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183 Cards in this Set

  • Front
  • Back
Trastuzumab
(mAb)
immunosuppressive agent
recombinant mAb that binds epidermal growth factor receptor and down regulates it
Clinical use: Breast cancer HER-2/neu
Rituximab (mAb)
murine mAb that binds CD20 on B-cells and activates complement mediated lysis, ADCC, and apoptosis
Clinical use of Rituximab (mAb)
RX of:
Follicular B-cell lymphoma
Non-hodgkins lymphoma
Daclizumab
Binds CD25 and functions as IL-2 antagonist and suppresses lymphocytic activation
Clinical use of Daclizumab
Organ transplants in comb with glucocorticoids and cyclosporine
Basiliximab
binds CD25 and functions as an IL-2 antagonist and suppresses lymphocytic activation
has higher affinity than Daclizumab
Palivisumab
binds fusion protein of RSV
Prevents infection of the cell
clinical use of Palivisumab
rx of neonates at risk for RSV
Abatacept
selective co-stimulation modulator
Binds CD80 and CD86 (on APC) blocking interaction with CD28 (T-cell) and leads to inhibition of autoimmune T-cell activation
Clinical use of Abatacept
Rheumatoid arthritis
Prednisone
Glucocorticoid
Interferes with cell cycle activated lymphoid cells, inhibits production of pro-inflammatory mediators and inhibits leukocyte chemotaxis
Clinical use of Prednisone
Immunosuppressive agent
Cyclosporine
immunosuppressive fat soluble peptide antibiotic
Binds cyclophilin and inhibits calcineurin and inhibits synthesis of IL-
clinical use of Cyclosporine
prevents tissue rejection following transplant
Tacrolimus
immunosuppressive agent
similar to cyclosporine except complexes with FK binding proteins
- Use in Organ transplants
Sirolimus
immunosuppressive agent
- binds immunophilin-FK-BP
- inhibits mTOR > prevents cell cycle progression G1>S
- inhibits lymphocyte proliferation
Clinical use: organ transplants
Interferons
immunosuppressive agents
- inhibits cell proliferation and active NK cells
Clinical use of Interferons
Melanoma
renal cell carcinoma
CML
alpha-interferon clinical use
anti-viral HBV & HCV
beta-interferon clinical use
treat MS
Azathioprine
derivative of mercaptopurine
- anti-metabolite that inhibits de novo protein synthesis
Adverse effects: myeloid suppression
Mycophenolate mofetil
derivative of mercaptopurine
- Hydrolyzed in GI tract to mycophrnolic acid
- reversible inhibition of inosine monophosphatase dehydrogenase
- no formation of guanosine phosphate
- lymphocyte lack purine salvage pathway
Clinical use of Mycophenolate mofetil
replacing azathiroprine due to increased safety and efficacy in prolonging graft survival
mechanism of action of Alkylating agents
transfer alkyl group to various tumor cell targets
replicating cells are most susceptible
primarily N7 position on guanine within DNA
Resistance of Alkylating agents in the treatment of neoplasms
increased DNA repair
Increased Glutathione production
Decreased permeability of drug
Cyclophosphamide
alkylating agent
-Bischlorethylamine
- converts to active metabolite by P450 system in the liver
- Non-enzymatic conversion to additional cytotoxic forms in non-hepatic tissue
Toxicity of cyclophosphamide
hemorrhagic cystitis
Carmustine
alkylating agent
- Nitrosurea
- non-resistance with other alkylating agents
- non-enzymatic conversion to active form
- highly lipid soluble > crosses BBB
Procarbazine
methylhydrazine derivative
- inhibits DNA, RNA, and protein via alkylation
- Azoprocabazine + H2O2 generated during metabolism > DNA strand breaks
Cisplatin
inorganic platinum complex
cross links DNA via interaction at N7 guanine
toxicity: aggressive IV hydration needed to reduce nephrotoxicity
Carboplatin
2nd generation Inorganic platinum complex
cross links DNA via interaction of N7 guanine
- less renal toxicity than Cisplatin
Oxaliplatin
3rd generation inorganic platinum complex
- cross links DNA via interaction of N7 guanine
- cells resistant to Cisplatin and Carboplatin NOT resistant to this drug
Methotrexate
folic acid antagonist
inhibitor of DNA synthesis and integrity
- binds catalytic site of DHF-reductase
- interferes with DNA, RNA, protein synthesis
- Polyglutamate of MTX retained within the tumor cells
-NON-cell cycle dependent
resistance to MTX occurs because?
