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Assessment of Vascular Function in Patients With Chronic Kidney Disease
Published on: June 16, 2014
Heart, aging, and hypertension
J Varagic1, D Susic, E Frohlich
1Hypertension Research Laboratory, Alton Ochsner Medical Foundation, New Orleans, Louisiana 70121, USA.
Insights
Hypertension and aging cause similar heart problems like hypertrophy and fibrosis. However, distinct mechanisms, particularly collagen deposition in the heart, drive these conditions, suggesting new therapeutic targets.
Area of Science:
- Cardiology
- Pathophysiology
- Gerontology
Background:
- Hypertension and aging negatively impact the cardiovascular system, notably the heart.
- Both conditions manifest similarly, including ventricular hypertrophy, fibrosis, and impaired function.
Purpose of the Study:
- To explore recent clinical and experimental findings on hypertensive and aging heart disease.
- To focus on alterations in nonmyocytic elements and collagen deposition in the heart.
- To discuss novel therapeutic strategies.
Main Methods:
- Review of recent clinical and experimental findings.
- Focus on nonmyocytic cellular changes and myocardial collagen deposition.
- Analysis of pathophysiological mechanisms underlying heart dysfunction.
Main Results:
- Hypertensive and aging hearts show similar structural and functional changes.
- Different underlying pathophysiological mechanisms are suggested.
- Exaggerated myocardial collagen deposition is a key factor in ventricular dysfunction.
Conclusions:
- While outwardly similar, hypertensive and aging hearts have distinct underlying causes.
- Alterations in nonmyocytic elements, especially collagen, are crucial.
- New therapeutic approaches targeting these mechanisms are emerging.
Abstract:
Hypertension and aging adversely affect cardiovascular system and the heart is invariably involved. Manifestations of hypertensive heart disease and of the aging heart appear similar; ventricular hypertrophy, myocardial fibrosis, and impairments in ventricular function and coronary hemodynamics characterize both conditions. However, a great deal of evidence suggests that different underlying pathophysiological mechanisms may be involved. This report discusses most recent clinical and experimental findings and focuses on the alterations in nonmyocytic elements that are a part of heart involvement. Particular attention was given to factors that are responsible for exaggerated myocardial deposition of collagen that, by itself, may be responsible for ventricular dysfunction and impaired coronary hemodynamics in hypertensive and aging hearts. Newly developed therapeutical strategies, based on the most recent experimental and clinical studies, are also discussed.
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