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Genomes and Genes | Georg NickenigSummaryAffiliation: Saarland University Country: Germany Publications
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Publications
Should angiotensin II receptor blockers and statins be combined?Georg Nickenig
Department of Internal Medicine III, University Hospital of the Saarland, Homburg Saar, Germany
Circulation 110:1013-20. 2004
Mechanisms of increased vascular superoxide production in an experimental model of idiopathic dilated cardiomyopathyHanke Mollnau
Medizinische Klinik II, , Mainz, Germany
Arterioscler Thromb Vasc Biol 25:2554-9. 2005..CONCLUSIONS: Oxidative stress in CHF is mediated by NADPH oxidase and an uncoupled NOSIII secondary to an activation of the renin-angiotensin system leading to impaired NO downstream signaling...
Physical inactivity increases oxidative stress, endothelial dysfunction, and atherosclerosisUlrich Laufs
Klinik fur Innere Medizin III, niversitätsklinikum des Saarlandes, Homburg Saar, Germany
Arterioscler Thromb Vasc Biol 25:809-14. 2005..The underlying molecular mechanisms are incompletely understood. Reactive oxygen species (ROS) contribute to endothelial dysfunction and atherosclerosis. An important source of vascular ROS is the NADPH oxidase...
Paclitaxel balloon coating, a novel method for prevention and therapy of restenosisBruno Scheller
Department of Internal Medicine III Cardiology Angiology, University of Saarland, Homburg Saar, Germany
Circulation 110:810-4. 2004..The aim of the present study was to evaluate a novel method of local drug delivery based on angioplasty balloons...
Effect of atorvastatin 80 mg on endothelial cell function (forearm blood flow) in patients with pretreatment serum low-density lipoprotein cholesterol levels <130 mg/dlSven Wassmann
Medizinische Klinik und Poliklinik, Innere Medizin III, Universitatskliniken des Saarlandes, Homburg Saar, Germany
Am J Cardiol 93:84-8. 2004..Statin treatment improved hyperemic forearm blood flow and decreased serum markers of oxidative stress and inflammation...
Telmisartan inhibits beta2-integrin MAC-1 expression in human T-lymphocytesAndreas Link
Klinik fur Innere Medizin III, Universitat des Saarlandes, Homburg Saar, Germany
J Hypertens 24:1891-8. 2006..Although pro-inflammatory properties of angiotensin II as well as anti-inflammatory effects of AT1 receptor antagonists are well known, the underlying mechanisms are poorly understood...
Inhibition of diet-induced atherosclerosis and endothelial dysfunction in apolipoprotein E/angiotensin II type 1A receptor double-knockout miceSven Wassmann
Klinik fur Innere Medizin III, Universitatsklinikum des Saarlandes, Homburg Saar, Germany
Circulation 110:3062-7. 2004..Angiotensin II type 1 (AT1) receptor activation is potentially involved in the multifactorial pathogenesis of atherosclerosis...
Addition of paclitaxel to contrast media prevents restenosis after coronary stent implantationBruno Scheller
Internal Medicine III Cardiology Angiology, University of Saarland, Homburg Saar, Germany
J Am Coll Cardiol 42:1415-20. 2003..The present study was designed to test the efficacy of paclitaxel added to the contrast agent iopromide in the prevention of restenosis...
CD34-/CD133+/VEGFR-2+ endothelial progenitor cell subpopulation with potent vasoregenerative capacitiesErik B Friedrich
Department for Internal Medicine III, University Hospital of the Saarland, Germany
Circ Res 98:e20-5. 2006..We identified a new CD34-/133+ EPC subpopulation, which is apparently a precursor of "classical" CD34+/133+ EPC, and functionally more potent than these with respect to homing and vascular repair...
