1. Institute of Pharmacy, Faculty of Biosciences, Pharmacy, and Psychology, University of Leipzig, Brüderstrasse 34, D-04103 Leipzig, Germany, Institute of Biochemistry, Faculty of Biosciences, Pharmacy, and Psychology, University of Leipzig, Talstrasse 33, D-04103 Leipzig, Germany, and Department of Internal Medicine III, University of Leipzig, Philipp-Rosenthal-Strasse 29, D-04103 Leipzig, Germany