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. Author manuscript; available in PMC: 2020 Jun 2.
Published in final edited form as: Adv Exp Med Biol. 2019;1175:45–91. doi: 10.1007/978-981-13-9913-8_3

Fig. 3.6.

Fig. 3.6

Classes of purinoreceptors. ATP after being released from neurones and glia is rapidly degrading by ectonucleotidases into ADP, AMP and adenosine, which act on P1 metabotropic adenosine receptors, P2X ionotropic and P2Y metabotropic nucleotide receptors. Adenine stimulates A0 adenine metabotorpic receptors, which hitherto have not been detected in astrocytes. Modified from [406]