Viruses最新文献 - Book学术

Sputnik V-Induced Antibodies against SARS-CoV-2 Variants during the Dissemination of the Gamma Variant in Venezuela Sputnik V 在委内瑞拉传播伽马变异体期间诱发的针对 SARS-CoV-2 变异体的抗体

Viruses Pub Date : 2024-09-18 DOI: 10.3390/v16091480

Christopher Franco, Alejandro Cornejo, Mariajosé Rodríguez, Alexis García, Inirida Belisario, Soriuska Mayora, Domingo José Garzaro, Rossana Celeste Jaspe, Mariana Hidalgo, Nereida Parra, Ferdinando Liprandi, José Luis Zambrano, Héctor Rafael Rangel, Flor Helene Pujol

{"title":"Sputnik V-Induced Antibodies against SARS-CoV-2 Variants during the Dissemination of the Gamma Variant in Venezuela","authors":"Christopher Franco, Alejandro Cornejo, Mariajosé Rodríguez, Alexis García, Inirida Belisario, Soriuska Mayora, Domingo José Garzaro, Rossana Celeste Jaspe, Mariana Hidalgo, Nereida Parra, Ferdinando Liprandi, José Luis Zambrano, Héctor Rafael Rangel, Flor Helene Pujol","doi":"10.3390/v16091480","DOIUrl":"https://doi.org/10.3390/v16091480","url":null,"abstract":"The COVID-19 pandemic was characterized by the emergence and succession of SARS-CoV-2 variants able to evade the antibody response induced by natural infection and vaccination. To evaluate the IgG reactivity and neutralizing capacity of the serum of individuals vaccinated with Sputnik V (105 volunteers vaccinated) against different viral variants. IgG reactivity to the Spike protein (S) was evaluated by ELISA. A plaque reduction neutralization test was performed using different viral variant isolates. At 42 days post-vaccination, the frequency of recognition and reactivity to the S protein of the Omicron variant was lower compared to that of the other variants. In general, a higher average neutralization titer was seen against the ancestral variant compared to the variants, especially Omicron. However, some sera exhibited a higher neutralization titer to the Gamma variant compared to the ancestral variant, suggesting unapparent exposure during the clinical trial. Antibodies induced by Sputnik V can recognize, persist, and neutralize SARS-CoV-2 variants, with Omicron being the one that best evades this response. These results represent a unique report on the humoral response induced by a globally lesser-studied vaccine in terms of efficacy and immune escape, offering insights into developing vaccines targeting unknown coronaviruses.","PeriodicalId":501326,"journal":{"name":"Viruses","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142255768","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

New Therapies and Strategies to Curb HIV Infections with a Focus on Macrophages and Reservoirs 以巨噬细胞和贮存库为重点遏制艾滋病毒感染的新疗法和新策略

Viruses Pub Date : 2024-09-18 DOI: 10.3390/v16091484

Maria Marra, Alessia Catalano, Maria Stefania Sinicropi, Jessica Ceramella, Domenico Iacopetta, Romina Salpini, Valentina Svicher, Stefania Marsico, Stefano Aquaro, Michele Pellegrino

{"title":"New Therapies and Strategies to Curb HIV Infections with a Focus on Macrophages and Reservoirs","authors":"Maria Marra, Alessia Catalano, Maria Stefania Sinicropi, Jessica Ceramella, Domenico Iacopetta, Romina Salpini, Valentina Svicher, Stefania Marsico, Stefano Aquaro, Michele Pellegrino","doi":"10.3390/v16091484","DOIUrl":"https://doi.org/10.3390/v16091484","url":null,"abstract":"More than 80 million people worldwide have been infected with the human immunodeficiency virus (HIV). There are now approximately 39 million individuals living with HIV/acquired immunodeficiency syndrome (AIDS). Although treatments against HIV infection are available, AIDS remains a serious disease. Combination antiretroviral therapy (cART), also known as highly active antiretroviral therapy (HAART), consists of treatment with a combination of several antiretroviral drugs that block multiple stages in the virus replication cycle. However, the increasing usage of cART is inevitably associated with the emergence of HIV drug resistance. In addition, the development of persistent cellular reservoirs of latent HIV is a critical obstacle to viral eradication since viral rebound takes place once anti-retroviral therapy (ART) is interrupted. Thus, several efforts are being applied to new generations of drugs, vaccines and new types of cART. In this review, we summarize the antiviral therapies used for the treatment of HIV/AIDS, both as individual agents and as combination therapies, and highlight the role of both macrophages and HIV cellular reservoirs and the most recent clinical studies related to this disease.","PeriodicalId":501326,"journal":{"name":"Viruses","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142255773","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Hepatocellular Carcinoma Incidences and Risk Factors in Hepatitis C Patients: Interferon Versus Direct-Acting Agents 丙型肝炎患者肝细胞癌的发病率和风险因素：干扰素与直接作用药物

