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Mahon J, McCarthy C, Sheridan G, Cashman J, O'Byrne J, Kenny P. 324 Outcomes of the Exeter V40 Cemented Femoral Stem at a Minimum of 10 Years in a Non-designer Centre. Br J Surg 2021. [DOI: 10.1093/bjs/znab134.258] [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: 11/13/2022]
Abstract
Abstract
Introduction
The Exeter V40 cemented femoral stem was first introduced in 2000. The largest single-centre analysis of this implant to date was published in 2018, with excellent results at a minimum of 10-years for the first 540 cases performed at the designer centre in the Exeter NHS Trust. The aim of this current study is to report long term outcomes and survivorship for the Exeter V40 stem in a non-designer centre.
Method
All patients undergoing primary total hip arthroplasty using the Exeter V40 femoral stem between January 1st 2005 and January 31st 2010 were eligible for inclusion. Outcome measures included data on all components in situ beyond 10 years, death occurring within 10 years with components in situ and all-cause revision surgery.
Results
A total of 829 stems were included in the data set. Of these, 808 (97.5%) had no further surgery within the follow-up period; 648 stems (78.1%) were in situ beyond 10 years, and 165 (19.9%) were in situ at death before 10 years. The mean preoperative WOMAC score was 61±15.9 with a mean postoperative score of 20.4±19.3.
Conclusions
The Exeter V40 cemented femoral stem demonstrates excellent functional outcomes and survival when used in a high-volume non-designer centre.
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Affiliation(s)
- J Mahon
- National Orthopaedic Hospital Cappagh, Dublin, Ireland
| | - C McCarthy
- National Orthopaedic Hospital Cappagh, Dublin, Ireland
| | - G Sheridan
- National Orthopaedic Hospital Cappagh, Dublin, Ireland
| | - J Cashman
- National Orthopaedic Hospital Cappagh, Dublin, Ireland
- UCD, Dublin, Ireland
| | - J O'Byrne
- National Orthopaedic Hospital Cappagh, Dublin, Ireland
- RCSI, Dublin, Ireland
| | - P Kenny
- National Orthopaedic Hospital Cappagh, Dublin, Ireland
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Montero-Odasso M, Sarquis-Adamson Y, Kamkar N, Pieruccini-Faria F, Bray N, Cullen S, Mahon J, Titus J, Camicioli R, Borrie MJ, Bherer L, Speechley M. Dual-task gait speed assessments with an electronic walkway and a stopwatch in older adults. A reliability study. Exp Gerontol 2020; 142:111102. [PMID: 33017671 DOI: 10.1016/j.exger.2020.111102] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2020] [Revised: 09/16/2020] [Accepted: 09/24/2020] [Indexed: 01/16/2023]
Abstract
BACKGROUND/OBJECTIVES Slow gait speed prospectively predicts elevated risk of adverse events such as falls, morbidity, and mortality. Additionally, gait speed under a cognitively demanding challenge (dual-task gait) predicts further cognitive decline and dementia incidence. This evidence has been mostly collected using electronic walkways; however, not all clinical set ups have an electronic walkway and comparability with simple manual dual-gait speed testing, like a stopwatch, has not yet been examined. Our main objective was to assess concurrent-validity and reliability of gait speed assessments during dual-tasking using a stopwatch and electronic walkway in older adults with mild and subjective cognitive impairment (MCI and SCI). DESIGN Cross-sectional, reliability study. SETTING Clinic based laboratory at an academic hospital in London, ON, Canada. PARTICIPANTS 237 walk tests from 34 community-dwelling participants (mean age 71.84 SD 5.38; 21 female - 62%, 13 male - 38%) with SCI and MCI. were included from the Comprehensive Assessment of Neurodegeneration and Dementia (COMPASS-ND) study. INTERVENTION Each participant performed seven walk tests: three single gait walks at their normal pace, three dual-task walks (walking and counting backwards by one, by sevens, and naming animals), and one fast walk. MEASUREMENTS Gait speed (cm/s) for each walk was measured simultaneously with an electronic walkway (Zeno Mat®) and a handheld stopwatch (Ultrak chronometer®). Dual-task cost (DTC) was calculated for the three individual dual-task walks as [((single gait speed - dual-task gait speed) / single gait speed) ∗ 100]. Level of agreement between the two measurement methods was analyzed using Pearson correlations, paired t-tests, and Bland-Altman plots. RESULTS Gait speed was consistently lower when measured with the stopwatch than with the electronic walkway (mean speed difference: 10.6 cm/s ± 5.1, p < 0.001). Calculating DTC, however, yielded very similar results with both methods (mean DTC difference: 0.19 ± 1.18, p = 0.872). The higher the DTC, the closer the measurement between methods. CONCLUSION Assessing and calculating DTC with a stopwatch is simple, accessible and reliable. Its validity and reliability were high in this clinical sample of community older adults with SCI and MCI.
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Affiliation(s)
- M Montero-Odasso
- Gait and Brain Lab, Parkwood Institute, Lawson Health Research Institute, London, ON, Canada; Department of Medicine, Division of Geriatric Medicine, Schulich School of Medicine & Dentistry, University of Western Ontario, London, ON, Canada; School of Kinesiology, Faculty of Health Sciences, University of Western Ontario, London, ON, Canada; Department of Epidemiology and Biostatistics, Schulich School of Medicine & Dentistry, University of Western Ontario, London, ON, Canada.
| | - Y Sarquis-Adamson
- Gait and Brain Lab, Parkwood Institute, Lawson Health Research Institute, London, ON, Canada.
| | - N Kamkar
- Gait and Brain Lab, Parkwood Institute, Lawson Health Research Institute, London, ON, Canada.
| | - F Pieruccini-Faria
- Gait and Brain Lab, Parkwood Institute, Lawson Health Research Institute, London, ON, Canada; Department of Medicine, Division of Geriatric Medicine, Schulich School of Medicine & Dentistry, University of Western Ontario, London, ON, Canada.
| | - N Bray
- Gait and Brain Lab, Parkwood Institute, Lawson Health Research Institute, London, ON, Canada; School of Kinesiology, Faculty of Health Sciences, University of Western Ontario, London, ON, Canada.
| | - S Cullen
- Gait and Brain Lab, Parkwood Institute, Lawson Health Research Institute, London, ON, Canada; School of Kinesiology, Faculty of Health Sciences, University of Western Ontario, London, ON, Canada.
| | - J Mahon
- Gait and Brain Lab, Parkwood Institute, Lawson Health Research Institute, London, ON, Canada; School of Kinesiology, Faculty of Health Sciences, University of Western Ontario, London, ON, Canada.
| | - J Titus
- Gait and Brain Lab, Parkwood Institute, Lawson Health Research Institute, London, ON, Canada; School of Kinesiology, Faculty of Health Sciences, University of Western Ontario, London, ON, Canada.
| | - R Camicioli
- Department of Medicine (Neurology) and Neuroscience and Mental Health Institute, University of Alberta, Edmonton, Alberta, Canada.
| | - M J Borrie
- Department of Medicine, Division of Geriatric Medicine, Schulich School of Medicine & Dentistry, University of Western Ontario, London, ON, Canada.
| | - L Bherer
- Department of Medicine, Université de Montréal, Montreal, Quebec, Canada; Montreal Heart Institute, Montreal, Quebec, Canada; Centre de recherche de l'Institut Universitaire de Gériatrie de Montréal (CRIUGM), Montreal, Quebec, Canada.
| | - M Speechley
- Department of Epidemiology and Biostatistics, Schulich School of Medicine & Dentistry, University of Western Ontario, London, ON, Canada.
