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Zhou X, Li Q, Shi Z, Lu W, Shu C, Zhu J, Wu Y. Assessing the prevalence of human enteric viruses in hospital wastewater to evaluate the effectiveness of wastewater treatment systems. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2025; 289:117488. [PMID: 39644571 DOI: 10.1016/j.ecoenv.2024.117488] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/24/2024] [Revised: 11/23/2024] [Accepted: 12/04/2024] [Indexed: 12/09/2024]
Abstract
In this experiment, we employed Real-time PCR(RT-PCR) and metagenomic Next-Generation Sequencing (mNGS) techniques to detect the presence of Norovirus, Rotavirus Group A, Adenovirus Group F, and Astrovirus in untreated sewage from three major hospitals. A comparison with clinical lab test outcomes revealed Norovirus as having the highest infection rate, followed by Adenovirus Group F and Rotavirus Group A. Despite not testing for Astrovirus in clinical labs, its sewage detection rate was surpassed only by Norovirus, suggesting a potentially high clinical infection rate. Further analysis of these viruses in treated sewage revealed that chlorination failed to eliminate the virus, maintaining viral concentrations in the treated sewage between 10^2 and 10^3 copies/ml. Even though nucleic acid testing methods fail to detect viral actions, the possible danger they present to public safety should not be ignored. During this experiment, viral nucleic acid was extracted directly from the samples without prior concentration. This method, unlike conventional virus detection post-concentration, bypasses concerns such as recovery efficiency, offering a clearer representation of virus concentrations in water samples and facilitating easier operation.
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Affiliation(s)
- Xuebing Zhou
- Department of Clinical Laboratory, No.906 Hospital of People's Liberation Army, Ningbo, China
| | - Qingcao Li
- Department of Clinical Laboratory, The Affiliated LiHuiLi Hospital of Ningbo University, Ningbo, China.
| | - Zhanying Shi
- Department of Clinical Laboratory, No.906 Hospital of People's Liberation Army, Ningbo, China
| | - Wenbo Lu
- Department of Clinical Laboratory, Ningbo Women and Children's Hospital, Ningbo, China
| | - Chunhui Shu
- Department of Laboratory Medicine, Ningbo Mingzhou Hospital, Ningbo, China
| | - Junyao Zhu
- Department of Clinical Laboratory, No.906 Hospital of People's Liberation Army, Ningbo, China
| | - Yong Wu
- Department of Clinical Laboratory, No.906 Hospital of People's Liberation Army, Ningbo, China
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Wang Y, Guo X, Chang S, Zhao L, Li A, Liu X, Ma H, Li Y. Mamastrovirus spike protein: Sequence and structural characterization as a basis for understanding cross-species transmission. Int J Biol Macromol 2024; 282:137366. [PMID: 39537052 DOI: 10.1016/j.ijbiomac.2024.137366] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2024] [Revised: 09/29/2024] [Accepted: 11/05/2024] [Indexed: 11/16/2024]
Abstract
Astroviruses (AstVs) are notable for their propensity for cross-species transmission; however, the molecular determinants underlying this phenomenon remain poorly understood. The spike protein, which is responsible for host cell entry and is a major antigenic determinant, is hypothesized to play a pivotal role. In this study, we observed high sequence variability in the spike region of AstV. Structural analyses have revealed variability, arising from diverse evolutionary relationships, among AstVs of the same host origin. AstV spike proteins can be categorized into six groups, each of which encompasses AstVs from diverse hosts that exhibit high degrees of structural similarity. These six groups correspond to branches observed in the phylogenetic tree. Notably, the spike surface-exposed loops emerged as focal hotspots for B-cell epitopes across groups, with sequence variability that may contribute to immune evasion upon host switching. Differences in the spike structures of AstVs infecting the same host raise the possibility of distinct tissue tropisms and corresponding clinical manifestations. Collectively, our findings provide insights into the roles of spike protein similarities and immune epitope diversity in driving AstV cross-species transmission. Understanding these molecular mechanisms is crucial to predicting and mitigating the emergence of novel AstV strains.
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Affiliation(s)
- Yong Wang
- College of Animal Science and Technology, Anhui Agricultural University, Hefei, PR China
| | - Xu Guo
- College of Animal Science and Technology, Anhui Agricultural University, Hefei, PR China
| | - Shengbo Chang
- Department of Industrial Engineering, Northwestern Polytechnical University, Xi'an 710071, PR China
| | - Liang Zhao
- Animal Husbandry Development Center of Lu'an, Lu'an, PR China
| | - Aolin Li
- College of Animal Science and Technology, Anhui Agricultural University, Hefei, PR China
| | - Xunbi Liu
- College of Animal Science and Technology, Anhui Agricultural University, Hefei, PR China
| | - Hongfu Ma
- College of Animal Science and Technology, Anhui Agricultural University, Hefei, PR China
| | - Yongdong Li
- Municipal Key Laboratory of Virology, Ningbo Municipal Center for Disease Control and Prevention, Ningbo, PR China.
