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Ran X, Hu Z, Wang J, Yang Z, Li Z, Wen X. Prevalence of Senecavirus A in pigs from 2014 to 2020: a global systematic review and meta-analysis. J Vet Sci 2023; 24:e48. [PMID: 37271515 DOI: 10.4142/jvs.22307] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2022] [Revised: 04/23/2023] [Accepted: 05/10/2023] [Indexed: 06/06/2023] Open
Abstract
BACKGROUND Senecavirus A (SVA), a member of the family Picornaviridae, is newly discovered, which causes vesicular lesions, lameness in swine, and even death in neonatal piglets. SVA has rapidly spread worldwide in recent years, especially in Asia. OBJECTIVES We conducted a global meta-analysis and systematic review to determine the status of SVA infection in pigs. METHODS Through PubMed, VIP Chinese Journals Database, China National Knowledge Infrastructure, and Wanfang Data search data from 2014 to July 26, 2020, a total of 34 articles were included in this analysis based on our inclusion criteria. We estimated the pooled prevalence of SVA in pigs by the random effects model. A risk of bias assessment of the studies and subgroup analysis to explain heterogeneity was undertaken. RESULTS We estimated the SVA prevalence to be 15.90% (1,564/9,839; 95% confidence interval [CI], 44.75-65.89) globally. The prevalence decreased to 11.06% (945/8,542; 95% CI, 28.25-50.64) after 2016. The highest SVA prevalence with the VP1-based RT-PCR and immunohistochemistry assay was 58.52% (594/1,015; 95% CI, 59.90-83.96) and 85.54% (71/83; 95% CI, 76.68-100.00), respectively. Besides, the SVA prevalence in piglet herds was the highest at 71.69% (119/166; 95% CI, 68.61-98.43) (p < 0.05). Moreover, our analysis confirmed that the subgroups, including country, sampling year, sampling position, detected gene, detection method, season, age, and climate, could be the heterogeneous factors associated with SVA prevalence. CONCLUSIONS The results indicated that SVA widely exists in various countries currently. Therefore, more prevention and control policies should be proposed to enhance the management of pig farms and improve breeding conditions and the environment to reduce the spread of SVA.
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Affiliation(s)
- Xuhua Ran
- School of Animal Science and Technology, Hainan University, Haikou 570228, China
| | - Zhenru Hu
- School of Animal Science and Technology, Hainan University, Haikou 570228, China
| | - Jun Wang
- College of Animal Science and Technology, Heilongjiang Bayi Agricultural University, Daqing 163319, China
| | - Zhiyuan Yang
- College of Animal Science and Technology, Heilongjiang Bayi Agricultural University, Daqing 163319, China
| | - Zhongle Li
- College of Animal Science and Technology, Jilin Agricultural University, Changchun 130018, China.
| | - Xiaobo Wen
- School of Animal Science and Technology, Hainan University, Haikou 570228, China.
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Chen JS, Tsai HC, Nagarajan V, Hsu BM. Adenovirus in fishery harbours and identification of contamination sources. WATER RESEARCH 2022; 219:118538. [PMID: 35526430 DOI: 10.1016/j.watres.2022.118538] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/25/2021] [Revised: 04/29/2022] [Accepted: 04/30/2022] [Indexed: 06/14/2023]
Abstract
Adenoviruses (AdVs) are a major cause of clinical infections and have been proposed as indicators of water quality. However, quantitative data on the environmental prevalence of AdVs is lacking. We investigated the prevalence, distribution, seasonal occurrence, quantity, and genotype of AdVs in 13 fishing harbours in Taiwan. AdVs in the water samples were isolated by membrane filtration and the AdV DNA was extracted. Next, AdVs were detected using nested polymerase chain reaction. Genotyping and phylogenetic analysis were performed to identify various AdV genotypes present in the water samples. The F species human AdV (HAdV) serotype 41 (63.6%) and C species porcine AdV (PAdV) serotype 5 (33.3%) were more prevalent than the other serotypes. The prevalence of AdVs was highest in the fall, followed by in the spring and summer. Among the fishing harbours, the highest detection rate of AdVs was observed in Yenpudongang in all seasons. However, Puoziliao was the only site at which AdVs were not detected during the study period. AdV detection at sampling sites may be correlated with sewage and livestock wastewater discharge via outflow of nearby rivers to fishing ports. Statistical analysis (Mann-Whitney U test) based on data from water quality indicators revealed that the presence of AdVs was significantly associated with the heterotrophic plate count, pH, and salinity. Human and swine population data from nearby local townships and river/drainage basins were collected from the Taiwan Central Government's website. The data were analyzed using Spearman's rank correlation coefficient to determine the relationship between the prevalence of AdVs, HAdVs, and PAdVs in fishing harbours, and microbial water quality indicators. Statistical evidence indicated that the detection levels of HAdVs and PAdVs in fishing harbours were mainly associated with human and swine populations in the corresponding river/drainage basin, respectively. Additionally, the swine population in the river/drainage basin was positively correlated with microbial water quality indicators.
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Affiliation(s)
- Jung-Sheng Chen
- Department of Medical Research, E-Da Hospital, Kaohsiung, Taiwan
| | - Hsin-Chi Tsai
- Department of Psychiatry, School of Medicine, Tzu Chi University, Hualien, Taiwan; Department of Psychiatry, Tzu-Chi General Hospital, Hualien, Taiwan
| | - Viji Nagarajan
- Department of Earth and Environmental Sciences, National Chung Cheng University, 168 University Road, Minhsiung Township, Chiayi 62102, Taiwan
| | - Bing-Mu Hsu
- Department of Earth and Environmental Sciences, National Chung Cheng University, 168 University Road, Minhsiung Township, Chiayi 62102, Taiwan.
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Li Z, Wang Q, Sun K, Feng J. Prevalence of Batrachochytrium dendrobatidis in Amphibians From 2000 to 2021: A Global Systematic Review and Meta-Analysis. Front Vet Sci 2022; 8:791237. [PMID: 34977222 PMCID: PMC8718539 DOI: 10.3389/fvets.2021.791237] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2021] [Accepted: 11/26/2021] [Indexed: 11/16/2022] Open
Abstract
Chytridiomycosis is an amphibian fungal disease caused by Batrachochytrium dendrobatidis (Bd), which has caused large-scale death and population declines on several continents around the world. To determine the current status of Bd infection in amphibians, we conducted a global meta-analysis. Using PubMed, ScienceDirect, SpringerLink, China National Knowledge Infrastructure (CNKI) and Wanfang database searches, we retrieved a total of 111 articles from 2000 to 2021. Based on these, we estimated the Bd prevalence to be 18.54% (95% CI: 13.76–20.52) in current extent amphibians. Among these populations, the prevalence of Bd in Asia was the lowest at 7.88% (95% CI: 1.92–8.71). Further, no Bd infection was found in Vietnam. However, the prevalence of Bd in Oceania was the highest at 36.34% (95% CI: 11.31–46.52). The Bd prevalence in Venezuela was as high as 49.77% (95% CI: 45.92–53.62). After 2009, the global Bd prevalence decreased to 18.91% (95% CI: 13.23–21.56). The prevalence of Bd in epizootic populations was significantly higher than enzootic populations. The highest prevalence of Bd was detected with real-time PCR at 20.11% (95% CI: 13.12–21.38). The prevalence of Bd in frogs was the highest at 20.04% (95% CI: 13.52–21.71), and this different host was statistically significant (P < 0.05). At the same time, we analyzed the geographic factors (longitude, latitude, elevation, rainfall and temperature) that impacted the fungal prevalence in amphibians. Our meta-analysis revealed that factors including region, disease dynamic, detection method, host and climate may be sources of the observed heterogeneity. These results indicate that chytridiomycosis was a consistent threat to amphibians from 2000 to 2021. Based on different habitat types and geographical conditions, we recommend formulating corresponding control plans and adopting reasonable and efficient biological or chemical methods to reduce the severity of such diseases.
