What question did this study set out to answer?

Determine the metabolic enzyme adaptations in rabbit fast-twitch muscle subjected to long-term electrical pacing.

April 24, 1989FEBS Letters

Chronic long‐term electrostimulation creates a unique metabolic enzyme profile in rabbit fast‐twitch muscle

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Authors

DHDavid A. HoodYork University DPDirk PetteUniversity of Konstanz

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Implication

Animal experimental study reveals chronic electrostimulation induces a unique metabolic profile in rabbit fast-twitch muscle, indicating adaptation beyond typical slow-twitch fiber conversion.

Key Points

Determine the metabolic enzyme adaptations in rabbit fast-twitch muscle subjected to long-term electrical pacing.
Applied chronic, low-frequency electrical stimulation to the fast-twitch tibialis anterior muscle of rabbits for durations up to 120 days.
Tracked the temporal activity changes of glycolytic and oxidative enzymes, including lactate dehydrogenase (LDH) isozymes and citrate synthase.
Enzyme activity modifications followed a first-order-like time course, reaching a steady state after 50 days of continuous stimulation.
Glycolytic enzyme activities dropped to 30%–40% of baseline values yet remained 2- to 3-fold higher than in cardiac or soleus muscle, while LDH isozymes shifted to a slow-twitch pattern.
Citrate synthase activity increased 3.7-fold, ultimately reaching a level 45% above that of cardiac muscle.

Cite This Study

Hood et al. (1989) studied this question.

synapsesocial.com/papers/6a131cbb498151d905de6304 https://doi.org/10.1016/0014-5793(89)81393-6

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Implication

Animal experimental study reveals chronic electrostimulation induces a unique metabolic profile in rabbit fast-twitch muscle, indicating adaptation beyond typical slow-twitch fiber conversion.

Chronic long‐term electrostimulation creates a unique metabolic enzyme profile in rabbit fast‐twitch muscle

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Member takes

Implication

Key Points

Cite This Study

Chronic long‐term electrostimulation creates a unique metabolic enzyme profile in rabbit fast‐twitch muscle

Discussion

Member takes

Implication

Key Points

Cite This Study

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