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PHM - Exam 3 - MOA
N/A
64
Medical
Graduate
06/08/2013

Additional Medical Flashcards

 


 

Cards

Term
Vancomycin and Bacitracin
Definition
cell wall synthesis inhibition: inhibits formation of peptidoglycan units

"can't swallow van"---> IV

"can't hear the van coming"---> HEARING LOSS

"always parked out in the bac"---> TOPICAL ONLY

"macro lines around pristin van in the bac..."---> G+
Term
beta-lactam (Penicillins and Cephalosporins)
Definition

cell wall synthesis inhibition: inhibits cross-linking of peptidoglycan strands "Pen-G graph"---> IV "3rd gen: smarter than rest"---> CNS CARBAPENEM--->with CILLISTATIN (renal metabolism inhibitor) CEPHALOSPORIN; MONOBACTAM: "aren't ceph from mono"---> G-

 

"love their tetra-packs and their carbs"---> CARBAPANEM: both G+/G-

Term
Penicillins
Definition
cell wall synthesis inhibition: binds transpeptidase (PBP)---> inhibits peptidoglycan cross-linking--->titrates out peptidoglycan chains
Term
Polymyxin
Definition
binds and disrupts cell membrane (bactCIDAL)

"prevent surgical myx-ups"---> reduce bowel flora prior to surgery---> NO GI ABSORPTION
AMPHOTERICIN B---> IV

"polymyxin, -acin-ine amy-go's..."---> G-
Term
polyene antifungal
Definition
binds ergosterol-containing cell membrane receptors (higher affinity than to cholesterol)

Nystatin: "never nice nephrotically"---> NEPHROTOXIC
Term
Azole Antifungals
Definition
inhibits 14-alpha-sterol demethylase (fungal specific)

"flu-ck with your mind"---> FLUCONAZOLE: CNS

"Azoles are assholes"---> BLOCK CYP450 action on other drugs
Term
5-Fluorocytosine Antifungals
Definition
metabolized by fungal specific 5-Fluuorouracil
Term
Fluoroquinolones
Definition
inhibits gyrases/topisomerases

"flu-ck with your mind"---> CNS

"flour is too heavy for kids <17"---> CARTILAGE DAMAGE <17 y/o

Clindamycin--> "cling on to your stomach"---> SEVERE GI IRRITATION

"-acinine amygo's...pee into cup"---> UTI

"polymyxin, acin-ine amy-gos..."---> G-

CLINDAMYCIN:
""meth and sulfa drug addicts clin on to..."---> BROAD Spec
Term
Rifampin
Definition
inhibits RNA Pol; blocks initiation

"rif-raf in pts"---> ORANGE TINT

"moms don't like rifraf"---> TERATOGENIC (bad for moms); REDUCE METABOLISM OF OTHERS

"...keep ery-thing from the rif-raf"---> G+
Term
Aminoglycosides
Definition
decreases protein synthesis at 30S ribosomal subunit; mis-incorporates amino acids (B.CIDAL)

"amino acids: muscles"--->IM

"noisy, hyper amigo of Cehpalosporin"---> OLFACTORY; NMJ

"acin-ine amy-gos...pee into cup"---> UTI

"polymixin, acin-ine ami-go's..."---> G-
Term
Tetracyclines
Definition
B'STAT; inhibits protein synthesis at 30S ribosomal subunit

"tetra - four"---> CROSSES PLACENTA AND BREAST MILE; SUPERINFECTION; PHOTOTOXICITY; DISCOLORED TEETH

"addicts like their tetra packs"---> BROAD Spec
Term
Chloramphenicol
Definition

blocks peptide bond formation at 50S subunit---> B'STAT "ch-liffs are scary and make your head hurt"---> MENINGITIS "infants shouldn't go near ch-liffs"--> CV TOX. IN INFANTS; TOXIC BM SUPRESSION vs. APLASTIC ANEMIA!

 

"AZT in liver makes you want to jump off chl-iff"---> HEPATIC metab.

Term
Macrolides (Erythromycin; Clarithromycin; Azithromycin; and Telithromycin)
Definition
inhibits peptide bond formation in the 50S subunit--> B'STAT

"macro problem for liver"---> HEPATOTOXICITY (only used for RTI)

"macro lines of AZT...in liver"---> HEPATIC Metab.

