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  • Title: Twitch and tetanic contraction of lamprey muscle exposed to fatty acid at different temperatures.
    Author: Kössler F, Nasledov GA.
    Journal: Biomed Biochim Acta; 1989; 48(5-6):S542-7. PubMed ID: 2757628.
    Abstract:
    The effect of Na-octanoate (NaC8) on the development of twitch and tetanic tension of a striated muscle (m. longitudinalis linguae) of Lampetra fluviatilis was tested at different temperatures. The muscle exhibited posttetanic potentiation as well as cold potentiation similar to other poikilotherme animals. The sensitivity to NaC8 was higher than that of striated frog or rat muscles but similar to that of mammalian smooth or cardiac muscle preparations. A decrease of temperature remarkably reduced the effect of NaC8 on the tension development. Also the fatigue of muscles during tetanic stimulation was smaller if the temperature was lower. It seems that both the process of fatigue and the action of NaC8 are delayed by the cold.
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