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173 Cards in this Set

  • Front
  • Back
Lispro, aspart

Soluble or regular insulin

NPH

Ultralente

Glargine
Ultra Rapid

Rapid Acting

Intermediate acting

Slow

Ultraslow peakless
Sulfonylureas
1st gen – Tolbutamide, Chlopropamide
2nd gen – Glyburide, Glipizide
 Stimulate insulin release from the pancreas
 Requires β cell for action
 Binds to ATP-sensitive K+ channel ↓ its conductance → mimic normal insulin secretion from pancreas
 Effectively absorbed through the GI tract
 T2DM therapy Risk of inducing hypoglycemia → can progress to coma & death
 Very long half life
 Stimulates appetite → contribute to obesity problem
Glitinides
 Repaglinide
 Nateglinide
 Similar action to sulfonylureas
 Very rapid-acting & short duration
 Take orally @ mealtimes
 ↓ post prandial peak in blood glucose
 Flexible dosing
Biguanides
 Metformin (Glucophage)
 Lowers blood glucose levels
 Does not stimulate insulin release

2 main actions:
 ↓ gluconeogenesis - ↓ glucose output from liver
 ↓ insulin resistance - enhanced insulin action on peripheral tissues
 T2DM
 NO risk of hypoglycemia
 Associated anorexia may lead to weight loss
 May be used in combo w/ sulfonylureas
 GI disturbances: Lactic acidosis:
o Potential fatal lowering of blood pH
Thiazolidinediones (TZDs) or Glitazones
 Rosiglitazone (Avandia)
 Pioglitazone (Actos)
 Troglitazone
 Potentiates insulin action on peripheral tissue
 ↓ insulin resistance
 Does not stimulate insulin release
 Agonistic binding of peroxisomal proliferator activator receptor (PPARγ) found in white adipocytes
 T2DM
 NO risk of hypoglycemia
 Useful following failure of sulfonylureas and/or metformin or in combo
 Edema; CI in pts w/ CVD
 Potential hepatoxicity
Incretins
 Oral glucose induces release of gut hormone GLP-1 → acts on β cell to amplify insulin release
Exenatide (Byetta)
 Newly approved GLP-1 analog from reptilian salivary glands
 Longer half life than endogenous form
 Resistant to DPP-4 protease turnover
 Induces insulin release
 Depress glucagon releases
 Blunt post-prandial glucose surge
 Delays gastric emptying T2DM
 SubQ injection
 Significant weight losses through blunting of appetite
 Nausea
 ↑ risk of hypoglycemia when used in combo w/ sufonylureas
DDP-4 Inhibitors
 Sitagliptin
 Newly approved
 ↑ half life & action of endogenous GLP-1
 T2DM
 PO drug
 No associated GI disturbances No effect on weight loss
 Possible toxicities
α-Glucosidase inhibitors
 Acarbose
 Miglitol
 ↓ intestinal absorption of glucose
 Slows intestinal degradation of starches & sucrose
 Blunt post prandial spiking of blood glucose levels
 T2DM
 Not effective as 1o therapy
 May be used w/ other drugs
 Flatulence
 diarrhea
Levothyroxine
T4
LiothyronineNA
T3
Thioureylenes
-Methimazole
propulthiouracil
Inhibit tyrosyl iodination vs competitive inhibition on thyroid perox.
takes several weeks to months due to large store and slow turnover of t3/t4
High dose Iodide
Lowers hyperthyroid only intially used presurgically reduces size and vascularity
Proponolol for hyperthyroidism
Sx relief (tachy card, arryth, tremor)
Used during lag period whcih follows thioureylene therapy.
Prednisone
Liver to act --> prednisolone
SE: Cusingoid appearance/ lethal infections.
Think skin,moon face, cataracts, atheroscler, Osteoporosis (osteoblast inh lower ca uptake and inc. excretion)
Immunophinin binding agents (IL-2 inhib)
Calcinuerin inhibitors
Cyclosporin (binds cyclophins can block mitogen induced act of synovial monnuc cells)
Tacrolimus(binds FKBPs lower IgE mediated resp)

