Ganciclovir: Difference between revisions

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== Background ==
* Guanosine nucleoside analogue similar to acyclovir

* Inhibits all [[human herpesviruses]] by inhibiting DNA polymerase
*Guanosine nucleoside analogue similar to acyclovir
*Indications: {{#ask: [[Is treated by::ganciclovir]] | default=none}}

=== Mechanism of Action ===

*Analog of deoxyguanosine, competes with deoxyguanosine to inhibit viral DNA polymerase

=== Mechanisms of Resistance ===

*Resistance in [[CMV]]
**Most often conferred by mutations of UL97 kinase, which is required in order to phosphorylate ganciclovir into its active form
**Can also develop through mutations in the target UL54 DNA polymerase

=== Spectrum of Activity ===

* Active against [[HSV-1]], [[HSV-2]], [[VZV]], [[CMV]], [[HHV-6]], and [[HHV-8]]

=== Pharmacokinetics and Pharmacodynamics ===

*Oral bioavailability 6-8%

== Safety ==

* Major toxicity is cytopenias
* Major toxicity is cytopenias
* Resistance in [[CMV]]
** Most often conferred by mutations of UL97 kinase, which is required in order to phosphorylate ganciclovir into its active form
** Can also develop through mutations in the target UL54 DNA polymerase
* Oral bioavailability 6-8%
* Indications: {{#ask: [[Is treated by::ganciclovir]] | default=none}}


[[Category:Antivirals]]
[[Category:Antivirals]]

Revision as of 01:14, 12 September 2020

Background

Mechanism of Action

  • Analog of deoxyguanosine, competes with deoxyguanosine to inhibit viral DNA polymerase

Mechanisms of Resistance

  • Resistance in CMV
    • Most often conferred by mutations of UL97 kinase, which is required in order to phosphorylate ganciclovir into its active form
    • Can also develop through mutations in the target UL54 DNA polymerase

Spectrum of Activity

Pharmacokinetics and Pharmacodynamics

  • Oral bioavailability 6-8%

Safety

  • Major toxicity is cytopenias