Association of Serum Alpha-Tocopherol and Retinol with the Extent of Coronary Lesions in Coronary Artery Disease

Abstract

Background and aims: Fat-soluble vitamins play an important role in the pathogenesis of cardiovascular disease and progression of atherosclerosis. This study aimed at investigating the relationship of the serum levels of alpha-tocopherol and retinol with the extent of coronary lesions in patients with coronary artery disease. Methods. Patients with coronary artery disease (n=177) aged 30–74 years, who underwent their first coronary angiography, were enrolled. The extent of coronary lesions was assessed using the Friesinger index (FI). Accordingly, patients were grouped as follows: FI = 0–4 (n=90), FI = 5–9 (n=50), and FI = 10–15 (n=37). Serum levels of vitamins were ‬determined via high-performance liquid chromatography and serum biochemical analysis. Results. Assessment of FI-based groups revealed that 50.8% patients had a coronary artery lesion to a low extent (FI 0–4). Individuals in this group were younger and had lower glucose and serum alpha-tocopherol levels than the other groups (p < 0.05). Low levels of alpha-tocopherol were more frequent in the FI 0–4 group than that in the other groups (p=0.03). No difference was observed between the mean serum retinol levels among the FI-based groups (n=0.492), and the low frequency of retinol was consistent among the FI groups (n=0.348). Conclusions. The low level of alpha-tocopherol together with the presence of dyslipidemia is probably associated with the initial events in atherosclerosis. Increased alpha-tocopherol levels in patients with more extensive coronary artery lesions may have resulted from altered vitamin E metabolism with increased oxidative stress.

Protective effect of pristine C60 fullerene nanoparticle in combination with curcumin against hyperglycemia‐induced kidney damage in diabetes caused by streptozotocin

“…Alpha tocopherol levels were observed to increase in the present study in the kidney tissue of diabetic rats (Table 3). In accordance with previous studies, increased levels of alpha tocopherol have been reported in the tissue of diabetic rats (Miranda et al., 2018; Miyazaki et al., 2013). The accumulation of retinol and alpha tocopherol in the kidney tissue of diabetic rats may have been decreased due to the beneficial effects of CUR and C60 on glucose metabolism.…”

“…Previous diabetes studies have reported increased levels of α‐tocopherol in plasma and liver tissue. Oxidative stress is able to regulate α‐TTP transcription upward (Miranda et al., 2018; Miyazaki et al., 2013). It has been announced that hyperglycemia, or insulin resistance, can lead to increase a‐tocopherol levels by regulating α‐TTP gene expression (Arulselvan & Subramanian, 2007; Miyazaki et al., 2013).…”

Selected Psychosocial Factors, Nutritional Behavior, and the Analysis of Concentrations of Selected Vitamins in Patients with Cardiovascular Diseases

“…A deficiency of β-carotene was particularly significant in our study. In the studies of Miranda et al [ 47 ], on the relationship between the severity of ischemic heart disease and plasma vitamin levels, a deficiency of α-tocopherol and retinol was found in some patients. In contrast, lower concentrations of these vitamins were observed in patients at the initial stage of the disease.…”

Retinol Levels and Severity of Patients with COVID-19

“…The control group came from the database of a previous study by our research group [23], consisting of participants recruited from a hemodynamics unit, selected for undergoing their first coronary angiography; however, only those who obtained a negative result for the diagnosis of coronary arterial disease were selected. In addition, none of these participants had any condition that affected vitamin A levels or could cause conflicts regarding the analysis of retinol for comparative purposes.…”