Chapter

Glioma Signaling

Volume 986 of the series Advances in Experimental Medicine and Biology pp 1-12

Date:

Introduction to Purinergic Signalling in the Brain

  • Geoffrey BurnstockAffiliated withAutonomic Neuroscience Centre, University College Medical School Email author 

Abstract

ATP is a cotransmitter with glutamate, noradrenaline, GABA, acetylcholine and dopamine in the brain. There is a widespread presence of both adenosine (P1) and P2 nucleotide receptors in the brain on both neurons and glial cells. Adenosine receptors play a major role in presynaptic neuromodulation, while P2X ionotropic receptors are involved in fast synaptic transmission and synaptic plasticity. P2Y G protein-coupled receptors are largely involved in presynaptic activities, as well as mediating long-term (trophic) signalling in cell proliferation, differentiation and death during development and regeneration. Both P1 and P2 receptors participate in neuron-glial interactions. Purinergic signalling is involved in control of cerebral vascular tone and remodelling and has been implicated in learning and memory, locomotor and feeding behaviour and sleep. There is increasing interest in the involvement of purinergic signalling in the pathophysiology of the CNS, including trauma, ischaemia, epilepsy, neurodegenerative diseases, neuropsychiatric and mood disorders, and cancer, including gliomas.

Keywords

ATP Adenosine Purinoceptors Cotransmission Neuromodulation Glia Neuron-gial interactions Trophic signalling Memory Sleep Neurodegenerative diseases Gliomas