17Beta-estradiol inhibits monocyte adhesion via down-regulation of Rac1 GTPaseErik B Friedrich
Department for Internal Medicine III, University Hospital of the Saarland, 66421 Homburg/Saar, Germany
J Mol Cell Cardiol 40:87-95. 2006..These studies extend current knowledge about the mechanisms responsible for the vascular recruitment of pro-inflammatory cells, and potentially open up new avenues for the therapy of atherosclerosis...
Beneficial effects of immediate stenting after thrombolysis in acute myocardial infarctionBruno Scheller
Innere Medizin III, Universitat des Saarlandes, Homburg Saar, Germany
J Am Coll Cardiol 42:634-41. 2003..The Southwest German Interventional Study in Acute Myocardial Infarction (SIAM III) investigated potentially beneficial effects of immediate stenting after thrombolysis as opposed to a more conservative treatment regimen...
Angiotensin II type 1 receptor antagonism improves hypercholesterolemia-associated endothelial dysfunctionSven Wassmann
Medizinische Klinik und Poliklinik, Innere Medizin III, Universitatskliniken des Saarlandes, Homburg Saar, Germany
Arterioscler Thromb Vasc Biol 22:1208-12. 2002..Hypercholesterolemia-induced angiotensin II type 1 (AT1) receptor overexpression is thought to be a key event in the development of endothelial dysfunction...
AT1 receptor antagonism improves endothelial dysfunction in postmenopausal womenKerstin Wassmann
, , Homburg/Saar, Germany
Maturitas 53:176-83. 2006..AT1 receptor antagonism improves vascular function in postmenopausal women without HRT. Thus, AT1 receptor blockade may resemble an efficient approach for the prevention of vascular dysfunction in estrogen-deficient women...
Pathophysiological regulation of the AT1-receptor and implications for vascular diseaseSven Wassmann
Medizinische Klinik und Poliklinik II, Universitatsklinikum Bonn, Bonn, Germany
J Hypertens Suppl 24:S15-21. 2006..Numerous studies have demonstrated that activation of the angiotensin II type 1 (AT1) receptor plays an important role in the pathogenesis of cardiovascular diseases...
Effect of intensive versus moderate lipid lowering on endothelial function and vascular responsiveness to angiotensin II in stable coronary artery diseasePim van der Harst
Department of Cardiology, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
Am J Cardiol 96:1361-4. 2005..05). Endothelium improvement was accompanied by decreased vascular response to angiotensin II (p = 0.039). These findings suggest a mechanism for the clinical benefit of intensive lipid-lowering treatment in coronary heart disease...
Interleukin-6 induces oxidative stress and endothelial dysfunction by overexpression of the angiotensin II type 1 receptorSven Wassmann
Medizinische Klinik und Poliklinik, Innere Medizin III, Universitatskliniken des Saarlandes, D 66421 Homburg Saar, Germany
Circ Res 94:534-41. 2004..This interaction of the proinflammatory cytokine IL-6 with the renin-angiotensin system may represent an important pathogenetic mechanism in the atherosclerotic process...
From fat fighter to risk factor: the zigzag trek of leptinNikos Werner
Arterioscler Thromb Vasc Biol 24:7-9. 2004
Differential antiplatelet effects of angiotensin converting enzyme inhibitors: comparison of ex vivo platelet aggregation in cardiovascular patients with ramipril, captopril and enalaprilDirk Skowasch
Department of Internal Medicine II, Cardiology, Heart Center University of Bonn, Sigmund Freud Str 25, 53105 Bonn, Germany
Clin Res Cardiol 95:212-6. 2006....
Physical training increases endothelial progenitor cells, inhibits neointima formation, and enhances angiogenesisUlrich Laufs
Medizinische Klinik und Poliklinik der Universität des Saarlandes, Innere Medizin III, Homburg, Germany
Circulation 109:220-6. 2004..Bone marrow-derived endothelial progenitor cells (EPCs) are thought to exert beneficial effects on atherosclerosis, angiogenesis, and vascular repair...
