Comparative analysis of the transcriptomes of EDL, psoas, and soleus muscles from mice
Background Individual skeletal muscles have evolved to perform specific tasks based on their molecular composition. In general, muscle fibers are characterized as either fast-twitch or slow-twitch based on their myosin heavy chain isoform profiles.
Pabodha Hettige +3 more
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The embryonic genes Dkk3, Hoxd8, Hoxd9 and Tbx1 identify muscle types in a diet-independent and fiber-type unrelated way [PDF]
Background The mouse skeletal muscle is composed of four distinct fiber types that differ in contractile function, number of mitochondria and metabolism. Every muscle type has a specific composition and distribution of the four fiber types. To find novel
Boekschoten, M.V. +21 more
core +1 more source
Cycling Cross-Bridges Contribute to Thin Filament Activation in Human Slow-Twitch Fibers
It has been shown that not only calcium but also strong binding myosin heads contribute to thin filament activation in isometrically contracting animal fast-twitch and cardiac muscle preparations. This behavior has not been studied in human muscle fibers
Alfredo Jesus López-Dávila +9 more
doaj +1 more source
Light Chains from Slow‐Twitch Muscle Myosin. [PDF]
Myosin light chains have been isolated from slow‐twitch soleus muscles of rabbit and cat. Two chemically related light chains of molecular weight about 22000 have been identified from their thiol sequences in each species, and these have been further characterized by amino acid analysis and peptide mapping studies. These light chains are related to the
openaire +2 more sources
Effect of ADP on slow‐twitch muscle fibres of the rat: implications for muscle fatigue [PDF]
Slow‐twitch mechanically skinned fibres from rat soleus muscle were bathed in solutions mimicking the myoplasmic environment but containing different [ADP] (0.1 μm to 1.0 mm). The effect of ADP on sarcoplasmic reticulum (SR) Ca2+‐content was determined from the magnitude of caffeine‐induced force responses, while temporal changes in SR Ca2+‐content ...
Macdonald, William Alexander. +1 more
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Peroxisome proliferator-activated receptor-γ coactivator-1α in muscle links metabolism to inflammation [PDF]
1. In higher eukaryotes, metabolism and immunity are tightly coupled. However, whereas evolutionary, a compromised immune response due to undernourishment has been the predominant problem, the inflammatory response to obesity and other life style ...
Handschin, C., Handschin, C
core +1 more source
Mitochondrial dynamics define muscle fiber type by modulating cellular metabolic pathways
Summary: Skeletal muscle is highly developed after birth, consisting of glycolytic fast-twitch and oxidative slow-twitch fibers; however, the mechanisms of fiber-type-specific differentiation are poorly understood.
Tatsuki Yasuda +3 more
doaj +1 more source
The ratio of fast- and slow-twitch fibers in human skeletal muscle is variable and largely determined by genetic factors. In this study, we investigated the contribution of microRNA (miRNA) in skeletal muscle fiber type composition.
Andrey V. Zhelankin +4 more
doaj +1 more source
The slow sarco/endoplasmic reticulum Ca2+-ATPase declines independently of slow myosin in soleus muscle of diabetic rats [PDF]
The sarcoplasmic reticulum Ca2+-ATPase (SERCA) isoforms are normally expressed in coordination with the corresponding myosin heavy chain (MyHC) isoforms in the fibers of skeletal muscle but this coordination is often disrupted in pathological conditions.
Rácz, Gábor +3 more
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Quantitative analysis of dystrophin in fast‐ and slow‐twitch mammalian skeletal muscle [PDF]
The relative tissue content of dystrophin has been evaluated in the slow‐twitch soleus (primarily type I fibers) and fast‐twitch vastus lateralis (primarily type IIb filbers) muscles of the rat and mouse, as well as in human biopsy samples from the vastus lateralis and gluteus maximus muscles, using a sensitive immunochemical assay.
Ho-Kim, My-Anh, Rogers, Peter A.
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