5-Hydroxytryptamine stimulates the formation of inositol phosphate in astrocytes from different regions of the brain - PubMed (original) (raw)

5-Hydroxytryptamine stimulates the formation of inositol phosphate in astrocytes from different regions of the brain

E Hansson et al. Neuropharmacology. 1987 Sep.

Abstract

5-Hydroxytryptamine (5-HT) stimulated the turnover of phosphoinositide in primary cultures of astroglia from the cerebral cortex, striatum, hippocampus and brain stem. Ketanserin and ritanserin, selective antagonists for the central 5-HT2 receptor, inhibited the 5-HT-stimulated formation of inositol monophosphate. In contrast, there was no statistically significant accumulation of cyclic AMP after incubation with different concentrations of 5-HT in any of the cultures studied. The results indicate that astrocytes from various regions of the brain possess 5-HT2 receptors coupled to the formation of inositol phosphates.

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