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Published on: November 10, 2017
The use of fibric Acid derivatives in cardiovascular prevention
Nadia Khoury1, Anne Carol Goldberg
1Washington University School of Medicine, Campus Box 8127, 660 South Euclid Avenue, St. Louis, MO, 63110, USA.
Insights
Fibrates may reduce non-fatal coronary events in patients with high triglycerides and low HDL cholesterol, particularly when added to statin therapy for dyslipidemia. However, they do not decrease overall mortality and are not a first-line treatment.
Area of Science:
- Cardiology
- Pharmacology
- Lipidology
Background:
- Low-density lipoprotein (LDL) cholesterol reduction effectively prevents atherosclerotic cardiovascular disease.
- Residual cardiovascular risk persists despite statin therapy, highlighting the need for additional lipid-modifying strategies.
- Fibrates, known to reduce triglycerides and increase high-density lipoprotein (HDL) cholesterol, have shown mixed results in clinical outcomes trials.
Purpose of the Study:
- To evaluate the role of fibrates in managing dyslipidemia and residual cardiovascular risk.
- To assess the efficacy of fibrates in reducing cardiovascular events, particularly in specific patient subgroups.
- To determine the optimal place of fibrates in the context of statin therapy.
Main Methods:
- Review of clinical trials and meta-analyses on fibrate therapy.
- Analysis of post-hoc data from fibrate outcome trials.
- Examination of fibrate effects on lipid profiles and cardiovascular events.
Main Results:
- Fibrates demonstrated a reduction in primarily non-fatal coronary events, without impacting total mortality.
- Benefits were most pronounced in patients with elevated triglycerides and low HDL cholesterol levels.
- Adding fibrates to statin therapy showed particular benefit in high-risk patients with diabetes or metabolic syndrome.
Conclusions:
- Fibrates are not first-line agents for dyslipidemia but are valuable adjuncts for high-risk patients on statins with persistent atherogenic lipid profiles.
- The primary benefit of fibrates lies in reducing non-fatal coronary events in specific dyslipidemic populations.
- Fibrates play a role in managing complex lipid disorders, especially in conjunction with statins for patients with diabetes or metabolic syndrome.
Opinion Statement:
Clinical trials have demonstrated the benefit of reduction of low-density lipoprotein (LDL) cholesterol levels in the prevention of atherosclerotic cardiovascular disease. Evidence is less robust for the effect of reduction of triglyceride levels and increase of high-density lipoprotein (HDL) cholesterol levels. In spite of the decrease of cardiovascular events in trials of LDL cholesterol-lowering medications, considerable residual risk remains, even with the use of high-dose statins. The fibric acid derivatives or fibrates reduce triglyceride and increase HDL cholesterol levels, effects that would be expected to affect cardiovascular events. However, clinical outcomes trials with fibrates have shown mixed results. Post-hoc analyses of fibrate trials as well as several meta-analyses suggest an overall decrease in primarily non-fatal coronary events without decrease in total mortality. The effects are most apparent in patients with elevated triglycerides and low HDL cholesterol levels. Statin therapy is the treatment of choice for most patients with dyslipidemia. The addition of a fibrate appears to be most beneficial in high-risk patients who continue to have significant dyslipidemia on statin therapy, most notably patients with diabetes mellitus or the metabolic syndrome. Thus, fibrates are not first-line drugs, but they do have a place in the management of the atherogenic lipid profile.
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