Viruses Pub Date : 2024-09-18 DOI: 10.3390/v16091485

Yu-Ting Kao, Yen-Chun Liu, Ya-Ting Cheng, Yu-Wen Wen, Yi-Chung Hsieh, Cheng-Er Hsu, Chung-Wei Su, Jennifer Chia-Hung Tai, Yi-Cheng Chen, Wen-Juei Jeng, Chun-Yen Lin, Rong-Nan Chien, Dar-In Tai, I-Shyan Sheen

{"title":"Hepatocellular Carcinoma Incidences and Risk Factors in Hepatitis C Patients: Interferon Versus Direct-Acting Agents","authors":"Yu-Ting Kao, Yen-Chun Liu, Ya-Ting Cheng, Yu-Wen Wen, Yi-Chung Hsieh, Cheng-Er Hsu, Chung-Wei Su, Jennifer Chia-Hung Tai, Yi-Cheng Chen, Wen-Juei Jeng, Chun-Yen Lin, Rong-Nan Chien, Dar-In Tai, I-Shyan Sheen","doi":"10.3390/v16091485","DOIUrl":"https://doi.org/10.3390/v16091485","url":null,"abstract":"Background: Hepatocellular carcinoma (HCC) remains a significant concern for patients with chronic hepatitis C (HCV), even after achieving a sustained virological response (SVR) with direct-acting antivirals (DAAs) or interferon (IFN)-based therapies. This study compared the risk of HCC in patients with HCV who achieved SVR through the DAA versus IFN regimens. Methods: A retrospective analysis was conducted on 4806 HCV patients, without coinfection nor prior HCC history, treated at the Chang Gung Memorial Hospital, Taiwan (DAA: 2825, IFN: 1981). Kaplan–Meier and Cox regression analyses with propensity score matching (PSM) were used to adjust for baseline differences. Results: DAA-treated patients exhibited a higher incidence of HCC than IFN-treated patients before and after PSM (after PSM: annual: 1% vs. 0.5%; 6-year: 6% vs. 3%, p = 0.01). Both DAA and IFN patients had a decreased HCC incidence during follow-up (>3 vs. <3 years from the end of treatment: DAA: 1.43% vs. 1.00% per year; IFN: 0.47% vs. 0.36% per year, both p < 0.05). HCC incidence was higher in the first three years post-SVR in DAA-treated ACLD patients and then decreased (3.26% vs. 1.39% per year, p < 0.01). In contrast, HCC incidence remained constant in the non-ACLD and IFN-treated groups. Multivariate Cox regression identified age ≥ 60, male sex, BMI, AFP ≥ 6 ng/mL, FIB-4, and ACLD status as independent risk factors for HCC, but antiviral regimens were not an independent factor for HCC. Conclusion: DAA treatment significantly affects HCC risk primarily within three years post-treatment, especially in younger HCV patients with ACLD. HCC incidence was reduced after three years in ACLD patients treated by DAA, but continued surveillance was still necessary. However, patients under 60 without advanced liver disease may require less intensive follow-up.","PeriodicalId":501326,"journal":{"name":"Viruses","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142255775","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Mycologists and Virologists Align: Proposing Botrytis cinerea for Global Mycovirus Studies 真菌学家和病毒学家一致：建议将黑穗病菌用于全球霉菌病毒研究

