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Raison H, Parsley H, Hall-Scullen E, Dailey Y, Cronin M. IDEA tool: Establishing a prioritisation matrix for oral health improvement interventions. Community Dent Health 2024. [PMID: 38682576 DOI: 10.1922/cdh_00248dphraison] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 11/06/2023] [Accepted: 02/21/2024] [Indexed: 05/01/2024]
Abstract
Initial impetus for action: Oral health is not equitably distributed. More deprived areas experience appreciably worse oral health outcomes. Oral health improvement programmes in Local Authorities (LA) seek to reduce these inequalities but have diminished in recent years following the COVID-19 pandemic. LAs have also endured funding cuts to public health budgets, placing a greater emphasis on the need for establishing a clear prioritisation matrix for oral health improvement interventions. Solution: A prioritisation matrix that considered both the importance and do-ability of oral health improvement interventions was developed. Both are composite measures. The importance comprised evidence of benefit, impact on inequalities, alignment with national/local priorities and cost-effectiveness of the intervention. The do-ability considered the available support from stakeholders, building/equipment requirements, workforce issues and investment funding. A working group was necessary to inform the do-ability aspect of the prioritisation matrix. Scores were assigned to each criterion, the sum of the scores informed whether the intervention was eliminated, aspirational or implemented based on predetermined thresholds. Outcome: The prioritisation matrix ensured a transparent and systematic approach for intervention selection, which reflected local resources and priorities. Moreover, this tool should help ensure the most effective, equitable, practical and sustainable interventions are chosen having the greatest impact on improving oral health outcomes.
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Affiliation(s)
- H Raison
- Institute of Population Health, University of Liverpool, UK
| | - H Parsley
- Healthcare Public Health Directorate, NHS England North West, UK
| | - E Hall-Scullen
- Healthcare Public Health Directorate, NHS England North West, UK
| | - Y Dailey
- Healthcare Public Health Directorate, NHS England North West, UK
| | - M Cronin
- Public Health, Knowsley Local Authority, UK
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Alanezi ST, Almutairi WM, Cronin M, Gobbo O, O'Mara SM, Sheppard D, O'Connor WT, Gilchrist MD, Kleefeld C, Colgan N. Whole-brain traumatic controlled cortical impact to the left frontal lobe: Magnetic resonance image-based texture analysis. J Neuropathol Exp Neurol 2024; 83:94-106. [PMID: 38164986 DOI: 10.1093/jnen/nlad110] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2024] Open
Abstract
This research assesses the capability of texture analysis (TA) derived from high-resolution (HR) T2-weighted magnetic resonance imaging to identify primary sequelae following 1-5 hours of controlled cortical impact mild or severe traumatic brain injury (TBI) to the left frontal cortex (focal impact) and secondary (diffuse) sequelae in the right frontal cortex, bilateral corpus callosum, and hippocampus in rats. The TA technique comprised first-order (histogram-based) and second-order statistics (including gray-level co-occurrence matrix, gray-level run length matrix, and neighborhood gray-level difference matrix). Edema in the left frontal impact region developed within 1 hour and continued throughout the 5-hour assessments. The TA features from HR images confirmed the focal injury. There was no significant difference among radiomics features between the left and right corpus callosum or hippocampus from 1 to 5 hours following a mild or severe impact. The adjacent corpus callosum region and the distal hippocampus region (s), showed no diffuse injury 1-5 hours after mild or severe TBI. These results suggest that combining HR images with TA may enhance detection of early primary and secondary sequelae following TBI.
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Affiliation(s)
- Saleh T Alanezi
- Physics Department, Faculty of Science, Northern Border University, ArAr, Saudi Arabia
- School of Natural Sciences, College of Science and Engineering, University of Galway, Galway, Ireland
| | - Waleed M Almutairi
- Medical Imaging Department, King Abdullah bin Abdulaziz University Hospital, Riyadh, Saudi Arabia
- Department of Physics, College of Science, Princess Nourah Bint Abdulrahman University, Riyadh, Saudi Arabia
| | - Michelle Cronin
- Conway Institute, University College Dublin, Belfield, Dublin, Ireland
| | - Oliviero Gobbo
- School of Pharmacy and Pharmaceutical Sciences & Institute of Neuroscience, Trinity College, Dublin, Ireland
| | - Shane M O'Mara
- Institute of Neuroscience, Trinity College, Dublin, Ireland
| | - Declan Sheppard
- Department of Radiology, University Hospital Galway, Galway, Ireland
| | - William T O'Connor
- University of Limerick School of Medicine, Castletroy, Limerick, Ireland
| | - Michael D Gilchrist
- School of Mechanical & Materials Engineering, University College Dublin, Belfield, Dublin, Ireland
| | - Christoph Kleefeld
- School of Natural Sciences, College of Science and Engineering, University of Galway, Galway, Ireland
| | - Niall Colgan
- School of Natural Sciences, College of Science and Engineering, University of Galway, Galway, Ireland
- Department of Engineering, Technological University of the Shannon, Athlone, Ireland
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3
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Pacchiarini N, Cronin M, Sawyer C, Williams C, Beazer A, Cottrell S, Morgan M, Saunders V, Moore C, Connor TR, Williams C. Novel recombinant SARS-CoV-2 lineage detected through genomic surveillance in Wales, UK. Microb Genom 2023; 9. [PMID: 37052600 DOI: 10.1099/mgen.0.000984] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/14/2023] Open
Abstract
Recombination, the process whereby a segment of genetic material from one genome is inserted into another, producing a new chimeric genome, is an important evolutionary mechanism frequently observed in coronaviruses. The risks posed by recombination include the shuffling of advantageous mutations that may increase transmissibility, severity or vaccine escape. We present a genomic and epidemiological description of a new recombinant lineage of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), XR, first identified in Wales. The Pathogen Genomics Unit (Public Health Wales, UK) sequences positive SARS-CoV-2 PCR tests using the ARTIC SARS-CoV-2 sequencing protocol. Recombinants were detected using an in-house pipeline and the epidemiological data analysed in R. Nosocomial cases were defined as those with samples taken after >7 days in hospital. Between February and March 2022, we identified 78 samples with highly similar genomes, comprising a BA.1-like 5' end, a BA.2-like 3' end and a BA.2-like spike protein. This signature is consistent with recombination and was defined as XR by Pangolin (PANGO v1.8). A total of 50 % of cases had a sample collected whilst in hospital and the first three cases were immunocompromised patients. The patient median age was 58 years (range: 4-95 years) and most of the patients were fully vaccinated against SARS-CoV-2 (74 % third dose/booster). Three patients died within 28 days of their sample collection date, one of whom had COVID-19 listed amongst ICD10 (International Classification of Diseases 10) coded causes of death. Our integrated system enabled real-time monitoring of recombinant SARS-CoV-2 for early detection, in order to rapidly risk assess and respond. This work highlights the importance of setting-based surveillance of recombinant SARS-CoV-2, as well as the need to monitor immunocompromised populations through repeat testing and sequencing.
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Affiliation(s)
- Nicole Pacchiarini
- Communicable Disease Surveillance Centre (CDSC), Public Health Wales, Cardiff, Wales, UK
| | - Michelle Cronin
- Communicable Disease Surveillance Centre (CDSC), Public Health Wales, Cardiff, Wales, UK
| | - Clare Sawyer
- Communicable Disease Surveillance Centre (CDSC), Public Health Wales, Cardiff, Wales, UK
| | - Catie Williams
- Pathogen Genomics Unit, Public Health Wales, Cardiff, Wales, UK
| | - Andrew Beazer
- Pathogen Genomics Unit, Public Health Wales, Cardiff, Wales, UK
| | - Simon Cottrell
- Communicable Disease Surveillance Centre (CDSC), Public Health Wales, Cardiff, Wales, UK
| | - Mari Morgan
- Communicable Disease Surveillance Centre (CDSC), Public Health Wales, Cardiff, Wales, UK
| | - Vince Saunders
- Cardiff and Vale University Health Board, Cardiff, Wales, UK
| | - Catherine Moore
- Wales Specialist Virology Centre, Microbiology, Public Health Wales, Cardiff, Wales, UK
| | - Thomas R Connor
- Pathogen Genomics Unit, Public Health Wales, Cardiff, Wales, UK
- Cardiff University School of Biosciences, Cardiff University, Cardiff, Wales, UK
| | - Christopher Williams
- Communicable Disease Surveillance Centre (CDSC), Public Health Wales, Cardiff, Wales, UK
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Mays H, Nasa A, Asif M, Cronin M, Daly C. Rhythm vs rate control strategy effect on direct current cardioversion outcomes for atrial fibrillation. Ir Med J 2023; 116:7. [PMID: 36916905] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Subscribe] [Scholar Register] [Indexed: 03/16/2023]
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O'Connell L, Asad H, Hall G, Jones T, Walters J, Manchipp-Taylor L, Barry J, Keighan D, Jones H, Williams C, Cronin M, Hughes H, Morgan M, Connor TR, Healy B. Detailed analysis of in-hospital transmission of SARS-CoV-2 using whole genome sequencing. J Hosp Infect 2023; 131:23-33. [PMID: 36240955 PMCID: PMC9554319 DOI: 10.1016/j.jhin.2022.09.023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2022] [Revised: 09/09/2022] [Accepted: 09/11/2022] [Indexed: 01/25/2023]
Abstract
BACKGROUND Hospital transmission of SARS-CoV-2 has proved difficult to control, with healthcare-associated infections troublesome throughout. AIM To understand factors contributing to hospital transmission of infections, which is necessary for containing spread. METHODS An outbreak of 56 staff and patient cases of COVID-19 over a 31-day period in a tertiary referral unit is presented, with at least a further 29 cases identified outside of the unit and the hospital by whole genome sequencing (WGS). FINDINGS Transmission is documented from staff to staff, staff to patients, and patients to staff, showing disruption of a tertiary referral service, despite implementation of nationally recommended control measures, superior ventilation, and use of personal protective equipment. There was extensive spread from the index case, despite this patient spending only 10 h bed bound on the ward in strict cubicle isolation and with an initial single target low level (CT = 32) polymerase chain reaction test. CONCLUSION This investigation highlights how effectively and rapidly SARS-CoV-2 can spread in certain circumstances. It raises questions about infection control measures in place at the time and calls into question the premise that transmissibility can be reliably detected by using lower sensitivity rapid antigen lateral flow tests. We also highlight the value of early intervention in reducing impact as well as the value of WGS in understanding outbreaks.
