Reciprocal synaptic relations between CRF-immunoreactive- and TRH-immunoreactive neurons in the paraventricular nucleus of the rat hypothalamus.
By double immunoelectron microscopy, we studied synaptic relations between corticotropin-releasing factor (CRF)-immunoreactive (ir) and thyrotropin-releasing hormone (TRH)-ir neurons in the paraventricular nucleus (PVN) of the rat hypothalamus. CRF-ir and TRH-ir neurons made reciprocal synaptic connections in the medial and periventricular parvocellular regions. These results may suggest that both the parvocellular neurons interplay on their hypophysiotropic functions within the PVN.
Hisano
S
S
Department of Anatomy, School of Medicine, University of Tokushima, Japan.
Fukui
Y
Y
Chikamori-Aoyama
M
M
Aizawa
T
T
Shibasaki
T
T
D000818:Animals; D001369:Axons / Q000648:ultrastructure; D003346:Corticotropin-Releasing Hormone / Q000032:analysis*; D003712:Dendrites / Q000648:ultrastructure; D008297:Male; D016253:Microscopy, Immunoelectron; D010286:Paraventricular Hypothalamic Nucleus / Q000502:physiology / Q000648:ultrastructure*; D051381:Rats; D017208:Rats, Wistar; D013569:Synapses / Q000648:ultrastructure*; D013973:Thyrotropin-Releasing Hormone / Q000032:analysis*
D013973:Thyrotropin-Releasing Hormone; D003346:Corticotropin-Releasing Hormone