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Fallon M, Kennedy S, Daniels S, Humphreys H. Plasma-activated liquid as a potential decontaminant in healthcare: assessment of antibacterial activity and use with cleaning cloths. J Hosp Infect 2024; 145:218-223. [PMID: 38272125 DOI: 10.1016/j.jhin.2024.01.008] [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] [Received: 11/28/2023] [Revised: 12/21/2023] [Accepted: 01/08/2024] [Indexed: 01/27/2024]
Abstract
BACKGROUND Cold air plasma (CAP) can generate plasma-activated liquids (PALs) with high concentrations of reactive oxygen (ROS) and nitrogen species (RNS), e.g., nitrites, with antimicrobial properties. AIM We investigated the concentrations of ROS and RNS in saline PAL. We assessed planktonic bacterial inactivation by PAL and the decontamination of contaminated cleaning cloths. METHODS Phosphate-buffered saline (PBS) was treated with an air-driven CAP jet for 90 or 300 s to generate PAL. The ROS and RNS were measured using quantitative fluorescent (2,7-dichlorofluorescin diacetate) and colourimetric (Greiss) assays. Isolates of MRSA and Escherichia coli were incubated in PAL overnight and inactivation measured through colony forming unit (cfu) assays. Sections of cleaning cloths were incubated with MRSA and E. coli, and treated with PAL for 1 h. Bacterial inactivation was measured through resazurin reduction assays. RESULTS Nitrites increased from 0.1 μM in untreated PBS to 49.1 μM and to 94.0 μM in 90- and 300-s CAP-treated PAL, respectively. ROS increased from 30 μM in untreated PBS to 75 μM and to 103 μM in 90- and 300-s CAP-treated PAL, respectively. 90-s PAL reduced MRSA and E. coli viability (P<0.05) and 300-s PAL resulted in more than a 7-log reduction of both. One-hour treatment of contaminated cleaning cloths in PAL resulted in a 55% and 73% reduction in viable MRSA and E. coli, respectively (P<0.05). CONCLUSION Inactivation of planktonic bacteria correlated with ROS and RNS concentrations. PAL reduced bacteria contaminated cleaning cloths. PAL has potential as a hospital disinfectant, including cleaning cloths.
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Affiliation(s)
- M Fallon
- Department of Clinical Microbiology, Royal College of Surgeons in Ireland University of Medicine and Health Sciences, Dublin, Ireland
| | - S Kennedy
- Department of Clinical Microbiology, Royal College of Surgeons in Ireland University of Medicine and Health Sciences, Dublin, Ireland
| | - S Daniels
- National Centre for Plasma Science and Technology, Dublin City University, Dublin, Ireland
| | - H Humphreys
- Department of Clinical Microbiology, Royal College of Surgeons in Ireland University of Medicine and Health Sciences, Dublin, Ireland.
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Upadrasta A, Daniels S, Humphreys H. Cold atmospheric air plasma-activated mist as a potential decontaminant against SARS-CoV-2 surrogate in saliva. J Hosp Infect 2024; 143:215-217. [PMID: 37734677 DOI: 10.1016/j.jhin.2023.09.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2023] [Accepted: 09/11/2023] [Indexed: 09/23/2023]
Affiliation(s)
- A Upadrasta
- Department of Clinical Microbiology, Royal College of Surgeons in Ireland University of Medicine and Health Sciences, Dublin, Ireland
| | - S Daniels
- School of Electronic Engineering, Dublin City University, Glasnevin Campus, Dublin, Ireland
| | - H Humphreys
- Department of Clinical Microbiology, Royal College of Surgeons in Ireland University of Medicine and Health Sciences, Dublin, Ireland.
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Curtis F, Li L, Kolanko M, Lai H, Daniels S, True J, Del Giovane M, Golemme M, Lyall R, Raza S, Hassim N, Patel A, Beal E, Walsh C, Purnell M, Whitethread N, Nilforooshan R, Norman C, Wingfield D, Barnaghi P, Sharp D, Dani M, Fertleman M, Parkinson M. 1362 ANTICHOLINERGIC PRESCRIBING HABITS AND ITS ASSOCIATIONS IN A COMMUNITY POPULATION OF PEOPLE LIVING WITH DEMENTIA. Age Ageing 2023. [DOI: 10.1093/ageing/afac322.039] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023] Open
Abstract
Abstract
Introduction
Many commonly prescribed medications have inadvertent anticholinergic effects. People with Dementia (PwD) are more vulnerable to these effects and at risk of adverse outcomes, the risk being higher with a greater degree of anticholinergic exposure. We investigated prescribing patterns and Anticholinergic burden (ACB) in a cohort of community-dwelling older adults with dementia and aimed to explore the effect of ACB on cognition, mood, and quality of life(QoL).
Method
The medication and demographic information for 87 (39 female) community-dwelling PwD were obtained from Electronic Care Summaries. We used the German Anticholinergic Burden Scale (GABS) to measure ACB. Additionally, we investigated associations between ACB and cognitive (ADAS-Cog), functional (BADL) and QoL (DemQoL) assessments.
Results
28.7% of participants had a clinically significant score (ACB> 2). The most commonly prescribed medications with ACB were Lansoprazole(18.3%), Mirtazapine(12.6%) and Codeine(12.6%). ACB was higher in males and negatively correlated with age, r(87)=-.21,p=.03. There was no association between ACB and cognition, QoL, functional independence, and neuropsychiatric symptoms. Over six months, PLWD with no ACB had a greater negative change in neuropsychiatric symptoms[t(18)=2.27,p=.04] and functional independence[t(23)=-3.8,p=.001], indicating greater dependence and worsening neuropsychiatric symptoms.
Conclusion
A third of PLWD in the community had clinically significant ACB. No ACB was associated with worsening neuropsychiatric symptoms and functional dependence over a six-month period. Community prescribers should consider regular medication reviews with PLWD and carers to ensure medications are prescribed safely and appropriately.
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Affiliation(s)
- F Curtis
- Imperial College London , Department of Brain Sciences
| | - L Li
- Imperial College London , Department of Brain Sciences
| | - M Kolanko
- Imperial College London , Department of Brain Sciences
| | - H Lai
- Imperial College London , Department of Brain Sciences
| | - S Daniels
- Imperial College London , Department of Brain Sciences
| | - J True
- Imperial College London , Department of Brain Sciences
| | - M Del Giovane
- Imperial College London , Department of Brain Sciences
| | - M Golemme
- Imperial College London , Department of Brain Sciences
| | - R Lyall
- Imperial College London , Department of Brain Sciences
| | - S Raza
- Imperial College London , Department of Brain Sciences
| | - N Hassim
- Imperial College London , Department of Brain Sciences
| | - A Patel
- Imperial College London , Department of Brain Sciences
| | - E Beal
- Imperial College London , Department of Brain Sciences
| | - C Walsh
- Imperial College London , Department of Brain Sciences
| | - M Purnell
- Imperial College London , Department of Brain Sciences
| | - N Whitethread
- Imperial College London , Department of Brain Sciences
| | | | - C Norman
- Imperial College London , Department of Brain Sciences
| | - D Wingfield
- Imperial College London , Department of Brain Sciences
| | - P Barnaghi
- Imperial College London , Department of Brain Sciences
| | - D Sharp
- Imperial College London , Department of Brain Sciences
| | - M Dani
- Imperial College London , Department of Brain Sciences
| | - M Fertleman
- Imperial College London , Department of Brain Sciences
| | - M Parkinson
- UK DRI Centre for Care Research and Technology
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Seed MJ, Fowler K, Byrne L, Carder M, Daniels S, Iskandar IYK, Feary J, Gawkrodger DJ, van Tongeren M. Skin and respiratory ill-health attributed to occupational face mask use. Occup Med (Lond) 2022; 72:339-342. [PMID: 35689550 PMCID: PMC9384225 DOI: 10.1093/occmed/kqac031] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
BACKGROUND Face mask use in the workplace has become widespread since the onset of the Covid-19 pandemic and has been anecdotally linked to adverse health consequences. AIMS To examine reports of adverse health consequences of occupational face mask use received by The Health and Occupation Research (THOR) network before and after the pandemic onset. METHODS THOR databases were searched to identify all cases of ill-health attributed to 'face mask' or similar suspected causative agent between 1 January 2010 and 30 June 2021. RESULTS Thirty two cases were identified in total, 18 reported by occupational physicians and 14 by dermatologists. Seventy-five per cent of cases were reported after the pandemic onset and 91% cases were in the health and social care sector. 25 of the 35 (71%) diagnoses were dermatological, the most frequent diagnoses being contact dermatitis (14 cases) and folliculitis/acne (6 cases). Of the seven respiratory diagnoses, four were exacerbation of pre-existing asthma. CONCLUSIONS There is evidence of an abrupt increase in reports of predominantly dermatological ill-health attributed to occupational face mask use since the start of the pandemic. Respiratory presentations have also occurred.
