Biological Antioxidant Potential Negatively Correlates With Carotid Artery Intima-Media Thickness

Abstract

SummaryOxidative stress is a crucial factor in the pathogenesis and development of cardiovascular disease. Recently, simplified methods for the detection of reactive oxygen species (ROS) using the derivatives of reactive oxygen metabolites (dROMs) test as an index of ROS products and the biological antioxidant potential (BAP) test as an index of antioxidant potential have been utilized. These methods are easy to perform, quick, inexpensive since they use small equipment, and provide reliable results compared with established oxidative stress and antioxidant markers. Because oxidative stress has been shown to represent the balance of production of ROS and antioxidant capacity, it is more appropriate to evaluate ROS and antioxidant capacity simultaneously. However, no study has examined the associations among d-ROMs, BAP values, and carotid artery intima-media thickness (IMT) concurrently. Therefore, we studied the associations among dROMs, BAP values, and the carotid artery IMT. Carotid artery IMT, blood pressure (BP), fasting circulating d-ROMs, BAP, glucose metabolism, lipid, and C-reactive protein levels were measured in 95 subjects (age: 49.5 ± 13.8 years; men: 41; women: 54), including 42 healthy subjects and 53 patients with hypertension, dyslipidemia, and diabetes mellitus who were not on medication. The results of multiple regression analysis revealed that dependent carotid artery IMT determinants remained significantly associated with age, systolic BP, total cholesterol, and BAP, whereas dependent BAP determinants remained significantly associated with body mass index and carotid artery IMT. BAP was strongly correlated with carotid artery IMT in our cohort. Our results suggest that BAP may be a useful risk marker for carotid atherosclerosis. (Int Heart J 2016; 57: 220-225) Key words: Antioxidant markers, Carotid atherosclerosis, Oxidative stress O xidative stress is involved as a crucial factor in the pathogenesis and development of a variety of chronic and degenerative diseases, including aging, cancer, and cardiovascular disease. An enhanced oxidative stress status, defined as an imbalance between oxidants and antioxidants in favor of the former, plays a significant role in the onset and progression of atherosclerosis.1-3) Levels of oxidative stress markers, such as thiobarbituric acid-reactive substances (TBARSs), 4) 8-iso-prostaglandin (PG) F 2 α, 5) oxidized low-density lipoprotein (LDL) (oxLDL), 6) and myeloperoxidase (MPO), 7,8) independently predict an increased risk for coronary artery disease (CAD). In contrast, glutathione peroxidase (GPx), superoxide dismutase (SOD), catalase enzymes, and total antioxidant status (TAS) are antioxidant markers that constitute the first line of defense against oxidative stress by removing key reactive oxygen species (ROS).9) Meta-analyses of observational studies have identified inverse associations of circulating SOD, GPx, and catalase activity levels with CAD. 10)Furthermore, another study has demonstrated that a low GPx1 activity level was independently a...

Impaired Oxidative Status Is Strongly Associated with Cardiovascular Risk Factors

“…Interestingly, in a recent paper, Yagi and colleagues [ 55 ] demonstrated that BAP was strongly correlated with carotid artery IMT suggesting that it may be considered a suitable risk marker for carotid atherosclerosis; moreover, they postulate that the measurements of BAP may be superior to the measurements of glutathione peroxidase, superoxide dismutase, catalase, and total antioxidant status for the assessment of antioxidant potential. Our results emphasize that the first detectable event of a redox disturbance is the repairing intervention of the antioxidant barrier that is thus decreased as overutilized.…”

Atherosclerosis-related biomarkers in women with endometriosis: The effects of dienogest and oral contraceptive therapy

“…In the first study, the IMT was correlated with d-ROMs in a population with hypercholesterolemia [ 28 ]. In the second study, the IMT was not correlated with d-ROMs in healthy people and those with mild disease conditions [ 29 ]. This discrepancy was likely to attributable to the differences in subject backgrounds and age.…”

Determinants of the Change in Arterial Stiffness in Peritoneal Dialysis Patients

“…The thickness of the carotid artery walls was measured on straight longitudinal 10 mm segments of the common carotid artery at positions 2-3 cm apart from the carotid bulb. 6,16) The thickness was evaluated in arterial segments free of plaques and was defined as the distance between the leading edge of the most internal echogenic line (lumen-intima interface) and the second echogenic line (media-adventitia interface). Measurement of body fluid volume: Multi-frequency segmental bioelectrical impedance was measured by using the InBody 720.…”