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Mata-Cases M, Mahon J, Mauricio D, Franch-Nadal J, Real J, Hex N. Improving management of glycaemic control in people with T2DM in primary care: estimation of the impact on the clinical complications and associated costs. BMC Health Serv Res 2020; 20:803. [PMID: 32847581 PMCID: PMC7448435 DOI: 10.1186/s12913-020-05360-w] [Citation(s) in RCA: 3] [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: 07/01/2019] [Accepted: 05/24/2020] [Indexed: 12/20/2022] Open
Abstract
BACKGROUND To estimate the potential benefits in terms of avoided complications and cost reduction if the Spanish health system would encourage the intensification of treatment for better glycaemic control in adults with Type 2 diabetes from the current HbA1c target used in clinical practice of 68 mmol/mol to a target of 53 mmol/mol. METHODS The IQVIA Core Diabetes Model (version 9.0) was used to model the impact of these changes in respect of micro- and macrovascular complications and the associated costs. The modelling was based on data derived from the SIDIAP-Q population database from Catalonia, taking a random cohort of 10,000 people with type 2 diabetes and dividing it into sub-groups based on their baseline HbA1c. RESULTS The CDM modelling showed that the average cost reduction per person varies depending on baseline HbA1c. The model estimates that after 25 years, people with a baseline HbA1c between 48 and 58 mmol/mol and > 75 mmol/mol show an average cost reduction of €6027 and €11,966, respectively. Applying the per-person cost reduction to the cohorts of the prevalent population in Spain (1,910,374) the overall estimated cost reduction was €14.7 billion over 25 years. The improvements in outcomes resulted in an estimated reduction of more than 1.2 million complications cumulatively over 25 years, of which more than 550,000 relate to diabetic foot and more than 170,000 related to renal disease. CONCLUSION Over a 25 year period, Spain could considerably reduce costs and avoid major complications if, on a population level, more ambitious glycaemic control, according to Spanish or EU guidelines, could be achieved among people with type 2 diabetes by reducing the HbA1c threshold for treatment intensification. Although there is a slower trajectory for benefits in earlier years, there is a much more rapid benefit gain between years 5 and 15.
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Affiliation(s)
- M Mata-Cases
- DAP-Cat group, Unitat de Suport a la Recerca Barcelona Ciutat, Institut Universitari d'Investigació en Atenció Primària Jordi Gol (IDIAP Jordi Gol), CIBER of Diabetes and Associated Metabolic Diseases (CIBERDEM), Instituto de Salud Carlos III (ISCIII), Carrer Sardenya 375, entlo 1ª, 08025, Barcelona, Spain.
| | - J Mahon
- York Health Economics Consortium Ltd, University of York, York, UK
| | - D Mauricio
- DAP-Cat group, Unitat de Suport a la Recerca Barcelona Ciutat, Institut Universitari d'Investigació en Atenció Primària Jordi Gol (IDIAP Jordi Gol), CIBER of Diabetes and Associated Metabolic Diseases (CIBERDEM), Instituto de Salud Carlos III (ISCIII), Carrer Sardenya 375, entlo 1ª, 08025, Barcelona, Spain
| | - J Franch-Nadal
- DAP-Cat group, Unitat de Suport a la Recerca Barcelona Ciutat, Institut Universitari d'Investigació en Atenció Primària Jordi Gol (IDIAP Jordi Gol), CIBER of Diabetes and Associated Metabolic Diseases (CIBERDEM), Instituto de Salud Carlos III (ISCIII), Carrer Sardenya 375, entlo 1ª, 08025, Barcelona, Spain
| | - J Real
- DAP-Cat group, Unitat de Suport a la Recerca Barcelona Ciutat, Institut Universitari d'Investigació en Atenció Primària Jordi Gol (IDIAP Jordi Gol), CIBER of Diabetes and Associated Metabolic Diseases (CIBERDEM), Instituto de Salud Carlos III (ISCIII), Carrer Sardenya 375, entlo 1ª, 08025, Barcelona, Spain
| | - N Hex
- York Health Economics Consortium Ltd, University of York, York, UK
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Bain S, Feher M, Fisher M, Hex N, Lee KCS, Mahon J, Russell‐Jones D, Schou H, Wilmot EG, Baxter M. A review of the NG17 recommendations for the use of basal insulin in type 1 diabetes. Diabet Med 2020; 37:219-228. [PMID: 31729775 PMCID: PMC7004078 DOI: 10.1111/dme.14180] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 11/11/2019] [Indexed: 01/17/2023]
Abstract
AIMS To revisit the data analysis used to inform National Institute of Health and Care Excellence (NICE) NG17 guidance for initiating basal insulin in adults with type 1 diabetes mellitus (diabetes). METHODS We replicated the data, methodology and analysis used by NICE diabetes in the NG17 network meta-analysis (NMA). We expanded this data cohort to a more contemporary data set (extended 2017 NMA) and restricted the studies included to improve the robustness of the data set (restricted 2017 NMA) and in a post hoc analysis, changed the index comparator from neutral protamine Hagedorn (NPH) insulin twice daily to insulin detemir twice daily. RESULTS The absolute changes in HbA1c were similar to those reported in the NG17. However, all 95% credible intervals for change in HbA1c point estimates crossed the line of null effect, except for detemir twice daily (in the NICE and extended 2017 NMAs) and NPH four times daily. In the detemir twice-daily centred post hoc analysis, the 95% credible intervals for change in HbA1c crossed the line of null effect for all basal therapies, except NPH. CONCLUSIONS In NG17, comparisons of basal insulins were based solely on efficacy of glycaemic control. Many of the trials used in this analysis were treat-to-target, which minimize differences in HbA1c . In the NMAs, statistical significance was severely undermined by the wide credible intervals. Despite these limitations, point estimates of HbA1c were used to rank the insulins and formed the basis of NG17 guidance. This study queries whether such analyses should be used to make specific clinical recommendations.
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Affiliation(s)
- S. Bain
- Diabetes Research Unit CymruUniversity Medical SchoolSwanseaUK
| | - M. Feher
- Department of Clinical and Experimental MedicineUniversity of SurreyGuildfordUK
| | - M. Fisher
- Department of Diabetes, Endocrinology and Clinical PharmacologyGlasgow Royal InfirmaryGlasgowUK
| | - N. Hex
- York Health Economics Consortium LtdUniversity of YorkYorkUK
| | | | - J. Mahon
- York Health Economics Consortium LtdUniversity of YorkYorkUK
| | - D. Russell‐Jones
