Insulin resistance after a 3-day fast is associated with an increased capacity of skeletal muscle to oxidize lipids

SJ Blackwood, O Horwath, M Moberg… - American Journal …, 2023 - journals.physiology.org
There is a debate on whether lipid-mediated insulin resistance derives from an increased or
decreased capacity of muscle to oxidize fats. Here, we examine the involvement of muscle …

Enhanced skeletal muscle lipid oxidative efficiency in insulin-resistant vs insulin-sensitive nondiabetic, nonobese humans

JE Galgani, K Vasquez, G Watkins… - The Journal of …, 2013 - academic.oup.com
Context: Skeletal muscle insulin resistance is proposed to result from impaired skeletal
muscle lipid oxidative capacity. However, there is no evidence indicating that muscle lipid …

Excess lipid availability increases mitochondrial fatty acid oxidative capacity in muscle: evidence against a role for reduced fatty acid oxidation in lipid-induced insulin …

N Turner, CR Bruce, SM Beale, KL Hoehn, T So… - Diabetes, 2007 - Am Diabetes Assoc
A reduced capacity for mitochondrial fatty acid oxidation in skeletal muscle has been
proposed as a major factor leading to the accumulation of intramuscular lipids and their …

Diet-induced muscle insulin resistance in rats is ameliorated by acute dietary lipid withdrawal or a single bout of exercise: parallel relationship between insulin …

ND Oakes, KS Bell, SM Furler, S Camilleri, AK Saha… - Diabetes, 1997 - Am Diabetes Assoc
Chronic high-fat feeding in rats induces profound whole-body insulin resistance, mainly due
to effects in oxidative skeletal muscle. The mechanisms of this reaction remain unclear, but …

Skeletal muscle triglyceride: marker or mediator of obesity-induced insulin resistance in type 2 diabetes mellitus?

BH Goodpaster, DE Kelley - Current diabetes reports, 2002 - Springer
The inability of insulin to stimulate glucose metabolism in skeletal muscle is a classic
characteristic of type 2 diabetes, but this insulin resistance entails altered patterns of lipid …

Insulin resistance after a 72-h fast is associated with impaired AS160 phosphorylation and accumulation of lipid and glycogen in human skeletal muscle

MH Vendelbo, BFF Clasen… - American Journal …, 2012 - journals.physiology.org
During fasting, human skeletal muscle depends on lipid oxidation for its energy substrate
metabolism. This is associated with the development of insulin resistance and a subsequent …

Effects of acute lipid overload on skeletal muscle insulin resistance, metabolic flexibility, and mitochondrial performance

JJ Dubé, PM Coen, G DiStefano… - American Journal …, 2014 - journals.physiology.org
We hypothesized that acute lipid-induced insulin resistance would be attenuated in high-
oxidative muscle of lean trained (LT) endurance athletes due to their enhanced metabolic …

Relationships between muscle membrane lipids, fiber type, and enzyme activities in sedentary and exercised rats

AD Kriketos, DA Pan, JR Sutton… - American Journal …, 1995 - journals.physiology.org
Insulin resistance in skeletal muscle is associated with 1) relative increases in the proportion
of glycolytic and fast-twitch muscle fibers and decreases in the proportion of more oxidative …

Skeletal Muscle Mitochondria in Insulin Resistance: Differences in Intermyofibrillar Versus Subsarcolemmal Subpopulations and Relationship to Metabolic Flexibility

P Chomentowski, PM Coen, Z Radikova… - The Journal of …, 2011 - academic.oup.com
abstract Context: Insulin resistance is accompanied by lower lipid oxidation during fasting
and metabolic inflexibility. Whether these abnormalities correlate with mitochondrial content …

Muscle insulin resistance: a case of fat overconsumption, not mitochondrial dysfunction

EW Kraegen, GJ Cooney… - Proceedings of the …, 2008 - National Acad Sciences
Insulin resistance—an impairment in the ability of insulin to appropriately regulate glucose
and lipid metabolism—is an early and key defect associated with weight gain (obesity), type …