About the Authors

Lyubov Chaykovska

Affiliations Charité - Universitätsmedizin Berlin, Center for Cardiovascular Research, Institute for Pharmacology and Toxicology, Berlin, Germany, Institute of Nutritional Science, University of Potsdam, Potsdam-Nuthetal, Germany

Karoline von Websky

Affiliations Charité - Universitätsmedizin Berlin, Center for Cardiovascular Research, Institute for Pharmacology and Toxicology, Berlin, Germany, Institute of Nutritional Science, University of Potsdam, Potsdam-Nuthetal, Germany

Jan Rahnenführer

Affiliations Charité - Universitätsmedizin Berlin, Center for Cardiovascular Research, Institute for Pharmacology and Toxicology, Berlin, Germany, Institute of Nutritional Science, University of Potsdam, Potsdam-Nuthetal, Germany

Markus Alter

Affiliations Charité - Universitätsmedizin Berlin, Center for Cardiovascular Research, Institute for Pharmacology and Toxicology, Berlin, Germany, Institute of Nutritional Science, University of Potsdam, Potsdam-Nuthetal, Germany, Charité - Universitätsmedizin Berlin, Medizinische Klinik für Endokrinologie und Nephrologie, Berlin, Germany

Susi Heiden

Affiliations Charité - Universitätsmedizin Berlin, Center for Cardiovascular Research, Institute for Pharmacology and Toxicology, Berlin, Germany, Institute of Nutritional Science, University of Potsdam, Potsdam-Nuthetal, Germany

Holger Fuchs

Affiliation Boehringer Ingelheim Pharma GmbH & Co. KG, Biberach an der Riss, Germany

Frank Runge

Affiliation Boehringer Ingelheim Pharma GmbH & Co. KG, Biberach an der Riss, Germany

Thomas Klein

Affiliation Boehringer Ingelheim Pharma GmbH & Co. KG, Biberach an der Riss, Germany

Berthold Hocher

hocher@uni-potsdam.de

Affiliations Charité - Universitätsmedizin Berlin, Center for Cardiovascular Research, Institute for Pharmacology and Toxicology, Berlin, Germany, Institute of Nutritional Science, University of Potsdam, Potsdam-Nuthetal, Germany

Competing Interests

The authors have read the journal's policy and have the following conflicts: This study was supported by Boehringer Ingelheim Pharma GmbH & Co. KG, Biberach an der Riss, Germany, who played a role in study design, data collection and analysis, decision to publish and preparation of the manuscript. Boehringer Ingelheim Pharma GmbH financially supported the study. Holger Fuchs, Frank Runge, and Thomas Klein are research staff of Boehringer Ingelheim Pharma GmbH & Co. Boehringer Ingelheim Pharma GmbH holds the patent of linagliptin (patent number: WO 2004/018468) and developed this compound. This does not alter the authors′ adherence to all the PLoS ONE policies on sharing data and materials, as detailed online in the guide for authors.

Author Contributions

Conceived and designed the experiments: TK BH. Performed the experiments: LC KVW JR MA SH HF FR. Analyzed the data: LC TK BH. Contributed reagents/materials/analysis tools: LC KVW JR MA SH HF FR. Wrote the paper: LC TK BH.