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Warford L, Mason C, Lonsdale J, Bersuder P, Blake S, Evans N, Thomas B, James D. A reassessment of TBT action levels for determining the fate of dredged sediments in the United Kingdom. Mar Pollut Bull 2022; 176:113439. [PMID: 35183026 DOI: 10.1016/j.marpolbul.2022.113439] [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] [Subscribe] [Scholar Register] [Received: 10/08/2021] [Revised: 02/04/2022] [Accepted: 02/05/2022] [Indexed: 06/14/2023]
Abstract
As part of reviewing the United Kingdom (UK) action levels (ALs) of contaminants for managing the disposal of dredged marine sediment material, tributyl tin (TBT) has been reassessed. TBT is a banned biocide capable of causing severe harm to the marine environment. Its presence is routinely screened for prior to marine disposal of dredged sediment material. Dredged sediment TBT concentrations have been studied using UK monitoring data obtained between 2000 and 2018. The changes in these TBT concentrations have guided the reassessment of ALs. Recent toxicity studies have also guided the reassessment of TBT ALs. This study, which itself forms part of a larger review by the Department for Environment, Food and Rural Affairs, has concluded that current UK TBT ALs may no longer be fit for purpose. A more environmentally protective approach for controlling release of TBT into the marine environment is recommended.
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Affiliation(s)
- L Warford
- Cefas, Lowestoft, Suffolk NR33 0HT, UK.
| | - C Mason
- Cefas, Lowestoft, Suffolk NR33 0HT, UK
| | | | | | - S Blake
- Cefas, Lowestoft, Suffolk NR33 0HT, UK
| | - N Evans
- Nottingham Trent University, Nottingham NG11 8NS, UK
| | - B Thomas
- Cefas, Lowestoft, Suffolk NR33 0HT, UK
| | - D James
- Cefas, Lowestoft, Suffolk NR33 0HT, UK
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2
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Blake S, de Godoy RF. Kinematics and kinetics of dogs completing jump and A-frame exercises. Comparative Exercise Physiology 2021. [DOI: 10.3920/cep200067] [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: 11/19/2022]
Abstract
Many police dogs do not reach their expected retirement age as they are no longer able to cope with the physical demands of the job. Annual licensing requires police dogs to complete a series of agility tasks, including jumping and negotiating an A-frame obstacle, both of which are associated with higher injury rates in canine agility competitors. This study sought to measure conformational, kinematic, and kinetic parameters of actively employed police German Shepherd Dogs (GSDs), whilst completing a 55 cm jump hurdle, and a standard A-frame. Each dog completed three repetitions of each obstacle and was also recorded at both walk and trot. Contact pressures and forces were measured, whilst joint kinematics were recorded using reflective markers and a high-speed camera. Results found that static hip angle was significantly correlated with hip flexion at trot, during jump suspension and at the apex of the A-frame. Stifle and hock flexion were greatest during the suspension phase of jump (56.98±11.710° and 54.51±17.430°). Shoulder and elbow flexion were greatest at the apex of A-frame (104.34±16.744° and 75.72±20.804°), whilst carpal extension was highest upon landing from the jump (125.77±7.071°). Peak vertical force (PFz) when normalised for body mass (BM) increased when landing from A-frame (14.28 N/kg BM) as opposed to landing from the jump obstacle (12.055 N/kg·BM). Our results show that increased range of motion (ROM) is required during both jumping and negotiation of A-frame compared to walk and trot, but more significantly, greater forces are incurred upon landing from the A-frame than compared to jumping. It was also observed that dogs were subject to high degrees of torsion in the distal limbs upon landing from the A-frame due to trained behaviours. We conclude that use of agility equipment generates greater forces through the musculoskeletal system and requires a greater ROM than what is experienced at walk and trot, which may contribute to early retirement ages in police dogs.
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Affiliation(s)
- S. Blake
- Writtle University College, Lordship Road, Writtle, Chelmsford, CM1 3RR, United Kingdom
| | - R. Ferro de Godoy
- Writtle University College, Lordship Road, Writtle, Chelmsford, CM1 3RR, United Kingdom
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Abstract
Introduction Pi and colleagues reviewed eight case-control studies comparing the oral health (decayed, missing and filled teeth [DMFT], Plaque Index [PI], Gingival Index [GI] and salivary pH) of children with autism (n = 475) to children without autism (n = 565).Method The search strategy involved the use of PubMed, Embase, Web of Science, Cochrane Library, China National Knowledge Infrastructure (CNKI), Wanfang and Chinese Scientific and Technological Journal (VIP) to find case-control studies which met pre-defined inclusion criteria and were published before September 2018. The quality of each study was evaluated using the Newcastle-Ottowa Scale and only high-quality studies were included. Means and standard deviations for outcomes measured by each included study were presented. Data were pooled using the random-effects model via Review Manager 5.3, and presented as mean differences and 95% confidence intervals. Consistency was measured using I2. Sensitivity analysis was performed by removing one study with a large sample to explore effects on heterogeneity.Results The authors found eight eligible case-control studies conducted in Asia (n = 7) or South America (n = 1). Six of the eight compared DMFT of children with autism to those without and three of the eight compared PI, GI and/or salivary pH. While a meta-analysis is presented for each of the oral health outcome areas, there are discrepancies in the reporting. The included studies in each of the meta-analysis do not correspond with the characteristics of the studies provided.Conclusions The authors suggest from their meta-analyses that children with autism experience a higher prevalence of dental disease than children without autism. However, as currently presented, the study lacks internal validity and findings are not reliable.
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Affiliation(s)
- N Thomas
- Faculty of Health, University of Plymouth, UK.
| | - S Blake
- Child Health, University of Exeter Medical School, UK
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Williams M, Blake S, Matthews H. Mitigating the risk of aerosol generation from power tools during the COVID-19 pandemic. Ann R Coll Surg Engl 2020; 102:393-394. [PMID: 32324054 DOI: 10.1308/rcsann.2020.0082] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Affiliation(s)
| | - S Blake
- Torbay Hospital, Torquay, UK
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Hunter A, Blake S, De Godoy RF. Pressure and force on the canine neck when exercised using a collar and leash. Vet Anim Sci 2019; 8:100082. [PMID: 32734099 PMCID: PMC7386734 DOI: 10.1016/j.vas.2019.100082] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [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: 09/05/2019] [Revised: 10/12/2019] [Accepted: 10/23/2019] [Indexed: 12/01/2022] Open
Abstract
A double layer polyester/nylon collar decreased mean contact pressure on the neck when compared to single layer collars. Peak forces were highest under a double layer polyester/nylon collar in all 3 directions of travel – clockwise, anticlockwise and straight. No significant differences between collar material and direction of travel were found when comparing mean contact pressure. Highest forces were identified when a dog walks in an anticlockwise direction away from a handler. Average overall peak force was 30.2 N.
The aim of this study was to assess the pressure and force applied to the canine neck at walk when using collars of different material. Three different collars of equal size but different construction were used. A double-layer polyester and nylon weave (DN), a single layer nylon weave (SN), and a single layer canvas (SC). Eight dogs wore all three types of collar and were led in a randomized order through a course containing straight, clockwise and counterclockwise sections. Force and pressure were measured and recorded using a TekscanⓇ F-Scan In-shoe system and analyzed using SPSS statistical software. Peak force and contact pressure were significantly higher under DN collar when compared with the others (p < 0.0005 and p = 0.001, respectively). Whilst differences in mean force were not observed between collars, there were significant differences depending on the direction of travel of the dog (p < 0.0005), being highest in a counter-clockwise direction, and lowest in a straight line. Peak contact pressure was not significantly different in any condition. Results suggest that collar construction material will alter contact pressures and peak force exerted on the neck, and that a double layer nylon weave collar with ethylene-vinyl acetate cushioning has a higher contact pressure than either a single layer nylon or canvas construction, which may be contrary to an owners expectations when purchasing a collar. Furthermore, forces will vary depending on the direction of travel in relation to the handler.