Rapid immunomodulation by rosuvastatin in patients with acute coronary syndromeAndreas Link
Klinik fur Innere Medizin III, Universitatsklinikum des Saarlandes, D 66421Homburg Saar, Germany
Eur Heart J 27:2945-55. 2006..It is unclear how rapidly the beneficial effects of statins occur in patients with ACS and whether these drug properties are related to lipid lowering...
Progesterone antagonizes the vasoprotective effect of estrogen on antioxidant enzyme expression and functionKerstin Wassmann
Klinik fur Innere Medizin III, Universitatsklinikum des Saarlandes, D 66421 Homburg Saar, Germany
Circ Res 97:1046-54. 2005..These findings may in part explain why hormone replacement therapy with estrogen plus progesterone displayed no beneficial effect on cardiovascular event rates in the prospective clinical trials...
Improvement of endothelial function by systemic transfusion of vascular progenitor cellsSven Wassmann
Medizinische Klinik und Poliklinik II, Universitatsklinikum Bonn, Sigmund Freud Str 25, D 53105 Bonn, Germany
Circ Res 99:e74-83. 2006..More than 1 subpopulation of the MNC fraction seems to be involved in this effect...
Clinical evidence for the cardiovascular benefits of angiotensin receptor blockersGeorg Nickenig
University of Saarland, Homburg, Germany
J Renin Angiotensin Aldosterone Syst 7:S1-7. 2006..Ongoing trials are aiming to define the place of such agents in lessening morbidity and mortality from CVD...
Modulation of oxidant and antioxidant enzyme expression and function in vascular cellsSven Wassmann
, , Homburg/Saar, Germany
Hypertension 44:381-6. 2004..This review focuses on the modulation of expression and activity of major antioxidant and oxidant enzymes expressed in vascular cells...
Raloxifene improves endothelial dysfunction in hypertension by reduced oxidative stress and enhanced nitric oxide productionSven Wassmann
Medizinische Klinik und Poliklinik, Innere Medizin III, , Homburg/Saar, Germany
Circulation 105:2083-91. 2002..These vascular effects cause a profound blood pressure reduction and lead to decreased vascular damage in male spontaneously hypertensive rats...
Cellular antioxidant effects of atorvastatin in vitro and in vivoSven Wassmann
Medizinische Klinik und Poliklinik-Innere Medizin III, , Homburg/Saar, Germany
Arterioscler Thromb Vasc Biol 22:300-5. 2002..These effects of atorvastatin may contribute to the vasoprotective effects of statins...
[Acute coronary syndrome--better risk stratification by determination of inflammatory parameters?]Andreas Link
Innere Medizin III Kardiologie Angiologie, Universitatskliniken des Saarlandes, Homburg Saar
Med Klin (Munich) 97:63-9. 2002....
Impact of HMG CoA reductase inhibition on small GTPases in the heartUlrich Laufs
Medizinische Klinik und Poliklinik der Universität des Saarlandes, Innere Medizin III, 66421 Homburg Saar, Germany
Cardiovasc Res 53:911-20. 2002..Therefore, it was tested if these drugs inhibit Rac1 and RhoA activity in cardiomyocytes and, thereby, prevent angiotensin II-mediated expression of atrial natriuretic factor (ANF) and myosin light chain (MLC)-2 in the heart...
Interrelationship of free oxygen radicals and endothelial dysfunction--modulation by statinsSven Wassmann
Medizinische Klinik und Poliklinik-Innere Medizin III, Universitatskliniken des Saarlandes, Homburg/Saar, Germany
Endothelium 10:23-33. 2003....
Rosuvastatin, a new HMG-CoA reductase inhibitor, upregulates endothelial nitric oxide synthase and protects from ischemic stroke in miceUlrich Laufs
, Innere Medizin III, 66421 Homburg, Germany
Brain Res 942:23-30. 2002..The effects are independent of changes in cholesterol levels and are equivalent or even superior to the protective effects by simvastatin and atorvastatin in this animal model...