Viruses Pub Date : 2024-09-18 DOI: 10.3390/v16091483

Mahmoud E. Khalifa, María A. Ayllón, Lorena Rodriguez Coy, Kim M. Plummer, Anthony R. Gendall, Kar Mun Chooi, Jan A.L. van Kan, Robin M. MacDiarmid

{"title":"Mycologists and Virologists Align: Proposing Botrytis cinerea for Global Mycovirus Studies","authors":"Mahmoud E. Khalifa, María A. Ayllón, Lorena Rodriguez Coy, Kim M. Plummer, Anthony R. Gendall, Kar Mun Chooi, Jan A.L. van Kan, Robin M. MacDiarmid","doi":"10.3390/v16091483","DOIUrl":"https://doi.org/10.3390/v16091483","url":null,"abstract":"Mycoviruses are highly genetically diverse and can significantly change their fungal host’s phenotype, yet they are generally under-described in genotypic and biological studies. We propose Botrytis cinerea as a model mycovirus system in which to develop a deeper understanding of mycovirus epidemiology including diversity, impact, and the associated cellular biology of the host and virus interaction. Over 100 mycoviruses have been described in this fungal host. B. cinerea is an ideal model fungus for mycovirology as it has highly tractable characteristics—it is easy to culture, has a worldwide distribution, infects a wide range of host plants, can be transformed and gene-edited, and has an existing depth of biological resources including annotated genomes, transcriptomes, and isolates with gene knockouts. Focusing on a model system for mycoviruses will enable the research community to address deep research questions that cannot be answered in a non-systematic manner. Since B. cinerea is a major plant pathogen, new insights may have immediate utility as well as creating new knowledge that complements and extends the knowledge of mycovirus interactions in other fungi, alone or with their respective plant hosts. In this review, we set out some of the critical steps required to develop B. cinerea as a model mycovirus system and how this may be used in the future.","PeriodicalId":501326,"journal":{"name":"Viruses","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142255772","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The Discovery of a Citrus Yellow Vein Clearing Virus Hacienda Heights Isolate Diversifies the Geological Origins of the Virus in California, United States 发现柑橘黄脉病病毒哈仙达岗分离株，使该病毒在美国加利福尼亚州的地质起源多样化

Viruses Pub Date : 2024-09-18 DOI: 10.3390/v16091479

Yong-Duo Sun, Raymond Yokomi

{"title":"The Discovery of a Citrus Yellow Vein Clearing Virus Hacienda Heights Isolate Diversifies the Geological Origins of the Virus in California, United States","authors":"Yong-Duo Sun, Raymond Yokomi","doi":"10.3390/v16091479","DOIUrl":"https://doi.org/10.3390/v16091479","url":null,"abstract":"The citrus yellow vein clearing virus (CYVCV) is an emerging threat to the U.S. citrus industry. Reports from China shows it cause significant reductions in fruit yield and growth, particularly in lemon trees. In 2022, CYVCV was detected in a wide range of citrus cultivars in localized urban properties in Tulare, California. In 2024, a CYVCV-infected lemon tree was detected in Hacienda Heights in Los Angeles County, California, geographically separated from the Tulare foci. Through long-read sequencing technology, the whole-genome sequence of a CYVCV isolate from Hacienda Heights (designated as CYVCV-CA-HH1, Accession number PP840891.1) was obtained. Sequence alignments and neighbornet analysis strongly suggested that the CYVCV-CA-HH1 isolate has a different origin than the Tulare CYVCV (CYVCV CA-TL) isolates. The CYVCV CA-TL isolates were grouped with those from South Asia (India and Pakistan) and the Middle East (Türkiye), while the CYVCV-CA-HH1 isolate was grouped with isolates from East Asia (China and South Korea). Maximum likelihood phylogenetic analysis further supports this finding, showing that the CYVCV-CA-HH1 isolate shares the most recent common ancestor with a South Korean lineage, which derives from Chinese isolates. Together, our data suggest a diverse geological origin of CYVCV isolates in California.","PeriodicalId":501326,"journal":{"name":"Viruses","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142269011","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Immunogenicity of an Inactivated COVID-19 Vaccine in People Living with HIV in Guangxi, China: A Prospective Cohort Study 中国广西 HIV 感染者接种 COVID-19 灭活疫苗的免疫原性：前瞻性队列研究

