[Sexual dimorphism in human medial raphe nuclei. Preliminary study with the Golgi cox method].
Brains from a female and a male newborn who died from an asphictic syndrome were examined to study the cytoarchitecture of the median raphe nucleus using the Golgi-Cox and morphometric methods. This nucleus is part of the serotonergic system. The morphometric analysis showed in the female newborn a significant increase of neurons. Also she had a higher proportion of ovoid and multipolar cells and a lower proportion of fusiform cells than the newborn male. Our findings suggest that this neuronal distribution may be the anatomical substrate for a serotonergic specific system in each sex.
Cordero
M E
ME
Instituto de Ciencias Biomédicas, Facultad de Medicina, Universidad de Chile. mcordero@machi.med.uchile.cl
Valenzuela
C Y
CY
Torres
R
R
D005260:Female; D006801:Humans; D007231:Infant, Newborn; D008297:Male; D009474:Neurons / Q000166:cytology*; D011903:Raphe Nuclei / Q000166:cytology*; D012727:Sex Characteristics; D013194:Staining and Labeling / Q000379:methods
Dimorfismo sexual en el núcleo mediano del rafe humano. Estudio preliminar con el método de Golgi cox.