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Affiliation(s)
- L O'Connell
- Public Health Wales and Swansea Bay University Health Board, Swansea, UK. lorcan.o'
| | - H Asad
- Health Protection Communicable Disease Surveillance Centre (CDSC), Public Health Wales, Swansea, UK
| | - G Hall
- Swansea Bay University Health Board, Swansea, UK
| | - T Jones
- Swansea Bay University Health Board, Swansea, UK
| | - J Walters
- Quality Improvement Infection Prevention & Control, Infection Prevention & Control Team, Swansea Bay University Health Board, Swansea, UK
| | | | - J Barry
- Swansea Bay University Health Board, Swansea, UK
| | - D Keighan
- Estates, Swansea Bay University Health Board, Swansea, UK
| | - H Jones
- Health Protection CDSC, Public Health Wales, Carmarthen, UK
| | - C Williams
- Health Protection CDSC, Public Health Wales, Carmarthen, UK
| | - M Cronin
- Health Protection CDSC, Public Health Wales, Cardiff, UK
| | - H Hughes
- Public Health Wales and Cardiff University Health Board, Cardiff, UK
| | - M Morgan
- Healthcare Associated Infection, Antimicrobial Resistance & Prescribing Programme, Public Health Wales, Cardiff, UK
| | - T R Connor
- Public Health Wales and Cardiff University, Cardiff, UK
| | - B Healy
- Public Health Wales and Swansea Bay University Health Board, Swansea, UK
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Enoch S, Hasarova Z, Cronin M, Bridgwood K, Rao S, Kluxen F, Frericks M. SOC-V-01 Read-Across of the genotoxicity of active ingredients and residues in pesticides/pesticidal products using a novel metabolic similarity approach. Toxicol Lett 2022. [DOI: 10.1016/j.toxlet.2022.07.190] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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7
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Luck C, Jessopp M, Cronin M, Rogan E. Using population viability analysis to examine the potential long-term impact of fisheries bycatch on protected species. J Nat Conserv 2022. [DOI: 10.1016/j.jnc.2022.126157] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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8
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Alanezi S, Cronin M, Gobbo O, O’Mara S, O’Connor W, Gilchrist M, Colgan N. Identifying dynamic changes following traumatic brain injury using high resolution magnetic resonance images derived texture analysis. Phys Med 2021. [DOI: 10.1016/s1120-1797(22)00498-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
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9
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Huon M, Planque Y, Jessopp MJ, Cronin M, Caurant F, Vincent C. Fine-scale foraging habitat selection by two diving central place foragers in the Northeast Atlantic. Ecol Evol 2021; 11:12349-12363. [PMID: 34594504 PMCID: PMC8462179 DOI: 10.1002/ece3.7934] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2020] [Revised: 05/02/2021] [Accepted: 05/27/2021] [Indexed: 11/28/2022] Open
Abstract
Habitat selection and spatial usage are important components of animal behavior influencing fitness and population dynamic. Understanding the animal-habitat relationship is crucial in ecology, particularly in developing strategies for wildlife management and conservation. As this relationship is governed by environmental features and intra- and interspecific interactions, habitat selection of a population may vary locally between its core and edges. This is particularly true for central place foragers such as gray and harbor seals, where, in the Northeast Atlantic, the availability of habitat and prey around colonies vary at local scale. Here, we study how foraging habitat selection may vary locally under the influence of physical habitat features. Using GPS/GSM tags deployed at different gray and harbor seals' colonies, we investigated spatial patterns and foraging habitat selection by comparing trip characteristics and home-range similarities and fitting GAMMs to seal foraging locations and environmental data. To highlight the importance of modeling habitat selection at local scale, we fitted individual models to colonies as well as a global model. The global model suffered from issues of homogenization, while colony models showed that foraging habitat selection differed markedly between regions for both species. Despite being capable of undertaking far-ranging trips, both gray and harbor seals selected their foraging habitat depending on local availability, mainly based on distance from the last haul-out and bathymetry. Distance from shore and tidal current also influenced habitat preferences. Results suggest that local conditions have a strong influence on population spatial ecology, highlighting the relevance of processes occurring at fine geographical scale consistent with management within regional units.
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Affiliation(s)
- Mathilde Huon
- Centre d'Etudes Biologiques de ChizéUMR 7372 CNRS –La Rochelle UniversitéLa RochelleFrance
- Observatoire PelagisUMS 3462 CNRS ‐ La Rochelle Université, Pôle analytiqueLa RochelleFrance
| | - Yann Planque
- Centre d'Etudes Biologiques de ChizéUMR 7372 CNRS –La Rochelle UniversitéLa RochelleFrance
| | - Mark John Jessopp
- MaREI CentreEnvironmental Research InstituteUniversity College CorkCorkIreland
- School of Biological, Earth & Environmental SciencesUniversity College CorkCorkIreland
| | - Michelle Cronin
- MaREI CentreEnvironmental Research InstituteUniversity College CorkCorkIreland
| | - Florence Caurant
- Centre d'Etudes Biologiques de ChizéUMR 7372 CNRS –La Rochelle UniversitéLa RochelleFrance
- Observatoire PelagisUMS 3462 CNRS ‐ La Rochelle Université, Pôle analytiqueLa RochelleFrance
| | - Cécile Vincent
- Centre d'Etudes Biologiques de ChizéUMR 7372 CNRS –La Rochelle UniversitéLa RochelleFrance
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Basu H, Ding L, Pekkurnaz G, Cronin M, Schwarz TL. Kymolyzer, a Semi-Autonomous Kymography Tool to Analyze Intracellular Motility. ACTA ACUST UNITED AC 2021; 87:e107. [PMID: 32530579 DOI: 10.1002/cpcb.107] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
The movement of intracellular cargo, such as transcripts, proteins, and organelles, is fundamental to cellular function. Neurons, due to their long axons and dendrites, are particularly dependent on proper intracellular trafficking and vulnerable to defects in the movement of intracellular cargo that are noted in neurodegenerative and neurodevelopmental disorders. Accurate quantification of intracellular transport is therefore needed for studying the mechanisms of cargo trafficking, the influence of mutations, and the effects of potentially therapeutic pharmaceuticals. In this article, we introduce an algorithm called "Kymolyzer." The algorithm can quantify intracellular trafficking along a defined path, such as that formed by the aligned microtubules of axons and dendrites. Kymolyzer works as a semi-autonomous kymography software application. It constructs and analyzes kymographs to measure the movement and distribution of fluorescently tagged objects along a user-defined path. The algorithm can be used under a wide variety of experimental conditions and can extract a diverse array of motility parameters describing intracellular movement, including time spent in motion, percentage of objects in motion, percentage of objects that are stationary, and velocities of motile objects. This article serves as a user manual describing the design of Kymolyzer, providing a stepwise protocol for its use and illustrating its functions with common examples. © 2020 Wiley Periodicals LLC Basic Protocol: Kymolyzer, a semi-autonomous kymography tool to analyze intracellular motility.
