@article{JazbutyteStumpnerRedeletal.2012, author = {Jazbutyte, Virginija and Stumpner, Jan and Redel, Andreas and Lorenzen, Johan M. and Roewer, Norbert and Thum, Thomas and Kehl, Franz}, title = {Aromatase Inhibition Attenuates Desflurane-Induced Preconditioning against Acute Myocardial Infarction in Male Mouse Heart In Vivo}, series = {PLoS One}, volume = {7}, journal = {PLoS One}, number = {8}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-151258}, pages = {e42032}, year = {2012}, abstract = {The volatile anesthetic desflurane (DES) effectively reduces cardiac infarct size following experimental ischemia/reperfusion injury in the mouse heart. We hypothesized that endogenous estrogens play a role as mediators of desflurane-induced preconditioning against myocardial infarction. In this study, we tested the hypothesis that desflurane effects local estrogen synthesis by modulating enzyme aromatase expression and activity in the mouse heart. Aromatase metabolizes testosterone to 17b- estradiol (E2) and thereby significantly contributes to local estrogen synthesis. We tested aromatase effects in acute myocardial infarction model in male mice. The animals were randomized and subjected to four groups which were pre-treated with the selective aromatase inhibitor anastrozole (A group) and DES alone (DES group) or in combination (A+DES group) for 15 minutes prior to surgical intervention whereas the control group received 0.9\% NaCl (CON group). All animals were subjected to 45 minutes ischemia following 180 minutes reperfusion. Anastrozole blocked DES induced preconditioning and increased infarct size compared to DES alone (37.94615.5\% vs. 17.163.62\%) without affecting area at risk and systemic hemodynamic parameters following ischemia/reperfusion. Protein localization studies revealed that aromatase was abundant in the murine cardiovascular system with the highest expression levels in endothelial and smooth muscle cells. Desflurane application at pharmacological concentrations efficiently upregulated aromatase expression in vivo and in vitro. We conclude that desflurane efficiently regulates aromatase expression and activity which might lead to increased local estrogen synthesis and thus preserve cellular integrity and reduce cardiac damage in an acute myocardial infarction model.}, language = {en} } @article{PruggerHeidrichWellmannetal.2012, author = {Prugger, Christof and Heidrich, Jan and Wellmann, J{\"u}rgen and Dittrich, Ralf and Brand, Stefan-Martin and Telgmann, Ralph and Breithardt, G{\"u}nter and Reinecke, Holger and Scheld, Hans and Kleine-Katth{\"o}fer, Peter and Heuschmann, Peter U. and Keil, Ulrich}, title = {Trends in Cardiovascular Risk Factors Among Patients With Coronary Heart Disease : Results From the EUROASPIRE I, II, and III Surveys in the M{\"u}nster Region}, series = {Deutsches {\"A}rzteblatt International}, volume = {109}, journal = {Deutsches {\"A}rzteblatt International}, number = {17}, doi = {10.3238/arztebl.2012.0303}, pages = {303-U21}, year = {2012}, abstract = {Background: Target values for cardiovascular risk factors in patients with coronary heart disease (CHD) are stated in guidelines for the prevention of cardiovascular disease. We studied secular trends in risk factors over a 12-year period among CHD patients in the region of Munster, Germany. Methods: The cross-sectional EUROASPIRE I, II and III surveys were performed in multiple centers across Europe. For all three, the Munster region was the participating German region. In the three periods 1995/96, 1999/2000, and 2006/07, the surveys included (respectively) 392, 402 and 457 <= 70-year-old patients with CHD in Munster who had sustained a coronary event at least 6 months earlier. Results: The prevalence of smoking remained unchanged, with 16.8\% in EUROASPIRE I and II and 18.4\% in EUROASPIRE III (p=0.898). On the other hand, high blood pressure and high cholesterol both became less common across the three EUROASPIRE studies (60.7\% to 69.4\% to 55.3\%, and 94.3\% to 83.4\% to 48.1\%, respectively; p<0.001 for both). Obesity became more common (23.0\% to 30.6\% to 43.1\%, p<0.001), as did treatment with antihypertensive and lipid-lowering drugs (80.4\% to 88.6\% to 94.3\%, and 35.0\% to 67.4\% to 87.0\%, respectively; p<0.001 for both). Conclusion: The observed trends in cardiovascular risk factors under-score the vital need for better preventive strategies in patients with CHD.}, language = {en} }