Anti-infective Drugs 1b - Antivirals Flashcards
Common Non-HIV Viral Infections (6)
- Herpes Simplex (oral-facial, genital, encephalitis)
- Varicella-Zoster
Chickenpox (varicella)
Shingles (herpes zoster) - Cytomegalovirus
- Hep B, C, and D
- Respiratory Synctial Virus (RSV)
- Influenza A & B
Non-HIV Antiviral Classification: Herpes Simplex and Herpes Zoster Antivirals (4)
Nucleoside analogs
- Acyclovir
- Valacyclovir
- Famciclovir
- Penciclovir
Non-HIV Antiviral Classification: CMV Antivirals (2)
Nucleoside analogs that require activation by viral kinase
- Ganciclovir
- Valganciclovir
Non-HIV Antiviral Classification: Others for CMV Antivirals (2)
- Foscarnet
- Cidofovir
When CMV is ganciclovir resistant
Activation not required
Non-HIV Antiviral Classification: Hepatitis B and C Antivirals (3)
- Nucleotide/nucleoside analogs
- Interferon alfa
- Ribavirin
Non-HIV Antiviral Classification: Neuramididase inhibitors for influenza (2)
- Oseltamivir (Tamiflu)
2. Zanamivir (Relenza)
Non-HIV Antiviral Classification: Adamatanes for influenza (2)
- Amantadine
2. Rimantadine
Antiretroviral Drug Classification for HIV Infection (5)
- Nucleoside/Nucleotide Reverse Transcriptase Inhibitors (NRTI)
- Non-Nucleoside Reverse Transcriptase Inhibitors (NNRTI)
- Protease Inhibitors (PI)
- Entry and Fusion and Inhibitors
- Integrase Inhibitor
Antiretroviral Drug Therapy Issues (5)
- Multiple drug therapy combinations
- Significant adverse reactions
- Multiple drug-drug interactions
- between antiretroviral drugs
- with many other drugs used by HIV patient s
- High cost
- Adherence
Antiviral Drugs MOA 1 and Drugs (3)
- Inhibition of viral penetration and uncoating
- Amantadine
- Rimantadine
Antiviral Drugs MOA 2 and Drugs (4)
- Inhibition of Viral DNA Polymerase
- Acyclovir
- Gancyclovir
- Famcyclovir
- Valacyclovir
Antiviral Drugs MOA 3 and Drugs (1)
- Inhibition of Viral DNA and RNA Polymerase
Foscarnet
Antiviral Drugs MOA 4 and Drugs (1)
- Inhibition of viral RNA polymerase
Ribavirn
Antiviral Drugs MOA 5 and Drugs (6)
- Inhibition of Viral Reverse Transcriptase
- Zidovudine
- Didanosine
- Zalcitabine
- Stavudine
- Lamivudine
- Nevirapine
Antiviral Drugs MOA 6 and Drugs (4)
- Inhibition of Viral Aspartate Protease
- Indinavir
- Ritonavir
- Saquinavir
- Nelfinavir
Antiviral Drugs MOA 7 and Drugs (2)
- Inhibition of Viral Neuraminidase
- Zanamivir
- Oseltamivir
Clinical Antiviral Drugs: Amantadine - MOA
Interfere with the attachment, penetration, and uncoating of the viral particle
Clinical Antiviral Drugs: Amantadine - Indications (2)
- Influenza A
2. Parkinson’s Disease
Clinical Antiviral Drugs: Amantadine - Side Effects (2)
- Livedo reticularis
1. Anticholinergic effects
Clinical Antiviral Drugs: Ribavirin - MOA (2)
- Inhibits viral RNA polymerase
2. Inhibits end capping of viral mRNA
Clinical Antiviral Drugs: Ribavirin- Indications (1)
RSV
Clinical Antiviral Drugs: Ribavirin - Side Effects (1)
Teratogenic
Clinical Antiviral Drugs: Acyclovir - MOA
Inhibits viral DNA polymerase
Clinical Antiviral Drugs: Acyclovir - Resistance
Decrease activity to viral thymidylate kinase
Clinical Antiviral Drugs: Acyclovir - Indications (3)
- Herpes Simplex
- Varicella zoster (shingles)
- Not effective in CMV infections
Clinical Antiviral Drugs: Acyclovir - Side Effects (2)
- Nephropathy (IV only)
2. Neurotoxicity and Crystalluria
Clinical Antiviral Drugs: Famiciclovir and Valacyclovir
Newly FDA approved for herpes simplex
Similar to acyclovir
Clinical Antiviral Drugs: Ganciclovir - Buzzword
Rx of CMV (phosphotransferase)
Viral thymidylate kinase in herpes
Clinical Antiviral Drugs: Ganciclovir - MOA
Similar to acyclovir:
Inhibits viral DNA polymerase
Clinical Antiviral Drugs: Ganciclovir - Side Effects (3)
- Leukopenia, thrombocytopenia
- Seizure in overdose
- Crystalluria