Catriona A. Syme1, Greg D. Wells1,2, Garry Detzler1, Hai-Ling Margaret Cheng1,2, Mike D. Noseworthy3,4, Timo Schirmer5, Brian W. McCrindle, 2,6, Jill Hamilton, 27
1Physiology & Experimental Medicine, The Hospital for Sick Children, Toronto, ON, Canada; 2University of Toronto, Toronto, ON, Canada; 3Electrical and Computer Engineering, McMaster University, Hamilton, ON, Canada; 4Brain-Body Institute, St. Joseph's Healthcare, Hamilton, ON, Canada; 5Applied Science Laboratory, GE Healthcare, Munich, Germany; 6Cardiology, The Hospital for Sick Children, Toronto, ON, Canada; 7Endocrinology, The Hospital for Sick Children, Toronto, ON, Canada
In overweight youth, pancreatic and hepatic fat (PF and HF) were estimated from in- and out-of-phase MRI, and associations with metabolic parameters were assessed. Both showed positive correlations with triglycerides and insulin resistance and secretion. HF did not correlate with liver enzymes, suggesting its early accumulation may influence glucose metabolism before elevation of hepatic transaminases. Lack of associations between intra-abdominal fat or body mass index z-score and these metabolic parameters highlight the importance of fat distribution rather than fat quantity alone. The current study reveals the potential to index simultaneously ectopic fat in two organs important for glucose and lipid metabolism.