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Updated: Aug 9, 2026
05:17
A Reproducible Computerized Method for Quantitation of Capillary Density using Nailfold Capillaroscopy
Published on: October 27, 2015
Increased skin capillary density in treated essential hypertensive patients
Haythem Debbabi1, Laurent Uzan, Jean Jacques Mourad
1Department of Physiology and non-invasive investigations, Inserm U689, Hopital Lariboisière, Paris, France.
American Journal of Hypertension
|May 2, 2006
Summary
Essential hypertension is linked to lower skin capillary density. Effective blood pressure treatment and weight management may improve capillary density in hypertensive patients.
Area of Science:
- Cardiovascular Research
- Hypertension Studies
- Microcirculation
Background:
- Microvascular rarefaction is a key characteristic of essential hypertension.
- Skin capillary density is a potential indicator of hypertension-related vascular changes.
Purpose of the Study:
- To measure skin capillary density in hypertensive patients undergoing treatment.
- To explore correlations between blood pressure and capillary density.
- To identify factors influencing capillary density in hypertension.
Main Methods:
- Cross-sectional observational study of 76 treated hypertensives, 24 untreated hypertensives, and 70 normotensive controls.
- Intravital video-microscopy used to assess basal and maximal skin capillary densities.
- Aortic stiffness evaluated via pulse wave velocity and central aortic pressure measurements.
Main Results:
- Untreated hypertensive patients exhibited significantly lower basal and maximal capillary densities compared to treated hypertensives and normotensives.
- In normotensive subjects, aortic systolic blood pressure inversely correlated with capillary density.
- In hypertensive patients, capillary density was influenced by antihypertensive treatment and overweight, not blood pressure alone.
Conclusions:
- Reduced capillary density in hypertensive patients is associated with cardiovascular risk factors like smoking and obesity.
- Effective antihypertensive treatment appears to increase capillary density.
- Further prospective studies are warranted to establish a causal link between blood pressure and capillary density.
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