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pharmacology final
speth part, long version
153
Medical
Undergraduate 4
05/05/2009

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Term
causes of asthma
Definition
hyperresponsivity, mast cell degranulation, inflammation
Term
First line reversal agents for asthma and COPD fall into these drug classes which act as sympathomimetics
Definition
Beta2agonists, nonselective beta agonists, direct and indirect acting sympathomimetics
Term
Examples of Beta 2 agonists (sympathomimetics) for asthma are:
Definition
albuterol and levalbuterol (short acting)
salmeterol and formoterol (long acting)
Term
Examples of direct and indirect acting sympathomimetics for asthma treatment:
Definition
ephedrine/ephedra
Term
Examples of nonselective beta agonist for asthma
Definition
isoproterenol, epinephrine/adrenaline
Term
Examples of methylxanthines for asthma tx:
Definition
theophylline
Term
Mechanism of theophylline, a methlyxantine for asthma tx:
Definition
phosphodiesterase inhibitor; adenosine (A1) receptor antagonist
Term
Examples of PDE4 selective inhibitors in development for tx of asthma:
Definition
Roflumilast; Cilomilast/AIRFLO; tofimilast
Term
Second line muscarinic antagonists for tx of asthma:
Definition
ipratropium bromide, tiotropium bromide
Term
MOA of muscarinic antagonists for asthma tx:
Definition
blocks vaglly-induced bronchoconstriction
Term
MOA of inhaled corticosteroids for asthma tx (1st line therapy which can be used chronically):
Definition
anti-inflammatory (NOT bronchodilatory); decongestant-like activity in bronchi; potentialte beta2 actions to inhibit cytokine release.
Term
Examples of inhaled corticosteroids:
Definition
fluticasone and budesonide
Term
T/F long-acting beta2agonists MUST be combined with inhaled corticosteroids.
Definition
TRUE (serevent and foradil MUST have a corticosteroid like fluticasone or budesonide mixed in)
Term
MOA of Chromones for asthma tx (inhibition only agent, not for during an attack):
Definition
Alter chloride channel activity leading to inhibition of vagal activity, and eosinophil activation as well as mast cell degranulation . NO immediate effect on bronchial smooth muscle
Term
Examples of chromones for asthma tx:
Definition
cromolyn sodium, nedocromil (Tilade)
Term
5-lipoxygenase inhibitor (a leukotriene pathway inhibitor) for asthma tx:
Definition
Zileuton (zyflo)
Term
MOA of Zileuton (Zyflo):
Definition
Prevents conversion of arachidonic acid into leukotrienes B4 (LTB4), and LTC4, and c LTD4
LTB4 can act as a chemoattractant for neutrophils > eosinophils via their actions on BLT receptors
Minor contributors to severity of asthmatic attacks
LTC4 and LTD4 (cysteinyl leukotrienes) can cause bronchoconstriction and inflammation via their actions on cysLT receptors
Term
Blocks aspirin-induces asthma:
Definition
zileuton (zyflo)
Term
cysLT receptor antagonists (leukotriene pathway inhibitors) for asthma tx:
Definition
monteluast (singulair), zafirlukast (accolate)N
Term
MOA of IgE antibodies for asthma tx (3rd line):
Definition
Binds to IgE domain that binds to mast cells; Prevents the IgE from binding to and activating mast cells
Term
Examples of IgE antibodies for asthma tx:
Definition
Omalizumab (Xolair)
Term
Brand/genric for short acting beta2agonists:
ventolin/________ Xopenex/ _______
Definition
albuterol and levalbuterol
