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Optimizing Tongue Fluid Sampling and Testing Protocols for Enhanced PRRSV Isolation from Perinatal Swine Mortalities.
IF 3.8 3区 医学
Viruses-Basel Pub Date : 2025-01-14 DOI: 10.3390/v17010102
Onyekachukwu Henry Osemeke, Isadora Machado, Elisa De Conti, Mariah Musskopf, Mafalda Pedro Mil-Homens, Samuel Stutzman, Baoqing Guo, Thomas Petznick, Gustavo De-Sousa-E Silva, Phillip Gauger, Jianqiang Zhang, Daniel C L Linhares
{"title":"Optimizing Tongue Fluid Sampling and Testing Protocols for Enhanced PRRSV Isolation from Perinatal Swine Mortalities.","authors":"Onyekachukwu Henry Osemeke, Isadora Machado, Elisa De Conti, Mariah Musskopf, Mafalda Pedro Mil-Homens, Samuel Stutzman, Baoqing Guo, Thomas Petznick, Gustavo De-Sousa-E Silva, Phillip Gauger, Jianqiang Zhang, Daniel C L Linhares","doi":"10.3390/v17010102","DOIUrl":"10.3390/v17010102","url":null,"abstract":"<p><p>Porcine reproductive and respiratory syndrome virus (PRRSV) remains a major concern for swine health. Isolating PRRSV is essential for identifying infectious viruses and for vaccine formulation. This study evaluated the potential of using tongue fluid (TF) from perinatal piglet mortalities for PRRSV isolation. Four collection protocols were tested: extracting TF from fresh tissues using phosphate-buffered saline (PBS group), extracting TF from fresh tissues using virus transportation medium (VTM group), extracting TF from freeze-thawed tissue (freeze-thaw group), and using tissue homogenates (homogenate group). Two cell lines (ZMAC and MARC-145) and primary alveolar macrophages (PAM) were evaluated for their effect on successful PRRSV isolation. An eligible PRRSV-positive unstable breeding herd in Midwestern USA was chosen for the study. Tongues were collected in 20 batches (~30 mortalities per batch). Within each batch, each tongue tissue was cut into four quarters, with each quarter randomly assigned to one of the four collection protocols and RT-qPCR tested. Virus isolation (VI) was attempted on 10 batches. The mean RT-qPCR cycle threshold (Ct) values for the PBS, VTM, freeze-thaw, and homogenate groups were 21.9, 21.8, 22.6, and 24.8, respectively. The VI success rate was 22.6%, 12.1%, 2.8%, and 2.8% in the PBS, VTM, freeze-thaw, and homogenate groups, respectively. The probability of successful VI was 3.1% and 21.0% in the MARC-145 and ZMAC cell lines, respectively, and 4.8% in the PAM cells. TF from perinatal mortalities is an option for PRRS VI, aiding in PRRSV monitoring and control programs.</p>","PeriodicalId":49328,"journal":{"name":"Viruses-Basel","volume":"17 1","pages":""},"PeriodicalIF":3.8,"publicationDate":"2025-01-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11769101/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143042837","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}
引用次数: 0
Selected Mechanisms of Action of Bacteriophages in Bacterial Infections in Animals.
IF 3.8 3区 医学
Viruses-Basel Pub Date : 2025-01-14 DOI: 10.3390/v17010101
Renata Urban-Chmiel, Ewelina Pyzik
{"title":"Selected Mechanisms of Action of Bacteriophages in Bacterial Infections in Animals.","authors":"Renata Urban-Chmiel, Ewelina Pyzik","doi":"10.3390/v17010101","DOIUrl":"10.3390/v17010101","url":null,"abstract":"<p><p>Bacteriophages, as ubiquitous bacterial viruses in various natural ecosystems, play an important role in maintaining the homeostasis of the natural microbiota. For many years, bacteriophages were not believed to act on eukaryotic cells; however, recent studies have confirmed their ability to affect eukaryotic cells and interact with the host immune system. Due to their complex protein structure, phages can also directly or indirectly modulate immune processes, including innate immunity, by modulating phagocytosis and cytokine reactions, as well as acquired immunity, by producing antibodies and activating effector cells. They can therefore have a profound impact on the course of bacterial infections by stimulating and at the same time inhibiting the systemic pro-inflammatory response. This review article presents a characterization of the processes by which bacteriophages affect selected immune mechanisms in selected animal species. The results of our own experiments using calves are also presented as examples. The paper contains many new examples of potential uses of bacteriophages and their effects on eukaryotic cells, especially in the course of bacterial infections, which are extremely important in experimental treatments exploiting phages as alternatives to antibiotics. The positive results of the effects of bacteriophages on eukaryotic cells during infections open up promising new prospects for their use as natural tools in the treatment of bacterial, fungal, and viral diseases in animals and humans.</p>","PeriodicalId":49328,"journal":{"name":"Viruses-Basel","volume":"17 1","pages":""},"PeriodicalIF":3.8,"publicationDate":"2025-01-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11768571/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143042923","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}
引用次数: 0
Animal Models for Human-Pathogenic Coronavirus and Animal Coronavirus Research.
