Muscle fiber branching — difference between grafts in old and young rats

Large numbers of branched muscle fibers occur in the freely grafted rat extensor digitorum longus muscle. The ratio of branched/non-branched muscle fibers in grafts is much higher in old (24 months) than in young (4 months) host rats. Cross-age transplants show that the proportion of branched muscle...

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Veröffentlicht in:Mechanisms of ageing and development 1991-09, Vol.60 (1), p.43-53
Hauptverfasser: Blaivas, Michael, Carlson, Bruce M.
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description Large numbers of branched muscle fibers occur in the freely grafted rat extensor digitorum longus muscle. The ratio of branched/non-branched muscle fibers in grafts is much higher in old (24 months) than in young (4 months) host rats. Cross-age transplants show that the proportion of branched muscle fibers is related to the age of the grafted muscle and not to the age of the host. This is in contrast to mass and maximum isometric tension, in which the age of the host, rather than the age of the grafted muscle, is the determinant of the success of the muscle graft.
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subjects Aging
Aging - pathology
Aging - physiology
Animals
Biological and medical sciences
Cell physiology
Fundamental and applied biological sciences. Psychology
Male
Microscopy, Electron, Scanning
Molecular and cellular biology
Muscle fiber branching
Muscle grafts
Muscles - anatomy & histology
Muscles - physiology
Muscles - transplantation
Rats
Rats, Inbred F344
Regeneration
Skeletal muscle
title Muscle fiber branching — difference between grafts in old and young rats
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