sympathinn.
/ˈsɪmpəθɪn/ Physiology.
A hormone which acts as a mediator of nerve impulses at sympathetic nerve synapses; now effectively a disused synonym of noradrenaline n.
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the world > life > biology > biological processes > action of nervous system > [noun] > reception or transmission of impulses > transmitters
rectifier1895
transmitter1930
sympathin1931
noradrenaline1932
neurohumour1933
substance P1934
norepinephrine1937
neurohormone1939
neurosecretion1956
neurophysin1958
vasoactive intestinal (poly)peptide1958
neurotransmitter1961
VIP1972
neuropeptide1973
1931 Cannon & Bacq. in Amer. Jrnl. Physiol. XCVI. 411 Because the substance is derived from structures under sympathetic control, when they are influenced by sympathetic impulses, we suggest that it be called sympathin.
1938 Nature 12 Feb. 266/2 The authors reject Bacq's rather factious criticisms of their theory of sympathins E and I.
1946 Nature 20 July 88/1 In Cannon's remaining active years he was largely concerned with evidence as to the nature of the sympathetic transmitter ‘sympathin’, which he believed to be not identical with adrenaline.
1971 Nature 2 Apr. 340/2 In an attempt to demonstrate this increase the transmitter ‘sympathin’ liberated from sympathetic nerve to the spleen was examined.
This entry has not yet been fully updated (first published 1986; most recently modified version published online June 2018).
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n.1931