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Ma B, Seyedi S, Wells E, McCarthy D, Crosbie N, Linden KG. Inactivation of biofilm-bound bacterial cells using irradiation across UVC wavelengths. Water Res 2022; 217:118379. [PMID: 35429876 DOI: 10.1016/j.watres.2022.118379] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/18/2021] [Revised: 02/17/2022] [Accepted: 03/28/2022] [Indexed: 06/14/2023]
Abstract
Opportunistic pathogens (OPs), such as Pseudomonas spp., Legionella spp., and mycobacteria, have been detected in biofilms in drinking water distribution systems and water storage tanks and pose potential risks to finished drinking water quality and safety. Emerging UV technologies, such as UV light emitting diodes (LEDs) and krypton chloride (KrCl*) excimers, could provide an alternative to chemical-based secondary disinfection (i.e., chlorine or chloramines) for controlling biofilm-bound OPs. UV systems offer long lifetimes, ability to select wavelength, small size with high power density, and limited-to-no disinfection by-product formation. In this study, inactivation of biofilm-bound Pseudomonas aeruginosa cells across different maturities was investigated using five UVC devices with different peak emission wavelengths, including a KrCl* excimer (222 nm), a low pressure mercury vapor lamp (254 nm), and three UV LEDs (260 nm, 270 nm, and 282 nm). The UV transmittance and absorbance through the biofilm structure was also documented for the first time using a unique approach. Our results show all UVC devices can inactivate biofilm-bound P. aeruginosa cells up to a point, among which the UV LED with peak emission at 270 nm provided the best disinfection performance. UV sensitivities of biofilm-bound cells decreased with biofilm maturity and while initial rates of inactivation were high, no more than 1.5-2.5 log reduction was possible. Re-suspended biofilm bacteria in aqueous solution were highly sensitive to UV, reaching greater than 6 log reduction. UV shielding by biofilm constituents was observed and was likely one of the reasons for UV resistance but did not fully explain the difference in UV sensitivity between biofilm-bound cells versus planktonic cells. This study improves upon fundamental knowledge and provides guidance for innovative designs using emerging UV technologies for biofilm and pathogen control in water distribution systems.
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Affiliation(s)
- Ben Ma
- Department of Civil, Environmental, and Architectural Engineering, University of Colorado Boulder, 4001 Discovery Dr., Boulder, CO, 80303, United States
| | - Saba Seyedi
- Department of Civil, Environmental, and Architectural Engineering, University of Colorado Boulder, 4001 Discovery Dr., Boulder, CO, 80303, United States
| | - Emma Wells
- Department of Civil, Environmental, and Architectural Engineering, University of Colorado Boulder, 4001 Discovery Dr., Boulder, CO, 80303, United States
| | - David McCarthy
- Department of Civil Engineering, Monash University, Clayton, Vic, 3800, Australia
| | | | - Karl G Linden
- Department of Civil, Environmental, and Architectural Engineering, University of Colorado Boulder, 4001 Discovery Dr., Boulder, CO, 80303, United States.
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2
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Villa D, Jiang A, Crosbie N, Rule S, McCulloch R, Visco C, Buege MJ, Kumar A, Bond D, Paludo J, Maurer MJ, Thanarajasingam G, Baech J, El‐Galaly T, Kugathasan L, Gerrie AS, Lewis D. TIME TO SECOND LINE BRUTON TYROSINE KINASE THERAPY AND AGE AT ITS INITIATION ARE STRONGLY ASSOCIATED WITH SUBSEQUENT OVERALL SURVIVAL IN PATIENTS WITH FIRST RELAPSE OF MANTLE CELL LYMPHOMA. Hematol Oncol 2021. [DOI: 10.1002/hon.59_2880] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- D. Villa
- BC Cancer, Centre for Lymphoid Cancer Vancouver Canada
| | - A. Jiang
- BC Cancer, Centre for Lymphoid Cancer Vancouver Canada
| | - N. Crosbie
- University Hospitals Plymouth NHS Trust Haematology Plymouth UK
| | - S. Rule
- University Hospitals Plymouth NHS Trust Haematology Plymouth UK
| | - R. McCulloch
- University Hospitals Plymouth NHS Trust Haematology Plymouth UK
| | - C. Visco
- University of Verona Hematology Verona Italy
| | - M. J. Buege
- Memorial Sloan Kettering Cancer Center Clinical Pharmacy, Lymphoma New York USA
| | - A. Kumar
- Memorial Sloan Kettering Cancer Center Division of Hematologic Malignancies New York USA