IF 3.8 3区 医学
Viruses-Basel Pub Date : 2025-01-14 DOI: 10.3390/v17010100
Fenglian Xiao, Jincheng Hu, Minsheng Xu, Di Wang, Xiaoyan Shen, Hua Zhang, Jie Miao, Haodong Cai, Jihui Wang, Yaqing Liu, Shan Xiao, Longchao Zhu
{"title":"Animal Models for Human-Pathogenic Coronavirus and Animal Coronavirus Research.","authors":"Fenglian Xiao, Jincheng Hu, Minsheng Xu, Di Wang, Xiaoyan Shen, Hua Zhang, Jie Miao, Haodong Cai, Jihui Wang, Yaqing Liu, Shan Xiao, Longchao Zhu","doi":"10.3390/v17010100","DOIUrl":"10.3390/v17010100","url":null,"abstract":"<p><p>Coronavirus epidemics have posed a serious threat to both human and animal health. To combat emerging infectious diseases caused by coronaviruses, various animal infection models have been developed and applied in research, including non-human primate models, ferret models, hamster models, mouse models, and others. Moreover, new approaches have been utilized to develop animal models that are more susceptible to infection. These approaches include using viral delivery methods to induce the expression of viral receptors in mouse tissues and employing gene-editing techniques to create genetically modified mice. This has led to the successful establishment of infection models for multiple coronaviruses, significantly advancing related research. In contrast, livestock and pets that can be infected by animal coronaviruses provide valuable insights when used as infection models, enabling the collection of accurate clinical data through the analysis of post-infection pathological features. However, despite the potential insights, there is a paucity of research data pertaining to these infection models. In this review, we provide a detailed overview of recent progress in the development of animal models for coronaviruses that cause diseases in both humans and animals and suggest ways in which animal models can be adapted to further enhance their value in research.</p>","PeriodicalId":49328,"journal":{"name":"Viruses-Basel","volume":"17 1","pages":""},"PeriodicalIF":3.8,"publicationDate":"2025-01-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11768759/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143042782","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}
引用次数: 0
Clinical Performance of MAGLUMI Diagnostic Tests for the Automated Detection of Dengue Virus.
IF 3.8 3区 医学
Viruses-Basel Pub Date : 2025-01-14 DOI: 10.3390/v17010106
Bo Peng, Zhonggang Fang, Cong Li, Kun Liu, Ting Wang, Ke Huang, Fan Yang, Yalan Huang, Chunli Wu, Yue Li, Dana Huang, Qian Zhang, Yijun Tang, Xiaolian Liu, Wei Rao, Xiaolu Shi
{"title":"Clinical Performance of MAGLUMI Diagnostic Tests for the Automated Detection of Dengue Virus.","authors":"Bo Peng, Zhonggang Fang, Cong Li, Kun Liu, Ting Wang, Ke Huang, Fan Yang, Yalan Huang, Chunli Wu, Yue Li, Dana Huang, Qian Zhang, Yijun Tang, Xiaolian Liu, Wei Rao, Xiaolu Shi","doi":"10.3390/v17010106","DOIUrl":"10.3390/v17010106","url":null,"abstract":"<p><strong>Aims: </strong>The screening and diagnosis of dengue virus infection play a crucial role in controlling the epidemic of dengue fever, highlighting the urgent need for a highly sensitive, simple, and rapid laboratory testing method. This study aims to assess the clinical performance of MAGLUMI Denv NS1 in detecting dengue virus NS1 antigen.</p><p><strong>Methods: </strong>A retrospective study was conducted to assess the sensitivity and specificity of MAGLUMI Denv NS1 using residual samples. Dengue-confirmed and excluded samples, validated by qPCR, were subjected to testing with MAGLUMI Denv NS1 in accordance with the manufacturer's instructions. The linear range, endogenous interference, and cross-reactivity of MAGLUMI Denv NS1 were verified, and a consistency analysis with commercial comparator products was carried out.