Konorev--Adrenergic Drugs Flashcards
Methoxamine
A1>a2»»>B
Colonidine
A2>a1»»>B
Norepinephrine
A1=a2; b1»»b2
Epinephrine
A1=a2; b1=b2
Doubutamine
B1>B2»>A
ISOPROTERENOL
B1=B2»»>A
ALBUTEROL, TERBUTALINE
B2»B1»»A
DOPAMINE
D1=D2»B1»A1
FENOLDOPAM
D1»D2
Inhibits Reuptake of DA and NE at presynaptic neuron (indirect)
Cocaine
Inhibitors of MAO (indirect) at presynaptic neuron
Selegilizine (eldepryl)
Phenelzine (Nardil)
Reverse NE and DA uptake mechanism and increase their release (indirect) at post synaptic membrane
Amphetamines, methylphenidate, tyramine
Releasing agent AND a direct adrenergic receptor agonist (at synapse? )
Epinephrine, ephedrine?
Indirect acting adrenergic antagonists
Guanethidine (Ismelin)
Metyrosine
Non selective a1 and a2 antagonists
Phenolamine (OraVerse)
Phenoxybenzamine (Dibensyline)
Direct acting A1 receptor selective antagonist; suffix?
Prazosin (Minipress) Terazosin (Hytrin) Tamsulosin (Flomax) Doxazosin (Cardura) Alfuzosin (Uroxatral) Silodosin (Rapaflo)
Suffix=osin
Mixed adrenoceptor antagonists
Lebatalol (Trandate)–both a1 and beta
Carvedilol (Coreg)–both a1 and beta
Beta adrenoceptor antagonists (B1 and B2)
Propranolol (Inderal)
Pindolol (Visken)
Nadolol (Corgard)
Penbutolol (Levatol)
B1 selective adrenoceptor antagonists
Metoprolol (Toprol)
Betaxolol (Kerlone)
Acebutolol (Sectral)
Atenolol (Tenormin)
A1 found where and what are the actions?
Vascular smooth muscle (innervated)–contraction
Pupillary dilator muscle–contraction (dilates pupil)
Pilomotor smooth muscle–erects hair
Prostate–contraction
Heart–increases force of contraction
A2 found where and actions?
Postsynaptic CNS neurons Platelets--aggregation Adrenergic and cholinergic nerve terminals--inhibits NT release Some vascular smooth muscle--contraction Fat cells--inhibits lypolysis
B1 found where and actions
Heart, juxtaglomerular cells–increases force and rate of contraction; increases renin release
B2 found where and actions
Respiratory, uterine, and vascular smooth muscle–promotes smooth muscle relaxation
Skeletal muscle–promotes potassium uptake
Human liver–activates glycogenolysis
B3 found where and actions?
Bladder–relaxes detrusor muscle
Fat cells–activates lipolysis