The molecular basis of the cytopathic effect induced in cell culture by some hepatitis A virus (HAV) strains and variants has not been determined. In order to assess the molecular mechanism(s) underlying this particular phenotype the genome of an Italian cytopathic isolate (strain FG) was sequenced from cDNAs obtained by RT-PCR. Sequence analysis revealed the presence of mutations common to either adapted or cytopathic variants of HAV. In particular, amino acid deletions in proteins VP1 and 3A were detected. Expression of protein 3A in E. coli showed that the N-terminal deletion renders this protein toxic to bacteria.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1016/0168-1702(95)00009-f | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Homeobox protein MSX-1 restricts hepatitis B virus by promoting ubiquitin-independent proteasomal degradation of HBx protein.
PLoS Pathog
January 2025
Department of Infectious Diseases, Shanghai Institute of Infectious Diseases and Biosecurity, Shanghai Key Laboratory of Infectious Diseases and Biosafety Emergency Response, National Medical Center for Infectious Diseases, Huashan Hospital, Fudan University, Shanghai, China.
Hepatitis B virus (HBV) X protein (HBx) is a key factor for regulating viral transcription and replication. We recently characterized homeobox protein MSX-1 (MSX1) as a host restriction factor that inhibits HBV gene expression and genome replication by directly binding to HBV enhancer II/core promoter (EnII/Cp) and suppressing its promoter and enhancer activities. Notably, HBx expression was observed to be repressed more drastically by MSX1 compared to other viral antigens.
View Article and Find Full Text PDFProphylaxis of HBV reinfection and disease in liver transplanted patients: 2024 update on the role of HBIG and cost-effectiveness evaluation.
Minerva Gastroenterol (Torino)
January 2025
Gastroenterology Department of Emergency and Organ Transplantation, University Hospital Policlinico di Bari, Bari, Italy.
Hepatitis B virus (HBV) infection is a major global health concern, with liver transplantation (LT) serving as a critical treatment for end-stage liver disease caused by HBV. However, the risk of HBV reinfection after LT remains significant, necessitating effective prophylaxis. Today, the combination of hepatitis B immune globulin (HBIG) and high-barrier nucleos(t)ide analogues (NUCs) is the standard of care for preventing HBV recurrence post-LT but concerns about the cost of HBIG and access to high-barrier NUCs have led to a reduction in the use, dose, and duration of HBIG in recent years.
View Article and Find Full Text PDFAcute kidney injury and ANCA positivity in a patient treated with glecaprevir/pibrentasvir: a case report.
Front Med (Lausanne)
January 2025
Department of Pathology, Montefiore Medical Center, Bronx, NY, United States.
Background: Glecaprevir/pibrentasvir is an effective antiviral therapy for hepatitis C virus infection and is generally regarded safe in patients with renal impairment. However, renal complications are a notable, albeit rare, concern.
Case Presentation: We report a case of acute kidney injury in a man in his 50s with chronic hepatitis C virus, chronic obstructive pulmonary disease, morbid obesity, a history of heroin dependence, and untreated type 2 diabetes mellitus.
Differences in the intrahepatic expression of immune checkpoint molecules on T cells and natural killer cells in chronic HBV patients.
Front Immunol
January 2025
Univ. Grenoble Alpes, Inserm U 1209, CNRS UMR 5309, Institute for Advanced Biosciences, Grenoble, France.
Background: Patients with chronic hepatitis B virus (HBV) infection are characterized by impaired immune response that fails to eliminate HBV. Immune checkpoint molecules (ICMs) control the amplitude of the activation and function of immune cells, which makes them the key regulators of immune response.
Methods: We performed a multiparametric flow cytometry analysis of ICMs and determined their expression on intrahepatic lymphocyte subsets in untreated and treated patients with HBV in comparison with non-pathological liver tissue.
The neutrophil-lymphocyte ratio as a risk factor for all-cause mortality among individuals with resolved HBV infection: evidence from the NHANES 1999-2018.
Front Public Health
January 2025
Second Clinical Medical College, Guangzhou University of Chinese Medicine, Guangzhou, China.
Background: Inflammation is a critical component in the process of resolved hepatitis B virus (HBV) infection. The neutrophil-to-lymphocyte ratio (NLR) serves as a sensitive indicator of systemic inflammation and immune activation. Our study aimed to investigate the correlation between elevated NLR levels and the risk of all-cause mortality in patients with resolved HBV infection.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!