Possible axo-axonal synapses between peripheral adrenergic and cholinergic nerve terminals
| Autor: | Berndt Ehinger, Bengt Falck, B. Sporrong |
|---|---|
| Rok vydání: | 1970 |
| Předmět: |
Sympathetic Nervous System
Histology Dopamine Iris Adrenergic Synaptic vesicle Pathology and Forensic Medicine law.invention Parasympathetic Nervous System law Methods Animals Close contact Nerve Endings Chemistry Heart Cell Biology Rat heart Axons Rats Peripheral Microscopy Electron Synapses Ultrastructure Cholinergic Electron microscope Neuroscience |
| Zdroj: | Zeitschrift f�r Zellforschung und Mikroskopische Anatomie. 107:508-521 |
| ISSN: | 1432-0878 0302-766X |
| DOI: | 10.1007/bf00335438 |
| Popis: | The relations between adrenergic and cholinergic terminals were studied in rat iris and rat heart with the electron microscope. Adrenergic terminals were identified by treating the animals with 5-hydroxydopamine, which produces dense-cored synaptic vesicles in adrenergic terminals in tissues fixed in glutaraldehyde and osmium. The specificity of this observation was verified. It was found that adrenergic and cholinergic nerve terminals often come in close contact with one another, the distance between the adjoining membranes being about 250 A. At times, faint membrane thickenings could be observed in these places. The available pharmacological, physiological, and morphological evidence leaves little room for doubt that cholinergic terminal fibres can influence the adrenergic fibres. From mainly morphological evidence, it is also postulated that adrenergic terminals influence cholinergic ones. |
| Databáze: | OpenAIRE |
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