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Affiliation(s)
- M J Seed
- Centre for Occupational and Environmental Health, University of Manchester, Manchester, UK
| | - K Fowler
- Centre for Occupational and Environmental Health, University of Manchester, Manchester, UK
| | - L Byrne
- Centre for Occupational and Environmental Health, University of Manchester, Manchester, UK
| | - M Carder
- Centre for Occupational and Environmental Health, University of Manchester, Manchester, UK
| | - S Daniels
- Centre for Occupational and Environmental Health, University of Manchester, Manchester, UK
| | - I Y K Iskandar
- Centre for Occupational and Environmental Health, University of Manchester, Manchester, UK
| | - J Feary
- National Heart and Lung Institute, Imperial College London, London, UK
| | - D J Gawkrodger
- Department of Dermatology, University of Sheffield, Sheffield, UK
| | - M van Tongeren
- Centre for Occupational and Environmental Health, University of Manchester, Manchester, UK
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Lamidi S, Williams KM, Hind D, Peckham-Cooper A, Miller AS, Smith AM, Saha A, Macutkiewicz C, Griffiths EA, Catena F, Coccolini F, Toogood G, Tierney GM, Boyd-Carson H, Sartelli M, Blencowe NS, Lockwood S, Coe PO, Lee MJ, Barreto SG, Drake T, Gachabayov M, Hill J, Ioannidis O, Lostoridis E, Mehraj A, Negoi I, Pata F, Steenkamp C, Ahmed S, Alin V, Al-Rashedy M, Atici SD, Bains L, Bandyopadhyay SK, Baraket O, Bates T, Beral D, Brown L, Buonomo L, Burke D, Caravaglios G, Ceresoli M, Chapman SJ, Cillara N, Clarke R, Colak E, Daniels S, Demetrashvili Z, Di Carlo I, Duff S, Dziakova J, Elliott JA, El Zalabany T, Engledow A, Ewnte B, Fraga GP, George R, Giuffrida M, Glasbey J, Isik A, Kechagias A, Kenington C, Kessel B, Khokha V, Kong V, Laloë P, Litvin A, Lostoridis E, Marinis A, Martínez-Pérez A, Menzies D, Mills R, Monzon BI, Morgan R, Neri V, Nita GE, Perra T, Perrone G, Porcu A, Poskus T, Premnath S, Sall I, Sarma DR, Slavchev M, Spence G, Tarasconi A, Tolonen M, Toro A, Venn ML, Vimalachandran D, Wheldon L, Zakaria AD. Defining core patient descriptors for perforated peptic ulcer research: international Delphi. Br J Surg 2022; 109:603-609. [PMID: 35467718 DOI: 10.1093/bjs/znac096] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2021] [Revised: 02/09/2022] [Accepted: 03/08/2022] [Indexed: 10/13/2023]
Abstract
BACKGROUND Perforated peptic ulcer (PPU) remains a common condition globally with significant morbidity and mortality. Previous work has demonstrated variation in reporting of patient characteristics in PPU studies, making comparison of studies and outcomes difficult. The aim of this study was to standardize the reporting of patient characteristics, by creating a core descriptor set (CDS) of important descriptors that should be consistently reported in PPU research. METHODS Candidate descriptors were identified through systematic review and stakeholder proposals. An international Delphi exercise involving three survey rounds was undertaken to obtain consensus on key patient characteristics for future research. Participants rated items on a scale of 1-9 with respect to their importance. Items meeting a predetermined threshold (rated 7-9 by over 70 per cent of stakeholders) were included in the final set and ratified at a consensus meeting. Feedback was provided between rounds to allow refinement of ratings. RESULTS Some 116 clinicians were recruited from 29 countries. A total of 63 descriptors were longlisted from the literature, and 27 were proposed by stakeholders. After three survey rounds and a consensus meeting, 27 descriptors were included in the CDS. These covered demographic variables and co-morbidities, risk factors for PPU, presentation and pathway factors, need for organ support, biochemical parameters, prognostic tools, perforation details, and surgical history. CONCLUSION This study defines the core descriptive items for PPU research, which will allow more robust synthesis of studies.
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Singla R, West F, Au A, Daniels S, Zeniecki P, Baig S. 266 Gender Differences Among Patients Undergoing Pulmonary Embolism Response Team Evaluation: The Role of Point-of-Care Echo. Ann Emerg Med 2021. [DOI: 10.1016/j.annemergmed.2021.09.279] [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: 11/25/2022]
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Waring B, Rousson L, Daniels S, Harris P, Moore-Colyer M. 56 What is haylage—UK horse owners’ perception. J Equine Vet Sci 2021. [DOI: 10.1016/j.jevs.2021.103519] [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: 10/21/2022]
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8
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Dwyer T, Jacobs DR, Woo JG, Urbina EM, Bazzano L, Juonala M, Viikari JS, Chen W, Prineas RJ, Steinberger J, Daniels S, Sinaiko A, Venn A, Burns T, Raitakari OT. 1447Childhood risk factors and cardiovascular disease outcomes in adulthood. Preliminary findings from the International Childhood Cardiovascular Cohort (i3C) Consortium. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz748.0082] [Citation(s) in RCA: 1] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Background
Atherosclerosis develops decades before clinical cardiovascular disease (cCVD) occurs. Longitudinally, childhood risk factors predict adult pre-clinical atherosclerosis. There is currently no evidence directly linking childhood risk factors to cCVD.
Purpose
To provide the first direct evidence of any association between known risk factors for CVD when measured in childhood and adult CVD incidence and death.
Methods
Using i3C Consortium data, we linked childhood risk factors to adult cCVD. cCVD events were ascertained by participant re-contact in the US and Australia, medically adjudicated hospital records; and using the Finnish national health registry. Of 16,964 adult participants (mean age 49 years) examined during ages 3–19, 201 people with any cCVD event (70% coronary artery, 25% cerebrovascular, and 5% peripheral artery disease) have been determined. The analysis included Cox proportional hazard models. Each model was adjusted for childhood age, age at followup, sex and cohort/race. Continuous childhood variables were z-scored for each participant's last repeated measure during childhood.
Results
Childhood body mass index (BMI), serum total cholesterol (TC) and triglycerides, and systolic blood pressure were positively associated with adult cCVD events (P<0.0001). Smoking in childhood was associated with nearly 50% increased risk of adult cCVD (P=0.08). BMI; TC remained significant in the simultaneous risk factor model. The adjudication pipeline suggests that over 500 hospitalized cCVD events will be found on completion. Regression using the full set of imputed events yielded similar findings. Analysis of deaths is in process.
Childhood risk factor link to adult CVD Childhood risk variable Single risk factors models Simultaneous risk factor model n cCVD events/N at risk Hazard ratio (95% Confidence limits) p n cCVD events/N at risk Hazard ratio (95% Confidence limits) p Body Mass Index 201/16964 1.52 (1.33–1.73) <0.0001 142/11124 1.37 (1.14–1.64) 0.0008 Total cholesterol 191/13778 1.32 (1.14–1.52) 0.0001 " 1.21 (1.02–1.43) 0.03 Triglycerides 191/13654 1.17 (1.04–1.33) 0.01 " 1.04 (0.88–1.24) 0.6 Systolic blood pressure 190/14883 1.28 (1.11–1.48) 0.0007 " 1.18 (0.99–1.42) 0.07 Regular smoking ≥1/day 151/13436 1.44 (0.96–2.16) 0.08 " 1.43 (0.94–2.17) 0.10 Hazard ratios = increased risk per one standard deviation increase in continuous risk variables. E.g. every ∼0.9 mmol/L or ∼33 mg/dL increase in childhood total cholesterol is associated with a ∼32% and 21% increase in adult CVD risk in single and simultaneous risk factor models respectively. “Simultaneous risk factor model” recognizes that the risk factors are causally connected.
Conclusion
Childhood CVD risk factors predicts adult cCVD with implications for primordial CVD prevention.