| | - D. Bond
- The Ohio State University Hematology Columbus USA
| | - J. Paludo
- Mayo Clinic Hematology Rochester USA
| | - M. J. Maurer
- Mayo Clinic Division of Clinical Trials and Biostatistics Rochester USA
| | | | - J. Baech
- Aalborg University Hospital Haematology Aalborg Denmark
| | - T. El‐Galaly
- Aalborg University Hospital Haematology Aalborg Denmark
| | - L. Kugathasan
- BC Cancer, Centre for Lymphoid Cancer Vancouver Canada
| | - A. S. Gerrie
- BC Cancer, Centre for Lymphoid Cancer Vancouver Canada
| | - D. Lewis
- University Hospitals Plymouth NHS Trust Haematology Plymouth UK
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3
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Ferreri AJM, Steffanoni S, Calimeri T, Laurenge A, Fox CP, Soussain C, Grommes C, Sassone MC, Touat M, Boot J, Crosbie N, Chaganti S, Dietrich J, Alencar A, Itchaki G, Hoang Xuan K, Batchelor T, Cwynarski K. SARS‐COV‐2 INFECTION IN 50 PATIENTS WITH PRIMARY CNS LYMPHOMA: PRESENTATION, EFFECTS ON TUMOR TREATMENT AND OUTCOME IN A SERIES OF THE INTERNATIONAL PCNSL COLLABORATIVE GROUP. Hematol Oncol 2021. [DOI: 10.1002/hon.68_2880] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
| | - S. Steffanoni
- IRCCS San Raffaele Lymphoma Unit Hematology Milan Italy
| | - T. Calimeri
- IRCCS San Raffaele Lymphoma Unit Hematology Milan Italy
| | - A. Laurenge
- Hôpitaux Universitaires La Pitié Salpêtrière Service de Neurologie 2‐Mazarin Paris France
| | - C. P. Fox
- University Hospitals NHS Trust hematology Nottingham UK
| | - C. Soussain
- Hôpital René Huguenin‐Institut Curie Saint‐Cloud Hematology Paris France
| | - C. Grommes
- Memorial Sloan Kettering Cancer Center Department of Neurology New York USA
| | - M. C. Sassone
- IRCCS San Raffaele Lymphoma Unit Hematology Milan Italy
| | - M. Touat
- Hôpitaux Universitaires La Pitié Salpêtrière Service de Neurologie 2‐Mazarin Paris France
| | - J. Boot
- Barking Havering and Redbridge University Hospitals NHS Trust Hematology London UK
| | - N. Crosbie
- Derriford Hospital Hematology Plymouth UK
| | - S. Chaganti
- Queen Elizabeth Hospital Haematology Birmingham UK
| | - J. Dietrich
- Massachusetts General Hospital Cancer Center Neuro‐Oncology Boston USA
| | - A. Alencar
- University of Miami/Sylvester Comprehensive Cancer Center Department of Hematology and Oncology Miami USA
| | - G. Itchaki
- Davidoff Cancer Center Rabin Medical Center Hematology Petah‐Tikva Israel
| | - K. Hoang Xuan
- Hôpitaux Universitaires La Pitié Salpêtrière Service de Neurologie 2‐Mazarin Paris France
| | - T. Batchelor
- Brigham and Women’s Hospital Neurology, Boston, Massachusetts USA 13 University College London Hospital Haematology London UK
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4
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Sivaram AK, Logeshwaran P, Surapaneni A, Shah K, Crosbie N, Rogers Z, Lee E, Venkatraman K, Kannan K, Naidu R, Megharaj M. Evaluation of Cyto-genotoxicity of Perfluorooctane Sulfonate (PFOS) to Allium cepa. Environ Toxicol Chem 2021; 40:792-798. [PMID: 33074584 DOI: 10.1002/etc.4905] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/09/2020] [Revised: 09/08/2020] [Accepted: 10/13/2020] [Indexed: 06/11/2023]
Abstract
Per- and polyfluoroalkyl substances (PFAS) have emerged as contaminants of global concern. Among several PFAS, perfluorooctanoic acid (PFOA) and perfluorooctane sulfonate (PFOS) are persistent and bioaccumulative compounds. We investigated the cyto-genotoxic potential of PFOS to Allium cepa root meristem cells. The A. cepa root tips were exposed to 6 different concentrations (1-100 mg L-1 ) of PFOS for 48 h. Reduction in mitotic index and chromosomal aberrations was measured as genotoxic endpoints in meristematic root cells. Exposure to PFOS significantly affected cell division by reducing the miotic index at higher concentrations (>10 mg L-1 ). The median effect concentration of PFOS to elicit cytotoxicity based on the mitotic index was 43.2 mg L-1 . Exposure to PFOS significantly increased chromosomal aberrations at concentrations >25 mg L-1 . The common aberrations were micronuclei, vagrant cells, and multipolar anaphase. The alkaline comet assay revealed a genotoxic potential of PFOS with increased tail DNA percentage at concentrations >25 mg L-1 . To our knowledge, this is the first study to report the cyto-genotoxic potential of PFOS in higher plants. Environ Toxicol Chem 2021;40:792-798. © 2020 SETAC.
