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Published on: July 3, 2013
Aldosterone and end-organ damage.
Annis M Marney1, Nancy J Brown
1Division of Clinical Pharmacology, Departments of Medicine and Pharmacology, Vanderbilt University Medical Center, Nashville, TN 37232-6602, USA.
Clinical Science (London, England : 1979)
|August 9, 2007
Summary
High aldosterone levels, linked to mineralocorticoid receptor (MR) activation, contribute to cardiovascular and kidney damage. MR antagonists show benefits in heart failure and hypertension but may negatively impact glucose metabolism in diabetes.
Area of Science:
- Cardiovascular Medicine
- Endocrinology
- Nephrology
Background:
- Elevated aldosterone is common in hypertension, metabolic syndrome, and sleep apnea.
- Mineralocorticoid receptor (MR) activation contributes to cardiovascular remodeling and renal injury.
- MR activation promotes oxidative stress, inflammation, endothelial dysfunction, and fibrosis.
Purpose of the Study:
- To review the role of aldosterone and MR activation in cardiovascular and renal diseases.
- To discuss the mechanisms of MR activation, including genomic and non-genomic pathways.
- To evaluate the clinical effects of MR antagonism in various conditions.
Main Methods:
- Literature review of studies on aldosterone, MR activation, and MR antagonism.
- Analysis of evidence linking MR activation to cardiovascular and renal pathology.
- Examination of clinical trial data on MR antagonist efficacy and safety.
Main Results:
- MR activation contributes to hypertension, cardiovascular remodeling, and renal damage.
- MR antagonism reduces mortality in heart failure and post-myocardial infarction.
- MR antagonism improves endothelial function, reduces fibrosis markers, lowers blood pressure, and decreases albuminuria.
- Aldosterone's non-genomic effects may negatively impact glucose homeostasis and endothelial function in diabetes.
Conclusions:
- Aldosterone and MR activation play significant roles in cardiovascular and renal diseases.
- MR antagonism is a promising therapeutic strategy for heart failure, hypertension, and diabetic kidney disease.
- Further research is needed to understand aldosterone's non-genomic effects, particularly in diabetes.
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