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Affiliation(s)
- A Hunter
- Writtle University College, Lordship Rd, Writtle, Chelmsford, Essex CM1 3RR, United Kingdom
| | - S Blake
- Writtle University College, Lordship Rd, Writtle, Chelmsford, Essex CM1 3RR, United Kingdom
| | - R Ferro De Godoy
- Writtle University College, Lordship Rd, Writtle, Chelmsford, Essex CM1 3RR, United Kingdom
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Deshpande S, Blake S, Holloway L, Vial P. EP-1791: Evaluation of a water equivalent EPID model for flattening filter free (FFF) beam transit dosimetry. Radiother Oncol 2018. [DOI: 10.1016/s0167-8140(18)32100-5] [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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Ros S, Flöter J, Kaymak I, Da Costa C, Houddane A, Dubuis S, Griffiths B, Mitter R, Walz S, Blake S, Behrens A, Brindle KM, Zamboni N, Rider MH, Schulze A. 6-Phosphofructo-2-kinase/fructose-2,6-biphosphatase 4 is essential for p53-null cancer cells. Oncogene 2017; 36:3287-3299. [PMID: 28092678 DOI: 10.1038/onc.2016.477] [Citation(s) in RCA: 54] [Impact Index Per Article: 7.7] [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] [Received: 07/29/2015] [Revised: 11/08/2016] [Accepted: 11/15/2016] [Indexed: 01/02/2023]
Abstract
The bifunctional enzyme 6-phosphofructo-2-kinase/fructose-2,6-biphosphatase-4 (PFKFB4) controls metabolic flux through allosteric regulation of glycolysis. Here we show that p53 regulates the expression of PFKFB4 and that p53-deficient cancer cells are highly dependent on the function of this enzyme. We found that p53 downregulates PFKFB4 expression by binding to its promoter and mediating transcriptional repression via histone deacetylases. Depletion of PFKFB4 from p53-deficient cancer cells increased levels of the allosteric regulator fructose-2,6-bisphosphate, leading to increased glycolytic activity but decreased routing of metabolites through the oxidative arm of the pentose-phosphate pathway. PFKFB4 was also required to support the synthesis and regeneration of nicotinamide adenine dinucleotide phosphate (NADPH) in p53-deficient cancer cells. Moreover, depletion of PFKFB4-attenuated cellular biosynthetic activity and resulted in the accumulation of reactive oxygen species and cell death in the absence of p53. Finally, silencing of PFKFB4-induced apoptosis in p53-deficient cancer cells in vivo and interfered with tumour growth. These results demonstrate that PFKFB4 is essential to support anabolic metabolism in p53-deficient cancer cells and suggest that inhibition of PFKFB4 could be an effective strategy for cancer treatment.
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Affiliation(s)
- S Ros
- Gene Expression Analysis Laboratory, Cancer Research UK London Research Institute, London, UK
- Cancer Research UK Cambridge Institute, University of Cambridge, Cambridge, UK
| | - J Flöter
- Theodor-Boveri-Institute, Biocenter, Am Hubland, Würzburg, Germany
| | - I Kaymak
- Theodor-Boveri-Institute, Biocenter, Am Hubland, Würzburg, Germany
| | - C Da Costa
- Adult Stem Cell Laboratory, The Francis Crick Institute, London, UK
| | - A Houddane
- Protein Phosphorylation Unit, de Duve Institute, Université Catholique de Louvain, Brussels, Belgium
| | - S Dubuis
- Institute of Molecular Systems Biology, ETH Zurich, Zurich, Switzerland
| | - B Griffiths
- Gene Expression Analysis Laboratory, Cancer Research UK London Research Institute, London, UK
| | - R Mitter
- Bioinformatics and Biostatistics, The Francis Crick Institute, London, UK
| | - S Walz
- Comprehensive Cancer Center, Core Unit Bioinformatics, Biocenter, Würzburg, Germany
| | - S Blake
- Adult Stem Cell Laboratory, The Francis Crick Institute, London, UK
| | - A Behrens
- Adult Stem Cell Laboratory, The Francis Crick Institute, London, UK
- Faculty of Life Sciences and Medicine, King's College London, Guy's Campus, London, UK
| | - K M Brindle
- Cancer Research UK Cambridge Institute, University of Cambridge, Cambridge, UK
| | - N Zamboni
- Institute of Molecular Systems Biology, ETH Zurich, Zurich, Switzerland
| | - M H Rider
- Protein Phosphorylation Unit, de Duve Institute, Université Catholique de Louvain, Brussels, Belgium
| | - A Schulze
- Gene Expression Analysis Laboratory, Cancer Research UK London Research Institute, London, UK
- Theodor-Boveri-Institute, Biocenter, Am Hubland, Würzburg, Germany
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Vial P, Blake S, Cheng Z, Deshpande S, Atakaramians S, Lu M, Meikle S, Greer P, Kuncic Z. PO-0767: Revisiting EPID design for modern radiotherapy requirements. Radiother Oncol 2017. [DOI: 10.1016/s0167-8140(17)31204-5] [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: 11/28/2022]
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Thwaites D, Pogson E, Arumugam S, Hansen C, Currie M, Blake S, Roberts N, Carolan M, Vial P, Juresic J, Ochoa C, Yakobi J, Haman A, Trtovac A, Al-Harthi T, Holloway L. PO-0808: Comparison of multi-institutional QA for VMAT of Nasopharynx with simulated delivery errors. Radiother Oncol 2017. [DOI: 10.1016/s0167-8140(17)31245-8] [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: 10/19/2022]
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Blake S, Petagna C, Hamblin R. ISQUA16-2603HALVING BROKEN HIPS IN HOSPITAL – THE NEW ZEALAND EXPERIENCE. Int J Qual Health Care 2016. [DOI: 10.1093/intqhc/mzw104.3] [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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Abstract
We report the case of a 56-year-old woman with a 7-year history of metastatic cancer who presented with severe copper deficiency following self-treatment with the copper-chelating agent tetrathiomolybdate. This compound was used with the aim of inhibiting tumour angiogenesis and was obtained from the USA by placing an order on the internet. The patient exhibited severe neutropenia as her serum copper concentration fell from 19.8 μmol/L to 3.3 μmol/L and her caeruloplasmin concentration from 35 mg/dL to 4 mg/dL.
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Affiliation(s)
- T F Lang
- Department of Clinical Biochemistry, The John Radcliffe Hospital, Oxford, OX3 9DU, UK.
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12
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Pogson E, Hansen C, Blake S, Arumugam S, Juresic J, Ochoa C, Yakobi J, Haman A, Trtovac A, Holloway L, Thwaites D. SU-D-201-01: A Multi-Institutional Study Quantifying the Impact of Simulated Linear Accelerator VMAT Errors for Nasopharynx. Med Phys 2016. [DOI: 10.1118/1.4955613] [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: 11/07/2022] Open
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13
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Pogson EM, Hansen C, Blake S, Arumugam S, Holloway L, Thwaites D. SU-F-T-384: Step and Shoot IMRT, VMAT and Autoplan VMAT Nasopharnyx Plan Robustness to Linear Accelerator Delivery Errors. Med Phys 2016. [DOI: 10.1118/1.4956569] [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: 11/07/2022] Open
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Smith KS, Kaldor JM, Hocking JS, Jamil MS, McNulty AM, Read P, Bradshaw CS, Chen MY, Fairley CK, Wand H, Worthington K, Blake S, Knight V, Rawlinson W, Saville M, Tabrizi SN, Garland SM, Donovan B, Guy R. The acceptability and cost of a home-based chlamydia retesting strategy: findings from the REACT randomised controlled trial. BMC Public Health 2016; 16:83. [PMID: 26822715 PMCID: PMC4730759 DOI: 10.1186/s12889-016-2727-4] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2015] [Accepted: 01/13/2016] [Indexed: 11/30/2022] Open
Abstract
Background Chlamydia retesting three months after treatment is recommended to detect reinfections, but retesting rates are typically low. The REACT (retest after Chlamydia trachomatis) randomised trial demonstrated that home-based retesting using postal home-collection kits and SMS reminders, resulted in substantial improvements in retesting rates in women, heterosexual men and men who have sex with men (MSM), with detection of more repeat positive tests compared with SMS reminder alone. In the context of this trial, the acceptability of the home-based strategy was evaluated and the costs of the two strategies were compared. Methods REACT participants (200 women, 200 heterosexual men, 200 MSM) were asked to complete an online survey that included home-testing acceptability and preferred methods of retesting. The demographics, sexual behaviour and acceptability of home collection were compared between those preferring home-testing versus clinic-based retesting or no preference, using a chi-square test. The costs to the health system of the clinic-based and home retesting strategies and the cost per infection for each were also compared. Results Overall 445/600 (74 %) participants completed the survey; 236/445 from the home-testing arm, and 141 of these (60 %) retested at home. The majority of home arm retesters were comfortable having the kit posted to their home (86 %); found it easy to follow the instructions and collect the specimens (96 %); were confident they had collected the specimens correctly (90 %); and reported no problems (70 %). Most (65 %) preferred home retesting, 21 % had no preference and 14 % preferred clinic retesting. Comparing those with a preference for home testing to those who didn’t, there were significant differences in being comfortable having a kit sent to their home (p = 0.045); not having been diagnosed with chlamydia previously (p = 0.030); and living with friends (p = 0.034). The overall cost for the home retest pathway was $154 (AUD), compared to $169 for the clinic-based retesting pathway and the cost per repeat infection detected was $1409 vs $3133. Conclusions Among individuals initially diagnosed with chlamydia in a sexual health clinic setting, home-based retesting was shown to be highly acceptable, preferred by most participants, and cost-efficient. However some clients preferred clinic-based testing, often due to confidentiality concerns in their home environment. Both options should be provided to maximise retesting rates. Trial registration The trial was registered with the Australia New Zealand Clinical Trials Registry on September 9, 2011: ACTRN12611000968976. Electronic supplementary material The online version of this article (doi:10.1186/s12889-016-2727-4) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- K S Smith
- The Kirby Institute, UNSW Australia, Sydney, Australia.
