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[Effect of atorvastatin treatment on the hemorheologic and hemostatic parameters in chronic cerebrovascular patients]
László Szapáry1, Beáta Horváth, Zsolt Márton
1Pécsi Tudományegyetem, Altalános Orvostudományi Kar, Neurológiai Klinika, Pécs. laszlo.szapary@aok.pte.hu
Insights
Low-dose atorvastatin improves hemorheologic parameters and reduces platelet aggregation in cerebrovascular patients. This statin therapy offers benefits beyond lipid lowering for stroke prevention.
Area of Science:
- Cardiovascular Medicine
- Neurology
- Pharmacology
Background:
- Cerebrovascular diseases are associated with altered hemorheologic and hemostatic parameters.
- Statin therapy, including atorvastatin, is crucial for ischemic stroke prevention.
- Potential lipid-independent mechanisms of statins warrant investigation.
Purpose of the Study:
- To review the effects of atorvastatin on stroke prevention, hemorheologic parameters, and hemostasis.
- To investigate the short-term impact of low-dose atorvastatin on hemorheologic parameters, endothelial dysfunction, and platelet aggregation.
Main Methods:
- 27 chronic cerebrovascular patients with hyperlipidemia received 10 mg atorvastatin daily.
- Measurements included serum lipids, hemorheologic parameters (viscosity, red blood cell aggregation/deformability), and platelet aggregation.
- Endothelial dysfunction (von Willebrand factor activity) was assessed before and after treatment.
Main Results:
- Atorvastatin significantly reduced total cholesterol (28%) and LDL-cholesterol (38-40%).
- Improved whole blood viscosity and red blood cell deformability were observed.
- Significantly decreased collagen-induced platelet aggregation and improved von Willebrand factor activity were noted.
Conclusions:
- Atorvastatin exhibits complex beneficial effects extending beyond lipid reduction.
- Short-term, low-dose atorvastatin therapy improves hemorheologic parameters, platelet aggregation, and endothelial function.
- These findings support atorvastatin's role in managing cerebrovascular disease through multiple mechanisms.
Unlabelled:
Hemorheologic and hemostatic parameters are known to be altered in cerebrovascular diseases. Statin therapy is an effective treatment in the prevention of ischemic stroke, the beneficial effects may also involve lipid-independent mechanisms.
Aims:
In their publication the authors review the references based on the effect of atorvastatin on stroke prevention, hemorheologic and hemostatic parameters, referred to in their previous study, investigating the short-term effect of low-dose atorvastatin on hemorheologic parameters, and endothelial dysfunction, platelet aggregation.
Methods:
27 chronic cerebrovascular patients (mean age: 61 +/- 8 years) with hyperlipidemia were investigated for serum lipid levels, hemorheologic parameters (hematocrit, plasma fibrinogen level, plasma and whole blood viscosity, red blood cell aggregation and deformability) and platelet aggregation at baseline, and after one and three months treatment with 10 mg atorvastatin daily. Endothelial dysfunction, characterized by von Willebrand factor activity was measured before and after 1-month treatment.
Results:
The mean decrease of plasma total cholesterol level was 28% both after 1 and 3 months ( p < 0.001), that of LDL-cholesterol was 40% and 38% ( p < 0.001) compared to baseline values. Atorvastatin significantly improved whole blood viscosity after 3-month treatment and red blood cell deformability even after 1-month treatment ( p < 0.05). Collagen induced platelet aggregation provided a significant ( p < 0.001) decrease compared to that of baseline values beside unaltered antiplatelet therapy. Von Willebrand factor activity was also improved significantly ( p < 0.05) after 1-month treatment.
Conclusions:
Data of the literature and findings of the authors show that the beneficial effects of atorvastatin are complex. Besides lipid lowering, atorvastatin can improve hemorheologic parameters, platelet aggregation and endothelial dysfunction after short-term and low-dose therapy.
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