Acknowledgement/Funding
National Heart, Lung, and Blood Institute (NHLBI)
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Affiliation(s)
- T Dwyer
- University of Oxford, The George Institute for Global Health, Nuffield Department of Women's & Reproductive Health, Oxford, United Kingdom
| | - D R Jacobs
- University of Minnesota, Minneapolis, United States of America
| | - J G Woo
- Cincinnati Children's Hospital Medical Center, Cincinnati, United States of America
| | - E M Urbina
- Cincinnati Children's Hospital Medical Center, Cincinnati, United States of America
| | - L Bazzano
- Tulane University, New Orleans, United States of America
| | | | | | - W Chen
- Tulane University, New Orleans, United States of America
| | - R J Prineas
- Wake Forest University, Winston-Salem, United States of America
| | - J Steinberger
- University of Minnesota, Minneapolis, United States of America
| | - S Daniels
- Children's Hospital Colorado, Aurora, United States of America
| | - A Sinaiko
- University of Minnesota, Minneapolis, United States of America
| | - A Venn
- University of Tasmania, Hobart, Australia
| | - T Burns
- University of Iowa, Iowa City, United States of America
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Gibson KM, Nguyen BN, Neumann LM, Miller M, Buss P, Daniels S, Ahn MJ, Crandall KA, Pukazhenthi B. Gut microbiome differences between wild and captive black rhinoceros - implications for rhino health. Sci Rep 2019; 9:7570. [PMID: 31138833 PMCID: PMC6538756 DOI: 10.1038/s41598-019-43875-3] [Citation(s) in RCA: 70] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2019] [Accepted: 04/24/2019] [Indexed: 12/20/2022] Open
Abstract
A number of recent studies have shown the importance of the mammalian gut microbiome in host health. In the context of endangered species, a few studies have examined the relationship between the gut microbiome in wild versus captive populations due to digestive and other health issues. Unfortunately, the results seem to vary across taxa in terms of captive animals having higher, lower, or equivalent microbiome diversity relative to their wild counterparts. Here, we focus on the black rhinoceros as captive animals suffer from a number of potentially dietary related health effects. We compared gut microbiomes of wild and captive black rhinos to test for differences in taxonomic diversity (alpha and beta) and in functional diversity of the microbiome. We incorporated a more powerful metagenomic shotgun sequencing approach rather than a targeted amplification of the 16S gene for taxonomic assignment of the microbiome. Our results showed no significant differences in the alpha diversity levels between wild and captive black rhinos, but significant differences in beta diversity. We found that bacterial taxa traditionally associated with ruminant guts of domesticated animals had higher relative abundances in captive rhinos. Our metagenomic sequencing results suggest that unknown gut microbes of wild rhinos are being replaced by those found in conventional human-domesticated livestock. Wild rhinos have significantly different functional bacterial communities compared to their captive counterparts. Functional profiling results showed greater abundance of glycolysis and amino acid synthesis pathways in captive rhino microbiomes, representing an animal receiving sub-optimal nutrition with a readily available source of glucose but possibly an imbalance of necessary macro and micronutrients. Given the differences observed between wild and captive rhino gut microbiomes, we make a number of recommendations for potentially modifying captive gut microbiome to better reflect their wild counterparts and thereby hopefully improve overall rhino health in captivity.
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Affiliation(s)
- Keylie M Gibson
- Computational Biology Institute, The Milken Institute School of Public Health, The George Washington University, Washington, DC, USA
- Department of Biological Sciences, The George Washington University, Washington, DC, USA
| | - Bryan N Nguyen
- Computational Biology Institute, The Milken Institute School of Public Health, The George Washington University, Washington, DC, USA
- Department of Biological Sciences, The George Washington University, Washington, DC, USA
| | - Laura M Neumann
- Department of Environmental and Occupational Health, The Milken Institute School of Public Health, The George Washington University, Washington, DC, USA
| | - Michele Miller
- DST-NRF Centre of Excellence for Biomedical Tuberculosis Research; South African Medical Research Council Centre for Tuberculosis Research; Division of Molecular Biology and Human Genetics, Faculty of Medicine and Health Sciences, Stellenbosch University, Cape Town, South Africa
| | - Peter Buss
- South African National Parks, Veterinary Wildlife Services, Kruger National Park, Skukuza, South Africa
| | - Savel Daniels
- Department of Botany and Zoology, University of Stellenbosch, Private Bag X1, 7602, Matieland, South Africa
| | - Michelle J Ahn
- Computational Biology Institute, The Milken Institute School of Public Health, The George Washington University, Washington, DC, USA
- Department of Biological Sciences, The George Washington University, Washington, DC, USA
| | - Keith A Crandall
- Computational Biology Institute, The Milken Institute School of Public Health, The George Washington University, Washington, DC, USA
- Department of Epidemiology and Biostatistics, The Milken Institute School of Public Health, The George Washington University, Washington, DC, USA
| | - Budhan Pukazhenthi
- Smithsonian's National Zoo and Conservation Biology Institute, Front Royal, VA, USA.
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Barton M, Little HJ, Vaughan-Jones RD, Daniels S, Dashwood MR, Tsui JC. Sidney George Shaw, DPhil (1948-2017). Physiol Res 2018; 67:S27-S35. [PMID: 31774298] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/10/2023] Open
Abstract
On March 4, 2017 at the age of 68, Sidney George Shaw (Sid) unexpectedly died from complications following surgery, only four years after retiring from the University of Bern. Trained in biochemistry at Oxford University, Sid had quickly moved into molecular pharmacology and became a key investigator in the field of enzyme biochemistry, vasoactive peptide research, and receptor signaling. Sid spent half his life in Switzerland, after moving to the University of Bern in 1984. This article, written by his friends and colleagues who knew him and worked with him during different stages of his career, summarizes his life, his passions, and his achievements in biomedical research. It also includes personal memories relating to a dear friend and outstanding scientist whose intellectual curiosity, humility, and honesty will remain an example to us all.
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Affiliation(s)
- M Barton
- Molecular Internal Medicine, University of Zürich, Zürich, Switzerland. , Division of Surgery and Interventional Science, University College London, Royal Free Campus, London, United Kingdom.
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11
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Schröder P, Beckers B, Daniels S, Gnädinger F, Maestri E, Marmiroli N, Mench M, Millan R, Obermeier MM, Oustriere N, Persson T, Poschenrieder C, Rineau F, Rutkowska B, Schmid T, Szulc W, Witters N, Sæbø A. Intensify production, transform biomass to energy and novel goods and protect soils in Europe-A vision how to mobilize marginal lands. Sci Total Environ 2018; 616-617:1101-1123. [PMID: 29132720 DOI: 10.1016/j.scitotenv.2017.10.209] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/25/2017] [Revised: 10/20/2017] [Accepted: 10/20/2017] [Indexed: 05/27/2023]
Abstract
The rapid increase of the world population constantly demands more food production from agricultural soils. This causes conflicts, since at the same time strong interest arises on novel bio-based products from agriculture, and new perspectives for rural landscapes with their valuable ecosystem services. Agriculture is in transition to fulfill these demands. In many countries, conventional farming, influenced by post-war food requirements, has largely been transformed into integrated and sustainable farming. However, since it is estimated that agricultural production systems will have to produce food for a global population that might amount to 9.1 billion by 2050 and over 10 billion by the end of the century, we will require an even smarter use of the available land, including fallow and derelict sites. One of the biggest challenges is to reverse non-sustainable management and land degradation. Innovative technologies and principles have to be applied to characterize marginal lands, explore options for remediation and re-establish productivity. With view to the heterogeneity of agricultural lands, it is more than logical to apply specific crop management and production practices according to soil conditions. Cross-fertilizing with conservation agriculture, such a novel approach will provide (1) increased resource use efficiency by producing more with less (ensuring food security), (2) improved product quality, (3) ameliorated nutritional status in food and feed products, (4) increased sustainability, (5) product traceability and (6) minimized negative environmental impacts notably on biodiversity and ecological functions. A sustainable strategy for future agriculture should concentrate on production of food and fodder, before utilizing bulk fractions for emerging bio-based products and convert residual stage products to compost, biochar and bioenergy. The present position paper discusses recent developments to indicate how to unlock the potentials of marginal land.
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Affiliation(s)
- P Schröder
- Helmholtz Zentrum Muenchen, German Research Center for Environmental Health, GmbH, COMI, Ingolstädter Landstrasse 1, D-85764 Neuherberg, Germany..
| | - B Beckers
- Hasselt University, Agoralaan Gebouw D, B-3590 Diepenbeek, Belgium
| | - S Daniels
- Hasselt University, Agoralaan Gebouw D, B-3590 Diepenbeek, Belgium
| | - F Gnädinger
- Helmholtz Zentrum Muenchen, German Research Center for Environmental Health, GmbH, COMI, Ingolstädter Landstrasse 1, D-85764 Neuherberg, Germany
| | - E Maestri
- University of Parma, Department of Chemistry, Life Sci. Environm. Sustainability, - Parco Area delle Scienze 11A, I-43124 Parma, Italy
| | - N Marmiroli
- University of Parma, Department of Chemistry, Life Sci. Environm. Sustainability, - Parco Area delle Scienze 11A, I-43124 Parma, Italy
| | - M Mench
- UMR BIOGECO INRA 1202, Bordeaux University, France
| | - R Millan
- CIEMAT - Departamento de Medio Ambiente, Avenida Complutense 40, E-28040 Madrid, Spain
| | - M M Obermeier
- Helmholtz Zentrum Muenchen, German Research Center for Environmental Health, GmbH, COMI, Ingolstädter Landstrasse 1, D-85764 Neuherberg, Germany
| | - N Oustriere
- UMR BIOGECO INRA 1202, Bordeaux University, France
| | - T Persson
- NIBIO - Norwegian Institute of Bioeconomy Research, NO-1431 Ås, Norway
| | | | - F Rineau
- Hasselt University, Agoralaan Gebouw D, B-3590 Diepenbeek, Belgium
| | - B Rutkowska
- Warsaw University of Life Sciences - SGGW, 02-787 Warsaw, Poland
| | - T Schmid
- CIEMAT - Departamento de Medio Ambiente, Avenida Complutense 40, E-28040 Madrid, Spain
| | - W Szulc
- Warsaw University of Life Sciences - SGGW, 02-787 Warsaw, Poland
| | - N Witters
- Hasselt University, Agoralaan Gebouw D, B-3590 Diepenbeek, Belgium
| | - A Sæbø
- NIBIO - Norwegian Institute of Bioeconomy Research, NO-1431 Ås, Norway
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Moreno-Martinez D, Binsaleh N, Daniels S, Dempsey-Hibbert N, Jones S. 161 Btk inhibitors: friends or foes? Heart 2017. [DOI: 10.1136/heartjnl-2017-311726.160] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Flynn SP, Monaghan R, Bogan J, McKenna M, Cowley A, Daniels S, Hughes G, Kelleher SM. Controlling wettability of PECVD-deposited dual organosilicon/carboxylic acid films to influence DNA hybridisation assay efficiency. J Mater Chem B 2017; 5:8378-8388. [DOI: 10.1039/c7tb01925d] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Plasma oxidation of Zeonor and deposition of TEOS/AA thin film showing dual layer effect on the surface.
