Effect of Endotoxin on Plasma Catechol Amines and Serum Serotonin.

Abstract
Five minutes after the intravenous administration of an Escherichia coli cell suspension, the mean values for plasma epinephrine and norepinephrine were 28.29 and 27.34 [mu]g/L respectively. Serum serotonin was 0.11 [mu]g/ml. Control values were 1.21 and 2.19 [mu]g/L and 0.55 [mu]g/ml respectively. Subsequently the catechol amines returned to control levels but the serum serotonin remained low. At death the concentration for plasma epinephrine and norepinephrine was 186.30 and 48.66 jxg/L and 0.32 [mu]g/ml for serum serotonin.

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