Key result
Low-frequency stimulation of rabbit fast-twitch muscle for 60 days induced a 140-fold elevation in cardiac-like alpha myosin heavy chain mRNA.
Population
Rabbit skeletal muscles (masseter, soleus, and fast-twitch muscles including tibialis anterior)
Comparison
Low-frequency stimulation for periods exceeding… vs Unstimulated baseline levels
Design
Preclinical
Follow-up
Up to 60 days
Authors
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No immediate clinical implications; extends basic understanding of activity-dependent myosin isoform switching in animal muscle.
Effect estimate: 140-fold elevation
Demonstrates the wide distribution of cardiac-like alpha MHC mRNA in skeletal muscle and its marked induction during fast-to-slow transition induced by low-frequency stimulation.
Peuker et al. (1995) studied Rabbit skeletal muscle. Low-frequency stimulation vs. Unstimulated muscle was evaluated on alpha MHC mRNA levels (140-fold elevation). Low-frequency stimulation of rabbit fast-twitch muscle for 60 days induced a 140-fold elevation in cardiac-like alpha myosin heavy chain mRNA.
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