Term
brand/generic for non-selective beta agonist for asthma:
Isuprel/________
Definition
isoproterenol
Term
Brand/generic for long-acting beta2agonists for asthma:
Serevent/______ Foradil/________
Definition
salmeterol and formoterol
Term
brand/generic for muscarinic antagonists for asthma:
Atrovent/____ Spiriva/_______
Definition
ipratropium bromide and tiotropium bromide
Term
brand/generic of inhaled corticosteroids for asthma:
Flovent/____ Pulmicort/_________
Definition
fluticasone and budesonide
Term
brand/generic for long-acting beta2agonists with corticosteroids added:
Advair/______ Symbicort/________
Definition
salmeterol and fluticasone; formoterol and budesonide
Term
big categories of neurotransmitters:
Definition
amines and amino acids; peptides; gases; lipids
Term
MOA of botulinum toxin (botox)
Definition
inhibits release of neurotransmitters and smooths wrinkles or tx cerebral palsy
Term
ionotropic (fast) synaptic transmission is through:
Definition
excitatory (ligand- or voltage-gated ion channels like NMDA, AMPA, kainate) or inhibitory (ligand-gated ion channels) channels
Term
Metabotropic (slow) synaptic neurotransmission is usually through:
Definition
GPCRs (could be through ligand gating of voltage-dependent ion channels opened by G beta/gamma like K or Ca channels)
Term
groups of GPCRs (metabotropic [slow] gulaminergic neutrotransmitters):
Definition
Group I: post-synaptic excitatory (mGlu1 and mGlu5)
Gq coupling PLC, IP3, DAG, intracellular Ca ++ release;
Group II pre-synaptic inhibitory
(mGlu2 and mGlu3) Gi coupling inhibition of cAMP inhibition of Ca++ channels; Group III: pre-synaptic inhibitory(mGlu4, 6, 7, 8)
Gi coupling inhibition of cAMP inhibition of Ca++ channels
Term
T/F GABA neurotrnasmission is INHIBITORY!
Definition
true
Term
MOA of reserpine:
Definition
inhibits VMAT and depletes dopamine stores
Term
MOA of amphetamine:
Definition
increases dopamine release via the dopamine transporter
Term
MOA of pramipexole
Definition
partially selective D3 agonist
Term
MOA of tropolone:
Definition
inhibits COMT
Term
MOA of AMPT
Definition
inhibits tyrosine hydroxylase and dopamine synthesis
Term
MOA for most antipsychotics:
Definition
blocks D2 receptors
Term
MOA for ariprazole
Definition
partial D2 agonist
Term
MOA of bromocriptine
Definition
D2 agonist
Term
MOA of NRI and SNRI:
Definition
antidepressants inhibiting the norepinephrine transporter
Term
Prazosin MOA
Definition
alpha 1 antagonist
Term
MOA of MAOIs:
Definition
antidepressant inhibits MAOa
Term
MOA of Clonidine:
Definition
alpha 2 agonist
Term
biosynthetic pathway of serotonin:
Definition
tryptophan to 5-hydroxytryptophan to serotonin to 5-HIAA
Term
MOA of many antipsychotics:
Definition
5HT2a
Term
MOA of ondansetron
Definition
5ht3 antagonist
Term
MOA of buspirone:
Definition
partial agonist of 5HT1A
Term
MOA OF PCPA:
Definition
inhibits tryptophan hydrolase and serotonin synthesis
Term
MOA of -triptans (antimigraine meds)
Definition
5HT1D
Term
What stimulates the syntehsis nad secretion of melatonin?
Definition
Beta 1 receptors on the pinealoytes (alpha 1 receptors help facilitate the response)
Term
melatonin receptor inhibited by melatonin:
Definition
MT3
Term
T/F botulinus and tetanus toxins inhibit ACh release, but black widow spider toxin stimulates release
Definition
TRUE
Term
Murare and mecamylamine are antagonists at what receptor?