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Affiliation(s)
- Himanish Basu
- Kirby Neurobiology Center, Boston Children's Hospital, Boston, Massachusetts.,Division of Medical Sciences, Harvard Medical School, Boston, Massachusetts
| | - Lai Ding
- Harvard NeuroDiscovery Center, Boston, Massachusetts.,Present Address: Brigham and Women's Hospital, Boston, Massachusetts
| | - Gulcin Pekkurnaz
- Kirby Neurobiology Center, Boston Children's Hospital, Boston, Massachusetts.,Department of Neurobiology, Harvard Medical School, Boston, Massachusetts.,Present Address: Division of Biological Sciences, University of California, San Diego, California
| | - Michelle Cronin
- Department of Neurobiology, Harvard Medical School, Boston, Massachusetts.,Present Address: Addgene, Watertown, Massachusetts
| | - Thomas L Schwarz
- Kirby Neurobiology Center, Boston Children's Hospital, Boston, Massachusetts.,Department of Neurobiology, Harvard Medical School, Boston, Massachusetts
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11
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James P, Harding M, Beecher T, Browne D, Cronin M, Guiney H, O'Mullane D, Whelton H. Impact of Reducing Water Fluoride on Dental Caries and Fluorosis. J Dent Res 2020; 100:507-514. [PMID: 33345672 DOI: 10.1177/0022034520978777] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Guidance intended to reduce fluoride toothpaste ingestion in early childhood was introduced in Ireland in 2002. In 2007, water fluoride concentration was adjusted from 0.8-1.0 to 0.6-0.8 ppm. The objective of this study was to determine the difference in caries and fluorosis levels following introduction of these 2 policy measures. A before-and-after study compared caries and fluorosis in random samples of 8-y-olds in Dublin (n = 707) and Cork-Kerry (n = 1148) in 2017 with 8-y-olds in Dublin (n = 679) and Cork-Kerry (n = 565) in 2002. Dentinal caries experience (primary teeth, d3vcmft(cde)) and fluorosis (permanent teeth, Dean's index of very mild or higher) were clinically measured. Lifetime exposure to community water fluoridation (CWF) was classified as "full CWF"/"no CWF." Effect of examination year on caries prevalence and severity and fluorosis prevalence was assessed using multivariate regression adjusting for other explanatory variables. There was little change in commencement of fluoride toothpaste use at ≤24 mo following introduction of toothbrushing guidance. Among children with full CWF, there was no statistically significant difference in caries prevalence or severity between 2017 and 2002. In 2017, caries prevalence was 55% in Dublin (full CWF) and 56% in Cork-Kerry (full CWF), and mean d3vcmft(cde) among children with caries was 3.4 and 3.7, respectively. Caries severity was less in 2017 (mean 4.2) than 2002 (mean 4.9) among children with no CWF (P = 0.039). The difference in caries severity between children with full CWF and no CWF was less in 2017 than in 2002 (interaction P = 0.013), suggesting a reduced benefit for CWF in 2017. In 2017, fluorosis prevalence was 18% in Dublin (full CWF) and 12% in Cork-Kerry (full CWF). Fluorosis was predominantly "very mild" with no statistically significant difference between 2017 and 2002. CWF at 0.6 to 0.8 ppm is an effective caries-preventive measure. Results suggested low uptake of toothbrushing guidance, a reduced caries-preventive effect for CWF in primary teeth, and no reduction in fluorosis following introduction of the policy measures.
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Affiliation(s)
- P James
- Oral Health Services Research Centre, Cork University Dental School and Hospital, University College Cork, Cork, Ireland
| | - M Harding
- Oral Health Services Research Centre, Cork University Dental School and Hospital, University College Cork, Cork, Ireland.,Cork Kerry Community Healthcare Area, Health Services Executive, Dental Clinic, St. Finbarr's Hospital, Cork, Ireland
| | - T Beecher
- Oral Health Services Research Centre, Cork University Dental School and Hospital, University College Cork, Cork, Ireland
| | - D Browne
- Oral Health Services Research Centre, Cork University Dental School and Hospital, University College Cork, Cork, Ireland.,Cork Kerry Community Healthcare Area, Health Services Executive, Dental Clinic, St. Finbarr's Hospital, Cork, Ireland
| | - M Cronin
- Department of Statistics, School of Mathematical Sciences, University College Cork, Cork, Ireland
| | - H Guiney
- Oral Health Services Research Centre, Cork University Dental School and Hospital, University College Cork, Cork, Ireland
| | - D O'Mullane
- Oral Health Services Research Centre, Cork University Dental School and Hospital, University College Cork, Cork, Ireland
| | - H Whelton
- College of Medicine and Health, University College Cork, Erinville, Cork, Ireland
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12
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Luck C, Jessopp M, Tully O, Cosgrove R, Rogan E, Cronin M. Estimating protected species bycatch from limited observer coverage: A case study of seal bycatch in static net fisheries. Glob Ecol Conserv 2020. [DOI: 10.1016/j.gecco.2020.e01213] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
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13
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Luck C, Cronin M, Gosch M, Healy K, Cosgrove R, Tully O, Rogan E, Jessopp M. Drivers of spatiotemporal variability in bycatch of a top marine predator: First evidence for the role of water turbidity in protected species bycatch. J Appl Ecol 2019. [DOI: 10.1111/1365-2664.13544] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Cian Luck
- MaREI, the SFI Research Centre for Energy Climate and Marine Environmental Research InstituteUniversity College Cork Cork Ireland
- Environmental Research Institute University College Cork Cork Ireland
- School of Biological, Earth, and Environmental Sciences University College Cork Cork Ireland
| | - Michelle Cronin
- MaREI, the SFI Research Centre for Energy Climate and Marine Environmental Research InstituteUniversity College Cork Cork Ireland
- Environmental Research Institute University College Cork Cork Ireland
| | - Martha Gosch
- MaREI, the SFI Research Centre for Energy Climate and Marine Environmental Research InstituteUniversity College Cork Cork Ireland
- Environmental Research Institute University College Cork Cork Ireland
| | - Kieran Healy
- South West Regional Inshore Fisheries Forum Cork Ireland
| | | | | | - Emer Rogan
- School of Biological, Earth, and Environmental Sciences University College Cork Cork Ireland
| | - Mark Jessopp
- MaREI, the SFI Research Centre for Energy Climate and Marine Environmental Research InstituteUniversity College Cork Cork Ireland
- Environmental Research Institute University College Cork Cork Ireland
- School of Biological, Earth, and Environmental Sciences University College Cork Cork Ireland
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14
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da Mata C, McKenna G, Anweigi L, Hayes M, Cronin M, Woods N, O'Mahony D, Allen PF. An RCT of atraumatic restorative treatment for older adults: 5 year results. J Dent 2019; 83:95-99. [PMID: 30862556 DOI: 10.1016/j.jdent.2019.03.003] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2018] [Revised: 03/01/2019] [Accepted: 03/06/2019] [Indexed: 11/29/2022] Open
Abstract
OBJECTIVES to compare the survival of ART and a conventional restorative technique (CT) for restoring carious lesions in older adults after 5 years. METHODS In this parallel randomised controlled clinical trial, 219 independently-living adults were recruited from a dental hospital/community and a geriatric day hospital. Ninety-nine patients who met the inclusion criteria and presented with carious lesions were randomly allocated to receive either ART or conventional restorations (anaesthesia, rotary instruments and resin-modified glass ionomer). The status of restorations was assessed 6 months, 1, 2 and 5 years after restoration placement. Estimates of cumulative survival were calculated for each interval between assessments and a Cox Proportional Hazards (PH) model was fitted to the interval-censored survival time. RESULTS Three hundred restorations (ART n=142; CT n=158) were placed on 99 patients, 46 males and 53 females, with a mean age of 73.2, SD: 6.8 (65-90 yrs). After 5 years, ART and CT presented cumulative probability of survival of 85% and 79% (p=0.8095), respectively. CONCLUSIONS ART presents survival rates comparable to a conventional technique, when treating older adults after 5 years. The ART approach could be a useful tool to provide dental care for older adults particularly in the nonclinical setting. (Trial Registration number: ISRCTN 76299321). CLINICAL RELEVANCE This study shows that ART presents survival rates comparable to conventional techniques to treat carious lesions in older patients after 5 years. It is well accepted by this age cohort, and therefore could be an alternative to treat the elderly, especially those who are homebound or cannot attend the dentist.
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Affiliation(s)
- C da Mata
- Cork University Dental School and Hospital, University College Cork, Ireland.
| | - G McKenna
- Centre for Dentistry, Queens University Belfast, Northern Ireland, United Kingdom
| | - L Anweigi
- Princess Nourah bint Abdulrahman University, Saudi Arabia
| | - M Hayes
- Cork University Dental School and Hospital, University College Cork, Ireland
| | - M Cronin
- School of Mathematical Sciences, University College Cork, Ireland
| | - N Woods
- Centre for Policy Studies, University College Cork, Ireland
| | - D O'Mahony
- School of Medicine, University College Cork, Ireland
| | - P F Allen
- Faculty of Dentistry, National University of Singapore, Singapore
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15
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Gosch M, Cronin M, Rogan E, Hunt W, Luck C, Jessopp M. Spatial variation in a top marine predator's diet at two regionally distinct sites. PLoS One 2019; 14:e0209032. [PMID: 30601852 PMCID: PMC6314570 DOI: 10.1371/journal.pone.0209032] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2018] [Accepted: 11/27/2018] [Indexed: 11/18/2022] Open
Abstract
In ecological studies it is often assumed that predator foraging strategies and resource use are geographically and seasonally homogeneous, resulting in relatively static trophic relationships. However, certain centrally placed foragers (e.g. seals) often have terrestrial sites for breeding, resting, and moulting that are geographically distinct, and associated with different habitat types. Therefore, accurate estimations of predator diet at relevant spatial and temporal scales are key to understanding energetic requirements, predator-prey interactions and ecosystem structure. We investigate geographic variation in the diet of grey seals (Halichoerus grypus), a relatively abundant and widely distributed central place forager, to provide insights into geographic variation in resource use. Prey composition was identified using scat samples collected over concurrent timescales and a multivariate approach was used to analyse diet from two contrasting habitats. Regional differences in prey assemblages occurred within all years (2011-2013) and all seasons (ANOSIM, all p<0.05), apart from in winter. Telemetry data were used to identify core foraging areas and habitats most likely associated with scat samples collected at the two haul-out sites. Regional differences in the diet appear to reflect regional differences in the physical habitat features, with seals foraging in deeper waters over sandy substrates showing a higher prevalence of pelagic and bentho-pelagic prey species such as blue whiting and sandeels. Conversely, seals foraging in comparatively shallow waters had a greater contribution of demersal and groundfish species such as cephalopods and flatfish in their diet. We suggest that shallower waters enable seals to spend more time foraging along the benthos while remaining within aerobic dive limits, resulting in more benthic species in the diet. In contrast, the diet of seals hauled-out in areas adjacent to deeper waters indicates that either seals engage in a more pelagic foraging strategy, or that seals can spend less time at the benthos, resulting in comparatively more pelagic prey recovered in the diet. The substantial differences in prey assemblages over a small spatial scale (<300 km) demonstrates the importance of using regionally-specific diet information in ecosystem-based models to better account for different trophic interactions.
