L29 Antivirals Flashcards
Enfuvirtide disease
HIV
Enfuvirtide path
blocks refolding of gp41
Inhibits membrane fusion for ENTRY
Amantadine disease
infuenza
Amantadine path
blocks M2 ion channel
preventing nucleocapsid release at end of ENTRY (uncoating)
Rimantadine disease
influenza
Rimantadine path
blocks M2 ion channel
preventing nucleocapsid release at end of ENTRY (uncoating)
Acyclovir disease
herpes
Most effective against HSV1,2
Acyclovir type
nucleoside analogue preventing REPLICATION (nucleic acid synthesis)
Acyclovir specificity depends on
Virus thymadine kinase
Ganciclovir disease
CMV
Gangciclovir vs Acyclovir
Works on CMV but more toxic due to cellular kinases
Valganciclovir vs Acyclovir
Both treat HSV but has improved bioavailability
Acyclovir hurdles
Bioavailability
Specificiity on virus Thymadine Kinase
Foscarnet disease
Herpes
Foscarnet path
Prevent viral polymerase activity preventing REPLICATION (nucleic acid synthesis)
Foscarnet downfalls
IV administration
Toxic
Nucleoside inhibitors for HIV and HepB negatives
Toxic
Resistance
Usually includes more than one
Ribavarin disease
RNA viruses
Ribavarin mechanisms
Triphosphate inhibits polymerase
Monophasphate inhibits inosine monophosphate dh
Impaires capping of mRNA
Ritonavir disease
HIV
Ritonavir path
Block Gag-Pol cleavage
Boosts protease inhibitors
Prevents PROTEASE (late protein processing)
How to prevent virus release
Neuraminidase inhibitors
Bioavailability components
Absorption into body
Transport to site
Intake by cell
Half life
Neuraminidase inhibitor disease
Influenza..virus release