Definition
nicotinic (antagonists)
Term
order of increasing impact on CNS function of anxiolytics, hypnotics, neuroleptics, anesthetics, and euthanasia
Definition
Anxiolytic ~ Tranquilizer (Minor) ~ Sedative < Neuroleptic (Major Tranquilizer) < Hypnotic < Anesthetic < Euthanasia agent
Term
rolling stones song about sedative hypnotics:
Definition
mother's little helper (little yellow pill, probably valium/diazepam)
Term
Examples of some benzodiazepines:
Definition
Chlordiazepoxide (LIBRIUM)
Diazepam (VALIUM)
Clorazepate (TRANXENE)
Oxazepam (SERAX)
Alprazolam (XANAX)
Estazolam (PROSOM)
Flurazepam (DALMANE)
Term
Benzo pro-drug example:
Definition
clorazepate (TRANXENE)
Term
Benzodiazepine Antagonist that can produce abstinence syndrome if patient has developed a physiological dependence:
Definition
Flumazenil (romazicon)
Term
T/F The alpha1 subunit containing GABA receptors (BZ1 omega1 binding site) are associated with sedation and amnesia
Definition
true
Term
T/F Non alpha1 subunit containing GABA receptors (BZ2 omega2 binding site) may be associated with muscle relaxation and anxiolysis
Definition
true
Term
MOA of baclofen (lioresal)
Definition
an antispasmodic that is a GABAa agonist (coupled to Gi)which opens a K channel and hyperpolarizes cells
Term
MOA of gabapentin (neurontin):
Definition
used primarily as an antiepileptic drug not a GABA agonist may promote GABA release may help with spasms of Multiple Sclerosis
Term
Sedative hypnotic skeletal muscle relaxants for fibromyalgia or restless leg syndrome:
Definition
pregabalin (lyrica)
also, the antidepressants amitriptyline (elavil) and fluoxetine (prozac)
Term
Examples of Z drugs:
Definition
Zolpidem (AMBIEN)
Zaleplon (SONATA)
Eszopiclone (LUNESTA)
Zopiclone (IMOVANE) Canada not US
Term
MOA of Z drugs:
Definition
Bind to the benzodiazepine binding site of the GABA receptor; more selective than benzos by binding only to the alpha 1 and gamma 2 subunit (BD1 ω1 binding site) associated with sedation and amnesia
Term
MOA of flumazenil:
Definition
Will compete with Z drugs for the BD1 omega1 binding site and counteract their effects
Term
Examples of barbiturates:
Definition
phenobarbital(nembutal), thiopental,
Term
barbiturates:
Definition
Rarely used as sedatives, bind to GABAa,
Still used as hypnotics e.g., thiopental and anticonvulsants, e.g., phenobarbital
Term
example of an Azaspirodecanediones which is used as a therapy for anxiety:
Definition
Buspirone (BUSPAR), a partial 5HT1A agonist with no GABAa interaction
Term
T/F Histamine acts on the NMDA receptor to enhance responses to glutamate
Definition
true
Term
T/F The first antipsychotic chlorpromazine is a derivative of the antihistamine promethazine
Definition
true
Term
T/F Beta blockers like propranolol can be used for performance anxiety
Definition
true
Term
Example of melatonin analog:
Definition
Ramelteon (ROZEREM) (don't use with cyp inhibitors or in hepaticcally impaired)
Term
T/F GABAA receptor is a major site of action of sedative-hypnotic drugs because they facilitate the inhibitory actions of GABA
Definition
true
Term
T/F benzo activity can be sustained for long durations via formation of active metabolites
Definition
true
Term
T/F Tolerance to the therapeutic effects of Benzodiazepines can occur through
down regulation of BD binding sites
Definition
true
Term
song about alcohol by TOm T Hall, Garth brooks and george jones, and brad paisley:
Definition
I like beer, Beer Run, alcohol
Term
T/F 30% of hospital admissions are due in some way to alcohol
Definition
true
Term
what is the 2-step process that is the metabolism of ethanol?
Definition
ethanol is acted on by ADH to form acetaldehyde which is then aldehyde dehydrogenated to acetate
Term
T/F At high concentrations > 100 mg/dL or with chronic high consumption the mixed function oxidases of the liver will metabolize ethanol
Definition
true
Term
metabolism of ethanol follows what type of kinetics?
