C / 5 - herpes, varicella, cytomegalovirus, influenza, corona Flashcards
When do antiviral drugs act best?
During the acute phase of viral infection
Agents used against HSV 1-2 and VZV?
Acyclovir
Acyclovir
- MOA
- Spectrum
- ROA
- Toxicity
- Guanosine analog : inhibits viral DNA polymerase
- HSV1, HSV2, VSZ, it can also be used in IV formulation for HSV encephalitis
- IV, oral, topical
- Well tolerated : GI symptoms, headache
Which virus is CMV?
it is herpes virus 5
Agents which can be used against CMV?
- Ganciclovir
- Foscarnet
- Letermovir
(Let’s fucking go)
Ganciclovir
- MOA
- Spectrum
- ROA
- Toxicity
- Deoxy-guanosine analog : inhibits viral DNA polymerase
- CMV
- IV
- Neutropenia, teratogenic
Foscarnet
- MOA
- Spectrum
- Indication
- ROA
- Toxicity
- Pyrophosphate analog, inhibits viral RNA and DNA polymerase
- CMV
- CMV retinitis in HIV/AIDS patients
- IV
- Nephrotoxicity, bone alterations, decreased Hb
(FOScarnet : pyroPHOSphate)
Letermovir
- MOA
- Spectrum
- Indication
- ROA
- Toxicity
- Inhibits terminase complex (cleavage of DNA after replication)
- CMV
- Prophylaxis for bone marrow transplant
- Oral, IV
- Headache, malaise (well tolerated)
(leTERMovir : TERMinase complex)
Agents used against RSV
- Palivizumab
- Ribavirin
Palivizumab
- MOA
- Spectrum
- Indication
- ROA
- Monoclonal AB against RSV
- RSV
- Prophylaxis in immunocompromised children in RSV season
- Intramuscular monthly
Ribavirin
- MOA
- Spectrum
- Indication
- ROA
- Toxicity
- Guanosine analog, inhibits viral RNA polymerase
- Broad spectrum (HSV, VSZ, influenza, RSV)
- Immunocompromised children with severe RSV
- Oral, aerosol
- Drug induced hemolytic anemia, teratogenic
Anti-influenza agents
Oseltamivir
Oseltamivir
- MOA
- Spectrum
- ROA
- Toxicity
- Inhibits neuraminidase, so virus cannot infect new cells
- Influenza A + B
- Oral
- GI symptoms
Drugs used against corona
- Remdesivir
- Molnupiravir
- Nirmatrelvir
Remdesivir
- MOA
- Spectrum
- Indication
- ROA
- RNA dependant RNA polymerase inhibitor
- Ebola, hepatitis C, corona
- For medium severity patients, with no cytokine storm
- IV