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Affiliation(s)
- Martha Gosch
- MaREI Centre, Environmental Research Institute, University College Cork, Cork, Ireland
- School of Biological, Earth & Environmental Sciences, University College Cork, Cork, Ireland
- * E-mail:
| | - Michelle Cronin
- MaREI Centre, Environmental Research Institute, University College Cork, Cork, Ireland
| | - Emer Rogan
- School of Biological, Earth & Environmental Sciences, University College Cork, Cork, Ireland
| | - William Hunt
- MaREI Centre, Environmental Research Institute, University College Cork, Cork, Ireland
| | - Cian Luck
- MaREI Centre, Environmental Research Institute, University College Cork, Cork, Ireland
- School of Biological, Earth & Environmental Sciences, University College Cork, Cork, Ireland
| | - Mark Jessopp
- MaREI Centre, Environmental Research Institute, University College Cork, Cork, Ireland
- School of Biological, Earth & Environmental Sciences, University College Cork, Cork, Ireland
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16
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Hensey M, Cronin M, Keelan E, O'Neill J, Galvin J. A Retrospective Audit of In-Hospital 30-day Mortality from Acute Myocardial Infarction in Connolly Hospital Blanchardstown. Ir Med J 2017; 110:615. [PMID: 29168997] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
In 2015, The Department of Health published the first annual report of the "National Healthcare Quality Reporting System." Connolly Hospital was reported to a mortality rate within 30 days post-Acute Myocardial Infarction (AMI) of 9.87 per 100 cases which was statistically significantly higher than the national rate. We carried out a retrospective audit of patients who were HIPE-coded as having died within 30 days of AMI from 2011-2013 and identified 42 patients. On review, only 23 patients (54.8%) were confirmed as having had an AMI. We identified 12 patients who had AMI included on death certificate without any evidence for same. If the 22 patients incorrectly coded were excluded, the mortality rate within 30 days post-AMI in CHB would fall to 4.14 deaths per 100 cases, well below the national average. Inaccuracies of data collection can lead to erroneous conclusions when examining healthcare data.
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Affiliation(s)
- M Hensey
- Connolly Hospital Blanchardstown, Blanchardstown, Dublin 15
| | - M Cronin
- Connolly Hospital Blanchardstown, Blanchardstown, Dublin 15
| | - E Keelan
- Connolly Hospital Blanchardstown, Blanchardstown, Dublin 15
| | - J O'Neill
- Connolly Hospital Blanchardstown, Blanchardstown, Dublin 15
| | - J Galvin
- Connolly Hospital Blanchardstown, Blanchardstown, Dublin 15
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17
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Cronin M, Gerritsen H, Reid D, Jessopp M. Spatial Overlap of Grey Seals and Fisheries in Irish Waters, Some New Insights Using Telemetry Technology and VMS. PLoS One 2016; 11:e0160564. [PMID: 27682443 PMCID: PMC5040441 DOI: 10.1371/journal.pone.0160564] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2016] [Accepted: 07/21/2016] [Indexed: 11/19/2022] Open
Abstract
Seals and humans often target the same food resource, leading to competition. This is of mounting concern with fish stocks in global decline. Grey seals were tracked from southeast Ireland, an area of mixed demersal and pelagic fisheries, and overlap with fisheries on the Celtic Shelf and Irish Sea was assessed. Overall, there was low overlap between the tagged seals and fisheries. However, when we separate active (e.g. trawls) and passive gear (e.g. nets, lines) fisheries, a different picture emerged. Overlap with active fisheries was no different from that expected under a random distribution, but overlap with passive fisheries was significantly higher. This suggests that grey seals may be targeting the same areas as passive fisheries and/or specifically targeting passive gear. There was variation in foraging areas between individual seals suggesting habitat partitioning to reduce intra-specific competition or potential individual specialisation in foraging behaviour. Our findings support other recent assertions that seal/fisheries interactions in Irish waters are an issue in inshore passive fisheries, most likely at the operational and individual level. This suggests that seal population management measures would be unjustifiable, and mitigation is best focused on minimizing interactions at nets.
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Affiliation(s)
- M. Cronin
- MaREI Centre, Beaufort Building, Environmental Research Institute, University College Cork, Ringaskiddy, Co. Cork, Ireland
- * E-mail:
| | | | - D. Reid
- Marine Institute, Oranmore, Co. Galway, Ireland
| | - M. Jessopp
- MaREI Centre, Beaufort Building, Environmental Research Institute, University College Cork, Ringaskiddy, Co. Cork, Ireland
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18
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Stanton M, Cronin M, Lehouritis P, Tangney M. In vivo bacterial imaging without engineering; A novel probe-based strategy facilitated by endogenous nitroreductase enzymes. Curr Gene Ther 2016; 15:277-88. [PMID: 25619884 DOI: 10.2174/1566523215666150126122712] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2014] [Revised: 11/12/2014] [Accepted: 01/16/2015] [Indexed: 11/22/2022]
Abstract
The feasibility of utilising bacteria as vectors for gene therapy is becoming increasingly recognised. This is primarily due to a number of intrinsic properties of bacteria such as their tumour targeting capabilities, their ability to carry large genetic or protein loads and the availability of well-established genetic engineering tools for a range of common lab strains. However, a number of issues relating to the use of bacteria as vectors for gene therapy need to be addressed in order for the field to progress. Amongst these is the need for the development of non-invasive detection/imaging systems for bacteria within a living host. In vivo optical imaging has advanced preclinical research greatly, and typically involves engineering of bacteria with genetic expression constructs for luminescence (e.g. the lux operon) or fluorescent proteins (GFP etc.). This requirement for genetic modification can be restrictive, where engineering is not experimentally appropriate or technologically feasible (e.g. due to lack of suitable engineering tools). We describe a novel strategy exploiting endogenous bacterial enzymatic activity to specifically activate an exogenously administered fluorescent imaging probe. The red shifted, quenched fluorophore CytoCy5S is reduced to a fluorescent form by bacterial-specific nitroreductase (NTR) enzymes. NTR enzymes are present in a wide range of bacterial genera and absent in mammalian systems, permitting highly specific detection of Gram-negative and Gram-positive bacteria in vivo. In this study, dose-responsive bacterial-specific signals were observed in vitro from all genera examined - E. coli, Salmonella, Listeria, Bifidobacterium and Clostridium difficile. Examination of an NTR-knockout strain validated the enzyme specificity of the probe. In vivo whole-body imaging permitted specific, dose-responsive monitoring of bacteria over time in various infection models, and no toxicity to bacteria or host was observed. This study demonstrates the concept of exploiting innate NTR activity as a reporting strategy for wild-type bacteria using optical imaging, while the concept may also be extended to NTR-specific probes for use with other imaging modalities.
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Affiliation(s)
| | | | | | - Mark Tangney
- Cork Cancer Research Centre, BioSciences Institute, University College Cork, Ireland.
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19
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Abstract
This chapter describes the use of whole-body bioluminescent imaging (BLI) for the study of bacterial trafficking in live mice, with an emphasis on the use of bacteria in therapy of cancer. Bacteria present an attractive class of vector for cancer therapy, possessing a natural ability to grow preferentially within tumors following systemic administration. Bacteria engineered to express the lux gene cassette permit BLI detection of the bacteria and tumor sites concurrently. The location and levels of bacteria within tumors over time can be readily examined, visualized in two or three dimensions. The method is applicable to a wide range of bacterial species and tumor xenograft types. This article describes the protocol for analysis of bioluminescent bacteria within subcutaneous tumor-bearing mice. This powerful, and inexpensive, real-time imaging strategy represents an ideal method for the study of bacteria in vivo in the context of cancer research. This protocol outlines the procedure for studying lux-tagged Escherichia coli and Bifidobacterium breve in mice, demonstrating the spatial and temporal readout from 2D and 3D BLI achievable with whole-body in vivo luminescence imaging.