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Affiliation(s)
- S. P. Flynn
- National Centre for Plasma Science and Technology
- Glasnevin
- Dublin 9
- Ireland
- School of Chemistry
| | - R. Monaghan
- National Centre for Plasma Science and Technology
- Glasnevin
- Dublin 9
- Ireland
- Biomedical Diagnostic Institute
| | - J. Bogan
- School of Physical Sciences
- Dublin City University
- Dublin 9
- Ireland
| | - M. McKenna
- National Centre for Plasma Science and Technology
- Glasnevin
- Dublin 9
- Ireland
- Biomedical Diagnostic Institute
| | - A. Cowley
- National Centre for Plasma Science and Technology
- Glasnevin
- Dublin 9
- Ireland
| | - S. Daniels
- National Centre for Plasma Science and Technology
- Glasnevin
- Dublin 9
- Ireland
- Biomedical Diagnostic Institute
| | - G. Hughes
- School of Physical Sciences
- Dublin City University
- Dublin 9
- Ireland
| | - S. M. Kelleher
- National Centre for Plasma Science and Technology
- Glasnevin
- Dublin 9
- Ireland
- School of Chemistry
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Flynn SP, Kelleher SM, Acorn JN, Kurzbuch D, Daniels S, McDonagh C, Clancy E, Smith TJ, Nooney R. Ultrasensitive microarray bioassays using cyanine5 dye-doped silica nanoparticles. Nanotechnology 2016; 27:465501. [PMID: 27749269 DOI: 10.1088/0957-4484/27/46/465501] [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] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Herein we report the use of high brightness Cyanine5-doped silica nanoparticles (NPs) for the detection of antibodies or DNA in microarray bioassays. NP labels showed negligible non-specific binding, greater sensitivity and lower limits of detection when compared to free dye-labelled biomolecules. Moreover, the spotted microarrays used in this study required low NP and antibody concentrations to generate large data sets with improved statistical accuracy. These NPs have significant potential for use in biosensing for disease detection.
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Affiliation(s)
- S P Flynn
- Biomedical Diagnostics Institute, Dublin City University, Glasnevin, Dublin 9, Ireland
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15
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Habib K, Daniels S, Lee M, Proctor V, Saha A. Cost implications and oncological outcomes for laparoscopic versus open surgery for right hemicolectomy. Ann R Coll Surg Engl 2016; 98:212-5. [PMID: 26890838 DOI: 10.1308/rcsann.2016.0065] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [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: 02/04/2023] Open
Abstract
INTRODUCTION Recent studies have suggested that laparoscopic surgery for colorectal resection confers a cost benefit compared with open surgery. These studies have considered a wide range of colorectal operations together rather than focusing on a single procedure. Our study compared direct clinical costs for laparoscopic versus open right hemicolectomy. METHODS Clinicopathological data and cost of treatment for all patients who underwent a right hemicolectomy between 2012 and 2013 were collected. The primary outcome was total cost of treatment. Secondary outcomes were length of stay, operative time and morbidity. The minimum follow-up duration was 12 months. Costs for laparoscopic and open surgery for elective resection alone were compared. Further analyses were performed comparing emergency cases with elective cases and cancer with non-cancer cases. RESULTS There were 83 patients who underwent a right hemicolectomy during the study period and of these, 65 had an elective procedure. The total cost of a laparoscopic procedure was £3,998.12 compared with £3,427.50 for open surgery (p=0.039). The length of stay was shorter for laparoscopic surgery while the cost of an emergency right hemicolectomy was significantly greater than for elective surgery. CONCLUSIONS Although the length of stay for laparoscopic surgery was shorter, this did not translate to a reduction in cost. The cost benefit from a shorter length of stay was offset by a greater cost of consumables. Cost effectiveness analyses should be designed carefully, and they should consider individual operations separately when making healthcare management and funding decisions.
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Affiliation(s)
- K Habib
- Doncaster and Bassetlaw Hospitals NHS Foundation Trust , UK
| | - S Daniels
- Doncaster and Bassetlaw Hospitals NHS Foundation Trust , UK
| | - M Lee
- Doncaster and Bassetlaw Hospitals NHS Foundation Trust , UK
| | - V Proctor
- Doncaster and Bassetlaw Hospitals NHS Foundation Trust , UK
| | - A Saha
- Doncaster and Bassetlaw Hospitals NHS Foundation Trust , UK
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16
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Kelleher SM, Habimana O, Lawler J, O' Reilly B, Daniels S, Casey E, Cowley A. Cicada Wing Surface Topography: An Investigation into the Bactericidal Properties of Nanostructural Features. ACS Appl Mater Interfaces 2016; 8:14966-74. [PMID: 26551558 DOI: 10.1021/acsami.5b08309] [Citation(s) in RCA: 166] [Impact Index Per Article: 20.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Recently, the surface of the wings of the Psaltoda claripennis cicada species has been shown to possess bactericidal properties and it has been suggested that the nanostructure present on the wings was responsible for the bacterial death. We have studied the surface-based nanostructure and bactericidal activity of the wings of three different cicadas (Megapomponia intermedia, Ayuthia spectabile and Cryptotympana aguila) in order to correlate the relationship between the observed surface topographical features and their bactericidal properties. Atomic force microscopy and scanning electron microscopy performed in this study revealed that the tested wing species contained a highly uniform, nanopillar structure on the surface. The bactericidal properties of the cicada wings were investigated by assessing the viability of autofluorescent Pseudomonas fluorescens cells following static adhesion assays and targeted dead/live fluorescence staining through direct microscopic counting methods. These experiments revealed a 20-25% bacterial surface coverage on all tested wing species; however, significant bactericidal properties were observed in the M. intermedia and C. aguila species as revealed by the high dead:live cell ratio on their surfaces. The combined results suggest a strong correlation between the bactericidal properties of the wings and the scale of the nanotopography present on the different wing surfaces.
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Affiliation(s)
| | - O Habimana
- School of Chemical and Bioprocess Engineering, University College Dublin , Belfield, Dublin 4, Ireland
| | | | | | | | - E Casey
- School of Chemical and Bioprocess Engineering, University College Dublin , Belfield, Dublin 4, Ireland
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17
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Lee M, Daniels S, Jackson A, West R, Wild J, Wilson T. Readmission after general surgery (Rages). Int J Surg 2015. [DOI: 10.1016/j.ijsu.2015.07.164] [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: 12/01/2022]
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18
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Kelleher SM, Nooney RI, Flynn SP, Clancy E, Burke M, Daly S, Smith TJ, Daniels S, McDonagh C. Multivalent linkers for improved covalent binding of oligonucleotides to dye-doped silica nanoparticles. Nanotechnology 2015; 26:365703. [PMID: 26294441 DOI: 10.1088/0957-4484/26/36/365703] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
This paper describes the fabrication of oligonucleotide-coated Cy5-doped silica nanoparticles using a combination of multivalent linkers and their use in surface-based DNA sandwich hybridization assays. Dipodal silane is introduced as a means to fabricate amine-coated silica nanoparticles and its advantages compared to monopodal silanes are discussed. The use of dipodal silane in conjunction with three different polymer linkers (oxidized dextran, linear and 8-arm polyethylene glycol (PEG)) to immobilize single-stranded DNA to Cy5-doped nanoparticles is investigated and dynamic light scattering measurements and Fourier transform infrared spectroscopy are used to follow the progression of the functionalization of the nanoparticles. We observe a significant improvement in the binding stability of the single-stranded DNA when the dipodal silane and 8-arm PEG are used in combination, when compared to alternative conjugation strategies. Both 8mer and 22mer oligonucleotides are securely conjugated to the high-brightness nanoparticles and their availability to hybridize with a complementary strand is confirmed using solution-based DNA hybridization experiments. In addition, a full surface-based sandwich assay demonstrates the potential these nanoparticles have in the detection of less than 500 femtomolar of a DNA analogue of micro RNA, miR-451.
