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Kaplan Qbank USMLE



Author48 Posts
  #26

MOA

1.Abciximab-----------Monoclonal antibody

Binds to GP IIb/IIIa receptors on platelets


Inhibit platelet aggregation


  #27

HERPES VIRUS 8 --------KAPOSIS SARCOMA -------------Rx -----ALPHA INTERFERON



PACLITAXEL ---------Rx OF OVARIAN CANCER


REMEMBER-------

PACLITAXEL --------
1. M PHASE SPECIFIC
2.BIND TO TUBULIN
3.HYPERSTABILIZE POLYMERIZED MICROTUBULES
4.INHIBIT MITOTIC SPINDLE BRAEKAGE

  #28

HYDROXYUREA--------

1.INHIBIT RIBONUCLEOTIDE REDUCTASE

2.NO CONVERSION OF RIBONUCLEOTIDES TO DEOXYRIBONUCLEOTIDES

3.Rx OF CML

4. INCREASE HbF synthesis

5.crosses blood brain barrier

6. leucopenia and GI toxicity

  #29

2 CHLORODEOXYADENOSINE-------------

1. RESIST DEGRADATION BY ADENOSINE DEAMINASE

2.Rx OF HAIRY CELL LEUKEMIA

  #30

CYTARABINE--------

1.BLOCKS BOTH DNA AND RNA

2.S PHASE SPECIFIC

3. CEREBELLAR ATAXIA /HEPATITIS /PANCREATITIS

  #31

5 - FLUOROURACIL ------------

1.INHIBIT THYMIDYLATE SYNTHASE

2.EFFECTIVE THROUGHOUT CELL CYCLE

3. MUCOSITIS

  #32

6 MERCAPTOPURINE---------

1.INHIBIT PURINE SYNTHESIS

  #33

methotrexate---------> decrease dTMP ----->decrease DNA n protein synthesis

S/E-----macrovesicular fatty change in liver

  #34

5 fluorouracil--------

bioactivated to 5 F dUMP--------> COVALENTLY COMPLEXES FOLIC ACID-------> complex inhibits thymidylate synthase-------->decrased dTMP---------->decreased DNA n protein synthesis

uses=colon ca, solid tumors, basal cell ca (topical)

S/E------>photosensitivity

  #35

6 mercaptopurine-------------

uses= leukemia , lymphoma ( not CLL or hodgkins)

S/E ----->GI ,liver , bone marrow

  #36

CYTARABINE---------

S/E----->LEUCOPENIA , THROMBOCYTOPENIA , MEAGALOBLASTIC ANAEMIA

  #37

CYCLOPHOSPHAMIDE-----------

Require bioactivation by liver

uses= ovarian/breast ca , non hodgkins lymphoma , immunosuppressants

  #38

nitrosoureas------>MUSTINE'S and streptozocin

alkylate DNA

require bioactivation like cyclophosphamide

cross blood brain barrier----->CNS

uses----CNS tumours

S/E-----------CNS toxicity (dizziness , ataxia)

  #39

CISPLATIN AND CARBOPLATIN---------

ACT LIKE ALKYLATING AGENT

uses = testicular/ovarian ca , bladder ca , lung ca

S/E -nephrotoxicity , acoustic nerve damage

  #40

doixorubicin (adriamycin) ,daunorubicin------------

S/E----ALOPECIA , TOXIC EXTRAVASATION

  #41

ETOPOSIDE----------

G2 phase specific

S/E----alopecia , GI irritation

  #42

TRASTUZUMAB (HERCEPTIN)-------

MONOCLONAL ANTIBODY AGAINST HER2/erbB2

S/E----CARDIOTOXICITY

  #43

IMATINIB (GLEEVEC)----------

Philadelphia chromosome bcr-abl tyrosine kinase inhibitor

uses= CML , GI stromal tumors

S/E----- FLUID RETENTION

  #44

PACLITAXEL----------

ANAPHASE CANNOT OCCUR

S/E-------HYPERSENSITIVITY

  #45

1.Cyclophosphamide
2.Cisplatin/Carboplatin
3.busulphan
4.nitrosoureas

AREA LKYLATING AGENTS.

  #46

penicillin--------inhibit TRANSPEPTIDASE

NONCOMPETITIVE inhibition

S/E----1.hypersensitivity vasculitis=polyarteritis nodosa

2.warm autoimmune hemolytic anaemia=type 2

3.acute iterstitial nephritis=type 4 hypersensitivity

  #47

oil of wintergreen =high conc of aspirin

  #48

thankx








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