| | - J M Kaldor
- The Kirby Institute, UNSW Australia, Sydney, Australia
| | - J S Hocking
- Melbourne School of Population and Global Health, University of Melbourne, Melbourne, Australia
| | - M S Jamil
- The Kirby Institute, UNSW Australia, Sydney, Australia
| | - A M McNulty
- Sydney Sexual Health Centre, Sydney, Australia.,School of Public Health and Community Medicine, UNSW Australia, Sydney, Australia
| | - P Read
- Kirketon Road Centre, Sydney, Australia
| | - C S Bradshaw
- Melbourne Sexual Health Centre, Melbourne, Australia.,Central Clinical School, Monash University, Melbourne, Australia
| | - M Y Chen
- Melbourne Sexual Health Centre, Melbourne, Australia.,Central Clinical School, Monash University, Melbourne, Australia
| | - C K Fairley
- Melbourne Sexual Health Centre, Melbourne, Australia.,Central Clinical School, Monash University, Melbourne, Australia
| | - H Wand
- The Kirby Institute, UNSW Australia, Sydney, Australia
| | - K Worthington
- Melbourne Sexual Health Centre, Melbourne, Australia
| | - S Blake
- Sydney Sexual Health Centre, Sydney, Australia
| | - V Knight
- Sydney Sexual Health Centre, Sydney, Australia
| | - W Rawlinson
- Serology and Virology Division, (SAViD) SEALS Microbiology, Prince of Wales Hospital, Sydney, Australia
| | | | - S N Tabrizi
- Department of Obstetrics and Gynaecology, University of Melbourne, Melbourne, Australia.,Department of Microbiology, Royal Children's Hospital, Melbourne, Australia.,Department of Microbiology and Infectious Diseases, Royal Women's Hospital, Melbourne, Australia.,Murdoch Childrens Research Institute, Melbourne, Australia
| | - S M Garland
- Department of Obstetrics and Gynaecology, University of Melbourne, Melbourne, Australia.,Department of Microbiology, Royal Children's Hospital, Melbourne, Australia.,Department of Microbiology and Infectious Diseases, Royal Women's Hospital, Melbourne, Australia.,Murdoch Childrens Research Institute, Melbourne, Australia
| | - B Donovan
- The Kirby Institute, UNSW Australia, Sydney, Australia
| | - R Guy
- The Kirby Institute, UNSW Australia, Sydney, Australia
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Deshpande S, Blake S, Metcalfe P, Holloway L, Vial P. Incorporating a Water Equivalent EPID into a Radiation Therapy Treatment Planning System for In Vivo Dosimetry. Int J Radiat Oncol Biol Phys 2015. [DOI: 10.1016/j.ijrobp.2015.07.1953] [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: 11/30/2022]
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16
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Amini K, Blake S, Brouard M, Burt MB, Halford E, Lauer A, Slater CS, Lee JWL, Vallance C. Three-dimensional imaging of carbonyl sulfide and ethyl iodide photodissociation using the pixel imaging mass spectrometry camera. Rev Sci Instrum 2015; 86:103113. [PMID: 26520946 DOI: 10.1063/1.4934544] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
The Pixel Imaging Mass Spectrometry (PImMS) camera is used in proof-of-principle three-dimensional imaging experiments on the photodissociation of carbonyl sulfide and ethyl iodide at wavelengths around 230 nm and 245 nm, respectively. Coupling the PImMS camera with DC-sliced velocity-map imaging allows the complete three-dimensional Newton sphere of photofragment ions to be recorded on each laser pump-probe cycle with a timing precision of 12.5 ns, yielding velocity resolutions along the time-of-flight axis of around 6%-9% in the applications presented.
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Affiliation(s)
- K Amini
- The Physical and Theoretical Chemistry Laboratory, The Department of Chemistry, University of Oxford, South Parks Road, Oxford OX1 3QZ, United Kingdom
| | - S Blake
- The Physical and Theoretical Chemistry Laboratory, The Department of Chemistry, University of Oxford, South Parks Road, Oxford OX1 3QZ, United Kingdom
| | - M Brouard
- The Physical and Theoretical Chemistry Laboratory, The Department of Chemistry, University of Oxford, South Parks Road, Oxford OX1 3QZ, United Kingdom
| | - M B Burt
- The Physical and Theoretical Chemistry Laboratory, The Department of Chemistry, University of Oxford, South Parks Road, Oxford OX1 3QZ, United Kingdom
| | - E Halford
- The Physical and Theoretical Chemistry Laboratory, The Department of Chemistry, University of Oxford, South Parks Road, Oxford OX1 3QZ, United Kingdom
| | - A Lauer
- The Physical and Theoretical Chemistry Laboratory, The Department of Chemistry, University of Oxford, South Parks Road, Oxford OX1 3QZ, United Kingdom
| | - C S Slater
- The Physical and Theoretical Chemistry Laboratory, The Department of Chemistry, University of Oxford, South Parks Road, Oxford OX1 3QZ, United Kingdom
| | - J W L Lee
- The Chemistry Research Laboratory, The Department of Chemistry, University of Oxford, 12 Mansfield Road, Oxford OX1 3TA, United Kingdom
| | - C Vallance
- The Chemistry Research Laboratory, The Department of Chemistry, University of Oxford, 12 Mansfield Road, Oxford OX1 3TA, United Kingdom
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Arumugam S, Xing A, Young T, Blake S, Thwaites D, Holloway L. SU-F-BRB-09: Measurement Based Dose-Volume Metrics for the Quality Assurance of VMAT Plans-Are We There Yet? Med Phys 2015. [DOI: 10.1118/1.4925204] [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: 11/07/2022] Open
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18
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Blake S, Hansen C, Deshpande S, Phan P, Franji I, Holloway L, Thwaites D. SU-E-T-370: Evaluating Plan Quality and Dose Delivery Accuracy of Tomotherapy SBRT Treatments for Lung Cancer. Med Phys 2015. [DOI: 10.1118/1.4924731] [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: 11/07/2022] Open
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Blake S, Arumugam S, Holloway L, Vinod S, Ochoa C, Phan P, Thwaites D. EP-1442: Investigating the impact of treatment delivery uncertainties for lung SABR: a pilot study. Radiother Oncol 2015. [DOI: 10.1016/s0167-8140(15)41434-3] [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: 11/26/2022]
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Amin S, Blake S, Kenyon SM, Kennel RC, Lewis EN. A novel combination of DLS-optical microrheology and low frequency Raman spectroscopy to reveal underlying biopolymer self-assembly and gelation mechanisms. J Chem Phys 2014; 141:234201. [DOI: 10.1063/1.4903785] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Blake S, Vial P, Holloway L, Kuncic Z. WE-E-18A-08: Towards a Next-Generation Electronic Portal Device for Simultaneous Imaging and Dose Verification in Radiotherapy. Med Phys 2014. [DOI: 10.1118/1.4889460] [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: 11/07/2022] Open
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22
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Blake S, Fletcher S, Stevens P, Velthuis J, Page R, Hugtenberg R. OC-0509: Early results for a novel IMRT verification system based on an upstream MAPS detector. Radiother Oncol 2014. [DOI: 10.1016/s0167-8140(15)30614-9] [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: 10/23/2022]
