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Investigating Aortic Valve Calcification via Isolation and Culture of T Lymphocytes using Feeder Cells from Irradiated Buffy Coat
Published on: February 4, 2021
Lipid lowering and aortic valve disease
1Faculty of Health Sciences, Linköping University, Bromma, Sweden. andol@imv.liu.se
Insights
Lowering low-density lipoprotein cholesterol (LDL-C) may not significantly slow aortic stenosis (AS) progression, as indicated by recent trials. Further research is needed to determine the role of lipid-lowering therapies in managing AS.
Area of Science:
- Cardiovascular Medicine
- Clinical Trials
- Lipid Metabolism
Background:
- Aortic stenosis (AS) shares early pathogenic similarities with atherosclerosis.
- Previous studies suggested lipid lowering might slow AS progression.
- Recent randomized trials have investigated this hypothesis.
Purpose of the Study:
- To evaluate the effect of low-density lipoprotein cholesterol (LDL-C) lowering on the progression of aortic stenosis (AS).
- To assess the clinical consequences of lipid-lowering interventions in patients with AS.
Main Methods:
- Two randomized placebo-controlled trials (SALTIRE and SEAS) were conducted.
- These studies investigated the impact of LDL-C reduction on AS progression.
- The ASTRONOMER study is an ongoing trial examining rosuvastatin's effect on AS.
Main Results:
- Both the SALTIRE and SEAS studies yielded neutral outcomes.
- These results suggest that LDL-C lowering may not significantly impact AS progression.
- The precise reasons for the neutral outcomes are under investigation.
Conclusions:
- Current evidence does not support routine lipid-lowering therapy for slowing AS progression.
- Potential factors influencing trial outcomes include study design and treatment specifics.
- Further investigation, such as the ASTRONOMER study, is anticipated to clarify the role of statins in AS management.
Abstract:
Several retrospective and nonrandomized studies have indicated that lowering atherogenic lipoprotein, in particular low-density lipoprotein cholesterol, may retard the hemodynamic progression of aortic stenosis (AS). This valvular disease shares pathogenic and pathoanatomic similarities with atherosclerosis, at least in their early developments. Two randomized placebo-controlled studies researching the effect of lowering low-density lipoprotein on AS progression and its clinical consequences have been published recently-the Scottish Aortic Stenosis and Lipid Lowering Trial, Impact on Regression (SALTIRE) study and the Simvastatin and Ezetimibe in Aortic Stenosis (SEAS) study. Both of these studies had neutral outcomes. The causes for the negative outcome may be that cholesterol lowering does not influence AS development in a clinically significant way or it may be due to traits in the design of the studies or treatments. Therefore, statin treatment for prevention of AS progression cannot be ruled out as a future therapeutic option in AS. The outcome of the ongoing Aortic Stenosis Progression Observation: Measuring Effects of Rosuvastatin (ASTRONOMER) study, which is examining lipid lowering as a treatment for AS, is greatly anticipated.
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