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Powell R, Kussaibati R, Baijal S. Optimising management of EGFR mutant NSCLC through circulating tumour DNA (ctDNA) monitoring. Lung Cancer 2019. [DOI: 10.1016/s0169-5002(19)30135-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Powell R, Kussaibati R, Baijal S. Resistance beyond osimertinib. Lung Cancer 2019. [DOI: 10.1016/s0169-5002(19)30133-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Gandhi R, Kussaibati R, Powell R, Baijal S. Efficacy and safety of systemic treatment for older lung cancer patients. Lung Cancer 2019. [DOI: 10.1016/s0169-5002(19)30213-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Britt J, Powell R, McMahan C, Bruce T, Duckett S. PSXV-25 Placental histology using H&E and Ki67 after exposure to ergot alkaloids during mid and late gestation. J Anim Sci 2018. [DOI: 10.1093/jas/sky404.806] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Vasanthan V, Powell R, Aluthman U, Maitland A, Nagendran J, Kent W. OUTCOMES OF STENTLESS BIOPROSTHETIC AORTIC VALVES: THE ALBERTA EXPERIENCE. Can J Cardiol 2018. [DOI: 10.1016/j.cjca.2018.07.237] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022] Open
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Lowrie M, Garden OA, Hadjivassiliou M, Sanders DS, Powell R, Garosi L. Characterization of Paroxysmal Gluten-Sensitive Dyskinesia in Border Terriers Using Serological Markers. J Vet Intern Med 2018; 32:775-781. [PMID: 29424456 PMCID: PMC5866963 DOI: 10.1111/jvim.15038] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2017] [Revised: 11/10/2017] [Accepted: 12/14/2017] [Indexed: 11/27/2022] Open
Abstract
BACKGROUND Paroxysmal gluten-sensitive dyskinesia (PGSD) in border terriers (BTs) results from an immunologic response directed against transglutaminase (TG)2 and gliadin. Recent evidence suggests that PGSD is only one aspect of a range of possible manifestations of gluten sensitivity in the breed. HYPOTHESIS/OBJECTIVES Gluten sensitivity in BTs is a heterogeneous disease process with a diverse clinical spectrum; to characterize the phenotype of PGSD using TG2 and gliadin autoantibodies as diagnostic markers. ANIMALS One hundred twenty-eight client-owned BTs with various disorders. METHODS Prospective study. BTs with paroxysmal episodes and a normal interictal examination were phenotyped using footage of a representative episode and assigned to 3 groups: idiopathic epilepsy (IE), paroxysmal dyskinesia (PD), or other. Owners of each dog completed a questionnaire to obtain information regarding clinical signs. Healthy BTs formed a control group. Serum antibodies against TG2 and AGA were measured in all dogs. RESULTS One hundred twenty-eight BTs were enrolled; 45 with PD, 28 with IE, 35 with other conditions, and 20 controls. Three overlapping phenotypes were identified; PD, signs suggestive of gastrointestinal disease, and dermatopathy. AGA-IgG concentrations were increased in PD, compared with IE (P = 0.012), controls (P < 0.0001) and other (P = 0.018) conditions. Anti-canine TG2-IgA concentrations were increased in PD, compared with IE (P < 0.0001), controls (P < 0.0001) and other (P = 0.012) conditions. Serological markers are highly specific for PGSD but lack sensitivity. CONCLUSIONS PGSD appears part of a syndrome of gluten intolerance consisting of episodes of transient dyskinesia, signs suggestive of gastrointestinal disease, and dermatological hypersensitivity.