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Creel S, Becker MS, Durant SM, M'Soka J, Matandiko W, Dickman AJ, Christianson D, Dröge E, Mweetwa T, Pettorelli N, Rosenblatt E, Schuette P, Woodroffe R, Bashir S, Beudels-Jamar RC, Blake S, Borner M, Breitenmoser C, Broekhuis F, Cozzi G, Davenport TRB, Deutsch J, Dollar L, Dolrenry S, Douglas-Hamilton I, Fitzherbert E, Foley C, Hazzah L, Henschel P, Hilborn R, Hopcraft JGC, Ikanda D, Jacobson A, Joubert B, Joubert D, Kelly MS, Lichtenfeld L, Mace GM, Milanzi J, Mitchell N, Msuha M, Muir R, Nyahongo J, Pimm S, Purchase G, Schenck C, Sillero-Zubiri C, Sinclair ARE, Songorwa AN, Stanley-Price M, Tehou CA, Trout C, Wall J, Wittemyer G, Zimmermann A. Conserving large populations of lions - the argument for fences has holes. Ecol Lett 2013; 16:1413, e1-3. [DOI: 10.1111/ele.12145] [Citation(s) in RCA: 61] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2013] [Revised: 06/03/2013] [Accepted: 06/04/2013] [Indexed: 11/27/2022]
Affiliation(s)
- S. Creel
- Department of Ecology; Conservation Biology and Ecology Program; Montana State University; 310 Lewis Hall Bozeman MT 59717 USA
| | - M. S. Becker
- Department of Ecology; Conservation Biology and Ecology Program; Montana State University; 310 Lewis Hall Bozeman MT 59717 USA
- Zambian Carnivore Programme; Box 80 Mfuwe Eastern Province Zambia
| | - S. M. Durant
- Institute of Zoology; Zoological Society of London; Regents Park London NW1 4RY UK
- Wildlife Conservation Society, Bronx Zoo; 2300 Southern Blvd. Bronx NY 10460 USA
| | - J. M'Soka
- Department of Ecology; Conservation Biology and Ecology Program; Montana State University; 310 Lewis Hall Bozeman MT 59717 USA
- Zambia Wildlife Authority; Private Bag 1 Chilanga Zambia
| | - W. Matandiko
- Department of Ecology; Conservation Biology and Ecology Program; Montana State University; 310 Lewis Hall Bozeman MT 59717 USA
- Zambian Carnivore Programme; Box 80 Mfuwe Eastern Province Zambia
| | - A. J. Dickman
- Wildlife Conservation Research Unit, Department of Zoology; The Recanati-Kaplan Centre; University of Oxford; Tubney House Tubney OX13 5QL UK
| | - D. Christianson
- School of Natural Resources and the Environment; University of Arizona; Tucson AZ 85721 USA
| | - E. Dröge
- Zambian Carnivore Programme; Box 80 Mfuwe Eastern Province Zambia
| | - T. Mweetwa
- Zambian Carnivore Programme; Box 80 Mfuwe Eastern Province Zambia
| | - N. Pettorelli
- Institute of Zoology; Zoological Society of London; Regents Park London NW1 4RY UK
| | - E. Rosenblatt
- Department of Ecology; Conservation Biology and Ecology Program; Montana State University; 310 Lewis Hall Bozeman MT 59717 USA
- Zambian Carnivore Programme; Box 80 Mfuwe Eastern Province Zambia
| | - P. Schuette
- Department of Ecology; Conservation Biology and Ecology Program; Montana State University; 310 Lewis Hall Bozeman MT 59717 USA
- Zambian Carnivore Programme; Box 80 Mfuwe Eastern Province Zambia
| | - R. Woodroffe
- Institute of Zoology; Zoological Society of London; Regents Park London NW1 4RY UK
| | - S. Bashir
- Institute of Zoology; Zoological Society of London; Regents Park London NW1 4RY UK
| | - R. C. Beudels-Jamar
- Royal Belgian Institute of Natural Sciences; 29 Vautier str. Bruxelles 1000 Belgium
- CMS Scientific Council, UNEP/CMS; Hermann-Ehlers-Str. 10 Bonn 53113 Germany
| | - S. Blake
- Max Planck Institute for Ornithology; Whitney R. Harris World Ecology Center; Washington University in St. Louis; St. Louis 63130 USA
| | - M. Borner
- Institute of Biodiversity, Animal Health and Comparative Medicine; University of Glasgow; University Avenue Glasgow G12 8QQ UK
| | - C. Breitenmoser
- IUCN/SSC Cat Specialist Group; c/o KORA, Thunstrasse 31 Muri 3074 Switzerland
| | - F. Broekhuis
- Wildlife Conservation Research Unit, Department of Zoology; The Recanati-Kaplan Centre; University of Oxford; Tubney House Tubney OX13 5QL UK
| | - G. Cozzi
- Institute of Evolutionary Biology and Environmental Studies; Zurich University; Winterthurerstrasse 190 Zürich CH 8057 Switzerland
| | - T. R. B. Davenport
- Wildlife Conservation Society, Tanzania Program; PO Box 922 Zanzibar Tanzania
| | - J. Deutsch
- Wildlife Conservation Society, Bronx Zoo; 2300 Southern Blvd. Bronx NY 10460 USA
| | - L. Dollar
- Big Cats Initiative, National Geographic Society; 1145 17th Street NW Washington DC 20036-4688 USA
- Nicholas School of the Environment; Duke University; Durham North Carolina USA
- Department of Biology; Pfeiffer University; Misenheimer North Carolina 28109 USA
| | - S. Dolrenry
- Lion Guardians; PO Box 15550 Langata 00509 Kenya
| | - I. Douglas-Hamilton
- Save the Elephants; PO Box 54667 Nairobi Kenya
- Department of Zoology; University of Oxford; Oxford OX1 3PS UK
| | - E. Fitzherbert
- Wildlife Conservation Research Unit, Department of Zoology; The Recanati-Kaplan Centre; University of Oxford; Tubney House Tubney OX13 5QL UK
- Chester Zoo; Chester CH2 1LH UK
| | - C. Foley
- Wildlife Conservation Society, Tanzania Program; PO Box 922 Zanzibar Tanzania
| | - L. Hazzah
- Lion Guardians; PO Box 15550 Langata 00509 Kenya
| | - P. Henschel
- Panthera; 8 West 40th Street, 18th Floor New York NY 10018 USA
| | - R. Hilborn
- School of Aquatic and Fishery Sciences; University of Washington; Seattle WA 98195 USA
| | - J. G. C. Hopcraft
- Institute of Biodiversity, Animal Health and Comparative Medicine; University of Glasgow; University Avenue Glasgow G12 8QQ UK
| | - D. Ikanda
- Tanzania Wildlife Research Institute; Box 661 Arusha Tanzania
| | - A. Jacobson
- Institute of Zoology; Zoological Society of London; Regents Park London NW1 4RY UK
| | - B. Joubert
- Big Cats Initiative, National Geographic Society; 1145 17th Street NW Washington DC 20036-4688 USA
| | - D. Joubert
- Big Cats Initiative, National Geographic Society; 1145 17th Street NW Washington DC 20036-4688 USA
| | - M. S. Kelly
- Department of Fish and Wildlife Conservation; Virginia Tech; 146 Cheatham Hall Blacksburg VA 24061-0321 USA
| | - L. Lichtenfeld
- African People & Wildlife Fund; PO Box 624 Bernardsville NJ 07924 USA
| | - G. M. Mace
- Department of Genetics, Evolution and Environment; Centre for Biodiversity and Environment Research; University College London; Gower Street London WC1E 6BT UK
| | - J. Milanzi
- Zambia Wildlife Authority; Private Bag 1 Chilanga Zambia
| | - N. Mitchell
- Wildlife Conservation Society, Bronx Zoo; 2300 Southern Blvd. Bronx NY 10460 USA
- Conservation Programmes, Zoological Society of London; Regents Park London NW1 4RY UK
| | - M. Msuha
- Tanzania Wildlife Research Institute; Box 661 Arusha Tanzania
| | - R. Muir
- Africa Programme, Frankfurt Zoological Society Africa Regional Office; Serengeti National Park; Serengeti Tanzania
| | | | - S. Pimm
- Nicholas School of the Environment; Duke University; Durham North Carolina USA
- Department of Biology; Pfeiffer University; Misenheimer North Carolina 28109 USA
| | - G. Purchase
- Wildlife Conservation Society, Bronx Zoo; 2300 Southern Blvd. Bronx NY 10460 USA
- Conservation Programmes, Zoological Society of London; Regents Park London NW1 4RY UK
| | - C. Schenck
- Frankfurt Zoological Society; Bernhard-Grzimek-Allee 1 Frankfurt 60316 Germany
| | - C. Sillero-Zubiri
- Department of Zoology; IUCN/SSC Canid Specialist Group Wildlife Conservation Research Unit; The Recanati-Kaplan Centre; University of Oxford; Tubney House Tubney OX13 5QL UK
| | - A. R. E. Sinclair