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Affiliation(s)
- Zhongle Li
- Jilin Provincial Key Laboratory of Animal Resource Conservation and Utilization, Northeast Normal University, Changchun, China.,College of Animal Science and Technology, Jilin Agricultural University, Changchun, China
| | - Qi Wang
- College of Animal Science and Technology, Jilin Agricultural University, Changchun, China
| | - Keping Sun
- Jilin Provincial Key Laboratory of Animal Resource Conservation and Utilization, Northeast Normal University, Changchun, China.,Key Laboratory of Vegetation Ecology, Ministry of Education, Changchun, China
| | - Jiang Feng
- Jilin Provincial Key Laboratory of Animal Resource Conservation and Utilization, Northeast Normal University, Changchun, China.,College of Animal Science and Technology, Jilin Agricultural University, Changchun, China
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4
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Molecular detection and clinical characteristics of bacterial and viral main etiological agents causing respiratory tract infections in Tehran, Iran. GENE REPORTS 2021. [DOI: 10.1016/j.genrep.2021.101267] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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Sano D, Watanabe R, Oishi W, Amarasiri M, Kitajima M, Okabe S. Viral Interference as a Factor of False-Negative in the Infectious Adenovirus Detection Using Integrated Cell Culture-PCR with a BGM Cell Line. FOOD AND ENVIRONMENTAL VIROLOGY 2021; 13:84-92. [PMID: 33392927 DOI: 10.1007/s12560-020-09453-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/12/2020] [Accepted: 11/21/2020] [Indexed: 06/12/2023]
Abstract
This study investigated the influence of viral interference on the detection of enteric viruses using the integrated cell culture (ICC)-PCR with a BGM cell line. It was possible to detect 102 plaque-forming units (PFU)/flask of enterovirus 71 (EV71) in spite of the presence of 104 PFU/flask of adenovirus 40 (AdV40). Meanwhile, 104 PFU/flask of AdV40 was not detected in the presence of 102 PFU/flask of EV71. This inhibition of AdV40 detection using ICC-PCR was attributable to the growth of EV71, because the addition of a growth inhibitor of EV71 (rupintrivir) neutralized the detection inhibition of AdV40. The growth inhibition of AdV40 under co-infection with EV71 is probably caused by the immune responses of EV71-infected cells. AdV is frequently used as a fecal contamination indicator of environmental water, but this study demonstrated that false-negative detection of infectious AdV using ICC-PCR could be caused by the co-existence of infectious EV in a water sample. The addition of rupintrivir could prevent false-negative detection of AdV using ICC-PCR. This study, therefore, emphasizes the importance of confirming the presence of multiple enteric viruses in a sample derived from environmental water prior to the application of ICC-PCR because the viral interference phenomenon may lead to the false-negative detection of target viruses.
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Affiliation(s)
- Daisuke Sano
- Department of Frontier Sciences for Advanced Environment, Graduate School of Environmental Studies, Tohoku University, Aoba 6-6-06, Aramaki, Aoba-ku, Sendai, Miyagi, 980-8579, Japan.
- Department of Civil and Environmental Engineering, Graduate School of Engineering, Tohoku University, Aoba 6-6-06, Aramaki, Aoba-ku, Sendai, Miyagi, 980-8579, Japan.
| | - Ryosuke Watanabe
- Division of Environmental Engineering, Faculty of Engineering, Hokkaido University, North 13, West 8, Kita-ku, Sapporo, Hokkaido, 060-8628, Japan
| | - Wakana Oishi
- Department of Civil and Environmental Engineering, Graduate School of Engineering, Tohoku University, Aoba 6-6-06, Aramaki, Aoba-ku, Sendai, Miyagi, 980-8579, Japan
| | - Mohan Amarasiri
- Department of Health Science, School of Allied Health Sciences, Kitasato University, A1-505, 1-15-1 Kitasato, Minami, Sagamihara, Kanagawa, 252-0373, Japan
| | - Masaaki Kitajima
- Division of Environmental Engineering, Faculty of Engineering, Hokkaido University, North 13, West 8, Kita-ku, Sapporo, Hokkaido, 060-8628, Japan
| | - Satoshi Okabe
- Division of Environmental Engineering, Faculty of Engineering, Hokkaido University, North 13, West 8, Kita-ku, Sapporo, Hokkaido, 060-8628, Japan
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Shao S, Li S, Liu C, Zhang W, Zhang Z, Zhu S, Feng Y, Pan Y. Toosendanin induces apoptosis of MKN‑45 human gastric cancer cells partly through miR‑23a‑3p‑mediated downregulation of BCL2. Mol Med Rep 2020; 22:1793-1802. [PMID: 32582989 PMCID: PMC7411345 DOI: 10.3892/mmr.2020.11263] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2019] [Accepted: 05/22/2020] [Indexed: 12/17/2022] Open
Abstract
Toosendanin (TSN) is a tetracyclic triterpenoid extracted from Melia toosendan Sieb, et Zucc, which primarily grows in specific areas of China. Although toosendanin (TSN) exerts antitumoral effects on various human cancer cells, its influence on gastric cancer (GC) is remains to be elucidated. MicroRNAs (miRNAs/miRs) serve crucial roles in apoptosis and proliferation of cancer cells. miR-23a-3p has been shown to be associated with human GC; however, the specific function of miR-23a-3p in GC remains unclear. Therefore, the present study aimed to elucidate the role of miR-23a-3p in the regulation of GC cell proliferation and apoptosis induced in vitro by TSN treatment. Subsequently, apoptosis-related genes expression levels were quantified by reverse transcription-quantitative PCR and western blot analysis, respectively, and the target relationship between miR-23a-3p and BCL2 was determined by luciferase reporter gene analysis. Additionally, cell proliferation and apoptosis experiments were carried out. The results indicated that TSN inhibited proliferation and induced apoptosis in MKN-45 cells. Moreover, it upregulated the expression of miR-23a-3p. B-cell lymphoma-2 (BCL2) was identified as a potential target gene of miR-23a-3p, which was demonstrated to bind to the 3′-untranslated region of BCL2 mRNA, as detected by the luciferase reporter assay. Further studies revealed that BCL2 expression was downregulated following overexpression of miR-23a-3p. In addition, the overexpression of the miR-23a-3p inhibited proliferation, induced G1 arrest and increased apoptosis in MKN-45 cells. The results of the present study demonstrated that miR-23a-3p inhibited proliferation and induced apoptosis of GC cells, which may be attributable to its direct targeting of BCL2. These results may provide a novel insight into the apoptosis of GC cells, and may lead to investigations into the mechanisms of the effects of TSN.
