Viruses-Basel最新文献

{"title":"Evaluation of Cognitive Functions in People Living with HIV Before and After COVID-19 Infection.","authors":"Dimtrios Basoulis, Elpida Mastrogianni, Irene Eliadi, Nikolaos Platakis, Dimitris Platis, Mina Psichogiou","doi":"10.3390/v17010135","DOIUrl":"10.3390/v17010135","url":null,"abstract":"<p><strong>Background: </strong>Cognitive function decline is a problem in aging people living with HIV (PLWHIV). COVID-19 infection is associated with neuropsychiatric manifestations that may persist. The aim of our study was to evaluate cognitive function in PLWHIV before and after COVID-19 infection.</p><p><strong>Methods: </strong>This was a prospective observational study conducted at \"Laiko\" General Hospital from July 2019 to July 2024. The Montreal Cognitive Assessment (MOCA) scale was used to evaluate cognitive functions.</p><p><strong>Results: </strong>116 virally suppressed PLWHIV participated (mean age: 47.6 years, 91.4% male); 60 underwent repeated evaluation after the pandemic at a median interval of 3.1 years. The median MOCA score was 24 (22-26), with 35.3% scoring within normal limits. A negative correlation was observed between MOCA scores and age (ρ = -0.283, <i>p</i> = 0.002), but not with a CD4 count at diagnosis (ρ = 0.169, <i>p</i> = 0.071) or initial HIV RNA load (ρ = 0.02, <i>p</i> = 0.984). In the subgroup with repeated testing, MOCA was correlated with the CD4 count (ρ = 0.238, <i>p</i> = 0.069 in the first and ρ = 0.319, <i>p</i> = 0.014 second test). An improvement in performance was observed (median score increase from 24 to 25, <i>p</i> = 0.02).</p><p><strong>Conclusions: </strong>MOCA can detect early changes in cognitive function in PLWHIV. Further studies are required to determine the role of COVID-19 over time.</p>","PeriodicalId":49328,"journal":{"name":"Viruses-Basel","volume":"17 1","pages":""},"PeriodicalIF":3.8,"publicationDate":"2025-01-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11769327/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143042957","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Transcytosis of T4 Bacteriophage Through Intestinal Cells Enhances Its Immune Activation.","authors":"Amanda Carroll-Portillo, October Barnes, Cristina N Coffman, Cody A Braun, Sudha B Singh, Henry C Lin","doi":"10.3390/v17010134","DOIUrl":"10.3390/v17010134","url":null,"abstract":"<p><p>Interactions between bacteriophages with mammalian immune cells are of great interest and most phages possess at least one molecular pattern (nucleic acid, sugar residue, or protein structure) that is recognizable to the immune system through pathogen associated molecular pattern (PAMP) receptors (i.e., TLRs). Given that phages reside in the same body niches as bacteria, they share the propensity to stimulate or quench immune responses depending on the nature of their interactions with host immune cells. While most in vitro research focuses on the outcomes of direct application of phages to immune cells of interest, the potential impact of their transcytosis through the intestinal barrier has yet to be considered. As transcytosis through intestinal cells is a necessary step in healthy systems for access by phage to the underlying immune cell populations, it is imperative to understand how this step may play a role in immune activation. We compared the activation of macrophages (as measured by TNFα secretion) following direct phage application to those stimulated by incubation with phage transcytosed through a polarized Caco2 epithelial barrier model. Our results demonstrate that phages capable of activating TNFα secretion upon direct contact maintain the stimulatory capability following transcytosis. Furthermore, activation of macrophages by a transcytosed phage is enhanced as compared to that occurring with an equivalent multiplicity of directly applied phage.</p>","PeriodicalId":49328,"journal":{"name":"Viruses-Basel","volume":"17 1","pages":""},"PeriodicalIF":3.8,"publicationDate":"2025-01-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11769353/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143043028","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Herpesvirus Infections After Chimeric Antigen Receptor T-Cell Therapy and Bispecific Antibodies: A Review.","authors":"Joseph Sassine, Emily A Siegrist, Roy F Chemaly","doi":"10.3390/v17010133","DOIUrl":"10.3390/v17010133","url":null,"abstract":"<p><p>In this narrative review, we explore the burden and risk factors of various herpesvirus infections in patients receiving chimeric antigen receptor T-cell (CAR-T) therapy or bispecific antibodies (BsAb) for the treatment of hematologic malignancies. Antiviral prophylaxis for herpes simplex/varicella zoster viruses became part of the standard of care in this patient population. Breakthrough infections may rarely occur, and the optimal duration of prophylaxis as well as the timing of recombinant zoster immunization remain to be explored. Clinically significant cytomegalovirus (CMV) infections can affect up to 10% of patients after CAR-T, depending on the CAR-T product target, post-CAR-T complications such as cytokine release syndrome and the need for glucocorticoid therapy. Surveillance and prophylactic strategies for CMV need to be developed, whereas the risk factors for and the burden of CMV infections after BsAb are not yet well-defined. Human herpes virus 6 reactivation and end organ disease such as encephalitis are rarely reported after CAR-T and have not yet been reported after BsAb; additional research is needed.