- Beaty Biodiversity Research Centre; University of British Columbia; 6270 University Boulevard Vancouver V6T 1Z4 Canada
| | | | - M. Stanley-Price
- Wildlife Conservation Research Unit, Department of Zoology; The Recanati-Kaplan Centre; University of Oxford; Tubney House Tubney OX13 5QL UK
- IUCN/SSC Species Conservation Planning Sub-committee; Rue Mauverney 28 1196 Gland Switzerland
| | - C. A. Tehou
- Coordonnateur WAP/UNOPS Bénin; B.P. 527 Cotonou, République Bénin
| | - C. Trout
- African People & Wildlife Fund; PO Box 624 Bernardsville NJ 07924 USA
| | - J. Wall
- Laboratory for Advanced Spatial Analysis; Department of Geography; University of British Columbia; 1984 West Mall Vancouver BC V6T 1Z2 Canada
| | - G. Wittemyer
- Fish, Wildlife and Conservation Biology; Colorado State University; Fort Collins Colorado 80523 USA
| | - A. Zimmermann
- Wildlife Conservation Research Unit, Department of Zoology; The Recanati-Kaplan Centre; University of Oxford; Tubney House Tubney OX13 5QL UK
- Chester Zoo; Chester CH2 1LH UK
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Legendre C, Cohen D, Delmas Y, Feldkamp T, Fouque D, Furman R, Gaber O, Greenbaum L, Goodship T, Haller H, Herthelius M, Hourmant M, Licht C, Moulin B, Sheerin N, Trivelli A, Bedrosian CL, Loirat C, Legendre C, Babu S, Cohen D, Delmas Y, Furman R, Gaber O, Greenbaum L, Hourmant M, Jungraithmayr T, Lebranchu Y, Riedl M, Sheerin N, Bedrosian CL, Loirat C, Sheerin N, Legendre C, Greenbaum L, Furman R, Cohen D, Gaber AO, Bedrosian C, Loirat C, Haller H, Licht C, Muus P, Legendre C, Douglas K, Hourmant M, Herthelius M, Trivelli A, Goodship T, Remuzzi G, Bedrosian C, Loirat C, Kourouklaris A, Ioannou K, Athanasiou I, Demetriou K, Panagidou A, Zavros M, Rodriguez C NY, Blasco M, Arcal C, Quintana LF, Rodriguez de Cordoba S, Campistol JM, Bachmann N, Eisenberger T, Decker C, Bolz HJ, Bergmann C, Pesce F, Cox SN, Serino G, De Palma G, Sallustio FP, Schena F, Falchi M, Pieri M, Stefanou C, Zaravinos A, Erguler K, Lapathitis G, Dweep H, Sticht C, Anastasiadou N, Zouvani I, Voskarides K, Gretz N, Deltas CC, Ruiz A, Bonny O, Sallustio F, Serino G, Curci C, Cox S, De Palma G, Schena F, Kemter E, Sklenak S, Aigner B, Wanke R, Kitzler TM, Moskowitz JL, Piret SE, Lhotta K, Tashman A, Velez E, Thakker RV, Kotanko P, Leierer J, Rudnicki M, Perco P, Koppelstaetter C, Mayer G, Sa MJN, Alves S, Storey H, Flinter F, Willems PJ, Carvalho F, Oliveira J, Arsali M, Papazachariou L, Demosthenous P, Lazarou A, Hadjigavriel M, Stavrou C, Yioukkas L, Voskarides K, Deltas C, Zavros M, Pierides A, Arsali M, Demosthenous P, Papazachariou L, Voskarides K, Kkolou M, Hadjigavriel M, Zavros M, Deltas C, Pierides A, Toka HR, Dibartolo S, Lanske B, Brown EM, Pollak MR, Familiari A, Zavan B, Sanna Cherchi S, Fabris A, Cristofaro R, Gambaro G, D'Angelo A, Anglani F, Toka H, Mount D, Pollak M, Curhan G, Sengoge G, Bajari T, Kupczok A, von Haeseler A, Schuster M, Pfaller W, Jennings P, Weltermann A, Blake S, Sunder-Plassmann G, Kerti A, Csohany R, Wagner L, Javorszky E, Maka E, Tulassay T, Tory K, Kingswood J, Nikolskaya N, Mbundi J, Kingswood J, Jozwiak S, Belousova E, Frost M, Kuperman R, Bebin M, Korf B, Flamini R, Kohrman M, Sparagana S, Wu J, Brechenmacher T, Stein K, Bissler J, Franz D, Kingswood J, Zonnenberg B, Frost M, Cheung W, Wang J, Brechenmacher T, Lam D, Bissler J, Budde K, Ivanitskiy L, Sowershaewa E, Krasnova T, Samokhodskaya L, Safarikova M, Jana R, Jitka S, Obeidova L, Kohoutova M, Tesar V, Evrengul H, Ertan P, Serdaroglu E, Yuksel S, Mir S, Yang n Ergon E, Berdeli A, Zawada A, Rogacev K, Rotter B, Winter P, Fliser D, Heine G, Bataille S, Moal V, Berland Y, Daniel L, Rosado C, Bueno E, Fraile P, Lucas C, Garcoa-Cosmes P, Tabernero JM, Gonzalez R, Rosado C, Bueno E, Fraile P, Lucas C, Garcia-Cosmes P, Tabernero JM, Gonzalez R, Silska-Dittmar M, Zaorska K, Malke A, Musielak A, Ostalska-Nowicka D, Zachwieja J, K d r V, Uz E, Yigit A, Altuntas A, Yigit B, Inal S, Uz E, Sezer M, Yilmaz R, Visciano B, Porto C, Acampora E, Russo R, Riccio E, Capuano I, Parenti G, Pisani A, Feriozzi S, Perrin A, West M, Nicholls K, Sunder-Plassmann G, Torras J, Cybulla M, Conti M, Angioi A, Floris M, Melis P, Asunis AM, Piras D, Pani A, Warnock D, Guasch A, Thomas C, Wanner C, Campbell R, Vujkovac B, Okur I, Biberoglu G, Ezgu F, Tumer L, Hasanoglu A, Bicik Z, Akin Y, Mumcuoglu M, Ecder T, Paliouras C, Mattas G, Papagiannis N, Ntetskas G, Lamprianou F, Karvouniaris N, Alivanis P. Genetic diseases and molecular genetics. Nephrol Dial Transplant 2013. [DOI: 10.1093/ndt/gft126] [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: 11/12/2022] Open
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Turner M, Seamark D, Milligan C, Thomas C, Brearley SG, Wang X, Blake S, Payne S. FAMILY CARERS' DELIVERY OF MEDICATIONS FOR THE PERSON DYING AT HOME: PRELIMINARY FINDINGS FROM THE ‘UNPACKING THE HOME’ STUDY. BMJ Support Palliat Care 2013. [DOI: 10.1136/bmjspcare-2013-000453a.5] [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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Blake S, Vial P, Holloway L, McNamara A, Greer P, Kuncic Z. SU-E-I-109: Sensitivity Analysis of an Electronic Portal Imaging Device Monte Carlo Model to Variations in Optical Transport Parameters. Med Phys 2012; 39:3650. [DOI: 10.1118/1.4734826] [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: 11/07/2022] Open
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Turner M, Seamark D, Milligan C, Brearley S, Wang X, Blake S, Payne S. ‘Unpacking the home’ – a social science approach to researching dying at home. BMJ Support Palliat Care 2012. [DOI: 10.1136/bmjspcare-2012-000264.9] [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: 11/04/2022]
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Vial P, Deshpande S, Blake S, McNamara A, Holloway L, Greer P, Kuncic Z. TH-C-BRA-11: First Experiments of a Prototype Device for Simultaneous Imaging and Dose Verification in Radiotherapy. Med Phys 2012. [DOI: 10.1118/1.4736327] [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: 11/07/2022] Open
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Blake S, Vial P, Holloway L, Greer P, Kuncic Z. SU-F-BRA-02: An Investigation Into Optical Photon Transport Effects on Electronic Portal Imaging Performance Using Geant4. Med Phys 2011. [DOI: 10.1118/1.3612869] [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: 11/07/2022] Open
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Tsao M, Blake S, Davidson M, Follwell M, Xu W, Moseley D, Sahgal A. Establishing the Role of VMAT in Treating Complex Primary Brain Cancers. Int J Radiat Oncol Biol Phys 2010. [DOI: 10.1016/j.ijrobp.2010.07.1694] [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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Poole R, Blake S, Buschmann M, Goldring S, Laverty S, Lockwood S, Matyas J, McDougall J, Pritzker K, Rudolphi K, van den Berg W, Yaksh T. Recommendations for the use of preclinical models in the study and treatment of osteoarthritis. Osteoarthritis Cartilage 2010; 18 Suppl 3:S10-6. [PMID: 20864015 DOI: 10.1016/j.joca.2010.05.027] [Citation(s) in RCA: 97] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/11/2010] [Accepted: 05/11/2010] [Indexed: 02/02/2023]
Affiliation(s)
- R Poole
- Canadian Arthritis Network, Canada.