Definition
zero order (7-10 g/hr)
Term
MOA of acute ethanol consumption:
Definition
CNS effects caused by Potentiation of GABA at GABAA receptor to cause Mild euphoric state; Impairs NMDA receptor responses to glutamate and cause Blackouts; decreases catecholamines and decreases contractility in the heart; causes relaxation of muscles
Term
teratogenic effects of alcohol:
Definition
Mental retardation
Intrauterine growth retardation
Movement disorders
Heart defects
Facial anomalies 1st trimester
Flattened features (thin upper lip)
Term
T/F you can decrease acute withdrawal symptoms from alcohol with benzodiazepines (diaxepam, lorazepam, oxazepam) or beta blockers like propranolol
Definition
true
Term
Opiod receptor antagonists that can eliminate the rewarding properties of ethanol:
Definition
Naltrexone (REVIA)
Naltrexone (VIVITREX)
Term
T/F Many asians have a
deficiency in Aldehyde
Dehydrogenase and have
reactions to ethanol as if
on disulfiram
Definition
true
Term
MOA of Acamprosate (CAMPRAL) for tx of alcohol dependency:
Definition
Structural analog of GABA
May interact with both GABA and glutamate receptors
“restores the balance of excitatory and inhibitory neurotransmission”
Can be used with disulfiram
Can be used with naltrexone
Helps maintain abstinence
Does not seem to help
to initiate abstinence
Term
tx ethylene glycol (safe antifreeze) toxicity by:
Definition
Inhibit ADH to prevent formation of toxic metabolites with Fomepizole or Ethanol
Term
examples of injectable anesthetics:
Definition
Barbiturates
Benzodiazepines
Propofol
Etomidate
Ketamine
Medetomidine and other alpha2 adrenergic agonists
Combinations (Neuroleptanalgesia, Conscious sedation )
Term
Characteristics of injectable anesthetic agents:
Definition
Rapid onset
Short acting
Used for induction prior to intubation for inhalation anesthesia
Fully efficacious
Often used in combination
Term
MOA of Thiopental (Pentothal, sodium Pentothal)
Definition
a barbiturate tat binds to the GABAa receptor and is an injectable anesthetic
Term
MOA of Midazolam (VERSED):
Definition
benzodiazepine IV product used as a pre-operative anesthetic/anxiolytic, binds to GABAa
Term
MOA of Propofol (DIPRIVAN), an injectable anesthetic
Definition
Acts on GABAA receptor:
Prolongs channel open time
Can be agonist on its own
causes "less barfing"
Term
MOA of Ketamine (KETALAR) (IV) dissaciative anesthetic:
Definition
NMDA receptor antagonist
Acts at PCP binding site psychotomimetic
Also subject to abuse
Special K, vitamin K, Kit-Kat
Bumpy re-emergence
Other sites of action
Nicotinic receptor
DO NOT USE WITH HEAD TRAUMA
Term
MOA of Medetomidine (DOMITOR) an injetable anesthetic agent"
Definition
alpha2 adrenergic agonists IM, SC or IV
; Inhibits locus coeruleus; Analgesic actions at the level of the spinal cord; reversed by Atipamezole (ANTISEDAN)
Yohimbine (YOBINE)
Term
what is Neuroleptanalgesia?
Definition
a state of quiescence, altered awareness, and analgesia produced by a combination of an opioid analgesic and a neuroleptic.
Term
gas anesthesia was discovered by _________after he observed ether frolics
Definition
crawford williamson long
Term
Examples of gaseous anesthetics:
Definition
Ether (is explosive); nitrous oxide (MAC over 100%); Halothane (liver tox); Fluranes
Term
Goals of local anesthetics
Definition
block pain transmission, fast onset of action, long duration
Term
MOA of local anesthetics:
Definition
block electrical conduction of nerve impulses along axons.
