Dendritic arbor alterations in the medial superior olivary neurons of neonatally underfed rats.
Golgi-Cox-stained bipolar cells of the medial superior olive (MSO) were analyzed in control and undernourished Wistar strain rats at 12, 20, 30 and 40 days of age. Undernutrition significantly reduced the number of dendrites and the extension of ipsilateral dendritic prolongations, with no effects upon the cross-sectional somal area and minimal alterations in the corresponding contralateral dendritic branches. The data suggest that in underfed rate, afferents from the receptors projecting to the MSO via the anteroventral cochlear nuclei may cause an imblance in the binaural interactions which occur between the axon terminals and the ipsilateral contralateral dendritic arbors of MSO neurons.
Salas
M
M
Department of Physiology, Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, México.
Torrero
C
C
Regalado
M
M
Martínez-Gómez
M
M
Pacheco
P
P
D000818:Animals; D000831:Animals, Newborn; D001835:Body Weight; D048429:Cell Size; D003712:Dendrites / Q000473:pathology*; D002149:Energy Intake; D005260:Female; D009748:Nutrition Disorders / Q000473:pathology*; D009847:Olivary Nucleus / Q000254:growth & development* / Q000473:pathology*; D009929:Organ Size; D011247:Pregnancy; D051381:Rats; D017208:Rats, Wistar