Redox-sensitive vascular smooth muscle cell proliferation is mediated by GKLF and Id3 in vitro and in vivoGeorg Nickenig
Universitatskliniken des Saarlandes, Medizinische Klinik und Poliklinik, Innere Medizin III, 66424 Homburg Saar, Germany
FASEB J 16:1077-86. 2002..These findings reveal novel mechanisms of redox-controlled cellular proliferation involving GKLF and Id3 that may have general implications for our understanding of vascular and nonvascular growth control...
The AT(1)-type angiotensin receptor in oxidative stress and atherogenesis: part I: oxidative stress and atherogenesisGeorg Nickenig
Klinik und Poliklinik Innere Medizin III, , Homburg/Saar, Germany
Circulation 105:393-6. 2002
Bone marrow-derived progenitor cells modulate vascular reendothelialization and neointimal formation: effect of 3-hydroxy-3-methylglutaryl coenzyme a reductase inhibitionNikos Werner
Medizinische Klinik und Poliklinik, Innere Medizin III, , Homburg/Saar, Germany
Arterioscler Thromb Vasc Biol 22:1567-72. 2002..These findings may help to establish novel pathophysiological concepts and therapeutic strategies in the treatment of various cardiovascular diseases...
The AT(1)-type angiotensin receptor in oxidative stress and atherogenesis: Part II: AT(1) receptor regulationGeorg Nickenig
Klinik und Poliklinik Innere Medizin III, , Homburg/Saar, Germany
Circulation 105:530-6. 2002
Rapid effect of 3-hydroxy-3-methylglutaryl coenzyme a reductase inhibition on coronary endothelial functionSven Wassmann
Medizinische Klinik und Poliklinik, Innere Medizin III, , D-66421 Homburg/Saar, Germany
Circ Res 93:e98-103. 2003..Statin treatment improves endothelium-dependent coronary vasomotion within 24 hours in the absence of significant cholesterol reduction. The full text of this article is available online at http://www.circresaha.org...
Oxygen free radical release in human failing myocardium is associated with increased activity of rac1-GTPase and represents a target for statin treatmentChristoph Maack
, , Homburg/Saar, Germany
Circulation 108:1567-74. 2003..Oral statin treatment inhibits myocardial rac1-GTPase activity. These data suggest that extrahepatic effects of statins can be observed in humans and may be beneficial for patients with chronic heart failure...
Modulation of antioxidant enzyme expression and function by estrogenKerstin Strehlow
Medizinische Klinik und Poliklinik, Innere Medizin III, , Homburg/Saar, Germany
Circ Res 93:170-7. 2003..Estrogen acts antioxidative at least to some extent via stimulation of MnSOD and ecSOD expression and activity, which may contribute to its vasoprotective effects...
Withdrawal of statin treatment abrogates stroke protection in miceKaren Gertz
, Charit, , Berlin, Germany
Stroke 34:551-7. 2003..In patients with acute or impending stroke, withdrawal of statins may impair outcome...
One-year results of the SCORPIUS study: a German multicenter investigation on the effectiveness of sirolimus-eluting stents in diabetic patientsDietrich Baumgart
Department of Cardiology, West German Heart Center, University Clinic Essen, University Duisburg Essen, Essen, Germany
J Am Coll Cardiol 50:1627-34. 2007..Previously, this had been analyzed only in substudies of larger trials or in clinical investigations enrolling a small number of patients...
Endothelial progenitor cells in health and atherosclerotic diseaseNikos Werner
Medizinische Klinik und Poliklinik II, Universitatsklinikum Bonn, Bonn, Germany
Ann Med 39:82-90. 2007..We discuss new insights into vascular stem cell biology derived from experimental and clinical studies...