Immunosup effects come from binding and inhibiting calcinuerin phosphatase inhibiting action of NF-AT.
1) T-helper
2) variable bioavailability (monitor)
3)p450/ needs bils salt for abs
Non calcinuerin inhibiting agent: sirolimus
Binds immunophillins, interferes w/ signal transduction via TOR.
Limits growth factor induced prolif
SE: dyslipidemia, thrombocytopenia, antifibroblast action p450 same as tacro/cyclosporin
Azathioprine
Abs. by liver X.O.
-->6-MP lowers purine synth -->IL-2
Maintain organ tx.
SE: mylosupression, anemia, alopecia, lethal w/ Allopurinol(blcoks XO)
Methotrexate (PS/RA)
Structural analog folic acid irrev.
effects DHFR--> effects purine/pyrimidine synth
SE- Allopecia, CNS fatigue, GI
Cyclophosphamide (SLE, Wegeners, RA)
Metab in liver -> 4OHphosphamide+aldophosphamide(active)
bind to enz od DNA- interfere
Drug interactions
1) w/ sux up NM blockade due to lowering of psudeoCHE
2)alter hepatic microsomal enz act will alter cyclophosphamide levels
3)TC antidepressents may decrease bladder emptying and lead to prolonged bladder exposure to acrolein (hemmorhagic cystitis)
Se: alopecia, anorexia, diarrhea.
Mycophenolate Mofetil
Lympo specific due to inhib of de novo purine pathway. Inhibits IMPD lowering guanosine monophosphate adn increase adenosine (inhibits the PRPP).
Leflunomide
Inhibit pyrimidine synth.
Inhibit dihyroorate dehydrogenase
Effective w/ Myco. Mofetil.
SE: liver, kidney, tetragenic
 3 factors that contribute to airway narrowing in asthma:
o smooth muscle contraction
o ↑ mucous secretion
o mucosal inflamm & swelling
Early onset/Extrinsic Asthma
 occur mostly in children and young adults
 family hx common
 (+) skin hypersensitivity test

Pathogenesis:
 abnormal immune response associated with allergy
 IgE, mast cell and Ca2+ mediated factor release (histamine, 5HT, Leuk)
 Leuk can recruit more inflamm cells to airway
 Therapeutic target is Ca2+ & cAMP mediated degranualtion
Late onset/Intrinsic Asthma
 Can occur at any age but most are adult pts
 provoked by cold air, perfume, paint, tobacco smoke
 Emotional stress, infection, severe exertion
 no family hx
 (-) skin hypersensitivity test

Pathogenesis:
 ↓ β-adrenergic responses
o β2 receptor esponse normally relaxes bronchial muscle & ↓ gland secretion
 ↑ cholinergic responses
o Muscarinic receptor response normally contracts bronchial muscle & stimulates gland secretion
Bronchodilators
 inhibit smooth muscle contraction and ↓ release of mediators
 can rapidly reverse bronchospasm
 β2 agonist binding → Gs protein activation → activation of AC → ↑ cAMP
o ↓ active form of MLCK = less smooth muscle contraction = bronchodilation
o ↑ cAMP affects cAMP:cGMP ratio = ↓exocytosis of chemical mediators = ↓ bronchial gland secretion
 α receptor activation → IP3 stimulated Ca2+ release from ER → constrict bronchial mucosal vessel & ↓ blood flow → ↓ congestion & edema
Albuterol
(salbutamol
 short-acting
 racemic mixture
B2 agonist selective
Levalbuterol
 short-acting (R-isomer)

FDA approved for:
 prevention and txmt of bronchospasms in pt at least 12yo
 useful in pt refractory to racemic mixture of albuterol
Selective β2 agonists
Pirbuterol
 short-acting
Selective β2 agonists
Formoterol
 long-acting

FDA approved for:
 maintance txmt
 prevention of exercise-induced bronchospasm
Selective β2 agonists
Xanthines-Theopylline
 Stage I (mild asthma w/ little obstruction )
 PO: Stage II (moderate obstruction)
 IV: Stage III (severe obstruction) & Stage IV (marked hypoxemia)
 ↑ cAMP by diff route than β2 agonist
 inhibits the actions of phosphodiestease
 can be used as synergistic therapy
SE: Narrow therapeutic window → must monitor carefully
 plasma conc > 25 ug/ml
o high probability of seizure
o arrhythmia, hypotension, cardiac arrest
 Adverse effect: N/V

Drug interaction/Toxic effect:
 Babituates → speed rate of elimination & interfere with blood level
 Caffeine → competes w/ common metabolic enzyme & CNS/ CV effects
Inhaled corticosteroids
 Budesonide
 Fluticasone

 Beclomethasone
 Triamcinolone
 Propionate
 Mometasone furoate
 Flunisolide
Fluticasone & Budesonide:
 preferred agents bc their long duration of action & high local potency w/ less systemic effects indirectly act on to relieve or prevent airflow obstruction