- Department of Diabetes and EndocrinologyRoyal Surrey County Hospital and University of SurreyGuildfordUK
| | | | - E. G. Wilmot
- Department of Diabetes and EndocrinologyUniversity Hospitals of Derby and Burton NHS FTDerbyUK
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Mahon J, Thompson M, Sandquist M, Raj A, Schadt C, Callen J, Owen C, McGowan K. LB1108 Association of aplastic anemia with isotretinoin: Is it more common than we think? J Invest Dermatol 2019. [DOI: 10.1016/j.jid.2019.06.073] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Mahon J, Faraday M, McVary K. 204 Patient and Partner Satisfaction Rates after Penile Prostheses Surgery: A Systematic Review. J Sex Med 2019. [DOI: 10.1016/j.jsxm.2019.01.212] [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: 10/27/2022]
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Gupta N, Rogers T, Mahon J, McVary K. 252 Is Sexual Function Better Preserved After Water Vapor Thermal Therapy Or Medical Therapy For Lower Urinary Tract Symptoms Due To Benign Prostatic Hyperplasia? J Sex Med 2019. [DOI: 10.1016/j.jsxm.2019.01.258] [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: 10/27/2022]
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Triolo TM, Fouts A, Pyle L, Yu L, Gottlieb PA, Steck AK, Greenbaum CJ, Atkinson M, Baidal D, Battaglia M, Becker D, Bingley P, Bosi E, Buckner J, Clements M, Colman P, DiMeglio L, Gitelman S, Goland R, Gottlieb P, Herold K, Knip M, Krischer J, Lernmark A, Moore W, Moran A, Muir A, Palmer J, Peakman M, Philipson L, Raskin P, Redondo M, Rodriguez H, Russell W, Spain L, Schatz D, Sosenko J, Wentworth J, Wherrett D, Wilson D, Winter W, Ziegler A, Anderson M, Antinozzi P, Benoist C, Blum J, Bourcier K, Chase P, Clare-Salzler M, Clynes R, Eisenbarth G, Fathman C, Grave G, Hering B, Insel R, Kaufman F, Kay T, Leschek E, Mahon J, Marks J, Nanto-Salonen K, Nepom G, Orban T, Parkman R, Pescovitz M, Peyman J, Pugliese A, Roep B, Roncarolo M, Savage P, Simell O, Sherwin R, Siegelman M, Skyler J, Steck A, Thomas J, Trucco M, Wagner J, Krischer JP, Leschek E, Rafkin L, Bourcier K, Cowie C, Foulkes M, Insel R, Krause-Steinrauf H, Lachin JM, Malozowski S, Peyman J, Ridge J, Savage P, Skyler JS, Zafonte SJ, Rafkin L, Sosenko JM, Kenyon NS, Santiago I, Krischer JP, Bundy B, Abbondondolo M, Dixit S, Pasha M, King K, Adcock H, Atterberry L, Fox K, Englert N, Mauras J, Permuy K, Sikes T, Adams T, Berhe B, Guendling L, McLennan L, Paganessi C, Murphy M, Draznin M, Kamboj S, Sheppard V, Lewis L, Coates W, Amado D, Moore G, Babar J, Bedard D, Brenson-Hughes J, Cernich M, Clements R, Duprau S, Goodman L, Hester L, Huerta-Saenz A, Asif I, Karmazin T, Letjen S, Raman D, Morin W, Bestermann E, Morawski J, White A, Brockmyer R, Bays S, Campbell A, Boonstra M, Stapleton N, Stone A, Donoho H, Everett H, Hensley M, Johnson C, Marshall N, Skirvin P, Taylor R, Williams L, Burroughs C, Ray C, Wolverton D, Nickels C, Dothard P, Speiser M, Pellizzari L, Bokor K, Izuora S, Abdelnour P, Cummings S, Cuthbertson D, Paynor M, Leahy M, Riedl S, Shockley R, Saad T, Briones S, Casella C, Herz K, Walsh J, Greening F, Deemer M, Hay S, Hunt N, Sikotra L, Simons D, Karounos R, Oremus L, Dye L, Myers D, Ballard W, Miers R, Eberhard C, Sparks K, Thraikill K, Edwards J, Fowlkes S, Kemp A, Morales L, Holland L, Johnson P, Paul A, Ghatak K, Fiske S, Phelen H, Leyland T, Henderson D, Brenner E, Oppenheimer I, Mamkin C, Moniz C, Clarson M, Lovell A, Peters V, Ford J, Ruelas D, Borut D, Burt M, Jordan S, Castilla P, Flores M, Ruiz L, Hanson J, Green-Blair R, Sheridan K, Garmeson J, Wintergerst G, Pierce A, Omoruyi M, Foster S, Kingery A, Lunsford I, Cervantes T, Parker P, Price J, Urben I, Guillette H, Doughty H, Haydock V, Parker P, Bergman S, Duncum C, Rodda A, Perelman R, Calendo C, Barrera E, Arce-Nunez Y, Geyer S, Martinez M, De la Portilla I, Cardenas L, Garrido M, Villar R, Lorini E, Calandra G, D’Annuzio K, Perri N, Minuto C, Hays B, Rebora R, Callegari O, Ali J, Kramer B, Auble S, Cabrera P, Donohoue R, Fiallo-Scharer M, Hessner P, Wolfgram A, Henderson C, Kansra N, Bettin R, McCuller A, Miller S, Accacha J, Corrigan E, Fiore R, Levine T, Mahoney C, Polychronakos V, Henry M, Gagne H, Starkman M, Fox D, Chin F, Melchionne L, Silverman I, Marshall L, Cerracchio J, Cruz A, Viswanathan J, Heyman K, Wilson S, Chalew S, Valley S, Layburn A, Lala P, Clesi M, Genet G, Uwaifo A, Charron T, Allerton W, Hsiao B, Cefalu L, Melendez-Ramirez R, Richards C, Alleyn E, Gustafson M, Lizanna J, Wahlen S, Aleiwe M, Hansen H, Wahlen C, Karges C, Levy A, Bonaccorso R, Rapaport Y, Tomer D, Chia M, Goldis L, Iazzetti M, Klein C, Levister L, Waldman E, Keaton N, Wallach M, Regelmann Z, Antal M, Aranda C, Reynholds A, Vinik P, Barlow M, Bourcier M, Nevoret J, Couper S, Kinderman A, Beresford N, Thalagne H, Roper J, Gibbons J, Hill S, Balleaut C, Brennan J, Ellis-Gage L, Fear T, Gray L, Law P, Jones C, McNerney L, Pointer N, Price K, Few D, Tomlinson N, Leech D, Wake C, Owens M, Burns J, Leinbach A, Wotherspoon A, Murray K, Short G, Curry S, Kelsey J, Lawson J, Porter S, Stevens E, Thomson S, Winship L, Liu S, Wynn E, Wiltshire J, Krebs P, Cresswell H, Faherty C, Ross L, Denvir J, Drew T, Randell P, Mansell S, Lloyd J, Bell S, Butler Y, Hooton H, Navarra A, Roper G, Babington L, Crate H, Cripps A, Ledlie C, Moulds R, Malloy J, Norton B, Petrova O, Silkstone C, Smith K, Ghai M, Murray V, Viswanathan M, Henegan O, Kawadry J, Olson L, Maddox K, Patterson T, Ahmad B, Flores D, Domek S, Domek K, Copeland M, George J, Less T, Davis M, Short A, Martin J, Dwarakanathan P, O’Donnell B, Boerner L, Larson M, Phillips M, Rendell K, Larson C, Smith K, Zebrowski L, Kuechenmeister M, Miller J, Thevarayapillai M, Daniels H, Speer N, Forghani R, Quintana C, Reh A, Bhangoo P, Desrosiers L, Ireland T, Misla C, Milliot E, Torres S, Wells J, Villar M, Yu D, Berry D, Cook J, Soder A, Powell M, Ng M, Morrison Z, Moore M, Haslam M, Lawson B, Bradley J, Courtney C, Richardson C, Watson E, Keely D, DeCurtis M, Vaccarcello-Cruz Z, Torres K, Muller S, Sandberg H, Hsiang B, Joy D, McCormick A, Powell H, Jones J, Bell S, Hargadon S, Hudson M, Kummer S, Nguyen T, Sauder E, Sutton K, Gensel R, Aguirre-Castaneda V, Benavides, Lopez D, Hemp S, Allen J, Stear E, Davis T, O’Donnell R, Jones A, Roberts J, Dart N, Paramalingam L, Levitt Katz N, Chaudhary K, Murphy S, Willi B, Schwartzman C, Kapadia D, Roberts A, Larson D, McClellan G, Shaibai L, Kelley G, Villa C, Kelley R, Diamond M, Kabbani T, Dajani F, Hoekstra M, Sadler K, Magorno J, Holst V, Chauhan