</p><p><strong>Results: </strong>The diagnostic specificity of MAGLUMI Denv NS1 is 98.41% (62/63), and the sensitivity is 98.32% (117/119). It effectively detects various serotypes of dengue virus, with no observed endogenous interference or cross-reactivity. Additionally, the consistency of NS1, IgM, and IgG tests on the MAGLUMI platform compared to commercial comparator reagents reaches 85.71%, 99.25%, and 98.97%, respectively.</p><p><strong>Conclusions: </strong>The MAGLUMI Denv NS1 represents a highly sensitive laboratory testing method capable of enhancing the diagnostic accuracy and efficiency of dengue virus infection detection.</p>","PeriodicalId":49328,"journal":{"name":"Viruses-Basel","volume":"17 1","pages":""},"PeriodicalIF":3.8,"publicationDate":"2025-01-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11768712/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143042885","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}
引用次数: 0
Population-Level SARS-CoV-2 RT-PCR Cycle Threshold Values and Their Relationships with COVID-19 Transmission and Outcome Metrics: A Time Series Analysis Across Pandemic Years.
IF 3.8 3区 医学
Viruses-Basel Pub Date : 2025-01-14 DOI: 10.3390/v17010103
Judith Carolina De Arcos-Jiménez, Ernestina Quintero-Salgado, Pedro Martínez-Ayala, Gustavo Rosales-Chávez, Roberto Miguel Damian-Negrete, Oscar Francisco Fernández-Diaz, Mariana Del Rocio Ruiz-Briseño, Rosendo López-Romo, Patricia Noemi Vargas-Becerra, Ruth Rodríguez-Montaño, Ana María López-Yáñez, Jaime Briseno-Ramirez
{"title":"Population-Level SARS-CoV-2 RT-PCR Cycle Threshold Values and Their Relationships with COVID-19 Transmission and Outcome Metrics: A Time Series Analysis Across Pandemic Years.","authors":"Judith Carolina De Arcos-Jiménez, Ernestina Quintero-Salgado, Pedro Martínez-Ayala, Gustavo Rosales-Chávez, Roberto Miguel Damian-Negrete, Oscar Francisco Fernández-Diaz, Mariana Del Rocio Ruiz-Briseño, Rosendo López-Romo, Patricia Noemi Vargas-Becerra, Ruth Rodríguez-Montaño, Ana María López-Yáñez, Jaime Briseno-Ramirez","doi":"10.3390/v17010103","DOIUrl":"10.3390/v17010103","url":null,"abstract":"<p><p>This study investigates the relationship between SARS-CoV-2 RT-PCR cycle threshold (Ct) values and key COVID-19 transmission and outcome metrics across five years of the pandemic in Jalisco, Mexico. Utilizing a comprehensive time-series analysis, we evaluated weekly median Ct values as proxies for viral load and their temporal associations with positivity rates, reproduction numbers (Rt), hospitalizations, and mortality. Cross-correlation and lagged regression analyses revealed significant lead-lag relationships, with declining Ct values consistently preceding surges in positivity rates and hospitalizations, particularly during the early phases of the pandemic. Granger causality tests and vector autoregressive modeling confirmed the predictive utility of Ct values, highlighting their potential as early warning indicators. The study further observed a weakening association in later pandemic stages, likely influenced by the emergence of new variants, hybrid immunity, changes in human behavior, and diagnostic shifts. These findings underscore the value of Ct values as scalable tools for public health surveillance and highlight the importance of contextualizing their analysis within specific epidemiological and temporal frameworks. Integrating Ct monitoring into surveillance systems could enhance pandemic preparedness, improve outbreak forecasting, and strengthen epidemiological modeling.</p>","PeriodicalId":49328,"journal":{"name":"Viruses-Basel","volume":"17 1","pages":""},"PeriodicalIF":3.8,"publicationDate":"2025-01-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11768943/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143042759","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}
引用次数: 0
Animal Models of Non-Respiratory, Post-Acute Sequelae of COVID-19.