"macro lines around pristin van..."---> G+
Term
Retapamulin
Definition
inhibits protein synthesis AND tRNA binding at 50S subunit---> B'STAT

"tap your skin with it"---> TOPICAL
Term
Quinupristin/Dalfopristin
Definition
inhibits protein synthesis at 50S---> B'STAT

"not a pristin-e site of injection"---> IRRITATION AT SITE OF INJECTION

"AZT in an otherwise pristine liver"---> HEPATIC metab.
Term
Linezolid
Definition
binds 50S and blocks 70S formation---> B'STAT

"macro lines of AZT...in liver"---> HEPATIC metab.

"macro lines around pristin van..."---> G+
Term
Sulfonamides
Definition
p-aminobenzoic acid analogs---> blocks FOLIC ACID synthesis---> B'STAT

"sulfa drugs can mess with your head"---> CSF

"sulfa drug addicts have to pee in cups"---> CRYSTALURIA (in low pH); used for UTI

"meth and sulfa drug addicts clin on to..."---> BROAD Spec
Term
Trimethoprim-Sulfamethoxazole
Definition
inhibits DIHYDROFOLATE REDUCTASE (blocks reduction to tetrahydrofolate)
Term
Flucytosine
Definition
metabolized by FUNGI only---> to 5-FdUMP---> antimetabolite that blocks nucleic acid synthesis
Term
Nitrofurantoin
Definition
metabolized to reactive intermediates---> DAMAGE DNA

"smokers at nit have trouble breathing"---> PULMONARY FIBROSIS; BROWN URINE

"user in the nit...pee into cup"---> UTI
Term
Methenamine
Definition
hydrolyzed to FORMALDEHYDE in acidic env.---> B'CID; in alkaline---> B'STAT

for acidic env.---> given with ACID SUPPLEMENT

"meth users shouldn't be using sulfa drugs too!"---> SULFA: LESS SOLUBLE IN ACIDIC URINE

"sulfa drugs and meth users...pee into cup"---> UTI

"meth and sulfa drug addicts clin on to..."---> BROAD Spec
Term
Imatinib
Definition
anticancer chemotherapy: tyrosine kinase inhibitor
Term
Gefitinib (Iressa)
Definition
anticancer chemotherapy: tyrosine kinase inhibitor---> blocks EGFR gene txn; for non-small cell lung cancer; responsiveness depends on tiny mutations in EGFR gene.
Term
Bevacizumab (Avastin)
Definition
anticancer chemotherapy: angiogenesis inhibition-->Ab targeting of VEGF
Term
Sunitinib (Sutent); Sorafenib (Nexavar)
Definition
tyrosine kinase inhibitor--->inhibits VEGF
Term
Suberoylanilide Hydroxamic Acid (Vorinostat)
Definition
HDACi (histone deacetylase inhibitor)---> reactivates tumor suppressor genes
Term
Azacytidine and Decitabine
Definition
DNA methylation inhibitors---> reactivation of tumor suppressor genes
Term
Alkylating cancer chemotherapeutic agents
Definition
metabolized (ACTIVATED) in liver---> cross links DNA
Term
BUSULFAN
Definition
primarily myelosuppression

Alkylating Agent
Term
Gemcitabine
Definition
non-cycle active; inhibits DNA synthesis; alters DNA template activity; mostly for SOLID TUMORS

Alkylating Agent
Term
Methotrexate
Definition
inhibits dihydrofolate reductase conversion of dihydrofolic acid to tetrahydrofolic acid; covalent addition of POLYGLUTAMATE---> increased water solubility---> trapping in cell; parent compound is active (unlike purine acid analogs)

"methotrexate can be trex'ed with fony folinic acid"---> FOLINIC ACID---> THF, REVERSE TOXICITY

Antimetabolite
Term
Mercaptopurine; Thiogaunine
Definition
purine biosynthesis inhibition; metabolized to activate (unlike folic acid analogs)

Antimetabolite
Term
Pyrimidine Analogs: 5-Fluorouracil; Cytrabine
Definition
pyrimidine biosynthesis inhibition; metabolized to activate (unlike folic acid analogs)

Antimetabolite
Term
Taxol
Definition
mitosis blockers;

natural anticancer drugs from plants
Term
natural anticancer drugs from plants (Vinca Alkaloids: Vincristine)
Definition
mitosis inhibition---> metaphase arrest; ACUTE LEUKEMIA
Term
Vinca Alkaloids: Vinblastine
Definition
mitosis inhibition---> metaphase arrest; (SOLID TUMORS; HODGKINS DISEASE; TESTICULAR TUMORS)

