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Comparative study of ezetimibe and atorvastatin alone and in combination on lipid profile in rats
Anju Prasad1, Pratyay Pratim Datta, Ritesh Roy
1Department of Pharmacology, Hi-Tech Medical College and Hospital, Bhubaneswar, Odisha, India.
Insights
Ezetimibe and Atorvastatin combination therapy shows comparable lipid-lowering efficacy to high-dose Atorvastatin but with fewer side effects. This combination offers a potentially safer alternative for managing hyperlipidemia.
Area of Science:
- Pharmacology
- Cardiovascular Medicine
- Biochemistry
Background:
- Hyperlipidemia is a significant global health concern linked to hypertension and atherosclerosis.
- Statins are common hyperlipidemia treatments, but high doses can cause adverse effects.
- Ezetimibe presents a newer, potentially safer option for hyperlipidemia management.
Purpose of the Study:
- To compare the efficacy of Ezetimibe and Atorvastatin, alone and in combination, on lipid profiles in rats.
- To evaluate the safety and effectiveness of a combined low-dose Atorvastatin and Ezetimibe regimen.
- To identify potential alternatives to high-dose statin therapy for hyperlipidemia.
Main Methods:
- 60 rats were fed an atherogenic diet for 12 weeks.
- Rats were divided into six groups, receiving either diet alone or various doses of Ezetimibe and Atorvastatin (alone or combined) after four weeks.
- Blood lipid profiles were measured at baseline, 4 weeks, and 12 weeks.
Main Results:
- All treatment groups showed significant improvements in lipid profiles compared to the control group.
- High-dose Atorvastatin (8mg/kg) demonstrated comparable efficacy to the combination of low-dose Atorvastatin (4mg/kg) and Ezetimibe (1mg/kg).
- No significant difference in lipid parameters was observed between high-dose Atorvastatin and the combination therapy group.
Conclusions:
- High-dose Atorvastatin is associated with increased adverse effects.
- The combination of low-dose Atorvastatin and Ezetimibe offers comparable lipid-lowering efficacy to high-dose Atorvastatin.
- This combination therapy represents a promising, potentially safer alternative for managing hyperlipidemia.
Introduction:
Coronary heart disease and hyperlipidemia is a global problem in today's world. A large number of people suffer from hypertension, atherosclerosis and all these has strong association with the hyperlipidemia. There are many drugs for the treatment of hyperlipidemia, but statins are most commonly used. But, with high dose of statins, the side effect is also there which restricts its use in high dose. Ezetimibe is a comparatively new drug for the treatment of hyperlipidemia having lesser adverse effect as compared to statin. This study has been planned to find out the comparative efficacy of Ezetimibe and Atorvastatin alone and in combination on the lipid profile in rats.
Methodology:
This study was conducted in SCB Medical College, Cuttack. 60 rats were fed on atherogenic diet. These were divided in six groups having ten rats in each group and followed for 12 weeks. Group I received only atherogenic diet. All other groups received drugs after four weeks. Group II received Ezetimibe 1mg/kg, Group III received Ezetimibe 2mg/kg, Group IV received Atorvastatin 4mg/kg, Group V received Atorvastatin 8mg/kg and Group VI received Atorvastatin 4mg/kg and Ezetimibe 1mg/kg. Blood lipid profile measured at zero week, four weeks and 12 weeks.
Results:
All the lipid profile parameters improved significantly with treatment groups as compared with control group. There was no significant difference in the level of different lipid parameters between Group V (Atorvastatin 8mg/kg) and Group VI (Atorvastatin 4mg/kg and Ezetimibe 1mg/kg).
Conclusion:
High dose of Atorvastatin is associated with more adverse effect. The efficacy of high dose of Atorvastatin is comparable to combination of low dose Atorvastatin with Ezetimibe. This combination has lesser side effects. So, this can be a good alternative.
