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The shift in the "paradigm" of the pharmacology of hypertension
Christodoulos S Flordellis1, Dimitrios Goumenos, George Kourounis
1Department of Pharmacology, School of Medicine, University of Patras, Rio Patras, Greece. flordell@med.upatras.gr
Insights
Hypertension treatment is evolving beyond hemodynamic control to address endothelial dysfunction and local tissue pathways. New drugs and genetic insights offer personalized strategies for managing high blood pressure.
Area of Science:
- Cardiovascular Medicine
- Pharmacology
- Genetics
Background:
- Elevated blood pressure was historically viewed as a purely hemodynamic issue, managed by inhibiting vasoconstrictor pathways like the renin-angiotensin system.
- Recent research highlights the dissociation of endothelial dysfunction and vascular pathology from blood pressure itself.
- Endothelial dysfunction is now recognized for its role in atherosclerosis and thrombosis, not just vascular reactivity.
Purpose of the Study:
- To explore the evolving pharmacological approaches to hypertension management.
- To investigate the role of endothelial function, local tissue renin-angiotensin system, and natriuretic peptides in hypertension.
- To examine the impact of genetic polymorphisms on hypertension pathophysiology and treatment response.
Main Methods:
- Review of recent advancements in understanding hypertension.
- Analysis of new drug targets focusing on endothelial function, vasodilatory, and anti-proliferative pathways.
- Exploration of genetic polymorphisms in key hypertension effectors.
Main Results:
- New pharmacological strategies consider endothelial function and local tissue systems.
- Drugs like Nebivolol, Carvedilol, and Omapatrilat represent a shift in therapeutic targets.
- Identification of genetic polymorphisms (e.g., p22phox, alpha-adducin, adrenergic receptors) offers potential for personalized hypertension treatment.
Conclusions:
- Hypertension management is shifting towards a more comprehensive approach.
- Targeting endothelial function and utilizing novel drug classes are key advancements.
- Genetic insights pave the way for individualized hypertension treatment strategies.
Abstract:
Until recently elevated blood pressure was considered as a hemodynamic entity representing an increase in workload for the heart and the arterial tree. Control of hypertension meant hemodynamic unloading, through inhibition of vasoconstrictor pathways, principally renin-angiotensin system and sympathetic system. In recent years however a new pharmacological approach has evolved as a result of (i) the dissociation of endothelial dysfunction and vascular pathology from increased blood pressure; (ii) the recognition that endothelial dysfunction regards not only the vascular reactivity, but also promotes atherosclerosis and thrombosis; and (iii) an improved understanding of the complexity of local-tissue renin angiotensin system and of the vasodilatory and cytoprotective role of natriuretic peptides. This has led to a reconsideration of existing medicines in terms of specification on endothelial function, more rationalized application of drugs and search for new compounds targeting both vasodilatory and anti-proliferative pathways. Examples include beta1-adrenergic antagonists, such as Nebivolol and Carvedilol, and vasopeptidase inhibitors, such as Omapatrilat, that inhibit simultaneously the angiotensin converting enzyme and neutral endopeptidase. Furthermore the identification of genetic polymorphisms in the effectors involved in the pathophysiology of hypertension or in the response to anti-hypertensive drugs, such as the p22phox subunit of NADPH oxidase, alpha-adducin or adrenergic receptors, has promoted the prospective of both better understanding of hypertension and individualized strategies for its treatment.
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