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Affiliation(s)
- Michelle Cronin
- Cork Cancer Research Centre, University College Cork, Cork, Ireland
| | - Ali R Akin
- Preclinical Imaging, PerkinElmer, Alameda, CA, USA
| | | | - Mark Tangney
- Cork Cancer Research Centre, University College Cork, Cork, Ireland.
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20
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Robbins JR, Brandecker A, Cronin M, Jessopp M, McAllen R, Culloch R. Handling dolphin detections from C-PODs, with the development of acoustic parameters for verification and the exploration of species identification possibilities. BIOACOUSTICS 2015. [DOI: 10.1080/09524622.2015.1125789] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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21
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Cronin M, Bois F, Fioravanzo E, Meinl T, Neagu D, Worth A, Yang C, Richarz AN. Computational chemistry solutions supporting chemical safety assessment: Lessons learned for using in silico approaches. Toxicol Lett 2015. [DOI: 10.1016/j.toxlet.2015.08.576] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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22
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Cronin M, Madden J, Mellor C, Przybylak K, Schultz T, Steinmetz F, Richarz AN. Supporting read-across predictions of toxicity – Going beyond molecular similarity. Toxicol Lett 2015. [DOI: 10.1016/j.toxlet.2015.08.570] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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23
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Davoren MP, Cronin M, Perry IJ, O’Connor K. OP17 Alcohol consumption among university students: developing a taxonomy of consumption to AID the tailoring of effective public health policy. Br J Soc Med 2015. [DOI: 10.1136/jech-2015-206256.17] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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24
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Byrne WL, Murphy CT, Cronin M, Wirth T, Tangney M. Bacterial-mediated DNA delivery to tumour associated phagocytic cells. J Control Release 2014; 196:384-93. [PMID: 25466954 DOI: 10.1016/j.jconrel.2014.10.030] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2014] [Revised: 10/23/2014] [Accepted: 10/29/2014] [Indexed: 12/29/2022]
Abstract
Phagocytic cells including macrophages, dendritic cells and neutrophils are now recognised as playing a negative role in many disease settings including cancer. In particular, macrophages are known to play a pathophysiological role in multiple diseases and present a valid and ubiquitous therapeutic target. The technology to target these phagocytic cells in situ, both selectively and efficiently, is required in order to translate novel therapeutic modalities into clinical reality. We present a novel delivery strategy using non-pathogenic bacteria to effect gene delivery specifically to tumour-associated phagocytic cells. Non-invasive bacteria lack the ability to actively enter host cells, except for phagocytic cells. We exploit this natural property to effect 'passive transfection' of tumour-associated phagocytic cells following direct administration of transgene-loaded bacteria to tumour regions. Using an in vitro-differentiated human monocyte cell line and two in vivo mouse models (an ovarian cancer ascites and a solid colon tumour model) proof of delivery is demonstrated with bacteria carrying reporter constructs. The results confirm that the delivery strategy is specific for phagocytic cells and that the bacterial vector itself recruits more phagocytic cells to the tumour. While proof of delivery to phagocytic cells is demonstrated in vivo for solid and ascites tumour models, this strategy may be applied to other settings, including non-cancer related disease.
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Affiliation(s)
- W L Byrne
- Cork Cancer Research Centre, University College Cork, Cork, Ireland
| | - C T Murphy
- Cork Cancer Research Centre, University College Cork, Cork, Ireland
| | - M Cronin
- Cork Cancer Research Centre, University College Cork, Cork, Ireland
| | - T Wirth
- Aurealis Pharma, Microkatu 1, FI-70211 Kuopio, Finland
| | - M Tangney
- Cork Cancer Research Centre, University College Cork, Cork, Ireland.
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25
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Cronin M, O’Regan C, O’Donoghue O, Kearney M, Kenny R. O1.20: Physical, psychological & cognitive risk factors for fear of falling. Eur Geriatr Med 2014. [DOI: 10.1016/s1878-7649(14)70103-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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26
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Davoren MP, Cronin M, Perry IJ, Demant J, O’Connor K. PP01 What are the different types of alcohol consumption among the youth of society? A narrative synthesis. Br J Soc Med 2014. [DOI: 10.1136/jech-2014-204726.99] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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27
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Cronin M, O’Regan C, Kearney M, Kenny R. P281: Functional and economic associations of fear of falling. Eur Geriatr Med 2014. [DOI: 10.1016/s1878-7649(14)70452-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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28
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Cronin M, Le Boeuf F, Murphy C, Roy DG, Falls T, Bell JC, Tangney M. Bacterial-mediated knockdown of tumor resistance to an oncolytic virus enhances therapy. Mol Ther 2014; 22:1188-1197. [PMID: 24569832 DOI: 10.1038/mt.2014.23] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2013] [Accepted: 02/12/2014] [Indexed: 12/14/2022] Open
Abstract
Oncolytic viruses (OVs) and bacteria share the property of tumor-selective replication following systemic administration. In the case of nonpathogenic bacteria, tumor selectivity relates to their ability to grow extracellularly within tumor stroma and is therefore ideally suited to restricting the production of bacterially produced therapeutic agents to tumors. We have previously shown the ability of the type 1 interferon antagonist B18R to enhance the replication and spread of vesicular stomatitis virus (VSV) by overcoming related cellular innate immunity. In this study, we utilized nonpathogenic bacteria (E. coli) expressing B18R to facilitate tumor-specific production of B18R, resulting in a microenvironment depleted of bioactive antiviral cytokine, thus "preconditioning" the tumor to enhance subsequent tumor destruction by the OV. Both in vitro and in vivo infection by VSVΔ51 was greatly enhanced by B18R produced from E. coli. Moreover, a significant increase in therapeutic efficacy resulted from intravenous (i.v.) injection of bacteria to tumor-bearing mice 5 days prior to i.v. VSVΔ51 administration, as evidenced by a significant reduction in tumor growth and increased survival in mice. Our strategy is the first example where two such diverse microorganisms are rationally combined and demonstrates the feasibility of combining complementary microorganisms to improve therapeutic outcome.
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Affiliation(s)
- Michelle Cronin
- Cork Cancer Research Centre, University College Cork, Cork, Ireland
| | - Fabrice Le Boeuf
- Cancer Therapeutics, Ottawa Hospital Research Institute, Ottawa, Ontario, Canada
| | - Carola Murphy
- Cork Cancer Research Centre, University College Cork, Cork, Ireland
| | - Dominic G Roy
- Cancer Therapeutics, Ottawa Hospital Research Institute, Ottawa, Ontario, Canada
| | - Theresa Falls
- Cancer Therapeutics, Ottawa Hospital Research Institute, Ottawa, Ontario, Canada
| | - John C Bell
- Cancer Therapeutics, Ottawa Hospital Research Institute, Ottawa, Ontario, Canada
| | - Mark Tangney
- Cork Cancer Research Centre, University College Cork, Cork, Ireland.
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Abstract
Certain bacteria have emerged as biological gene vectors with natural tumor specificity, capable of specifically delivering genes or gene products to the tumor environment when intravenously (i.v.) administered to rodent models. Here, we describe procedures for studying this phenomenon in vitro and in vivo for both invasive and noninvasive bacteria suitable for exploitation as tumor-specific therapeutic delivery vehicles, due to their ability to replicate specifically within tumors and/or mediate bacterial-mediated transfer of plasmid DNA to mammalian cells (bactofection).
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Affiliation(s)
- Joanne Cummins
- Cork Cancer Research Centre, BioSciences Institute, University College Cork, Cork, Ireland
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30
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Abstract
Understanding the links between foraging behaviour and habitat use of key species is essential to addressing fundamental questions about trophic interactions and ecosystem functioning. Eight female grey seals (Halichoerus grypus) were equipped with time-depth recorders linked to Fastloc GPS tags following the annual moult in southwest Ireland. Individual dives were coupled with environmental correlates to investigate the habitat use and dive behaviour of free-ranging seals. Dives were characterised as either pelagic, benthic, or shallow (where errors in location and charted water depth made differentiating between pelagic and benthic dives unreliable). Sixty-nine percent of dives occurring in water >50 m were benthic. Pelagic dives were more common at night than during the day. Seals performed more pelagic dives over fine sediments (mud/sand), and more benthic dives when foraging over more three-dimensionally complex rock substrates. We used Markov chain analysis to determine the probability of transiting between dive states. A low probability of repeat pelagic dives suggests that pelagic prey were encountered en route to the seabed. This approach could be applied to make more accurate predictions of habitat use in data-poor areas, and investigate contentious issues such as resource overlap and competition between top predators and fisheries, essential for the effective conservation of these key marine species.
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Affiliation(s)
- Mark Jessopp
- Coastal & Marine Research Centre, Environmental Research Institute, University College Cork, Cork, Ireland.