***have NO effect on IgE-dependent secretion of mediators

 suppress hypothalamic-pituitary-adrenal fxn
o cushion’s syndrome
o growth retardation
 if ↓ suddenly → danger of no recovery of adrenal fxn and poor response to stress
 SEs more prevalaent w/ systemic administration than inhalants
 Prednisone
 Prednisolone
Oral Corticosteroids
 PO or IV
 dramatic relief in severe asthma – stage III and IV
 not effective in inhibiting IgE mediated release
 thought to stabilize biomembrane
 inhibit inflammatory rxt
 enhance response of B receptor to adrenergic transmission
Cromolyn Sodium
Oral Corticosteroid
 used extensively for prophylactic tx of mild to moderate asthma  stabizes membrane of mast cell to prevent release of mediators
 probably block Ca channel
 inhibit Ca influx across mast cell membrane  does not relax smooth muscle
 NOT to be used for acute bronchospasm
 Few SEs → sore throat, dry mouth, skin rash, head ache, dizziness
Alprostadil (PGE1)
 Still in experimental stages, not yet in clinical use  activate AC → ↑ cAMP
 have effects on airway smooth muscle relaxation
Anticholinergenic Asthma agents
Anticholinergic agents
 Historically Atropine was used to treat bronchial asthma but have severe cholinergic SEs
 w/ the availability of β agonists these anticholinergic agents are no longer used to treat bronchial asthma ***KNOW THIS***
 inhalational analogs may used for chronic bronchitis & COPD
 Ipratropium bromide
o Short acting bronchodilator for patients with chronic bronchitis and COPD
 Tiotropium bromide
o Long acting anti-cholinergic drug approved by FDA for once-daily txmt of bronchospasm associated with COPD
Zileuton
affect the allergic reactions upstream of inflammatory cascade
 Not used anymore
 Freq doses req for effectiveness  Leukotriene synthesis inhibitor 
Zafirleukast
affect the allergic reactions upstream of inflammatory cascade
 Not used anymore  Leukotriene synthesis inhibitor  Interacts w/ food in the stomach
Montelukast (Singular)
affect the allergic reactions upstream of inflammatory cascade
 PO drug
 Used for asthma, seasonal allergic rhinitis and perennial allergic rhinitis in adults & children  Cysteinyl Leukotriene D4 receptor antagonist
Omalizumab (Xolair)
affect the allergic reactions upstream of inflammatory cascade
 SQ
 Used for pts at least 12yrs old
 Moderate to sever asthma  Inhibits IgE
Xanthines
Theopylline
Theopylline
Stage I (mild asthma w/ little obstruction )
PO: Stage II (moderate obstruction)
IV: Stage III (severe obstruction) & Stage IV (marked hypoxemia)
↑ cAMP by diff route than β2 agonist
inhibits the actions of phosphodiestease
can be used as synergistic therapy
NarrowSE: therapeutic window → must monitor carefully
plasma conc > 25 ug/ml
o high probability of seizure
o arrhythmia, hypotension, cardiac arrest
 Adverse effect: N/V

Drug interaction/Toxic effect:
Babituates → speed rate of elimination & interfere with blood level
Caffeine → competes w/ common metabolic enzyme & CNS/ CV effects
Methimazole
Thiourelene
Inhibit tyrosyl iodination vs competitive inhibition on thyroid perox.
takes several weeks to months due to large store and slow turnover of t3/t4
Glipizide
2nd gen Sulfonylureas
Stimulate insulin release from the pancreas
Requires β cell for action
Binds to ATP-sensitive K+ channel ↓ its conductance → mimic normal insulin secretion from pancreas
Effectively absorbed through the GI tract
Risk of inducing hypoglycemia → can progress to coma T2DM therapy & death
Very long half life
Stimulates appetite → contribute to obesity problem
Glyburide
2nd gen sulfonylureas
Stimulate insulin release from the pancreas
Requires β cell for action
Binds to ATP-sensitive K+ channel ↓ its conductance → mimic normal insulin secretion from pancreas
Effectively absorbed through the GI tract
Risk of inducing hypoglycemia → can progress to coma T2DM therapy & death
Very long half life
Stimulates appetite → contribute to obesity problem
Tolbutamide
1st gen Sulfonyurea
Stimulate insulin release from the pancreas
Requires β cell for action
Binds to ATP-sensitive K+ channel ↓ its conductance → mimic normal insulin secretion from pancreas
Effectively absorbed through the GI tract
Risk of inducing hypoglycemia → can progress to coma T2DM therapy & death
Very long half life
Stimulates appetite → contribute to obesity problem
Chlopropamide
1st gen Sulfonyurea

Stimulate insulin release from the pancreas
Requires β cell for action
Binds to ATP-sensitive K+ channel ↓ its conductance → mimic normal insulin secretion from pancreas
Effectively absorbed through the GI tract
Risk of inducing hypoglycemia → can progress to coma T2DM therapy & death
Very long half life
Stimulates appetite → contribute to obesity problem
Norepinephrine (levarterenol
ADRENERGIC AGONISTS
Direct Acting

mostly α agonist, some β1 vasoconstrict = ↑systolic and diastolic BP, reflex ↓HR. Maybe tx for shock; NEVER used for asthma
▫Isoproterenol
ADRENERGIC AGONISTS
Direct Acting

