Sofiya Gancheva, Daria Caspari, Alessandra Bierwagen, Tomas Jelenik, Sonia Caprio, Nicola Santoro, Maik Rothe, Daniel F Markgraf, Diran Herebian, Jong-Hee Hwang, Soner Öner-Sieben, Jasmin Mennenga, Giovanni Pacini, Eva Thimm, Andrea Schlune, Thomas Meissner, Stephan Vom Dahl, Dirk Klee, Ertan Mayatepek, Michael Roden, Regina Ensenauer
BACKGROUND: Classical organic acidemias (OAs) result from defective mitochondrial catabolism of branched-chain amino acids (BCAAs). Abnormal mitochondrial function relates to oxidative stress, ectopic lipids and insulin resistance (IR). We investigated whether genetically impaired function of mitochondrial BCAA catabolism associates with cardiometabolic risk factors, altered liver and muscle energy metabolism, and IR. PATIENTS AND METHODS: In this case-control study, 31 children and young adults with propionic acidemia (PA), methylmalonic acidemia (MMA) or isovaleric acidemia (IVA) were compared with 30 healthy young humans using comprehensive metabolic phenotyping including in vivo 31 P/1 H magnetic resonance spectroscopy of liver and skeletal muscle...
March 2, 2020: Journal of Inherited Metabolic Disease