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Killeen J, Castillo E, Vilke G, Chan T, Dunford J, Kahn C, Powell R, Sparks J, Pringles J, Chavez D, Branning M. 3 Out-of-Hospital to Emergency Department Data Exchange: A SAFR Transition of Care. Ann Emerg Med 2017. [DOI: 10.1016/j.annemergmed.2017.07.027] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Jonasch E, Fuller G, McCutcheon I, Ding Z, Zhou L, Liu X, Kong W, Powell R, Park IY, Tannir N, Rathmell W, Dong B, Matin S, Tong X, Huang Y, Tong P, Wang J, Walker C, Sun M. The role of hepatocyte nuclear factor 1 homeobox B (HNF1B) loss in chromophobe RCC (ChRCC) development. Ann Oncol 2017. [DOI: 10.1093/annonc/mdx391.022] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Short AK, Yeshurun S, Powell R, Perreau VM, Fox A, Kim JH, Pang TY, Hannan AJ. Exercise alters mouse sperm small noncoding RNAs and induces a transgenerational modification of male offspring conditioned fear and anxiety. Transl Psychiatry 2017; 7:e1114. [PMID: 28463242 PMCID: PMC5534950 DOI: 10.1038/tp.2017.82] [Citation(s) in RCA: 100] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/23/2017] [Accepted: 02/23/2017] [Indexed: 02/07/2023] Open
Abstract
There is growing evidence that the preconceptual lifestyle and other environmental exposures of a father can significantly alter the physiological and behavioral phenotypes of their children. We and others have shown that paternal preconception stress, regardless of whether the stress was experienced during early-life or adulthood, results in offspring with altered anxiety and depression-related behaviors, attributed to hypothalamic-pituitary-adrenal axis dysregulation. The transgenerational response to paternal preconceptual stress is believed to be mediated by sperm-borne small noncoding RNAs, specifically microRNAs. As physical activity confers physical and mental health benefits for the individual, we used a model of voluntary wheel-running and investigated the transgenerational response to paternal exercise. We found that male offspring of runners had suppressed reinstatement of juvenile fear memory, and reduced anxiety in the light-dark apparatus during adulthood. No changes in these affective behaviors were observed in female offspring. We were surprised to find that running had a limited impact on sperm-borne microRNAs. The levels of three unique microRNAs (miR-19b, miR-455 and miR-133a) were found to be altered in the sperm of runners. In addition, we discovered that the levels of two species of tRNA-derived RNAs (tDRs)-tRNA-Gly and tRNA-Pro-were also altered by running. Taken together, we believe this is the first evidence that paternal exercise is associated with an anxiolytic behavioral phenotype of male offspring and altered levels of small noncoding RNAs in sperm. These small noncoding RNAs are known to have an impact on post-transcriptional gene regulation and can thus change the developmental trajectory of offspring brains and associated affective behaviors.
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Leong KS, Titman A, Brown M, Powell R, Moore E, Bowen-Jones D. A retrospective study of seven-day consultant working: reductions in mortality and length of stay. J R Coll Physicians Edinb 2017; 45:261-7. [PMID: 27070886 DOI: 10.4997/jrcpe.2015.402] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
UNLABELLED Weekend admission is associated with higher in-hospital mortality than weekday admission. Whether providing enhanced weekend staffing for acute medical inpatient services reduces mortality or length of stay is unknown. METHODS This paper describes a retrospective analysis of in-hospital mortality and length of stay before and after introduction of an enhanced, consultant-led weekend service in acute medicine in November 2012. In-hospital mortality was compared for matching admission calendar months before and after introduction of the new service, adjusted for case volume. Length of stay and 30-day postdischarge mortality were also compared; illness severity of patients admitted was assessed by cross-sectional acuity audits. RESULTS Admission numbers increased from 6,304 (November 2011-July 2012) to 7,382 (November 2012-July 2013), with no change in acuity score in elderly medical patients but a small fall in younger patients. At the same time, however, a 57% increase in early-warning score triggered calls was seen in 2013 (410 calls vs 262 calls in 2012; p<0.01). Seven-day consultant working was associated with a reduction in in-hospital mortality from 11.4% to 8.8% (p<0.001). Mortality within 30 days of discharge fell from 2.4% to 2.0% (p=0.12). Length of stay fell by 1.9 days (95% CI 1.1-2.7; p=0.004) for elderly medicine wards and by 1.7 days (95% CI 0.8-2.6; p=0.008) for medical wards. Weekend discharges increased from general medical wards (from 13.6% to 18.8%, p<0.001) but did not increase from elderly medicine wards. CONCLUSIONS Introduction of an enhanced, consultant-led model of working at weekends was associated with reduced in-hospital and 30-day post discharge mortality rates as well as reduced length of stay. These results require confirmation in rigorously designed prospective studies.