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31
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Lipson D, He J, Yelensky R, Miller V, Sheehan C, Brennan K, Jarosz M, Stephens P, Cronin M, Ross J. Abstract PD02-07: Next-generation sequencing of FFPE breast cancers demonstrates high concordance with FISH in calling HER2 amplifications and commonly detects other clinically relevant genomic alterations. Cancer Res 2012. [DOI: 10.1158/0008-5472.sabcs12-pd02-07] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Background: As more therapies targeting genomic alterations become available, next-generation sequencing (NGS) is increasingly performed in tumor types where mutational status may drive treatment choice. In addition to its ability to identify base substitutions, insertions and deletions across entire exons, NGS can detect relevant copy number changes such as amplification of HER2 in breast tumors. However, for NGS to be clinically applicable, it must reliably analyze FFPE tumor samples and show concordance with the best current diagnostic methods.
Methods: To confirm a clinical role for NGS in detecting copy number alterations, we identified 35 FFPE invasive breast carcinomas previously tested for HER2 status by FISH, including 15 HER2 positives (≥7 copies) and 20 HER2 negatives (<4 copies) and sequenced 3,230 exons of 182 cancer genes including HER2, in a CLIA certified lab (Foundation Medicine). Average coverage depth of >900X uniquely-mapping reads was obtained. Sequence data were analyzed for HER2 copy number (blinded to FISH results) based on a statistical model using allele frequencies and coverage depth of HER2 exons versus a process-matched normal control, classifying cases as HER2 positive (≥6 average copies), HER2 negative (<4 copies), intermediate (4–5 copies) or unknown (<20% tumor purity). The data were also analyzed for additional clinically relevant genomic alterations.
Results: High concordance was noted between HER2 copy number status determined by FISH and NGS: 30 of the 35 samples were classified as positive or negative by NGS, 1 was classified as intermediate and 4 as unknown due to low purity. Using FISH as a gold standard, NGS HER2 calls demonstrated an accuracy of 97% (29/30, 95% CI 83–99%), 93% sensitivity (13/14, 95% CI 69–99%) and 100% specificity (16/16, 95% CI 81–100%). One discordant case was noted (FISH positive, NGS negative). Furthermore, NGS revealed 70 additional alterations (38 base substitutions, 10 insertions/deletions, 22 copy number alterations) in 23 cancer genes (an average of 2.0 alterations per sample). Genomic alterations that predict sensitivity or resistance to approved or experimental targeted therapies and thus plausibly guide treatment decisions were found in 69% of patients. These include PIK3CA (16 cases, PI3 kinase/mTOR inhibitors), PTEN (3 cases, PI3K/AKT/mTOR inhibitors), KRAS (1 case, resistance to cetuximab and panitumumab), and NF1 (1 case, mTOR/MAPK inhibitors) plus amplifications of CCND1 (4 cases, CDK4 inhibitors), FGFR1 (3 cases, FGF inhibitors) and MCL1 (3 cases, BCL-2 inhibitors, resistance to anti-tubulin therapies). Four cases included co-amplification of RARA with HER2.
Conclusions: We conclude that HER2 status can be reliably determined by NGS on FFPE breast cancers and that NGS uncovers additional actionable genomic alterations that could impact disease management in a high proportion of patients. Further evaluation of NGS as a guide to therapy in breast cancer is warranted.
Citation Information: Cancer Res 2012;72(24 Suppl):Abstract nr PD02-07.
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Affiliation(s)
- D Lipson
- Foundation Medicine, Inc, Cambridge, MA; Albany Medical College, Albany, NY
| | - J He
- Foundation Medicine, Inc, Cambridge, MA; Albany Medical College, Albany, NY
| | - R Yelensky
- Foundation Medicine, Inc, Cambridge, MA; Albany Medical College, Albany, NY
| | - V Miller
- Foundation Medicine, Inc, Cambridge, MA; Albany Medical College, Albany, NY
| | - C Sheehan
- Foundation Medicine, Inc, Cambridge, MA; Albany Medical College, Albany, NY
| | - K Brennan
- Foundation Medicine, Inc, Cambridge, MA; Albany Medical College, Albany, NY
| | - M Jarosz
- Foundation Medicine, Inc, Cambridge, MA; Albany Medical College, Albany, NY
| | - P Stephens
- Foundation Medicine, Inc, Cambridge, MA; Albany Medical College, Albany, NY
| | - M Cronin
- Foundation Medicine, Inc, Cambridge, MA; Albany Medical College, Albany, NY
| | - J Ross
- Foundation Medicine, Inc, Cambridge, MA; Albany Medical College, Albany, NY
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Abstract
This video describes the use of whole body bioluminesce imaging (BLI) for the study of bacterial trafficking in live mice, with an emphasis on the use of bacteria in gene and cell therapy for cancer. Bacteria present an attractive class of vector for cancer therapy, possessing a natural ability to grow preferentially within tumors following systemic administration. Bacteria engineered to express the lux gene cassette permit BLI detection of the bacteria and concurrently tumor sites. The location and levels of bacteria within tumors over time can be readily examined, visualized in two or three dimensions. The method is applicable to a wide range of bacterial species and tumor xenograft types. This article describes the protocol for analysis of bioluminescent bacteria within subcutaneous tumor bearing mice. Visualization of commensal bacteria in the Gastrointestinal tract (GIT) by BLI is also described. This powerful, and cheap, real-time imaging strategy represents an ideal method for the study of bacteria in vivo in the context of cancer research, in particular gene therapy, and infectious disease. This video outlines the procedure for studying lux-tagged E. coli in live mice, demonstrating the spatial and temporal readout achievable utilizing BLI with the IVIS system.
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Affiliation(s)
- Chwanrow K Baban
- Cork Cancer Research Centre, BioSciences Institute, University College Cork
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33
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Abstract
The significant burden of resistance to conventional anticancer treatments in patients with advanced disease has prompted the need to explore alternative therapeutic strategies. The challenge for oncology researchers is to identify a therapy which is selective for tumors with limited toxicity to normal tissue. Engineered bacteria have the unique potential to overcome traditional therapies' limitations by specifically targeting tumors. It has been shown that bacteria are naturally capable of homing to tumors when systemically administered resulting in high levels of replication locally, either external to (non-invasive species) or within tumor cells (pathogens). Pre-clinical and clinical investigations involving bacterial vectors require relevant means of monitoring vector trafficking and levels over time, and development of bacterial-specific real-time imaging modalities are key for successful development of clinical bacterial gene delivery. This review discusses the currently available imaging technologies and the progress to date exploiting these for monitoring of bacterial gene delivery in vivo.
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Affiliation(s)
- M Cronin
- Cork Cancer Research Centre, BioSciences Institute, University College Cork, Cork, Ireland
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34
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Cronin M, Zomer A, Fitzgerald GF, van Sinderen D. Identification of iron-regulated genes of Bifidobacterium breve UCC2003 as a basis for controlled gene expression. Bioeng Bugs 2012; 3:157-67. [PMID: 22179149 DOI: 10.4161/bbug.18985] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
Iron is an essential growth factor for virtually all organisms. However, iron is not readily available in most environments and microorganisms have evolved specialized mechanisms, such as the use of siderophores and high-affinity transport systems, to acquire iron when confronted with iron-limiting conditions. In general these systems are tightly regulated to prevent iron-induced toxicity and because they are quite costly to the microbe. Because of this tight regulation we chose to explore the response of Bifidobacterium breve UCC2003 to iron limitation. Through microarray and complementation analyses we identified and characterized a presumed ferrous iron uptake system, encoded by bfeUOB, from B. breve UCC2003 and exploited its regulated transcription to develop an inducible expression system for use in bifidobacteria.
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Affiliation(s)
- Michelle Cronin
- Alimentary Pharmabiotic Centre and Department of Microbiology, University College Cork, Cork, Ireland
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35
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Cronin M, Akin AR, Collins SA, Meganck J, Kim JB, Baban CK, Joyce SA, van Dam GM, Zhang N, van Sinderen D, O'Sullivan GC, Kasahara N, Gahan CG, Francis KP, Tangney M. High resolution in vivo bioluminescent imaging for the study of bacterial tumour targeting. PLoS One 2012; 7:e30940. [PMID: 22295120 PMCID: PMC3266281 DOI: 10.1371/journal.pone.0030940] [Citation(s) in RCA: 102] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2011] [Accepted: 12/26/2011] [Indexed: 01/03/2023] Open
Abstract
The ability to track microbes in real time in vivo is of enormous value for preclinical investigations in infectious disease or gene therapy research. Bacteria present an attractive class of vector for cancer therapy, possessing a natural ability to grow preferentially within tumours following systemic administration. Bioluminescent Imaging (BLI) represents a powerful tool for use with bacteria engineered to express reporter genes such as lux. BLI is traditionally used as a 2D modality resulting in images that are limited in their ability to anatomically locate cell populations. Use of 3D diffuse optical tomography can localize the signals but still need to be combined with an anatomical imaging modality like micro-Computed Tomography (μCT) for interpretation. In this study, the non-pathogenic commensal bacteria E.coli K-12 MG1655 and Bifidobacterium breve UCC2003, or Salmonella Typhimurium SL7207 each expressing the luxABCDE operon were intravenously (IV) administered to mice bearing subcutaneous (s.c) FLuc-expressing xenograft tumours. Bacterial lux signal was detected specifically in tumours of mice post IV-administration and bioluminescence correlated with the numbers of bacteria recovered from tissue. Through whole body imaging for both lux and FLuc, bacteria and tumour cells were co-localised. 3D BLI and μCT image analysis revealed a pattern of multiple clusters of bacteria within tumours. Investigation of spatial resolution of 3D optical imaging was supported by ex vivo histological analyses. In vivo imaging of orally-administered commensal bacteria in the gastrointestinal tract (GIT) was also achieved using 3D BLI. This study demonstrates for the first time the potential to simultaneously image multiple BLI reporter genes three dimensionally in vivo using approaches that provide unique information on spatial locations.
