Effects of denervation and direct electrical stimulation upon the post-hatching differentiation of posterior latissimus dorsi muscle in chicken.
The influences of denervation and of direct electrical stimulation of denervated muscle upon the post-hatching differentiation of fibre types in the fast avian muscle posterior latissimus dorsi have been investigated. Denervation inhibits the normal decrease in number of muscle fibres exhibiting acid-stable myofibrillar ATPase activity and leads to weak oxidative activity in all the fibres. Direct stimulation at a low rhythm of denervated muscle induces the normal decrease of fibres exhibiting acid-stable myofibrillar ATPase but does not allow the occurrence of normal oxidative activity pattern. The results emphasize the role of muscular activity upon the differentiation of fibre types in a developing muscle.
A
A
Khaskiye
D
D
Renaud
G H
GH
Le Douarin
D000251:Adenosine Triphosphatases / Q000378:metabolism; D000818:Animals; D000831:Animals, Newborn / Q000254:growth & development; D002454:Cell Differentiation; D002645:Chickens; D004558:Electric Stimulation; D009121:Muscle Denervation; D009132:Muscles / Q000166:cytology* / Q000201:enzymology / Q000502:physiology; D013194:Staining and Labeling
D000251:Adenosine Triphosphatases