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Orv Hetil. 2008 Jul 13;149(28):1323-7. doi: 10.1556/OH.2008.28402.

[Vascular endothelial dysfunction, oxidative stress--a new topic within the referral section of Orvosi Hetilap].

[Article in Hungarian]

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The author describes some of the numerous domains regarding the new topic called "Vascular endothelial dysfunction, oxidative stress". The endothelium is responsible for the constancy and integrity of the milieu interieur by producing various substances. Endothelial dysfunction occurs when there is imbalance between vasodilators and vasoconstrictors, growth factors and their inhibitors, proinflammatory and antiinflammatory agents, prothrombotic and fibrinolytic activities. The reason for this imbalance may be response to vascular endothelial or intimal injury caused by mechanical, physical, chemical, microbiological, immunologic, genetic damage or any of their combination. Endothelial dysfunction occurring on the huge inner surface of the vessels (the endothelium) is responsible for the triggering of atherosclerosis, which is a chronic vascular disease. All the risk factors of vascular pathology are leading to chronic (cardio)vascular diseases by causing endothelial dysfunction. Decreased endogenous antioxidative capacity leads to oxidative stress by free radical reactions of physiological oxidative metabolic processes, ending as the ultimate reason for endothelial dysfunction induced by risk factors. The therapeutic and preventive effects of causal antioxidant treatments having intracellular and mitochondrial effects (statins, angiotensin-converting-enzyme inhibitors, angiotensin-receptor-blockers, acetylsalicylic acid, and third generation beta-blockers) should be emphasized. It is also important to underline the physiological-pathophysiological-therapeutic consubstantiality and systemic nature of human vasculature and to emphasize the preventive-therapeutic significance of the vascular consequence cascade. And finally, there has been large process in the assessment of oxidative stress and consecutive endothelial dysfunction which revolutionized our clinical point of view.

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