Viruses Pub Date : 2024-09-18 DOI: 10.3390/v16091481

Yuting Wu, Xinwei Wang, Yunxuan Huang, Rongfeng Chen, Yuexiang Xu, Wudi Wei, Fengxiang Qin, Zongxiang Yuan, Jinming Su, Xiu Chen, Jie Liu, Liufang Wen, Minjuan Shi, Tongxue Qin, Yinlu Liao, Beibei Lu, Xing Tao, Cuixiao Wang, Shanshan Chen, Jinmiao Li, William J. Liu, Li Ye, Hao Liang, Junjun Jiang

{"title":"Immunogenicity of an Inactivated COVID-19 Vaccine in People Living with HIV in Guangxi, China: A Prospective Cohort Study","authors":"Yuting Wu, Xinwei Wang, Yunxuan Huang, Rongfeng Chen, Yuexiang Xu, Wudi Wei, Fengxiang Qin, Zongxiang Yuan, Jinming Su, Xiu Chen, Jie Liu, Liufang Wen, Minjuan Shi, Tongxue Qin, Yinlu Liao, Beibei Lu, Xing Tao, Cuixiao Wang, Shanshan Chen, Jinmiao Li, William J. Liu, Li Ye, Hao Liang, Junjun Jiang","doi":"10.3390/v16091481","DOIUrl":"https://doi.org/10.3390/v16091481","url":null,"abstract":"The inactivated COVID-19 vaccine has demonstrated high efficacy in the general population through extensive clinical and real-world studies. However, its effectiveness in immunocompromised individuals, particularly those living with HIV (PLWH), remains limited. In this study, 20 PLWH and 15 HIV-seronegative individuals were recruited to evaluate the immunogenicity of an inactivated COVID-19 vaccine in PLWH through a prospective cohort study. The median age of the 20 PLWH and 15 HIV-seronegative individuals was 42 years and 31 years, respectively. Of the PLWH, nine had been on ART for over five years. The median anti-SARS-CoV-2 S-RBD IgG antibody level on d224 was higher than that on d42 (8188.7 ng/mL vs. 3200.9 ng/mL, P < 0.05). Following COVID-19 infection, the antibody level increased to 29,872.5 ng/mL on dre+90, 12.19 times higher than that on d300. Compared with HIV-seronegative individuals, the antibody level in PLWH was lower on d210 (183.3 ng/mL vs. 509.3 ng/mL, P < 0.01), while there was no difference after d224. The symptoms of COVID-19 infection in PLWH were comparable to those in HIV-seronegative individuals. In this study, the inactivated COVID-19 vaccine demonstrated good immunogenicity in PLWH. The protective benefit of booster vaccinations for PLWH cannot be ignored. Implementing a booster vaccination policy for PLWH is an effective approach to providing better protection against the COVID-19 pandemic.","PeriodicalId":501326,"journal":{"name":"Viruses","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142255770","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The Autonomous Fusion Activity of Human Cytomegalovirus Glycoprotein B Is Regulated by Its Carboxy-Terminal Domain 人类巨细胞病毒糖蛋白 B 的自主融合活性受其羧基末端结构域调控

Viruses Pub Date : 2024-09-18 DOI: 10.3390/v16091482

Nina Reuter, Barbara Kropff, Xiaohan Chen, William J. Britt, Heinrich Sticht, Michael Mach, Marco Thomas

