Antivirals Flashcards
Anti-herpes drug used for HSV-1,2 and VZV infections?
Acyclovir
Acyclovir activity dependent on this enzyme?
Thymidine kinase (TK) Activate drug to inhibit DNA polymerase
Antiviral that inhibits DNA polymerase causing chain termination, used for CMV, HSV-1,2 and VZV infections?
Gancyclovir
Gancyclovir AE?
Leukopenia, Thrombocytopenia
Antiviral for CMV retinitis (MCC of blindness in ICC)?
Cidofovir
Active against HSV even without thymidine kinase
Antiviral that binds to pyrophosphate binding site, also used for CMV retinitis and HSV in ICC?
Foscarnet
FOScarnet = pyroFOSphate analog
Foscarnet AE?
Nephrotoxic
Hypocalcemia
HAART composed of?
2 NRTIs and 1 protease inhibitor
Nucleoside reverse transcriptase inhibitor (NRTI) that prevents maternal-fetal HIV transmission?
Zidovudine
“Zito ka lang! (Dito)”
Zidovudine AE?
Lactic acidosis
Hepatic steatosis
NNRTI also used for HIV?
Delavirdine
No phosphorylation needed to activate drug
Examples of NNRTI?
Never Ever Deliver
Nevirapine
Efabirenz
Delavudine
Protease inhibitor used for HIV that causes hypergly, insulin resistance, hyperlipidemia and fat redistribution?
Indinavir
Also cause acanthosis nigricans
“Navir tease a proTEASE”
Fusion inhibitor used for HIV?
Enfuvirtide
Enfuvirtide MOA?
Bind to gp41, prevent fusion of viral and cellular membranes
“En-fuse”
CCR5 receptor antagonist that block viral attachment also used for HIV infection?
Maraviroc
Anti-influenza that is also used for Parkinsonism?
Amantadine
Influenza A only
Amantadine causes what effect on the skin?
Livedo reticularis
Cerebellar dysfunction
Anti-influenza that inhibits neuraminidase used to shorten duration of symptoms of and is the DOC for influenza A and B?
Oseltamivir
DOC for HBV infection?
Interferon alpha + Lamivudine
DOC for HCV?
Interferon alpha + Ribavirin
Lamivudine, coupled with HBV and HIV co-infection, can increase the risk of?
Pancreatitis
MCC of viral URTI?
RSV
Antiviral that blocks RNA polymerases used for HCV and RSV?
Ribavarin
Ribavarin AE? What is avoided with early administration of the drug?
Hemolytic anemia (positive Coombs) West nile, Ebola virus