Abstract
Skeletal muscle of guinea pigs is composed of at least three types of fibers which are distinguishable by their kinetic and histochemical properties. Fast twitch muscles may be histochemically red or white; fragmented sarcoplasmic reticulum (FSR) prepared from both types of fast twitch muscles has identical calcium-accumulating capacity (maximal calcium uptake) and calcium-concentrating ability. FSR from slow twitch muscles accumulates less total calcium, but the calcium-concentrating ability is equal to that of fast twitch muscles. The slower rate of calcium accumulation by FSR of slow twitch muscles correlates with a prolonged relaxation time.
Full text
PDF
Selected References
These references are in PubMed. This may not be the complete list of references from this article.
- Barnard R. J., Edgerton V. R., Peter J. B. Effect of exercise on skeletal muscle. I. Biochemical and histochemical properties. J Appl Physiol. 1970 Jun;28(6):762–766. doi: 10.1152/jappl.1970.28.6.762. [DOI] [PubMed] [Google Scholar]
- Carafoli E., Patriarca P., Rossi C. S. A comparative study of the role of mitochondria and the sarcoplasmic reticulum in the uptake and release of Ca++ by the rat diaphragm. J Cell Physiol. 1969 Aug;74(1):17–30. doi: 10.1002/jcp.1040740104. [DOI] [PubMed] [Google Scholar]
- Cooper S. The isometric responses of mammalian muscles. J Physiol. 1930 Jun 27;69(4):377–385. doi: 10.1113/jphysiol.1930.sp002657. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Harigaya S., Ogawa Y., Sugita H. Calcium binding activity of microsomal fraction of rabbit rad muscle. J Biochem. 1968 Mar;63(3):324–331. [PubMed] [Google Scholar]
- PORTZEHL H., CALDWELL P. C., RUEEGG J. C. THE DEPENDENCE OF CONTRACTION AND RELAXATION OF MUSCLE FIBRES FROM THE CRAB MAIA SQUINADO ON THE INTERNAL CONCENTRATION OF FREE CALCIUM IONS. Biochim Biophys Acta. 1964 May 25;79:581–591. doi: 10.1016/0926-6577(64)90224-4. [DOI] [PubMed] [Google Scholar]
- Sreter F. A. Temperature, pH and seasonal dependence of Ca-uptake and ATPase activity of white and red muscle microsomes. Arch Biochem Biophys. 1969 Oct;134(1):25–33. doi: 10.1016/0003-9861(69)90246-x. [DOI] [PubMed] [Google Scholar]
- Sréter F. A., Gergely J. Comparative studies of the MG activated ATPase activity and Ca uptake of fractions of white and red muscle homogenates. Biochem Biophys Res Commun. 1964 Jul 27;16(5):438–443. doi: 10.1016/0006-291x(64)90372-9. [DOI] [PubMed] [Google Scholar]
- Worsfold M., Dunn R. F., Peter J. B. A simplified technique for preparing isolated subcellular particles for electron microscopy. J Lab Clin Med. 1969 Jul;74(1):160–165. [PubMed] [Google Scholar]
- Worsfold M., Peter J. B. Kinetics of calcium transport by fragmented sarcoplasmic reticulum. J Biol Chem. 1970 Nov 10;245(21):5545–5552. [PubMed] [Google Scholar]
- Wu C. S. Comparative studies on myosins from breast and leg muscles of chicken. Biochemistry. 1969 Jan;8(1):39–48. doi: 10.1021/bi00829a007. [DOI] [PubMed] [Google Scholar]