{"title":"The Autonomous Fusion Activity of Human Cytomegalovirus Glycoprotein B Is Regulated by Its Carboxy-Terminal Domain","authors":"Nina Reuter, Barbara Kropff, Xiaohan Chen, William J. Britt, Heinrich Sticht, Michael Mach, Marco Thomas","doi":"10.3390/v16091482","DOIUrl":"https://doi.org/10.3390/v16091482","url":null,"abstract":"The human cytomegalovirus (HCMV) glycoprotein B (gB) is the viral fusogen required for entry into cells and for direct cell-to-cell spread of the virus. We have previously demonstrated that the exchange of the carboxy-terminal domain (CTD) of gB for the CTD of the structurally related fusion protein G of the vesicular stomatitis virus (VSV-G) resulted in an intrinsically fusion-active gB variant (gB/VSV-G). In this present study, we employed a dual split protein (DSP)-based cell fusion assay to further characterize the determinants of fusion activity in the CTD of gB. We generated a comprehensive library of gB CTD truncation mutants and identified two mutants, gB-787 and gB-807, which were fusion-competent and induced the formation of multinucleated cell syncytia in the absence of other HCMV proteins. Structural modeling coupled with site-directed mutagenesis revealed that gB fusion activity is primarily mediated by the CTD helix 2, and secondarily by the recruitment of cellular SH2/WW-domain-containing proteins. The fusion activity of gB-807 was inhibited by gB-specific monoclonal antibodies (MAbs) targeting the antigenic domains AD-1 to AD-5 within the ectodomain and not restricted to MAbs directed against AD-4 and AD-5 as observed for gB/VSV-G. This finding suggested a differential regulation of the fusion-active conformational state of both gB variants. Collectively, our findings underscore a pivotal role of the CTD in regulating the fusogenicity of HCMV gB, with important implications for understanding the conformations of gB that facilitate membrane fusion, including antigenic structures that could be targeted by antibodies to block this essential step in HCMV infection.","PeriodicalId":501326,"journal":{"name":"Viruses","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142255771","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Toward the Eradication of Herpes Simplex Virus: Vaccination and Beyond 消灭单纯疱疹病毒：疫苗接种及其他

Viruses Pub Date : 2024-09-17 DOI: 10.3390/v16091476

Jane Y. Chang, Curt Balch, Hyung Suk Oh

{"title":"Toward the Eradication of Herpes Simplex Virus: Vaccination and Beyond","authors":"Jane Y. Chang, Curt Balch, Hyung Suk Oh","doi":"10.3390/v16091476","DOIUrl":"https://doi.org/10.3390/v16091476","url":null,"abstract":"Herpes simplex virus (HSV) has coevolved with Homo sapiens for over 100,000 years, maintaining a tenacious presence by establishing lifelong, incurable infections in over half the human population. As of 2024, an effective prophylactic or therapeutic vaccine for HSV remains elusive. In this review, we independently screened PubMed, EMBASE, Medline, and Google Scholar for clinically relevant articles on HSV vaccines. We identified 12 vaccines from our literature review and found promising candidates across various classes, including subunit vaccines, live vaccines, DNA vaccines, and mRNA vaccines. Notably, several vaccines—SL-V20, HF10, VC2, and mRNA-1608—have shown promising preclinical results, suggesting that an effective HSV vaccine may be within reach. Additionally, several other vaccines such as GEN-003 (a subunit vaccine from Genocea), HerpV (a subunit vaccine from Agenus), 0ΔNLS/RVx201 (a live-attenuated replication-competent vaccine from Rational Vaccines), HSV 529 (a replication-defective vaccine from Sanofi Pasteur), and COR-1 (a DNA-based vaccine from Anteris Technologies) have demonstrated potential in clinical trials. However, GEN-003 and HerpV have not advanced further despite promising results. Continued progress with these candidates brings us closer to a significant breakthrough in preventing and treating HSV infections.","PeriodicalId":501326,"journal":{"name":"Viruses","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142255465","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Increased Virulence of Culicoides Midge Cell-Derived Bluetongue Virus in IFNAR Mice Culicoides Midge 细胞衍生的蓝舌病病毒对 IFNAR 小鼠的毒力增强

Viruses Pub Date : 2024-09-17 DOI: 10.3390/v16091474

Barbara S. Drolet, Lindsey Reister-Hendricks, Christie Mayo, Case Rodgers, David C. Molik, David Scott McVey

