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Adrenoceptors L11
PHAR2002 Term 1 Drugs Adrenoceptors L11
| Term | Definition |
|---|---|
| Adrenoceptors are what type of receptors? | GPCR |
| Order of Potency: Alpha-adrenoceptors | Adrenaline > Noradrenaline > Isoprenaline (ANI) |
| Order of Potency: Beta1-adrenoceptors | Isoprenaline > Adrenaline > Noradrenaline (IAN) |
| Order of Potency: Beta2-adrenoceptors | Isoprenaline > Noradrenaline > Adrenaline (INA) |
| Most alpha1 are ... Most alpha2 are ... | Postsynaptic, Presynaptic |
| AGONIST Activates alpha and beta (but more strongly for alpha) | Noradrenaline |
| AGONIST Activates alpha and beta (but more strongly for beta) | Adrenaline |
| AGONIST Beta1 and Beta2 Selective | Isoprenaline |
| AGONIST Alpha1 Selective | Phenylephrine |
| AGONIST Alpha2 Selective | Clonidine |
| AGONIST Alpha Selective (but more strongly for alpha2) | alpha-methyl noradrenaline |
| AGONIST Beta Selective (but more strongly for beta2) | Salbutamol |
| ANTAGONIST Alpha Selective | Phentolamine, Phenoxybenzamine |
| ANTAGONIST Alpha Selective (but more strongly for alpha1) | Prazosin |
| ANTAGONIST Beta Selective | Propranolol |
| ANTAGONIST Beta Selective (but more strongly for beta1) | Atenolol |
| Adrenaline at LOW conc. resembles | Isoprenaline |
| Adrenaline at HIGH conc. resembles | Noradrenaline |
| Partial Agonist Alpha2 Selective | Clonidine |
| Partial Agonist Beta Selective | Oxprenolol |