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Veränderungen der thermoelastischen Kontraktion von Haut und Nerv bei alternden Tieren

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Summary

The thermo-elastic contraction which has been found to increase with age in the tendons, has been studied in the skin. This shows a contraction between 64–66°C similar to that of tendon fibres. In 22 month old rats, it reaches 5–6 times greater values than in 3 month old animals. The skin also shows a second contraction between 67 and 70°C. After the ninth month, in a continuously increasing degree, a third and fourth step of contraction appear at higher temperatures (up to 82°C).

The sciatic nerve also shows a thermo-elastic contraction after the fourth month at 76–80°C. This increases with age, and, as in the case with the skin, several more steps of contraction appear at higher temperatures, up to 92°C. It is improbable that these thermo-elastic contractions are related to «elastin». The changes with increasing age, however, show a similarity to the age changes of «elastin» in so far as the thermic contractility increases with age.

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References

  1. 1

    F. Verzár undE. Heitz, Exper.11, 230 (1955).

  2. 1

    F. Verzár undE. Heitz, Exper.11, 230 (1955.)

  3. 2

    E. Dodt, Exper.11, 65 (1955).

  4. 1a

    F. Verzár undE. Heitz, Exper.11, 230 (1955).

  5. 2

    E. Dodt, loc. cit.

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Verzár, F. Veränderungen der thermoelastischen Kontraktion von Haut und Nerv bei alternden Tieren. Experientia 11, 230–232 (1955). https://doi.org/10.1007/BF02160472

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