EXAM #2: REVIEW Flashcards
What drug is used to prevent the adverse effects of high dose methotrexate?
Leucovorin
What are the unique adverse effects associated with Methotrexate?
Nephrotoxicity
Interstitial pneumonitis
What enzyme does 5-FU inhibit?
Thymidylate Synthase
What are the unique adverse effects associated with 5-FU?
Oral and GI ulcers
What is Capecitabine?
Oral 5-FU
What is disease is Cytarabine primarily used as a chemotheraputic agent for?
AML
What enzyme does Cytarabine require to be activated?
Deoxycytidine Kinase
What enzyme inactivates Cytatabine?
Cytidine Deaminase
What is the unique syndrome seen with Cytarabine? What are the symptoms?
Cerebellar Syndrome
- Ataxia
- Dysarthria
- Nystagmus
What enzyme activates Gemcitabine into its active form?
Deoxycytidine Kinase
What enzyme does Gemcitabine specifically inhibit?
Ribonucleotide Reductase
What enzyme do 6-Mercaptopurine and 6-Thioguanine require for activation?
HGPRT
What enzyme inactivates 6-Mercaptopurine?
Thiopurine Methyltransferase (TPMT)
What diseases are 6-MU and 6-TG commonly used to treat?
AML and ALL
What disease is Fludarabine used to treat?
CLL
What enzyme activates Fludarabine?
Deoxycytidine Kinase
What enzymes does Fludarabine specifically inhibit?
Ribonucleotide Reductase
DNA polymerase
Also inhibits mRNA translation
What disease is Cladrabine used to treat?
Hairy Cell Leukemia
What enzyme does Cladrabine specifically inhibit?
Ribonucleotide Reductase
What is the mechanism of action of Cyclophosphamine?
Nitrogen mustard DNA alkylating agent
What is the metabolite of Cyclophosphamine that is particularly harmful? What does it cause?
Acrolein–>Hemmorhagic cystitis
What drug is used to prevent Hemorrhagic cystitis in Cyclophosphamine administration?
MENSA
What is the mechanism of action of Carmustine? What is it used to treat?
Nitrosurea alkylating agent that is highly lipophilic –> Brain cancer
What two enzymes reduce the efficacy of the DNA alkylating agents?
Glutathione
MGMT
List the three Platinum compounds. What is their mechanism of action?
Cisplastin
Carbiplatin
Oxiplatin
These drugs are all non-classical DNA alkylating agents
What are the unique adverse effects associated with Cisplatin?
Nephrotoxicity
Peripheral Neuropathy
Anaphylaxis
How is the neprotoxicity associated with Cisplastin prevented?
Co-administration with IV saline
What adverse effect is seen with Carbiplatin?
Anaphylaxis only
What is the mechanism of action of Procarbazine? What is it used to treat?
Non-classical alkylating agent used to treat Hodgkins’ Disease
What is the mechanism of action of Dacarbazine? What is it used to treat?
Non-classical alkylating agent used to treat Melamona and Sarcoma
What is the mechanism of action of Temozolamide? What is it used to treat?
Non-classical alkylating agent used to treat Glioblastoma and Melanoma
List the Anti-microtubule drugs. What phase of the cell cycle do these agents perturb?
Vinblastine
Vincristine
Paclitaxel
Docetaxel
M-phase
Which of the anti-microtubule drugs inhibit microtubule polymerization?
Vinblastine and Vincristine
Which of the anti-microtubule drugs inhibit microtubule depolymerization?
Paclitaxel
Docetaxel
What is the unique adverse effect seen with Vincristine?
Neurotoxicity
What is the unique adverse effect seen with Paclitaxel?
Peripheral Neuropathy
Anaphylaxis
Myelosuppression
What drugs are used to prevent the anaphylaxis seen with Paclitaxel?
Diphenhydramine
Dexamethasone
What drug is given to counteract the myelosuppression seen with Paclitaxel?
Filgrastim, a G-CSF drug
List the Topoisomerase I inhibitors.
Topotecan
Irinotecan
List the Topoisomerase II inhibitor.
Etoposide
What is the mechanism of action of Doxorubicin?
This is an antibiotic that:
- Topoisomerase II inhibitor
- Intercalates DNA
- Inhibits DNA polymerase
What is the unique adverse effect seen with Doxorubicin?
Irreversible cardiomyopathy
How is the cardiomyopathy seen with Doxorubicin prevented?
Dexrazoxane
What is the mechanism of action of Bleomycin?
