Increased reactive oxygen metabolites is associated with cardiovascular risk factors and vascular endothelial damage in middle-aged Japanese subjects
Tomonori Sugiura1, Yasuaki Dohi1, Hiroyuki Takase2, Sumiyo Yamashita1, Satoru Tanaka1, Genjiro Kimura1
1Department of Cardio-Renal Medicine and Hypertension, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan; 2Department of Internal Medicine, Enshu Hospital, Hamamatsu, Japan
Background: Vascular endothelium, a provider of nitric oxide, is essential for the maintenance of homeostasis in healthy vascular systems. Increased oxidative stress promotes vascular inflammation and is a common pathway involved in endothelial damage. The present study sought to investigate the usefulness of derivative reactive oxygen metabolites (d-ROM) as an oxidative stress marker for detecting endothelial damage in the clinical setting in subjects with early-stage atherosclerosis.
Methods: Study 1 investigated the relationship between serum d-ROM levels and cardiovascular risk factors in apparently healthy middle-aged subjects (n = 1992, 49 ± 8 years) who participated in our health checkup program. Study 2 analyzed the association between d-ROM levels and endothelial function assessed by flow-mediated dilation and that between d-ROM levels and high-sensitivity C reactive protein (hs-CRP) levels in middle-aged outpatients with mild-to-moderate cardiovascular risk (n = 43, 40 ± 5 years).
Results: In study 1, the d-ROM level was independently correlated with age, systolic blood pressure, fasting plasma glucose, low-density lipoprotein cholesterol, and brain natriuretic peptide in univariate and multivariate regression analysis. In study 2, the d-ROM level was correlated positively with the hs-CRP level and inversely with the flow-mediated dilation value. Patients in the highest tertile of d-ROM had significantly lower flow-mediated dilation values compared with patients in the other tertiles. Moreover, after subdivision of patients into four groups according to d-ROM and hs-CRP levels, patients with high levels of both d-ROM and hs-CRP showed significantly reduced flow-mediated dilation as compared with those with low levels of both indices.
Conclusion: The close relationship of d-ROM with cardiovascular risk factors, brain natriuretic peptide, inflammatory markers (hs-CRP), and endothelial function (flow-mediated dilation) suggest that d-ROM is a useful oxidative stress marker for detection of endothelial damage in the clinical setting. Assessment of d-ROM, especially combined with hs-CRP, may be a possible predictor of cardiovascular disease.
Keywords: atherosclerosis, endothelial dysfunction, inflammation, oxidative stress
This work is published and licensed by Dove Medical Press Limited. The full terms of this license are available at https://www.dovepress.com/terms.php and incorporate the Creative Commons Attribution - Non Commercial (unported, v3.0) License. By accessing the work you hereby accept the Terms. Non-commercial uses of the work are permitted without any further permission from Dove Medical Press Limited, provided the work is properly attributed. For permission for commercial use of this work, please see paragraphs 4.2 and 5 of our Terms.Download Article [PDF]