Circulating endothelial progenitor cells correlate with erectile function in patients with coronary heart diseaseMagnus Baumhakel
Klinik fur Innere Medizin III, Kardiologie, Angiologie und Internistische Intensivmedizin, Universitatsklinikum des Saarlandes, D 66421 Homburg Saar, Germany
Eur Heart J 27:2184-8. 2006..The aim of the study was to determine the influence of endothelial progenitor cells (EPC) on erectile dysfunction (ED). EPC play a major role in repair mechanisms of the endothelial monolayer, but the role of EPC in ED is unclear...
Multidrug resistance protein-1 affects oxidative stress, endothelial dysfunction, and atherogenesis via leukotriene C4 exportCornelius F H Mueller
Medizinische Klinik und Poliklinik II, Universitatsklinikum Bonn, Sigmund Freud Str 25, 53105 Bonn, Germany
Circulation 117:2912-8. 2008..To test this hypothesis, we investigated the effects of MRP1 inhibition and LTC(4) receptor blockade (Cys-LT1 receptor) in vitro and in vivo...
Is the degeneration of aortic valve bioprostheses similar to that of native aortic valves? Insights into valvular pathologyDirk Skowasch
University of Bonn, Department of Internal Medicine II Cardiology, Sigmund Freud Str 25, D 53105 Bonn, Germany
Expert Rev Med Devices 3:453-62. 2006..Recent studies suggest a similar valvular pathology, that underlies both types of valvular degeneration, but also an even more important role of inflammatory and repair processes in the case of BP degeneration...
Essential role of bone marrow fibroblast growth factor-2 in the effect of estradiol on reendothelialization and endothelial progenitor cell mobilizationVincent Fontaine
INSERM U589, Institut L Bugnard, Centre Hospitalier Universitaire Rangueil, Toulouse Cedex, France
Am J Pathol 169:1855-62. 2006..In conclusion, FGF2, specifically medullary FGF2, is necessary and sufficient to mediate the accelerative effect of E2 on both reendothelialization and EPC mobilization...
Angiotensin II: one driving force behind atherogenesisCornelius F H Mueller
Medizinische Klinik und Poliklinik II, , Sigmund Freud Str. 25, 53105 Bonn, Germany
Hypertension 51:175-6. 2008
Tracking of systemically administered mononuclear cells in the ischemic brain by high-field magnetic resonance imagingAlbrecht Stroh
Department of Radiology, Charite Universitaetsmedizin Berlin, Schumannstrasse 20 21, 10117 Berlin, Germany
Neuroimage 33:886-97. 2006..Taken together, our results demonstrate that brain engraftment of systemically administered mononuclear cells can be visualized non-invasively over time and space using high-resolution MRI...
Regulation of antioxidant and oxidant enzymes in vascular cells and implications for vascular diseaseSven Wassmann
Medizinische Klinik II, Universitatsklinikum Bonn, Sigmund Freud Str 25, D 53105 Bonn, Germany
Curr Hypertens Rep 8:69-78. 2006..Identification of key enzymes and mechanisms of vascular oxidative stress is important for the development of novel, specific pharmacologic interventions...
Down-regulation of Rac-1 GTPase by EstrogenUlrich Laufs
Medizinische Klinik und Poliklinik, Innere Medizin III, Universitatskliniken des Saarlandes, 66421 Homburg Saar, Germany
J Biol Chem 278:5956-62. 2003..Rac1 GTPase gene-transcription and activity is regulated by 17 beta-estradiol, which may be an important molecular mechanism contributing to the cardiovascular effects of estrogens...
Identification of a novel redox-sensitive gene, Id3, which mediates angiotensin II-induced cell growthCornelius Mueller
Klinik und Poliklinik Innere Medizin III, , Homburg, Germany
Circulation 105:2423-8. 2002..Id3 governs the downstream mitogenic processing via depression of p21(WAF1/Cip1), p27(Kip1), and p53. These findings reveal a novel redox-sensitive pathway involved in growth control...