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Affiliation(s)
- Michelle Cronin
- Cork Cancer Research Centre, Mercy University Hospital and Leslie C. Quick Jr. Laboratory, University College Cork, Cork, Ireland
| | - Ali R. Akin
- Caliper – a PerkinElmer Company, Alameda, California, United States of America
| | - Sara A. Collins
- Cork Cancer Research Centre, Mercy University Hospital and Leslie C. Quick Jr. Laboratory, University College Cork, Cork, Ireland
- School of Medicine, University of California Los Angeles, Los Angeles, California, United State of America
| | - Jeff Meganck
- Caliper – a PerkinElmer Company, Alameda, California, United States of America
| | - Jae-Beom Kim
- Caliper – a PerkinElmer Company, Alameda, California, United States of America
| | - Chwanrow K. Baban
- Cork Cancer Research Centre, Mercy University Hospital and Leslie C. Quick Jr. Laboratory, University College Cork, Cork, Ireland
| | - Susan A. Joyce
- Department of Microbiology and Alimentary Pharmabiotic Centre, University College Cork, Cork, Ireland
| | - Gooitzen M. van Dam
- Department of Surgery, Division of Surgical Oncology, BioOptical Imaging Center, University of Groningen, Groningen, The Netherlands
| | - Ning Zhang
- Caliper – a PerkinElmer Company, Alameda, California, United States of America
| | - Douwe van Sinderen
- Department of Microbiology and Alimentary Pharmabiotic Centre, University College Cork, Cork, Ireland
| | - Gerald C. O'Sullivan
- Cork Cancer Research Centre, Mercy University Hospital and Leslie C. Quick Jr. Laboratory, University College Cork, Cork, Ireland
| | - Noriyuki Kasahara
- School of Medicine, University of California Los Angeles, Los Angeles, California, United State of America
| | - Cormac G. Gahan
- Department of Microbiology and Alimentary Pharmabiotic Centre, University College Cork, Cork, Ireland
- School of Pharmacy, University College Cork, Cork, Ireland
| | - Kevin P. Francis
- Caliper – a PerkinElmer Company, Alameda, California, United States of America
| | - Mark Tangney
- Cork Cancer Research Centre, Mercy University Hospital and Leslie C. Quick Jr. Laboratory, University College Cork, Cork, Ireland
- School of Medicine, University of California Los Angeles, Los Angeles, California, United State of America
- * E-mail:
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Baban CK, Cronin M, O'Hanlon D, O'Sullivan GC, Tangney M. Bacteria as vectors for gene therapy of cancer. Bioeng Bugs 2011; 1:385-94. [PMID: 21468205 DOI: 10.4161/bbug.1.6.13146] [Citation(s) in RCA: 111] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2010] [Revised: 07/23/2010] [Accepted: 07/26/2010] [Indexed: 12/13/2022] Open
Abstract
Anti-cancer therapy faces major challenges, particularly in terms of specificity of treatment. The ideal therapy would eradicate tumor cells selectively with minimum side effects on normal tissue. Gene or cell therapies have emerged as realistic prospects for the treatment of cancer, and involve the delivery of genetic information to a tumor to facilitate the production of therapeutic proteins. However, there is still much to be done before an efficient and safe gene medicine is achieved, primarily developing the means of targeting genes to tumors safely and efficiently. An emerging family of vectors involves bacteria of various genera. It has been shown that bacteria are naturally capable of homing to tumors when systemically administered resulting in high levels of replication locally. Furthermore, invasive species can deliver heterologous genes intra-cellularly for tumor cell expression. Here, we review the use of bacteria as vehicles for gene therapy of cancer, detailing the mechanisms of action and successes at preclinical and clinical levels.
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Affiliation(s)
- Chwanrow K Baban
- Cork Cancer Research Centre, Mercy University Hospital and Leslie C. Quick Jr. Laboratory, University College Cork, Cork, Ireland
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Palmer G, Yelensky R, Lipson D, Jarosz M, Parker A, Sheehan C, Downing S, Curran J, Cronin M, Ross J. 800 ORAL Comprehensive Next-Generation Sequencing (NGS) From Formalin-fixed NSCLC, CRC and Melanoma Cancer Tissues Identifies Novel Mutations With Potential Clinical Utility. Eur J Cancer 2011. [DOI: 10.1016/s0959-8049(11)70637-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Campbell CM, Millett DT, O'Callaghan A, Marsh A, McIntyre GT, Cronin M. The effect of increased overjet on the magnitude and reproducibility of smiling in adult females. Eur J Orthod 2011; 34:640-5. [PMID: 21791712 DOI: 10.1093/ejo/cjr077] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Abstract
The objective of this study was to determine if increased overjet (greater than 6 mm) influences the magnitude and reproducibility of natural smile and maximal smile in Caucasian adult females. Twenty adult females with an increased overjet (6-10 mm) and 20 control adult females (overjet 2-4 mm) with no history of orthodontic treatment volunteered to participate. The mean age in the control group was 30.1 ± 6.4 years and the mean age in the test group was 31.9 ± 10.8 years. Three-dimensional stereophotogrammetric images were captured of each subject for three expressions: at rest, natural smile, and maximal smile. The images were recorded twice on two separate occasions, 6 weeks apart. Images were landmarked and a partial ordinary Procrustes superimposition was used to adjust for the differences in head posture between the same expressions. The magnitude of movement relative to the rest position, averaged over all the landmarks, was calculated and compared between the groups using analysis of variance (linear mixed-effects model); the intra- and inter-session reproducibility of both expressions was assessed. There was greater mean movement, averaged over all the landmarks, in the control group than in the increased overjet group for both natural smile and maximal smile (P = 0.0068). For these expressions, there were no statistically significant differences in reproducibility within sessions (P = 0.5403) or between sessions (P = 0.3665). Increased overjet had a statistically significant effect on the magnitude of smiling but did not influence the reproducibility of natural or maximal smile relative to controls.
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Affiliation(s)
- C M Campbell
- Postgraduate Orthodontic Unit, Oral Health and Development, Cork University Dental School and Hospital, University College Cork, Cork, Ireland
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Ahmad S, Casey G, Cronin M, Rajendran S, Sweeney P, Tangney M, O'Sullivan GC. Induction of effective antitumor response after mucosal bacterial vector mediated DNA vaccination with endogenous prostate cancer specific antigen. J Urol 2011; 186:687-93. [PMID: 21683415 DOI: 10.1016/j.juro.2011.03.139] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2010] [Indexed: 11/15/2022]
Abstract
PURPOSE The induction of systemic immune responses against antigenic targets that are over expressed by cancer cells represents a powerful therapeutic strategy to target metastatic cancer. We generated specific antitumor immune responses in a murine model of prostate cancer by oral administration of an attenuated strain of Salmonella typhimurium containing a plasmid coding for murine prostate stem cell antigen. MATERIALS AND METHODS Trafficking of S. typhimurium SL7207 in the initial 10 hours after gavage feeding was determined using a bacterial lux expressing strain and live bioluminescence imaging. For vaccination trials male C57 BL/6 mice were gavage fed SL7207/murine prostate stem cell antigen expressing plasmid or controls twice at 2-week intervals. One week after the last feeding the mice were challenged subcutaneously with TRAMPC1 murine prostate carcinoma cells. Tumor dynamics and animal survival were recorded. RESULTS Clearance of bacterial vector from animals was complete 9 hours after feeding. Delivery of vector transformed with a firefly luciferase reporter plasmid resulted in maximal eukaryotic reporter gene expression in splenocytes 48 hours after feeding. Induction of tumor protective immunity was achieved by feeding the mice murine prostate stem cell antigen expressing plasmid bearing bacteria and greater than 50% of immunized mice remained tumor free. No significant toxicity was observed. Induction of T-helper type 1 immune responses was determined by measuring interferon-γ produced by splenocytes from vaccinated mice. When adoptively transferred to naive animals, splenocytes from vaccinated mice prevented tumor growth in 66% of challenged animals. CONCLUSIONS Endogenous prostate cancer antigen gene delivery using a bacterial vector resulted in breaking immune tolerance to murine prostate stem cell antigen and significant retardation of tumor growth.