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Affiliation(s)
- Shuli Shao
- Department of Life Science and Agroforestry, Qiqihar University, Qiqihar, Heilongjiang 161006, P.R. China
| | - Shanshan Li
- Department of Life Science and Agroforestry, Qiqihar University, Qiqihar, Heilongjiang 161006, P.R. China
| | - Chang Liu
- Department of Life Science and Agroforestry, Qiqihar University, Qiqihar, Heilongjiang 161006, P.R. China
| | - Weiwei Zhang
- Department of Life Science and Agroforestry, Qiqihar University, Qiqihar, Heilongjiang 161006, P.R. China
| | - Zhenzhu Zhang
- Department of Life Science and Agroforestry, Qiqihar University, Qiqihar, Heilongjiang 161006, P.R. China
| | - Shaowei Zhu
- Department of Life Science and Agroforestry, Qiqihar University, Qiqihar, Heilongjiang 161006, P.R. China
| | - Yunjianan Feng
- Department of Life Science and Agroforestry, Qiqihar University, Qiqihar, Heilongjiang 161006, P.R. China
| | - Yang Pan
- Department of Life Science and Agroforestry, Qiqihar University, Qiqihar, Heilongjiang 161006, P.R. China
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Gebrekidan H, Perera PK, Ghafar A, Abbas T, Gasser RB, Jabbar A. An appraisal of oriental theileriosis and the Theileria orientalis complex, with an emphasis on diagnosis and genetic characterisation. Parasitol Res 2020; 119:11-22. [PMID: 31811422 PMCID: PMC7223495 DOI: 10.1007/s00436-019-06557-7] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2019] [Accepted: 11/19/2019] [Indexed: 12/17/2022]
Abstract
Oriental theileriosis, a tick-borne disease of bovids caused by members of the Theileria orientalis complex, has a worldwide distribution. Globally, at least 11 distinct genotypes of T. orientalis complex, including type 1 (chitose), type 2 (ikeda), type 3 (buffeli), types 4 to 8, and N1-N3, have been described based on the sequence of the major piroplasm surface protein (MPSP) gene. Of these 11 genotypes, mainly ikeda and chitose are known to be pathogenic and cause considerable morbidity (including high fever, anaemia, jaundice and abortion), production losses and/or mortality in cattle. Mixed infections with two or more genotypes of T. orientalis is common, but do not always lead to a clinical disease, posing challenges in the diagnosis of asymptomatic or subclinical forms of oriental theileriosis. The diagnosis of oriental theileriosis is usually based on clinical signs, the detection of piroplasms of T. orientalis in blood smears, and/or the use of serological or molecular techniques. This paper reviews current methods used for the diagnosis of T. orientalis infections and the genetic characterisation of members of the T. orientalis complex, and proposes that advanced genomic tools should be established for investigations of these and related haemoparasites.
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Affiliation(s)
- Hagos Gebrekidan
- Department of Veterinary Biosciences, Faculty of Veterinary and Agricultural Sciences, The University of Melbourne, Werribee, Victoria, Australia
| | - Piyumali K Perera
- Department of Zoology, Faculty of Science, The University of Peradeniya, Peradeniya, 20400, Sri Lanka
| | - Abdul Ghafar
- Department of Veterinary Biosciences, Faculty of Veterinary and Agricultural Sciences, The University of Melbourne, Werribee, Victoria, Australia
| | - Tariq Abbas
- Department of Epidemiology and Public Health, Cholistan University of Veterinary and Animal Sciences, Bahawalpur, Punjab, Pakistan
| | - Robin B Gasser
- Department of Veterinary Biosciences, Faculty of Veterinary and Agricultural Sciences, The University of Melbourne, Werribee, Victoria, Australia
| | - Abdul Jabbar
- Department of Veterinary Biosciences, Faculty of Veterinary and Agricultural Sciences, The University of Melbourne, Werribee, Victoria, Australia.
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Bortagaray V, Lizasoain A, Piccini C, Gillman L, Berois M, Pou S, Díaz MDP, Tort FL, Colina R, Victoria M. Microbial Source Tracking Analysis Using Viral Indicators in Santa Lucía and Uruguay Rivers, Uruguay. FOOD AND ENVIRONMENTAL VIROLOGY 2019; 11:259-267. [PMID: 30945138 DOI: 10.1007/s12560-019-09384-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/13/2019] [Accepted: 03/30/2019] [Indexed: 05/27/2023]
Abstract
The aim of this study was to determine the origin (human, bovine or porcine) and the concentration of the fecal sources of contamination in waters from Santa Lucía basin and Uruguay River in Uruguay by using host-specific viral markers (adenoviruses and polyomaviruses) as microbial source tracking (MST). Between June 2015 and May 2016, monthly collections of surface water samples were performed in six sites in Santa Lucía basin and four sites in Uruguay River (n = 120 samples). Viral concentration was carried out using an absorption-elution method. Detection and quantification of human and porcine adenovirus (HAdV and PAdV, respectively) and human and bovine polyomavirus (HPyV and BoPyV, respectively) were performed by quantitative PCR (qPCR). To evaluate the infectivity of circulating HAdV, an integrated cell culture-qPCR (ICC-qPCR) was used. A logistic regression analysis was carried out to estimate the influence of environmental variables on the virus presence in surface waters. Overall, HAdV was the prevalent (18%; 21/120) followed by BoPyV (11%; 13/120) and HPyV (3%; 3/120), whereas PAdV was not detected in this study. The mean concentration ranged from 1.5 × 104 genomic copies/L (gc/L) for HAdV to 1.8 × 102 gc/L for HPyV. Infective HAdVs were observed in two out of ten analyzed samples. A significant effect of environmental temperature (p = 0.001) and river (p = 0.012) on the presence of human viruses was found. These results suggest that fecal contamination could affect the water quality of these rivers, showing deficiencies in the procedure of sewage discharge from regional cities, livestock and dairy farms.
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Affiliation(s)
- Viviana Bortagaray
- Laboratory of Molecular Virology, Department of Biological Sciences, CENUR Litoral Norte, Sede Salto, Universidad de la República, Salto, Uruguay
| | - Andrés Lizasoain
- Laboratory of Molecular Virology, Department of Biological Sciences, CENUR Litoral Norte, Sede Salto, Universidad de la República, Salto, Uruguay
| | - Claudia Piccini
- Department of Microbiology, Instituto de Investigaciones Biológicas Clemente Estable, Montevideo, Uruguay
| | - Luciana Gillman
- Virology Section, School of Sciences, Universidad de la República, Montevideo, Uruguay
| | - Mabel Berois
- Virology Section, School of Sciences, Universidad de la República, Montevideo, Uruguay
| | - Sonia Pou
- Institute of Research in Health Sciences (INICSA), Faculty of Medical Sciences, CONICET and Biostatistics Unit, School of Nutrition, Faculty of Medical Sciences, National University of Córdoba, Córdoba, Argentina
| | - María Del Pilar Díaz
- Institute of Research in Health Sciences (INICSA), Faculty of Medical Sciences, CONICET and Biostatistics Unit, School of Nutrition, Faculty of Medical Sciences, National University of Córdoba, Córdoba, Argentina
| | - Fernando López Tort
- Laboratory of Molecular Virology, Department of Biological Sciences, CENUR Litoral Norte, Sede Salto, Universidad de la República, Salto, Uruguay
| | - Rodney Colina
- Laboratory of Molecular Virology, Department of Biological Sciences, CENUR Litoral Norte, Sede Salto, Universidad de la República, Salto, Uruguay
| | - Matías Victoria
- Laboratory of Molecular Virology, Department of Biological Sciences, CENUR Litoral Norte, Sede Salto, Universidad de la República, Salto, Uruguay.
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Prado T, de Castro Bruni A, Barbosa MRF, Garcia SC, de Jesus Melo AM, Sato MIZ. Performance of wastewater reclamation systems in enteric virus removal. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 678:33-42. [PMID: 31075600 DOI: 10.1016/j.scitotenv.2019.04.435] [Citation(s) in RCA: 45] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/28/2019] [Revised: 04/29/2019] [Accepted: 04/29/2019] [Indexed: 05/18/2023]
Abstract
Analysis of virus removal by tertiary or advanced sewage treatment processes is an emerging topic due to importance of reusing water on a global level. This study aimed to monitor important human viral pathogens: the human adenovirus (HAdV), JC polyomavirus (JCV) and Species A rotaviruses (RVA) in urban sewage, secondary effluents and reclaimed water from metropolitan São Paulo (MSP), Brazil. Four large wastewater treatment plants (WWTPs) in MSP were sampled monthly during a one-year period (April 2015 to March 2016). The viruses were quantified by quantitative PCR (qPCR), and HAdV viability was tested by the integrated cell culture (ICC)-qPCR assay. WWTPs are composed of activated sludge processes and different tertiary treatments (coagulation/sedimentation, sand-anthracite filters, membrane bioreactors (MBRs)/reverse osmosis (RO) and disinfection by chlorination). Physicochemical parameters were also evaluated to verify association with density of viruses detected in different treatment stages. HAdV, JCV and RVA were consistently detected (100%) in the sewage influent samples (range: 106-108 genome copies GC/L). In the secondary effluent, HAdV was detected in 100% (48/48) of the analysed samples, JCV in 85.4% and RVA in 97.9% (range: 104-107 GC/L for all viruses tested). HAdV was the most frequently detected virus in the tertiary effluent (62.2%) (28/45), exhibiting a viability between 0 and 44% of the tested samples in the wastewater reclamation systems. The MBR/RO systems demonstrated better virus removal efficiencies (range: 2.3-2.9 log10). Temperature, pH, turbidity and total organic carbon presented association with the viral density in the reclaimed water samples. Presence of viruses in treated effluents can indicates health risks depending on uses of recovery water. Further risk assessment studies should be conducted to better assess health risks under different exposure scenarios for water recovery in urban settings.
