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Statin treatment for cerebral small vessel disease: A systematic review and meta-analysis of randomized controlled
David Fresnais1,2, Brynjar Fure1,2
1School of Medical Sciences, Faculty of Medicine and Health, Örebro University, Örebro, Sweden.
Insights
Statins show a non-significant trend in reducing white matter hyperintensities (WMH) in cerebral small vessel disease (CSVD). Further research is needed to confirm statin benefits for CSVD patients.
Area of Science:
- Neurology
- Cardiovascular Medicine
- Pharmacology
Background:
- Cerebral small vessel disease (CSVD) is a progressive brain disorder affecting small blood vessels, leading to white matter hyperintensities (WMH).
- CSVD is clinically significant, contributing to strokes and vascular dementia.
- Statins are lipid-lowering drugs proven to reduce cardiovascular mortality.
Purpose of the Study:
- To systematically review and meta-analyze randomized controlled trials (RCTs) assessing statin therapy's impact on CSVD.
- To evaluate the effect of statins on white matter hyperintensities (WMH) in patients with CSVD.
Main Methods:
- A comprehensive literature search was conducted across major databases: PubMed, Embase, Cochrane Library, and Epistemonikos.
- Eighty-six articles were reviewed, with two RCTs included in the final meta-analysis.
Main Results:
- A non-significant trend indicated a reduction in WMH volume (MD = -4.44 mL; 95% CI: -10.19 to 1.31) in the statin group compared to controls.
- The observed trend did not reach statistical significance, suggesting limited evidence for statin efficacy in reducing WMH.
Conclusions:
- Current evidence on statin use for CSVD is limited.
- Further research is essential to explore the clinical and person-centered benefits of statins on cognition and function in CSVD patients.
Background:
Cerebral small vessel disease (CSVD) is a chronic, progressive disorder that affects small blood vessels in the brain's white matter. This white matter damage appears on brain imaging as white matter hyperintensities (WMH). Although CSVD is often asymptomatic, it causes one fifth of strokes and nearly half of all vascular dementia cases, highlighting its clinical importance. Statins, widely used to lower lipid levels, are effective for reducing cardiovascular mortality in high-risk groups and are recommended for patients with myocardial infarction and ischemic stroke.
Aim:
This systematic review and meta-analysis of randomized controlled trials aimed to evaluate the impact of statin therapy on CSVD.
Method:
A literature search was performed in PubMed, Embase, the Cochrane Library and Epistemonikos resulting in the full-text review of 86 articles, of which two were used for the meta-analysis.
Results:
A non-significant trend towards lower WMH volume in milliliters was observed in the statin group compared to controls, mean difference (MD) = -4.44 (95 % CI -10.19-1.31).
Conclusion:
There is limited evidence available for the use of stain-treatment for CSVD, and further research is needed as well as studies on the clinical and person-centered benefits of statins on cognition and functional level in persons with CSVD.
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