Fibre typing using sarcoplasmic reticulum Ca2+-ATPase and myoglobin immunohistochemistry in rat gastrocnemius muscle

T. Krenács, E. Molnár, E. Dobó, L. Dux

Research output: Contribution to journalArticle

21 Citations (Scopus)

Abstract

Skeletal muscle fibre types were identified by using immunohistochemical detection of sarcoplasmic reticulum Ca2+-ATPase and myolobin content in rat gastrocnemius muscle. The strong Ca2+-ATPase-reactive fibres were identical with the fast-twitch population, while the fibres with weak reactivity represented the slow-twitch type. Strong myoglobin immunoreactivity reflected the fast oxidative glycolytic (FOG) and slow oxidative (SO) types. Slight to moderate myoglobin immunostaining was found in the fast glycolytie (FG) fibres. The staining intensity of the different fibre types differed as follows: for Ca2+-ATPase FG>FOG>SO, and for myoglobin FOG>SO>FG. The immunoreactivity of Ca2+-ATPase and myoglobin were well preserved after fixation of the muscles in Bouin's solution, or in formol/acetic acid fixative, and paraffin embedding. Detection of the primary antibodies was carried out by using the avidin-biotin-peroxidase complex, and the immunogold-silver-staining methods. The latter was found to be more sensitive and suitable for postembedding ultrastructural demonstration of the Ca2+-pump enzyme on Durcupan-embedded muscles. The method, using 5 nm immunogold conjugate with silver enhancement, offered the advantages of high sensitivity and excellent visualization of the reaction product. The postembedding detection of sarcoplasmic reticulum Ca2+-ATPase also proved to be useful in the restrospective identification of the main fibre classes in human muscle biopses.

Original languageEnglish
Pages (from-to)145-155
Number of pages11
JournalThe Histochemical Journal
Volume21
Issue number3
DOIs
Publication statusPublished - Mar 1989

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Calcium-Transporting ATPases
Myoglobin
Sarcoplasmic Reticulum
Skeletal Muscle
Immunohistochemistry
Muscles
Paraffin Embedding
Fixatives
Silver Staining
Avidin
Skeletal Muscle Fibers
Biotin
Silver
Acetic Acid
Formaldehyde
Peroxidase
Staining and Labeling
Antibodies
Enzymes
Population

ASJC Scopus subject areas

  • Anatomy
  • Cell Biology

Cite this

Fibre typing using sarcoplasmic reticulum Ca2+-ATPase and myoglobin immunohistochemistry in rat gastrocnemius muscle. / Krenács, T.; Molnár, E.; Dobó, E.; Dux, L.

In: The Histochemical Journal, Vol. 21, No. 3, 03.1989, p. 145-155.

Research output: Contribution to journalArticle

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