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Affiliation(s)
- Tatiana Prado
- Department of Environmental Analysis, Division of Microbiology and Parasitology, Environmental Company of the São Paulo State (CETESB), Av. Prof. Frederico Hermann Jr., 345, São Paulo, SP 05459-900, Brazil.
| | - Antônio de Castro Bruni
- Department of Environmental Analysis, Division of Microbiology and Parasitology, Environmental Company of the São Paulo State (CETESB), Av. Prof. Frederico Hermann Jr., 345, São Paulo, SP 05459-900, Brazil
| | - Mikaela Renata Funada Barbosa
- Department of Environmental Analysis, Division of Microbiology and Parasitology, Environmental Company of the São Paulo State (CETESB), Av. Prof. Frederico Hermann Jr., 345, São Paulo, SP 05459-900, Brazil
| | - Suzi Cristina Garcia
- Department of Environmental Analysis, Division of Microbiology and Parasitology, Environmental Company of the São Paulo State (CETESB), Av. Prof. Frederico Hermann Jr., 345, São Paulo, SP 05459-900, Brazil
| | - Adalgisa Maria de Jesus Melo
- Department of Environmental Analysis, Division of Microbiology and Parasitology, Environmental Company of the São Paulo State (CETESB), Av. Prof. Frederico Hermann Jr., 345, São Paulo, SP 05459-900, Brazil
| | - Maria Inês Zanoli Sato
- Department of Environmental Analysis, Division of Microbiology and Parasitology, Environmental Company of the São Paulo State (CETESB), Av. Prof. Frederico Hermann Jr., 345, São Paulo, SP 05459-900, Brazil
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Girardi V, Mena KD, Albino SM, Demoliner M, Gularte JS, de Souza FG, Rigotto C, Quevedo DM, Schneider VE, Paesi SO, Tarwater PM, Spilki FR. Microbial risk assessment in recreational freshwaters from southern Brazil. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 651:298-308. [PMID: 30240914 DOI: 10.1016/j.scitotenv.2018.09.177] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/20/2018] [Revised: 09/12/2018] [Accepted: 09/13/2018] [Indexed: 06/08/2023]
Abstract
In this study, total coliforms (TC), Escherichia coli, enterovirus (EV), rotavirus (RV), and human mastadenovirus species C and F (HAdV-C and HAdV-F) were evaluated in water samples from Belo Stream. For HAdV-C and F, the infectivity was assessed by integrated cell culture quantitative real-time polymerase chain reaction (ICC-qPCR). Samples were collected monthly (May/2015 to April/2016) at four sites. Viral analyses were performed for both ultracentrifuge-concentrated and unconcentrated samples. For site P4 (used for recreational purposes), QMRA was applied to estimate health risks associated with exposure to E. coli and HAdV-C and F. TC and E. coli were present throughout the collection period. EV and RV were not detected. HAdV-C were present in 8.51% (1.89E + 06 to 2.28E + 07 GC (Genomic Copies)/L) and 21.27% (2.36E + 05 to 1.29E + 07 GC/L) for unconcentrated and concentrated samples, respectively. For HAdV-F were 12.76% (2.77E + 07 to 3.31E + 08 GC/L) and 48.93% (1.10E + 05 to 4.50E + 08 GC/L) for unconcentrated and concentrated samples, respectively. For unconcentrated samples, infectivity for HAdV-C was detected in 37.20% (1st ICC-qPCR) and 25.58% (2nd ICC-qPCR). For HAdV-F, infectivity was detected in 6.97% (1st ICC-qPCR) and 6.97% (2nd ICC-qPCR). For concentrated samples, HAdV-C infectious was observed in 17.02% (1st ICC-qPCR) and in 8.51% (2nd ICC-qPCR). For HAdV-F, were present in 8.51% for both 1st and 2nd ICC-qPCR. Statistical analyzes showed significant difference between the collection sites when analyzed the molecular data of HAdV-F, data of TC and E. coli. Correlation tests showed direct correlation between HAdV-F with E. coli and TC. E. coli concentrations translated to the lowest estimates of infection risks (8.58E-05 to 2.17E-03). HAdV-F concentrations were associated with the highest infection risks at 9.99E-01 and for group C, 1.29E-01 to 9.99E-01. These results show that commonly used bacterial indicators for water quality may not infer health risks associated with viruses in recreational freshwaters.
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Affiliation(s)
- Viviane Girardi
- Laboratório de Microbiologia Molecular, Universidade Feevale, ERS 239, no 2755, Novo Hamburgo, RS 93352-000, Brazil.
| | - Kristina D Mena
- School of Public Health, The University of Texas Health Science Center at Houston, El Paso, TX 79902, USA
| | - Suelen M Albino
- Departamento de Bioquímica, Instituto de Ciências Básicas da Saúde, Universidade Federal do Rio Grande do Sul, Ramiro Barcelos, no 2600, Porto Alegre, RS, Brazil
| | - Meriane Demoliner
- Laboratório de Microbiologia Molecular, Universidade Feevale, ERS 239, no 2755, Novo Hamburgo, RS 93352-000, Brazil
| | - Juliana S Gularte
- Laboratório de Microbiologia Molecular, Universidade Feevale, ERS 239, no 2755, Novo Hamburgo, RS 93352-000, Brazil
| | - Fernanda G de Souza
- Laboratório de Vírus, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Av. Antônio Carlos, no 6627, Belo Horizonte, MG, Brazil
| | - Caroline Rigotto
- Laboratório de Microbiologia Molecular, Universidade Feevale, ERS 239, no 2755, Novo Hamburgo, RS 93352-000, Brazil
| | - Daniela M Quevedo
- Programa de Pós-Graduação em Qualidade Ambiental, Universidade Feevale, ERS 239, no 2755, Novo Hamburgo, RS 93352-000, Brazil
| | - Vania E Schneider
- Instituto de Saneamento Ambiental (ISAM), Universidade de Caxias do Sul, Rua Francisco Getúlio Vargas, no 1130, Caxias do Sul, RS 95070-560, Brazil
| | - Suelen O Paesi
- Laboratório de Diagnóstico Molecular, Instituto de Biotecnologia, Universidade de Caxias do Sul, Rua Francisco Getúlio Vargas, no 1130, Caxias do Sul, RS 95070-560, Brazil
| | - Patrick M Tarwater
- School of Public Health, Department of Biostatistics, The University of Texas Health Science Center at Houston, El Paso, TX 79902, USA
| | - Fernando R Spilki
- Laboratório de Microbiologia Molecular, Universidade Feevale, ERS 239, no 2755, Novo Hamburgo, RS 93352-000, Brazil
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Souza FGD, Silva FPD, Staggemeier R, Rigotto C, Spilki FR. Low occurrence of Hepatitis A virus in water samples from an urban area of Southern Brazil. Rev Inst Med Trop Sao Paulo 2018; 60:e69. [PMID: 30427404 PMCID: PMC6223251 DOI: 10.1590/s1678-9946201860069] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2018] [Accepted: 09/24/2018] [Indexed: 12/26/2022] Open
Abstract
Hepatitis A virus (HAV), a member of Picornaviridae family, is the main causative agent of acute viral hepatitis in the world, mainly in developing countries. HAV may be present in contaminated water and food and its presence is often associated to a lesser extent with socioeconomic factors and environmental quality. The main goals in the present study were to standardize a cell culture combined to a polymerase chain reaction protocol for the detection and quantification of viral viability and analyze whether the virus could be found in water samples collected in four urban streams of Sinos River watershed. Virus recovery was assayed from known virus concentrations measured in experimentally contaminated raw and ultrapure water (MilliQ®). Recovery rates ranged from 270% in raw water to 15,000% in ultrapure water. In a second step, a qPCR coupled to a previous passage in cells, demonstrated more analytical sensitivity when compared to samples assayed without a previous passage in cell cultures. HAV genome was detected in only 1 of 84 samples analyzed, pointing to a very low occurrence of HAV in water samples in the studied region. These findings are remarkable, since no more than 5% of the domestic sewage in this area is treated pointing to a low occurrence of HAV in the population living nearby during the study period.
