Thomas K Schwarz

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BACKGROUND It is not known whether the beneficial effects of N-acetylcysteine (NAC) in conditions associated with increased oxidative stress are caused by direct superoxide scavenging. We therefore compared the acute superoxide scavenging efficacy of NAC against vitamin C (VITC) on impaired endothelium-dependent vasodilation in subjects with essential(More)
OBJECTIVE We examined the value of renal resistive index (RRI) for prevalence of cardiovascular target organ damage in therapy-resistant hypertension in comparison to low-grade albuminuria. METHODS Eighty-four patients with therapy-resistant hypertension (age 59.7 +/- 8.1 years) were screened for cardiovascular target organ damage with coronary computed(More)
ACE inhibitors (ACEI) and angiotensin receptor blockers (ARB) are superior to dihydropyridine calcium-antagonists (DHP) with regard to reduction of albuminuria in patients with diabetic nephropathy. It has been argued that with blood pressure outside the targets DHP may exaggerate albuminuria in hypertensive patients. We addressed the question in an(More)
Vascular damage is aggravated in animal models of hypertension with mineralocorticoid (MR) excess and in hypertensive patients with primary hyperaldosteronism. MR antagonism has shown to provide effective blood pressure (BP)-control in patients with treatment resistant hypertension (TRH), but the concurrent effects on the vasculature have not been examined.(More)
OBJECTIVES In patients with hypertension left ventricular hypertrophy (LVH) is associated with genetic variations of the angiotensin type 2 receptor (AT2R). Hypertension and LVH are often aggravated by salt intake. Our objective was to assess the relationship between AT2R gene variation and salt intake and their impact on left ventricular mass (LVM). (More)
BACKGROUND The activity of the renin-angiotensin system influences blood pressure (BP) and cardiovascular structure in humans. Therefore, we questioned whether left-ventricular (LV) structure and function are influenced by the -20 A/C variant of the angiotensinogen (AGT) gene in young normotensive or mildly hypertensive patients. METHODS A homogenous(More)
BACKGROUND The aim of this study was to investigate the impact of short-term treatment with the angiotensin II receptor blocker (ARB) valsartan on retinal endothelial function in elderly patients with mild to moderate essential hypertension. METHODS In an open-labeled study, 20 elderly, male patients with arterial hypertension (WHO I-II) were treated with(More)
BACKGROUND In humans, renal endothelial function is assessed by the vasoconstrictive response to L-NG-monomethyl arginine (L-NMMA). We hypothesized that Doppler sonographic measurements of the renal resistive index in response to inhibition of nitric oxide synthase offer a new methodological approach for testing renal endothelial function. METHODS(More)
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