Dependent on voltage-gated sodium channels (NaV); Depolarization of adjacent membrane causes opening of the sodium channel; Action potential is sustained along the length of the axon
Term
T/F C fibers are smaller than Adelta fibers and easier to block
Definition
true
Term
T/F Local anesthetics bind to the inside of sodium channels
They must cross the neuronal membrane as uncharged lipophilic molecules
Once inside neurons they become charged (ion-trapping) at intracellular pH
Definition
true
Term
T/F when giving local anesthetics, you can add sodium bicarbonate to alkalinize area to increase the proportion of uncharged state of the local anesthetic to increase the rate at which it penetrates the nerves.
Definition
True
Term
severe seizures due to local anesthetics can be treated with:
Definition
barbs or propofol
Term
T/F Many local anesthetics are sodium channel blockers, and as such are Class I antiarrhythmics and can be arrhythmogenic in a normally beating heart.
Definition
true
Term
Types of anti-seizure drugs:
Definition
Sodium channel blockers
GABAA receptor facilitators
Glutamate receptor antagonists
Some also block calcium channels
Term
types of convulsant drugs:
Definition
GABAA receptor inhibitors
Glycine antagonists
Sodium channel facilitators
Local anesthetics
Term
benzodiazepines for acute status epilepticus
Definition
diazepam (valium), clonazepam (klonopin), chlorazepate (tranxene), lorazepam (ativan)
Term
phenobarbital (nembutal) is a barbiturate that treats:
Definition
chronic seizures and acute emergencies
Term
primidone is:
Definition
a precursor or phenobarbital that is an anticonvulsant with a high incidence of hepatotoxicity and has active metabolites
Term
T/F you can use barbiturates in people with hepatic impairment
Definition
FALSE
Term
examples of bromide anticonvulsants
Definition
potassium bromide, sodium bromide (both used in animals) MOA: mimic chloride ions and cause hyperpolarization in cells
Term
Hydantoins are use-dependent sodium channel (NAv) blocking antiseizure medications that treat:
Definition
generalized seizures (tonic-clonic) and partial seizures; ex. Phenytoin (dilantin
Term
examples of hydantoin anti-seizure medications:
Definition
phenytoin, mephenytoin, and fosphenytoin (prodrug)
Term
MOA of carbamazepine (tegretol)
Definition
use-depenent sodium channel blocker that is an anticonvulsant and also tx for bipolar disorder
Term
Oxcarbazepine (trileptal) is an anticonvulsant that works by:
Definition
prodrug with active metabolites that causes sodium channel blockade
Term
MOA of the anticonvulsant Vigabatrin
Definition
Gaba-T inhibitor, blocks coversion of GABA to glutamate
Term
Lamotrigine (Lamictal) MOA
Definition
Na channel blocker for partial seizures or bipolar disorder
Term
MOA of Gabapentin (neurontin)
Definition
gaba analog that may increase gaba release and is Cav antagonist
Term
Levetiracetam (Keppra)
Definition
tx partial seixures, inhibits synaptic release of gutamate, causes synaptic release of GABA, inhibits Cav
Term
Topiramate (topamax)
Definition
blocks NAv and CAv, allosteric modulator of GABAa, inhibits Kainic acid receptor subtype of glutamate receptors, tx partial/generalized seizures and migraine
Term
Zonisamide (zoneran)
Definition
Nav blocker, sulfonamide, partial/general seizures
Term
Ethosuximide (zarontin)
Definition
tx petit mal seizures; inhibits t-type Cav channels, targets thalamic neurons
Term
Valproic acid, sodium valproate (DEPAKENE)
Definition
Treatment of absence seizures >> partial seizures
Treatment of infantile spasms
NaV blockade prolongs inactivated state
NMDA receptor blockade
GAD activator
More GABA synthesis
Inhibition of GAT-1
Inhibition of GABA-T
High concentrations only
Idiosyncratic liver toxicity – monitor liver enzymes!
