Back to Search
Start Over
The intrinsic neuronal organisation of the nucleus of the basal optic root in the domestic chicken; a light and electron microscopic study using anterograde tracers and postembedding GABA-immunostaining.
- Source :
-
European journal of morphology [Eur J Morphol] 2002 Apr; Vol. 40 (2), pp. 101-13. - Publication Year :
- 2002
-
Abstract
- The intrinsic neuronal organisation in the nucleus of the basal optic root of chickens was investigated. The divergent connections with various areas and the functional complexity of the nucleus require a complex intrinsic structural arrangement. Therefore, an analysis of Golgi impregnated material, ultrastructure, GABA-immunocytochemistry and biotinylated dextran-amine anterograde tracer analysis of the nucleus was carried out. In the Golgi analysis, a characteristic dendritic ramification pattern of two types of putative projection neurons was observed. These neurons form dendritic nests with their overlapping dendritic terminal sections, that develop synaptic fields with the optic fibre terminals. These synaptic fields were confirmed by electron microscopy. GABA-immunopositive terminals synapse with distinct loci of the dendritic trees of projection neurons; they may therefore play an important role in the inhibitory-modulatory system of the nucleus of the basal optic root. The GABA-immunopositive terminals derive from small and/or elongated local circuit neurons which receive retinal afferents, and from myelinated fibres afferents to the nucleus of unknown origin.
- Subjects :
- Animals
Biotinylation
Cell Nucleus ultrastructure
Chickens
Dendrites pathology
Dextrans chemistry
Golgi Apparatus metabolism
Golgi Apparatus ultrastructure
Immunohistochemistry
Microscopy, Electron
Models, Anatomic
Synapses
Time Factors
Neurons pathology
Neurons ultrastructure
Optic Nerve ultrastructure
gamma-Aminobutyric Acid metabolism
Subjects
Details
- Language :
- English
- ISSN :
- 0924-3860
- Volume :
- 40
- Issue :
- 2
- Database :
- MEDLINE
- Journal :
- European journal of morphology
- Publication Type :
- Academic Journal
- Accession number :
- 12854048
- Full Text :
- https://doi.org/10.1076/ejom.40.2.101.15446