Direct synaptic contacts of catecholamine axons on the preganglionic sympathetic neurons in the rat thoracic spinal cord.
Preganglionic sympathetic neurons were labelled by retrograde transport of horseradish peroxidase, while catecholamine axon varicosities were marked by the uptake of 5-hydroxydopamine in the intermediolateral nucleus of the rat. The direct synaptic contacts from the catecholamine axons to the preganglionic sympathetic neurons were demonstrated. Catecholamine axons formed symmetric synapses.
D000320:Adrenergic Fibers / Q000502:physiology / Q000648:ultrastructure*; D000818:Animals; D001369:Axons / Q000145:classification* / Q000648:ultrastructure; D002395:Catecholamines / Q000032:analysis* / Q000502:physiology; D005727:Ganglia, Spinal / Q000166:cytology* / Q000648:ultrastructure; D006892:Hydroxydopamines; D008297:Male; D008854:Microscopy, Electron; D051381:Rats; D011919:Rats, Inbred Strains; D013569:Synapses / Q000145:classification* / Q000648:ultrastructure
D002395:Catecholamines; D006892:Hydroxydopamines