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Scott FL, Clemons B, Brooks J, Brahmachary E, Powell R, Dedman H, Desale HG, Timony GA, Martinborough E, Rosen H, Roberts E, Boehm MF, Peach RJ. Ozanimod (RPC1063) is a potent sphingosine-1-phosphate receptor-1 (S1P1 ) and receptor-5 (S1P5 ) agonist with autoimmune disease-modifying activity. Br J Pharmacol 2016; 173:1778-92. [PMID: 26990079 DOI: 10.1111/bph.13476] [Citation(s) in RCA: 194] [Impact Index Per Article: 24.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2015] [Revised: 02/18/2016] [Accepted: 02/19/2016] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND AND PURPOSE Sphingosine1-phosphate (S1P) receptors mediate multiple events including lymphocyte trafficking, cardiac function, and endothelial barrier integrity. Stimulation of S1P1 receptors sequesters lymphocyte subsets in peripheral lymphoid organs, preventing their trafficking to inflamed tissue sites, modulating immunity. Targeting S1P receptors for treating autoimmune disease has been established in clinical studies with the non-selective S1P modulator, FTY720 (fingolimod, Gilenya™). The purpose of this study was to assess RPC1063 for its therapeutic utility in autoimmune diseases. EXPERIMENTAL APPROACH The specificity and potency of RPC1063 (ozanimod) was evaluated for all five S1P receptors, and its effect on cell surface S1P1 receptor expression, was characterized in vitro. The oral pharmacokinetic (PK) parameters and pharmacodynamic effects were established in rodents, and its activity in three models of autoimmune disease (experimental autoimmune encephalitis, 2,4,6-trinitrobenzenesulfonic acid colitis and CD4(+) CD45RB(hi) T cell adoptive transfer colitis) was assessed. KEY RESULTS RPC1063 was specific for S1P1 and S1P5 receptors, induced S1P1 receptor internalization and induced a reversible reduction in circulating B and CCR7(+) T lymphocytes in vivo. RPC1063 showed high oral bioavailability and volume of distribution, and a circulatory half-life that supports once daily dosing. Oral RPC1063 reduced inflammation and disease parameters in all three autoimmune disease models. CONCLUSIONS AND IMPLICATIONS S1P receptor selectivity, favourable PK properties and efficacy in three distinct disease models supports the clinical development of RPC1063 for the treatment of relapsing multiple sclerosis and inflammatory bowel disease, differentiates RPC1063 from other S1P receptor agonists, and could result in improved safety outcomes in the clinic.
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Mikucki JA, Lee PA, Ghosh D, Purcell AM, Mitchell AC, Mankoff KD, Fisher AT, Tulaczyk S, Carter S, Siegfried MR, Fricker HA, Hodson T, Coenen J, Powell R, Scherer R, Vick-Majors T, Achberger AA, Christner BC, Tranter M. Subglacial Lake Whillans microbial biogeochemistry: a synthesis of current knowledge. PHILOSOPHICAL TRANSACTIONS. SERIES A, MATHEMATICAL, PHYSICAL, AND ENGINEERING SCIENCES 2016; 374:rsta.2014.0290. [PMID: 26667908 DOI: 10.1098/rsta.2014.0290] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/08/2023]
Abstract
Liquid water occurs below glaciers and ice sheets globally, enabling the existence of an array of aquatic microbial ecosystems. In Antarctica, large subglacial lakes are present beneath hundreds to thousands of metres of ice, and scientific interest in exploring these environments has escalated over the past decade. After years of planning, the first team of scientists and engineers cleanly accessed and retrieved pristine samples from a West Antarctic subglacial lake ecosystem in January 2013. This paper reviews the findings to date on Subglacial Lake Whillans and presents new supporting data on the carbon and energy metabolism of resident microbes. The analysis of water and sediments from the lake revealed a diverse microbial community composed of bacteria and archaea that are close relatives of species known to use reduced N, S or Fe and CH4 as energy sources. The water chemistry of Subglacial Lake Whillans was dominated by weathering products from silicate minerals with a minor influence from seawater. Contributions to water chemistry from microbial sulfide oxidation and carbonation reactions were supported by genomic data. Collectively, these results provide unequivocal evidence that subglacial environments in this region of West Antarctica host active microbial ecosystems that participate in subglacial biogeochemical cycling.