Estrogen increases bone marrow-derived endothelial progenitor cell production and diminishes neointima formationKerstin Strehlow
Klinik und Poliklinik Innere Medizin III, , 66421 Homburg/Saar, Germany
Circulation 107:3059-65. 2003..CONCLUSIONS: Estrogens increase numbers of EPCs by antiapoptotic effects leading to accelerated vascular repair and decreased neointima formation...
Intravenous transfusion of endothelial progenitor cells reduces neointima formation after vascular injuryNikos Werner
Klinik und Poliklinik, Innere Medizin III, , 66421 Homburg/Saar, Germany
Circ Res 93:e17-24. 2003..The full text of this article is available online at http://www.circresaha.org...
Mechanisms of stroke protection by physical activityMatthias Endres
Klinik und Poliklinik fur Neurologie, Charite, Humboldt Universitat zu Berlin, Schumannstrasse 20 21, D 10117 Berlin, Germany
Ann Neurol 54:582-90. 2003..Our results suggest that physical activity not only decreases stroke risk, but also provides a prophylactic treatment strategy for increasing blood flow and reducing brain injury during cerebral ischemia...
Vascular response to angiotensin II predicts long-term prognosis in patients undergoing coronary artery bypass graftingPim van der Harst
Department of Cardiology, University Hospital Groningen, The Netherlands
Hypertension 44:930-4. 2004..In conclusion, these results suggest that in patients undergoing CABG, a diminished vascular responsiveness of the thoracic artery to exogenous angiotensin II is related to an increased risk of future cardiovascular events...
The role of the AUUUUA hexamer for the posttranscriptional regulation of the AT1 receptor mRNA stabilityAnja Berger
Klinik und Poliklinik, Innere Medizin III, Universitat des Saarlandes, 66421 Homburg, Saarland, Germany
Biochem Biophys Res Commun 330:805-12. 2005..These findings indicate that the AUUUUA hexamer is essential for the posttranscriptional modulation of the AT1 receptor mRNA expression...
In vitro differentiation characteristics of cultured human mononuclear cells-implications for endothelial progenitor cell biologyKatrin Walenta
Innere Medizin III, Kardiologie, Angiologie und Internistische Intensivmedizin, , 66421 Homburg/Saar, Germany
Biochem Biophys Res Commun 333:476-82. 2005..Careful surface marker analysis might be necessary when using in vitro EPC differentiation systems...
Running exercise of different duration and intensity: effect on endothelial progenitor cells in healthy subjectsUlrich Laufs
Medizinische Klinik und Poliklinik der Universität des Saarlandes, Innere Medizin III, 66421 Homburg, Germany
Eur J Cardiovasc Prev Rehabil 12:407-14. 2005..Exercise is a central component of the primary prevention of vascular diseases. The effect of physical activity on circulating EPC in healthy individuals is not known...
Circulating CD31+/annexin V+ apoptotic microparticles correlate with coronary endothelial function in patients with coronary artery diseaseNikos Werner
Klinik fur Innere Medizin II, Universitatsklinikum Bonn, Bonn, Germany
Arterioscler Thromb Vasc Biol 26:112-6. 2006..Endothelial dysfunction predicts morbidity and mortality in patients at cardiovascular risk. Endothelial function may be decisively influenced by the degree of endothelial cell apoptosis...
Influence of cardiovascular risk factors on endothelial progenitor cells: limitations for therapy?Nikos Werner
Medizinischen Klinik und Poliklinik II, Universitatsklinikum Bonn, Germany
Arterioscler Thromb Vasc Biol 26:257-66. 2006....
Pleiotropic effects of HMG-CoA reductase inhibitorsNikos Werner
Medizinische Klinik und Poliklinik, Innere Medizin III, , Homburg/Saar, Germany
Basic Res Cardiol 97:105-16. 2002..These pleiotropic properties of statins may have important clinical implications in addition to lowering serum cholesterol...
