Effects of prolonged fasting on AMPK signaling, gene expression, and mitochondrial respiratory chain content in skeletal muscle from lean and obese individuals

MA Wijngaarden, GC van der Zon… - American Journal …, 2013 - journals.physiology.org
Obesity in humans is often associated with metabolic inflexibility, but the underlying
molecular mechanisms remain incompletely understood. The aim of the present study was …

Acute effects of a single moderate-intensity exercise bout performed in fast or fed states on cell metabolism and signaling: comparison between lean and obese rats

ÉL Vogt, MC Von Dentz, DS Rocha, JFA Model… - Life Sciences, 2023 - Elsevier
Aims Although the benefits of exercise can be potentiated by fasting in healthy subjects, few
studies evaluated the effects of this intervention on the metabolism of obese subjects. This …

Regulation of skeletal muscle energy/nutrient-sensing pathways during metabolic adaptation to fasting in healthy humans

MA Wijngaarden, LEH Bakker… - American Journal …, 2014 - journals.physiology.org
During fasting, rapid metabolic adaptations are required to maintain energy homeostasis.
This occurs by a coordinated regulation of energy/nutrient-sensing pathways leading to …

Obesity impairs skeletal muscle AMPK signaling during exercise: role of AMPKα2 in the regulation of exercise capacity in vivo

RS Lee-Young, JE Ayala, PT Fueger… - International journal of …, 2011 - nature.com
Objective: Skeletal muscle AMP-activated protein kinase (AMPK) α2 activity is impaired in
obese, insulin-resistant individuals during exercise. We determined whether this defect …

AMPK regulation of fatty acid metabolism and mitochondrial biogenesis: implications for obesity

HM O'Neill, GP Holloway, GR Steinberg - Molecular and cellular …, 2013 - Elsevier
Skeletal muscle plays an important role in regulating whole-body energy expenditure given
it is a major site for glucose and lipid oxidation. Obesity and type 2 diabetes are causally …

Metabolic adaptations to fasting and chronic caloric restriction in heart, muscle, and liver do not include changes in AMPK activity

AA Gonzalez, R Kumar, JD Mulligan… - American Journal …, 2004 - journals.physiology.org
Activation of adenosine monophosphate-activated protein kinase (AMPK) plays a central
role in allowing cells to adapt to nutrient deprivation in vitro. This link between AMPK activity …

Genetic and metabolic effects on skeletal muscle AMPK in young and older twins

B Mortensen, P Poulsen, L Wegner… - American Journal …, 2009 - journals.physiology.org
The protein complex AMP-activated protein kinase (AMPK) is believed to play an important
role in the regulation of skeletal muscle glucose and lipid metabolism. Defects in the AMPK …

AMPK activity and isoform protein expression are similar in muscle of obese subjects with and without type 2 diabetes

K Højlund, KJ Mustard, P Stæhr… - American Journal …, 2004 - journals.physiology.org
Acute or chronic activation of AMP-activated protein kinase (AMPK) increases insulin
sensitivity. Conversely, reduced expression and/or function of AMPK might play a role in …

[PDF][PDF] AMPK and exercise: glucose uptake and insulin sensitivity

HM O'neill - Diabetes & metabolism journal, 2013 - synapse.koreamed.org
AMPK is an evolutionary conserved sensor of cellular energy status that is activated during
exercise. Pharmacological activation of AMPK promotes glucose uptake, fatty acid oxidation …

Effect of dietary macronutrient composition on AMPK and SIRT1 expression and activity in human skeletal muscle

B Draznin, C Wang, R Adochio… - Hormone and …, 2012 - thieme-connect.com
Adenosine monophosphate-activated protein kinase (AMPK), silent mating type information
regulation 2 homologue 1 (SIRT 1), and peroxisome proliferator-activated receptor γ co …