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Lowrie M, Garden OA, Hadjivassiliou M, Harvey RJ, Sanders DS, Powell R, Garosi L. The Clinical and Serological Effect of a Gluten-Free Diet in Border Terriers with Epileptoid Cramping Syndrome. J Vet Intern Med 2015; 29:1564-8. [PMID: 26500168 PMCID: PMC4895653 DOI: 10.1111/jvim.13643] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2015] [Revised: 08/28/2015] [Accepted: 09/15/2015] [Indexed: 11/27/2022] Open
Abstract
Background Canine epileptoid cramping syndrome (CECS) is a paroxysmal movement disorder of Border Terriers (BTs). These dogs might respond to a gluten‐free diet. Objectives The objective of this study was to examine the clinical and serological effect of a gluten‐free diet in BTs with CECS. Animals Six client‐owned BTs with clinically confirmed CECS. Methods Dogs were prospectively recruited that had at least a 6‐month history of CECS based on the observed phenomenology (using video) and had exhibited at least 2 separate episodes on different days. Dogs were tested for anti‐transglutaminase 2 (TG2 IgA) and anti‐gliadin (AGA IgG) antibodies in the serum at presentation, and 3, 6, and 9 months after the introduction of a gluten‐free diet. Duodenal biopsies were performed in 1 dog. Results Serum TG2 IgA titers were increased in 6/6 BTs (P = .006) and AGA IgG titers were increased in 5/6 BTs at presentation compared to those of controls (P = .018). After 9 months, there was clinical and serological improvement in all BTs with CECS strictly adhering to a gluten‐free diet (5/5). One dog had persistently increased antibody titers. This dog scavenged horse manure. On the strict introduction of a gluten‐free diet this dog also had an improved clinical and serological response. The diet‐associated improvement was reversible in 2 dogs on completion of the study, both of which suffered a relapse of CECS on the re‐introduction of gluten. Conclusions Canine epileptoid cramping syndrome in BTs is a gluten‐sensitive movement disorder triggered and perpetuated by gluten and thus responsive to a gluten‐free diet.