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Amoroso MG, Pucciarelli A, Serra F, Ianiro G, Iafusco M, Fiorito F, Polverino MG, Dimatteo M, Monini M, Ferrara D, Martemucci L, Di Bartolo I, De Carlo E, Fusco G. Ten different viral agents infecting and co-infecting children with acute gastroenteritis in Southern Italy: Role of known pathogens and emerging viruses during and after COVID-19 pandemic. J Med Virol 2024; 96:e29679. [PMID: 38767190 DOI: 10.1002/jmv.29679] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2024] [Revised: 04/18/2024] [Accepted: 05/08/2024] [Indexed: 05/22/2024]
Abstract
Acute gastroenteritis (AGE) represents a world public health relevant problem especially in children. Enteric viruses are the pathogens mainly involved in the episodes of AGE, causing about 70.00% of the cases. Apart from well-known rotavirus (RVA), adenovirus (AdV) and norovirus (NoV), there are various emerging viral pathogens potentially associated with AGE episodes. In this study, the presence of ten different enteric viruses was investigated in 152 fecal samples collected from children hospitalized for gastroenteritis. Real time PCR results showed that 49.3% of them were positive for viral detection with the following prevalence: norovirus GII 19.7%, AdV 15.8%, RVA 10.5%, human parechovirus (HPeV) 5.3%, enterovirus (EV) 3.3%, sapovirus (SaV) 2.6%. Salivirus (SalV), norovirus GI and astrovirus (AstV) 1.3% each, aichivirus (AiV) found in only one patient. In 38.2% of feces only one virus was detected, while co-infections were identified in 11.8% of the cases. Among young patients, 105 were ≤5 years old and 56.0% tested positive for viral detection, while 47 were >5 years old with 40.0% of them infected. Results obtained confirm a complex plethora of viruses potentially implicated in gastroenteritis in children, with some of them previously known for other etiologies but detectable in fecal samples. Subsequent studies should investigate the role of these viruses in causing gastroenteritis and explore the possibility that other symptoms may be ascribed to multiple infections.
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Affiliation(s)
- Maria Grazia Amoroso
- Department of Animal Health, Unit of Virology, Experimental Zooprophylactic Institute of Southern Italy, Portici, Italy
| | - Alessia Pucciarelli
- Department of Animal Health, Unit of Virology, Experimental Zooprophylactic Institute of Southern Italy, Portici, Italy
| | - Francesco Serra
- Department of Animal Health, Unit of Virology, Experimental Zooprophylactic Institute of Southern Italy, Portici, Italy
| | - Giovanni Ianiro
- Istituto Superiore di Sanità Department of Food Safety, Nutrition and Veterinary Public Health, Rome, Italy
| | - Michele Iafusco
- Pediatrics Department, "Pediatria 2", National Specialty Hospital Santobono Pausilipon, Napoli, Italy
| | - Filomena Fiorito
- Department of Veterinary Science and Animal Production, University of Naples Federico II, Naples, Italy
| | - Maria Grazia Polverino
- Department of Animal Health, Unit of Virology, Experimental Zooprophylactic Institute of Southern Italy, Portici, Italy
| | - Maria Dimatteo
- Department of Animal Health, Unit of Virology, Experimental Zooprophylactic Institute of Southern Italy, Portici, Italy
| | - Marina Monini
- Istituto Superiore di Sanità Department of Food Safety, Nutrition and Veterinary Public Health, Rome, Italy
| | - Daniela Ferrara
- Pediatrics Department, "Pediatria 2", National Specialty Hospital Santobono Pausilipon, Napoli, Italy
| | - Luigi Martemucci
- Pediatrics Department, "Pediatria 2", National Specialty Hospital Santobono Pausilipon, Napoli, Italy
| | - Ilaria Di Bartolo
- Istituto Superiore di Sanità Department of Food Safety, Nutrition and Veterinary Public Health, Rome, Italy
| | - Esterina De Carlo
- Department of Animal Health, Unit of Virology, Experimental Zooprophylactic Institute of Southern Italy, Portici, Italy
| | - Giovanna Fusco
- Department of Animal Health, Unit of Virology, Experimental Zooprophylactic Institute of Southern Italy, Portici, Italy
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McCoy R, Oldroyd S, Yang W, Wang K, Hoven D, Bulmer D, Zilbauer M, Owens RM. In Vitro Models for Investigating Intestinal Host-Pathogen Interactions. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2024; 11:e2306727. [PMID: 38155358 PMCID: PMC10885678 DOI: 10.1002/advs.202306727] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/15/2023] [Revised: 12/01/2023] [Indexed: 12/30/2023]
Abstract
Infectious diseases are increasingly recognized as a major threat worldwide due to the rise of antimicrobial resistance and the emergence of novel pathogens. In vitro models that can adequately mimic in vivo gastrointestinal physiology are in high demand to elucidate mechanisms behind pathogen infectivity, and to aid the design of effective preventive and therapeutic interventions. There exists a trade-off between simple and high throughput models and those that are more complex and physiologically relevant. The complexity of the model used shall be guided by the biological question to be addressed. This review provides an overview of the structure and function of the intestine and the models that are developed to emulate this. Conventional models are discussed in addition to emerging models which employ engineering principles to equip them with necessary advanced monitoring capabilities for intestinal host-pathogen interrogation. Limitations of current models and future perspectives on the field are presented.