{"title":"Increased Virulence of Culicoides Midge Cell-Derived Bluetongue Virus in IFNAR Mice","authors":"Barbara S. Drolet, Lindsey Reister-Hendricks, Christie Mayo, Case Rodgers, David C. Molik, David Scott McVey","doi":"10.3390/v16091474","DOIUrl":"https://doi.org/10.3390/v16091474","url":null,"abstract":"Bluetongue (BT) is a Culicoides midge-borne hemorrhagic disease affecting cervids and ruminant livestock species, resulting in significant economic losses from animal production and trade restrictions. Experimental animal infections using the α/β interferon receptor knockout IFNAR mouse model and susceptible target species are critical for understanding viral pathogenesis, virulence, and evaluating vaccines. However, conducting experimental vector-borne transmission studies with the vector itself are logistically difficult and experimentally problematic. Therefore, experimental infections are induced by hypodermic injection with virus typically derived from baby hamster kidney (BHK) cells. Unfortunately, for many U.S. BTV serotypes, it is difficult to replicate the severity of the disease seen in natural, midge-transmitted infections by injecting BHK-derived virus into target host animals. Using the IFNAR BTV murine model, we compared the virulence of traditional BHK cell-derived BTV-17 with C. sonorensis midge (W8) cell-derived BTV-17 to determine whether using cells of the transmission vector would provide an in vitro virulence aspect of vector-transmitted virus. At both low and high doses, mice inoculated with W8-BTV-17 had an earlier onset of viremia, earlier onset and peak of clinical signs, and significantly higher mortality compared to mice inoculated with BHK-BTV-17. Our results suggest using a Culicoides W8 cell-derived inoculum may provide an in vitro vector-enhanced infection to more closely represent disease levels seen in natural midge-transmitted infections while avoiding the logistical and experimental complexity of working with live midges.","PeriodicalId":501326,"journal":{"name":"Viruses","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142255774","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Identification and Characterization of Novel Serpentoviruses in Viperid and Elapid Snakes 蝰蛇和游蛇中新型蛇形病毒的鉴定和特征描述

Viruses Pub Date : 2024-09-17 DOI: 10.3390/v16091477

Steven B. Tillis, Sarah B. Chaney, Esther E. V. Crouch, Donal Boyer, Kevin Torregrosa, Avishai D. Shuter, Anibal Armendaris, April L. Childress, Denise McAloose, Jean A. Paré, Robert J. Ossiboff, Kenneth J. Conley

{"title":"Identification and Characterization of Novel Serpentoviruses in Viperid and Elapid Snakes","authors":"Steven B. Tillis, Sarah B. Chaney, Esther E. V. Crouch, Donal Boyer, Kevin Torregrosa, Avishai D. Shuter, Anibal Armendaris, April L. Childress, Denise McAloose, Jean A. Paré, Robert J. Ossiboff, Kenneth J. Conley","doi":"10.3390/v16091477","DOIUrl":"https://doi.org/10.3390/v16091477","url":null,"abstract":"Viruses in the subfamily Serpentovirinae (order Nidovirales, family Tobaniviridae) can cause significant morbidity and mortality in captive snakes, but documented infections have been limited to snakes of the Boidae, Colubridae, Homalopsidae, and Pythonidae families. Infections can either be subclinical or associated with oral and/or respiratory disease. Beginning in June 2019, a population of over 150 confiscated snakes was screened for serpentovirus as part of a quarantine disease investigation. Antemortem oropharyngeal swabs or lung tissue collected postmortem were screened for serpentovirus by PCR, and 92/165 (56.0%) of snakes tested were positive for serpentovirus. Serpentoviruses were detected in fourteen species of Viperidae native to Asia, Africa, and South America and a single species of Elapidae native to Australia. When present, clinical signs included thin body condition, abnormal behavior or breathing, stomatitis, and/or mortality. Postmortem findings included variably severe inflammation, necrosis, and/or epithelial proliferation throughout the respiratory and upper gastrointestinal tracts. Genetic characterization of the detected serpentoviruses identified four unique viral clades phylogenetically distinct from recognized serpentovirus genera. Pairwise uncorrected distance analysis supported the phylogenetic analysis and indicated that the viper serpentoviruses likely represent the first members of a novel genus in the subfamily Serpentovirinae. The reported findings represent the first documentation of serpentoviruses in venomous snakes (Viperidae and Elapidae), greatly expanding the susceptible host range for these viruses and highlighting the importance of serpentovirus screening in all captive snake populations.","PeriodicalId":501326,"journal":{"name":"Viruses","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142255778","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0