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Bose HM, Woodhouse MA, Powell R. Absence of Encephalitozoon cuniculi
antibodies in wild rabbits in England. Vet Rec 2015; 177:48. [DOI: 10.1136/vr.103188] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/29/2015] [Indexed: 11/04/2022]
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Summers KM, Ogden R, Clements DN, French AT, Gow AG, Powell R, Corcoran B, Mellanby RJ, Schoeman JP. Limited genetic divergence between dog breeds from geographically isolated countries. Vet Rec 2014; 175:562. [PMID: 25331973 PMCID: PMC4283627 DOI: 10.1136/vr.102739] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Diamond K, Trovillion D, Allen KE, Malela KM, Noble DA, Powell R, Eifler DA, Gifford ME. Individual (co)variation of field behavior and locomotor performance in curly tailed lizards. J Zool (1987) 2014. [DOI: 10.1111/jzo.12175] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Christner BC, Priscu JC, Achberger AM, Barbante C, Carter SP, Christianson K, Michaud AB, Mikucki JA, Mitchell AC, Skidmore ML, Vick-Majors TJ, Adkins WP, Anandakrishnan S, Barcheck G, Beem L, Behar A, Beitch M, Bolsey R, Branecky C, Edwards R, Fisher A, Fricker HA, Foley N, Guthrie B, Hodson T, Horgan H, Jacobel R, Kelley S, Mankoff KD, McBryan E, Powell R, Purcell A, Sampson D, Scherer R, Sherve J, Siegfried M, Tulaczyk S. A microbial ecosystem beneath the West Antarctic ice sheet. Nature 2014; 512:310-3. [DOI: 10.1038/nature13667] [Citation(s) in RCA: 201] [Impact Index Per Article: 20.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2014] [Accepted: 07/09/2014] [Indexed: 11/09/2022]
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Frowde PE, Gow AG, Burton CA, Powell R, Lipscomb VJ, House AK, Mellanby RJ, Tivers MS. Hepatic hepcidin gene expression in dogs with a congenital portosystemic shunt. J Vet Intern Med 2014; 28:1203-5. [PMID: 24962818 PMCID: PMC4857939 DOI: 10.1111/jvim.12387] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2014] [Revised: 03/19/2014] [Accepted: 04/29/2014] [Indexed: 12/21/2022] Open
Abstract
Background Microcytic anemia is common in dogs with a congenital portosystemic shunt (cPSS) and typically resolves after surgical attenuation of the anomalous vessel. However, the pathophysiology of the microcytic anemia remains poorly understood. Hepcidin has been a key role in controlling iron transport in both humans and animals and in mediating anemia of inflammatory disease in humans. The role of hepcidin in the development of microcytic anemia in dogs with a cPSS has not been examined. Hypothesis To determine whether hepatic hepcidin mRNA expression decreases, while red blood cell count (RBC) and mean corpuscular volume (MCV) increase in dogs after surgical attenuation of a cPSS. Animals Eighteen client‐owned dogs with confirmed cPSS undergoing surgical attenuation. Method Prospective study. Red blood cell count (RBC) and mean corpuscular volume (MCV), together with hepatic gene expression of hepcidin, were measured in dogs before and after partial attenuation of a cPSS. Results There was a significant increase in both RBC (median pre 6.17 × 1012/L, median post 7.08 × 1012/L, P < .001) and MCV (median pre 61.5fl, median post 65.5fl, P = .006) after partial surgical attenuation of the cPSS. Despite the increase in both measured red blood cell parameters, hepatic gene expression of hepcidin remained unchanged. Conclusions and Clinical Importance This study found no evidence that dysregulated production of hepcidin was associated with anemia in dogs with a cPSS.
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Powell R. Editorial: Special Issue - 'Roma Integration in the UK'. PEOPLE, PLACE AND POLICY ONLINE 2014. [DOI: 10.3351/ppp.0008.0001.0001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Kilpatrick S, Jacinto A, Foale RD, Tappin SW, Burton C, Frowde PE, Elwood CM, Powell R, Duncan A, Mellanby RJ, Gow AG. Whole blood manganese concentrations in dogs with primary hepatitis. J Small Anim Pract 2014; 55:241-6. [PMID: 24593275 DOI: 10.1111/jsap.12196] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/11/2014] [Indexed: 12/16/2022]
Abstract
OBJECTIVES Increased whole blood manganese concentrations have been reported in humans with primary liver disease. Due to the neurotoxic effects of manganese, altered manganese homeostasis has been linked to the development of hepatic encephalopathy. Whole blood manganese concentrations are increased in cases of canine congenital portosystemic shunts, but it remains unclear whether dogs with primary hepatopathies also have altered manganese homeostasis. METHODS Whole blood manganese concentrations were measured by graphite furnace atomic absorption spectrometry in 21 dogs with primary hepatitis, 65 dogs with a congenital portosystemic shunt, 31 dogs with non-hepatic illnesses and 18 healthy dogs. RESULTS The whole blood manganese concentrations were significantly different between dogs with primary hepatitis, dogs with non-hepatic illnesses and healthy dogs (P=0·002). Dogs with primary hepatitis had significantly increased whole blood manganese concentrations compared with healthy dogs (P<0·05) and dogs with non-hepatic illnesses (P<0·01). Dogs with primary hepatitis had significantly lower whole blood manganese concentration compared with dogs with congenital portosystemic shunts (P=0·0005). CLINICAL SIGNIFICANCE Dogs with primary hepatopathies have increased concentrations of whole blood manganese although these concentrations are not as high as those in dogs with congenital portosystemic shunts. The role of altered manganese homeostasis in canine hepatic encephalopathy is worthy of further study.
