Effect of Egusi Melon Oil on Lecithin: Cholesterol Acyltransferase Activity in Rats Fed a Cholesterol Diet

The effect of feeding egusi melon oil as a supplement to a cholesterol-based diet on serum lecithin: cholesterol acyltransferase activity of rats was evaluated. The rats were divided into two groups designated: control and test respectively. Rats in the test group were fed 5% cholesterol diet supplemented with 5% egusi melon oil while the control rats received 5% cholesterol diet without egusi melon oil. After 6 weeks of diet feeding, the enzyme activity was decreased significantly (p<.05) in the egusi melon oil-fed rats compared with the control. The test group also showed relative significant decreases in the serum levels cholesteryl ester and lysolecithin (p<.05) and increase levels of lecithin (p<.05). Significant decreases (p<.05) were also observed in serum total and free cholesterol in the egusi melon oil treated group compared to the control group. The implications of these results are discussed with respect to hypercholesterolemia

Palm and Egusi melon oils lower serum and liver lipid profile and improve antioxidant activity in rats fed a high fat diet

Many studies have suggested that oils high in saturated fatty acids are responsible for the cholesterolraising effect of saturated fat. The aim of this study was to compare the effect of palm oil (rich in saturated fatty acid) and egusi melon oil (rich in unsaturated fatty acids) on serum and liver lipids and their antioxidant status. Lipid profiles, malondialdehyde (MDA) levels and activities of glutathione peroxidase (GSH-Px) and glutathione reductase (GSSG-Rx) were determined in serum and liver of rats fed a high cholesterol diet for six weeks. Palm oil- and egusi melon-fed rats exhibited improved serum and liver lipid profiles and had a more significant reduction in serum and liver MDA levels as compared to control rats. Similarly, GSH-Px and GSSG-Rx activities were significantly higher in rats fed palm and egusi melon oils compared to the control. It could thus be concluded based on these findings, that palm oil and egusi melon improve serum and liver lipid profile in rats fed a high fat diet and their consumption could thus offer protection against lipid-related disorders. Key words: Palm oil, egusi melon oil, saturated fatty acids, antioxidant

Modulation of Lipoprotein Cholesterol Levels in Plasmodium berghei Malarial Infection by Crude Aqueous Extract of Ganoderma lucidum

In this study, attempt is made to establish changes in serum and liver lipoprotein cholesterols accompanying Plasmodium berghei malarial infection in mice treated with aqueous extract of Ganoderma lucidum at 100, 250, and 500 mg/kg body weight in comparison with 15 mg/kg chloroquine (CQ). Significant increases in all the lipoprotein fractions were observed in infected untreated mice compared with normal control mice. Treatment with 100 and 250 mg/kg G. lucidum extract produced significant reduction in serum total cholesterol (TC) and low-density cholesterol (LDL-C) contents compared with 500 mg/kg G. lucidum and CQ. Treatment with CQ, however, produced significant reduction in hepatic TC and LDL-C compared with the extract. A dosedependent significant increase in serum high-density lipoprotein cholesterol (HDL-C) was observed in the G. lucidum treated mice compared with normal control but significantly lower compared with CQ-treated mice. Liver HDL-C level was significantly higher in CQ-treated mice compared with normal control and significantly lower compared with G. lucidum-treated and infected untreated mice. A dose-dependent effect of the extract was observed in both serum and liver very-low density lipoprotein cholesterol (VLDL-C). The implication of these results is discussed with respect to the parasite survival and proliferation in the serum and liver