IF 3.8 3区 医学
Viruses-Basel Pub Date : 2025-01-14 DOI: 10.3390/v17010098
Abigail Vanderheiden, Michael S Diamond
{"title":"Animal Models of Non-Respiratory, Post-Acute Sequelae of COVID-19.","authors":"Abigail Vanderheiden, Michael S Diamond","doi":"10.3390/v17010098","DOIUrl":"10.3390/v17010098","url":null,"abstract":"<p><p>Post-acute sequelae of COVID-19 (PASC) are a diverse set of symptoms and syndromes driven by dysfunction of multiple organ systems that can persist for years and negatively impact the quality of life for millions of individuals. We currently lack specific therapeutics for patients with PASC, due in part to an incomplete understanding of its pathogenesis, especially for non-pulmonary sequelae. Here, we discuss three animal models that have been utilized to investigate PASC: non-human primates (NHPs), hamsters, and mice. We focus on neurological, gastrointestinal, and cardiovascular PASC and highlight advances in mechanistic insight that have been made using these animal models, as well as discussing the sequelae that warrant continued and intensive research.</p>","PeriodicalId":49328,"journal":{"name":"Viruses-Basel","volume":"17 1","pages":""},"PeriodicalIF":3.8,"publicationDate":"2025-01-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11768974/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143042785","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}
引用次数: 0
Comparative Analysis of Hemagglutination Inhibition and Plaque Reduction Neutralization Tests for Japanese Encephalitis Virus Antibody Detection.
IF 3.8 3区 医学
Viruses-Basel Pub Date : 2025-01-14 DOI: 10.3390/v17010104
Cui Li, Jianqing Wan, Deli Wang, Lu Xiao, Xuni Li, Cunshuai Zhang, Zhao Wang
{"title":"Comparative Analysis of Hemagglutination Inhibition and Plaque Reduction Neutralization Tests for Japanese Encephalitis Virus Antibody Detection.","authors":"Cui Li, Jianqing Wan, Deli Wang, Lu Xiao, Xuni Li, Cunshuai Zhang, Zhao Wang","doi":"10.3390/v17010104","DOIUrl":"10.3390/v17010104","url":null,"abstract":"<p><p>Japanese encephalitis (JE) is a zoonotic disease caused by the Japanese encephalitis virus (JEV), belonging to the <i>Flaviviridae</i> family. Diagnosis of Japanese encephalitis (JE) based on clinical signs alone is challenging due to the high proportion of subclinical cases. The Plaque Reduction Neutralization Test (PRNT) is considered the gold standard for detecting JE-specific antibodies because of its high specificity. However, PRNT is complex, time-consuming, and requires live viruses, limiting its applicability in routine diagnostics. In this study, we compared the sensitivity and correlation of the Hemagglutination Inhibition (HI) assay and PRNT for detecting JE antibodies in avian serum samples. We conducted a comparative analysis of the outcomes obtained from the PRNT and HI using 240 serum samples collected from 30 JEV-immunized avian subjects at various time points. Comparative analysis revealed a significant correlation between the HI and PRNT (R<sup>2</sup> = 0.9321, <i>p</i> ≤ 0.0001). The Bland-Altman analysis also exhibited favorable concordance between the two assays. Consequently, HI may function as a viable substitute for PRNT in the screening of a substantial number of serum samples.</p>","PeriodicalId":49328,"journal":{"name":"Viruses-Basel","volume":"17 1","pages":""},"PeriodicalIF":3.8,"publicationDate":"2025-01-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11768560/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143042904","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}
引用次数: 0
Recent Advances in Our Understanding of Human Inflammatory Dendritic Cells in Human Immunodeficiency Virus Infection.