Small peptide that cause single and double strand DNA breaks in G2
What unique adverse effect is seen with Bleomycin?
Pulmonary toxicity
What is the mechanism of action of Tamoxifen?
Estrogen receptor antagonist
*****Treats estrogen receptor positive breast cancer
What is the mechanism of action of Anastrazole?
Inhibits aromatase to prevent conversion of Testosterone to estrogen in post-menopausal women with estrogen receptor positive breast cancer
What is the mechanism of action of Leuprolide and Goserelin?
These are GnRH AGONISTS used to treat prostate cancer
What is the mechanism of action of Degarelix?
GnRH ANTAGONIST used to treat prostate cancer
What is the mechanism of action of Trastuzumab?
HER-2 receptor antagonist
What is the unique side effect seen with Trastuzumab?
Cardiotoxicity
What is the mechanism of action of Cetuximab?
EGFR antagonist used to treat COLON CANCER
Activating mutation of what proto-oncogene limits the efficacy of Cetuximab?
Ras
What is the mechanism of action of Bevacizumab?
VEGF inhibitor
What is the mechanism of action of Lapinotab?
EGFR and HER-2blocker (downstream target) used for REFRACTORY BREAST CANCER
What is the mechanism of action of Erlotinib?
EGFR receptor blocker used for NON SMALL CELL LUNG CANCER
What is the unique side effect associated with Asparaginase?
Anaphylaxis
What is the mechanism of action of Bortezomib?
Proteasome inhibitor that increases p53
What is the unique adverse effect associated with Bortezomib?
Peripheral neuropathy
What is the mechanism of action of Temsirolimus?
mTOR1 inhibitor
What are the unique adverse effects seen with Temsirolimus?
Hyperglycemia
Triglyceridemia
Which antineoplastic agents are nephrotoxic?
Cisplastin
Methotrexate
Which antineoplastic agents are neurotoxic?
Vincristine Cytarabine Cisplastin Bortezomib Paclitaxel
Which antineoplastic agents are cardiotoxic?
Doxorubicin
Trastuzumab
Which antineoplastic agents cause bladder toxicity?
Cyclophosmphamide
Which antineoplastic agents cause hypersensitivity reactions/ anaphylaxis?
Asparaginase
Paclitaxel
List the ADP receptor antagonists/ P2Y12 antagonists.
Clopidegril
Prasugrel
Ticagrelor
Cangrelor
Which ADP receptor antagonists are irreversible?
Clopidegril
Prasugel
Which ADP receptor antagonists are reversible?
Ticagrelor
Cangrelor
Which ADP receptor antagonists have been shown to be more efficacious? What is their drawback?
Prasugrel
Ticagrelor
Despite being more efficacious, also associated with more bleeding
What CYP enzyme metabolizes Clopidegril?
CY2C19
What is the clinical significance of CYP2C19?
- Highly polymorphic
- Inhibited by omeprazole i.e. omeprazole increases the efficacy of Clopidegril
List the GPIIb/IIIa antagonists. Which of these are a Fab antibody, peptide, and non-peptide small molecule?
Abciximab - Fab antibody Integrelin Eptifabitide- peptide Tirofiban- non-peptide small molecule Lamifiban
What are the adverse effects seen with GPIIb/IIIa administration?
Thrombocytopenia
Bleeding
What is the mechanism of action of Voraxapar?
PARR antagonist
What is the adverse effect associated with Voraxapar?
Intracranial bleeding
**Note that this drug is contraindicated in patients with a history of intracranial bleeding
What is dual anti-platelet therapy? Triple?
Dual= ASA and clopidegril Triple= + Warfarin
List the indirect thrombin/ Factor X inhibitors. What is the difference between these three drugs?
Heparin
Enoxaparin - LMWH
Fondapainaux - Pentasaccharide
What are the adverse effects associated with Heparin?
Bleeding
Osteoporosis
HIT
What drug reverses Heparin?
Protamine
List the direct thrombin inhibitors.
Lepirudin
Bivalrudin
Argatraban
Dabigatran (oral)
Which of the direct thrombin inhibitors is divalent? What does this mean?
“rudins” –> block the active site and E1 site on Thrombin
Which of the direct thrombin inhibitors is monovalent? What does this mean?
“an’s” –>block only the active site
List the direct Factor Xa inhibitors.
Rivaroxaban
Apixaban
What enzyme metabolizes Warfarin?
CYP2C9
List the fibrinolytic drugs.