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Affiliation(s)
- Anithadevi Kenday Sivaram
- Global Centre for Environmental Remediation, The University of Newcastle, Callaghan New South Wales, Australia
| | - Panneerselvan Logeshwaran
- Global Centre for Environmental Remediation, The University of Newcastle, Callaghan New South Wales, Australia
- Cooperative Research Centre for Contamination Assessment and Remediation of the Environments, The University of Newcastle, Callaghan, New South Wales, Australia
| | | | - Kalpit Shah
- Chemical & Environmental Engineering Department, School of Engineering, RMIT University, Melbourne, Victoria, Australia
| | | | - Zoe Rogers
- Hunter Water, Newcastle, New South Wales, Australia
| | - Elliot Lee
- Water Corporation, Leederville, Western Australia, Australia
| | | | - Kurunthachalam Kannan
- Department of Pediatrics, New York University School of Medicine, New York, New York, USA
| | - Ravi Naidu
- Global Centre for Environmental Remediation, The University of Newcastle, Callaghan New South Wales, Australia
- Cooperative Research Centre for Contamination Assessment and Remediation of the Environments, The University of Newcastle, Callaghan, New South Wales, Australia
| | - Mallavarapu Megharaj
- Global Centre for Environmental Remediation, The University of Newcastle, Callaghan New South Wales, Australia
- Cooperative Research Centre for Contamination Assessment and Remediation of the Environments, The University of Newcastle, Callaghan, New South Wales, Australia
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5
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Donner E, Zamyadi A, Jex A, Short M, Drigo B, McCarthy D, Crosbie N, Ahmed W, Mueller J, Thomas K, Monis P, Keegan A, Ginige M, Hugenholtz P, Tyson G, Hill K, Blackall L. Wastewater monitoring for SARS-CoV-2. Microbiol Aust 2021. [DOI: 10.1071/ma21006] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Wastewater monitoring (WM) of SARS-CoV-2 from sewers was applied throughout the world early in the COVID-19 pandemic. Sharing of protocols and experiences in WM of SARS-CoV-2 by national and international researchers and practitioners has been vital to ensuring the sensitivity and specificity of the methods. WM has been a valuable adjunct to human clinical testing, and when positive results occur in sewage, community testing has been increased. WM findings allow public health officials to track and respond to the impacts of loosening lockdown restrictions, demonstrating when return to normal social activities might occur without a resurgence of rapid community transmission, and they are particularly useful in areas with low human case numbers and/or low clinical testing rates. New research is required to address several practical knowledge gaps, for example, sampling protocols, prediction of case prevalence from viral numbers by modelling, and determination of detection limits. Communication to the Australian public of WM of SARS-CoV-2 has been via interactive, visual dashboards. Once SARS-CoV-2 vaccinations are introduced, WM could help track the underlying circulation of the virus in the population, the spread of known variants and its future evolution.
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Korfi K, Araf S, Bewicke-Copley F, Kumar E, Cummin T, Ashton-Key M, Barrans S, Van Hoppe S, Burton C, Elshiekh M, Rule S, Crosbie N, Clear A, Calaminici M, Menon G, Sha C, Bentley M, Nagano A, Davies A, Painter D, Smith A, Okosun J, Gribben J, Naresh K, Westhead D, Wang J, Johnson P, Fitzgibbon J. LONGITUDINAL ANALYSES OF DIAGNOSTIC-RELAPSE BIOPSIES OF DIFFUSE LARGE B CELL LYMPHOMA SUGGEST THAT RELAPSE IS MEDIATED BY DISTINCT MECHANISMS IN ABC AND GCB LYMPHOMA. Hematol Oncol 2019. [DOI: 10.1002/hon.100_2629] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- K. Korfi
- Centre for Haemato-Oncology; Barts Cancer Institute; London United Kingdom
| | - S. Araf
- Centre for Haemato-Oncology; Barts Cancer Institute; London United Kingdom
| | - F. Bewicke-Copley
- Centre for Molecular Oncology; Barts Cancer Institute; London United Kingdom
| | - E. Kumar
- Centre for Haemato-Oncology; Barts Cancer Institute; London United Kingdom
| | - T. Cummin
- Cancer Research UK Centre; University of Southampton; Southampton United Kingdom
| | - M. Ashton-Key
- Cellular Pathology; University Hospital Southampton NHS Foundation Trust; Southampton United Kingdom
| | - S. Barrans
- HMDS; Leeds Teaching Hospitals NHS Trust; Leeds United Kingdom