IF 3.8 3区 医学
Viruses-Basel Pub Date : 2025-01-14 DOI: 10.3390/v17010105
Freja A Warner van Dijk, Kirstie M Bertram, Thomas R O'Neil, Yuchen Li, Daniel J Buffa, Andrew N Harman, Anthony L Cunningham, Najla Nasr
{"title":"Recent Advances in Our Understanding of Human Inflammatory Dendritic Cells in Human Immunodeficiency Virus Infection.","authors":"Freja A Warner van Dijk, Kirstie M Bertram, Thomas R O'Neil, Yuchen Li, Daniel J Buffa, Andrew N Harman, Anthony L Cunningham, Najla Nasr","doi":"10.3390/v17010105","DOIUrl":"10.3390/v17010105","url":null,"abstract":"<p><p>Anogenital inflammation is a critical risk factor for HIV acquisition. The primary preventative HIV intervention, pre-exposure prophylaxis (PrEP), is ineffective in blocking transmission in anogenital inflammation. Pre-existing sexually transmitted diseases (STIs) and anogenital microbiota dysbiosis are the leading causes of inflammation, where inflammation is extensive and often asymptomatic and undiagnosed. Dendritic cells (DCs), as potent antigen-presenting cells, are among the first to capture HIV upon its entry into the mucosa, and they subsequently transport the virus to CD4 T cells, the primary HIV target cells. This increased HIV susceptibility in inflamed tissue likely stems from a disrupted epithelial barrier integrity, phenotypic changes in resident DCs and an influx of inflammatory HIV target cells, including DCs and CD4 T cells. Gaining insight into how HIV interacts with specific inflammatory DC subsets could inform the development of new therapeutic strategies to block HIV transmission. However, little is known about the early stages of HIV capture and transmission in inflammatory environments. Here, we review the currently characterised inflammatory-tissue DCs and their interactions with HIV.</p>","PeriodicalId":49328,"journal":{"name":"Viruses-Basel","volume":"17 1","pages":""},"PeriodicalIF":3.8,"publicationDate":"2025-01-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11768623/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143042887","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}
引用次数: 0
Egyptian Novel Goose Parvovirus in Immune Organs of Naturally Infected Ducks: Next-Generation Sequencing, Immunohistochemical Signals, and Comparative Analysis of Pathological Changes Using Multiple Correspondence and Hierarchical Clustering Approach.
IF 3.8 3区 医学
Viruses-Basel Pub Date : 2025-01-13 DOI: 10.3390/v17010096
Mohamed A Lebdah, Amal A M Eid, Reham M ElBakrey, Abd Elgalil El-Gohary, Mohamed G Seadawy, Mohamed R Mousa, Hagar F Gouda, Nehal I A Goda, Mostafa F El-Hosseny, Ahmed S El-Tahlawy, Rokayya Sami, Rasha A Al-Eisa, Sarah S Helal
{"title":"Egyptian Novel Goose Parvovirus in Immune Organs of Naturally Infected Ducks: Next-Generation Sequencing, Immunohistochemical Signals, and Comparative Analysis of Pathological Changes Using Multiple Correspondence and Hierarchical Clustering Approach.","authors":"Mohamed A Lebdah, Amal A M Eid, Reham M ElBakrey, Abd Elgalil El-Gohary, Mohamed G Seadawy, Mohamed R Mousa, Hagar F Gouda, Nehal I A Goda, Mostafa F El-Hosseny, Ahmed S El-Tahlawy, Rokayya Sami, Rasha A Al-Eisa, Sarah S Helal","doi":"10.3390/v17010096","DOIUrl":"10.3390/v17010096","url":null,"abstract":"<p><p>The present study aims to better understand the nature of currently circulating GPV strains and their pathological impact on the immune system during natural outbreaks among different duck breeds in Egypt. For this purpose, 99 ducks (25 flocks) of different breeds, aged 14-75 days, were clinically examined, and 75 tissue pools from the thymus, bursa of Fabricius, and spleen were submitted for virus detection and identification. Clinical and postmortem findings were suggestive of GPV infection. Concerning the immune system organs, atrophy in the thymus (60.6%), bursa (45.5%), and spleen (38.3%) was the most common gross lesion. Microscopically, the pathological impact of the virus was exhibited by a necrotic thymic cortex with Hassall's corpuscle disintegration, the disappearance of normal bursal histological morphology accompanied by atrophied follicles and lymphocytic depletion, and apoptosis of B-lymphocytes in lymphoid follicles of the spleen. Furthermore, immunohistochemical examination revealed positive signals of the parvovirus detected in thymic lymphocytes in the cortex, bursa-dependent lymphoid follicle of the medulla, and diffuse positive expression of viral antigens in the spleen. GPV was detected in ducks using polymerase chain reaction, with the highest percentage of positive detection in the bursa of Fabricius (76%). Next-generation sequencing and phylogenetic analysis revealed that the detected virus was a variant of GPV, globally named novel GPV (NGPV), and closely related to Chinese NGPV isolates. To our knowledge, the current study is pioneering to address the immunopathological impact of NGPV among naturally infected ducks confirmed with full genome sequencing and immunohistochemical identification worldwide.</p>","PeriodicalId":49328,"journal":{"name":"Viruses-Basel","volume":"17 1","pages":""},"PeriodicalIF":3.8,"publicationDate":"2025-01-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11769075/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143042947","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}
引用次数: 0
COVID-19 and HIV: Clinical Outcomes and Inflammatory Markers in a Cohort from a Reference Hospital in Rio de Janeiro, Brazil.