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Affiliation(s)
- Sarfraz Ahmad
- Leslie C. Quick Jr. Laboratory, Cork Cancer Research Centre, and Department of Surgery, Mercy University Hospital, University College Cork, Cork, Ireland
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Cronin M, Ventura M, Fitzgerald GF, van Sinderen D. Progress in genomics, metabolism and biotechnology of bifidobacteria. Int J Food Microbiol 2011; 149:4-18. [PMID: 21320731 DOI: 10.1016/j.ijfoodmicro.2011.01.019] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2010] [Revised: 01/06/2011] [Accepted: 01/10/2011] [Indexed: 12/16/2022]
Abstract
Members of the genus Bifidobacterium were first described over a century ago and were quickly associated with a healthy intestinal tract due to their numerical dominance in breast-fed babies as compared to bottle-fed infants. Health benefits elicited by bifidobacteria to its host, as supported by clinical trials, have led to their wide application as probiotic components of health-promoting foods, especially in fermented dairy products. However, the relative paucity of genetic tools available for bifidobacteria has impeded development of a comprehensive molecular understanding of this genus. In this review we present a summary of current knowledge on bifidobacterial metabolism, classification, physiology and genetics and outline the currently available methods for genetically accessing and manipulating the genus.
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Affiliation(s)
- Michelle Cronin
- Cork Cancer Research Centre, Mercy University Hospital and Leslie C. Quick Jnr. Laboratory, University College Cork, Cork, Ireland
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Fennessy BG, O'Connor R, Cronin M, Fenton JE, Hughes JP. Safety implications of the Boyle-Davis mouth gag and tracheal tube position in tonsillectomy. Br J Anaesth 2010; 105:863-6. [PMID: 20926477 DOI: 10.1093/bja/aeq264] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
BACKGROUND The risk of death after tonsillectomy is extremely small, and is mostly caused by the direct or indirect effects of haemorrhage or anaesthetic complications. These complications include aspiration, accidental dislodgement of the tracheal tube (TT), and pneumothorax or pneumomediastinum. The Boyle-Davis mouth gag (BDG) is a device used to visualize the oropharynx and stabilize the TT during tonsillectomy. We postulate that a deployed BDG may influence the position of the TT, and potentially result in silent aspiration, accidental extubation, and unilateral pulmonary ventilation. This has not, to our knowledge, been evaluated before. The aim of this prospective, pilot study was to evaluate the displacement of the TT upon opening and closing the BDG, in an objective manner. METHODS Patients undergoing tonsillectomy with/without adenoidectomy at a regional department underwent flexible bronchoscopy to evaluate the changes in position of the TT tip with the BDG in an open and closed position, relative to the position of the carina. RESULTS Twenty-three patients were enrolled into the study. Deploying the BDG resulted in TT displacement in 96% of patients. The mean displacement was 9.5 mm (range -10 to +27 mm). CONCLUSIONS We believe that this study raises concerns not previously highlighted, on how manipulating a BDG may influence the TT position. It may serve to explain additional mechanisms of potentially fatal anaesthetic complications such as TT dislodgement, unilateral ventilation, and pneumothorax, particularly in paediatric patients, after tonsillectomy.
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Affiliation(s)
- B G Fennessy
- Department of ENT, University of Limerick Medical School and the Midwestern Regional Hospital, Dooradoyle, Limerick, Ireland.
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Donaldson O, Cronin M, Yate R. P28.12 How accurate is orthopaedic surgical site surveillance? Experiences from a district general hospital. J Hosp Infect 2010. [DOI: 10.1016/s0195-6701(10)60261-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Burke FM, Whelton H, Harding M, Crowley E, O’Mullane D, Cronin M, Kelleher V, Byrtek M. Fluoridation and tooth wear in Irish adults. Community Dent Oral Epidemiol 2010; 38:415-21. [DOI: 10.1111/j.1600-0528.2010.00550.x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Cronin M, Zuur AF, Rogan E. A modelling framework to optimize timing of haulout counts for estimating harbour seal (<i>Phoca vitulina</i>) abundance. NAMMCOSP 2010. [DOI: 10.7557/3.2686] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
The time of year and day, the state of the tide and prevailing environmental conditions significantly influence seal haulout behaviour. Understanding these effects is fundamentally important in deriving accurate estimates of harbour seal abundance from haulout data. We present a modelling approach to assess the influence of these variables on seals’ haulout behaviour and, by identifying the combination of covariates during which seal abundance is highest, predict the optimal time and conditions for future surveys. Count data of harbour seals at haulouts in southwest Ireland collected during 2003-2005 were included in mixed additive models together with environmental covariates, including season, time of day and weather conditions. The models show maximum abundance at haulout sites occurred during midday periods during August and in late afternoon/early evening during September. Accurate national and local population estimates are essential for the effective monitoring of the conservation status of the species and for the identification, management and monitoring of Special Areas of Conservation (SAC) in accordance with the EU Habitats Directive. Our model based approach provides a useful tool for optimising the timing of harbourseal surveys in Ireland and the modelling framework is useful for predicting optimal survey periods for other protected, endangered or significant species worldwide.
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van Pijkeren JP, Morrissey D, Monk IR, Cronin M, Rajendran S, O'Sullivan GC, Gahan CGM, Tangney M. A novel Listeria monocytogenes-based DNA delivery system for cancer gene therapy. Hum Gene Ther 2010; 21:405-16. [PMID: 20105075 DOI: 10.1089/hum.2009.022] [Citation(s) in RCA: 55] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
Bacteria-mediated transfer of plasmid DNA to mammalian cells (bactofection) has been shown to have significant potential as an approach to express heterologous proteins in various cell types. This is achieved through entry of the entire bacterium into cells, followed by release of plasmid DNA. In a murine model, we show that Listeria monocytogenes can invade and spread in tumors, and establish the use of Listeria to deliver genes to tumors in vivo. A novel approach to vector lysis and release of plasmid DNA through antibiotic administration was developed. Ampicillin administration facilitated both plasmid transfer and safety control of vector. To further improve on the gene delivery system, we selected a Listeria monocytogenes derivative that is more sensitive to ampicillin, and less pathogenic than the wild-type strain. Incorporation of a eukaryotic-transcribed lysin cassette in the plasmid further increased bacterial lysis. Successful gene delivery of firefly luciferase to growing tumors in murine models and to patient breast tumor samples ex vivo was achieved. The model described encompasses a three-phase treatment regimen, involving (1) intratumoral administration of vector followed by a period of vector spread, (2) systemic ampicillin administration to induce vector lysis and plasmid transfer, and (3) systemic administration of combined moxifloxacin and ampicillin to eliminate systemic vector. For the first time, our results reveal the potential of Listeria monocytogenes for in vivo gene delivery.
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Affiliation(s)
- Jan Peter van Pijkeren
- Cork Cancer Research Centre, Mercy University Hospital and Leslie C. Quick Jnr. Laboratory, University College Cork, Cork, Ireland
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Cronin M, Morrissey D, Rajendran S, El Mashad SM, van Sinderen D, O'Sullivan GC, Tangney M. Orally administered bifidobacteria as vehicles for delivery of agents to systemic tumors. Mol Ther 2010; 18:1397-407. [PMID: 20389288 DOI: 10.1038/mt.2010.59] [Citation(s) in RCA: 80] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Certain bacteria have emerged as biological gene vectors with natural tumor specificity, capable of specifically delivering genes or gene products to the tumor environment when intravenously (i.v.) administered to rodent models. We show for the first time that oral administration of bacteria to mice resulted in their translocation from the gastrointestinal tract (GIT) with subsequent homing to and replication specifically in tumors. The commensal, nonpathogenic Bifidobacterium breve UCC2003 harboring a plasmid expressing lux fed to mice bearing subcutaneous (s.c.) tumors were readily detected specifically in tumors, by live whole-body imaging, at levels similar to i.v. administration. Reporter gene expression was visible for >2 weeks in tumors. Mice remained healthy throughout experiments. Cytokine analyses indicated a significant upregulation of interferon-gamma (IFN-gamma) in the GIT of bifidobacteria-fed mice, which is associated with increases in epithelial permeability. However, B. breve feeding did not increase systemic levels of other commensal bacteria. The presence of tumor was not necessary for translocation to systemic organs to occur. These findings indicate potential for safe and efficient gene-based treatment and/or detection of tumors via ingestion of nonpathogenic bacteria expressing therapeutic or reporter genes.
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Affiliation(s)
- Michelle Cronin
- Cork Cancer Research Centre, Mercy University Hospital and Leslie C. Quick Jnr. Laboratory, University College Cork, Cork, Ireland
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Cronin M, Dinger J. O188 Counseling on the risks and benefits of OC use. Int J Gynaecol Obstet 2009. [DOI: 10.1016/s0020-7292(09)60560-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Endrikat J, Gerlinger C, Cronin M, Ruebig A, Schmidt W, Düsterberg B. Blood pressure stability in a normotensive population during intake of a monophasic oral contraceptive containing 20 μg ethinylestradiol and 75 g gestodene. EUR J CONTRACEP REPR 2009. [DOI: 10.1080/ejc.6.3.159.166] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Endrikat J, Gerlinger C, Cronin M, Wessel J, Ruebig A, Rosenbaum P, Düsterberg B. Body weight change during use of a monophasic oral contraceptive containing 20 μg ethinylestradiol and 75 μg gestodene with a comparison of the women who completed versus those who prematurely discontinued intake. EUR J CONTRACEP REPR 2009. [DOI: 10.1080/ejc.6.4.199.204] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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McKenna G, Allen PF, O'Mahony D, DaMata C, Cronin M, Woods N. The importance of oral health for the systemic well being of an ageing population. Ir Med J 2009; 102:202-204. [PMID: 19771997] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
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