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Jae-Sug Lee 2 Articles
Anti-Human Rhinovirus 1B Activity of Dexamethasone viaGCR-Dependent Autophagy Activation
Jae-Sug Lee, Seong-Ryeol Kim, Jae-Hyoung Song, Yong-Pyo Lee, Hyun-Jeong Ko
Osong Public Health Res Perspect. 2018;9(6):334-339.   Published online December 31, 2018
DOI: https://doi.org/10.24171/j.phrp.2018.9.6.07
  • 2,565 View
  • 60 Download
  • 4 Citations
AbstractAbstract PDF
Objectives

Human rhinoviruses (HRVs) are the major cause of the common cold. Currently there is no registered, clinically effective, antiviral chemotherapeutic agent to treat diseases caused by HRVs. In this study, the antiviral activity of dexamethasone (DEX) against HRV1B was examined.

Methods

The anti–HRV1B activity of DEX was assessed by sulforhodamine B assay in HeLa cells, and by RT-PCR in the lungs of HRV1B-infected mice. Histological evaluation of HRV1B-infected lungs was performed and a histological score was given. Anti-HRV1B activity of DEX via the glucocorticoid receptor (GCR)-dependent autophagy activation was assessed by blocking with chloroquine diphosphate salt or bafilomycin A1 treatment.

Results

In HRV1B-infected HeLa cells, treatment with DEX in a dose-dependent manner, resulted in a cell viability of > 70% indicating that HRV1B viral replication was reduced by DEX treatment. HRV1B infected mice treated with DEX, had evidence of reduced inflammation and a moderate histological score. DEX treatment showed antiviral activity against HRV1B via GCR-dependent autophagy activation.

Conclusion

This study demonstrated that DEX treatment showed anti-HRV1B activity via GCR-dependent autophagy activation in HeLa cells and HRV1B infected mice. Further investigation assessing the development of topical formulations may enable the development of improved DEX effectiveness.

Antiviral Activity of Itraconazole against Echovirus 30 Infection In Vitro
Jae-Sug Lee, Hwa-Jung Choi, Jae-Hyoung Song, Hyun-Jeong Ko, Kyungah Yoon, Jeong-Min Seong
Osong Public Health Res Perspect. 2017;8(5):318-324.   Published online October 31, 2017
DOI: https://doi.org/10.24171/j.phrp.2017.8.5.05
  • 2,451 View
  • 23 Download
  • 5 Citations
AbstractAbstract PDF
Objectives

Echovirus 30 is a major cause of meningitis in children and adults. The aim of this study was to investigate whether the antifungal drug itraconazole could exhibit antiviral activity against echovirus 30.

Methods

The cytopathic effect and viral RNA levels were assessed in RD cells as indicators of viral replication. The effects of itraconazole were compared to those of two known antiviral drugs, rupintrivir and pleconaril. The time course and time-of-addition assays were used to approximate the time at which itraconazole exerts its activity in the viral cycle.

Results

Itraconazole and rupintrivir demonstrated the greatest potency against echovirus 30, demonstrating concentration-dependent activity, whereas pleconaril showed no antiviral activity. Itraconazole did not directly inactivate echovirus 30 particles or impede viral uptake into RD cells, but did affect the initial stages of echovirus 30 infection through interference with viral replication.

Conclusion

Itraconazole can be considered a lead candidate for the development of antiviral drugs against echovirus 30 that may be used during the early stages of echovirus 30 replication.


PHRP : Osong Public Health and Research Perspectives