Streptokinase
Alteplase
Reteplase
Tenectaplase
(t-PA)
What are the unique adverse effects seen with Streptokinase administration?
Tolerance
Hypersensitivity reaction
What drugs can reverse fibrinolytic therapy?
Aminocaproic acid
Tranexamic acid
Draw the general pathway of cholesterol metabolism.
N/A
What drug blocks NPC1L1?
Ezetimibe
What is the function of Apo C-II?
Activation of LPL
What is the transporter that get cholesterol from the periphery into HDL?
ABAC1
What disorder is characterized by decreased LPL expression or function?
Primary Chylomicronemia
What is the manifestation of Primary Chylomicronemia?
Increased chylomicrons and VLDL
Which drugs are best at treating Primary Chylomicronemia?
Fibrates and Niacin
What disease is characterized by decreased Apo E function of expression?
Dysbetalipoproteinemia
What is the manifestation of Dysbetalipoproteinemia?
Increased IDL and chylomicron remnants
What is the best therapy for Dysbetalipoproteinemia?
Fibrates and Niacin
What disease is characterized by decreased apo C-II function or expression?
Familial Hypertriglyceridemia
What is the manifestation of Familial Hypertriglyceridemia ?
Increased Chylomicrons and VLDL
What is the best therapy for Familial Hypertriglyceridemia ?
Fibrates and Niacin
What disease is characterized by decreased LDLR function or expression?
Familial Hypercholesterolemia
What is the manifestation of Familial Hypercholesterolemia?
Increased LDL
What is the best therapy for Familial Hypercholesterolemia?
Statins
Ezetimibe
Bile acid binding resins
Niacin
What is the effect of decreased Apo-B 100 function of expression?
Increased LDL
What is the best treatment for an ApoB-100 defect?
Statins
Ezetimibe
Bile acid binding resins
Niacin
List the Fibrates.
Gemfibrozil
Fenofibrate
What is the mechanism of action of the Fibrates?
PPAR activation
List the bile acid binding resins.
Cholestyramine
Cholesevelam
Colestipol
What is the mechanism of action of Niacin?
Inhibition of adipocyte hormone sensitive lipase
List the statins.
Atorvastatin Rouvastatin Lovastatin Pitastatin Simvastatin Flouvastatin
What are the indications for Quinidine?
Refractory:
- A-fib/flutter
- Life threatening ventricular arrhythmia
What are the indications for Procainamide?
1) Re-entry SVT
2) A-fib
3) A-flutter with WPW
4) Life threatening ventricular arrhythmia
What are the indications for Lidocaine?
- Post MI arrhythmia
- Digitalis induced arrhythmia
What are the indications for Propafenone?
1) PSVT
2) Atrial arrhythmia
3) Ventricular arrhythmia in patients WITHOUT heart disease
What are the indications for Amiodarone?
1) Acute conversion of VT or VF
2) A-fib
3) AVNRT
4) WPW
What are the indications for Verapamil?
1) SVT
2) A-fib with RVR
3) Angina
4) HTN
What are the contraindications to Verapamil?
- Conduction block
- WPW + a-fib
- Ventricular Tachycardia
What are the adverse effects seen with Adenosine administration?
1) Bradycardia/ heart block
2) Flushing
3) Dyspnea
4) Hypotension (A2 mediated vasodilation)
What are the indications for Acetazolamide?
1) Glaucoma
2) Acute Mountain Sickness
3) Urinary Alkalization
4) Edema
What are the adverse effects of Acetazolamide?
- Hyperchloremic metabolic acidosis
- Renal stones
- Renal K+ loss
What are the contraindications for Acetazolamide?
Cirrhosis
What are the indications for osmotic diuretics?
1) Prophylaxis for acute renal failure
2) Cerebral edema
3) Dialysis disequilibrium
4) Acute glaucoma
What are the adverse effects of osmotic diuretics?
- Pulmonary edema
- Hypo/hypernatremia
List the loop diuretics.
Furosemide
Bumetanide
Ethacrynic acid
What are the indications for loop diuretics?
1) Pulmonary edema
2) CHF
3) Acute renal failure
4) Hyperglycemia
What are the adverse effects of the loop diuretics?
- Hypokalemia, natremia, calcemia, magnesia
- Ototoxicity
- Hyperuricemia
List the Thiazide diuretics?
Chlorathalidone
Hydrochlorothiazide
Metalazone
Indapamide
What is unique about the Thiazide diuretics in terms of ion secretion/ absorption?
Stimulation of PTH causes Ca++ REABSORPTION
What are the indications for Thiazide diuretics?
