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Type: Artigo de periódico
Title: Histochemical Study Of Enzyme In Frontal Muscle Of Norfolk Rabbit (oryctolagus Cuniculus) [estudio Histoquímico De La Enzima Nadh-tr En Músculo Frontal De Conejos Norfolk (oryctolagus Cuniculus)]
Author: Hebling A.
Esquisatto M.A.M.
De Lima Castro H.A.
Abstract: The human frontal muscles has two bellies, forming, together with the occipital muscle and the aponeurotic galea, the occipitofrontal muscle. Being a striated skeletal muscle, the frontal muscle can show muscular fibers with high intensity oxidation (type I) and with low intensity oxidation (type II). A histochemical process using organic and inorganic chemical reactions allows us to obtain a product that is visible through optical microscopy. The purpose of this paper is to determine, by means of the histochemical process of the Nicotinamide Adenine Dinucleotide Tetra-zolium Reductase (NADH-TR) reaction the distribution of the number of the type I and II frontal muscle fibers of female, six to eight months old, 2.8 to 3.1 Kg English Norfolk rabbits. In 1010 fibers studied, we found 33.8% type I, 17.4% type IIA and 48.8% type IIB. The majority of fibers were type II, demonstrating this muscle's intense activity during facial mimicking. Type II fibers showed a reduced oxidative intensity, which made them subject to muscular fatigue. These findings may be of help in the study to understanding the pathological process that may occur in this muscle. © 2006 Sociedad Chilena de Anatomía.
Rights: aberto
Identifier DOI: 
Date Issue: 2006
Appears in Collections:Unicamp - Artigos e Outros Documentos

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