'De novo' formation of synapses by experimentally induced presynaptic dendrites in adult mammalian brain

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Abstract

The paper presents morphological evidence that upon deafferentation small Golgi cells and granule cells of the cerebellar cortex as well as geniculo-cortical relay cells of the lateral geniculate nucleus develop presynaptic sites on their otherwise exclusively postsynaptic dendrites. The new synapses are, therefore, mostly dendrodendritic, a logical consequence of the fact that in the absence of axonal sprouting in the two regions, the reactive synaptogenesis in the cerebellar cortex and LGN is accomplished by the participation of the (newly formed) presynaptic dendrites.

Original languageEnglish
Pages (from-to)173-187
Number of pages15
JournalActa Biologica Academiae Scientiarum Hungaricae
Volume33
Issue number2-3
Publication statusPublished - 1982

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dendrites
synapse
Dendrites
Synapses
brain
Brain
Cerebellar Cortex
cortex
Geniculate Bodies
cells
sprouting
granules
participation

ASJC Scopus subject areas

  • Agricultural and Biological Sciences(all)

Cite this

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title = "'De novo' formation of synapses by experimentally induced presynaptic dendrites in adult mammalian brain",
abstract = "The paper presents morphological evidence that upon deafferentation small Golgi cells and granule cells of the cerebellar cortex as well as geniculo-cortical relay cells of the lateral geniculate nucleus develop presynaptic sites on their otherwise exclusively postsynaptic dendrites. The new synapses are, therefore, mostly dendrodendritic, a logical consequence of the fact that in the absence of axonal sprouting in the two regions, the reactive synaptogenesis in the cerebellar cortex and LGN is accomplished by the participation of the (newly formed) presynaptic dendrites.",
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AB - The paper presents morphological evidence that upon deafferentation small Golgi cells and granule cells of the cerebellar cortex as well as geniculo-cortical relay cells of the lateral geniculate nucleus develop presynaptic sites on their otherwise exclusively postsynaptic dendrites. The new synapses are, therefore, mostly dendrodendritic, a logical consequence of the fact that in the absence of axonal sprouting in the two regions, the reactive synaptogenesis in the cerebellar cortex and LGN is accomplished by the participation of the (newly formed) presynaptic dendrites.

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