Antivirals Flashcards
(30 cards)
Enfurvitide
Fusion inhibitor of CD4 cells
Treats influenza A/B
Oseltamivir, zanamivir
Emtricitabine
NRTI
BM suppression
NRTI
Lamivudine
NRTI
Treats CMV
Gancyclovir
CMV retinitis in ICH, acyclovir resistant HSV (after foscarnet): nephrotoxicity: inhibits viral DNA Polymerase; does not require phosphorylation
Cidofovir
Major toxicity: lipodystrophy
Protease inhibitors
Nevirapine
NNRTI: reduced maternal-fetal transmission
How does neuramidase inhibitors work?
prevents viral release
Indinavir
protease inhibitor -navir
Interferon (PEG)
Alpha: chronic hepB/C, Kaposi’s sarcoma; beta: MS gamma: NADPH Oxidase deficiency SE: neutropenia glycoproteins from human leukocytes block viral RNA/DNA synthesis (induce nuclease that degrade viral mRNA
Amantadine
Influenza A (neurologic SE: interferes with viral protein M2 required for uncoating)
CMV (especially ICH): viral kinase phosphorylates guanosine analog inhibiting viral DNA polymerase HEMATOLOGIC SE (neutropenia/leucopenia)
Ganciclovir
HepC, RSV, hemorrhagic fever: SE anemia and teratogen; inhibits synthesis of G nt by inhibiting IMP dehydrogenase
Ribavirin
Efavirenz
NNRTI
Lactic acidosis toxicity
NRTI
NRTI pancreatitis
Didanosine
Steven-Johnson syndrome toxicity
NNRTI
Tenofovir
NRTI: doesn’t need to be phosphorylated
Influenza A: neurologic SE, interferes with viral protein M2 required for uncoating
Rimantadine
Better oral availability than acyclovir: NOT CNS-thymidine kinase (by virus) phosphorylates guanosine analog inhibiting viral DNA polymerase
Valacyclovir
Zidovudine
NRTI: (AZT): reduce maternal-fetal transmission
HSV/VZV (PO: genital, IV: encephalitis): thymidine kinase (by virus) phosphorylates guanosine analog inhibiting viral DNA polymerase; RENAL CNS SE
Acyclovir