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[Hypertension: microvascular complications].

J S Silvestre¹, B I Lévy

¹INSERM U541, biologie et physiologie moléculaire du vaisseau, service de physiologie, explorations fonctionnelles, hôpital Lariboisière, 41, bd de la Chapelle, 75475 Paris.

Archives Des Maladies Du Coeur Et Des Vaisseaux

|February 24, 2001

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Hypertension involves three main arteriolar abnormalities: increased vasoconstrictor tone, hypertrophic remodeling, and rarefaction. Recent therapeutic strategies now target these structural changes to manage high blood pressure.

Area of Science:

Cardiovascular Physiology
Vascular Biology
Hypertension Research

Context:

Arteriolar abnormalities are key contributors to increased systemic resistance in hypertension.
These include elevated vasoconstrictor tone, hypertrophic remodeling, and microvascular rarefaction.
The interplay and significance of these factors vary by organ and disease stage.

Purpose:

To review the three primary arteriolar abnormalities in hypertension: increased vasoconstrictor tone, hypertrophic remodeling, and rarefaction.
To examine the evolution of antihypertensive therapeutic strategies over the past decades.
To highlight the shift towards targeting structural vascular changes.

Summary:

Hypertension is characterized by arteriolar issues: sympathetic hyperactivity causing high vasoconstrictor tone, increased arteriole wall thickness (hypertrophic remodeling) narrowing lumens, and reduced microvascular density (rarefaction).

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Therapeutic approaches have evolved from solely vasomotor targets (vasodilators) to addressing hypertrophic remodeling since the mid-1980s.

Current research increasingly focuses on vascular rarefaction as a significant factor, opening new avenues for correcting structural abnormalities.

Impact:

Understanding these arteriolar changes is crucial for developing effective hypertension management.
The evolution of treatment reflects a growing appreciation for structural vascular pathology in hypertension.
Targeting arteriolar remodeling and rarefaction represents a promising frontier in antihypertensive therapy.