N, Wilson P, Bononi M, Sperl A, Millward M, Eaton L, Dean J, Olshan H, Stavros T, Renna C, Milliard, Brodksy L, Bacon J, Quintos L, Topor S, Bialo B, Bancroft A, Soto W, Lagarde H, Tamura R, Lockemer T, Vanderploeg M, Ibrahim M, Huie V, Sanchez R, Edelen R, Marchiando J, Palmer T, Repas M, Wasson P, Wood K, Auker J, Culbertson T, Kieffer D, Voorhees T, Borgwardt L, DeRaad K, Eckert E, Isaacson H, Kuhn A, Carroll M, Xu P, Schubert G, Francis S, Hagan T, Le M, Penn E, Wickham C, Leyva K, Rivera J, Padilla I, Rodriguez N, Young K, Jospe J, Czyzyk B, Johnson U, Nadgir N, Marlen G, Prakasam C, Rieger N, Glaser E, Heiser B, Harris C, Alies P, Foster H, Slater K, Wheeler D, Donaldson M, Murray D, Hale R, Tragus D, Word J, Lynch L, Pankratz W, Badias F, Rogers R, Newfield S, Holland M, Hashiguchi M, Gottschalk A, Philis-Tsimikas R, Rosal S, Franklin S, Guardado N, Bohannon M, Baker A, Garcia T, Aguinaldo J, Phan V, Barraza D, Cohen J, Pinsker U, Khan J, Wiley L, Jovanovic P, Misra M, Bassi M, Wright D, Cohen K, Huang M, Skiles S, Maxcy C, Pihoker K, Cochrane J, Fosse S, Kearns M, Klingsheim N, Beam C, Wright L, Viles H, Smith S, Heller M, Cunningham A, Daniels L, Zeiden J, Field R, Walker K, Griffin L, Boulware D, Bartholow C, Erickson J, Howard B, Krabbenhoft C, Sandman A, Vanveldhuizen J, Wurlger A, Zimmerman K, Hanisch L, Davis-Keppen A, Bounmananh L, Cotterill J, Kirby M, Harris A, Schmidt C, Kishiyama C, Flores J, Milton W, Martin C, Whysham A, Yerka T, Bream S, Freels J, Hassing J, Webster R, Green P, Carter J, Galloway D, Hoelzer S, Roberts S, Said P, Sullivan H, Freeman D, Allen E, Reiter E, Feinberg C, Johnson L, Newhook D, Hagerty N, White L, Levandoski J, Kyllo M, Johnson C, Gough J, Benoit P, Iyer F, Diamond H, Hosono S, Jackman L, Barette P, Jones I, Sills S, Bzdick J, Bulger R, Ginem J, Weinstock I, Douek R, Andrews G, Modgill G, Gyorffy L, Robin N, Vaidya S, Crouch K, O’Brien C, Thompson N, Granger M, Thorne J, Blumer J, Kalic L, Klepek J, Paulett B, Rosolowski J, Horner M, Watkins J, Casey K, Carpenter C, Michelle Kieffer MH, Burns J, Horton C, Pritchard D, Soetaert A, Wynne C, Chin O, Molina C, Patel R, Senguttuvan M, Wheeler O, Lane P, Furet C, Steuhm D, Jelley S, Goudeau L, Chalmers D, Greer C, Panagiotopoulos D, Metzger D, Nguyen M, Horowitz M, Linton C, Christiansen E, Glades C, Morimoto M, Macarewich R, Norman K, Patin C, Vargas A, Barbanica A, Yu P, Vaidyanathan W, Nallamshetty L, Osborne R, Mehra S, Kaster S, Neace J, Horner G, Reeves C, Cordrey L, Marrs T, Miller S, Dowshen D, Oduah V, Doyle S, Walker D, Catte H, Dean M, Drury-Brown B, Hackman M, Lee S, Malkani K, Cullen K, Johnson P, Parrimon Y, Hampton M, McCarrell C, Curtis E, Paul, Zambrano Y, Paulus K, Pilger J, Ramiro J, Luvon Ritzie AQ, Sharma A, Shor A, Song X, Terry A, Weinberger J, Wootten M, Lachin JM, Foulkes M, Harding P, Krause-Steinrauf H, McDonough S, McGee PF, Owens Hess K, Phoebus D, Quinlan S, Raiden E, Batts E, Buddy C, Kirpatrick K, Ramey M, Shultz A, Webb C, Romesco M, Fradkin J, Leschek E, Spain L, Savage P, Aas S, Blumberg E, Beck G, Brillon D, Gubitosi-Klug R, Laffel L, Vigersky R, Wallace D, Braun J, Lernmark A, Lo B, Mitchell H, Naji A, Nerup J, Orchard T, Steffes M, Tsiatis A, Veatch R, Zinman B, Loechelt B, Baden L, Green M, Weinberg A, Marcovina S, Palmer JP, Weinberg A, Yu L, Babu S, Winter W, Eisenbarth GS, Bingley P, Clynes R, DiMeglio L, Eisenbarth G, Hays B, Leschek E, Marks J, Matheson D, Rafkin L, Rodriguez H, Spain L, Wilson D, Redondo M, Gomez D, McDonald A, Pena S, Pietropaolo M, Shippy K, Batts E, Brown T, Buckner J, Dove A, Hammond M, Hefty D, Klein J, 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Frank E, Liu J, Perry J, Pyle R, Rigby A, Riley K, Soto A, Gitelman S, Adi S, Anderson M, Berhel A, Breen K, Fraser K, Gerard-Gonzalez A, Jossan P, Lustig R, Moassesfar S, Mugg A, Ng D, Prahalod P, Rangel-Lugo M, Sanda S, Tarkoff J, Torok C, Wesch R, Aslan I, Buchanan J, Cordier J, Hamilton C, Hawkins L, Ho T, Jain A, Ko K, Lee T, Phelps S, Rosenthal S, Sahakitrungruang T, Stehl L, Taylor L, Wertz M, Wong J, Philipson L, Briars R, Devine N, Littlejohn E, Grant T, Gottlieb P, Klingensmith G, Steck A, Alkanani A, Bautista K, Bedoy R, Blau A, Burke B, Cory L, Dang M, Fitzgerald-Miller L, Fouts A, Gage V, Garg S, Gesauldo P, Gutin R, Hayes C, Hoffman M, Ketchum K, Logsden-Sackett N, Maahs D, Messer L, Meyers L, Michels A, Peacock S, Rewers M, Rodriguez P, Sepulbeda F, Sippl R, Steck A, Taki I, Tran BK, Tran T, Wadwa RP, Zeitler P, Barker J, Barry S, Birks L, Bomsburger L, Bookert T, Briggs L, Burdick P, Cabrera R, Chase P, Cobry E, Conley A, Cook G, Daniels J, DiDomenico D, Eckert J, Ehler A, Eisenbarth G, Fain P, Fiallo-Scharer R, Frank N, Goettle H, Haarhues M, Harris S, Horton L, Hutton J, Jeffrrey J, Jenison R, Jones K, Kastelic W, King MA, Lehr D, Lungaro J, Mason K, Maurer H, Nguyen L, Proto A, Realsen J, Schmitt K, Schwartz M, Skovgaard S, Smith J, Vanderwel B, Voelmle M, Wagner R, Wallace A, Walravens P, Weiner L, Westerhoff B, Westfall E, Widmer K, Wright H, Schatz D, Abraham A, Atkinson M, Cintron M, Clare-Salzler M, Ferguson J, Haller M, Hosford J, Mancini D, Rohrs H, Silverstein J, Thomas J, Winter W, Cole G, Cook R, Coy R, Hicks E, Lewis N, Marks J, Pugliese A, Blaschke C, Matheson D, Pugliese A, Sanders-Branca N, Ray Arce LA, Cisneros M, Sabbag S, Moran A, Gibson C, Fife B, Hering B, Kwong C, Leschyshyn J, Nathan B, Pappenfus B, Street A, Boes MA, Peterson Eck S, Finney L, Albright Fischer T, Martin A, Jacqueline Muzamhindo C, Rhodes M, Smith J, Wagner J, Wood B, Becker D, Delallo K, Diaz A, Elnyczky B, Libman I, Pasek B, Riley K, Trucco M, Copemen B, Gwynn D, Toledo F, Rodriguez H, Bollepalli S, Diamond F, Eyth E, Henson D, Lenz A, Shulman D, Raskin P, Adhikari S, Dickson B, Dunnigan E, Lingvay I, Pruneda L, Ramos-Roman M, Raskin P, Rhee C, Richard J, Siegelman M, Sturges D, Sumpter K, White P, Alford M, Arthur J, Aviles-Santa ML, Cordova E, Davis R, Fernandez S, Fordan S, Hardin T, Jacobs A, Kaloyanova P, Lukacova-Zib I, Mirfakhraee S, Mohan A, Noto H, Smith O, Torres N, Wherrett D, Balmer D, Eisel L, Kovalakovska R, Mehan M, Sultan F, Ahenkorah B, Cevallos J, Razack N, Jo Ricci M, Rhode A, Srikandarajah M, Steger R, Russell WE, Black M, Brendle F, Brown A, Moore D, Pittel E, Robertson A, Shannon A, Thomas JW, Herold K, Feldman L, Sherwin R, Tamborlane W, Weinzimer S, Toppari J, Kallio T, Kärkkäinen M, Mäntymäki E, Niininen T, Nurmi B, Rajala P, Romo M, Suomenrinne S, Näntö-Salonen K, Simell O, Simell