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Affiliation(s)
- Reece McCoy
- Department of Chemical Engineering and BiotechnologyUniversity of CambridgeCambridgeCB3 0ASUK
| | - Sophie Oldroyd
- Department of Chemical Engineering and BiotechnologyUniversity of CambridgeCambridgeCB3 0ASUK
| | - Woojin Yang
- Department of Chemical Engineering and BiotechnologyUniversity of CambridgeCambridgeCB3 0ASUK
- Wellcome‐MRC Cambridge Stem Cell InstituteUniversity of CambridgeCambridgeCB2 0AWUK
| | - Kaixin Wang
- Department of Chemical Engineering and BiotechnologyUniversity of CambridgeCambridgeCB3 0ASUK
| | - Darius Hoven
- Department of Chemical Engineering and BiotechnologyUniversity of CambridgeCambridgeCB3 0ASUK
| | - David Bulmer
- Department of PharmacologyUniversity of CambridgeCambridgeCB2 1PDUK
| | - Matthias Zilbauer
- Wellcome‐MRC Cambridge Stem Cell InstituteUniversity of CambridgeCambridgeCB2 0AWUK
| | - Róisín M. Owens
- Department of Chemical Engineering and BiotechnologyUniversity of CambridgeCambridgeCB3 0ASUK
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Delgado-Cunningham K, López T, Khatib F, Arias CF, DuBois RM. Structure of the divergent human astrovirus MLB capsid spike. Structure 2022; 30:1573-1581.e3. [PMID: 36417907 PMCID: PMC9722636 DOI: 10.1016/j.str.2022.10.010] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2022] [Revised: 08/30/2022] [Accepted: 10/27/2022] [Indexed: 11/23/2022]
Abstract
Despite their worldwide prevalence and association with human disease, the molecular bases of human astrovirus (HAstV) infection and evolution remain poorly characterized. Here, we report the structure of the capsid protein spike of the divergent HAstV MLB clade (HAstV MLB). While the structure shares a similar folding topology with that of classical-clade HAstV spikes, it is otherwise strikingly different. We find no evidence of a conserved receptor-binding site between the MLB and classical HAstV spikes, suggesting that MLB and classical HAstVs utilize different receptors for host-cell attachment. We provide evidence for this hypothesis using a novel HAstV infection competition assay. Comparisons of the HAstV MLB spike structure with structures predicted from its sequence reveal poor matches, but template-based predictions were surprisingly accurate relative to machine-learning-based predictions. Our data provide a foundation for understanding the mechanisms of infection by diverse HAstVs and can support structure determination in similarly unstudied systems.
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Affiliation(s)
- Kevin Delgado-Cunningham
- Department of Biomolecular Engineering, University of California, Santa Cruz, Santa Cruz, CA 95064, USA
| | - Tomás López
- Departamento de Genética del Desarrollo y Fisiología Molecular, Instituto de Biotecnología, Universidad Nacional Autónoma de México, Cuernavaca, Morelos, 62210, Mexico
| | - Firas Khatib
- Department of Computer and Information Science, University of Massachusetts Dartmouth, Dartmouth, MA 02747, USA
| | - Carlos F Arias
- Departamento de Genética del Desarrollo y Fisiología Molecular, Instituto de Biotecnología, Universidad Nacional Autónoma de México, Cuernavaca, Morelos, 62210, Mexico
| | - Rebecca M DuBois
- Department of Biomolecular Engineering, University of California, Santa Cruz, Santa Cruz, CA 95064, USA.
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