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Affiliation(s)
- Fernanda Gil de Souza
- Universidade Feevale, Laboratório de Microbiologia Molecular, Novo Hamburgo, Rio Grande do Sul, Brazil
| | - Francini Pereira da Silva
- Universidade Feevale, Laboratório de Microbiologia Molecular, Novo Hamburgo, Rio Grande do Sul, Brazil
| | - Rodrigo Staggemeier
- Universidade Feevale, Laboratório de Microbiologia Molecular, Novo Hamburgo, Rio Grande do Sul, Brazil
| | - Caroline Rigotto
- Universidade Feevale, Laboratório de Microbiologia Molecular, Novo Hamburgo, Rio Grande do Sul, Brazil
| | - Fernando Rosado Spilki
- Universidade Feevale, Laboratório de Microbiologia Molecular, Novo Hamburgo, Rio Grande do Sul, Brazil
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12
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Gularte JS, Staggemeier R, Demoliner M, Heck TMS, Heldt FH, Ritzel RGF, Rigotto C, Henzel A, Spilki FR. Human adenovirus in tissues of freshwater snails living in contaminated waters. ENVIRONMENTAL MONITORING AND ASSESSMENT 2017; 189:276. [PMID: 28523581 DOI: 10.1007/s10661-017-5979-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/18/2016] [Accepted: 04/28/2017] [Indexed: 06/07/2023]
Abstract
Human adenovirus (HAdV) is resistant to environment and can be used as a marker to detect fecal contamination. Considering the importance of freshwater snails in the aquatic environment, their use as concentrators for HAdV is a complementary tool for viral analysis of water. The goal of the study was to detect HAdV in snails and surface water collected from wetlands of the Sinos River (Rio Grande do Sul, Brazil) basin and to compare rates and viral loads found in both samples. HAdV was detected through real-time PCR. Total and fecal coliforms were detected by Colilert® kit, and viral infectivity of positive samples of the DNA genome was performed in A549 human cell line. All wetlands presented bacterial and viral contamination, but no viral particle was considered viable. The wetland that showed lower fecal coliform mean was Campo Bom, and São Leopoldo (both cities in Rio Grande do Sul) was representative of the highest mean. HAdV was detected in water samples (53%), gastropods' hemolymph (31%) and tissues (16%). Wetlands proved to be environments already altered by human action. Water samples exhibited a higher frequency of HAdV detection; however, in some instances, the target viral genomes were only found in gastropod biological samples. This was a pioneer study in the use of freshwater snails for human enteric viral assessment thus demonstrating that the human organism can retain fecal contamination, complementing and assisting in microbiological water analyzes.
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Affiliation(s)
- J S Gularte
- Laboratório de Microbiologia Molecular, Instituto de Ciências da Saúde, Universidade Feevale, Prédio Vermelho 2 Andar, Sala 205 RS 239, n 2755, Vila Nova, Novo Hamburgo, Rio Grande do Sul, CEP 93352-000, Brazil
| | - R Staggemeier
- Laboratório de Microbiologia Molecular, Instituto de Ciências da Saúde, Universidade Feevale, Prédio Vermelho 2 Andar, Sala 205 RS 239, n 2755, Vila Nova, Novo Hamburgo, Rio Grande do Sul, CEP 93352-000, Brazil
| | - M Demoliner
- Laboratório de Microbiologia Molecular, Instituto de Ciências da Saúde, Universidade Feevale, Prédio Vermelho 2 Andar, Sala 205 RS 239, n 2755, Vila Nova, Novo Hamburgo, Rio Grande do Sul, CEP 93352-000, Brazil
| | - T M S Heck
- Laboratório de Microbiologia Molecular, Instituto de Ciências da Saúde, Universidade Feevale, Prédio Vermelho 2 Andar, Sala 205 RS 239, n 2755, Vila Nova, Novo Hamburgo, Rio Grande do Sul, CEP 93352-000, Brazil
| | - F H Heldt
- Laboratório de Microbiologia Molecular, Instituto de Ciências da Saúde, Universidade Feevale, Prédio Vermelho 2 Andar, Sala 205 RS 239, n 2755, Vila Nova, Novo Hamburgo, Rio Grande do Sul, CEP 93352-000, Brazil
| | - R G F Ritzel
- Laboratório de Microbiologia Molecular, Instituto de Ciências da Saúde, Universidade Feevale, Prédio Vermelho 2 Andar, Sala 205 RS 239, n 2755, Vila Nova, Novo Hamburgo, Rio Grande do Sul, CEP 93352-000, Brazil
| | - C Rigotto
- Laboratório de Microbiologia Molecular, Instituto de Ciências da Saúde, Universidade Feevale, Prédio Vermelho 2 Andar, Sala 205 RS 239, n 2755, Vila Nova, Novo Hamburgo, Rio Grande do Sul, CEP 93352-000, Brazil
| | - A Henzel
- Laboratório de Microbiologia Molecular, Instituto de Ciências da Saúde, Universidade Feevale, Prédio Vermelho 2 Andar, Sala 205 RS 239, n 2755, Vila Nova, Novo Hamburgo, Rio Grande do Sul, CEP 93352-000, Brazil.
| | - F R Spilki
- Laboratório de Microbiologia Molecular, Instituto de Ciências da Saúde, Universidade Feevale, Prédio Vermelho 2 Andar, Sala 205 RS 239, n 2755, Vila Nova, Novo Hamburgo, Rio Grande do Sul, CEP 93352-000, Brazil
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Ganime AC, Carvalho-Costa FA, Santos M, Costa Filho R, Leite JPG, Miagostovich MP. Viability of human adenovirus from hospital fomites. J Med Virol 2014; 86:2065-9. [PMID: 25042068 DOI: 10.1002/jmv.23907] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/27/2014] [Indexed: 12/14/2022]
Abstract
The monitoring of environmental microbial contamination in healthcare facilities may be a valuable tool to determine pathogens transmission in those settings; however, such procedure is limited to bacterial indicators. Viruses are found commonly in those environments and are rarely used for these procedures. The aim of this study was to assess distribution and viability of a human DNA virus on fomites in an Adult Intensive Care Unit of a private hospital in Rio de Janeiro, Brazil. Human adenoviruses (HAdV) were investigated in 141 fomites by scraping the surface area and screening by quantitative PCR (qPCR) using TaqMan® System (Carlsbad, CA). Ten positive samples were selected for virus isolation in A549 and/or HEp2c cell lines. A total of 63 samples (44.7%) were positive and presented viral load ranging from 2.48 × 10(1) to 2.1 × 10(3) genomic copies per millilitre (gc/ml). The viability was demonstrated by integrated cell culture/nested-PCR in 5 out of 10 samples. Nucleotide sequencing confirmed all samples as HAdV and characterized one of them as specie B, serotype 3 (HAdV-3). The results indicate the risk of nosocomial transmission via contaminated fomites and point out the use of HAdV as biomarkers of environmental contamination.