</p>","PeriodicalId":49328,"journal":{"name":"Viruses-Basel","volume":"17 1","pages":""},"PeriodicalIF":3.8,"publicationDate":"2025-01-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11768728/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143042711","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Interferon-Stimulated Genes and Immune Metabolites as Broad-Spectrum Biomarkers for Viral Infections.","authors":"Chien-Hsin Huang, Maudry Laurent-Rolle, Tyler L Grove, Jack Chun-Chieh Hsu","doi":"10.3390/v17010132","DOIUrl":"10.3390/v17010132","url":null,"abstract":"<p><p>The type I interferon (IFN-I) response is a critical component of the immune defense against various viral pathogens, triggering the expression of hundreds of interferon-stimulated genes (ISGs). These ISGs encode proteins with diverse antiviral functions, targeting various stages of viral replication and restricting infection spread. Beyond their antiviral functions, ISGs and associated immune metabolites have emerged as promising broad-spectrum biomarkers that can differentiate viral infections from other conditions. This review provides an overview of the diagnostic potential of ISGs at transcript and protein levels, as well as their immune metabolites. We focus on their clinical applications and the sensitivity and specificity of these biomarkers through receiver operating characteristic (ROC) analysis. We highlight the need for further research to facilitate the effective translation of these biomarkers into clinical practice.</p>","PeriodicalId":49328,"journal":{"name":"Viruses-Basel","volume":"17 1","pages":""},"PeriodicalIF":3.8,"publicationDate":"2025-01-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11768885/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143042780","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Additive Effects of Glutathione in Improving Antibiotic Efficacy in HIV-<i>M.tb</i> Co-Infection in the Central Nervous System: A Systematic Review.","authors":"Leena Nabipur, Michael Mouawad, Vishwanath Venketaraman","doi":"10.3390/v17010127","DOIUrl":"10.3390/v17010127","url":null,"abstract":"<p><strong>Background: </strong>HIV and tuberculosis (TB) co-infection poses a significant health challenge, particularly when involving the central nervous system (CNS), where it leads to severe morbidity and mortality. Current treatments face challenges such as drug resistance, immune reconstitution inflammatory syndrome (IRIS), and persistent inflammation. Glutathione (GSH) has the therapeutic potential to enhance treatment outcomes by improving antibiotic efficacy, reducing inflammation, and mitigating immune dysfunction.</p><p><strong>Methods: </strong>Relevant studies were identified through systematic searches of PubMed, Elsevier, WHO, and related databases. Inclusion criteria focused on preclinical and clinical research examining GSH or its precursors in HIV, TB, or co-infection, with emphasis on microbial control, immune modulation, and CNS-related outcomes.</p><p><strong>Results: </strong>Preclinical studies showed that GSH improves macrophage antimicrobial function, reduces oxidative stress, and limits <i>Mycobacterium tuberculosis</i> (<i>M.tb</i>) growth. Animal models demonstrated reduced bacterial burden in the lungs, liver, and spleen with GSH supplementation, along with enhanced granuloma stability. Clinical studies highlighted increased TH1 cytokine production, reduced inflammatory markers, and improved CD4+ T cell counts in HIV-<i>M.tb</i> co-infected patients. N-acetylcysteine (NAC), a GSH precursor, was shown to significantly enhance the efficacy of first-line TB antibiotics and mitigate treatment-associated toxicity.</p><p><strong>Discussion: </strong>GSH shows promise as an adjunct therapy for HIV-<i>M.tb</i> co-infection, particularly for cases involving the CNS, where it may improve immune recovery and reduce inflammation. However, evidence is limited by small sample sizes and a lack of randomized trials. Future research should focus on developing CNS-directed GSH formulations and evaluating its integration into current treatment protocols to address the dual burden of HIV and TB, ultimately improving patient outcomes.