BLASTS BLOOD

natural anticancer drugs from plants
Term
Etoposide
Definition
topoisomerase inhibition---> breaks in DNA strands; TESTICULAR CANCER

natural anticancer drugs from plants
Term
Toptecan
Definition
topoisomerase inhibition---> breaks in DNA strands;OVARIAN and LUNG CANCER

natural anticancer drugs from plants
Term
Actinomycin D
Definition
RNA Pol inhibition; solid tumors

VERY TOXIC

natural antibiotics
Term
Bleomycin
Definition
DNA strand breaks; solid tumors; testicular cancer; lymphomas

natural antibiotics
Term
Doxorubicin
Definition
topoisomerase inhibition

natural antibiotics
Term
Mitomycin
Definition
"mighty Cis-sy drives.."---> alkylating agent; solid tumors natural antibiotics
Term
Corticoids: Prednisone
Definition
leukemia; hormones
Term
Tamoxifen; Fulvestrant
Definition
metabolized to activate---> competitive activation in presence of antidepressants (cause both use CYP2D6 liver enzyme);
Term
Exemestane; Anastrozole
Definition
inhibits androstenedione---> estrone; BREAST cancer
Term
Flutamide
Definition
anti androgen; METASTATIC PROSTATE cancer; + Leuprolide (androgen uptake inhibitor---> prevent action of circulating androgens); or + orchiectomy

"flutes are for girls"---> GYENECOMASTIA
Term
Cisplatin
Definition
DNA damage; for VARIETY of solid tumors
Term
Hydroxyurea
Definition
ribonucleic reductase (ribonucleotides---> deoxyribonucleotides)
Term
Acyclovir; Gancyclovir
Definition
guanosine nucleoside ANALOG---> chain termination

"gan"u---> change you---> TERATOGENIC
---> get in your head---> CNS TOX

Herpes (Acyclovir---> also EBV)
Term
Idodeoxyuridine
Definition
thymidine analog---> incorporates into DNA template; affects mammals

Herpes
Term
Vidarabine
Definition
adenosine analog---> chain termination;

antiviral (DNA viruses, nonretroviral)
Term
Amantadine
Definition
"amala force you to wear your coat"---> inhibits M2 H+ channel---> blocks viral uncoating "ama"la---> get inside your head---> CNS TOX Influenza A
Term
Oseltamavir
Definition
viral neuramidase inhibition (no sialic acid cleavage)--> accumulation of virus at cell surface

Influenza A
Term
Zanamivir
Definition
viral neuramidase inhibition (no sialic acid cleavage)--> accumulation of virus at cell surface; NO conformational change needed for binding (unlike Oseltamivir)

for colds---> INTRANASAL

Influenza A and B
Term
Interferons
Definition
multiple---> antiviral protein production;

Hepatitis B and C
Term
Lamivudine
Definition
cytidine ANALOG---> DNA polymerase inhibition; reverse transcriptase inhibition (some anti-HIV); chain termination

Hepatitis B
Term
Zidovudine (AZT)
Definition
nucleoside (thymidine) analog---> reverse transcriptase inhibition

antiretroviral
Term
Nevirapine; Efavirenz
Definition
non-nucleoside reverse transcriptase inhibition

antiretroviral
Term
Atazanavir; Idinavir
Definition
protease inhibition

BLOCK CYP450 (like Azoles)

antiretroviral
Term
Efuviritide
Definition
binds gp41---> no interaction with co-receptor

SQ

antiretroviral
Term
Maraviroc
Definition
binds host CCR5

antiretroviral
Term
Rlategravir
Definition
integrase inhibition

antiretroviral
Term
List the narrow spectrum Penicillins.
Definition
"guys are meth. addicted, clo-se mined ox's and dic-ks"
- Pen G
- Methicillin; Phenoxymethyl.
- Oxacillin
- Dicloxicillin
- Cloxicillin

mostly G+, and few G-

"shot up meth"---> PARENTERAL admin.
Term
List the broad spectrum Penicillins.
Definition
the rest of the -cillins: "negative body image case amorous of carbs"---> more G- than narrow spec. pen's
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