Histoenzymatic characterization of sub-types of Type I fibres in fast muscles of rats

Khan M.A. (1978) Histoenzymatic characterization of sub-types of Type I fibres in fast muscles of rats. Histochemistry, 55 2: 129-138. doi:10.1007/BF00493515


Author Khan M.A.
Title Histoenzymatic characterization of sub-types of Type I fibres in fast muscles of rats
Journal name Histochemistry   Check publisher's open access policy
ISSN 0301-5564
Publication date 1978
Sub-type Article (original research)
DOI 10.1007/BF00493515
Volume 55
Issue 2
Start page 129
End page 138
Total pages 10
Publisher Springer-Verlag
Subject 2702 Anatomy
Abstract The histochemical activities of succinic dehydrogenase (SDH), myofibrillar Adenosine triphosphatase (ATPase) and alpha glycerophosphate dehydrogenase were studied in serial sections of rat vastus lateralis (red) (RVL), gastrocnemius and diaphragm muscles. Three main fibre-types were distinguished. The "Type I" fibres of RVL and gastrocnemius muscles fell into two distinct groups: one category-"Type IA" showed very low ATPase activity. The second category of "Type IB" fibres displayed moderate ATPase reaction. The "Type IA" fibres were divisible into two sub-groups when tested for SDH reaction. "Type IA1" fibres possessed a homogenous distribution of diformazan·granules throughout the fibre: "Type IA2" fibres displayed characteristic "moth-eaten" pattern of diformazan localization. The diaphragm muscle did not show either "Type IB" or "Type IA2" varieties. The great majority of Type I fibres were sub-type IA1 in the three fast muscles studied. It is also demonstrated here that an inherent heterogeneity exists between Type I fibres of diaphragm and leg muscles in regard to α-GPD localization. This histochemical data emphasizes the fact that subdivision of Type I striated muscle fibres of mammalian animals into two sub-types is only approximate and that a further subcategorization is possible.
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Unknown

Document type: Journal Article
Sub-type: Article (original research)
Collection: Scopus Import
 
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