Model design for screening effective Antihyperlipidemic drugs using zebrafish system

Area of Science:

• Pharmacology
• Zebrafish models
• Drug screening

Background:

• Hyperlipidemia is a major risk factor for cardiovascular diseases.
• Developing efficient methods for screening lipid-lowering drugs is crucial.
• Zebrafish offer a promising vertebrate model for drug discovery due to their genetic tractability and rapid development.

Purpose of the Study:

• To establish and validate a high-fat diet-induced hyperlipidemia zebrafish model for screening lipid-lowering drugs.
• To evaluate the efficacy of atorvastatin, fenofibrate, and ezetimibe in this model.
• To assess Oil red O staining as a rapid screening method.

Main Methods:

• Zebrafish were fed a high-fat diet (HFD) for 7 weeks to induce hyperlipidemia.
• Drug concentrations (lowest, intermediate, highest) of atorvastatin (ATV), fenofibrate (FEF), and ezetimibe (EZE) were determined.
• Serum lipid levels (cholesterol, triglyceride) were measured.
• Oil red O staining and fluorescence labeling were used to visualize lipid accumulation.
• Statistical analysis was performed using SPSS software.

Main Results:

• The HFD successfully induced hyperlipidemia, increasing cholesterol and triglyceride levels in zebrafish (p<0.05).
• Atorvastatin and fenofibrate significantly reduced triglyceride levels at the lowest concentration, while ezetimibe did not.
• All three drugs reduced cholesterol levels.
• Atorvastatin showed a concentration-dependent effect, while fenofibrate and ezetimibe required intermediate or highest concentrations.
• Oil red O staining proved to be an effective and rapid method for assessing drug efficacy.

Conclusions:

• The HFD-induced zebrafish model is a viable and successful platform for screening lipid-lowering drugs.
• Oil red O staining is a rapid and effective method for this screening process.
• This model facilitates the evaluation of drug efficacy and concentration-dependent effects.