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PMID: 1082027 Published · ppublish English Journal Article Research Support, U.S. Gov't, P.H.S.

Calcium content and exchange in frog skeletal muscle.

The Journal of physiology ·Vol. 253 ·No. 1 ·1975-12-00 ·Pages 37-52

Kirby AC, Lindley BD, Picken JR

Abstract

Calcium content and exchange in frog ELD IV muscle were examined employing the efflux technique. 2. Muscle calcium was found to exchange with four time constants, 21-5 sec 2-7, 32 and 1244 min. 3. All calcium was found to be exchangeable with more than half the total amount residing in an extracellular compartment. 4. Results obtained from ELD IV muscles and single fibres were identical. 5. Muscle calcium content was found to remain constant up to 20 hr in vitro. 6. Extra exchange of calcium occurs upon contraction. This extra exchange appears to occur in the most slowly exchanging component. 7. The data are discussed in relation to morphological and autoradiographic findings and a model of calcium exchange in skeletal muscle is presented.

MeSH Terms

Animals Anura Calcium/metabolism In Vitro Techniques Models, Biological Muscle Contraction Muscles/metabolism Rana pipiens Time Factors

Chemicals

Calcium

Authors & Affiliations

3 authors, click to expand affiliations / ORCID

Kirby A C

Lindley B D

Picken J R

References (14)

14 references, click to expand

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Article Info

Journal

The Journal of physiology

Abbr.

J Physiol

ISSN

0022-3751

DOI

10.1113/jphysiol.1975.sp011178

Published

1975-12-00

Pages

37-52

Language

English

Region

England

NLM ID

0266262

PMCID

PMC1348531

Subset

External Links

PubMed source DOI: 10.1113/jphysiol.1975.sp011178 PMC Full Text View journal details

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