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ABSTRACT: Article highlights
Intramyocellular lipid content (IMCL) can be elevated in insulin-resistant humans, but its dynamics and association with comorbidities remain unclear. Independently of age, sex, body mass, and skeletal muscle volume, IMCL is higher in recent-onset type 2, but not type 1 diabetes, and remains unchanged within 5 years, despite worsening insulin resistance. A degree of physical fitness modulates the association between IMCL and insulin sensitivity in type 2 diabetes. Whereas higher IMCL associates with lower insulin sensitivity in people with lower physical fitness, there is no association between IMCL and insulin sensitivity in those with higher degree of physical fitness. IMCL associates with progression of microalbuminuria, cardiovascular disease risk, and cardiac autonomic neuropathy.
SUBMITTER: Schon M
PROVIDER: S-EPMC10545555 | biostudies-literature | 2023 Oct
REPOSITORIES: biostudies-literature
Schön Martin M Zaharia Oana P OP Strassburger Klaus K Kupriyanova Yuliya Y Bódis Kálmán K Heilmann Geronimo G Strom Alexander A Bönhof Gidon J GJ Michelotti Filippo F Yurchenko Iryna I Möser Clara C Huttasch Maximilian M Bombrich Maria M Kelm Malte M Burkart Volker V Schrauwen-Hinderling Vera B VB Wagner Robert R Roden Michael M
Diabetes 20231001 10
Intramyocellular lipid content (IMCL) is elevated in insulin-resistant humans, but it changes over time, and relationships with comorbidities remain unclear. We examined IMCL during the initial course of diabetes and its associations with complications. Participants of the German Diabetes Study (GDS) with recent-onset type 1 (n = 132) or type 2 diabetes (n = 139) and glucose-tolerant control subjects (n = 128) underwent 1H-MRS to measure IMCL and muscle volume, whole-body insulin sensitivity (hy ...[more]