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Affiliation(s)
- Ana Carolina Ganime
- Laboratory of Comparative and Environmental Virology, Oswaldo Cruz Institute, Oswaldo Cruz Foundation, Rio de Janeiro, Brazil
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14
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Miagostovich MP, Guimarães FR, Vieira CB, Fumian TM, da Gama NP, Victoria M, de Oliveira JM, Mendes ACDO, Gaspar AMC, Leite JPG. Assessment of water quality in a border region between the Atlantic forest and an urbanised area in Rio de Janeiro, Brazil. FOOD AND ENVIRONMENTAL VIROLOGY 2014; 6:110-115. [PMID: 24818567 DOI: 10.1007/s12560-014-9146-4] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/11/2014] [Accepted: 04/25/2014] [Indexed: 06/03/2023]
Abstract
The preservation of water resources is one of the goals of the designation of parks that act as natural reservoirs. In order to assess the impact of the presence of humans in an environmental preservation area bordering urban areas, the presence of four pathogenic enteric viruses [group A rotavirus (RV-A), norovirus (NoV), human adenoviruses (HAdV), and hepatitis A virus (HAV)], as well as the physico-chemical parameters, and Escherichia coli levels were assessed in riverine water samples. From June 2008 to May 2009, monthly monitoring was performed along the Engenho Novo River. RV-A, NoV, and HAdV were observed in 29% (31/108) of the water samples, with concentrations of up to 10(3) genome copies/liter. The natural occurrence of infectious HAdV was demonstrated by Integrated Cell Culture-PCR (ICC-PCR). This study confirms the suitability of using the detection of fecal-oral transmitted viruses as a marker of human fecal contamination in water matrices and indicates the spread of pathogenic viruses occurring in an alleged area of environmental protection.
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Affiliation(s)
- Marize Pereira Miagostovich
- Laboratory of Comparative and Environmental Virology, Oswaldo Cruz Institute, Oswaldo Cruz Foundation, 21040-360, Avenida Brasil, Rio de Janeiro, 4365, Brazil,
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Fongaro G, Nascimento MAD, Rigotto C, Ritterbusch G, da Silva ADA, Esteves PA, Barardi CRM. Evaluation and molecular characterization of human adenovirus in drinking water supplies: viral integrity and viability assays. Virol J 2013; 10:166. [PMID: 23714224 PMCID: PMC3686584 DOI: 10.1186/1743-422x-10-166] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2013] [Accepted: 05/24/2013] [Indexed: 11/10/2022] Open
Abstract
Background Human adenoviruses (HAdVs) are the second-leading cause of childhood gastroenteritis worldwide. This virus is commonly found in environmental waters and is very resistant to water disinfection and environmental stressors, especially UV light inactivation. Molecular techniques, such as PCR-based methods (Polymerase Chain Reaction), are commonly used to detect and identify viral contamination in water, although PCR alone does not allow the discrimination between infectious and non-infectious viral particles. A combination of cell culture and PCR has allowed detection of infectious viruses that grow slowly or fail to produce cytopathic effects (CPE) in cell culture. This study aimed to assess the integrity and viability of human adenovirus (HAdV) in environmental water and evaluate circulating strains by molecular characterization in three sites of the water supply in Florianópolis, Santa Catarina Island, Brazil: Peri Lagoon water, spring source water, and water from the public water supply system. Methods Water samples were collected, concentrated and HAdV quantified by real-time PCR. Viral integrity was evaluated by enzymatic assay (DNase I) and infectivity by plaque assay (PA) and integrated cell culture using transcribed mRNA (ICC-RT-qPCR). Samples containing particles of infectious HAdV were selected for sequencing and molecular characterization. Results The analyzed sites contained 83, 66 and 58% undamaged HAdV particles (defined as those in which the genetic material is protected by the viral capsid) at Peri Lagoon, spring source water and public supply system water, respectively. Of these, 66% of the particles (by PA) and 75% (by ICC-RT-qPCR) HAdV were shown to be infectious, due to being undamaged in Peri Lagoon, 33% (by PA) and 58% (by ICC-RT-qPCR) in spring source water and 8% (by PA) and 25% (by ICC-RT-qPCR) in the public water supply system. ICC-RT-qPCR, a very sensitive and rapid technique, was able to detect as low as 1 × 102 HAdV genome copies per milliliter of infectious viral particles in the environmental water samples. The molecular characterization studies indicated that HAdV-2 was the prevalent serotype. Conclusions These results indicate a lack of proper public health measures. We suggest that HAdV can be efficiently used as a marker of environmental and drinking water contamination and ICC-RT-qPCR demonstrated greater sensitivity and speed of detection of infectious viral particles compared to PA.
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Affiliation(s)
- Gislaine Fongaro
- Laboratório de Virologia Aplicada, Departamento de Microbiologia, Imunologia e Parasitologia, Universidade Federal de Santa Catarina, Florianópolis 88040-900, Brazil
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16
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Abstract
Viruses are common causes of foodborne outbreaks. Viral diseases have low fatality rates but transmission to humans via food is important due to the high probability of consuming fecally contaminated food or water because of poor food handling. Because of the low infectious doses of some foodborne viruses, there is a need for standardization and the development of new sensitive methods for detecting viruses. The focus is on molecular and non-molecular approaches, and emerging methods for the detection of foodborne viruses. The detection of noroviruses, hepatitis A and E viruses, rotaviruses and adenoviruses will be discussed. The chapter will conclude with insights into future research directions.
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de Abreu Corrêa A, Souza DSM, Moresco V, Kleemann CR, Garcia LAT, Barardi CRM. Stability of human enteric viruses in seawater samples from mollusc depuration tanks coupled with ultraviolet irradiation. J Appl Microbiol 2012; 113:1554-63. [PMID: 22967243 DOI: 10.1111/jam.12010] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2012] [Revised: 08/20/2012] [Accepted: 08/31/2012] [Indexed: 11/28/2022]
Abstract
AIMS To evaluate the stability in seawater of human adenovirus (HAdV2), murine norovirus (MNV-1) and hepatitis A virus (HAV) in a shellfish depuration system with and without ultraviolet (UV) treatment. METHODS AND RESULTS Seawater was seeded with viruses and disinfected using a 36 W lamp. Samples were collected at 24, 48, 72, 96 and 120 h; viruses were concentrated and the viral decay was evaluated using molecular and cell culture methods. Based on the molecular results, at 120 h of disinfection, there was a reduction of more than 3 log(10) for HAdV2 and HAV; MNV-1, a 4.5 log(10) reduction was observed at 72 h. Infectious MNV-1 was not detected after 72 h of treatment; while HAdV2 remained infectious. Seawater not treated demonstrated a progressive viral reduction for the three viruses tested. CONCLUSIONS The UV reduced the number of viral particles, and the results indicate there is natural and gradual decrease of viral load and viability in seawater. SIGNIFICANCE AND IMPACT OF THE STUDY UV irradiation is the method of choice for shellfish depuration in many countries; this work showed useful information about the viral stability in seawater and application of UV to water disinfection to be used in shellfish depuration tanks.
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Affiliation(s)
- A de Abreu Corrêa
- Laboratório de Virologia Aplicada, Departamento de Microbiologia, Imunologia e Parasitologia, Centro de Ciências Biológicas, UFSC, Florianópolis, Brazil.
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Corrêa ADA, Rigotto C, Moresco V, Kleemann CR, Teixeira AL, Poli CR, Simões CMO, Barardi CRM. The depuration dynamics of oysters (Crassostrea gigas) artificially contaminated with hepatitis A virus and human adenovirus. Mem Inst Oswaldo Cruz 2012; 107:11-7. [PMID: 22310530 DOI: 10.1590/s0074-02762012000100002] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2011] [Accepted: 07/14/2011] [Indexed: 11/21/2022] Open
Abstract
Within the country of Brazil, Santa Catarina is a major shellfish producer. Detection of viral contamination is an important step to ensure production quality and consumer safety during this process. In this study, we used a depuration system and ultraviolet (UV) disinfection to eliminate viral pathogens from artificially infected oysters and analysed the results. Specifically, the oysters were contaminated with hepatitis A virus (HAV) or human adenovirus type 5 (HAdV5). After viral infection, the oysters were placed into a depuration tank and harvested after 48, 72 and 96 h. After sampling, various oyster tissues were dissected and homogenised and the viruses were eluted with alkaline conditions and precipitated with polyethylene glycol. The oyster samples were evaluated by cell culture methods, as well as polymerase chain reaction (PCR) and quantitative-PCR. Moreover, at the end of the depuration period, the disinfected seawater was collected and analysed by PCR. The molecular assays showed that the HAdV5 genome was present in all of the depuration time samples, while the HAV genome was undetectable after 72 h of depuration. However, viral viability tests (integrated cell culture-PCR and immunofluorescence assay) indicated that both viruses were inactivated with 96 h of seawater recirculation. In conclusion, after 96 h of UV treatment, the depuration system studied in this work purified oysters that were artificially contaminated with HAdV5 and HAV.