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Armstrong A, Powell C, Powell R, Hallam N, Taylor J, Bird J, Sarran C, Oliver D. Are we seeing the effects of public awareness campaigns? A 10-year analysis of Breslow thickness at presentation of malignant melanoma in the South West of England. J Plast Reconstr Aesthet Surg 2013; 67:324-30. [PMID: 24434052 DOI: 10.1016/j.bjps.2013.12.023] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2013] [Revised: 12/07/2013] [Accepted: 12/20/2013] [Indexed: 11/17/2022]
Abstract
INTRODUCTION The last 20 years has seen a marked improvement in skin cancer awareness campaigns. We sought to establish whether this has affected the presenting Breslow thickness of malignant melanoma in the South West. METHOD This is a retrospective study looking at the first presentation of melanomas from 2003 to 2011. Data was accessed using the local online melanoma database. RESULTS A total of 2001 new melanomas presented from 2003 to 2012 (Male:Female = 1:1.062). The average yearly number of melanomas was 200.1 (range = 138-312). The mean age was 62.5 years (range 12-99). Data was analysed using a Chi² test. For 0-1 mm melanomas, there is a significant difference in the observed versus expected values over the 10 years (p = 0.0018). There is an increasing proportion of 0-1 mm (thin) melanomas presenting year on year, with a positive linear trend. This is very statistically significant (p < 0.0001). The 1-2 mm melanomas are decreasing in proportion with a negative linear trend (p = 0.0013). The 2-4 mm are also decreasing in proportion (p = 0.0253). There is no significant change in the thick >4 mm melanomas (p = 0.1456). CONCLUSION The proportion of thin 0-1 mm melanomas presenting in South West England has significantly increased from 2003 to 2012. There is no significant change in the thick >4 mm melanomas. This may be a result of increased public awareness due to effective public health campaigns which has significant prognostic and financial implications.
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Phillips GN, Powell R. Origin of Witwatersrand gold: a metamorphic devolatilisation–hydrothermal replacement model. ACTA ACUST UNITED AC 2013. [DOI: 10.1179/1743275812y.0000000005] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
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Negm O, McDermott EM, Drewe E, Powell R, Lucy F, Ian T, Tighe P. PW02-019 - Inflammatory pathways activation in TRAPS patients. Pediatr Rheumatol Online J 2013. [PMCID: PMC3953094 DOI: 10.1186/1546-0096-11-s1-a159] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Bonelli S, Thompson P, Yogarajah M, Powell R, Samson R, McEvoy A, Symms M, Koepp M, Duncan J. Imaging memory in temporal lobe epilepsy: reorganisation of verbal and visual memory function following anterior temporal lobe resection. J Neurol Sci 2013. [DOI: 10.1016/j.jns.2013.07.208] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Kaufman I, Pandya S, Powell R, Fredrick J, Bossenberger T, Ramirez E, Yan Y, Solberg T, Burmeister J. Single Fraction Stereotactic Body Radiation Therapy (SBRT) for Spine Metastasis: A Dosimetric Comparison of Multiple Treatment Delivery Systems. Int J Radiat Oncol Biol Phys 2013. [DOI: 10.1016/j.ijrobp.2013.06.1950] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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