[1] Max Planck Inst Metab Res, Dept Neuronal Control Metab, Gleueler Str 50, D-50931 Cologne, Germany
[2] Univ Hosp Cologne, Ctr Endocrinol Diabet & Prevent Med CEDP, Kerpener Str 26, D-50924 Cologne, Germany
[3] Univ Cologne, Cologne Excellence Cluster Cellular Stress Respon, Cologne, Germany
[4] Univ Cologne, CMMC, Cologne, Germany
[5] Heidelberg Univ, Biochem Ctr, Neuenheimer Feld 328, D-69120 Heidelberg, Germany
[6] Max Planck Inst Biol Ageing, Joseph Stelzmann Str 9B, D-50931 Cologne, Germany
[7] Lipotype GmbH, Tatzberg 47, D-01307 Dresden, Germany
[8] Natl Ctr Diabet Res DZD, Ingolstadter Landstr 1, D-85764 Neuherberg, Germany