Research Topics
| G NickenigSummaryAffiliation: Saarland University Country: Germany Publications
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Detail Information
Publications
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
Acute effects of ACE inhibition on coronary endothelial dysfunctionG Nickenig
Universitat des Saarlandes, Homburg, 66421, Germany
J Renin Angiotensin Aldosterone Syst 1:361-4. 2000....
Destabilization of AT(1) receptor mRNA by calreticulinGeorg Nickenig
Klinik und Poliklinik Innere Medizin III, Universitat des Saarlandes, Homburg, Germany
Circ Res 90:53-8. 2002..These findings display a novel mechanism of posttranscriptional mRNA processing...
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 II: AT(1) receptor regulationGeorg Nickenig
Klinik und Poliklinik Innere Medizin III, , Homburg/Saar, Germany
Circulation 105:530-6. 2002
Central role of the AT(1)-receptor in atherosclerosisG Nickenig
Medizinische Klinik und Poliklinik Innere Medizin III, Universitat des Saarlandes, Homburg Saar, Germany
J Hum Hypertens 16:S26-33. 2002....
Endothelial dysfunction and oxidative stress during estrogen deficiency in spontaneously hypertensive ratsS Wassmann
Medizinische Klinik und Poliklinik, Innere Medizin III, , Homburg/Saar, Germany
Circulation 103:435-41. 2001..Therefore, estrogen deficiency-induced AT(1) receptor overexpression and oxidative stress may play an important role in cardiovascular diseases associated with menopause...
Inhibition of geranylgeranylation reduces angiotensin II-mediated free radical production in vascular smooth muscle cells: involvement of angiotensin AT1 receptor expression and Rac1 GTPaseS Wassmann
Medizinische Klinik und Poliklinik, Innere Medizin III, , Homburg/Saar, Germany
Mol Pharmacol 59:646-54. 2001....
HMG-CoA reductase inhibitors improve endothelial dysfunction in normocholesterolemic hypertension via reduced production of reactive oxygen speciesS Wassmann
Medizinische Klinik und Poliklinik, Innere Medizin III, , Hamburg/Saar, Germany
Hypertension 37:1450-7. 2001....
Suppression of endothelial nitric oxide production after withdrawal of statin treatment is mediated by negative feedback regulation of rho GTPase gene transcriptionU Laufs
Medizinische Klinik und Poliklink, Universitatskliniken des Saarlandes, Homburg, Germany
Circulation 102:3104-10. 2000..Withdrawal of statin treatment could suppress endothelial NO production and may impair vascular function...
Beneficial effects of statins in patients with non-ischemic heart failureU Laufs
Klinik und Poliklinik Innere Medizin III, Universitat des Saarlandes, 66424 Homburg, Germany
Z Kardiol 93:103-8. 2004..HMG CoA reductase inhibitors (statins) may exert a wide array of cholesterol independent effects including antihypertrophic effects on the heart. Their role in the treatment of heart failure has not been studied...
[Vascular progenitor cells and atherogenesis. Regression and regeneration using bone marrow?]N Werner
Innere Medizin III (Kardiologie/Angiologie,
Dtsch Med Wochenschr 129:1269-75. 2004
Prospective crossover comparison of carvedilol and metoprolol in patients with chronic heart failureC Maack
Medizinische Klinik und Poliklinik, Innere Medizin III, Universitatskliniken des Saarlandes, Homburg, Germany
J Am Coll Cardiol 38:939-46. 2001..This study investigates the effects of a change of beta-adrenergic blocking agent treatment from metoprolol to carvedilol and vice versa in patients with heart failure (HF)...
Does statin therapy influence steroid hormone synthesis?M Bohm
Klinik fur Innere Medizin III, Universitatskliniken des Saarlandes, Kirrberger Strasse, 66421 Homburg, Germany
Z Kardiol 93:43-8. 2004..There was no compensatory change in FSH or LH. It is concluded that pravastatin does not alter steroid hormones or gonadotropins in a clinically applicable dose, which significantly reduces total and LDL cholesterol...
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...
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
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...
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...
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...
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...
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...
Role of integrin-linked kinase in vascular smooth muscle cells: regulation by statins and angiotensin IIErik B Friedrich
Klinik für Innere Medizin III Kardiologie, Angiologie, Internistische Intensivmedizin, Universitatskliniken des Saarlandes, 66421 Homburg Saar, Germany
Biochem Biophys Res Commun 349:883-9. 2006..These data identify ILK as a novel target in VSMC for anti-atherosclerotic therapy...
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...
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...
Differential phosphorylation of calreticulin affects AT1 receptor mRNA stability in VSMCCornelius F H Mueller
Medizinische Klinik und Poliklinik II, Innere Medizin, Universitatsklinikum Bonn, Sigmund Freud Strasse 25, 53105 Bonn, Germany
Biochem Biophys Res Commun 370:669-74. 2008..These findings imply an important role of serine dephosphorylation and tyrosine phosphorylation on calreticulin mediated AT1 receptor mRNA stability...
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...
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...
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...
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...
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....
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...
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...
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...
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...
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...
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...
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...
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...
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...
Induction of p53 by GKLF is essential for inhibition of proliferation of vascular smooth muscle cellsSven Wassmann
Medizinische Klinik und Poliklinik II, Universitatsklinikum Bonn, Sigmund Freud Str 25, D 53105 Bonn, Germany
J Mol Cell Cardiol 43:301-7. 2007..The transcription factor GKLF induces inhibition of proliferation of VSMC which is mechanistically linked to a GKLF-induced enhancement of the expression of the tumor suppressor gene p53...
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
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...
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...
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...
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...
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...
From fat fighter to risk factor: the zigzag trek of leptinNikos Werner
Arterioscler Thromb Vasc Biol 24:7-9. 2004
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...
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...
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...
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...
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...
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...
