Autonomic Drugs by Class Flashcards
- acetylcholine
- bethanechol
- carbachol
- cevimeline
direct M agonists, choline esters
muscarine
pilocarpine
M agonists, alkaloids
nicotine
varenicline
direct nicotinic agonist
neostigmine physostigmine pyridostigmine rivastigmine ambenonium demecarium carbaryl
cholinesterase inhibitors, carbamates
edrophonium
cholinesterase inhibitor, simple alcohol ester
echothiophate soman sarin parathion malathion isofluorophate DFP
cholinesterase inhibitor, organophosphates
donepezil
tacrine
galantamine
cholinesterase inhibitors
atropine scopolamine homatropine pirenzepine tropicamide tolterodine dicyclomine fesoteridine mepenzolate solifenacin oxybutinin darifenacin
M antagonist - tertiary amine
atropine methyl nitrate methscopolamine ipratropium propantheline glycopyrrolate
M antagonist - quaternary amine
hexamethonium
trimethaphan
mecamylamine
ganglionic blocking drugs
pralidozime (2-PAM)
cholinesterase regenerator
epinephrine (a1, a2, b1, b2) norepinephrine (a1, a2, b1) isoproterenol (b1, b2) dobutamine (b1) dopamine (d1)
catecholamines
ephedrine/pseudoephedrine cocaine tyramine amphetamine methamphetamine methylphenidate
indirect sympathomimetics
phenylephrine
methoxamine
oxymetazoline (afrin)
alpha-1 selective agonists
clonidine
methydopa
guanfacine
guanabenz
alpha-2 selective agonists
dobutamine
prenalterol
beta-1 selective agonists
albuterol
salmeterol
terbutaline
beta-2 selective agonists
- act on peripheral vasculature
- contract smooth muscle, pressor effects
alpha 1 adrenoceptors
- presynaptic autoregulation of neurotransmitter release
- decrease cAMP
alpha 2 adrenoceptors
- activate adenylyl cyclase, increase cAMP
- equal affinity for epi and NE
beta 1 adrenoceptors
- activate adenylyl cyclase, increase cAMP
- higher affinity for epi than NE
beta 2 adrenoceptors
- potent vasoconstrictor (alpha-1) and cardiac stimulant (beta-1)
- positive inotropic and chronotropic actions on the heart (beta-1)
- epinephrine activates beta-2 receptors
- mixed effects on TPR, increases venous capacitance
epinephrine
- alpha-1, beta-1 activator
- little effect on beta-2 receptors
- increases peripheral resistance
- increases diastolic and systolic BP
- compensatory vagal reflexes overcome direct positive chronotropy, at high doses may directly increase HR
norepinephrine
- potent nonselective beta agonist
- positive chronotropic and inotropic actions
- increases cardiac output
- decreases diastolic and MAP
isoproterenol
- activates D1 receptors in renal vasculature
- increases renal blood flow
dopamine
- relatively beta-1 selective synthetic catecholamine
- activates alpha-1 receptors
dobutamine
- alpha-1 agonist
- not inactivated by COMT, longer duration of actions
- mydriatic and decongestant, can raise BP
phenylephrine
alpha-1 selective sympathomimetic
methoxamine
first orally active sympathomimetic drug
ephedrine
- OTC decongestant
- release endogenous NE
pseudoephedrine