Highlighted Meetings SeriesVascular Oxidative Stress: The Common Link in Hypertensive and Diabetic Vascular DiseaseCohen, Richard A; Tong, XiaoYong PhDAuthor Information From the Vascular Biology Unit, Whitaker Cardiovascular Institute, Boston University School of Medicine, Boston, MA. Received for publication November 07, 2009; accepted February 09, 2010. The authors' laboratory is supported by National Institutes of Health grants R01 HL031607, PO1 HL081587, R01 AG27080, and P01 HL068758 and by a Strategic Alliance with the Institut de Recherche Servier. Dr. Tong is the recipient of an American Diabetes Association Junior Faculty Award, 7-09-JF-69. Dr. Cohen is a consultant to Institut de Recherche Servier. The authors report no conflicts of interest. Reprints: XiaoYong Tong, PhD, Vascular Biology Unit, X720, Boston University School of Medicine, 650 Albany Street, Boston, MA 02118 (e-mail: email@example.com). Journal of Cardiovascular Pharmacology: April 2010 - Volume 55 - Issue 4 - p 308-316 doi: 10.1097/FJC.0b013e3181d89670 Buy Metrics Abstract Vascular disease in hypertension and diabetes is associated with increased oxidants. The oxidants arise from NADPH oxidase, xanthine oxidase, and mitochondria. Superoxide anion and hydrogen peroxide are produced by both leukocytes and vascular cells. Nitric oxide is produced in excess by inducible nitric oxide synthase, and the potent oxidant, peroxynitrite, is formed from superoxide and nitric oxide. The damage to proteins caused by oxidants is selective, affecting specific oxidant-sensitive amino acid residues. With some important vascular proteins, for example, endothelial nitric oxide synthase, prostacycline synthase, and superoxide dismutase, oxidation of a single susceptible amino acid inactivates the enzyme. The beneficial effects of antioxidants, at least in animal models of hypertension and diabetes, can in part be ascribed to protection of these and other proteins. Mutant proteins lacking their reactive constituent can recapitulate some disease phenotypes suggesting a pathogenic role of the oxidation. Thus, many of the shared functional abnormalities of hypertensive and diabetic blood vessels may be caused by oxidants. Although studies using antioxidants have failed in patients, the successful treatment of vascular disease with HMG-CoA reductase inhibitors, thromboxane A2 antagonists, and polyphenols may depend on their anti-inflammatory effects and ability to decrease production of damaging oxidants. © 2010 Lippincott Williams & Wilkins, Inc.