About half a billion people worldwide are infected with herpes simplex virus-2 (HSV-2). Prolonged treatment with acyclovir (ACV) and its analogs leads to the development of resistant strains. The aim of this study was to investigate the antiviral potential of epigallocatechin gallate (EGCG) from and a stable analog EGCG-stearate (EGCG-S) against HSV-2 in cultured Vero cells. Cell viability and cell proliferation assays were used to determine the non-cytotoxic concentrations on cultured Vero cells. HSV-2 with a green fluorescent protein (GFP) fusion protein of VP26 virions were treated with non-cytotoxic concentrations of EGCG and EGCG-S. The effects on infectivity and mechanisms were determined by plaque assay, attachment and penetration assays, confocal microscopy, qPCR, and in silico modeling analysis. Our results demonstrate that treatment of HSV-2 virions with EGCG and EGCG-S at a concentration of 75 µM showed greater than 99.9% inhibition by inhibiting the attachment of HSV-2 virions to host cells. The bioinformatic analysis indicated high binding affinity of EGCG-S for glycoprotein D; thus EGCG-S may block fusion of HSV-2 and the cell membrane, preventing entry of HSV-2 into the cell.
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http://dx.doi.org/10.3390/microorganisms10071462 | DOI Listing |
ACG Case Rep J
January 2025
Stony Brook Medicine, Department of Medicine, Division of Gastroenterology and Hepatology, Stony Brook University Hospital, Stony Brook, NY.
Although herpes simplex virus, Epstein-Barr virus, and hemophagocytic lymphohistiocytosis are known causes of severe acute liver injury with or without liver failure, these diseases occur almost exclusively in immunocompromised and elderly patients. We report a case of an immunocompetent young man with no medical history who presented with a subacute cough and persistent fevers in the setting of a penile chancre. He was found to have severely elevated liver chemistries and was subsequently diagnosed with hemophagocytic lymphohistiocytosis because of disseminated herpes simplex virus type 1 and Epstein-Barr virus coinfection.
View Article and Find Full Text PDFArch Virol
January 2025
Departamento de Biología, Bioquímica y Farmacia, Universidad Nacional del Sur-Bahía Blanca, Buenos Aires, Argentina.
Neurodegenerative pathologies such as age-related macular degeneration currently have no cure or effective treatment. In this type of disease, the presence of amyloid-β peptides, oxidative stress, and inflammation trigger dysregulation of retinal pigment epithelial cells and progression toward the death of these cells, resulting in a loss of vision. The production of amyloid-β peptides, oxidative stress, and inflammation can be triggered in response to viral infections.
View Article and Find Full Text PDFCell Mol Life Sci
January 2025
School of Basic Medical Sciences, Xinxiang Medical University, #601 Jinsui Road, Xinxiang, 453003, Henan, China.
Rev Med Chil
June 2024
Departamento de Gastroenterología, Escuela de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile.
Liver transplantation (LT) is a cost-effective therapy for advanced liver disease. Although LT significantly improves long-term survival, it requires strict control of immunosuppressants and their potential complications. Several available immunosuppressive drugs include glucocorticoids, calcineurin inhibitors, mycophenolate, mTOR inhibitors, and anti-CD25 antibodies.
View Article and Find Full Text PDFCureus
December 2024
Internal Medicine, One Brooklyn Health, New York, USA.
We present a case report of a 72-year-old female with a history of stage III rectal adenocarcinoma undergoing chemotherapy who developed neutropenic sepsis and acute respiratory failure. The patient was admitted to the intensive care unit (ICU) due to worsening respiratory status and was subsequently diagnosed with disseminated herpes simplex virus (HSV) infection including acute respiratory distress syndrome (ARDS). This case highlights the challenges in diagnosing and managing HSV infection in critically ill patients and emphasizes the importance of early recognition and appropriate treatment in improving patient outcomes.
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