Differential distribution of afferents containing serotonin and neuropeptide Y within the marmoset suprachiasmatic nucleus.
Neuropeptide Y-containing fibers/terminals were immunohistochemically detected in the ventral portion of the marmoset suprachiasmatic nucleus, approximately matching the distribution of its retinal afferents. On the other hand, serotonergic fibers/terminals were found mostly in central and dorsal areas of the suprachiasmatic nucleus, almost completely sparing its ventral portion. These data may represent a morphological substrate for differential actions of serotonin and neuropeptide Y in the control of circadian rhythmicity in marmosets.
Cavalcante
Jeferson S
JS
Department of Physiology and Biophysics, Institute of Biomedical Sciences, University of São Paulo, Av. Prof. Lineu Prestes 1524, 05508-900, São Paulo, SP, Brazil.
Alves
Adilson S
AS
Costa
Miriam S M O
MS
Britto
Luiz R G
LR
D000344:Afferent Pathways / Q000033:anatomy & histology* / Q000737:chemistry / Q000378:metabolism; D000818:Animals; D002144:Callithrix; D008297:Male; D009475:Neurons, Afferent / Q000737:chemistry / Q000166:cytology / Q000378:metabolism; D009478:Neuropeptide Y / Q000032:analysis*; D012701:Serotonin / Q000032:analysis*; D013493:Suprachiasmatic Nucleus / Q000033:anatomy & histology* / Q000737:chemistry / Q000378:metabolism
D009478:Neuropeptide Y; D012701:Serotonin