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Batchelar DL, Blake S, Morton GC, Loblaw DA, Chung H. Sci-Sat AM(2): Brachy - 03: Post-Operative CT or Intra-Operative US for Planning Single Fraction Prostate HDR Brachytherapy? The Odette Experience. Med Phys 2010. [DOI: 10.1118/1.3476215] [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: 11/07/2022] Open
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Davidson MTM, Blake S, Mah K. Sci-Sat AM(1): Planning - 03: Volumetric Modulated Arc Therapy (VMAT) Planning Strategies for Treating Target Volumes of Varying Complexity. Med Phys 2010. [DOI: 10.1118/1.3476203] [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: 11/07/2022] Open
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Lee JH, Ort T, Ma K, Picha K, Carton J, Marsters PA, Lohmander LS, Baribaud F, Song XYR, Blake S. Resistin is elevated following traumatic joint injury and causes matrix degradation and release of inflammatory cytokines from articular cartilage in vitro. Osteoarthritis Cartilage 2009; 17:613-20. [PMID: 19095472 DOI: 10.1016/j.joca.2008.08.007] [Citation(s) in RCA: 87] [Impact Index Per Article: 5.8] [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] [Received: 02/01/2008] [Accepted: 08/21/2008] [Indexed: 02/02/2023]
Abstract
OBJECTIVE Resistin is a secreted factor that is elevated in rheumatoid arthritis (RA) and believed to drive joint inflammation in vivo. This study was undertaken to determine if resistin is present in the joint following joint injury and to elucidate the role of resistin in cartilage degradation. METHODS The level of resistin was measured in paired synovial fluid (SF) and serum samples from patients following joint injury (anterior cruciate ligament, ACL or meniscus tear). Localization of resistin was visualized by immunohistochemistry of synovial tissue and cartilage from healthy and OA donors. Mouse and human cartilage cultures were used to assess the effect of resistin on cartilage metabolism. RESULTS In trauma patients, resistin levels declined with increasing time post injury. The resistin levels were highest in samples collected up to 1 week following traumatic injury (SF: 2980 pg/ml, serum: 7901 pg/ml) and lowest in samples collected 6-26 years post injury (SF: 686 pg/ml, serum: 5682 pg/ml). Resistin was shown to be expressed in macrophage-like cells in both healthy and OA synovial tissue. Treatment of mouse cartilage cultures with recombinant resistin led to a dose dependent loss of proteoglycan and induction of inflammatory cytokine and PGE(2) production. Recombinant resistin inhibited proteoglycan synthesis in human cartilage explants. CONCLUSION Resistin is elevated both systemically and locally in the weeks immediately following joint injury and has a direct effect on cartilage matrix turnover and cytokine production. Resistin may play a role in the early stages of trauma-induced OA and may represent a new therapeutic target to slow joint destruction in OA.
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Affiliation(s)
- J H Lee
- Discovery Research, Centocor Research & Development, Radnor, PA 19087, USA
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Bonthapally V, Blake S, Johnson C, Bulot J. Changes in pharmacy students' attitudes and knowledge after an early experiential experience with elder persons. Res Social Adm Pharm 2007. [DOI: 10.1016/j.sapharm.2007.06.003] [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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Blake S, Wright C, Edwards C. An unusual cause of an acutely locked knee. Emerg Med J 2005; 22:588-9. [PMID: 16046768 PMCID: PMC1726871 DOI: 10.1136/emj.2003.012567] [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] [Indexed: 11/03/2022]
Affiliation(s)
- S Blake
- Derriford Hospital, Trauma and Orthopaedic Surgery, Derriford Road, Plymouth PL6 8DH, UK.
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Cutrín JM, Barja JL, Nicholson BL, Bandín I, Blake S, Dopazo CP. Restriction fragment length polymorphisms and sequence analysis: an approach for genotyping infectious pancreatic necrosis virus reference strains and other aquabirnaviruses isolated from northwestern Spain. Appl Environ Microbiol 2004; 70:1059-67. [PMID: 14766589 PMCID: PMC348913 DOI: 10.1128/aem.70.2.1059-1067.2004] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.7] [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: 11/20/2022] Open
Abstract
Reference strains of infectious pancreatic necrosis virus resembling the 10 recognized serotypes and local isolates of aquabirnaviruses isolated in northwestern Spain from reservoirs (mollusks) and from asymptomatic and carrier cultured fish were genotyped by restriction fragment length polymorphism (RFLP) and nucleic acid sequence analyses. The RFLP analysis yielded seven genogroups, each of which was clearly correlated with a serotype. Sequence analysis of the three open reading frames provided quite similar results in terms of genogrouping. Based on the results of this study and in order to unify the two types of assays, we propose placing aquabirnaviruses into six genogroups, four of which can be subdivided into two genotypes based on a two-step restriction analysis. The genotyping corresponds with serotyping as follows: genogroup I includes two genotypes corresponding to serotypes A9 (genotype I.1) and A1 (genotype I.2); genogroup II corresponds to serotype A3; genogroup III includes genotypes III.1 (serotype A2) and III.2 (serotype B1); genogroups IV and V include two genotypes, each corresponding to serotypes A5, A6, A7, and A8 (genotypes IV.1, IV.2, V.1, and V.2, respectively);and genogroup VI corresponds to serotype A4. As expected, most local isolates belonged to genotype III.1 and genogroup II. However, a few local isolates corresponded to the American types of genogroup I. Finally, based on the results of this study and due to its simplicity, the two-step restriction analysis assay is proposed as a method for typing new isolates of aquabirnaviruses, and the results correspond to the results of conventional serotyping.
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Affiliation(s)
- J M Cutrín
- Unidad de Ictiopatología, Instituto de Acuicultura, Departamento de Microbiología y Parasitología, Universidad de Santiago de Compostela, 15782 Santiago de Compostela, Spain.
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Ahne W, Blake S, Essbauer S, Nicholson BL. Characterization of aquabirnaviruses from flounder Pseudopleuronectes americanus and mummichog Fundulus heteroclitus in the Chesapeake Bay, Virginia, USA. Dis Aquat Organ 2003; 56:201-206. [PMID: 14667031 DOI: 10.3354/dao056201] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Viruses were isolated in cell culture from tissue homogenates of flounder Pseudopleuronectes americanus and mummichog Fundulus heteroclitus in the Chesapeake Bay, Virginia, USA. Neutralization and immunofluorescence tests with aquabirnavirus (West Buxton strain)-specific polyclonal antisera indicated that both viruses were aquabirnaviruses belonging to Serogroup A, the most common aquabirnavirus serogroup in the United States. This was confirmed by RT-PCR, with primers targeting the VP3 and VP2 gene of aquabirnaviruses. The VP2-specific RT-PCR cDNA amplification product was sequenced and deduced amino-acid sequences were compared with known sequences of the type strains of the 9 serotypes of aquabirnavirus Serogroup A. This demonstrated that the viruses from both flounder and mummichog belong to aquabirnavirus Genogroup 1. The flounder isolate exhibited deduced amino acid sequence similarities of 98.1% with the Jasper strain of serotype A9, and 97.7% with the West Buxton strain of serotype A1. The isolate from mummichog exhibited deduced amino acid sequence similarities of 99.1% with the West Buxton strain of Serotype A1 and 94.8% with the Jasper isolate of Serotype A9. Similarities of deduced amino acid sequences ranged from 79.9 to 86.9%, with representatives of the other 7 serotypes. This is the first report of an aquabirnavirus from mummichog F. heteroclitus and only the fifth report of an aquabirnavirus from a flounder species.