HTN
CHF
Hypercalciuria/ renal stones
Nephrogenic DM Insipidus
List the K+ sparing diuretics.
Amiloride
Triamtrene
What is the MOA of K+ diuretics?
Block epithelial Na+ channels on principal cells; thus, K+ is NOT secreted
What are the indications for the K+ diuretics?
- Hypokalemic alkalosis
- Combination therapy to prevent hypokalemia
List the Aldosterone antagonists.
Spironolactone
Eplerenone
What are the indications for Aldosterone antagonists?
1) Edema
2) CHF
3) HTN
4) Primary or secondary hyperaldosteronism
What are the adverse effects of the aldosterone antagonists?
- Hyperkalemia
- Metabolic acidosis in cirrhosis
- Hormonal effects (gynecomastia, impotence…etc.)
What are the contraindications for ACE inhibitors?
1) Pregnancy
2) Bilateral renal artery stenosis
3) Angioedema
Under what circumstances will ACE inhibitors have an increase in favorable effects?
- Low K+ or hypokalemia
- Pre-DM
- Albuminuria
Under what circumstances will ACE inhibitors have an unfavorable effects?
- High K+ or hyperkalemia
- Volume depletion
What are the adverse effects of ACE inhibitors?
C= cough A= angioedema P= potassium (increased) T= taste change O= hypOtension P= pregnancy--> fetopathic R= rash i l
List the ACE inhibitors.
Lisinpril
Captopril
Fosinopril
What are the contraindications for ARB therapy?
Pregnancy
Bilateral renal artery stenosis
List the ARBs.
Losartan
Valsartan
Candesartan
What is the role of DHP Ca++ blockers in HTN?
1) First line or add on therapy for uncomplicated
2) Add on therapy for DM and CAD
When should DHP Ca++ blockers be avoided?
LV dysfunction
List the DHP Ca++ blockers used in anti-HTN therapy.
Nifedipine
Amlodipine
Felodipine
Under what circumstances can DHP Ca++ therapy have increased favorable effects?
1) Reynaud Syndrome
2) Elderly patient with isolated systolic HTN
3) Cyclosporine induced HTN
Under what circumstances can DHP Ca++ therapy unfavorable effects?
- Peripheral edema
- Tachycardia
What is the role of NDPH Ca++ blockers in HTN?
1) First line or add on for uncomplicated HTN
2) Add on for DM
3) Alternative to Beta-blockers in CAD
These drugs will DECREASE myocardial oxygen consumption*
When should NDHP Ca++ blockers be avoided?
- AV block
- LV dysfunction
Under what circumstances can NDHP Ca++ therapy have increased favorable effects?
1) Reynaud Syndrome
2) Migraine
3) Arrhythmia
4) Tachycardia
Under what circumstances can NDHP Ca++ therapy unfavorable effects?
- Peripheral edema
- Bradycardia
- AV block
When are Thiazide diuretics first-line therapy in HTN?
1) LV dysfunction
2) S/p CVA
When should Thiazide diuretics be avoided?
1) Allergy to Sulfa
2) Gout
3) Hyponatremia
4) Hypokalemia
5) Pre-DM/ elevated fasting glucose
What comorbid conditions should Thiazide diuretics be used in, if a patient has HTN?
- Osteoporosis b/c of increased Ca++ reabsorption
- Hyperkalemia b/c of K+ excretion
When are Beta blockers first line therapy for patients with HTN?
CAD and LV dysfunction
Are aldosterone antagonists first line therapy or add on therapy?
Add on therapy
What situations should aldosterone antagonists be used as add on therapy?
Resistant HTN
CAD
LV Dysfunction
In addition to their normal use, when is aldosterone antagonist therapy beneficial?
Hypokalemia
CKD
What is the role of alpha-1 antagonists in HTN therapy?
- Used in conjunction w/ diuretics
- Lower cholesterol and trigylcerides
List the central alpha 2 agonists.
Clonidine
A-methyldopa
What adverse effects are seen with alpha-methyldopa?
1) Hepatotoxicity
2) Positive direct coombs test
What is the mechanism of action of Hydralazine?
- Arterial vasodilation by blocking IP3 induced Ca++ release
- Opens K+ channels to hyperpolarize vascular smooth muscle
What is the role of Hydralazine in HTN therapy?
- Add on for resistant HTN esp. in CKD
- SAFE in pregnancy
What enzyme activates organic nitrates?
Mitochondiral aldehyde reductase