Regulation of autophagy in human skeletal muscle: effects of exercise, exercise training and insulin stimulation

AM Fritzen, AB Madsen, M Kleinert… - The Journal of …, 2016 - Wiley Online Library
Key points Regulation of autophagy in human muscle in many aspects differs from the majority
of previous reports based on studies in cell systems and rodent muscle. An acute bout of …

[HTML][HTML] Contraction-stimulated glucose transport in muscle is controlled by AMPK and mechanical stress but not sarcoplasmatic reticulum Ca2+ release

TE Jensen, L Sylow, AJ Rose, AB Madsen, Y Angin… - Molecular …, 2014 - Elsevier
Understanding how muscle contraction orchestrates insulin-independent muscle glucose
transport may enable development of hyperglycemia-treating drugs. The prevailing concept …

[HTML][HTML] Chemical genetic screen identifies Gapex-5/GAPVD1 and STBD1 as novel AMPK substrates

…, S Seitz, C Collodet, AB Madsen, TE Jensen, B Viollet… - Cellular signalling, 2019 - Elsevier
AMP-activated protein kinase (AMPK) is a key regulator of cellular energy homeostasis, acting
as a sensor of energy and nutrient status. As such, AMPK is considered a promising drug …

[HTML][HTML] The ULK1/2 and AMPK inhibitor SBI-0206965 blocks AICAR and insulin-stimulated glucose transport

JR Knudsen, AB Madsen, KW Persson… - International Journal of …, 2020 - mdpi.com
The small molecule kinase inhibitor SBI-0206965 was originally described as a specific inhibitor
of ULK1/2. More recently, it was reported to effectively inhibit AMPK and several studies …

β-Actin shows limited mobility and is required only for supraphysiological insulin-stimulated glucose transport in young adult soleus muscle

AB Madsen, JR Knudsen… - American Journal …, 2018 - journals.physiology.org
Studies in skeletal muscle cell cultures suggest that the cortical actin cytoskeleton is a major
requirement for insulin-stimulated glucose transport, implicating the β-actin isoform, which in …

Insulin‐stimulated glucose uptake partly relies on p21‐activated kinase (PAK) 2, but not PAK1, in mouse skeletal muscle

…, R Kjøbsted, GA Joseph, AB Madsen… - The Journal of …, 2020 - Wiley Online Library
Key points Muscle‐specific genetic ablation of p21‐activated kinase (PAK)2, but not whole‐body
PAK1 knockout, impairs glucose tolerance in mice. Insulin‐stimulated glucose uptake …

Gene deletion of γ‐actin impairs insulin‐stimulated skeletal muscle glucose uptake in growing mice but not in mature adult mice

JR Knudsen, AB Madsen, Z Li… - Physiological …, 2022 - Wiley Online Library
The cortical cytoskeleton, consisting of the cytoplasmic actin isoforms β and/or γ‐actin, has
been implicated in insulin‐stimulated GLUT4 translocation and glucose uptake in muscle and …

Chemical denervation using botulinum toxin increases Akt expression and reduces submaximal insulin-stimulated glucose transport in mouse muscle

…, C Henriquez-Olguin, JR Knudsen, J Li, AB Madsen… - Cellular …, 2019 - Elsevier
Botulinum toxin A (botox) is a toxin used for spasticity treatment and cosmetic purposes.
Botox blocks the excitation of skeletal muscle fibers by preventing the release of acetylcholine …

Low‐and high‐protein diets do not alter ex vivo insulin action in skeletal muscle

…, JR Knudsen, O Søgaard, AB Madsen… - Physiological …, 2018 - Wiley Online Library
A low‐protein high carbohydrate ( LPHC ) diet and a high‐protein low carbohydrate ( HPLC
) diet have been reported to positively and negatively regulate whole‐body glucose …

Insulin-stimulated glucose uptake partly relies on p21-activated kinase (PAK)-2, but not PAK1, in mouse skeletal muscle

…, M Jaurji, R Kjøbsted, GA Joseph, AB Madsen… - bioRxiv, 2019 - biorxiv.org
Objective Skeletal muscle glucose uptake is essential for maintaining whole-body glucose
homeostasis and accounts for the majority of glucose disposal in response to insulin. The …