decreased drug transport
decreased polyglutamate formation
increased DHFR-synthesis
Decreased affinity of DHFR for MTX
Mercaptopurine (6-MP)
purine antagonist
- inhibitor of DNA synthesis and integrity
- Metabolized by HGPRT to nucleoside form
- inhibits several enzymes in purine metabolism pathways
- NON-cell cycle dependent
Toxicity of Mercaptopurine
hyperuricemia due to tumor cell lysis
rx with allopurinol to prevent nephrotoxicity and gout
requires decreased 6-MP does
drug resistance to Mercaptopurine
drug resistance due to decreased HGPRT activity
Cladribine
purine antagonist
inhibitor of DNA synthesis and integrity
non-cell cycle dependent
resistance to Cladribine due to?
resistance due to adenosine deaminase (high cellular concentration)
Flurouracil MOA
Pyrimidine antagonist
- Fdump: forms complex with thimydilate synthase > NO thymidilate > NO DNA synthesis
FUTP: incorporated into RNA and interferes with RNA processing and mRNA translation
FdUTP: incorporated into DNA & inhibits synthesis
clinical use of Flurouracil
Colorectal cancer
Capecitabine
pyrimidine antagonist
- Fluropyrimidine carbamate prodrug
- converted to Flurouracil in the tumor by thymidine phosphorylase
clinical use of Capecitabine
metastatic breast cancer
Cytarabine
pyrimidine antagonist
cytosine arabinoside (Ara-C)
- metabolized to active triphosphate nucleoside
- S PHASE Specific metabolite
- Competitively inhibits DNA polymerase > incorporates with DNA/RNA > interfering with chain elongation
Clinical use of Cytarabine
Acute Myelogenous leukemia
- highly schedule dependent
Vinblastine
plant alkaloid derivative of periwinkle
- depolymerize microtubule by binding tubulin > assembly termination > MITOTIC ARREST
clinical use of Vinblastine
Hodgkins lymphoma
Non-hodgkins lymphoma
breast cancer
Vinicristine
plant alkaloid derivative of periwinkle
depolymerize microtubule by binding tubulin > assembly termination > MITOTIC ARREST
clinical use of vinicristine
ALL in children
Hodgkins lymphoma
Non-Hodgkins lymphoma
Ewing's sarcoma
Wilms tumor
Breast cancer with Mitomycin
Etoposide
plant alkaloid: semi synthetic mayapple root
- blocks cell division in late S2-G phase of cell cycle
- inhibits topoisomerase II > DNA strand breakage
Clinical use of Etoposide
Germ cell cancer
Lung cancer
Hematologic malignancies
Gastric cancer
topotecan
plant alkaloid campototheca acuminate tree
inhibits topoisomerase I: for cutting and religating single DNA strands
clinical use of topotecan
Advanced ovarian cancer when platinum based agents have failed
Paclitaxel
plant alkaloid Taxane from yew tree
- binds microtubules and enhances tubulin polymerization in the absence of key microtubules components > inhibition of mitosis and cell division
clinical use of Paclitaxel
solid tumors
Dactinomycin
antibiotic
- binds DNA b/t adjacent guanine-cytosine base pairs > inhibits RNA synthesis
clinical use of Dactinomycin
Pediatric tumors
Mitomycin
antibiotic
metabolized to an alkylating agent that cross-links DNA
clinical use of Mitomycin
Breast cancer with Vincrinstine
Bleomycin
antibiotic
small peptide with DNA binding region at one end and iron binding domain at the other end
- bind DNA and Iron > oxidized leading to chromosomal aberrations
- accumulation of cells in the G2 phase
Toxicity of Bleomycin
dose reduction necessary in renal insufficiency
- pulmonary fibrosis
Doxorubicin
antibiotic