Also used for bipolar disorder and migraine prevention
Term
trimethadione (tridione)
Definition
tx absence seizures, inhibits t-type Cav
Term
schizophrenia is most often treated with
Definition
d2 antagonists
Term
three classical types of antipsychotics that are major tranquilizers/neuroleptics
Definition
Phenothiazines chlorpromazine THORAZINE
Butyrophenones haloperidol HALDOL
Thioxanthines thiothixene
Term
newer, atypical antipsychotic agents:
Definition
Clozapine CLOZARIL
Olanzepine ZYPREXA bipolar too
Risperidone RISPERDAL
Quetiapine SEROQUEL
Ziprasidone ZELDOX
Aripiprazole ABILIFY
Term
MOA of phenothiazines
Definition
Phenothiazines are D2 and D4 receptor antagonists. They block the effects of dopamine on this receptor in the brain. Phenothiazines also have moderate alpha1 adrenergic, 5HT2 serotonergic, muscarinic and H1 histamine receptor antagonistic properties
Term
T/F butyrophenones are more potent than phenothiazines as antipsychotics.
Definition
true
Term
examples of nutyrophenones (antipsychotics which are also anti-emetics)
Definition
haloperidol(haldol) and droperidol with fentanyl (innovar)
Term
MOA of butyrophenones:
Definition
The butyrophenones are D2 (and D4 ?) receptor antagonists.
They also block the effects of dopamine on this receptor in the brain.
Also have moderate 5HT2 serotonin, and alpha-1 adrenergic receptor antagonistic properties.
Term
AEs of butyrophenones
Definition
cause motor disturbances, parkinson's-like disease, tardive dyskinesia, increase prolactin, causes hypotension
Term
droperidol and fentanyl (innovar) drug classes
Definition
a neuroleptic with an opiod agonist
Term
T/F At high doses neuroleptics produce catalepsy, which may be part of the reason that neuroleptanalgesia works so well for surgery
Definition
true
Term
Clozapine, an atypical antipsychotic, works by
Definition
binding to D4 receptor, very potent anti-psychotic, but it causes agranulocytosis
Term
Olanzapine (zyprexa) is an atypical antipsychotic and:
Definition
has a benzodiazepine nucleus, is associated with severe weight gain and dyslipidemia and may cause T2 DM
Term
atypical antipsychotics often target
Definition
dopamine receptors or 5HT2a receptors
Term
Propensity of newer anti-psychotics to cause diabetes mellitus:
Definition
Olanzepine >> risperidone ~ quietipine ~ clozapine > ziprasidone ~ aripiprazole ~ haloperidol
Term
T/F Aripiprazole may work in Alzheimer’s patients who have delusions and hallucinations
Definition
true
Term
T/F Long-acting injectable risperidone may be best for minimizing impairment of cognitive function
Definition
true
Term
T/F Paliperidone (a metabolite of risperidone) has no antagonistic activity at cholinergic receptors, it has low potential for anticholinergic adverse effects, including cognitive dysfunction
Definition
true
Term
new drug being developed for L-dopa-induced psychosis
Definition
Pimavanserin, an inverse agonist of 5HT2a
Term
MOA of lithium as an anti-manic
Definition
substitutes for sodium in cells and inhibits PLC pathway
Term
cannabinoid receptors
Definition
CB-1 brain GPCR GI linked most in brain
Presynaptic inhibits GABA and glutamate release
Term
Phenytoin MOA
Definition
sodium channel antagonist broad range of efficacy
Term
Ethosuximide
Definition
first line for absence seizures
Term
GABApentin
Definition
calcium channel block
Term
parkinson's can be caused by:
Definition
env. factors like rotenone, tricloroethylene, manganese; illicit drugs like MPTP; licit drugs like reserpine and antipsychotics
Term
methadone MOA
Definition
NMDA antagonism and inhibits MAO reuptake
Term
Pentazocine (Talwin) is an opiod analgesic that:
Definition
is a kappa selective agonist and causes dysphoria
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