Effects of early monocular deprivation on choline acetyltransferase and glutamic acid decarboxylase in pigeon visual Wulst

Paola Bagnoli, Andreas Burkhalter, Alexander Vischer, Hermann Henke, Michel Cuénod

Research output: Contribution to journalArticlepeer-review

13 Scopus citations

Abstract

Choline acetyltransferase (ChAT) and glutamic acid decarboxylase (GAD) activities were measured in various visual structures of the pigeon brain after long-term monocular deprivation followed by short-term binocular presence or absence of light stimulation. The short-term phase (45 min) was coupled with a 2-deoxyglucose experiment in order to select the adequate brain samples. After monocular deprivation during the first 6-11 months, ChAT activity was higher by 40-60% in the dorsolateral visual Wulst contralateral to the deprived eye, as compared to the other side. In the same structure, animals, either monocularly deprived or undeprived and exposed binocularly to environmental light for 45 min, had higher ChAT activities on both sides than those maintained in the dark. Monocular deprivation performed in adult animals did not affect the ChAT activity in visual Wulst. GAD activity was bilaterally decreased in the visual Wulst after early monocular deprivation. These results suggest that early monocular deprivation has an effect on biochemical systems involved in synaptic transmission at selected relays of the visual pathways.

Original languageEnglish
Pages (from-to)289-302
Number of pages14
JournalBrain Research
Volume247
Issue number2
DOIs
StatePublished - Sep 16 1982
Externally publishedYes

Keywords

  • choline acetlytransferase
  • glutamic acid decarboxylase
  • monucular deprivation
  • pigeon
  • visual Wulst

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