β1& β2 agonist, synthetic ↑↑HR, contraction = ↑CO = tx. AV block or cardiac arrest; dilates dilates sk. musc. aa = ↓BP
Up Sys down Dias can lower CO if pooling of blood too much
Dobutamine
ADRENERGIC AGONISTS
Direct Acting

β1> β2 agonist used to ↑CO in congestive heart failure w/o affecting HR or myocardial O2 demands ↑atrial conduction, so beware if pt. has atrial fibrillation
Phenylephrine
ADRENERGIC AGONISTS
Direct Acting

α1>α2 agonist, synthetic ↑syst & diast BP w/o effect on heart, but causes reflex bradycardia; also nasal decongestant, mydriatic, shock not catechol derivative, so not substrate for COMT
Methoxamine
ADRENERGIC AGONISTS
Direct Acting

α1>α2 agonist vasoconstricts →↑peripheral resistance; has good effect on vagus = tx for supraventricular tachycardia or to overcome hypotension induced by halothane in surgery
▫Clonidine(catapress)
ADRENERGIC AGONISTS
Direct Acting

α2 agonist tx. HTN, or to minimize withdrawal from opitates/benzodiazos sudden withdrawal = HTN crisis; drymouth is very common side effect
▫Methyldopa(aldomet)
ADRENERGIC AGONISTS
Direct Acting

α2> α1> β met. by DD, then DBH to α-methyl NE, which has ↓affinity for , but for ; stored and released with NE; controls CNS and JG of kidney to ↓renin = ↓BP penetrates BBB
▫Terbutaline, ▫Albuterol, ▫Ritodrine
ADRENERGIC AGONISTS
Direct Acting