IF 3.8 3区 医学
Viruses-Basel Pub Date : 2025-01-13 DOI: 10.3390/v17010091
Nathalia Beatriz Ramos de Sá, Karine Venegas Macieira, Mariana Rosa Inacio Coelho, Milena Neira Goulart, Marcelo Ribeiro-Alves, Leonardo Azevedo da Silva Rosadas, Kim Mattos Geraldo, Maria Pia Diniz Ribeiro, Sandra Wagner Cardoso, Beatriz Grinsztejn, Valdiléa G Veloso, Andressa da Silva Cazote, Dalziza Victalina de Almeida, Carmem Beatriz Wagner Giacoia-Gripp, Fernanda Heloise Côrtes, Mariza Gonçalves Morgado
{"title":"COVID-19 and HIV: Clinical Outcomes and Inflammatory Markers in a Cohort from a Reference Hospital in Rio de Janeiro, Brazil.","authors":"Nathalia Beatriz Ramos de Sá, Karine Venegas Macieira, Mariana Rosa Inacio Coelho, Milena Neira Goulart, Marcelo Ribeiro-Alves, Leonardo Azevedo da Silva Rosadas, Kim Mattos Geraldo, Maria Pia Diniz Ribeiro, Sandra Wagner Cardoso, Beatriz Grinsztejn, Valdiléa G Veloso, Andressa da Silva Cazote, Dalziza Victalina de Almeida, Carmem Beatriz Wagner Giacoia-Gripp, Fernanda Heloise Côrtes, Mariza Gonçalves Morgado","doi":"10.3390/v17010091","DOIUrl":"10.3390/v17010091","url":null,"abstract":"<p><strong>Background: </strong>Severe COVID-19 presents a variety of clinical manifestations associated with inflammatory profiles. People living with HIV (PLWH) could face a higher risk of hospitalization and mortality from COVID-19, depending on their immunosuppression levels. This study describes inflammatory markers in COVID-19 clinical outcomes with and without HIV infection.</p><p><strong>Methods: </strong>We analyzed 112 inpatients of the Hospital Center for COVID-19 (INI/FIOCRUZ), including 22 cases of COVID-19 in PLWH (COVID/PLWH group). Plasma samples were tested for a panel of 15 cytokines by Luminex. Sociodemographic, clinical, and laboratory data were collected from patients' clinical records.</p><p><strong>Results: </strong>COVID-19 individuals were stratified according to the WHO clinical severity profiles at hospitalization. Significant differences in clinical scores, symptoms (coughs), and the occurrence of HIV infection were found among the groups. Clinical blood parameters and plasma cytokines were analyzed among COVID-19 groups with distinct severity profiles. Critical COVID-19 cases showed higher levels of inflammatory markers (Bilirubin, D-dimer, PCR, and urea, as well as IL-8, IL-10, TNF-α, INF-α, IL-1β, IL-17A, IL-23, IL-6) than moderate and severe groups. The COVID/PLWH group had lower CD4 counts (64 cells/mm<sup>3</sup>) and cytokine levels than other COVID-19 patients.</p><p><strong>Conclusions: </strong>Overall, critically ill COVID-19 patients exhibited heightened inflammatory responses, while COVID/PLWH demonstrated unique immunological characteristics without increased mortality risk.</p>","PeriodicalId":49328,"journal":{"name":"Viruses-Basel","volume":"17 1","pages":""},"PeriodicalIF":3.8,"publicationDate":"2025-01-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11769093/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143042921","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}
引用次数: 0
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