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PHAR2002 Term 1 Drugs Adrenoceptors L11

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