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Affiliation(s)
- S M Kelleher
- Biomedical Diagnostics Institute, Dublin City University, Glasnevin, Dublin 9, Ireland
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Taylor F, Viggars A, Daniels S, Danson S, Fisher P, Hatton M, Lee C, Woll P. 50: Outcomes of patients with malignant pleural mesothelioma treated with first line palliative cisplatin and pemetrexed chemotherapy, in South Yorkshire. Lung Cancer 2015. [DOI: 10.1016/s0169-5002(15)50050-0] [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: 10/24/2022]
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20
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Rowinska M, Kelleher SM, Soberon F, Ricco AJ, Daniels S. Fabrication and characterisation of spin coated oxidised PMMA to provide a robust surface for on-chip assays. J Mater Chem B 2015; 3:135-143. [PMID: 32261933 DOI: 10.1039/c4tb01748j] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Smooth, thin PMMA layers have been oxidised using two methods on various surfaces. The longevity of activation and ability of the films to bind and retain biomolecules has been investigated.
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Affiliation(s)
- M. Rowinska
- Biomedical Diagnostics Institute
- Dublin City University
- Dublin 9
- Ireland
| | - S. M. Kelleher
- Biomedical Diagnostics Institute
- Dublin City University
- Dublin 9
- Ireland
| | - F. Soberon
- Biomedical Diagnostics Institute
- Dublin City University
- Dublin 9
- Ireland
| | - A. J. Ricco
- Biomedical Diagnostics Institute
- Dublin City University
- Dublin 9
- Ireland
| | - S. Daniels
- Biomedical Diagnostics Institute
- Dublin City University
- Dublin 9
- Ireland
- National Centre for Plasma Research and Technology
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21
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Raut S, Hamill M, Daniels S, Heath AB. Value assignment to the WHO 3rd International Standard for Blood Coagulation Fibrinogen Plasma (09/264): communication from the SSC of the ISTH. J Thromb Haemost 2014; 12:1754-7. [PMID: 25040011 DOI: 10.1111/jth.12668] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2014] [Accepted: 06/22/2014] [Indexed: 11/29/2022]
Affiliation(s)
- S Raut
- Haemostasis Section, Biotherapeutics Group, National Institute for Biological Standards and Control, Potters Bar, Hertfordshire, UK
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22
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Debruyne P, Johnson P, Pottel L, Daniels S, Greer R, Hodgkinson E, Kelly S, Lycke M, Samol J, Simpson J, Kimber D, Loucaides E, Parmar M, Harvey S. The United Kingdom (Uk) National Cancer Research Network (Ncrn) Chemotherapy and Pharmacy Advisory Service (Cpas): Service Development and Quality Control Experience of Pharmacy Aspects in Clinical Research Protocols. Ann Oncol 2014. [DOI: 10.1093/annonc/mdu353.21] [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: 11/13/2022] Open
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23
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Harii K, Arase S, Tsuboi R, Weng E, Daniels S, VanDenburgh A. Erratum to: Bimatoprost for Eyelash Growth in Japanese Subjects: Two Multicenter Controlled Studies. Aesthetic Plast Surg 2014. [PMCID: PMC4643599 DOI: 10.1007/s00266-014-0390-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- K. Harii
- />Department of Plastic Surgery, Kyorin University, School of Medicine, Tokyo, Japan
| | - S. Arase
- />Health Insurance Naruto Hospital, Tokushima, Japan
| | - R. Tsuboi
- />Department of Dermatology, Tokyo Medical University, Tokyo, Japan
| | - E. Weng
- />Dermatology Clinical Research and Development, Allergan, Inc., Irvine, CA USA
| | - S. Daniels
- />Global Health Outcomes, Strategy and Research, Allergan, Inc., Irvine, CA USA
| | - A. VanDenburgh
- />Dermatology Clinical Research and Development, Allergan, Inc., 2525 Dupont Drive, Mail Stop T1-2N, Irvine, CA 92612 USA
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Baker M, Daniels S, Young P, Tabor G. Investigation of flow through a computationally generated packed column using CFD and Additive Layer Manufacturing. Comput Chem Eng 2014. [DOI: 10.1016/j.compchemeng.2014.04.005] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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25
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O'Connor N, Cahill O, Daniels S, Galvin S, Humphreys H. Cold atmospheric pressure plasma and decontamination. Can it contribute to preventing hospital-acquired infections? J Hosp Infect 2014; 88:59-65. [PMID: 25146226 DOI: 10.1016/j.jhin.2014.06.015] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.3] [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: 11/22/2013] [Accepted: 06/27/2014] [Indexed: 11/28/2022]
Abstract
Healthcare-associated infections (HCAIs) affect ∼4.5 million patients in Europe alone annually. With the ever-increasing number of 'multi-resistant' micro-organisms, alternative and more effective methods of environmental decontamination are being sought as an important component of infection prevention and control. One of these is the use of cold atmospheric pressure plasma (CAPP) systems with clinical applications in healthcare facilities. CAPPs have been shown to demonstrate antimicrobial, antifungal and antiviral properties and have been adopted for other uses in clinical medicine over the past decade. CAPPs vary in their physical and chemical nature depending on the plasma-generating mechanism (e.g. plasma jet, dielectric barrier discharge, etc.). CAPP systems produce a 'cocktail' of species including positive and negative ions, reactive atoms and molecules (e.g. atomic oxygen, ozone, superoxide and oxides of nitrogen), intense electric fields, and ultraviolet radiation (UV). The effects of these ions have been studied on micro-organisms, skin, blood, and DNA; thus, a range of possible applications of CAPPs has been identified, including surface decontamination, wound healing, biofilm removal, and even cancer therapy. Here we evaluate plasma devices, their applications, mode of action and their potential role specifically in combating HCAIs on clinical surfaces.
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Affiliation(s)
- N O'Connor
- National Centre for Plasma Science and Technology, Dublin, Ireland; School of Electronic Engineering, Dublin City University, Dublin, Ireland
| | - O Cahill
- National Centre for Plasma Science and Technology, Dublin, Ireland.
| | - S Daniels
- National Centre for Plasma Science and Technology, Dublin, Ireland; School of Electronic Engineering, Dublin City University, Dublin, Ireland
| | - S Galvin
- Department of Clinical Microbiology, Education and Research Centre, Royal College of Surgeons in Ireland, Dublin, Ireland
| | - H Humphreys
- Department of Clinical Microbiology, Education and Research Centre, Royal College of Surgeons in Ireland, Dublin, Ireland; Department of Microbiology, Beaumont Hospital, Dublin, Ireland
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26
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Seo A, Yuan D, Daniels S, Yuan S, Gallagher M, Wong ECC. Reference intervals for immature platelet fraction and immature platelet count. Int J Lab Hematol 2014; 37:e1-2. [PMID: 24739132 DOI: 10.1111/ijlh.12237] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [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)
- A Seo
- Children's National Health System, Division of Laboratory Medicine, Center for Cancer and Blood Disorders, Sheikh Zayed Campus for Advanced Children's Medicine, Washington, DC, USA; Departments of Pediatrics and Pathology, George Washington School of Medicine and Health Sciences, Washington, DC, USA.
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27
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Sharma S, Gahan D, Kechkar S, Daniels S, Hopkins MB. A spatially resolved retarding field energy analyzer design suitable for uniformity analysis across the surface of a semiconductor wafer. Rev Sci Instrum 2014; 85:043509. [PMID: 24784609 DOI: 10.1063/1.4870900] [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] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
A novel retarding field energy analyzer design capable of measuring the spatial uniformity of the ion energy and ion flux across the surface of a semiconductor wafer is presented. The design consists of 13 individual, compact-sized, analyzers, all of which are multiplexed and controlled by a single acquisition unit. The analyzers were tested to have less than 2% variability from unit to unit due to tight manufacturing tolerances. The main sensor assembly consists of a 300 mm disk to mimic a semiconductor wafer and the plasma sampling orifices of each sensor are flush with disk surface. This device is placed directly on top of the rf biased electrode, at the wafer location, in an industrial capacitively coupled plasma reactor without the need for any modification to the electrode structure. The ion energy distribution, average ion energy, and average ion flux were measured at the 13 locations over the surface of the powered electrode to determine the degree of spatial nonuniformity. The ion energy and ion flux are shown to vary by approximately 20% and 5%, respectively, across the surface of the electrode for the range of conditions investigated in this study.