T, Bosi E, Battaglia M, Bianconi E, Bonfanti R, Grogan P, Laurenzi A, Martinenghi S, Meschi F, Pastore M, Falqui L, Teresa Muscato M, Viscardi M, Bingley P, Castleden H, Farthing N, Loud S, Matthews C, McGhee J, Morgan A, Pollitt J, Elliot-Jones R, Wheaton C, Knip M, Siljander H, Suomalainen H, Colman P, Healy F, Mesfin S, Redl L, Wentworth J, Willis J, Farley M, Harrison L, Perry C, Williams F, Mayo A, Paxton J, Thompson V, Volin L, Fenton C, Carr L, Lemon E, Swank M, Luidens M, Salgam M, Sharma V, Schade D, King C, Carano R, Heiden J, Means N, Holman L, Thomas I, Madrigal D, Muth T, Martin C, Plunkett C, Ramm C, Auchus R, Lane W, Avots E, Buford M, Hale C, Hoyle J, Lane B, Muir A, Shuler S, Raviele N, Ivie E, Jenkins M, Lindsley K, Hansen I, Fadoju D, Felner E, Bode B, Hosey R, Sax J, Jefferies C, Mannering S, Prentis R, She J, Stachura M, Hopkins D, Williams J, Steed L, Asatapova E, Nunez S, Knight S, Dixon P, Ching J, Donner T, Longnecker S, Abel K, Arcara K, Blackman S, Clark L, Cooke D, Plotnick L, Levin P, Bromberger L, Klein K, Sadurska K, Allen C, Michaud D, Snodgrass H, Burghen G, Chatha S, Clark C, Silverberg J, Wittmer C, Gardner J, LeBoeuf C, Bell P, McGlore O, Tennet H, Alba N, Carroll M, Baert L, Beaton H, Cordell E, Haynes A, Reed C, Lichter K, McCarthy P, McCarthy S, Monchamp T, Roach J, Manies S, Gunville F, Marosok L, Nelson T, Ackerman K, Rudolph J, Stewart M, McCormick K, May S, Falls T, Barrett T, Dale K, Makusha L, McTernana C, Penny-Thomas K, Sullivan K, Narendran P, Robbie J, Smith D, Christensen R, Koehler B, Royal C, Arthur T, Houser H, Renaldi J, Watsen S, Wu P, Lyons L, House B, Yu J, Holt H, Nation M, Vickers C, Watling R, Heptulla R, Trast J, Agarwal C, Newell D, Katikaneni R, Gardner C, Del A, Rio A, Logan H, Collier C, Rishton G, Whalley A, Ali S, Ramtoola T, Quattrin L, Mastrandea A, House M, Ecker C, Huang C, Gougeon J, Ho D, Pacuad D, Dunger J, May C, O’Brien C, Acerini B, Salgin A, Thankamony R, Williams J, Buse G, Fuller M, Duclos J, Tricome H, Brown D, Pittard D, Bowlby A, Blue T, Headley S, Bendre K, Lewis K, Sutphin C, Soloranzo J, Puskaric H, Madison M, Rincon M, Carlucci R, Shridharani B, Rusk E, Tessman D, Huffman H, Abrams B, Biederman M, Jones V, Leathers W, Brickman P, Petrie D, Zimmerman J, Howard L, Miller R, Alemzadeh D, Mihailescu R, Melgozza-Walker N, Abdulla C, Boucher-Berry D, Ize-Ludlow R, Levy C, Swenson, Brousell N, Crimmins D, Edler T, Weis C, Schultz D, Rogers D, Latham C, Mawhorter C, Switzer W, Spencer P, Konstantnopoulus S, Broder J, Klein L, Knight L, Szadek G, Welnick B, Thompson R, Hoffman A, Revell J, Cherko K, Carter E, Gilson J, Haines G, Arthur B, Bowen W, Zipf P, Graves R, Lozano D, Seiple K, Spicer A, Chang J, Fregosi J, Harbinson C, Paulson S, Stalters P, Wright D, Zlock A, Freeth J, Victory H, Maheshwari A, Maheshwari T, Holmstrom J, Bueno R, Arguello J, Ahern L, Noreika V, Watson S, Hourse P, Breyer C, Kissel Y, Nicholson M, Pfeifer S, Almazan J, Bajaj M, Quinn K, Funk J, McCance E, Moreno R, Veintimilla A, Wells J, Cook S, Trunnel J, Henske S, Desai K, Frizelis F, Khan R, Sjoberg K, Allen P, Manning G, Hendry B, Taylor S, Jones W, Strader M, Bencomo T, Bailey L, Bedolla C, Roldan C, Moudiotis B, Vaidya C, Anning S, Bunce S, Estcourt E, Folland E, Gordon C, Harrill J, Ireland J, Piper L, Scaife K, Sutton S, Wilkins M, Costelloe J, Palmer L, Casas C, Miller M, Burgard C, Erickson J, Hallanger-Johnson P, Clark W, Taylor A, Lafferty S, Gillett C, Nolan M, Pathak L, Sondrol T, Hjelle S, Hafner J, Kotrba R, Hendrickson A, Cemeroglu T, Symington M, Daniel Y, Appiagyei-Dankah D, Postellon M, Racine L, Kleis K, Barnes S, Godwin H, McCullough K, Shaheen G, Buck L, Noel M, Warren S, Weber S, Parker I, Gillespie B, Nelson C, Frost J, Amrhein E, Moreland A, Hayes J, Peggram J, Aisenberg M, Riordan J, Zasa E, Cummings K, Scott T, Pinto A, Mokashi K, McAssey E, Helden P, Hammond L, Dinning S, Rahman S, Ray C, Dimicri S, Guppy H, Nielsen C, Vogel C, Ariza L, Morales Y, Chang R, Gabbay L, Ambrocio L, Manley R, Nemery W, Charlton P, Smith L, Kerr B, Steindel-Kopp M, Alamaguer D, Liljenquist G, Browning T, Coughenour M, Sulk E, Tsalikan M, Tansey J, Cabbage N. Identical and Nonidentical Twins: Risk and Factors Involved in Development of Islet Autoimmunity and Type 1 Diabetes. Diabetes Care 2019; 42:192-199. [PMID: 30061316 PMCID: PMC6341285 DOI: 10.2337/dc18-0288] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/07/2018] [Accepted: 06/28/2018] [Indexed: 02/03/2023]
Abstract
OBJECTIVE There are variable reports of risk of concordance for progression to islet autoantibodies and type 1 diabetes in identical twins after one twin is diagnosed. We examined development of positive autoantibodies and type 1 diabetes and the effects of genetic factors and common environment on autoantibody positivity in identical twins, nonidentical twins, and full siblings. RESEARCH DESIGN AND METHODS Subjects from the TrialNet Pathway to Prevention Study (N = 48,026) were screened from 2004 to 2015 for islet autoantibodies (GAD antibody [GADA], insulinoma-associated antigen 2 [IA-2A], and autoantibodies against insulin [IAA]). Of these subjects, 17,226 (157 identical twins, 283 nonidentical twins, and 16,786 full siblings) were followed for autoantibody positivity or type 1 diabetes for a median of 2.1 years. RESULTS At screening, identical twins were more likely to have positive GADA, IA-2A, and IAA than nonidentical twins or full siblings (all P < 0.0001). Younger age, male sex, and genetic factors were significant factors for expression of IA-2A, IAA, one or more positive autoantibodies, and two or more positive autoantibodies (all P ≤ 0.03). Initially autoantibody-positive identical twins had a 69% risk of diabetes by 3 years compared with 1.5% for initially autoantibody-negative identical twins. In nonidentical twins, type 1 diabetes risk by 3 years was 72% for initially multiple autoantibody-positive, 13% for single autoantibody-positive, and 0% for initially autoantibody-negative nonidentical twins. Full siblings had a 3-year type 1 diabetes risk of 47% for multiple autoantibody-positive, 12% for single autoantibody-positive, and 0.5% for initially autoantibody-negative subjects. CONCLUSIONS Risk of type 1 diabetes at 3 years is high for initially multiple and single autoantibody-positive identical twins and multiple autoantibody-positive nonidentical twins. Genetic predisposition, age, and male sex are significant risk factors for development of positive autoantibodies in twins.
