Sinapsi interneuroniche in aggregati di cellule cerebellari di embrione di pollo in coltura

Alberto Stefanelli; Emilia Cataldi; Luisa Anna Ieradi

Atti della Accademia Nazionale dei Lincei. Classe di Scienze Fisiche, Matematiche e Naturali. Rendiconti (1975)

  • Volume: 59, Issue: 6, page 831-835
  • ISSN: 0392-7881

Abstract

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Embryonic rudiments of the cerebellum of 11 days old chick embryos were dissociated with trypsin; numerous spherules or globets of 100-300 µ diameter were re-aggregated after some hours; these were cultivated in vitro in a giratory shaker for a maximum of 21 days. Ultra thin sections for electron microscopy observation were made. Purkinje cells, granule cells and Golgi cells are recognizable. Various parts of these globets were found rich in synaptic knobs and other simple synaptic patterns as well some complex synaptic systems typical of normal cerebellum. Easily identifiable are cerebellar "glomeruli" formed of a central "rosette" synaptically joined with dendritic claws of the granule cells and "en marron" systems with the perikaryon of the Golgi cells. The complete absence of all extracerebellar afference is the proof that granule cells and Golgi cells are capable of synaptic connection with afferents of a different nature to those normally formed by mossy fibres and other fibres of extracerebellar origin. It is thus experimentally demonstrated that it is the recipient neuron which determines the synaptic pattern whatever the nature of the afference. It is also demonstrated that it is the activity of the efferent or recipient station which determines the synaptogenetic behaviour of nervous pathways.

How to cite

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Stefanelli, Alberto, Cataldi, Emilia, and Ieradi, Luisa Anna. "Sinapsi interneuroniche in aggregati di cellule cerebellari di embrione di pollo in coltura." Atti della Accademia Nazionale dei Lincei. Classe di Scienze Fisiche, Matematiche e Naturali. Rendiconti 59.6 (1975): 831-835. <http://eudml.org/doc/290904>.

@article{Stefanelli1975,
author = {Stefanelli, Alberto, Cataldi, Emilia, Ieradi, Luisa Anna},
journal = {Atti della Accademia Nazionale dei Lincei. Classe di Scienze Fisiche, Matematiche e Naturali. Rendiconti},
language = {ita},
month = {12},
number = {6},
pages = {831-835},
publisher = {Accademia Nazionale dei Lincei},
title = {Sinapsi interneuroniche in aggregati di cellule cerebellari di embrione di pollo in coltura},
url = {http://eudml.org/doc/290904},
volume = {59},
year = {1975},
}

TY - JOUR
AU - Stefanelli, Alberto
AU - Cataldi, Emilia
AU - Ieradi, Luisa Anna
TI - Sinapsi interneuroniche in aggregati di cellule cerebellari di embrione di pollo in coltura
JO - Atti della Accademia Nazionale dei Lincei. Classe di Scienze Fisiche, Matematiche e Naturali. Rendiconti
DA - 1975/12//
PB - Accademia Nazionale dei Lincei
VL - 59
IS - 6
SP - 831
EP - 835
LA - ita
UR - http://eudml.org/doc/290904
ER -

References

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  1. CATALDI, E., IERADI, L. A. e CARAVITA, S., A cetylcholinesterase distribution in the cerebellar cortex in the chick during development: an electron microscopic study. «J. of Neurocytol.», 5, 35-48 (1974). 
  2. CHAN-PALAY, V. e PALAY, S. L., Tendril and glomerular collaterals of climbing fibres in the granular layer ofthe Rat cerebellar cortex. «Z. Anat. Entw. Gesch.», 133, 247-273 (1971). 
  3. GRAY, E. G., Axo-somatic and axo-dendritic synapses of cerebellar cortex. «J. Anat.», 93, 345-350, London (1961). 
  4. HAMORI, J. e SZENTAGOTHAI, J., Partecipation of Golgi neurone processes in the cerebellar glomeruli. «Exp. Brain Res.», 2, 118-128 (1966). 
  5. IERADI, L. A. e CATALDI, E., Localizzazioni della colinesterasi nel cervelletto di Uccelli, «Riv. di Istoch.», 10, 413-420 (1964). 

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