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Affiliation(s)
- Adriana de Abreu Corrêa
- Laboratório de Virologia Aplicada, Universidade Federal de Santa Catarina, Florianópolis, SC, Brasil
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Comparative inactivation of murine norovirus, human adenovirus, and human JC polyomavirus by chlorine in seawater. Appl Environ Microbiol 2012; 78:6450-7. [PMID: 22773637 DOI: 10.1128/aem.01059-12] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
Abstract
Viruses excreted by humans affect the commercial and recreational use of coastal water. Shellfish produced in contaminated waters have been linked to many episodes and outbreaks of viral gastroenteritis, as well as other food-borne diseases worldwide. The risk can be reduced by appropriate treatment following harvesting and by depuration. The kinetics of inactivation of murine norovirus 1 and human adenovirus 2 in natural and artificial seawater by free available chlorine was studied by quantifying genomic copies (GC) using quantitative PCR and infectious viral particles (PFU). Human JC polyomavirus Mad4 kinetics were evaluated by quantitative PCR. DNase or RNase were used to eliminate free genomes and assess potential viral infectivity when molecular detection was performed. At 30 min of assay, human adenovirus 2 showed 2.6- and 2.7-log(10) GC reductions and a 2.3- and 2.4-log(10) PFU reductions in natural and artificial seawater, respectively, and infectious viral particles were still observed at the end of the assay. When DNase was used prior to the nucleic acid extraction the kinetic of inactivation obtained by quantitative PCR was statistically equivalent to the one observed by infectivity assays. For murine norovirus 1, 2.5, and 3.5-log(10) GC reductions were observed in natural and artificial seawater, respectively, while no viruses remained infectious after 30 min of contact with chlorine. Regarding JC polyomavirus Mad4, 1.5- and 1.1-log(10) GC reductions were observed after 30 min of contact time. No infectivity assays were conducted for this virus. The results obtained provide data that might be applicable to seawater used in shellfish depuration.
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Rigotto C, Victoria M, Moresco V, Kolesnikovas C, Corrêa A, Souza D, Miagostovich M, Simões C, Barardi C. Assessment of adenovirus, hepatitis A virus and rotavirus presence in environmental samples in Florianopolis, South Brazil. J Appl Microbiol 2010; 109:1979-87. [DOI: 10.1111/j.1365-2672.2010.04827.x] [Citation(s) in RCA: 107] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Calgua B, Barardi CRM, Bofill-Mas S, Rodriguez-Manzano J, Girones R. Detection and quantitation of infectious human adenoviruses and JC polyomaviruses in water by immunofluorescence assay. J Virol Methods 2010; 171:1-7. [PMID: 20863853 DOI: 10.1016/j.jviromet.2010.09.013] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2010] [Revised: 09/03/2010] [Accepted: 09/13/2010] [Indexed: 11/27/2022]
Abstract
Human adenoviruses (HAdV) and JC polyomaviruses (JCPyV) have been proposed as markers of fecal/urine contamination of human origin. An indirect immunofluorescence assay has been developed to quantify infectious human adenoviruses types 2 and 41 and JC polyomaviruses strain Mad-4 in water samples. The immunofluorescence assay was compared with other quantitative techniques used commonly such as plaque assay, tissue culture infectious dose-50 and quantitative PCR (qPCR). The immunofluorescence assays showed to be specific for the detection of infectious viruses, obtaining negative results when UV or heat-inactivated viruses were analyzed. The assays required less time and showed higher sensitivity for the detection of infectious viral particles than other cell culture techniques (1 log(10) more) evaluated. River water samples spiked previously with human adenoviruses and raw sewage samples were also analyzed using the proposed immunofluorescence assay as well as by qPCR. The results show quantitations with 2 log(10) reduction in the numbers of infectious viruses compared with the number of genome copies detected by qPCR. The immunofluorescence assay developed is fast, sensitive, specific, and a standardizable technique for the quantitation and detection of infectious viruses in water samples.
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Affiliation(s)
- Byron Calgua
- Department of Microbiology, Faculty of Biology, University of Barcelona, Barcelona, Spain
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Dong Y, Kim J, Lewis G. Evaluation of methodology for detection of human adenoviruses in wastewater, drinking water, stream water and recreational waters. J Appl Microbiol 2010; 108:800-809. [DOI: 10.1111/j.1365-2672.2009.04477.x] [Citation(s) in RCA: 52] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Y. Dong
- School of Biological Sciences, University of Auckland, Auckland, New Zealand
| | - J. Kim
- School of Biological Sciences, University of Auckland, Auckland, New Zealand
| | - G.D. Lewis
- School of Biological Sciences, University of Auckland, Auckland, New Zealand
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Lambertini E, Spencer SK, Bertz PD, Loge FJ, Borchardt MA. New mathematical approaches to quantify human infectious viruses from environmental media using integrated cell culture-qPCR. J Virol Methods 2009; 163:244-52. [PMID: 19835913 DOI: 10.1016/j.jviromet.2009.10.002] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2009] [Revised: 09/28/2009] [Accepted: 10/06/2009] [Indexed: 10/20/2022]
Abstract
Quantifying infectious viruses by cell culture depends on visualizing cytopathic effect, or for integrated cell culture-PCR, attaining confidence a PCR-positive signal is the result of virus growth and not inoculum carryover. This study developed mathematical methods to calculate infectious virus numbers based on viral growth kinetics in cell culture. Poliovirus was inoculated into BGM cell monolayers at 10 concentrations from 0.001 to 1000 PFU/ml. Copy numbers of negative-strand RNA, a marker of infectivity for single-stranded positive RNA viruses, were measured over time by qRT-PCR. Growth data were analyzed by two approaches. First, data were fit with a continuous function to estimate directly the initial virus number, expressed as genomic copies. Such estimates correlated with actual inoculum numbers across all concentrations (R(2)=0.62, n=17). Second, the length of lag phase appeared to vary inversely with inoculum titers; hence, standard curves to predict inoculum virus numbers were derived based on three definitions of lag time: (1) time of first detection of (-)RNA, (2) second derivative maximum of the fitted continuous function, and (3) time when the fitted curve crossed a threshold (-)RNA concentration. All three proxies yielded standard curves with R(2)=0.69-0.90 (n=17). The primary advantage of these growth kinetics approaches is being able to quantify virions that are unambiguously infectious, a particular advantage for viruses that do not produce CPE.
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Affiliation(s)
- E Lambertini
- Department of Civil and Environmental Engineering, University of California-Davis, 1 Shields Avenue, Davis, CA 95616, United States.
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Abstract
Accurate indicators of fecal pollution are needed in order to minimize public health risks associated with wastewater contamination in recreational waters. However, the bacterial indicators currently used for monitoring water quality do not correlate with the presence of pathogens. Here we demonstrate that the plant pathogen Pepper mild mottle virus (PMMoV) is widespread and abundant in wastewater from the United States, suggesting the utility of this virus as an indicator of human fecal pollution. Quantitative PCR was used to determine the abundance of PMMoV in raw sewage, treated wastewater, seawater exposed to wastewater, and fecal samples and/or intestinal homogenates from a wide variety of animals. PMMoV was present in all wastewater samples at concentrations greater than 1 million copies per milliliter of raw sewage. Despite the ubiquity of PMMoV in human feces, this virus was not detected in the majority of animal fecal samples tested, with the exception of chicken and seagull samples. PMMoV was detected in four out of six seawater samples collected near point sources of secondary treated wastewater off southeastern Florida, where it co-occurred with several other pathogens and indicators of fecal pollution. Since PMMoV was not found in nonpolluted seawater samples and could be detected in surface seawater for approximately 1 week after its initial introduction, the presence of PMMoV in the marine environment reflects a recent contamination event. Together, these data demonstrate that PMMoV is a promising new indicator of fecal pollution in coastal environments.
