6533b873fe1ef96bd12d4e98
RESEARCH PRODUCT
Adrenergic activation of phospholipase D in primary rat astrocytes.
Jochen KleinKonrad LöffelholzRonald Gonzalezsubject
Agonistmedicine.medical_specialtyCarbacholmedicine.drug_classAdrenergicBiologyMethoxamineMethoxamineNorepinephrineInternal medicinemedicineAdrenergic antagonistPhospholipase DAnimalsAdrenergic agonistCells CulturedDose-Response Relationship DrugPhospholipase DGeneral NeuroscienceRatsenzymes and coenzymes (carbohydrates)Endocrinologymedicine.anatomical_structureAstrocytesNeuroglialipids (amino acids peptides and proteins)medicine.drugdescription
Phospholipase D (PLD) activity was investigated in astrocytes prepared from newborn rat cerebral cortex using the transphosphatidylation assay. Basal PLD activity was measurable and was found to be enhanced by ATP, carbachol and noradrenaline. The activation by noradrenaline (EC50, 0.68 microM) was mimicked by methoxamine (EC50, 65 microM), an alpha 1-specific adrenergic agonist, and was inhibited by prazosine, an alpha 1-specific adrenergic antagonist. Clonidin, an alpha 2-adrenergic agonist, slightly lowered PLD activity whereas beta-adrenergic drugs were without effect. Experiments with mitogens indicate that PLD activation in astrocytes may be involved in the control of astrocytic cell proliferation.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 1996-11-01 | Neuroscience letters |