</p>","PeriodicalId":49328,"journal":{"name":"Viruses-Basel","volume":"17 1","pages":""},"PeriodicalIF":3.8,"publicationDate":"2025-01-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11769047/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143042777","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Domestic Dogs Exposed to Orthopoxvirus in Urban Areas of Brazil.","authors":"Débora de Meneses, Ana G Stoffella-Dutra, Vicenzo S Blaso, Iara M de Almeida, Karolina L Dias, Iago José da S Domingos, Gabriela P Ribeiro, Wendel Coura-Vital, Alexandre B Reis, Thallyta M Vieira, Giliane de S Trindade","doi":"10.3390/v17010131","DOIUrl":"10.3390/v17010131","url":null,"abstract":"<p><p>Domestic animals can share viral pathogens with humans, acting mainly as a bridge host. The <i>Orthopoxvirus</i> genus hosts important zoonotic species that have emerged in urban areas worldwide. Nevertheless, the role of companion animals, such as dogs and cats, in the circulation of orthopoxviruses in urban areas remains poorly understood. Therefore, the objective of this study was to evaluate the presence of neutralizing anti-orthopoxvirus antibodies in serum samples from owned dogs from three municipalities in Minas Gerais, as well as the presence of the C11R and A56R orthopoxviruses genes. The presence of neutralizing antibodies was detected in 14.3% of the animals investigated. However, no sample was positive for the presence of the genes investigated. Further study of the population of dogs in urban areas may prove a valuable tool for understanding the spread of orthopoxviruses in urbanized areas of Brazil.</p>","PeriodicalId":49328,"journal":{"name":"Viruses-Basel","volume":"17 1","pages":""},"PeriodicalIF":3.8,"publicationDate":"2025-01-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11768714/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143042992","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Screening of Insertion Sites and Tags on EV-A71 VP1 Protein for Recombinant Virus Construction.","authors":"Miaomiao Kang, Xiangyi Li, Xiaohong Li, Rui Yu, Shuo Zhang, Jingjing Yan, Xiaoyan Zhang, Jianqing Xu, Buyong Ma, Shuye Zhang","doi":"10.3390/v17010128","DOIUrl":"10.3390/v17010128","url":null,"abstract":"<p><p>This study aimed to create a new recombinant virus by modifying the EV-A71 capsid protein, serving as a useful tool and model for studying human Enteroviruses. We developed a new screening method using EV-A71 pseudovirus particles to systematically identify suitable insertion sites and tag types in the VP1 capsid protein. The pseudovirus's infectivity and replication can be assessed by measuring postinfection luciferase signals. We reported that the site after the 100th amino acid within the VP1 BC loop of EV-A71 is particularly permissive for the insertion of various tags. Notably, the introduction of S and V5 tags at this position had minimal effect on the fitness of the tagged pseudovirus. Furthermore, recombinant infectious EV-A71 strains tagged with S and V5 epitopes were successfully rescued, and the stability of these tags was verified. Computational analysis suggested that viable insertions should be compatible with capsid assembly and receptor binding, whereas non-viable insertions could potentially disrupt the capsid's binding with heparan sulfate. We expect the tagged recombinant EV-A71 to be a useful tool for studying the various stages of the enterovirus life cycle and for virus purification, immunoprecipitation, and research in immunology and vaccine development. Furthermore, this study serves as a proof of principle and may help develop similar tags in enteroviruses, for which there are fewer available tools.</p>","PeriodicalId":49328,"journal":{"name":"Viruses-Basel","volume":"17 1","pages":""},"PeriodicalIF":3.8,"publicationDate":"2025-01-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11768620/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143042918","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Optimization of Conditions for Expression of Dengue Serotype 2 EDIII Protein in <i>Escherichia coli</i> and Immune Responses of Adjuvant-Free EDIII Ferritin Nanoparticles Against Dengue Virus in BALB/c Mice.","authors":"M S B W T M Nipuna Sudaraka Tennakoon, Kyoung-Ho Lee, Hye-Mi Lee, Jae-Yeon Park, Hyun-Jin Shin","doi":"10.3390/v17010129","DOIUrl":"https://doi.org/10.3390/v17010129","url":null,"abstract":"<p><p>Self-assembling ferritin nanoparticle technology is a widely used vaccine development platform for enhancing the efficacy of subunit vaccines by displaying multiple antigens on nanocages. The dengue virus (DENV) envelope domain III (EDIII) protein, the most promising antigen for DENV, has been applied in vaccine development, and it is essential to evaluate the relative immunogenicity of the EDIII protein and EDIII-conjugated ferritin to show the efficiency of the ferritin delivery system compared with EDIII. In this study, we optimized the conditions for the expression of the EDIII protein in <i>E. coli</i>, protein purification, and refolding, and these optimization techniques were applied for the purification of EDIII ferritin nanoparticles. Thus, purified DENV2 EDIII and EDIII human ferritin heavy chain nanoparticles were immunized intramuscularly