β2 agonist bronchodilator, or ↓ uterine contractions in premature labor

also ▫Orciprenaline
Dopamine
ADRENERGIC AGONISTS
Direct Acting

activates β1 in heart = ↑CO, at high dose, activates α = vasoconstriction; dilates renal and splanchnic BVs via D receptors = independent of adrenergic action = tx. shock much better than NE b/c NE blocks blood to kidney and may lead to kidney shutdown
Cocaine
Indirect Acting
reversibly binds NET = potentiates NE and Epi = CNS stimulation; has local anesthetic action @ high doses
▫Amphetamine
Indirect Acting
branched chain = high affinity for MAO, but poor substrate accum. in nerve release of NE non-exo = tx for narcolepsy & ADD; but OD=psycho, BP, angina, arrhythmia; lasts 3 hrs crosses BBB, CNS arousal, tolerance dev. to amphets “tachyphylaxis”
Tyramine
Indirect Acting
decarboxylation of tyrosine, found in wine/cheese, given IV accum. by NET in neuronrelease of NE, causes dose-dep HR, BP, resembles NE; lasts 3 minutes NO BBB, Ca independent, substrate for MAO = don’t give w/ MAOIs, delays oxidation of NE
tricyclic antidepressants
Indirect Acting
(imipramine, desipramine, amitryptyline) very potently block NET, also block 5HT, and at high conc, block receptors for muscarinic, histamine and 1 cause tremor, insomnia, blurry vision, orthostatic HTN
Ephedrine
Direct and Indirect Acting (Mixed)
similar to amphet, but has adrenergic effects too. 3hrs tx. asthma; mydriatic; decongestant OD=confusion, anxiety, BP, angina, arrhythmia, ↓appetite, ↓sleep
Metaraminol
Direct and Indirect Acting (Mixed)
has actions similar to NE; tx. shock or HTN
Phenoxybenzamine
ADRENERGIC ANTAGONISTS
Alpha Blockers
irrev. & noncomp. blocks all alphas, ACh,5HT,histamine prevents vasoconstriction, reverses alpha effects of EPI; tx. pheochromocytoma, Raynaud’s disease adverse = postural hypotension, nausea, vomiting, may HR, impotence
Phentolamine
ADRENERGIC ANTAGONISTS
Alpha Blockers irrev. & noncomp. blocks all alphas same as phenoxybenzamine, may be used to dx pheochromocytoma, or to tx. HTN crisis after eating tyramine
Prazosin
ADRENERGIC ANTAGONISTS
Alpha Blockers comp. block α1 ↓peripheral resistance, ↓BP w/o affecting heart or kidney = good HTN tx.; tx. benign prostatic hypertrophy by  urine flow; ↓preload and afterload = tx. congestive heart failure prazosin often leads to edema = give with a diuretic; Doxazosin (Cardura) = newer analog w/ longer t1/2
▫Tamsulosin (flomax)
ADRENERGIC ANTAGONISTS
Alpha Blockers selective for α1a blocks a1a, which is all over prostate = tx. ben. pros. hypertrophy
Yohimbine
ADRENERGIC ANTAGONISTS
Alpha Blockers
blocks a2 only tx. for impotency (actual effectiveness is questionable.)
▫Propanolol
▫Carteolol, ▫Nadolol ▫Levobunolol, ▫Pindolol, ▫Timolol
▫Penbutolol
Beta Blockers
blocks b1 & b2 ↓HR, ↓force=↓CO; ↓conduction; blocks renin release = tx. HTN, angina and arrhythmias; also tx. coronary artery disease b/c blocks stress-induced demands for 02 by heart; useful to tx. heart probs in hyperthyroidism; tx. migraines, anxiety, glaucoma via ↓ prod of aq. humor. not for pts. w/ COPD or asthma; must withdraw gradually; NEVER use w/ verapamil or diltiazam = AV block
note: Pindolol doesn’t block renin, but is still good tx. for HTN
Acebutolol
▫Betaxolol, ▫Esmolol
▫Atenolol, ▫Metoprolol
Beta Blockers
blocks only b1 = cardiac selective remember A BEAM of b1 blockers
Labetelol
Alpha AND Beta Blockers
competitively blocks b1,b2,a1 (but not a2) tx. HTN w/ angina, pheochromocytoma; not as potent as individual  or  blockers; mem. stabilizer = local anesthetic action; also can block neuron uptake of NE = cocaine-like action
Guanethidine
(ismalin)
Synthetic, oral ↓BP, ↓HR, ↓renin; taken up by NET, blocks exocytosis independent of Ca: 1. enters neuron, blocks transmission (acute); 2. blocks NET (acute); 3. ↓NE stores (chronic)
Reserpine(serpasil)
alkaloid, oral, irreversible binding; no effects on cholinergics=parasymp tone progressive loss of NE tissue stores =↓↓↓autonomics; blocks NE transport; MAO oxidizes the NE; also blocks DA trans=↓ DA in brain; also ↓5HT from nerves, ↓histamine from platelets lasts 1 wk; also miosis, salivation, gastric sec., ↓HR, ↓BP, depression, diarrhea, peristalsis, tremor, suicide
alpha-methyl-tyrosine (metyrosine)
TH inhibitor, competes w/ tyrosine, blocks formation of DOPA = depletes NE stores. Former tx. for pheochromocytoma no longer used. Crystallizes out in urine = renal damage
Colchicine, Vinblastine & Vincristine (Vinca Alkaloids)
depolymerize cell cytoskeleton, block fast axonal transport = blocks NE from cell body going to synapse
Acetylcholine
AGONISTS
direct intracoronary injection to dx. vasospastic angina pectoris
▫Pilocarpine
AGONISTS
natural, tertiary, M -topical miotic for glaucoma
-tx. drymouth in cancer or Sjogren’s synd. (autoimmune salivary dysfxn)
▫Cevimeline (Exovac)
AGONISTS
M tx. for drymouth met. by CYP2D6 and 3A3/4= maybe toxic w/ ketoconazole etc
Methacholine
AGONISTS
synthetic, quaternary, M in heart -old tx for tachycardias
-aerosol to dx. bronchial hyperreactivity not met. by cholinesterases = longer duration than ACh
▫Carbamylcholine (Carbachol)
AGONISTS
synthetic, quaternary, M & N topical miotic agent not met. by AChE
▫Bethanechol (Urecholine)
AGONISTS

synthetic, quaternary, M in GI & UT -tx. stasis conditions of bladder or GI, esp. post-partum and after general anesthesia -not. met by cholinesterases
-don’t give if GI obstruction (P)
Nicotine
AGONISTS
natural, lipid soluble tertiary, N -leads to conversion from activation to depolarizing blockade
-tx. for nicotine withdrawal sx.
-maybe good for cognition in Alzheimer’s, ↓Parkinson’s
BEWARE acute poisoning = ANS stim, CNS excitation, convulsions, depression, sk. m. paralysis -crosses placenta, sec. in milk
-widely dist. in CNS
-highly addictive
▫Physostigmine (Antilirium)
REVERSIBLE CHOLINESTERASE INHIBITORS
natural, tertiary, M & N topical miotic for glaucoma met. by plasma ester hydrolysis
-can cause seizures
▫Neostigmine (Prostigmin)
REVERSIBLE CHOLINESTERASE INHIBITORS
synthetic, quaternary, N -Anticholinesterase AND agonist action = tx myasthenia gravis
-motility of GI or UT
-reverses sk. m. blockade by competitive antagonist (d-tubocurarine) -oral abs. 15X less than parenteral
met. by plasma ester hydrolysis
Pyridostigmine
REVERSIBLE CHOLINESTERASE INHIBITORS
same as neo, but longer duration = most common oral tx for myasthenia
Edrophonium
REVERSIBLE CHOLINESTERASE INHIBITORS
synthetic, quaternary -Anticholinesterase AND agonist action at motor endplate = systemic action is almost totally on sk. m. = diagnostic for myasthenia only lasts 5 min
Tacrine
REVERSIBLE CHOLINESTERASE INHIBITORS

