Letter | Published:

Molecular 'Rejuvenation' of Muscle Tissue

Nature volume 141, pages 10971098 (18 June 1938) | Download Citation

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Abstract

THE decomposition of creatine phosphoric acid during muscular action, and its rebuilding during rest, has been the subject of numerous detailed investigations. We were interested in the problem, if, and to what extent, creatine phosphoric acid molecules are decomposed and afterwards rebuilt, or ‘rejuvenated’, in the resting muscle. This problem can be easily solved by injecting labelled sodium phosphate, for example, into frogs, and determining if, and to what extent, creatine phosphoric acid extracted from the muscle of the frog becomes labelled (radioactive). Phosphorus atoms present in creatine phosphoric acid and other organic compounds do not exchange spontaneously with other phosphorus atoms present, and thus the fact that labelled creatine phosphoric acid can be isolated from the muscle is a proof that this was synthesized after the administration of labelled sodium phosphate.

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References

  1. 1.

    , Biochem. Z., 194, 306 (1928).

  2. 2.

    , and , Bull. Lab. Carlsberg, 22, 188 (1938).

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Affiliations

  1. Institute of Theoretical Physics and Zoophysiological Laboratory, Copenhagen. May 17.

    • G. HEVESY
    •  & O. REBBE

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https://doi.org/10.1038/1411097b0

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