Por favor, use este identificador para citar o enlazar este ítem:
http://hdl.handle.net/10201/18145
Twittear
Título: | Degree of correspondence between contractile and oxidative capacities in horse muscle fibre, a histochemical study |
Fecha de publicación: | 1990 |
Editorial: | Murcia : F. Hernández |
ISSN: | 0213-3911 |
Materias relacionadas: | CDU::6 - Ciencias aplicadas::61 - Medicina |
Palabras clave: | Muscle fibre types Histochemistry |
Resumen: | Samples taken from the middle gluteal muscle of 95 untrained adult horses of different ages and sex were subjected to histochemical analysis using the myosin adenosine triphosphatase (m-ATPase) and nicotinamide adenine dinucleotide tetrazolium reductase (NADH-TR) staining techniques. Fibres were classified into types 1, IIA and IIB according to m-ATPase activity after preincubation at pH 4.4. The percentage of FT (Fast-Twitch Glycolytic) fibres and the proportion of IIB fibres with «high» and «low» oxidative capacity were determined in serial sections stained for NADH-TR. Statistical analysis revealed a significantly higher proportion of IIR fibres than FT fibres (P < 0.001), though both percentages were correlated. Thus, 72.2 +/- 17.6% of type IIB fibres showed low oxidative capacity , but the remaining 27.8 +/- 17.6% showed high aerobic potential, and thus did not correspond to FT fibres. These results confirm that the contractile capacity of a muscle fibre does not determine its oxidative profile. The different types of muscle fibre should thus be classified solely according to m-ATPase activity, since this characteristic is related to the molecular structure of contractile proteins. Oxidative capacity should be assessed separately, and not be used as a criterion for fibre classification in horses. |
Autor/es principal/es: | López-Rivero, J.L. Agüera, E. Rodríguez Barbudo, M. V. Galisteo, A. M. Morales-López, J. L. |
Forma parte de: | Histology and histopathology |
URI: | http://hdl.handle.net/10201/18145 |
Tipo de documento: | info:eu-repo/semantics/article |
Número páginas / Extensión: | 5 |
Derechos: | info:eu-repo/semantics/openAccess |
Aparece en las colecciones: | Vol. 5, nº 1 (1990) |
Ficheros en este ítem:
Fichero | Descripción | Tamaño | Formato | |
---|---|---|---|---|
Degree of correspondence between contractile and oxidative capacities in horse muscle fibre a histochemical study.pdf | 361,87 kB | Adobe PDF | Visualizar/Abrir |
Los ítems de Digitum están protegidos por copyright, con todos los derechos reservados, a menos que se indique lo contrario.