An ultrastructural study of somal appositions in the suprachiasmatic nucleus and anterior hypothalamus of the rat.
Somatic appositions of glial and neuronal elements in the suprachiasmatic nucleus (SCN) and the anterior hypothalamus (AH) were evaluated. Neuronal somas in the SCN exhibited more coverage by astrocytes than did those in the AH. Conversely, somas in the AH showed more coverage by neuronal elements than those in the SCN. All measurements of somal appositions were independent of circadian influences.
Elliott
A S
AS
Department of Psychology and Neuroscience Program, Michigan State University, East Lansing 48824-1117.
Nunez
A A
AA
D000818:Animals; D001253:Astrocytes / Q000378:metabolism / Q000648:ultrastructure; D002940:Circadian Rhythm / Q000502:physiology; D005904:Glial Fibrillary Acidic Protein / Q000378:metabolism; D007032:Hypothalamus, Anterior / Q000378:metabolism / Q000648:ultrastructure*; D008854:Microscopy, Electron; D009474:Neurons / Q000378:metabolism / Q000648:ultrastructure; D051381:Rats; D017207:Rats, Sprague-Dawley; D013493:Suprachiasmatic Nucleus / Q000378:metabolism / Q000648:ultrastructure*
D005904:Glial Fibrillary Acidic Protein