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Affiliation(s)
- Taylor M. Triolo
- Barbara Davis Center for Diabetes, University of Colorado School of Medicine, Aurora, CO
| | - Alexandra Fouts
- Barbara Davis Center for Diabetes, University of Colorado School of Medicine, Aurora, CO
| | - Laura Pyle
- Department of Pediatrics, University of Colorado Anschutz Medical Campus, Aurora, CO
| | - Liping Yu
- Barbara Davis Center for Diabetes, University of Colorado School of Medicine, Aurora, CO
| | - Peter A. Gottlieb
- Barbara Davis Center for Diabetes, University of Colorado School of Medicine, Aurora, CO
| | - Andrea K. Steck
- Barbara Davis Center for Diabetes, University of Colorado School of Medicine, Aurora, CO
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Haller MJ, Schatz DA, Skyler JS, Krischer JP, Bundy BN, Miller JL, Atkinson MA, Becker DJ, Baidal D, DiMeglio LA, Gitelman SE, Goland R, Gottlieb PA, Herold KC, Marks JB, Moran A, Rodriguez H, Russell W, Wilson DM, Greenbaum CJ, Greenbaum C, Atkinson M, Baidal D, Battaglia M, Becker D, Bingley P, Bosi E, Buckner J, Clements M, Colman P, DiMeglio L, Evans-Molina C, Gitelman S, Goland R, Gottlieb P, Herold K, Knip M, Krischer J, Lernmark A, Moore W, Moran A, Muir A, Palmer J, Peakman M, Philipson L, Raskin P, Redondo M, Rodriguez H, Russell W, Spain L, Schatz D, Sosenko J, Wherrett D, Wilson D, Winter W, Ziegler A, Anderson M, Antinozzi P, Benoist C, Blum J, Bourcier K, Chase P, Clare-Salzler M, Clynes R, Cowie C, Eisenbarth G, Fathman C, Grave G, Harrison L, Hering B, Insel R, Jordan S, Kaufman F, Kay T, Kenyon N, Klines R, Lachin J, Leschek E, Mahon J, Marks J, Monzavi R, Nanto-Salonen K, Nepom G, Orban T, Parkman R, Pescovitz M, Peyman J, Pugliese A, Ridge J, Roep B, Roncarolo M, Savage P, Simell O, Sherwin R, Siegelman M, Skyler J, Steck A, Thomas J, Trucco M, Wagner J, Bourcier K, Greenbaum CJ, Krischer JP, Leschek E, Rafkin L, Spain L, Cowie C, Foulkes M, Insel R, Krause-Steinrauf H, Lachin JM, Malozowski S, Peyman J, Ridge J, Savage P, Skyler JS, Zafonte SJ, Greenbaum CJ, Rafkin L, Sosenko JM, Skyler JS, Kenyon NS, Santiago I, Krischer JP, Bundy B, Abbondondolo M, Adams T, Amado D, Asif I, Boonstra M, Boulware D, Bundy B, Burroughs C, Cuthbertson D, Eberhard C, Fiske S, Ford J, Garmeson J, Guillette H, Geyer S, Hays B, Henderson C, Henry M, Heyman K, Hsiao B, Karges C, Kinderman A, Lane L, Leinbach A, Liu S, Lloyd J, Malloy J, Maddox K, Martin J, Miller J, Moore M, Muller S, Nguyen T, O’Donnell R, Parker M, Pereyra M, Reed N, Roberts A, Sadler K, Stavros T, Tamura R, Wood K, Xu P, Young K, Alies P, Badias F, Baker A, Bassi M, Beam C, Boulware D, Bounmananh L, Bream S, Deemer M, Freeman D, Gough J, Ginem J, Granger M, Holloway M, Kieffer M, Lane P, Law P, Linton C, Nallamshetty L, Oduah V, Parrimon Y, Paulus K, Pilger J, Ramiro J, Luvon AQ, Ritzie A, Sharma A, Shor X, Song A, Terry J, Weinberger M, Wootten J, Fradkin E, Leschek L, Spain C, Cowie S, Malozowski P, Savage G, Beck E, Blumberg R, Gubitosi-Klug L, Laffel R, Veatch D, Wallace J, Braun D, Brillon A, Lernmark B, Lo H, Mitchell A, Naji J, Nerup T, Orchard M, Steffes A, Tsiatis B, Zinman B, Loechelt L, Baden M, Green A, Weinberg S, Marcovina JP, Palmer A, Weinberg L, Yu W, Winter GS, Eisenbarth A, Shultz E, Batts K, Fitzpatrick M, Ramey R, Guerra C, Webb M, Romasco C, Greenbaum S, Lord D, VanBuecken W, Hao M, McCulloch D, Hefty K, Varner R, Goland E, Greenberg S, Pollack B, Nelson L, Looper L, DiMeglio M, Spall C, Evans-Molina M, Mantravadi J, Sanchez M, Mullen V, Patrick S, Woerner DM, Wilson T, Aye T, Esrey K, Barahona B, Baker H, Bitar C, Ghodrat M, Hamilton SE, Gitelman CT, Ferrara S, Sanda R, Wesch C, Torok P, Gottlieb J, Lykens C, Brill A, Michels A, Schauwecker MJ, Haller DA, Schatz MA, Atkinson LM, Jacobsen M, Cintron TM, Brusko CH, Wasserfall CE, Mathews JS, Skyler JM, Marks D, Baidal C, Blaschke D, Matheson A, Moran B, Nathan A, Street J, Leschyshyn B, Pappenfus B, Nelson N, Flaherty D, Becker K, Delallo D, Groscost K, Riley H, Rodriguez D, Henson E, Eyth W, Russell A, Brown F, Brendall K, Herold, Feldman L. Low-Dose Anti-Thymocyte Globulin (ATG) Preserves β-Cell Function and Improves HbA 1c in New-Onset Type 1 Diabetes. Diabetes Care 2018; 41:1917-1925. [PMID: 30012675 PMCID: PMC6105329 DOI: 10.2337/dc18-0494] [Citation(s) in RCA: 96] [Impact Index Per Article: 16.0] [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: 03/06/2018] [Accepted: 06/12/2018] [Indexed: 02/03/2023]
Abstract
OBJECTIVE A pilot study suggested that combination therapy with low-dose anti-thymocyte globulin (ATG) and pegylated granulocyte colony-stimulating factor (GCSF) preserves C-peptide in established type 1 diabetes (T1D) (duration 4 months to 2 years). We hypothesized that 1) low-dose ATG/GCSF or 2) low-dose ATG alone would slow the decline of β-cell function in patients with new-onset T1D (duration <100 days). RESEARCH DESIGN AND METHODS A three-arm, randomized, double-masked, placebo-controlled trial was performed by the Type 1 Diabetes TrialNet Study Group in 89 subjects: 29 subjects randomized to ATG (2.5 mg/kg intravenously) followed by pegylated GCSF (6 mg subcutaneously every 2 weeks for 6 doses), 29 to ATG alone (2.5 mg/kg), and 31 to placebo. The primary end point was mean area under the curve (AUC) C-peptide during a 2-h mixed-meal tolerance test 1 year after initiation of therapy. Significance was defined as one-sided P value < 0.025. RESULTS The 1-year mean AUC C-peptide was significantly higher in subjects treated with ATG (0.646 nmol/L) versus placebo (0.406 nmol/L) (P = 0.0003) but not in those treated with ATG/GCSF (0.528 nmol/L) versus placebo (P = 0.031). HbA1c was significantly reduced at 1 year in subjects treated with ATG and ATG/GCSF, P = 0.002 and 0.011, respectively. CONCLUSIONS Low-dose ATG slowed decline of C-peptide and reduced HbA1c in new-onset T1D. Addition of GCSF did not enhance C-peptide preservation afforded by low-dose ATG. Future studies should be considered to determine whether low-dose ATG alone or in combination with other agents may prevent or delay the onset of the disease.
