Table 6.
Principal P1 and P2 receptors expressed by non-neuronal cells
| Smooth muscle | P2X1, P2X2, P2X4, P2X7, P2Y1, P2Y2 |
| Cardiac muscle | P2X1-6, P2Y2 (plus P2X7 and P2Y1 in isolated ventricle myocytes) |
| Skeletal muscle | P2X1-6, P2Y1, P2Y2, P2Y4, P2Y6 (transiently expressed during development) |
| Osteoblasts | P2X7, P2Y1, P2Y2 |
| Cartilage | P2X2, P2Y1, P2Y2, A2A, A2B |
| Keratinocytes | P2X2, P2X3, P2X5, P2X7, P2Y1, P2Y2, P2Y4, A2B |
| Fibroblasts | P2X7, P2Y1, P2Y2, A2A |
| Adipocytes | P2X1, P2Y1, P2Y2, P2Y4, A1 |
| Epithelial cells | P2X4, P2X5, P2X6, P2X7, P2Y1, P2Y2, P2Y6, P2Y11, A1, A2A, A3 |
| Hepatocytes | P2Y1, P2Y2, P2Y4, P2Y6, P2Y13, A2A, A3 |
| Glial cells | P2X1-7, P2Y1, P2Y2, P2Y4, P2Y6, P2Y11, P2Y12, P2Y13, A1, A2 |
| Sperm | P2X2, P2X7, P2Y2, A1 |
| Endothelial cells | P2X1, P2X4, P2Y1, P2Y2, P2Y4, P2Y6, A1, A2A |
| Erythrocytes | P2X2, P2X4, P2X7, P2Y1 |
| Platelets | P2X1, P2Y1, P2Y12, A2A |
| Immune cells (lymphocytes, neutrophils, macrophages, basophils, mast cells, eosinophils, osteoclasts, microglia, dendritic cells) | P2X1, P2X4, P2X7, P2Y1, P2Y2, A2A, A3 |
| Exocrine cells | P2X1, P2X4, P2X7, P2Y1, P2Y2, P2Y4, A1, A2A |
| Endocrine cells | P2X1-7, P2Y2, P2Y4, A1, A2A, A2B, A3 |
| Special senses | |
| Inner ear | P2X1, P2X2, P2X3, P2X7, P2Y2, P2Y4, A1 |
| Eye | P2X2, P2X7, P2Y2, A1, A2, A3 |
| Tongue | P2X2, P2X3, P2Y1, A1 |
| Olfactory organ | P2X2, P2X4, P2Y1, P2Y2, A2A, A3 |
Reproduced from Burnstock (2012c), with permission from Wiley.