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Interrelationship of hypertension, plasma lipids and atherosclerosis
J M Krzesinski1, P G Carlier, G L Rorive
1Department of Medicine, University of Liège, Belgium.
Insights
Hypertension worsens atherosclerosis by altering vascular structure. However, lowering blood pressure doesn't reduce coronary heart disease incidence, suggesting incomplete reversibility of vascular changes or drug side effects.
Area of Science:
- Cardiovascular Science
- Vascular Biology
- Epidemiology
Background:
- Hypertension and hypercholesterolemia are key factors in atherosclerosis development and progression.
- Epidemiological and clinical data link hypertension to aggravated atherosclerotic lesions.
- Vascular structural changes are induced by hypertension, impacting arterial walls.
Purpose of the Study:
- To explore the complex relationship between hypertension, atherosclerosis, and coronary heart disease (CHD) incidence.
- To investigate why correcting high blood pressure does not consistently decrease CHD incidence in clinical settings.
- To examine potential explanations for the observed disconnect between blood pressure control and CHD outcomes.
Main Methods:
- Review of epidemiological, clinical, and experimental observations on hypertension and atherosclerosis.
- Analysis of data concerning the development and progression of atherosclerotic lesions.
- Formulation and evaluation of hypotheses explaining clinical findings.
Main Results:
- Hypertension exacerbates atherosclerotic lesions through vascular structural modifications.
- Clinical studies show that blood pressure reduction does not decrease coronary heart disease incidence.
- Two primary hypotheses proposed: incomplete reversibility of hypertension-induced vascular changes and potential deleterious effects of antihypertensive drugs.
Conclusions:
- The link between hypertension and atherosclerosis is well-established, with hypertension worsening lesions.
- The lack of CHD incidence reduction upon blood pressure correction suggests underlying complexities.
- Further research is needed to understand the incomplete reversibility of vascular changes and potential drug-induced effects.
Abstract:
The relationship between hypertension and atherosclerosis has been illustrated by epidemiological, clinical and experimental observations. Typical atherosclerotic lesions develop in arterial wall when hypercholesterolaemia is present. Hypertension aggravates these lesions by causing vascular structural changes. In clinical studies, however, the correction of high blood pressure does not decrease the incidence of coronary heart disease. Several hypotheses have been formulated to account for this observation: one is that reversibility of the structural vascular changes induced by hypertension is not complete when the blood pressure is lowered; another is that antihypertensive drugs have a deleterious effect on the vascular wall.