inhibition of topoisomerase II
DNA binding and inhibition of DNA synthesis
Bind cell membrane and alter fluidity and ion transport
Generation of ROS
Clinical use of Doxorubicin
Rx of hematologic malignancies and solid tumors
toxicity of Doxorubicin
cardiotoxicity
Danorubicin
antibiotic
inhibition of topoisomerase II
DNA binding and inhibition of DNA synthesis
Bind cell membrane and alter fluidity and ion transport
Generation of ROS
Clinical use of Danorubicin
Rx of AML
Tamoxifen
anti-steroid agent
Binds estrogen receptor of estrogen dependent tumors
low affinity than estradiol for receptor > endogenous estrogen must be ablated
clinical use of Tamoxifen
estrogen receptor positive breast cancer
Flutamide
anti-steroid agent
anti-androgen effects via binding to receptor
clinical use of Flutamide
Prostate cancer
Leuprolide
hormone agonist
synthetic peptide analog of GnRH
- activates GnRH leading to transient release of FSH/LH > desensitization of receptors > reduced FSH/LH release > decreased testosterone
clinical use of Leuprolide
androgen + tumors
prostate cancer
Anastrozole
aromatase inhibitor
non-steroid inhibitor of aromatase
Anastrozole clinical use
metastatic breast cancer in post-menopausal women
Exemestane
aromatase inhibitor
steroidal hormone that irreversibly inhibits aromatase
- no cross resistance between this and non-steroidal aromatase inhibitors
Imatinib
anti-cancer mAb
inhibits oncoprotein tyrosine kinase that promotes abnormal proliferation and anti-apoptotic pathways
clinical use of Imatinib
Breast cancer
- ABL
- Chronic myeloid leukemia
- c-Kit (GI stromal tumors)
Asparaginase
hydrolyzes circulating L-asparagine > aspartic acid and ammonia
NO protein synthesis
clinical use of Asparaginase
ALL in pediatrics
Sorafenib
anti-cancer mAb
multikinase inhibitor of kinases involved in angiogenesis and intracellular signaling > decrease tumor growth
clinical use of Sorafenib
renal cell carcinoma
Nelarabine
pro-drug deoxyguanosine analog
metabolized to ara-GTP and disrupts DNA synthesis > induces apoptosis
Clinical use of Nelarabine
lymphoblastic leukemia
Lenalidomide
thalidomide analog
anti-angiogenic, anti-inflammaotry actions, & enhances anti-cancer activity of T-cells and NK cells
clinical use of Lenalidomide
myelodysplastic syndrome
Amphotericin B
antifungal/polyene antibiotic
MOA: binds ergosterol in fungal membrane > increases membrane permeability > release of cytoplasmic contents
T/F
Amphotericin B has renal toxicity in 80% of patients
True
Does amphotericin B penetrate the CNS?
poor CNS stimulation
Nystatine
polyene antibiotic/antifungal
- binds ergosterol inf fungal membrane > increases permeability anda release cytoplasmic contents
clinical use of Nystatine
only CANDIDIASIS
Itraconazole
azole/antifungal
MOA: inhibits 14-a-demthylase > no conversion of lanosterol > ergosterol > disrupts cell membrane
increases 14-a-demethylsteroids > impaired ATPase and enzymes of the electron transport system
clinical use of Itraconazole
DOC for blastomycosis (lung)
Onychomycosis (nail)
Is Itraconazole affected by gastric and food activity?
YES
- capsule: fed state
- solution: fasting state
administration
Fluconazole
for prevention of Cryptococus meningitis in AIDs & for Candida (esophagus, UTI, vagina)
Is Fluconazole affected by gastric activity or food?
NO
how is Fluconazole eliminated from the body?
renal elimination
does Fluconazole penetrate the CNS?