not used much anymore -tx. cognitive sx. of Alzheimer’s (but not dementia) -crosses BBB, hepatotoxic
Donepezil
REVERSIBLE CHOLINESTERASE INHIBITORS
piperidine-based -tx. cognitive sx. of Alzheimer’s w/ long duration = once daily dose
milder side effects, no hepatotoxicity met. by CYP2D6 and 3A3/4
▫Rivastigmine (Exelon)
REVERSIBLE CHOLINESTERASE INHIBITORS
carbamate structure Alzheimer’s tx that is met. slower, also inhibits pseudoChE good if poor response to donepezil
▫Galantamine (Reminyl)
REVERSIBLE CHOLINESTERASE INHIBITORS

tertiary alkaloid Alzheimer’s Tx
Echothiophate
IRREVERSIBLE CHOLINESTERASE INHIBITORS (ORGANOPHOSPHATES)
very polar, exc. in urine, lipid soluble, so can be abs. thru skin
topical miotic agent for eye (effects last 3 days)
malathion
IRREVERSIBLE CHOLINESTERASE INHIBITORS (ORGANOPHOSPHATES)
very polar, exc. in urine, lipid soluble, so can be abs. thru skin
common home and garden insecticide, controls lice topically can be met. by mammals
Parathion
IRREVERSIBLE CHOLINESTERASE INHIBITORS (ORGANOPHOSPHATES)
very polar, exc. in urine, lipid soluble, so can be abs. thru skin
must first be conv. in liver to active form, paraoxon; only for pros is NOT met. by mammals
Sarin
IRREVERSIBLE CHOLINESTERASE INHIBITORS (ORGANOPHOSPHATES)
very polar, exc. in urine, lipid soluble, so can be abs. thru skin
“nerve gas” for war, terrorism
Atropine
MUSCARINIC ANTAGONISTS
natural alkaloid tx for motor symptoms of Parkinson’s
-can block vagal afferents to heart = tachycardia = tx. for sinus bradycardia after MI
-↓motility in GI, threshold volume for sensory micturation reflex
-sustained cyclopegia and mydriasis topically on eye “atropine flush” @ toxic levels
-mainly met. in liver, some exc. unchanged in urine
"Dry as a bone, red as a beet, blind as a bat, mad as a hatter"
Scopolamine
MUSCARINIC ANTAGONISTS
100X more potent than atropine in ascending reticular core =produces somnolence and hypnosis with amnesia
may produce delerium and hallucinations
-anti motion sickness (abs. thru skin well enough to give as patch)
Tolterodine
MUSCARINIC ANTAGONISTS
tertiary tx. for urinary urgency met. by liver
Oxybutinin
MUSCARINIC ANTAGONISTS
tertiary tx. for post-operative bladder spasm, also tx for urinary urgency met. by liver, available as patch
Tropicamide
MUSCARINIC ANTAGONISTS
tertiary short-duration mydriatic/cycloplegic topical on eye
Ipratropium
MUSCARINIC ANTAGONISTS
quaternary tx. as aerosol for COPD, asthma, etc…
Propantheline
MUSCARINIC ANTAGONISTS
quaternary spasmolytic for GI tract, tx. for GI hypermotility
▫Benztropine (Cogentin)
MUSCARINIC ANTAGONISTS
tertiary -tx parkinson’s motor sx.
Pirenzepine
MUSCARINIC ANTAGONISTS
tertiary, M1 under investigation for peptic ulcer. No heart side effects
▫d-tubocurarine
NICOTINIC COMPETITIVE ANTAGONISTS
natural alkaloid -↓BP initially due to: 1. ANS ganglia block, 2. Histamine from Masts t0.5=3.8hr, ½ met., ½ exc kidney
vecuronium
NICOTINIC COMPETITIVE ANTAGONISTS

