Can raisins ameliorate the hypercholesterolaemia-induced cardiac affection?

Area of Science:

• Cardiovascular Science
• Nutritional Science
• Toxicology

Background:

• High cholesterol diets (HCD) negatively impact cardiac muscle health.
• Dietary interventions are crucial for mitigating HCD-induced cardiovascular damage.

Purpose of the Study:

• To investigate the cardioprotective effects of raisins against HCD-induced damage.
• To evaluate biochemical and histopathological changes in the cardiac muscle of rats fed HCD with and without raisins.

Main Methods:

• Rats were divided into control, raisin-fed, HCD-fed, and HCD-raisin fed groups for 13 weeks.
• Biochemical analysis of blood glucose, lipids, and hormones.
• Histopathological examination of cardiac tissue, including immunohistochemistry for alpha smooth muscle actin and endothelial nitric oxide synthase.

Main Results:

• Raisins significantly reduced blood glucose, insulin, cholesterol, triglycerides, and LDL levels.
• Raisins increased HDL levels and decreased cardiac degeneration, inflammation, and vascular damage.
• Raisins reduced fibrosis and modulated key protein expressions (alpha-SMA, eNOS).

Conclusions:

• Raisins demonstrate a significant cardioprotective effect against HCD-induced biochemical and histopathological alterations.
• Dietary inclusion of raisins is recommended for individuals consuming high-fat diets to support cardiovascular health.