| | - S. Van Hoppe
- HMDS; Leeds Teaching Hospitals NHS Trust; Leeds United Kingdom
| | - C. Burton
- HMDS; Leeds Teaching Hospitals NHS Trust; Leeds United Kingdom
| | - M. Elshiekh
- Cellular & Molecular Pathology; Imperial College NHS Trust & Imperial College London; London United Kingdom
| | - S. Rule
- Department of Haematology; Derriford Hospital, University of Plymouth; Plymouth United Kingdom
| | - N. Crosbie
- Department of Haematology; University Hospitals Plymouth NHS Trust; Plymouth United Kingdom
| | - A. Clear
- Centre for Haemato-Oncology; Barts Cancer Institute; London United Kingdom
| | - M. Calaminici
- Centre for Haemato-Oncology; Barts Cancer Institute; London United Kingdom
| | - G. Menon
- Haemato-Oncology Diagnostic Service; Liverpool Clinical Laboratories; Liverpool United Kingdom
| | - C. Sha
- School of Molecular and Cellular Biology; University of Leeds; Leeds United Kingdom
| | - M. Bentley
- School of Molecular and Cellular Biology; University of Leeds; Leeds United Kingdom
| | - A. Nagano
- Centre for Molecular Oncology; Barts Cancer Institute; London United Kingdom
| | - A. Davies
- Cancer Research UK Centre; University of Southampton; Southampton United Kingdom
| | - D. Painter
- Epidemiology and Cancer Statistics Group; University of York; York United Kingdom
| | - A. Smith
- Epidemiology and Cancer Statistics Group; University of York; York United Kingdom
| | - J. Okosun
- Centre for Haemato-Oncology; Barts Cancer Institute; London United Kingdom
| | - J. Gribben
- Centre for Haemato-Oncology; Barts Cancer Institute; London United Kingdom
| | - K.N. Naresh
- Cellular & Molecular Pathology; Imperial College NHS Trust & Imperial College London; London United Kingdom
| | - D. Westhead
- School of Molecular and Cellular Biology; University of Leeds; Leeds United Kingdom
| | - J. Wang
- Centre for Molecular Oncology; Barts Cancer Institute; London United Kingdom
| | - P. Johnson
- Cancer Research UK Centre; University of Southampton; Southampton United Kingdom
| | - J. Fitzgibbon
- Centre for Haemato-Oncology; Barts Cancer Institute; London United Kingdom
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7
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Lee JA, Spidlen J, Boyce K, Cai J, Crosbie N, Dalphin M, Furlong J, Gasparetto M, Goldberg M, Goralczyk EM, Hyun B, Jansen K, Kollmann T, Kong M, Leif R, McWeeney S, Moloshok TD, Moore W, Nolan G, Nolan J, Nikolich-Zugich J, Parrish D, Purcell B, Qian Y, Selvaraj B, Smith C, Tchuvatkina O, Wertheimer A, Wilkinson P, Wilson C, Wood J, Zigon R, Scheuermann RH, Brinkman RR. MIFlowCyt: the minimum information about a Flow Cytometry Experiment. Cytometry A 2008; 73:926-30. [PMID: 18752282 DOI: 10.1002/cyto.a.20623] [Citation(s) in RCA: 326] [Impact Index Per Article: 20.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
A fundamental tenet of scientific research is that published results are open to independent validation and refutation. Minimum data standards aid data providers, users, and publishers by providing a specification of what is required to unambiguously interpret experimental findings. Here, we present the Minimum Information about a Flow Cytometry Experiment (MIFlowCyt) standard, stating the minimum information required to report flow cytometry (FCM) experiments. We brought together a cross-disciplinary international collaborative group of bioinformaticians, computational statisticians, software developers, instrument manufacturers, and clinical and basic research scientists to develop the standard. The standard was subsequently vetted by the International Society for Advancement of Cytometry (ISAC) Data Standards Task Force, Standards Committee, membership, and Council. The MIFlowCyt standard includes recommendations about descriptions of the specimens and reagents included in the FCM experiment, the configuration of the instrument used to perform the assays, and the data processing approaches used to interpret the primary output data. MIFlowCyt has been adopted as a standard by ISAC, representing the FCM scientific community including scientists as well as software and hardware manufacturers. Adoptionof MIFlowCyt by the scientific and publishing communities will facilitate third-party understanding and reuse of FCM data.
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Affiliation(s)
- Jamie A Lee
- Department of Pathology, University of Texas Southwestern Medical Center, Dallas, Texas 75390, USA
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