Ganciclovir: Difference between revisions

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== Background ==
* Guanosine nucleoside analogue similar to acyclovir
 
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* Inhibits all [[human herpesviruses]] by inhibiting DNA polymerase
 
 
*Guanosine nucleoside analogue similar to acyclovir
 
*Indications: {{#ask: [[Is treated by::ganciclovir]] | default=none}}
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=== Mechanism of Action ===
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*Analog of deoxyguanosine, competes with deoxyguanosine to inhibit viral DNA polymerase
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=== Mechanisms of Resistance ===
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*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
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=== Spectrum of Activity ===
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* Active against [[HSV-1]], [[HSV-2]], [[VZV]], [[CMV]], [[HHV-6]], and [[HHV-8]]
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=== Pharmacokinetics and Pharmacodynamics ===
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*Oral bioavailability 6-8%
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== Safety ==
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* 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 21:14, 11 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