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Affiliation(s)
| | | | - Jay S. Skyler
- Diabetes Research Institute, University of Miami Miller School of Medicine, Miami, FL
| | | | | | | | | | | | - David Baidal
- Diabetes Research Institute, University of Miami Miller School of Medicine, Miami, FL
| | | | | | | | - Peter A. Gottlieb
- University of Colorado Barbara Davis Center for Childhood Diabetes, Aurora, CO
| | | | - Jennifer B. Marks
- Diabetes Research Institute, University of Miami Miller School of Medicine, Miami, FL
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Redondo MJ, Geyer S, Steck AK, Sharp S, Wentworth JM, Weedon MN, Antinozzi P, Sosenko J, Atkinson M, Pugliese A, Oram RA, Antinozzi P, Atkinson M, Battaglia M, Becker D, Bingley P, Bosi E, Buckner J, Colman P, Gottlieb P, Herold K, Insel R, Kay T, Knip M, Marks J, Moran A, Palmer J, Peakman M, Philipson L, Pugliese A, Raskin P, Rodriguez H, Roep B, Russell W, Schatz D, Wherrett D, Wilson D, Winter W, Ziegler A, Benoist C, Blum J, Chase P, Clare-Salzler M, Clynes R, Eisenbarth G, Fathman C, Grave G, Hering B, Kaufman F, Leschek E, Mahon J, Nanto-Salonen K, Nepom G, Orban T, Parkman R, Pescovitz M, Peyman J, Roncarolo M, Simell O, Sherwin R, Siegelman M, Steck A, Thomas J, Trucco M, Wagner J, Greenbaum ,CJ, Bourcier K, Insel R, Krischer JP, Leschek E, Rafkin L, Spain L, Cowie C, Foulkes M, Krause-Steinrauf H, Lachin JM, Malozowski S, Peyman J, Ridge J, Savage P, Skyler JS, Zafonte SJ, Kenyon NS, Santiago I, Sosenko JM, Bundy B, Abbondondolo M, Adams T, Amado D, Asif I, Boonstra M, Bundy B, Burroughs C, Cuthbertson D, Deemer M, Eberhard C, Fiske S, Ford J, Garmeson J, Guillette H, Browning G, Coughenour T, Sulk M, Tsalikan E, Tansey M, Cabbage J, Dixit N, Pasha S, King M, Adcock K, Geyer S, Atterberry H, Fox L, Englert K, Mauras N, Permuy J, Sikes K, Berhe T, Guendling B, McLennan L, Paganessi L, Hays B, Murphy C, Draznin M, Kamboj M, Sheppard S, Lewis V, Coates L, Moore W, Babar G, Bedard J, Brenson-Hughes D, Henderson C, Cernich J, Clements M, Duprau R, Goodman S, Hester L, Huerta-Saenz L, Karmazin A, Letjen T, Raman S, Morin D, Henry M, Bestermann W, Morawski E, White J, Brockmyer A, Bays R, Campbell S, Stapleton A, Stone N, Donoho A, Everett H, Heyman K, Hensley H, Johnson M, Marshall C, Skirvin N, Taylor P, Williams R, Ray L, Wolverton C, Nickels D, Dothard C, Hsiao B, Speiser P, Pellizzari M, Bokor L, Izuora K, Abdelnour S, Cummings P, Paynor S, Leahy M, Riedl M, Shockley S, Karges C, Saad R, Briones T, Casella S, Herz C, Walsh K, Greening J, Hay F, Hunt S, Sikotra N, Simons L, Keaton N, Karounos D, Oremus R, Dye L, Myers L, Ballard D, Miers W, Sparks R, Thraikill K, Edwards K, Fowlkes J, Kinderman A, Kemp S, Morales A, Holland L, Johnson L, Paul P, Ghatak A, Phelen K, Leyland H, Henderson T, Brenner D, Law P, Oppenheimer E, Mamkin I, Moniz C, Clarson C, Lovell M, Peters A, Ruelas V, Borut D, Burt D, Jordan M, Leinbach A, Castilla S, Flores P, Ruiz M, Hanson L, Green-Blair J, Sheridan R, Wintergerst K, Pierce G, Omoruyi A, Foster M, Linton C, Kingery S, Lunsford A, Cervantes I, Parker T, Price P, Urben J, Doughty I, Haydock H, Parker V, Bergman P, Liu S, Duncum S, Rodda C, Thomas A, Ferry R, McCommon D, Cockroft J, Perelman A, Calendo R, Barrera C, Arce-Nunez E, Lloyd J, Martinez Y, De la Portilla M, Cardenas I, Garrido L, Villar M, Lorini R, Calandra E, D’Annuzio G, Perri K, Minuto N, Malloy J, Rebora C, Callegari R, Ali O, Kramer J, Auble B, Cabrera S, Donohoue P, Fiallo-Scharer R, Hessner M, Wolfgram P, Maddox K, Kansra A, Bettin N, McCuller R, Miller A, Accacha S, Corrigan J, Fiore E, Levine R, Mahoney T, Polychronakos C, Martin J, Gagne V, Starkman H, Fox M, Chin D, Melchionne F, Silverman L, Marshall I, Cerracchio L, Cruz J, Viswanathan A, Miller J, Wilson J, Chalew S, Valley S, Layburn S, Lala A, Clesi P, Genet M, Uwaifo G, Charron A, Allerton T, Milliot E, Cefalu W, Melendez-Ramirez L, Richards R, Alleyn C, Gustafson E, Lizanna M, Wahlen J, Aleiwe S, Hansen M, Wahlen H, Moore M, Levy C, Bonaccorso A, Rapaport R, Tomer Y, Chia D, Goldis M, Iazzetti L, Klein M, Levister C, Waldman L, Muller S, Wallach E, Regelmann M, Antal Z, Aranda M, Reynholds C, Leech N, Wake D, Owens C, Burns M, Wotherspoon J, Nguyen T, Murray A, Short K, Curry G, Kelsey S, Lawson J, Porter J, Stevens S, Thomson E, Winship S, Wynn L, O’Donnell R, Wiltshire E, Krebs J, Cresswell P, Faherty H, Ross C, Vinik A, Barlow P, Bourcier M, Nevoret M, Couper J, Oduah V, Beresford S, Thalagne N, Roper H, Gibbons J, Hill J, Balleaut S, Brennan C, Ellis-Gage J, Fear L, Gray T, Pilger J, Jones L, McNerney C, Pointer L, Price N, Few K, Tomlinson D, Denvir L, Drew J, Randell T, Mansell P, Roberts A, Bell S, Butler S, Hooton Y, Navarra H, Roper A, Babington G, Crate L, Cripps H, Ledlie A, Moulds C, Sadler K, Norton R, Petrova B, Silkstone O, Smith C, Ghai K, Murray M, Viswanathan V, Henegan M, Kawadry O, Olson J, Stavros T, Patterson L, Ahmad T, Flores B, Domek D, Domek S, Copeland K, George M, Less J, Davis T, Short M, Tamura R, Dwarakanathan A, O’Donnell P, Boerner B, Larson L, Phillips M, Rendell M, Larson K, Smith C, Zebrowski K, Kuechenmeister L, Wood K, Thevarayapillai M, Daniels M, Speer H, Forghani N, Quintana R, Reh C, Bhangoo A, Desrosiers P, Ireland L, Misla T, Xu P, Torres C, Wells S, Villar J, Yu M, Berry D, Cook D, Soder J, Powell A, Ng M, Morrison M, Young K, Haslam Z, Lawson M, Bradley B, Courtney J, Richardson C, Watson C, Keely E, DeCurtis D, Vaccarcello-Cruz M, Torres Z, Alies P, Sandberg K, Hsiang H, Joy B, McCormick D, Powell A, Jones H, Bell J, Hargadon S, Hudson S, Kummer M, Badias