The Role of Thyroid Hormone on Soleus and Edl Muscles of Female and Male Rats 1138

D’Anella, Pascal; Nonaka, Keico Okino; berle, L. M.C. K; Salvini, Tania F.

doi:10.1097/00005768-199705001-01136

Medicine &amp Science in Sports &amp Exercise

1997

DOI: 10.1097/00005768-199705001-01136

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The Role of Thyroid Hormone on Soleus and Edl Muscles of Female and Male Rats 1138

Pascal D’Anella

Keico Okino Nonaka

L. M.C. K berle

et al.

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1999

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“…It is known that the skeletal muscle is a tissue that presents plasticity (Tardieu et al, 1977; Williams and Goldspink, 1978; Brown et al, 1981) and shows adaptation to many stimuli, such as exercise (Wernig et al, 1990, 1991), hormonal alterations (Winder et al, 1980; Ianuzzo et al, 1980; Danella, 1998), electrical stimulation (Pette and Vrbová, 1992), and functional alterations (Irintchev et al, 1990; Ansved, 1995) among others.…”

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Effect of single and periodic contusion on the ratsoleus muscle at different stages of regeneration

1999

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This work analyzed the rat soleus muscle after single and recurrent contusions at different stages of regeneration. A noninvasive contusion was produced by a type of drop-mass equipment. The posterior region of the right hind limb received a trauma and both right and left soleus muscles were analyzed 1, 4, and 6 days after a single contusion (1x), and 6 and 30 days after periodic contusions (10x, one trauma per week for 10 weeks). Single contusion: there was no significant difference between right and left soleus muscle weight. All animals showed abundant signs of acute damage in the right soleus. AChE activity was identified in regeneration segments of the right soleus. Periodic contusions: there was an increase in the right soleus muscle weight (alpha = 5%) only in the animals evaluated 6 days after periodic contusions. The right soleus muscle showed a high incidence of chronic signs of damage, such as split fibers and a centralized nucleus, which predominated when compared with the acute signs. Right soleus muscles showed split fibers with AChE activity in both the proximal and middle regions. There was no difference in the incidence of muscle fiber types (I, II, and IIC) between right and left soleus muscles after periodic contusions. Skeletal muscle contusion is common in humans, especially in sport activities, where repetitive traumas are also frequent. The results of this work indicate that despite the regeneration process there is an important change in the morphological aspect of regenerated muscle fibers, which possibly affect muscle performance.

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confidence: 99%

Effect of single and periodic contusion on the ratsoleus muscle at different stages of regeneration

1999

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The Role of Thyroid Hormone on Soleus and Edl Muscles of Female and Male Rats 1138

Cited by 1 publication

References 0 publications

Effect of single and periodic contusion on the ratsoleus muscle at different stages of regeneration

Effect of single and periodic contusion on the ratsoleus muscle at different stages of regeneration

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