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Affiliation(s)
- W Ahne
- Institute of Zoology, Fisheries Biology and Fish Diseases, Ludwig Maximilians University of Munich, 80539 Munich, Germany
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Abstract
AbstractSulphurous gases from explosive eruptions have the potential to form stratospheric aerosols and so produce surface cooling on a hemispheric to global scale. However, testing for any correlation between SO2 yield and surface cooling is hampered by instrumental SO2 and temperature measurements being available for time periods that include only a few large eruptions. To overcome this, published dendroclimatological data, satellite (Total Ozone Mapping Spectrometer) data on SO2 emissions, stratospheric optical depth data, and volcanological observations are integrated, revealing several relevant new correlations. First, the efficient conversion of SO2 into stratospheric aerosols occurs when the ratio of plume height to tropopause height is greater than about 1.5. Second, the mass of emitted SO2 correlates well with the mass of erupted magma. The SO2 yield is 0.1 to 1% by mass of magma, irrespective of composition. The best-fit power law (r2=0.67) is mass of SO2 in Mt=1.77(mass of magma in Gt)0.64. Third, of the eruption clouds that are believed to have entered the stratosphere in the period 1400–1994, those with masses <5 Gt magma (DRE <2 km3) appear to have had insignificant effects on Northern Hemisphere summer temperature. The scattered data for eruptions of >10 Gt (>4 km3) magma suggest a mean cooling effect of about 0.35 °C.
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Affiliation(s)
- S. Blake
- Department of Earth Sciences, The Open University
Walton Hall, Milton Keynes, MK7 6AA, UK
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41
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Guy RJ, Blake S, Cripps NP. Restorative proctocolectomy in UK servicemen. J R Nav Med Serv 2002; 87:154-7. [PMID: 11974425] [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: 02/24/2023]
Abstract
OBJECTIVE To investigate the outcome of restorative proctocolectomy (RPC) in UK Servicemen and to determine the compatibility of this procedure with Service life. PATIENTS All Servicemen undergoing restorative proctocolectomy for ulcerative colitis (UC) or familial adenomatous polyposis (FAP) up to December 31st 2000 were identified from Service records. Patients were reviewed by direct or telephone interview. Pouch function, military duties, medical category or reasons for discharge from the Service were recorded. RESULTS Fifteen Servicemen (6 Royal Navy, 6 Army, 3 RAF), mean age 30 years, underwent RPC for UC (14) or FAP (1) with a median follow-up of 74 months. Eight remain in their Service, five of whom carry out full duties and three restricted duties. Of the seven who have left the Services only one was medically unfit to continue due to poor pouch function whilst six left voluntarily to pursue active civilian careers. Fourteen patients have acceptable pouch function; one pouch has been excised for intractable pouchitis. CONCLUSIONS Restorative proctocolectomy is compatible with Service life and most individuals are capable of fulfilling active unrestricted military duties.
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Affiliation(s)
- R J Guy
- Department of Colorectal Surgery, Peterborough District Hospital, Thorpe Road, Peterborough PE3 6DA.
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42
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Stroup GB, Lark MW, Veber DF, Bhattacharyya A, Blake S, Dare LC, Erhard KF, Hoffman SJ, James IE, Marquis RW, Ru Y, Vasko-Moser JA, Smith BR, Tomaszek T, Gowen M. Potent and selective inhibition of human cathepsin K leads to inhibition of bone resorption in vivo in a nonhuman primate. J Bone Miner Res 2001; 16:1739-46. [PMID: 11585335 DOI: 10.1359/jbmr.2001.16.10.1739] [Citation(s) in RCA: 128] [Impact Index Per Article: 5.6] [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: 11/18/2022]
Abstract
Cathepsin K is a cysteine protease that plays an essential role in osteoclast-mediated degradation of the organic matrix of bone. Knockout of the enzyme in mice, as well as lack of functional enzyme in the human condition pycnodysostosis, results in osteopetrosis. These results suggests that inhibition of the human enzyme may provide protection from bone loss in states of elevated bone turnover, such as postmenopausal osteoporosis. To test this theory, we have produced a small molecule inhibitor of human cathepsin K, SB-357114, that potently and selectively inhibits this enzyme (Ki = 0.16 nM). This compound potently inhibited cathepsin activity in situ, in human osteoclasts (inhibitor concentration [IC]50 = 70 nM) as well as bone resorption mediated by human osteoclasts in vitro (IC50 = 29 nM). Using SB-357114, we evaluated the effect of inhibition of cathepsin K on bone resorption in vivo using a nonhuman primate model of postmenopausal bone loss in which the active form of cathepsin K is identical to the human orthologue. A gonadotropin-releasing hormone agonist (GnRHa) was used to render cynomolgus monkeys estrogen deficient, which led to an increase in bone turnover. Treatment with SB-357114 (12 mg/kg subcutaneously) resulted in a significant reduction in serum markers of bone resorption relative to untreated controls. The effect was observed 1.5 h after the first dose and was maintained for 24 h. After 5 days of dosing, the reductions in N-terminal telopeptides (NTx) and C-terminal telopeptides (CTx) of type I collagen were 61% and 67%, respectively. A decrease in serum osteocalcin of 22% was also observed. These data show that inhibition of cathepsin K results in a significant reduction of bone resorption in vivo and provide further evidence that this may be a viable approach to the treatment of postmenopausal osteoporosis.
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Affiliation(s)
- G B Stroup
- Department of Bone and Cartilage Biology, SmithKline Beecham Pharmaceuticals, King of Prussia, Pennsylvania 19406, USA
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43
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Abstract
This paper presents results from a process evaluation conducted by the New Jersey Department of Education (NJDOE). Representative samples of middle and high school superintendents, principals, lead health teachers, and HIV teachers provided information assessing whether local district policy content was consistent with the state's policy code, the dynamics of local policy development, and school district staff perceptions and practices regarding HIV education policies. NJDOE also was interested in determining: if inservice training was accessible to teachers assigned to provide HIV education; the scope and impact of HIV inservice programs; and the training needs of staff assigned to teach the HIV curriculum. Finally, NJDOE was interested in determining: local curricula scope, sequence, and approach; the extent to which local curricula were skills-based; and local expectations for instructional outcomes. As a result of the evaluation, program staff identified areas needing remediation and planned for program improvement in new areas.
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Affiliation(s)
- D K Lohrmann
- George Washington University School of Public Health and Health Services, Institute for Mental Health Initiatives, 2175 K St., NW, Suite 700, Washington, DC 20037, USA.
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44
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Blake S, Ma JY, Caporale DA, Jairath S, Nicholson BL. Phylogenetic relationships of aquatic birnaviruses based on deduced amino acid sequences of genome segment A cDNA. Dis Aquat Organ 2001; 45:89-102. [PMID: 11463106 DOI: 10.3354/dao045089] [Citation(s) in RCA: 40] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Aquatic birnaviruses, such as infectious pancreatic necrosis virus (IPNV), cause serious diseases in a variety of fish species used worldwide in aquaculture and have also been isolated from a variety of healthy fish and shellfish species. These viruses exhibit a high degree of antigenic heterogeneity and variation in biological properties such as pathogenicity, host range, and temperature of replication. To better understand genetic and biological diversity among these viruses, the nucleotide and deduced amino acid sequences were determined from cDNA of the large open reading frame (ORF) of genome segment A of the 9 type strains of Serogroup A and 4 other representative strains of Serotype A1, the predominant serotype in the United States. In addition, nucleotide and deduced amino acid sequences were determined for the VP2 coding region of a variety of isolates representing 5 of the 9 serotypes. VP2 is the major outer capsid protein of aquatic birnaviruses. RT-PCR was used to amplify a 2904 bp cDNA fragment including all but a few bp of the large ORF of genome segment A or a 1611 bp fragment representing the entire VP2 coding region. Nucleotide and deduced amino acid sequences were determined from the PCR products. Pairwise comparisons were made among our data and 2 other aquatic birnavirus sequences previously published. Several hypervariable regions were identified within the large ORF. The most divergent pair of viruses exhibited a similarity of 80.1% in the deduced amino acid sequence encoded by the large ORF. Genomic relationships revealed in a phylogenetic tree constructed from comparison of the deduced amino acid sequences of the large ORF demonstrated that these viruses were clustered into several genogroups. Phylogenetic comparison of the deduced amino acid sequences of the VP2 coding region of 28 aquatic birnavirus isolates, including the type strains of all 9 serotypes, demonstrated 6 genogroups, some of which were comprised of several genotypes. The most divergent pair of viruses exhibited a similarity of 81.2% in the deduced amino acid sequence from the VP2 coding region. In contrast to previous studies of much shorter genomic sequences within the C-terminus-pVP2/NS junction coding region, these genogroups based on the entire large ORF or the VP2 coding region generally correlated with geographical origin and serological classification. Isolates from the major Canadian serotypes were more closely related to the European isolates than to isolates from the United States.
