hypertension.
Conclusions:
- Circulating fibrocytes are associated with LV mass index in middle-aged adults without hypertension.
- Fibrocytes may serve as an early indicator or harbinger for the future development of hypertension and associated cardiac changes.
Background:
Fibrocytes, circulating bone-marrow derived cells that differentiate into fibroblasts and myofibroblasts, are a major source of hypertensive arterial fibrosis and correlate with left ventricular (LV) mass in subjects with hypertension. We tested whether circulating fibrocytes levels correlate with LV mass in middle-aged adults without hypertension.
Methods:
We measured peripheral blood fibrocyte levels and their activated phenotypes in 13 middle-aged, non-hypertensive adults and performed cardiac magnetic resonance imaging to assess LV mass.
Results:
There was a strong correlation between total fibrocyte levels (CD45 + Col1+) and LV mass index (r = 0.71, p = 0.006), as well as fibrocyte subsets expressing the chemokine markers CCR2 (r = 0.60, p = 0.032), CCR5 (r = 0.62, p = 0.029), CCR7 (r = 0.60, p = 0.034), co-expression of CXCR4 and CCR2 (r = 0.62, p = 0.029), α-SMA+ (r = 0.57, p = 0.044), CD133 (r = 0.59, p = 0.036), and pSTAT6 (r = 0.64, p = 0.032).
Conclusions:
Circulating fibrocytes are associated with LV mass index in middle-aged, non-hypertensive adults and may be a harbinger for the development of hypertension.
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