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Degree of correspondence between contractile and oxidative capacities in horse muscle fibre, a histochemical study

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dc.contributor.authorLópez-Rivero, J.L.es
dc.contributor.authorAgüera, E.es
dc.contributor.authorRodríguez Barbudo, M. V.
dc.contributor.authorGalisteo, A. M.
dc.contributor.authorMorales-López, J. L.
dc.date.accessioned2011-02-01T08:44:20Z
dc.date.available2011-02-01T08:44:20Z
dc.date.issued1990
dc.description.abstractSamples 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.es
dc.formatapplication/pdfes
dc.format.extent5es
dc.identifier.issn0213-3911es
dc.identifier.urihttp://hdl.handle.net/10201/18145
dc.languageenges
dc.publisherMurcia : F. Hernándezes
dc.relation.ispartofHistology and histopathologyes
dc.rightsinfo:eu-repo/semantics/openAccesses
dc.subjectMuscle fibre typeses
dc.subjectHistochemistryes
dc.subject.otherCDU::6 - Ciencias aplicadas::61 - Medicinaes
dc.titleDegree of correspondence between contractile and oxidative capacities in horse muscle fibre, a histochemical studyes
dc.typeinfo:eu-repo/semantics/articlees
dspace.entity.typePublicationes
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Histology and histopathology Vol. 5, nº 1 (1990)