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Abstract
Human fecal matter contains a large number of viruses, and current bacterial indicators used for monitoring water quality do not correlate with the presence of pathogenic viruses. Adenoviruses and enteroviruses have often been used to identify fecal pollution in the environment; however, other viruses shed in fecal matter may more accurately detect fecal pollution. The purpose of this study was to develop a baseline understanding of the types of viruses found in raw sewage. PCR was used to detect adenoviruses, enteroviruses, hepatitis B viruses, herpesviruses, morbilliviruses, noroviruses, papillomaviruses, picobirnaviruses, reoviruses, and rotaviruses in raw sewage collected throughout the United States. Adenoviruses and picobirnaviruses were detected in 100% of raw sewage samples and 25% and 33% of final effluent samples, respectively. Enteroviruses and noroviruses were detected in 75% and 58% of raw sewage samples, respectively, and both viral groups were found in 8% of final effluent samples. This study showed that adenoviruses, enteroviruses, noroviruses, and picobirnaviruses are widespread in raw sewage. Since adenoviruses and picobirnaviruses were detected in 100% of raw sewage samples, they are potential markers of fecal contamination. Additionally, this research uncovered previously unknown sequence diversity in human picobirnaviruses. This baseline understanding of viruses in raw sewage will enable educated decisions to be made regarding the use of different viruses in water quality assessments.
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Xagoraraki I, Kuo DHW, Wong K, Wong M, Rose JB. Occurrence of human adenoviruses at two recreational beaches of the great lakes. Appl Environ Microbiol 2007; 73:7874-81. [PMID: 17933924 PMCID: PMC2168141 DOI: 10.1128/aem.01239-07] [Citation(s) in RCA: 95] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2007] [Accepted: 10/02/2007] [Indexed: 11/20/2022] Open
Abstract
Human adenoviruses (HAdVs) have been related to several waterborne diseases such as acute gastroenteritis, conjunctivitis, and respiratory illness, and it has been shown that an important human exposure pathway is through recreational waters. However, HAdV occurrence at recreational freshwater beaches has not been previously investigated. In this study, a total of 58 water samples were collected from two recreational beaches on Lake Michigan (i.e., Silver Beach and Washington Park Beach) during the summer of 2004. Occurrences of HAdVs in these lake samples were determined using two hexon-based real-time PCR assays (one for monitoring all 51 serotypes of HAdVs and another for specifically detecting F species HAdVs, i.e., serotypes 40 and 41) and compared to an integrated cell culture (ICC) PCR method. The real-time PCR results showed that 8 of 30 Silver Beach samples and 6 of 28 Washington Park Beach samples contained HAdVs, and F species HAdVs were detected in three of these positive samples. The concentrations of HAdVs ranged from (1.7 +/- 0.7) x 10(1) to (3.4 +/- 0.8) x 10(2) and from (7 +/- 2) x 10(0) to (3.8 +/- 0.3) x 10(3) virus particles/liter for Silver Beach and Washington Park Beach, respectively. F species HAdVs were detected at levels ranging from (4.8 +/- 0.8) x 10(1) to (4.6 +/- 1.5) x 10(2) virus particles/liter. Approximately 60% of the ICC-PCR analyses agreed with the real-time PCR results. This study revealed the occurrence of HAdVs at Lake Michigan recreational beaches. Given the potential health risks, further assessment regarding sources, virus transport, and survival is needed to improve the safety of the region.
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Affiliation(s)
- Irene Xagoraraki
- Department of Civil and Environmental Engineering, Michigan State University, A136 Engineering Research Complex, East Lansing, MI 48824, USA.
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de Abreu Corrêa A, Albarnaz JD, Moresco V, Poli CR, Teixeira AL, Oliveira Simões CM, Monte Barardi CR. Depuration dynamics of oysters (Crassostrea gigas) artificially contaminated by Salmonella enterica serovar Typhimurium. MARINE ENVIRONMENTAL RESEARCH 2007; 63:479-89. [PMID: 17280712 DOI: 10.1016/j.marenvres.2006.12.002] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/21/2006] [Revised: 12/10/2006] [Accepted: 12/10/2006] [Indexed: 05/13/2023]
Abstract
The State of Santa Catarina produces the greatest quantity of edible mollusks in Brazil. To guarantee sanitary qualify, mollusk cultures should be monitored for contamination by pathogenic microorganisms. A self-purification or "depuration" system that eliminates Salmonella enterica serovar Typhimurium contamination from oysters has been developed and evaluated. The depuration process occurred within a closed system, in which 1000 L of water was recirculated for 24 h. The water was sterilized with ultraviolet (UV) light, chlorine, or both together. Oysters (Crassostrea gigas) artificially contaminated with S. typhimurium were harvested every 6 h. Samples of oyster tissue were excised and both the presence and numbers of bacteria were determined. Combined UV light and chlorine treatments resulted in total elimination of bacteria within 12 h. Polymerase chain reaction detected bacteria in water exposed to the three treatments. This pioneering study is the first of its kind in Brazil and represents a major contribution to commercial mollusk culture in this country.
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Affiliation(s)
- Adriana de Abreu Corrêa
- Laboratório de Virologia Aplicada, Departamento de Microbiologia e Parasitologia, CCB, Campus Universitario Trindade, 88040-900 Florianópolis-SC, Brazil
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Yates MV, Malley J, Rochelle P, Hoffman R. Effect of adenovirus resistance on UV disinfection requirements: A report on the state of adenovirus science. ACTA ACUST UNITED AC 2006. [DOI: 10.1002/j.1551-8833.2006.tb07686.x] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Sincero TCM, Levin DB, Simões CMO, Barardi CRM. Detection of hepatitis A virus (HAV) in oysters (Crassostrea gigas). WATER RESEARCH 2006; 40:895-902. [PMID: 16457870 DOI: 10.1016/j.watres.2005.12.005] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/12/2005] [Revised: 12/02/2005] [Accepted: 12/06/2005] [Indexed: 05/06/2023]
Abstract
Because shellfish (oysters, clams, and mussels) are filter-feeders, pathogens become concentrated within them, and human consumption of raw, or under-cooked shellfish can result in disease outbreaks. Identification of hepatitis A virus (HAV) in shellfish has been difficult for several reasons: the concentration of virions in shellfish tissues are very low, detection methods based on in vitro propagation are unreliable, recovery of virions from shellfish tissues is inefficient, and PCR inhibitors in shellfish tissues limit the success of RT-PCR. These facts underlie difficulties in determining cause and effect relationships between hepatitis A outbreaks and detection of HAV contamination in shellfish samples. We have developed a reliable and highly sensitive method for detection of HAV in oyster tissues at low levels (0.001 FFU/ml-fluorescent focus units per milliliter). Our method combines dissection of the gastrointestinal oyster tract, organic extraction before PEG precipitation, and RNA extraction with Trizol LS, followed by RT-PCR and hybridization using a digoxigenin-labeled HAV cDNA probe. Our results will benefit both public health officials concerned about hepatitis A infections caused by consumption of HAV-contaminated oysters and shellfish producers who require reliable methods for quality control of commercial oyster production.
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Affiliation(s)
- T C M Sincero
- Laboratório de Virologia Aplicada, Centro de Ciências Biológicas, Universidade Federal de Santa Catarina, CEP 88040-900, Florianópolis, Santa Catarina, Brazil
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