Sympathin


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Sympathin

 

an obsolete general name for a biologically active substance similar in structure to adrenaline. In vertebrates (including man), sympathins are secreted when impulses are transmitted from sympathetic nerves (hence the name) to the organ that performs a particular function. In early research on humoral regulation the sympathetic mediators of nervous excitation were called sympathins. Later it was established that the properties of a mediator are exhibited in the peripheral sections of the sympathetic nervous system by norepinephrine and in the central sections of dopamine. In amphibians sympathins have been identified as adrenaline.

References in periodicals archive ?
A quantitative study of the production of sympathin.