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Globular changes in cytomegaloviral inclusions after Ganciclovir treatment
Archives of Virology
|January 1, 1989
Abstract:
Ganciclovir treatment induced eosinophilic intranuclear globules and loss of DNA staining in pulmonary CMV-infected cells. Nuclear capsids contained ring-shaped cores. Cytoplasmic vacuoles contained altered, enveloped, mostly coreless viral particles.
Insights
Ganciclovir treatment caused changes in pulmonary cytomegalovirus (CMV)-infected cells, including intranuclear globules and altered viral particles. These findings offer insights into antiviral drug effects on viral morphology.
Area of Science:
- Virology
- Cell Biology
- Pathology
Background:
- Cytomegalovirus (CMV) is a significant opportunistic pathogen, particularly in immunocompromised individuals.
- Ganciclovir is a primary antiviral medication used to manage CMV infections.
- Understanding the in vivo effects of antiviral therapy on viral ultrastructure is crucial for evaluating drug efficacy and mechanisms.
Observation:
- Pulmonary cells infected with CMV and treated with ganciclovir exhibited intranuclear eosinophilic globules.
- A notable loss of DNA staining was observed within the nuclei of these infected cells.
- Viral nuclear capsids displayed unique ring-shaped cores.
Findings:
- Ganciclovir treatment induces distinct morphological alterations in CMV-infected pulmonary cells.
- The observed intranuclear changes suggest a disruption of viral DNA replication or packaging.
- Cytoplasmic vacuoles contained altered viral particles, often enveloped and lacking core structures, indicating potential degradation or assembly defects.
Implications:
- These ultrastructural changes provide a deeper understanding of ganciclovir's mechanism of action at the cellular level.
- The findings may inform the development of novel antiviral strategies targeting viral particle assembly or integrity.
- Detailed morphological analysis can aid in diagnosing and monitoring CMV infections and treatment responses.