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Affiliation(s)
- S Sharma
- Impedans Ltd., Unit 8 Woodford Court, Woodford Business Park, Santry, Dublin 17, Ireland
| | - D Gahan
- Impedans Ltd., Unit 8 Woodford Court, Woodford Business Park, Santry, Dublin 17, Ireland
| | - S Kechkar
- National Centre for Plasma Science and Technology, Dublin City University, Glasnevin, Dublin 9, Ireland
| | - S Daniels
- National Centre for Plasma Science and Technology, Dublin City University, Glasnevin, Dublin 9, Ireland
| | - M B Hopkins
- Impedans Ltd., Unit 8 Woodford Court, Woodford Business Park, Santry, Dublin 17, Ireland
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28
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Harii K, Arase S, Tsuboi R, Weng E, Daniels S, VanDenburgh A. Bimatoprost for eyelash growth in Japanese subjects: two multicenter controlled studies. Aesthetic Plast Surg 2014; 38:451-60. [PMID: 24643895 PMCID: PMC4003339 DOI: 10.1007/s00266-014-0293-7] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [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: 11/08/2013] [Accepted: 02/07/2014] [Indexed: 11/29/2022]
Abstract
BACKGROUND Bimatoprost 0.03% has enhanced eyelash prominence in clinical trials enrolling mostly Caucasian subjects. The studies described in this report evaluated the efficacy and safety of bimatoprost in Japanese subjects with idiopathic and chemotherapy-induced eyelash hypotrichosis. METHODS In two multicenter, double-masked, randomized, parallel-group studies (study 1: n=173 [idiopathic]; study 2: n=36 [chemotherapy-induced]), subjects received bimatoprost 0.03% or vehicle applied once daily to the upper eyelid margins. The primary efficacy measure was eyelash prominence measured by Global Eyelash Assessment (GEA) scores. Additional measures were eyelash length, thickness, and darkness, assessed by digital image analysis, and patient satisfaction (Eyelash Satisfaction Questionnaire-9). Safety assessments included adverse-event monitoring and ophthalmic examinations. RESULTS Significantly more bimatoprost-treated subjects had at least a one-grade improvement in GEA score from baseline to month 4 compared with vehicle in study 1 (77.3 vs 17.6%; P<0.001) and study 2 (88.9 vs 27.8%; P<0.001). Bimatoprost-treated subjects had significantly greater increases in eyelash length, thickness, and darkness at the primary time point (month 4 in both studies; all P<0.001, study 1; P≤0.04, study 2). The bimatoprost group showed greater subject satisfaction in both studies. The incidence of adverse events was similar in the two groups. Ophthalmic examination showed slightly greater mean reductions in intraocular pressure (IOP) with bimatoprost than with vehicle, and the reductions were within the normal range for daily IOP fluctuations. CONCLUSION Bimatoprost 0.03% was shown to be effective and safe in these studies of Japanese subjects with eyelash hypotrichosis. LEVEL OF EVIDENCE I This journal requires that authors assign a level of evidence to each article. For a full description of these Evidence-Based Medicine ratings, please refer to the Table of Contents or the online Instructions to Authors www.springer.com/00266 .
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Affiliation(s)
- K. Harii
- Department of Plastic Surgery, Kyorin University School of Medicine, Tokyo, Japan
| | - S. Arase
- Health Insurance Naruto Hospital, Tokushima, Japan
| | - R. Tsuboi
- Department of Dermatology, Tokyo Medical University, Tokyo, Japan
| | - E. Weng
- Dermatology Clinical Research and Development, Allergan, Inc., Irvine, CA USA
| | - S. Daniels
- Global Health Outcomes, Strategy and Research, Allergan, Inc., Irvine, CA USA
| | - A. VanDenburgh
- Dermatology Clinical Research and Development, Allergan, Inc., 2525 Dupont Drive, Mail Stop T1-2N, Irvine, CA 92612 USA
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29
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Rajani KV, Daniels S, McNally PJ, Krishnamurthy S. Soft x-ray spectroscopic investigation of Zn doped CuCl produced by pulsed dc magnetron sputtering. J Phys Condens Matter 2013; 25:285501. [PMID: 23778949 DOI: 10.1088/0953-8984/25/28/285501] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
We report on a systematic investigation of the electronic properties of UV-light emitting Zn doped CuCl thin films implemented using near edge x-ray absorption fine structures (NEXAFS) and high-resolution x-ray photoemission spectroscopy. A clear shift of the valence band maximum towards higher binding energy by 0.2 ± 0.1 eV was observed in Zn doped CuCl as compared to undoped CuCl. This shift is in correlation with the increase in conductivity measured by the Hall effect measurements. A decrease in the optical band gap of CuCl film is also observed as a function of Zn doping. The profound changes in the full width at half maximum and the gradual disappearance of satellite features of Cu 2p core level photoemission as a function of Zn dopant are attributed to the reduced presence of the surface layer of Cu(2+) species with d(9) configuration in the doped films. These investigations help us to understand the doping mechanisms and underlying physics. The reduced presence of the Cu(2+) related surface layer as a function of Zn doping is also verified using NEXAFS.
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Affiliation(s)
- K V Rajani
- National Centre for Plasma Science & Technology, Dublin City University, Dublin 9, Ireland.
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30
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Strand V, Altman R, Daniels S, Manvelian G. AB0598 Nano-formulated lower dose nsaids preferred by patients experiencing acute pain. Ann Rheum Dis 2013. [DOI: 10.1136/annrheumdis-2012-eular.598] [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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31
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Galvin S, Cahill O, O'Connor N, Cafolla A, Daniels S, Humphreys H. The antimicrobial effects of helium and helium-air plasma on Staphylococcus aureus
and Clostridium difficile. Lett Appl Microbiol 2013; 57:83-90. [DOI: 10.1111/lam.12091] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2012] [Revised: 03/12/2013] [Accepted: 04/09/2013] [Indexed: 02/06/2023]
Affiliation(s)
- S. Galvin
- Department of Clinical Microbiology; Education and Research Centre; Royal College of Surgeons in Ireland; Dublin Ireland
| | - O. Cahill
- School of Electronic Engineering and National Centre for Plasma Science Technology; Dublin City University; Dublin Ireland
| | - N. O'Connor
- School of Electronic Engineering and National Centre for Plasma Science Technology; Dublin City University; Dublin Ireland
| | - A.A. Cafolla
- School of Physical Sciences; Dublin City University; Dublin Ireland
| | - S. Daniels
- School of Electronic Engineering and National Centre for Plasma Science Technology; Dublin City University; Dublin Ireland
| | - H. Humphreys
- Department of Clinical Microbiology; Education and Research Centre; Royal College of Surgeons in Ireland; Dublin Ireland
- Department of Microbiology; Beaumont Hospital; Dublin Ireland
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Marcatili S, Pettinato C, Daniels S, Lewis G, Edwards P, Fanti S, Spezi E. Development and validation of RAYDOSE: a Geant4-based application for molecular radiotherapy. Phys Med Biol 2013; 58:2491-508. [PMID: 23514870 DOI: 10.1088/0031-9155/58/8/2491] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
We developed and validated a Monte-Carlo-based application (RAYDOSE) to generate patient-specific 3D dose maps on the basis of pre-treatment imaging studies. A CT DICOM image is used to model patient geometry, while repeated PET scans are employed to assess radionuclide kinetics and distribution at the voxel level. In this work, we describe the structure of this application and present the tests performed to validate it against reference data and experiments. We used the spheres of a NEMA phantom to calculate S values and total doses. The comparison with reference data from OLINDA/EXM showed an agreement within 2% for a sphere size above 2.8 cm diameter. A custom heterogeneous phantom composed of several layers of Perspex and lung equivalent material was used to compare TLD measurements of gamma radiation from (131)I to Monte Carlo simulations. An agreement within 5% was found. RAYDOSE has been validated against reference data and experimental measurements and can be a useful multi-modality platform for treatment planning and research in MRT.
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Affiliation(s)
- S Marcatili
- PET Imaging Center (PETIC), School of Medicine, Cardiff University, Heath Park, CF14 4XN Cardiff, UK.
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Daniels S. Life and the environment. S AFR J SCI 2013. [DOI: 10.1590/sajs.2013/a0018] [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: 11/21/2022] Open
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Raut S, Daniels S, Gärtner P, Hunfeld A, Leitner M, Hockley J, Heath A. Factor VIII Bypassing Activity (FEIBA) assays: standardization and development of the 1st NIBSC Working Standard for FEIBA--results from a collaborative study. Haemophilia 2012; 19:304-9. [PMID: 23174010 DOI: 10.1111/hae.12036] [Citation(s) in RCA: 2] [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] [Accepted: 08/29/2012] [Indexed: 11/30/2022]
Abstract
Factor-Eight-Inhibitor-Bypassing-Activity (FEIBA) is a bypassing-agent used to control spontaneous bleeding or cover surgical interventions in Haemophiliacs who develop neutralizing antibodies against FVIII/FIX. The market lot-release of FEIBA is dependent on specific clot-based assays, carried out by both the manufacturer and regulatory authorities, relative to manufacturer's in-house standards, which are produced on a small-scale and are replaced frequently. We sought to standardize the FEIBA assay by developing a FEIBA primary standard which would be internationally available in sufficiently large quantities, with a predicted lifetime of many years. A collaborative study involving the manufacturer and three regulatory authorities, was carried out in which a candidate material, sample B (06/172), was calibrated by assays relative to the manufacturer's in-house FEIBA standards (C and D). All laboratories used their routine validated methods (16 APTT-assays, 8 ACTIN-FS-assays and 27 DAPTTIN-assays). Intra-laboratory geometric coefficients of variation (GCVs) for candidate B ranged from 3% to 29% (GCVs <9% from majority of labs). Assessment of inter-laboratory variability gave overall GCV values of 6.9% and 4.4% relative to standards C and D, respectively, for all methods. There was good agreement in potency estimation between laboratories using each of the three methods, with the overall potencies by the three methods differing by less than 10% of the overall mean, giving an overall combined potency of 28.0 units per ampoule. All participants agreed that candidate B (06/172) be established as the 1st NIBSC Working Standard for FEIBA with an assigned potency of 28.0 units per ampoule, based on combined results for both methods, relative to either standard C or D.
