The Mediterranean and CHO diets decrease VCAM-1 and E-selectin expression induced by modified low-density lipoprotein...

Area of Science:

• Cardiovascular Research
• Nutritional Science
• Endothelial Cell Biology

Background:

• Oxidative modification of low-density lipoprotein (LDL) is a key factor in atherosclerosis development.
• Diet significantly influences LDL modification and subsequent vascular inflammation.

Purpose of the Study:

• To investigate the differential effects of LDL modified by three diets (SFA-rich, CHO, Mediterranean) on VCAM-1 and E-selectin expression in HUVECs.
• To assess the impact of dietary interventions on LDL's oxidative properties.

Main Methods:

• Healthy males consumed SFA-rich, CHO, and Mediterranean diets for four weeks each in a crossover design.
• LDL was isolated, oxidized, and incubated with HUVECs, followed by TNF-alpha stimulation.
• VCAM-1 and E-selectin expression were quantified using cellular ELISA; LDL oxidation kinetics were measured.

Main Results:

• LDL isolated from Mediterranean and CHO diets induced significantly lower VCAM-1 and E-selectin expression in HUVECs compared to the SFA diet.
• No significant difference in adhesion molecule expression was observed between the Mediterranean and CHO diets.
• LDL from the Mediterranean diet exhibited a longer lag time in oxidation compared to the CHO diet, inversely correlating with E-selectin expression.

Conclusions:

• Both Mediterranean and carbohydrate-rich diets may mitigate the pro-inflammatory effects of modified LDL on endothelial cells.
• These dietary patterns show potential in reducing the vascular inflammatory environment associated with atherosclerosis.