YES
excellent BBB penetrator
Ketoconazole
phased out due to more drug interactions and decreased CNS use and activity
Voriconazole
treatment of Aspergillus and Candidia
Toxicity associated with Voriconazole
photophobia and chromatopsia
- 60X more potent than Fluconazole
Posaconazole
prophylaxis in immunocompromised patients
Clotrimazole
topical for Candida (mouth, throat, vagina, vulva)
Dermatophyte (athletes foot, jock itch)
T/F
Clotrimazole is NOT effective against infections of the scalp or nails
True
Naftifine
allylamines/antifungal
inhibits squalene mono-oxygenase > NO conversion of squalene to lanosterol > decreased ergosterol > disrupts the cell membrane
clinical use of Naftifine
topical for superficial dermatophyte infections
Terbinafine
allylamine/antifungal
inhibits squalene mono-oxygenase > NO conversion of squalene to lanosterol > decreased ergosterol > disrupts cell membrane
clinical use of Terbinafine
Oral for onchomycosis
- accumulates in the skin, nails, and fat
Caspfungin
Echinoccindins/antifungal
- administered IV
- inhibition of b-(1,3)-glucan synthase > No formation of b-(1,3)-D-glucans in cell wall
clinical use of Caspfungin
Candida for azole resistant infections
Anidnlafungin
Echinoccindins/antifungal
- inhibits b-(1,3)-glucan synthase > no formation of b-(1,3)-D-glucans in cell wall
clinical use of Anidnlafungin
intra-abdominal abscesses caused by Candida and esophageal candidiasis
Flucytosine
Fluorinated pyrimidine accumulated by fungal cells
-converts 5-FU by cytosine deaminase > incorporates into fungal RNA and disrupts protein synthesis
because 5-Flurodeoxyuridylic acid > inhibits thymidilate synthase > impaired DNA synthesis
T/F
Flycytosine doesn't affect human cells because they do not have cytosiene deaminase
true
Griseofulvin
antifungal
- accumulates in keratin precursor cells of skin, hair, nails > interacts with polymerized microtubules > disrupts function
binding sites of Colchine and vinca alkaloids
> prevents Mitosis of Dermatophyte
T/F
the absorption of Griseofulvin is enhanced by taking with a fatty meal
true
Does Griseofulvin induce the CYP3A4 system?
YES
may cause decreased levels of drugs metabolized by CYP3A4 system
Mechanism of action of Nucleoside analogs that are anti-viral medications
prodrug initially phosphorylated by viral thymidine kinase (only affects infected cells)
converted to active metabolites by host kinase
competitively inhibits viral DNA polymerase
NO synthesis of viral DNA
Acyclovir
nucleoside analog
- incorporates into viral DNA and terminates elongation
Clinical use of Acyclovir
HSV
VZV
Prophylaxis for CMV
how does resistance to Acyclovir occur?
thymidine kinase activity is lost
does acyclovir eliminate the virus?
NO
it decreased viral shedding
decreases time to heal
prevents viral replication
Famciclovir
nucleoside analog
- is converted to peniciclovir (topical) after absorption > topical for herpes
clinical use of Famciclovir
topical for herpes and shingles
Ganciclovir
nucleoside analog
administered IV or orally
Ganciclovir clinical use
effective against CMV (retinitis)
Oral prophylaxis
Toxicity of Ganciclovir
leucopenia
thrombocytopenia
T/F
Ganciclovir is 100X more active against CMV than acyclovir
True
what makes Cidofovir a significant nucleoside analog that is effective against CMV?
activated independent of viral enzymes
toxicity of Cidofovir?
nephrotoxic
neutropenia
metabolic acidosis
Can a patient be treated with Cidofovir if they have renal insufficiency?
NO
Nephrotoxic
Foscarnet
administered via IV
nucleoside analog
MOA: no activation by viral or host kinase > blocks phosphate binding site on viral DNA polymerase > NO attaching of nucleoside precursor to DNA
clinical use of Foscarnet
HSV, VZV, CMV
- acyclovir resistant
toxicity associated with Foscarnet
renal and cardiac arrhythmias
mechanism of action of NTRI for treatment of HIV
converted to active triphosphate metabolite (nucleotide) by host kinase
compete for entry into viral DNA (catalyzed by reverse transcriptase)
Causes DNA chain termination
Didanozine
NTRI
Purine conger
tx: HIV
toxicity: pancreatitis & peripheral neuropathy
Lamivudine
NTIR
pyramidine conger
tx: HIV and orally effective against HBV
toxicity: pancreatitis
Stavudine
NTRI
Pyramidine conger
tx: HIV
other info: crosses BBB and renal excretion
Emtricitabine
NTRI
Pyramadine conger
tx: HIV
Zidovudine
NTRI
pyramidine conger
tx: HIV
toxicity: bone marrow suppression, anemia, neutropenia
Efavirenz
Nevirapine
NON-NTRI
MOA: do not require metabolic activation, directly inhibits reverse transcriptase
tx: HIV
MC side effect is RASH
Efavirenz toxicity
teratogenic
Nevirapine toxicity
induces P450 system
Protease inhibitors
Atazanavir
Lopinavir
Ritonavir
mechanism of action of protease inhibitors
(-ending -navir)
binds to active site of HIV protease
production of immature non-infectious particles
tx: HIV
feature of Ritonavir
protease inhibitor that inhibits the metabolism of other protease inhibitors thereby increasing the half-life of other protease inhibitors
Protease inhibitor combination of choice
Lopinavir + Ritonavir
HIV Fusion inhibitors
Enfurvirtide
Enfurvirtide
HIV fusion inhibitor
- inhibits fusion of HIV with host cell by binding gp41 and not allowing viral entry into the cell
administration of Enfurvirtide
Subcutaneous injection
Amantadine
Rimantadine
drugs for tx of influenza
- prevents uncoating of influenze A particles following cell entry
- inhibits viral M2 ion channel
clinical use of Amantadine/Rimantadine
reduces duration and severity of influenza A infection when given within the first 48 hours of symptom onset
What must be done to the dose of Amantadine/Rimantadine if a patient has renal insufficiency?
