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Autonomic Pharmacology
Drugs affecting the ANS
57
Medical
Graduate
06/01/2009

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Cards

Term
carbachol
Definition
cholinergic agonist (both muscarinic and nicotinic)
Term
bethanechol
Definition
cholinergic agonist (muscarinic only)
Term
physostigmine
Definition
acetylcholine-esterase inhibitor; helps drainage of eye with high IOP
Term
atropine
Definition
cholinergic antagonist (muscarinic only)
Term
trimethaphan
Definition
cholinergic antagonist (nicotinic only)
Term
curare
Definition
cholinergic antagonist (nicotinic only)
Term
hemicholinium
Definition
inhibits synthesis of acetylcholine
Term
botulinum toxin
Definition
inhibits release of acetylcholine from presynaptic neuron
Term
phenylephrine
Definition
noradrenergic agonist (alpha-1 only)
Term
isoproterenol
Definition
noradrenergic agonist (beta-1 only)
Term
cocaine
Definition
blocks noradrenergic Reuptake I, increasing NE concentration in synapse
Term
D-amphetamine
Definition
reverses noradrenergic Reuptake I, increasing NE release
Term
phentolamine
Definition
non-selective noradrenergic antagonist (alpha-1 only); reversibly bound
Term
propranolol
Definition
non-selective noradrenergic antagonist (beta-1 only); reversibly bound
Term
guanethidine
Definition
blocks NE release
Term
alpha-methyltyrosine
Definition
inhibits noradrenergic synthesis by preventing the action of tyrosine hydroxylase (rate-limiting step)
Term
reserpine
Definition
prevents vesicles from storing NE
Term
α-methyl-DOPA
Definition
false noradrenergic transmitter, acts as α2 agonist; has different properties than NE in the CNS, same properties as NE in the periphery
Term
tyramine
Definition
prototype INDIRECT-acting drug (release or block reuptake of released NE)
Term
epinephrine
Definition
prototype DIRECT-acting drug (combine directly with the receptor to produce a response; also removed from terminal by Uptake 1); α1, α2, β1, β2
Term
levarterenol
Definition
Direct-acting sympathomimetic: α1, α2, β1
Term
phenylephrine
Definition
Direct-acting sympathomimetic: α1; nasal decongestant, maintains BP during anesthesia, produces mydriasis
Term
isoproterenol
Definition
Direct-acting sympathomimetic: β1, β2; reduces diastolic BP, stimulates the heart, bronchodilation
Term
terbutaline
Definition
Direct-acting sympathomimetic: less β1, more β2; treat acute asthma, fast-acting, short duration
Term
dobutamine
Definition
Direct-acting sympathomimetic: less α1, more β1, less β2
Term
clonidine
Definition
Direct-acting sympathomimetic: less α1, more α2
Term
phenelzine
Definition
MAO (monoamine oxidase) inhibitor
Term
entacapone
Definition
COMT (catechol-O-methyl transferase) inhibitor
Term
albuterol
Definition
β2 agonist; treat acute asthma, fast-acting, short duration
Term
salmeterol
Definition
β2 agonist; treat chronic asthma, long duration, must be given with corticosteroid
Term
formoterol
Definition
β2 agonist; treat chronic asthma, long duration, must be given with corticosteroid
Term
ritodrine
Definition
β2 agonist; relaxes uterine smooth muscle during 3rd trimester
Term
dopamine
Definition
β1 agonist; increases heart contraction, to treat low cardiac output, short-acting
Term
dobutamine (analog of dopamine)
Definition
β1 agonist; increases heart contraction, to treat low cardiac output, very short duration
Term
tyramine
Definition
indirect-acting sympathomimetic
Term
ephedrine
Definition
indirect agonist at α1, β1; direct agonist at β2; less potent and longer acting than epinephrine
Term
pseudoephedrine
Definition
indirect agonist at α1, β1
Term
phenoxybenzamine
Definition
non-selective α adrenergic antagonist; irreversibly bound
Term
prazosin
Definition
selective α1 antagonist
Term
terazosin
Definition
selective α1 antagonist; longer-acting than prazosin
Term
tamsulosin
Definition
selective α1A antagonist; used for treating BPH
Term
nadolol
Definition
non-selective β adrenergic antagonist; long-acting
Term
timolol
Definition
non-selective β adrenergic antagonist; oral and topical application for glaucoma
Term
pindolol
Definition
non-selective β adrenergic antagonist with modest β1 agonist effects (less slowing of the heart and changes in plasma triglycerides)
Term
lebetalol
Definition
non-selective β adrenergic antagonist with α1 antagonist properties; used mostly in emergencies
Term
carvedilol
Definition
non-selective β adrenergic antagonist with α1 antagonist properties; longer half-life than labetalol
Term
metoprolol
Definition
selective β1 adrenergic antagonist; short-acting
Term
atenolol
Definition
selective β1 adrenergic antagonist; longer half-life than metoprolol; most common
Term
esmolol
Definition
selective β1 adrenergic antagonist; extremely short half-life; used for emergencies
Term
yohimbine
Definition
α2 receptor antagonist
Term
α-methyl-tyrosin
Definition
inhibits enzyme tyrosine hydroxylase (the rate-limiting step in catecholamine, NE & DA, synthesis)
Term
carbidopa
Definition
inhibits enzyme decarboxylase in periphery, reducing the effects of dopamine in the periphery; usually given with L-DOPA; allows more to pass BBB to replace DA in Parkinson's
Term
entacapone
Definition
inhibits peripheral COMT (inactivates L-DOPA); increases amount of circulating L-DOPA
Term
phenelzine
Definition
inhibits enzyme MOA; used to treat depression; be cautious of use with tyramine
Term
pilocarpine
Definition
direct muscarinic agonist; used to open the drainage angle in the eye, decreasing IOP
Term
echothiophate
Definition
AChE inhibitor; used to reduce high IOP
Term
sildenafil
Definition
inhibits enzyme phosphodiesterase type 5; extends vasodilation in parasympathetically innervated vascular smooth muscle (penis)
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