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Fluvastatin therapy improves microcirculation in patients with hyperlipidaemia
E Haak1, C Abletshauser, S Weber
1Medical Department I, Center of Internal Medicine, University-Hospital, Johann Wolfgang Goethe-University, Frankfurt/Main, Germany.
Insights
Fluvastatin significantly improved microcirculation in patients with hyperlipidaemia within six weeks. This cholesterol-lowering drug enhanced blood flow in both nutritive and thermoregulatory capillaries.
Area of Science:
- Cardiovascular Medicine
- Pharmacology
Background:
- Hyperlipidaemia poses risks to microcirculatory function.
- Dietary control is often insufficient for managing hyperlipidaemia.
- Microvascular impairment contributes to cardiovascular complications.
Purpose of the Study:
- To evaluate the impact of fluvastatin on microcirculation in hyperlipidaemic patients.
- To assess fluvastatin's efficacy in patients with inadequately controlled cholesterol levels.
- To investigate fluvastatin's effects on both nutritive and thermoregulatory capillaries.
Main Methods:
- Double-blind, placebo-controlled study.
- Inclusion of hyperlipidaemic patients (LDL-C > 160 mg/dL, TG < 350 mg/dL).
- Assessment of microcirculation using capillary microscopy and laser Doppler fluxmetry at the nailfold.
- Fluvastatin 40 mg BID vs. placebo for 12 weeks post-dietary run-in.
Main Results:
- Fluvastatin significantly reduced time to peak flow during postocclusive reactive hyperaemia (P < 0.0001).
- Capillary microscopy indicated improved microcirculatory function with fluvastatin therapy.
- Laser Doppler fluxmetry confirmed enhanced microcirculation in thermoregulatory capillaries.
- Significant reductions in total and LDL-cholesterol were observed.
Conclusions:
- Fluvastatin therapy effectively improves microcirculation in hypercholesterolaemic patients.
- Enhancements in microcirculation were evident within six weeks of fluvastatin treatment.
- Fluvastatin demonstrates benefits for both nutritive and thermoregulatory capillary function.
Abstract:
The purpose of this study was to investigate the effect of fluvastatin on the microcirculation of patients with hyperlipidaemia (low-density lipoprotein cholesterol > 160 mg/dL, triglycerides < 350 mg/dl) inadequately controlled by diet. After a dietary run-in of 4 weeks, patients were randomised in a double-blind study to receive fluvastatin 40 mg twice daily (n = 24) or placebo (n = 24) for 12 weeks. The effect on microcirculation was assessed using capillary microscopy and laser Doppler fluxmetry at the nailfold at baseline and at 6 and 12 weeks after initiation of therapy. Capillaroscopy showed that fluvastatin improved microcirculation, i.e. time to peak flow during postocclusive reactive hyperaemia dropped from 19.7 +/- 7.2 s at baseline to 12.3 +/- 9.5 s at week 6 (P < 0.01) and 10.6 +/- 6.5 s at week 12 (P < 0.0001). These results were confirmed using laser Doppler fluxmetry to study microcirculation in thermoregulatory capillaries at the same site. A significant decrease in total and LDL-cholesterol was achieved during fluvastatin therapy. In conclusion, fluvastatin therapy improves microcirculation in nutritive as well as thermoregulatory capillaries in hypercholesterolaemic patients within 6 weeks.