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SYNAPTIC ARRANGEMENTS FORMED BY SEROTONIN‐IMMUNOREACTIVE AXONS IN THE SUBSTANTIA GELATINOSA OF THE RAT SPINAL CORD
Author(s) -
Maxwell D. J.,
Léránth Cs.,
Verhofstad A. A. J.
Publication year - 1985
Publication title -
quarterly journal of experimental physiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.925
H-Index - 101
eISSN - 1469-445X
pISSN - 0144-8757
DOI - 10.1113/expphysiol.1985.sp002923
Subject(s) - spinal cord , serotonin , neuroscience , substantia nigra , anatomy , chemistry , biology , dopamine , biochemistry , receptor , dopaminergic
Ultrastructural properties of serotonin‐immunoreactive axons in the rat's substantia gelatinosa were examined in order to determine the synaptic arrangements that they form in the neuropil. Some immunoreactive varicosities formed synaptic associations with somata or dendrites suggesting that serotoninergic systems are capable of influencing the activity of these structures post‐synaptically. No examples of axo‐axonic synapses were found. Most varicosities, however, did not form identifiable synaptic junctions, but were closely associated with somata, dendrites or axons. Some of these associations may be functional but morphological evidence for this is lacking.