Incorporation of C14-amino acids into protein of isolated diaphragms: effect of epinephrine and norepinephrine

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Abstract
When diaphragms isolated from normal rats were incubated with a C14-amino acid the addition of epinephrine or norepinephrine decreased incorporation of C14 into muscle protein. The inhibition occurred whether epinephrine was added in vitro or administered in vivo. The minimal effective concentration of epinephrine in vitro was 0.1 µg/ml. When the glucose concentration in the medium was raised to 300 mg % or more the epinephrine induced inhibition of amino acid incorporation into muscle protein was no longer observed.

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