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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Hendry, S. H. Jones, E. G. Defelipe, J. |
| Description | Author Affiliation: DeFelipe J ( Section of Neuroanatomy, Cajal Institute, Madrid, Spain.); |
| Abstract | Antibodies directed against the calcium-binding protein parvalbumin label a subpopulation of gamma-aminobutyric acid-releasing neurons in the cerebral cortex that is thought to have particular metabolic and physiological properties. The chandelier cell is a well-characterized morphological type of gamma-aminobutyric acid-releasing cortical interneuron, the axon of which possesses very distinctive terminal portions located around the initial axon segments of pyramidal cells. In the pre- and postcentral gyri of the monkey, we found that these distinctive terminal portions of chandelier cell axons were immunocytochemically stained for parvalbumin in a manner that reveals their complete structure. The chandelier cell axons were identified light-microscopically as short, vertically oriented rows of parvalbumin-positive puncta (PV-Rs). The PV-Rs varied in both length and complexity and were located beneath unstained pyramidal cells. PV-Rs were very numerous in layers II-III, where most pyramidal cells appeared to have a PV-R beneath them. Fewer PV-Rs were found in deeper layers, and in layer VI PV-Rs were rare. With EM all PV-Rs could be seen to form multiple synaptic contacts of the symmetrical type on the initial segments of pyramidal cell axons. Parvalbumin immunoreactivity can therefore be used as a reliable marker for chandelier cell axons. |
| ISSN | 00278424 |
| e-ISSN | 10916490 |
| Journal | Proceedings of the National Academy of Sciences of the United States of America |
| Issue Number | 6 |
| Volume Number | 86 |
| Language | English |
| Publisher | National Academy of Sciences |
| Publisher Date | 1989-04-01 |
| Publisher Place | United States |
| Access Restriction | Open |
| Subject Keyword | Axons Ultrastructure Cerebral Cortex Interneurons Muscle Proteins Parvalbumins Animals Histocytochemistry Immunoenzyme Techniques Macaca Fascicularis Microscopy, Electron Synapses Gamma-Aminobutyric Acid Secretion Multidisciplinary |
| Content Type | Text |
| Resource Type | Article |
| Subject | Multidisciplinary |
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