Axonal Transport of Dopamine-containing Vesicles LabelledIn Vivowith [3H] Reserpine
| Autor: | M. N. Castel, P.M. Laduron, Delphine Lechardeur, Daniel Scherman, M Reibaud |
|---|---|
| Rok vydání: | 1993 |
| Předmět: |
Male
Aging medicine.medical_specialty Reserpine Dopamine Nigrostriatal pathway Substantia nigra Biology Tritium Microtubules Rats Sprague-Dawley Internal medicine medicine Animals Binding Sites General Neuroscience Dopaminergic Biological Transport Axons Corpus Striatum Rats Substantia Nigra Vesicular monoamine transporter Endocrinology Monoamine neurotransmitter medicine.anatomical_structure nervous system Axoplasmic transport Biophysics Rabbits Synaptic Vesicles Colchicine medicine.drug |
| Zdroj: | European Journal of Neuroscience. 5:449-453 |
| ISSN: | 1460-9568 0953-816X |
| DOI: | 10.1111/j.1460-9568.1993.tb00511.x |
| Popis: | Axonal transport of the vesicular monoamine transporter was assayed in the rat brain by in vivo binding of the specific ligand [3H]reserpine. Because of the marked localization of reserpine binding sites in dopaminergic cell bodies and nerve terminals, the dopaminergic nigrostriatal pathway was chosen for the study of the axonal transport of the monoamine carrier present in the membrane of synaptic vesicles. When labelled reserpine was injected into the substantia nigra, a delayed accumulation of radioactivity in the ipsilateral striatum was observed approximately 4 h after the injection. Similarly, injection into the right striatum was followed by a substantial accumulation of radioactivity in the ipsilateral substantia nigra, which was prevented by peripheral injection of unlabelled reserpine or tetrabenazine. This process was rapid and dependent on microtubules. In senescent rats, the amount of retrogradely transported [3H]reserpine was significantly reduced. These results demonstrate that labelled reserpine may be used to monitor in vivo fast axonal transport in central neurons. |
| Databáze: | OpenAIRE |
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