synthetic, steroid-based slight ganglionic blockade can reduce GI tract motility, very popular
no histamine release biliary excretion
atracurium
NICOTINIC COMPETITIVE ANTAGONISTS
synthetic only a little Histamine release, intermediate duration of action
landanoside, a breakdown. product, may excite the CNS inactivated by spont. breakdown. since unstable at plasma pH = safe for renal and hepatic failure
doxacurium
NICOTINIC COMPETITIVE ANTAGONISTS
specific for neuromuscular jxn = few side effects, no Hist., long action exc. by kidney
mivacurium
NICOTINIC COMPETITIVE ANTAGONISTS
shortest duration, slow onset, only a little Histamine release met. by pseudoChE’s in plasma
Succinylcholine
DEPOLARIZING BLOCKERS
synthetic rapid onset, 5 min duration; significant hyperkalemia
best for relaxing laryngeal mm. to insert an airway pseudoChE met. to succinic acid and choline
some hist release
▫Trimethaphan (Arfonad)
GANGLIONIC BLOCKADE AGENTS
blocks early EPSP and thus ganglionic transmission
tx. HTN emergencies, or create hypotension for brain surgery
Hexamethonium
GANGLIONIC BLOCKADE AGENTS
quaternary amine possible HTN drug
Mecamylamine
GANGLIONIC BLOCKADE AGENTS
secondary amine possible use for nicotine-sensitive CNS disorders like Tourette’s
▫Botulinum Toxin A (Botox)
ACh RELEASE BLOCKERS
local injection to tx strabismus, torticollis, wrinkles, possibly migranes
Dantrolene
blocks Ca from sarcoplasmic reticulum. Used only for spasticity tx. in pts w/ upper motor neuron lesions, malignant hyperthermia
Cromolyn Sodium
Block Ca influx and release of hitamine.
Compound 48/80
Polymixin B
Ionophores result in influx of Ca release of hist
Morphine and Turbocurarine
Also stimulate histamine release
Dissoc histamine from heparin-chondotrin complex inside granules
H1 receptors
Smooth muscle of gut and bronchi, endothelium, and in brain PLC pathway
H2 receptors
Gastic mucosa and cardiac muscle cells, brain cAMP pathway
First Generation Antihistamines
Diphenhydramine
Dimenhydrinate
Chlorpheniramine
Hydoxazine
Meclizine
Promethazine
Second Generatin AntiHist
Fexfenadine
loratadine
cetirizine
Serotonin Clinc signficiance
Migraine and cluster headaches
Effects of Aluminum
Constipation
effects of Magnesium
Diarrhea
Antihistamines: (to reduce gastric acidity)
H2 Antagonists effective in healing of gastric and duodenal ulcers.
Dine w/ FRANC
Famotidine, Ranitidine, Nizatidine, Cimetidine
Famotidine
H2 Antagonists effective in healing of gastric and duodenal ulcers.
Ranitidine
H2 Antagonists effective in healing of gastric and duodenal ulcers.
Nizatidine
H2 Antagonists effective in healing of gastric and duodenal ulcers.
Cimetidine
H2 Antagonists effective in healing of gastric and duodenal ulcers.
Proton Pump Inhibitors
-prazole; activated in acid enviroment of secreteory canaliculus of parietal cell. Useful in gastric and duodenal ulcers, severe gastroesophogeal disease, and Zollinger-Ellisons
Somatostatin Analog
Octreotide
Somatostatin suppresses the release of gastrointestinal hormones
Gastrin
Cholecystokinin (CCK)
Secretin
Motilin
Vasoactive intestinal peptide (VIP)
Gastric inhibitory polypeptide (GIP)
Enteroglucagon
Sucralfate
Directly inhibits pepsin and bile action w/ out changing pH of stomach.Not an antacid. Coats ulcerbed
Bismuth Subsalicylate
Ulcer, coating, and protection from acid and pepsin.
Prostaglandins In GI
May prevent Gastric acid secretion by blocking histamine stim cAMP. Misoprostol is crug of choice esp when ulcers from NSAID.
Metoclopramide
Choinomimetic, increase resting ton eof lower esophageal sphinc. and stomach that makes the compoud useful in reflex esoph. accelerates gastric emptying and shortens bowel transit time. Dopamine antagonist so strong antiemetic properties.
Treatment H.pylori
2 ab w/ a proton pump inhbitor
= Amox, Clarithro+ propumpI
oor bismuth, metronidazole, h2 blocker, tetracycline
Apomorphine
Emetic Agent
potent DA agonist binds CTZ on 4th vent->Reticular Medulla
Vommiting Physiology
Sensor->CTZ (DA rec 4th vent)->reticular core medulla-> vomit
Inc pulse, salivation,dilation of pupils, pallor. contract of pylorus and relax of gi smooth muscle, tensing of abdominal and intercostal m, reverse paristalis in lower esophogus. After: reflex bradycardia, fall in bp, faintness.
