Key result
CaMKII inhibition during ex vivo contraction of fast-twitch rat skeletal muscle resulted in greater fatigue and blunted phosphorylation of trisk95.
Population
Fast-twitch rat skeletal muscle (gastrocnemius muscle)
Comparison
Muscle contractions in situ and ex vivo, with… vs Resting contralateral muscles
Design
Preclinical
Authors
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Highlights CaMKII's protective role against fatigue in fast-twitch fibers; leaves open translation to human exercise or cardiac muscle.
CaMKII activation is rapid and sustained during skeletal muscle contraction and may signal through trisk95 to modulate Ca2+ release.
Rose et al. (2007) studied Muscle contraction and fatigue in rat skeletal muscle. CaMKII inhibition vs. Uninhibited/control muscle was evaluated on CaMKII activity, phosphorylation, and muscle fatigue. CaMKII inhibition during ex vivo contraction of fast-twitch rat skeletal muscle resulted in greater fatigue and blunted phosphorylation of trisk95.