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Affiliation(s)
- S Raut
- Haemostasis Section, National Institute for Biological Standards and Control, Potters Bar, Hertfordshire, UK.
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Dwarakanath A, Etherington C, Daniels S, Morton A, White H, Peckham D, Conway S. WS13.3 Reduction in prevalence of osteoporosis and osteopenia in adult patients attending a regional UK centre: 2011 vs. 1999. J Cyst Fibros 2012. [DOI: 10.1016/s1569-1993(12)60093-9] [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: 11/16/2022]
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Affiliation(s)
- S Raut
- Haemostasis Section, Biotherapeutics Group; and Biostatistics Section, National Institute for Biological Standards and Control, Potters Bar, UK.
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Christensen K, Daniels S, Bandy D, Ernst C, Hamilton D, Mermelstein F, Gawarecki D, Carr D. 643 DYLOJECT™, A NOVEL INJECTABLE DICLOFENAC: EFFICACY OF UNEXPECTEDLY LOW DOSES AND FASTER ONSET THAN KETOROLAC. Eur J Pain 2012. [DOI: 10.1016/s1090-3801(06)60646-0] [Citation(s) in RCA: 2] [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: 10/23/2022]
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Voua Otomo P, Owojori OJ, Reinecke SA, Daniels S, Reinecke AJ. Using estimates of metal bioavailability in the soil and genetic variation of allozymes to investigate heavy metal tolerance in the earthworm Eisenia fetida (Oligochaeta). Ecotoxicol Environ Saf 2011; 74:2070-2074. [PMID: 21831430 DOI: 10.1016/j.ecoenv.2011.05.014] [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] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/11/2011] [Revised: 05/16/2011] [Accepted: 05/18/2011] [Indexed: 05/31/2023]
Abstract
In a recent study, we showed that the earthworm species Eisenia fetida, inhabiting an extremely high metal polluted compost heap on a wine farm, did not have elevated body loads of the metals but exhibited genotoxic tolerance when exposed to Cd in the laboratory (Voua Otomo and Reinecke, 2010). To unravel the mechanism behind the surprisingly low metal body burdens on one hand and genotoxic tolerance on the other hand, we investigated the estimated bioavailability of these metals (Cu, Zn, Pb and Cd) using sequential extraction methods with CaCl(2) and di-ethylene-triamine-pentaacetic acid (DTPA) and allozyme polymorphism in this field population, a laboratory control as well as a long-term Cd exposed population. The amounts of mobile (extracted with CaCl(2)) and mobilizable (extracted with DTPA) metals in relation to the total (extracted with nitric acid) metals were all below 0.05% for all four metals, suggesting low availability for uptake. The low availability of these metals could not be explained by physico-chemical properties of soil but by the phenomenon of aging of the metals. There was no difference in allozyme frequency between metal tolerant and non-metal tolerant populations of E. fetida. This suggested that the tolerance found in earlier studies could be a mere physiological adaptation.
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Affiliation(s)
- P Voua Otomo
- Department of Botany and Zoology, Stellenbosch University, Private Bag X1, Matieland 7602, South Africa
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Moshin J, Dawson B, Liu H, Daniels S. Fast and sensitive amino acid analysis using aTRAQ™ derivatization and UPLC MS/MS. Clin Biochem 2011. [DOI: 10.1016/j.clinbiochem.2011.06.075] [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: 10/17/2022]
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O'Connor N, Milosavljević V, Daniels S. Development of a real time monitor and multivariate method for long term diagnostics of atmospheric pressure dielectric barrier discharges: application to He, He/N2, and He/O2 discharges. Rev Sci Instrum 2011; 82:083501. [PMID: 21895242 DOI: 10.1063/1.3624743] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
In this paper we present the development and application of a real time atmospheric pressure discharge monitoring diagnostic. The software based diagnostic is designed to extract latent electrical and optical information associated with the operation of an atmospheric pressure dielectric barrier discharge (APDBD) over long time scales. Given that little is known about long term temporal effects in such discharges, the diagnostic methodology is applied to the monitoring of an APDBD in helium and helium with both 0.1% nitrogen and 0.1% oxygen gas admixtures over periods of tens of minutes. Given the large datasets associated with the experiments, it is shown that this process is much expedited through the novel application of multivariate correlations between the electrical and optical parameters of the corresponding chemistries which, in turn, facilitates comparisons between each individual chemistry also. The results of these studies show that the electrical and optical parameters of the discharge in helium and upon the addition of gas admixtures evolve over time scales far longer than the gas residence time and have been compared to current modelling works. It is envisaged that the diagnostic together with the application of multivariate correlations will be applied to rapid system identification and prototyping in both experimental and industrial APDBD systems in the future.
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Affiliation(s)
- N O'Connor
- National Centre for Plasma Science and Technology (NCPST), Dublin City University, Dublin, Ireland.
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Crume TL, Ogden L, West NA, Vehik KS, Scherzinger A, Daniels S, McDuffie R, Bischoff K, Hamman RF, Norris JM, Dabelea D. Association of exposure to diabetes in utero with adiposity and fat distribution in a multiethnic population of youth: the Exploring Perinatal Outcomes among Children (EPOCH) Study. Diabetologia 2011; 54:87-92. [PMID: 20953862 PMCID: PMC3027214 DOI: 10.1007/s00125-010-1925-3] [Citation(s) in RCA: 100] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/08/2010] [Accepted: 09/03/2010] [Indexed: 12/12/2022]
Abstract
AIMS/HYPOTHESIS To evaluate whether exposure to maternal gestational diabetes (GDM) is associated with adiposity and fat distribution in a multiethnic population of children. METHODS Retrospective cohort study of 82 children exposed to maternal GDM and 379 unexposed youths 6-13 years of age with measured BMI, waist circumference, skinfold thickness, and visceral and subcutaneous abdominal fat. RESULTS Exposure to maternal GDM was associated with higher BMI (p = 0.02), larger waist circumference (p = 0.004), more subcutaneous abdominal fat (p = 0.01) and increased subscapular to triceps skinfold thickness ratio (p = 0.01) in models adjusted for age, sex, race/ethnicity and Tanner stage. Adjustment for socioeconomic factors, birthweight and gestational age, maternal smoking during pregnancy and current diet and physical activity did not influence associations; however, adjustment for maternal pre-pregnancy BMI attenuated all associations. CONCLUSIONS/INTERPRETATION Exposure to maternal GDM is associated with increased overall and abdominal adiposity, and a more central fat distribution pattern in 6- to 13-year-old youths from a multi-ethnic population, providing further support for the fetal overnutrition hypothesis.