Ipecac syrup
Stomach irritant and some direct CTZ action
Antiemetics
Most are Da Antagonists at CTZ
Chlorpromazine
prochlorperazine
trimethobenzmide
metochlopramide
ondansetron
Chlorpromazine
Antiemetics
prochlorperazine
Antiemetics
trimethobenzmide
Antiemetics
metochlopramide
Antiemetics
Dimenhydrinate
Anti motion sickness agent Block H1 receptor
anti histaminic and acts by blocking synaptic relay along 8th cranial nerve.
Castor Oil
TAG of ricinoleic acid from castor beans. Acid stimulates GI tract motility by irritant action from the small intest on. Premotes evac of small and large intest. Used prior to surgery should not be used during pregnancy may induce premature labor
Dipheylmethanes-phenolphthalein
motility stimulant
Emodin alkaloids
aloes cascara, senna stimulate peristalsis metabolized by bacteria.
Mineral Oil
Stool softener-promote laxation by coating and lubricating fecal matter, prevent norm absorption water.
Glyercerin
Administered as rectal supposityro, lubricate and produces local irriation of the rectum that helps initate defecation reflex
Opiates in Gi
Anti diarrheal-sustained contract of intesting and interrup normal seq of peristaltic contractions.
Diphenoxylate and atropine
Antidiarhetic
Loperamide
Inhib ach from presynaptic opiod recep. in ENS Antidiarrhetic motility agent
Absoben powders
absorb water and toxins to provide protective coating to inflamed intestine-kaolin,pectin,bismuth subsalicate
Aspirin(acetyl sialicylic acid)
Irreversible
Absorbed/accumulate in stomach lining
Metab by liver, 0 order @ pharm doses, excreted kidney
Inhibits cox 1> cox 2 irrevsibly acetylates enz.
Limitations- gastric irritation- inhibits cox 1 PG imp in mucin secretion
Percipitates gouty attacks, reyes syndrome, renal tox, allergy
OD: tinnitis, vertigo, hypervent ->resp alkalosis->metabolic acidosis tx to alk urine.
Acetameniphen (not nsaid)
Nonspecific cox inhibitor
Analgesic, antipyretic, not anti inflam.
can cause irrev hepatotoix/renal tox prompt treat w/ acetylcystine
Nonselective cox inhibitors- Antiinflam,analgesic,antipyretic
Ibuprofen, Naproxen, indomethacin
Ibuprofen, Naproxen (longer 1/2 life than ibu)
Milder GI effects than other cox inhibitors. rare hematological,renal comp.
Indomethacin
Powerful NSAID
SE: GI, ANemia,Coronary artery, Hyperkalemia
Used in gout short term, not in children unless ductus arteriosus
Celecoxib
Cox 2 inhibitor- reversible
Lower GI irritability
Increase Prothrombin time
High incidense of MI/sudden cardiac death
Misoprostol
Synthetic Prostoglandin, prevent ulcers when used w/ NSAID/ sever diarrhea +miscarrige
NSAID renal effect and DDI
lowers renal PH synth-> lowers BF->fluid retention
lowers effictivness of b-blockers, diuretics, ACE inhibitors, increases tosix effects of many drugs
Methotrexate
Standard for RA
Lymphocytes ( lowers cytokine prolife) PMN's (lower chemo, free rda)
Inhibit DHFR-> thymidine def
SE:GI, HEmatological,Hepatic, teratogenic
Hydroxychloroquinone
Malaria/Ameoba's (also RA)
Reduce chemotaxis,phagocyt,superox in PMN's
3-6 months
no mylosupression
not for G6PD def. monitor vision
Sulfasalazine
Inflam bowel disease/RA
split in GI-> Aminosialic acid+sulfapyridin (active)
SE:rashes, GI,photosen
NOT for G6PD
Leflunomide
Hepatic Metab to act p450 (used in RA)
Inhibit Dihydrorotate dehydrogenase
Pyrimidine def
Diarrhea, hair loss, Hepatic damage
Azathioprine
Converted to 6-MP
Inhibit purine synth
TNF-a Inhibitors
T(adal) N(et) F(lix)
Adalimumab- human Ig
Etanercept- TNF rec/ IgG Fc
Imfliximab- chimera human mouse anti tnf
SE: MS, Heart failure,SLE
Anakinra
IL-1 rec competitive antagonist
Abatacept
T lymp asoc Ag 4 +Fc
RA-inhibit T cell
Dont give w/ TNF inhitors-Infection
COPD pulm effects
Rituximab
RA-Chimeric Ab B cell cd20->apop
used w/ methotrexate when resist to TNF-a
SE: infusion reactions, act hep B, Viral infections
Gout
Xanthine->Hypoxanthine->uric acid(recurrent inflam)
Ibuprofin, Indomethacin Tx
Allopurinol
Inhibit XO, prevent attacks no relief. SE: skin rxn.Gi, marrow sup
Probenecid
Inhibit urate prox reabsorption
(asprin inhbits urate exretion raises gouty attacks)
SE: aplastic anemia, dermititis