Retinal fibers make synaptic contact with neuropeptide Y and enkephalin immunoreactive neurons in the intergeniculate leaflet of the rat.
Direct synapses between retinal fibers and neuropeptide Y (NPY) and/or enkephalin-immunoreactive (ENK-I) neurons were investigated in the intergeniculate leaflet (IGL) of the rat, using combined immunohistochemical and degeneration techniques. Degenerating retinal fibers terminated on dendrites of NPY-I and/or ENK-I neurons. NPY-I fibers in the IGL formed axo-dendritic synapses on non-immunoreactive dendrites. Most of them were asymmetrical synapses. ENK-I axon terminals contacted non-immunoreactive dendrites with symmetrical synapse.
Takatsuji
K
K
Osaka Prefectural College of Nursing, Japan.
Miguel-Hidalgo
J J
JJ
Tohyama
M
M
D000818:Animals; D001369:Axons / Q000648:ultrastructure; D003712:Dendrites / Q000648:ultrastructure; D004745:Enkephalins / Q000032:analysis*; D005829:Geniculate Bodies / Q000502:physiology / Q000648:ultrastructure*; D007124:Immunoenzyme Techniques; D016253:Microscopy, Immunoelectron; D009412:Nerve Fibers / Q000648:ultrastructure*; D009478:Neuropeptide Y / Q000032:analysis*; D051381:Rats; D011919:Rats, Inbred Strains; D012160:Retina / Q000502:physiology / Q000648:ultrastructure*; D013569:Synapses / Q000648:ultrastructure*
D004745:Enkephalins; D009478:Neuropeptide Y