dose reduction
Is Amantadine/Rimantadine effective against influenza B?
NO
Does amantadine/rimantadine cross the BBB?
Amantadine crosses the BBB
Oseltamivir
Zanamivir
inhibits neurominidase in influenza A & B
inactivates respiratory mucus tract
-osteltamivir can be used for prophylaxis
Ribavarian
inhibits synthesis of viral nucleic acid > decreases guanosine triphosphate > inhibits host cell nucleic acid synthesis
-clinical use: Hepatitis and used alone for RSV
INF-alpha
produced through DNA recombination > typically produced by host cell in response to viral infections > signals multiple pathways for induction of anti-viral proteins
clinical use: used alone for HBV
combination with Ribavarian for HCV
combination of INF-alpha and Ribavarian
HCV
Chloroquine contraindications
psoriasis
porphyria
retinal abnormalities
Myopathy
Kaolin, Calcium/Mg antacids reduce absorption
DOC for prophylaxis and treatment of malaria
Chloroquine
side effects of Quinine in the treatment of malaria
tinnitus
headache
nausea
dizziness
flushing
visual disturbances
caution in: cardiac abnormalities
contraindicated in Mefloquine
what are requirements of treatment with Quinine for malaria?
only for treatment
only for 3 days
only with doxycycline
Quinidine
used for tx of malaria
shorter half life than quinine due to decreased protein binding
Mefloquine
tx of malaria blood schizonticide
administered orally
prophylaxis only
give weekly for chloroquine resistant P. falciparum
side effects of Mefloquine
contraindicated: quinidine, quinine, G6PD deficiency, epilepsy, psych disorders, cardiac conditions
adverse effects: N/V, dizziness, sleep and behavior disturbances
what medication is used for prophylaxis of malaria in pregnancy?
Mefloquine
Primaquine
treatment of malaria in Gametocidal or Tissue schizonticide
contraindications of Primaquine
G6PD deficiency
Pregnancy
Myelosuppression
Pyrimethamine
used in combo with chloroquine for prophylaxis
MOA: inhibits dihydrofolate reductase
Proquanil
used in combination with chloroquine for prophylaxis
MOA: inhibits DHFR
what species of malaria can tetracycline, doxycycline, clindamycin, and azithromycin be used to treat?
all 4 species of malaria
Metronidazole clinical use
Ameobiasis: E.histolytica (trophozoites but not cyst)
Giardiasis
Trichomoniais
Tinidazole
ameobiasis
giardiasis
trichomoniasis
Iodoquinol
Luminal amebicide
-Luminal ameobiasis
Paromomycin sulfate
luminal ameobiasis
- OTOTOXIC
- less toxic and more effective than diloxanide ruoate
Nitazoxanide
Giardiasis
- anti-protozoan
- inhibits pyruvate ferredoxin oxidoreductase pathway
Tinidazole
Giardiasis
Suramin
EARLY EAST African Trypanosomiasis (rodiensiense)
does NOT cross BBB
Melarsoprol
LATE EAST African Trypanosomiasis
-crosses BBB
Pentamindine
EARLY WEST African Trypanosomiasis (gambiense)
best known for its use in the tx of pneumocystis jiroveci
Eflornithine
LATE WEST AFrican Trypanosomiasis (gambiense)
crosses BBB
Nifurtimox
American Trypanosomiasis
- Chaga's disease
Sodium stibogluconate
cutaneous leishmaniaisis
- sandflies