Vascular Remodeling Mechanisms in Hypertension
Summary
Vascular remodeling in hypertension encompasses structural and functional alterations of blood vessels that contribute to elevated peripheral resistance and end-organ damage. Key processes include inward eutrophic and hypertrophic changes in small arteries, characterised by reduced lumen diameter and increased wall thickness. At the cellular level, endothelial dysfunction initiates maladaptive signalling through reduced nitric oxide bioavailability and heightened oxidative stress, fostering inflammation and leucocyte adhesion. Vascular smooth muscle cells (VSMCs) exhibit phenotypic switching from a contractile to a synthetic state, with enhanced proliferation, migration and extracellular matrix (ECM) deposition. Adventitial fibroblasts also migrate and secrete matrix components, reinforcing vessel stiffening. Molecular drivers involve activation of the renin–angiotensin–aldosterone system, sympathetic overactivity, cytokine release and growth factor signalling. Matrix metalloproteinases remodel the ECM, while imbalanced nitric oxide and reactive oxygen species modulate both VSMC behaviour and vessel compliance. Integrative mechano-biological feedback further amplifies these changes, perpetuating hypertension and increasing cardiovascular risk.
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Vascular Remodeling Mechanisms in Hypertension publication trend
The graph below shows the total number of articles in vascular remodeling mechanisms in hypertension across all publications each year (not limited to Nature Index journals).
Technical terms
Vascular remodeling: Structural adjustment of blood vessel walls, including changes in wall thickness, lumen diameter and extracellular matrix composition, in response to chronic haemodynamic stress.
Vascular smooth muscle cell (VSMC): Contractile cells in the medial layer of vessels that can switch to a synthetic phenotype, characterised by proliferation, migration and extracellular matrix synthesis.
Extracellular matrix (ECM): Network of proteins and polysaccharides surrounding cells, providing structural support and regulating cell behaviour through biochemical signalling.
Phenotypic switching: Transition of VSMCs from a differentiated, contractile state to a synthetic state with increased proliferation and matrix production.
Matrix metalloproteinases (MMPs): Family of zinc-dependent enzymes that degrade ECM components, influencing vessel structure and cell migration.
Nitric oxide (NO): A gaseous signalling molecule produced by endothelial cells that induces vasodilation and inhibits VSMC proliferation; its deficiency contributes to hypertension.
References
- Norepinephrine promotes oxidative stress in vascular adventitial fibroblasts via PKC/NFκB-mediated NOX2 upregulation. Redox Report (2025).
- Gstp1 negatively regulates blood pressure in hypertensive rat via promoting APLNR ubiquitination degradation mediated by Nedd4. Clinical Science (2024).
- Matrix Metalloproteinases and Arterial Hypertension: Role of Oxidative Stress and Nitric Oxide in Vascular Functional and Structural Alterations. Biomolecules (2021).
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