publication . Article . 1998

Contrôle hormonal des caractéristiques des fibres musculaires après la naissance

Open Access French
  • Published: 06 Dec 1998
  • Country: France
During postnatal development, the growth of skeletal muscle and the diversification of muscle fibre types are regulated by genetic, nutritional and endocrine factors. Herein, the crucial role played by several hormones will be reviewed with regard to their influence on fibre distribution and on myosin expression. Somatotropic hormones (GH and IGF-I) do not affect fibre composition but appear to regulate myosin isoform expression. Thyroid hormone increases the proportion of fast compared to slow fibres and the expression of fast myosin. Insulin influences fibre properties since a decrease in the fast IIB fibre percentage and a decrease in fast native isomyosins c...
free text keywords: Sciences agricoles, Agricultural sciences, différenciation cellulaire, insuline, catécholamine, récepteur hormonal, somatotrophine, œstrogène, myosine, hormone thyroidienne, glucocorticoïde, viande bovine, fibre musculaire, croissance, androgène, tendrete
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