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Affiliation(s)
- T. L. Crume
- Department of Epidemiology, Colorado School of Public Health, University of Colorado Denver, 13001 East 17th Avenue, Box B119, Room W3110, Aurora, CO 80045, USA
| | - L. Ogden
- Department of Epidemiology, Colorado School of Public Health, University of Colorado Denver, 13001 East 17th Avenue, Box B119, Room W3110, Aurora, CO 80045, USA
| | - N. A. West
- Department of Epidemiology, Colorado School of Public Health, University of Colorado Denver, 13001 East 17th Avenue, Box B119, Room W3110, Aurora, CO 80045, USA
| | - K. S. Vehik
- College of Medicine, Pediatrics Epidemiology Center, University of South Florida, St Petersburg, FL, USA
| | - A. Scherzinger
- Department of Radiology, School of Medicine, University of Colorado Denver, Aurora, CO, USA
| | - S. Daniels
- Department of Pediatrics, School of Medicine, University of Colorado Denver, Aurora, CO, USA
| | - R. McDuffie
- Kaiser Permanente of Colorado, Denver, CO, USA
| | - K. Bischoff
- Kaiser Permanente of Colorado, Denver, CO, USA
| | - R. F. Hamman
- Department of Epidemiology, Colorado School of Public Health, University of Colorado Denver, 13001 East 17th Avenue, Box B119, Room W3110, Aurora, CO 80045, USA
| | - J. M. Norris
- Department of Epidemiology, Colorado School of Public Health, University of Colorado Denver, 13001 East 17th Avenue, Box B119, Room W3110, Aurora, CO 80045, USA
| | - D. Dabelea
- Department of Epidemiology, Colorado School of Public Health, University of Colorado Denver, 13001 East 17th Avenue, Box B119, Room W3110, Aurora, CO 80045, USA
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Braband A, Podsiadlowski L, Cameron SL, Daniels S, Mayer G. Extensive duplication events account for multiple control regions and pseudo-genes in the mitochondrial genome of the velvet worm Metaperipatus inae (Onychophora, Peripatopsidae). Mol Phylogenet Evol 2010; 57:293-300. [DOI: 10.1016/j.ympev.2010.05.012] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2010] [Revised: 05/09/2010] [Accepted: 05/13/2010] [Indexed: 11/30/2022]
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Raut S, Costanzo A, Daniels S, Heath A, Buchheit KH. Calibration of human coagulation factor VIII concentrate Ph. Eur. BRP Batch 4 for use in potency assays. Pharmeur Bio Sci Notes 2010; 2010:1-29. [PMID: 21144486] [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: 05/30/2023]
Abstract
The European Pharmacopoeia Biological Reference Preparation (Ph. Eur. BRP) Batch 4 was established as an international common working standard for potency determination of human coagulation factor VIII (FVIII) preparations to replace the dwindling stocks of the BRP Batch 3, the current European standard. Similarly, stocks of the current World Health Organisation 7th International Standard (WHO 7th IS) were also running low. Therefore a project was jointly organised by the European Directorate for the Quality of Medicines & HealthCare (EDQM, Council of Europe) and the National Institute for Biological Standards and Control (NIBSC, UK) in order to replace both standards concomitantly. The potency of the BRP Batch 4 was assigned during an international collaborative study involving 38 laboratories with reference to the WHO 7th IS and the BRP Batch 3. Four candidate materials, 2 plasma-derived (samples A and C) and 2 recombinant (samples B and D) have been evaluated, sample C being the specific candidate for the replacement of the BRP Batch 3. Participants were instructed to perform 8 independent assays following their own routine validated methods, by either the one-stage clotting assay or the chromogenic assay, or both. Laboratories returned 22 data sets for the clotting assay and 30 data sets for the chromogenic assay. This publication reports the results obtained with both assays but only the results of the chromogenic assay are highlighted in the conclusions, as it is the assay prescribed by the European Pharmacopoeia. Data were analysed separately for both assays. The consensus potency value was calculated as the unweighted geometric mean of the unweighted geometric means of each individual laboratory. For sample C, there was a significant difference in potency estimate between the chromogenic and the clotting assay. It was therefore not possible to reconcile both results. The chromogenic potencies however were in very good agreement being 10.4 IU/ampoule (n = 30), when assessed against both standards. The inter-laboratory geometric coefficient of variation (GCV) was 4.8 % and 7.1 % against the WHO 7th IS and the BRP Batch 3 respectively. The Ph. Eur. BRP Batch 4 is a freeze-dried, plasma-derived concentrate. The material was filled in approximately 20,000 ampoules and lyophilised. The final residual water content is 0.33 %. Based on accelerated degradation studies, the stability of the material is suitable for a reference preparation. The candidate Ph. Eur. BRP Batch 4 was adopted at the 136th session of the European Pharmacopoeia Commission in March 2010. The standard will be available from the EDQM with the catalogue number H0920000 upon exhaustion of the current batch.
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Affiliation(s)
- S Raut
- National Institute for Biological Standards and Control (NIBSC), Health Protection Agency, Potters Bar, EN6 3QG, Hertfordshire, UK
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Gandhiraman R, Gubala V, Nam LCH, Volcke C, Doyle C, James B, Daniels S, Williams D. Deposition of chemically reactive and repellent sites on biosensor chips for reduced non-specific binding. Colloids Surf B Biointerfaces 2010; 79:270-5. [DOI: 10.1016/j.colsurfb.2010.04.009] [Citation(s) in RCA: 21] [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] [Received: 12/19/2009] [Revised: 04/13/2010] [Accepted: 04/14/2010] [Indexed: 10/19/2022]
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Volcke C, Gandhiraman R, Gubala V, Raj J, Cummins T, Fonder G, Nooney R, Mekhalif Z, Herzog G, Daniels S. Reactive amine surfaces for biosensor applications, prepared by plasma-enhanced chemical vapour modification of polyolefin materials. Biosens Bioelectron 2010; 25:1875-80. [DOI: 10.1016/j.bios.2009.12.034] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2009] [Revised: 12/08/2009] [Accepted: 12/29/2009] [Indexed: 10/20/2022]
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Leone-Bay A, Grant M, Greene S, Stowell G, Daniels S, Smithson A, Villanueva S, Cope S, Carrera K, Reyes S, Richardson P. Evaluation of novel particles as an inhalation system for GLP-1. Diabetes Obes Metab 2009; 11:1050-9. [PMID: 19732123 DOI: 10.1111/j.1463-1326.2009.01096.x] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
AIM The feasibility of administering native glucagon-like peptide 1 (GLP-1) as GLP-1 Technosphere Inhalation Powder for diabetes therapy has been demonstrated in a rat model. METHODS GLP-1 Technosphere Inhalation Powders containing 5, 10 and 15% GLP-1 were prepared and administered to healthy female Sprague-Dawley rats and to male Zucker diabetic obese rats. Rats received a single dose of GLP-1 Technosphere Powder by pulmonary insufflation. GLP-1 pharmacokinetic and pharmacodynamic responses were measured. RESULTS Maximum circulating GLP-1 concentrations were achieved at approximately 10 min after dosing with detectable levels at 40 min. In a food consumption study, Sprague-Dawley rats receiving GLP-1 Technosphere Powder once-daily consumed less food than control rats for up to 24 h after dosing. Cumulative food consumption was decreased approximately 10% after 78 h. In an intraperitoneal glucose tolerance test, Zucker diabetic fatty rats receiving 2 mg GLP-1 Technosphere Powder (0.3 mg GLP-1) by pulmonary insufflation exhibited lower glucose concentrations and higher insulin concentrations than control rats. Pancreatic evaluations showed no differences in apoptotic index or cell proliferation of beta-cells. In addition, a dose-related increase in insulin expression within the pancreas was observed. CONCLUSIONS These data demonstrate the feasibility of administering native GLP-1 as GLP-1 Technosphere Inhalation Powder for diabetes therapy.
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Sadler A, Daniels S, Purbrick E. Management of soft tissue facial injuries by maxillofacial registered general nurses. Br J Oral Maxillofac Surg 2008. [DOI: 10.1016/j.bjoms.2008.07.016] [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: 11/17/2022]
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Law VJ, Milosavljević V, O'Connor N, Lalor JF, Daniels S. Handheld Flyback driven coaxial dielectric barrier discharge: Development and characterization. Rev Sci Instrum 2008; 79:094707. [PMID: 19044446 DOI: 10.1063/1.2988833] [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] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
The development of a handheld single and triple chamber atmospheric pressure coaxial dielectric barrier discharge driven by Flyback circuitry for helium and argon discharges is described. The Flyback uses external metal-oxide-semiconductor field-effect transistor power switching technology and the transformer operates in the continuous current mode to convert a continuous dc power of 10-33 W to generate a 1.2-1.6 kV 3.5 micros pulse. An argon discharge breakdown voltage of approximately 768 V is measured. With a 50 kHz, pulse repetition rate and an argon flow rate of 0.5-10 argon slm (slm denotes standard liters per minute), the electrical power density deposited in the volume discharge increases linearly at a rate of 75+/-20% mW/cm(3) per 1 slm of gas. Electrical power transfer efficiency between the secondary Flyback coil and the discharge volume increases from 0.1% to 0.65%. Neutral argon gas forced convection analysis yields a similar energy loss rate to the electrical discharge process. Optical emission spectroscopy studies of the expanding discharge plume into ambient air reveal that the air climatically controls the plume chemistry to produce an abundance of neutral argon atoms and molecular nitrogen.
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Affiliation(s)
- V J Law
- National Center of Plasma Science and Technology (NCPST), Dublin City University, Dublin 9, Ireland
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Oh C, Upmalis D, Okamoto A, Ma Y, Stegmann J, Daniels S. (229) Efficacy of tapentadol immediate release in patients with pain after bunionectomy. The Journal of Pain 2008. [DOI: 10.1016/j.jpain.2008.01.150] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Rosner B, Cook N, Portman R, Daniels S, Falkner B. Determination of blood pressure percentiles in normal-weight children: some methodological issues. Am J Epidemiol 2008; 167:653-66. [PMID: 18230679 DOI: 10.1093/aje/kwm348] [Citation(s) in RCA: 306] [Impact Index Per Article: 19.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Blood pressure in children has consistently been related to adult blood pressure, with implications for long-term prevention of cardiovascular disease. The epidemic of obesity in children has resulted in corresponding increases in childhood blood pressure. In this paper, the authors develop norms for childhood blood pressure among normal-weight children (body mass index <85th percentile based on Centers for Disease Control and Prevention guidelines) as a function of age, sex, and height, using data from 49,967 children included in the database of the National High Blood Pressure Education Program Working Group on High Blood Pressure in Children and Adolescents (the Pediatric Task Force). The authors considered three types of models for pediatric blood pressure data, including polynomial regression, restricted cubic splines, and quantile regression, with the latter providing the best fit. The sex-specific norms presented here are a nonlinear function of both age and height and are generally slightly lower than previously developed norms based on Pediatric Task Force data including both normal-weight and overweight children.
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Affiliation(s)
- B Rosner
- Channing Laboratory, Brigham and Women's Hospital and Harvard Medical School, Boston, MA 02115, USA.
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