into BALB/c mice without an adjuvant, and the immunogenicity was analyzed using IgG ELISA and a serum-neutralizing assay. Purified, properly refolded, aggregate-free EDIII and EDIII ferritin proteins were obtained, and ferritin nanoparticles were identified using an electron microscope. By analyzing the immunogenicity of mouse serum, EDIII ferritin generated significantly higher IgG responses and neutralizing activity than EDIII-immunized mice. The IgG ELISA results confirmed that EDIII ferritin can induce a significantly higher IgG titer (O.D.:1.8) than EDIII (O.D.:0.05). Furthermore, EDIII ferritin produced a neutralizing titer of 1:68, whereas EDIII protein produced an average titer of 1:16, which is the serum dilution that inhibited 90% of the viruses. The longevity of the immune responses was analyzed using the serum obtained 2 months after the final immunization, and the results confirmed that EDIII ferritin induced constant immunity throughout the period.</p>","PeriodicalId":49328,"journal":{"name":"Viruses-Basel","volume":"17 1","pages":""},"PeriodicalIF":3.8,"publicationDate":"2025-01-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143042754","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Dynamic Roles of RNA and RNA Epigenetics in HTLV-1 Biology.","authors":"Emily M King, Amanda R Panfil","doi":"10.3390/v17010124","DOIUrl":"10.3390/v17010124","url":null,"abstract":"<p><p>Since the discovery of RNA in the early 1900s, scientific understanding of RNA form and function has evolved beyond protein coding. Viruses, particularly retroviruses like human T-cell leukemia virus type 1 (HTLV-1), rely heavily on RNA and RNA post-transcriptional modifications to regulate the viral lifecycle, pathogenesis, and evasion of host immune responses. With the emergence of new sequencing technologies in the last decade, our ability to dissect the intricacies of RNA has flourished. The ability to study RNA epigenetic modifications and splice variants has become more feasible with the recent development of third-generation sequencing technologies, such as Oxford nanopore sequencing. This review will highlight the dynamic roles of known RNA and post-transcriptional RNA epigenetic modifications within HTLV-1 biology, including viral <i>hbz</i>, long noncoding RNAs, microRNAs (miRNAs), transfer RNAs (tRNAs), R-loops, N6-methyladenosine (m⁶A) modifications, and RNA-based therapeutics and vaccines.</p>","PeriodicalId":49328,"journal":{"name":"Viruses-Basel","volume":"17 1","pages":""},"PeriodicalIF":3.8,"publicationDate":"2025-01-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11769288/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143042996","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"High-Throughput Oxford Nanopore Sequencing Unveils Complex Viral Population in Kansas Wheat: Implications for Sustainable Virus Management.","authors":"Nar B Ranabhat, John P Fellers, Myron A Bruce, Jessica L Shoup Rupp","doi":"10.3390/v17010126","DOIUrl":"10.3390/v17010126","url":null,"abstract":"<p><p>Wheat viruses are major yield-reducing factors, with mixed infections causing substantial economic losses. Determining field virus populations is crucial for effective management and developing virus-resistant cultivars. This study utilized the high-throughput Oxford Nanopore sequencing technique (ONT) to characterize wheat viral populations in major wheat-growing counties of Kansas from 2019 to 2021. Wheat leaves exhibiting virus-like symptoms were collected, total RNA was extracted, and cDNA libraries were prepared using a PCR-cDNA barcoding kit, then loaded onto ONT MinION flow cells. Sequencing reads aligned with cereal virus references identified eight wheat virus species. <i>Tritimovirus tritici</i> (wheat streak mosaic virus, WSMV), <i>Poacevirus tritici</i> (Triticum mosaic virus, <i>TriMV</i>), <i>Bromovirus BMV</i> (brome mosaic virus, <i>BMV</i>), as well as <i>Emaravirus tritici</i>, <i>Luteovirus pavhordei</i>, <i>L. sgvhordei</i>, <i>Bymovirus tritici</i>, and <i>Furovirus tritici.</i> Mixed infections involving two to five viruses in a single sample were common, with the most prevalent being WSMV + TriMV at 16.7% and WSMV + TriMV + BMV at 11.9%. Phylogenetic analysis revealed a wide distribution of WSMV isolates, including European and recombinant variants. A phylogenetic analysis of <i>Emaravirus tritici</i> based on RNA 3A and 3B segments and whole-genome characterization of <i>Furovirus tritici</i> were also conducted. These findings advance understanding of genetic variability, phylogenetics, and viral co-infections, supporting the development of sustainable management practices through host genetic resistance.</p>","PeriodicalId":49328,"journal":{"name":"Viruses-Basel","volume":"17 1","pages":""},"PeriodicalIF":3.8,"publicationDate":"2025-01-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11768895/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143042720","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}