Osong Public Health and Research Perspectives

Hyun-Jeong Ko

3 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

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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.

Citations

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Intracellular translocation of HMGB1 is important for Zika virus replication in Huh7 cells
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Scientific Reports.2022;[Epub] CrossRef
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MSTN Attenuates Cardiac Hypertrophy through Inhibition of Excessive Cardiac Autophagy by Blocking AMPK /mTOR and miR-128/PPARγ/NF-κB
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Autophagy Augmentation to Alleviate Immune Response Dysfunction, and Resolve Respiratory and COVID-19 Exacerbations
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Cells.2020; 9(9): 1952. CrossRef

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

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Abstract 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.

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Direct-Acting Antivirals and Host-Targeting Approaches against Enterovirus B Infections: Recent Advances
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Antiviral Research.2022; 200: 105294. CrossRef
The Antifungal Itraconazole Is a Potent Inhibitor of Chikungunya Virus Replication
Lucca Policastro, Isabela Dolci, Andre Godoy, José Silva Júnior, Uriel Ruiz, Igor Santos, Ana Jardim, Kirandeep Samby, Jeremy Burrows, Timothy Wells, Laura Gil, Glaucius Oliva, Rafaela Fernandes
Viruses.2022; 14(7): 1351. CrossRef
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Eric Rhoden, Terry Fei Fan Ng, Ray Campagnoli, W. Allan Nix, Jennifer Konopka-Anstadt, Rangaraj Selvarangan, Laurence Briesach, M. Steven Oberste, William C. Weldon
Antimicrobial Agents and Chemotherapy.2020;[Epub] CrossRef
Potential antiviral properties of antifungal drugs
FalahH.O Al-Khikani, HudaA.S Almosawey, YounusJ Abdullah, AtyafA Al-Asadi, RaghdahM Hameed, NoorF Hasan, MohanadK.M Al-Ibraheemi
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Repurposing approach identifies new treatment options for invasive fungal disease
Isis Regina Grenier Capoci, Daniella Renata Faria, Karina Mayumi Sakita, Franciele Abigail Vilugron Rodrigues-Vendramini, Patricia de Souza Bonfim-Mendonça, Tania Cristina Alexandrino Becker, Érika Seki Kioshima, Terezinha Inez Estivalet Svidzinski, Berna
Bioorganic Chemistry.2019; 84: 87. CrossRef

Complete Sequence Analysis and Antiviral Screening of Medicinal Plants for Human Coxsackievirus A16 Isolated in Korea: Jae-Hyoung Song, Kwisung Park, Aeri Shim, Bo-Eun Kwon, Jae-Hee Ahn, Young Jin Choi, Jae Kyung Kim, Sang-Gu Yeo, Kyungah Yoon, Hyun-Jeong Ko; Osong Public Health Res Perspect. 2015;6(1):52-58. Published online February 28, 2015; DOI: https://doi.org/10.1016/j.phrp.2014.12.004

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Abstract PDF

Objectives
Coxsackievirus A group 16 strain (CVA16) is one of the predominant causative agents of hand, foot, and mouth disease (HFMD).
Methods
Using a specimen from a male patient with HFMD, we isolated and performed sequencing of the Korean CVA16 strain and compared it with a G10 reference strain. Also, we were investigated the effects of medicinal plant extract on the cytopathic effects (CPE) by CPE reduction assay against Korean CVA16.
Results
Phylogenetic analysis showed that the Korean CVA16 isolate belonged to cluster B-1 and was closely related to the strain PM-15765-00 isolated in Malaysia in 2000. The Korean CVA16 isolate showed 73.2% nucleotide identity to the G10 prototype strain and 98.7% nucleotide identity to PM-15765-00. Next, we assessed whether the Korean CVA16 isolate could be used for in vitro screening of antiviral agents to treat HFMD infection. Vero cells infected with the Korean CVA16 isolate showed a cytopathic effect 2 days after the infection, and the treatment of cells with Cornus officinalis, Acer triflorum, Pulsatilla koreana, and Clematis heracleifolia var. davidiana Hemsl extracts exhibited strong antiviral activity against CVA16.
Conclusion
Collectively, our work provides potential candidates for the development of vaccine and novel drugs to treat the CVA16 strain isolated from a Korean patient.

Citations

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