Colocalization of neurotransmitter receptors on astrocytes in explant cultures of rat CNS
| Autor: | L Hösli, E Hösli |
|---|---|
| Rok vydání: | 2000 |
| Předmět: |
Central Nervous System
Receptors Peptide Biology Cellular and Molecular Neuroscience chemistry.chemical_compound Neurotransmitter receptor Culture Techniques medicine Animals Receptors Cholinergic Tissue Distribution Neurotransmitter Receptor Neuropeptides Colocalization Cell Biology Immunohistochemistry Rats Receptors Adrenergic Receptors Neurotransmitter Electrophysiology medicine.anatomical_structure chemistry Astrocytes Second messenger system Cholinergic Neuroglia Autoradiography Neuroscience Astrocyte |
| Zdroj: | Neurochemistry international. 36(4-5) |
| ISSN: | 0197-0186 |
| Popis: | In recent years evidence has accumulated that astrocytes express functional receptors for a variety of neurotransmitters/neuromodulators. By means of electrophysiological and combined autoradiographic and immunohistochemical methods we have demonstrated the colocalization of cholinergic, adrenergic and peptidergic receptors on astrocytes in explant cultures from various regions of rat central nervous system. A great number of biochemical and electrophysiological studies from other laboratories have shown that most of the neurotransmitters exert their effects on second messenger systems and on Ca 2+ -activated K + -channels . Furthermore, certain neurotransmitters are involved in the regulation of energy metabolism by stimulating enzymatic breakdown of glycogen in astrocytes. It was suggested that there is a cross-talk between the various neurotransmitter receptors on the glial membrane and that these receptors act in a synergistic or antagonistic way. The coexistence of cholinergic and peptidergic receptors on astrocytes is of great interest since both neurotransmitter systems are involved in cognitive functions and are impaired in patients with Alzheimer’s dementia. The question is therefore raised whether not only neurones but also astrocytes might be involved in neurodegenerative disorders such as Alzheimer’s disease. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect