Abstract
The aim of this clinical study was to determine the impact of the consumption of chicken eggs enriched with n-3 polyunsaturated fatty acids, selenium, vitamin E, and lutein on micro- and macrovascular endothelium-dependent dilation, inflammation biomarkers, and oxidative stress levels in participants with chronic coronary syndrome (CCS). This was a double-blind, placebo-controlled clinical study that included 30 CCS participants (9 women, 21 men) randomized into the control group (N = 15), who ate ordinary chicken eggs (three per day), and the Nutri4 group (N = 15), who ate enriched eggs (three per day) for 21 days. Microvascular and macrovascular endothelium-dependent vasodilation was evaluated by measuring forearm skin post-occlusive reactive hyperemia (PORH) and acetylcholine-induced dilation (AChID) and the flow-mediated dilation (FMD) of the brachial artery, respectively. The serum lipid profile, anti- and proinflammatory cytokine levels, serum concentration of nitric oxide synthase (NOS) isoforms, and oxidative stress biomarkers were measured before and after the diet protocols. Enriched, but not regular, chicken eggs significantly improved microvascular PORH and AChID and macrovascular FMD, increased the serum concentration of inducible NOS, decreased serum triglyceride levels, and decreased proinflammatory cytokine IL-17A and TGF-1β levels compared to initial measurements. Patients with CCS can benefit from the consumption of enriched chicken eggs due to improved lipid biomarkers, a more favorable anti-inflammatory milieu, and improved vascular relaxation at micro- and macrovascular levels.
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