Palm Olein Oil Effect on the Heart Tissue of Male Rats

Abstract

Background: Palm olein oil is one of the most widely used oils, so the available reports show that its consumption has different health effects, some of them are beneficial and some are harmful. Objectives: This study aimed to investigate the effect of heated and unheated date olein in different doses on the hearts of male rats. Methods: In this study, 40 male rats were divided into 5 groups: Sham group with a regular diet, palm oil group with 10% (W/W) palm oil diet, palm oil group with 20% (W/W) palm oil diet, ghee oil group 7.5% (W/W) and heated palm oil group with 20% (W/W) palm oil diet. Palm olein oil was added to rat foods in experimental groups for 60 days. 24 hours later, the rats were dissected, then the heart tissue of the rats was sampled and tissue sections were prepared and analyzed with an optical microscope. Results: The results of this study indicated that fresh unheated palm oil does not have any harmful effects on the heart tissue, but the consumption of heated palm oil causes to damage the heart tissue. Conclusions: The results showed the negative effects are correlated to the dose and the heating. The heart tissues which treated with higher doses and heated palm olein oil had more side effects.