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Affiliation(s)
- S Blake
- Department of Biochemistry, Microbiology and Molecular Biology, University of Maine, Orono 04469, USA
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45
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Marquis RW, Ru Y, LoCastro SM, Zeng J, Yamashita DS, Oh HJ, Erhard KF, Davis LD, Tomaszek TA, Tew D, Salyers K, Proksch J, Ward K, Smith B, Levy M, Cummings MD, Haltiwanger RC, Trescher G, Wang B, Hemling ME, Quinn CJ, Cheng HY, Lin F, Smith WW, Janson CA, Zhao B, McQueney MS, D'Alessio K, Lee CP, Marzulli A, Dodds RA, Blake S, Hwang SM, James IE, Gress CJ, Bradley BR, Lark MW, Gowen M, Veber DF. Azepanone-based inhibitors of human and rat cathepsin K. J Med Chem 2001; 44:1380-95. [PMID: 11311061 DOI: 10.1021/jm000481x] [Citation(s) in RCA: 92] [Impact Index Per Article: 4.0] [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: 11/29/2022]
Abstract
The synthesis, in vitro activities, and pharmacokinetics of a series of azepanone-based inhibitors of the cysteine protease cathepsin K (EC 3.4.22.38) are described. These compounds show improved configurational stability of the C-4 diastereomeric center relative to the previously published five- and six-membered ring ketone-based inhibitor series. Studies in this series have led to the identification of 20, a potent, selective inhibitor of human cathepsin K (K(i) = 0.16 nM) as well as 24, a potent inhibitor of both human (K(i) = 0.0048 nM) and rat (K(i,app) = 4.8 nM) cathepsin K. Small-molecule X-ray crystallographic analysis of 20 established the C-4 S stereochemistry as being critical for potent inhibition and that unbound 20 adopted the expected equatorial conformation for the C-4 substituent. Molecular modeling studies predicted the higher energy axial orientation at C-4 of 20 when bound within the active site of cathepsin K, a feature subsequently confirmed by X-ray crystallography. Pharmacokinetic studies in the rat show 20 to be 42% orally bioavailable. Comparison of the transport of the cyclic and acyclic analogues through CaCo-2 cells suggests that oral bioavailability of the acyclic derivatives is limited by a P-glycoprotein-mediated efflux mechanism. It is concluded that the introduction of a conformational constraint has served the dual purpose of increasing inhibitor potency by locking in a bioactive conformation as well as locking out available conformations which may serve as substrates for enzyme systems that limit oral bioavailability.
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Affiliation(s)
- R W Marquis
- Department of Medicinal Chemistry, GlaxoSmithKline, 709 Swedeland Road, King of Prussia, Pennsylvania 19406, USA.
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Winsor K, Blake S, Pyne L, Juers A. The Innovative Ward Project: promoting innovation in health service delivery. AUST HEALTH REV 2001; 23:151-9. [PMID: 11256262] [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: 02/19/2023]
Abstract
An Innovative Ward Project was undertaken as part of the planning for redevelopment of the Princess Alexandra Hospital. Two inpatient units (one medical and one surgical) became pilot areas for developing, implementing and evaluating innovative approaches to service delivery. The project focused on the key areas related to structural environment, information technology and redesign of work practices. This paper provides an overview which includes the key elements utilised to foster innovation. The challenges of disseminating and adopting successful innovations beyond the Innovative Wards are discussed.
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Affiliation(s)
- K Winsor
- Colorectal/Thoracic Unit, Princess Alexandra Hospital, Brisbane
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Badger AM, Blake S, Kapadia R, Sarkar S, Levin J, Swift BA, Hoffman SJ, Stroup GB, Miller WH, Gowen M, Lark MW. Disease-modifying activity of SB 273005, an orally active, nonpeptide alphavbeta3 (vitronectin receptor) antagonist, in rat adjuvant-induced arthritis. Arthritis Rheum 2001; 44:128-37. [PMID: 11212150 DOI: 10.1002/1529-0131(200101)44:1<128::aid-anr17>3.0.co;2-m] [Citation(s) in RCA: 59] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
OBJECTIVE To evaluate the effects of SB 273005, a potent, orally active nonpeptide antagonist of the integrin avbeta3 vitronectin receptor, on joint integrity in rats with adjuvant-induced arthritis (AIA). METHODS Male Lewis rats with AIA were orally dosed either prophylactically (days 0-20) or therapeutically (days 10-20) with SB 273005. Efficacy was determined by measurement of paw inflammation, assessment of bone mineral density using dual-energy x-ray absorptiometry (DEXA), magnetic resonance imaging (MRI), and histologic evaluation. RESULTS SB 273005 is a potent antagonist of the closely related integrins, avbeta3 (Ki = 1.2 nM) and alphavbeta5 (Ki = 0.3 nM). When SB 273005 was administered prophylactically to AIA rats twice per day, it inhibited paw edema at doses of 10, 30, and 60 mg/kg, by 40%, 50%, and 52%, respectively. Therapeutic administration twice daily was also effective, and a reduction in paw edema was observed at 30 mg/kg and 60 mg/kg of the antagonist (by 36% and 48%, respectively). SB 273005 was also effective when administered once per day, both prophylactically and therapeutically. Significant improvement in joint integrity in treated rats was shown using DEXA and MRI analyses. These findings were confirmed histologically, and significant protection of bone, cartilage, and soft tissue was observed within the joint. CONCLUSION Symptoms of AIA in rats were significantly reduced by either prophylactic or therapeutic treatment with the alphavbeta3 antagonist, SB 273005. Measurements of paw inflammation and of bone, cartilage, and soft tissue structure indicated that this compound exerts a protective effect on joint integrity and thus appears to have disease-modifying properties.
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Affiliation(s)
- A M Badger
- SmithKline Beecham Pharmaceuticals, King of Prussia, Pennsylvania 19406, USA
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48
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Blake S, Morii H. American Society for Bone and Mineral Research--22nd Annual Meeting. IDrugs 2000; 3:1447-50. [PMID: 16037854] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Affiliation(s)
- S Blake
- Department of Bone and Cartilage Biology, SmithKline Beecham Pharmaceuticals, UW2109, King of Prussia, PA 19406, USA.
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49
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Affiliation(s)
- R Prinjha
- Department of Neuroscience Research, SmithKline Beecham Pharmaceuticals, Harlow, Essex, UK
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50
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Badger AM, Griswold DE, Kapadia R, Blake S, Swift BA, Hoffman SJ, Stroup GB, Webb E, Rieman DJ, Gowen M, Boehm JC, Adams JL, Lee JC. Disease-modifying activity of SB 242235, a selective inhibitor of p38 mitogen-activated protein kinase, in rat adjuvant-induced arthritis. Arthritis Rheum 2000; 43:175-83. [PMID: 10643714 DOI: 10.1002/1529-0131(200001)43:1<175::aid-anr22>3.0.co;2-s] [Citation(s) in RCA: 184] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
OBJECTIVE To evaluate the effects of SB 242235, a potent and selective inhibitor of p38 mitogen-activated protein (MAP) kinase, on joint integrity in rats with adjuvant-induced arthritis (AIA). METHODS Male Lewis rats with AIA were orally treated either prophylactically (days 0-20) or therapeutically (days 10-20) with SB 242235. Efficacy was determined by measurements of paw inflammation, dual-energy x-ray absorptiometry for bone-mineral density (BMD), magnetic resonance imaging (MRI), microcomputed tomography (CT), and histologic evaluation. Serum tumor necrosis factor alpha (TNFalpha) in normal (non-AIA) rats and serum interleukin-6 (IL-6) levels in rats with AIA were measured as markers of the antiinflammatory effects of the compound. RESULTS SB 242235 inhibited lipopolysaccharide-stimulated serum levels of TNFalpha in normal rats, with a median effective dose of 3.99 mg/kg. When SB 242235 was administered to AIA rats prophylactically on days 0-20, it inhibited paw edema at 30 mg/kg and 10 mg/kg per day by 56% and 33%, respectively. Therapeutic administration on days 10-20 was also effective, and inhibition of paw edema was observed at 60, 30, and 10 mg/kg (73%, 51%, and 19%, respectively). Significant improvement in joint integrity was demonstrated by showing normalization of BMD and also by MRI and micro-CT analysis. Protection of bone, cartilage, and soft tissues was also shown histologically. Serum IL-6 levels were decreased in AIA rats treated with the 60 mg/kg dose of compound. CONCLUSION Symptoms of AIA in rats were significantly reduced by both prophylactic and therapeutic treatment with the p38 MAP kinase inhibitor, SB 242235. Results from measurements of paw inflammation, assessment of BMD, MRI, and micro-CT indicate that this compound exerts a protective effect on joint integrity, and thus appears to have disease-modifying properties.
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Affiliation(s)
- A M Badger
- SmithKline Beecham Pharmaceuticals, King of Prussia, Pennsylvania 19406, USA
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