F, Sauder S, Sutton E, Gensel K, Aguirre-Castaneda R, Benavides Lopez V, Hemp D, Allen S, Stear J, Davis E, Jones T, Baker A, Roberts A, Dart J, Paramalingam N, Levitt Katz L, Chaudhary N, Murphy K, Willi S, Schwartzman B, Kapadia C, Larson D, Bassi M, McClellan D, Shaibai G, Kelley L, Villa G, Kelley C, Diamond R, Kabbani M, Dajani T, Hoekstra F, Magorno M, Beam C, Holst J, Chauhan V, Wilson N, Bononi P, Sperl M, Millward A, Eaton M, Dean L, Olshan J, Renna H, Boulware D, Milliard C, Snyder D, Beaman S, Burch K, Chester J, Ahmann A, Wollam B, DeFrang D, Fitch R, Jahnke K, Bounmananh L, Hanavan K, Klopfenstein B, Nicol L, Bergstrom R, Noland T, Brodksy J, Bacon L, Quintos J, Topor L, Bialo S, Bream S, Bancroft B, Soto A, Lagarde W, Lockemer H, Vanderploeg T, Ibrahim M, Huie M, Sanchez V, Edelen R, Marchiando R, Freeman D, Palmer J, Repas T, Wasson M, Auker P, Culbertson J, Kieffer T, Voorhees D, Borgwardt T, DeRaad L, Eckert K, Gough J, Isaacson E, Kuhn H, Carroll A, Schubert M, Francis G, Hagan S, Le T, Penn M, Wickham E, Leyva C, Ginem J, Rivera K, Padilla J, Rodriguez I, Jospe N, Czyzyk J, Johnson B, Nadgir U, Marlen N, Prakasam G, Rieger C, Granger M, Glaser N, Heiser E, Harris B, Foster C, Slater H, Wheeler K, Donaldson D, Murray M, Hale D, Tragus R, Holloway M, Word D, Lynch J, Pankratz L, Rogers W, Newfield R, Holland S, Hashiguchi M, Gottschalk M, Philis-Tsimikas A, Rosal R, Kieffer M, Franklin S, Guardado S, Bohannon N, Garcia M, Aguinaldo T, Phan J, Barraza V, Cohen D, Pinsker J, Khan U, Lane P, Wiley J, Jovanovic L, Misra P, Wright M, Cohen D, Huang K, Skiles M, Maxcy S, Pihoker C, Cochrane K, Nallamshetty L, Fosse J, Kearns S, Klingsheim M, Wright N, Viles L, Smith H, Heller S, Cunningham M, Daniels A, Zeiden L, Parrimon Y, Field J, Walker R, Griffin K, Bartholow L, Erickson C, Howard J, Krabbenhoft B, Sandman C, Vanveldhuizen A, Wurlger J, Paulus K, Zimmerman A, Hanisch K, Davis-Keppen L, Cotterill A, Kirby J, Harris M, Schmidt A, Kishiyama C, Flores C, Milton J, Ramiro J, Martin W, Whysham C, Yerka A, Freels T, Hassing J, Webster J, Green R, Carter P, Galloway J, Hoelzer D, Ritzie AQL, Roberts S, Said S, Sullivan P, Allen H, Reiter E, Feinberg E, Johnson C, Newhook L, Hagerty D, White N, Sharma A, Levandoski L, Kyllo J, Johnson M, Benoit C, Iyer P, Diamond F, Hosono H, Jackman S, Barette L, Jones P, Shor A, Sills I, Bzdick S, Bulger J, Weinstock R, Douek I, Andrews R, Modgill G, Gyorffy G, Robin L, Vaidya N, Song X, Crouch S, O’Brien K, Thompson C, Thorne N, Blumer J, Kalic J, Klepek L, Paulett J, Rosolowski B, Horner J, Terry A, Watkins M, Casey J, Carpenter K, Burns C, Horton J, Pritchard C, Soetaert D, Wynne A, Kaiserman K, Halvorson M, Weinberger J, Chin C, Molina O, Patel C, Senguttuvan R, Wheeler M, Furet O, Steuhm C, Jelley D, Goudeau S, Chalmers L, Wootten M, Greer D, Panagiotopoulos C, Metzger D, Nguyen D, Horowitz M, Christiansen M, Glades E, Morimoto C, Macarewich M, Norman R, Harding P, Patin K, Vargas C, Barbanica A, Yu A, Vaidyanathan P, Osborne W, Mehra R, Kaster S, Neace S, Horner J, McDonough S, Reeves G, Cordrey C, Marrs L, Miller T, Dowshen S, Doyle D, Walker S, Catte D, Dean H, Drury-Brown M, McGee PF, Hackman B, Lee M, Malkani S, Cullen K, Johnson K, Hampton P, McCarrell M, Curtis C, Paul E, Zambrano Y, Hess KO, Phoebus D, Quinlan S, Raiden E, Batts E, Buddy C, Kirpatrick K, Ramey M, Shultz A, Webb C, Romesco M, Fradkin J, Blumberg E, Beck G, Brillon D, Gubitosi-Klug R, Laffel L, Veatch R, Wallace D, Braun J, Lernmark A, Lo B, Mitchell H, Naji A, Nerup J, Orchard T, Steffes M, Tsiatis A, Zinman B, Loechelt B, Baden L, Green M, Weinberg A, Marcovina S, Palmer JP, Weinberg A, Yu L, Babu S, Winter W, Eisenbarth GS, Bingley P, Clynes R, DiMeglio L, Eisenbarth G, Hays B, Marks J, Matheson D, Rodriguez H, Wilson D, Redondo MJ, Gomez D, Zheng X, Pena S, Pietropaolo M, Batts E, Brown T, Buckner J, Dove A, Hammond M, Hefty D, Klein J, Kuhns K, Letlau M, Lord S, McCulloch-Olson M, Miller L, Nepom G, Odegard J, Ramey M, Sachter E, St. Marie M, Stickney K, VanBuecken D, Vellek B, Webber C, Allen L, Bollyk J, Hilderman N, Ismail H, Lamola S, Sanda S, Vendettuoli H, Tridgell D, Monzavi R, Bock M, Fisher L, Halvorson M, Jeandron D, Kim M, Wood J, Geffner M, Kaufman F, Parkman R, Salazar C, Goland R, Clynes R, Cook S, Freeby M, Gallagher MP, Gandica R, Greenberg E, Kurland A, Pollak S, Wolk A, Chan M, Koplimae L, Levine E, Smith K, Trast J, DiMeglio L, Blum J, Evans-Molina C, Hufferd R, Jagielo B, Kruse C, Patrick V, Rigby M, Spall M, Swinney K, Terrell J, Christner L, Ford L, Lynch S, Menendez M, Merrill P, Pescovitz M, Rodriguez H, Alleyn C, Baidal D, Fay S, Gaglia J, Resnick B, Szubowicz S, Weir G, Benjamin R, Conboy D, deManbey A, Jackson R, Jalahej H, Orban T, Ricker A, Wolfsdorf J, Zhang HH, Wilson D, Aye T, Baker B, Barahona K, Buckingham B, Esrey K, Esrey T, Fathman G, Snyder R, Aneja B, Chatav M, 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Eckert J, Ehler A, Eisenbarth G, Fain P, Fiallo-Scharer R, Frank N, Goettle H, Haarhues M, Harris S, Horton L, Hutton J, Jeffrrey J, Jenison R, Jones K, Kastelic W, King MA, Lehr D, Lungaro J, Mason K, Maurer H, Nguyen L, Proto A, Realsen J, Schmitt K, Schwartz M, Skovgaard S, Smith J, Vanderwel B, Voelmle M, Wagner R, Wallace A, Walravens P, Weiner L, Westerhoff B, Westfall E, Widmer K, Wright H, Schatz D, Abraham A, Atkinson M, Cintron M, Clare-Salzler M, Ferguson J, Haller M, Hosford J, Mancini D, Rohrs H, Silverstein J, Thomas J, Winter W, Cole G, Cook R, Coy R, Hicks E, Lewis N, Marks J, Pugliese A, Blaschke C, Matheson D, Sanders-Branca N, Sosenko J, Arazo L, Arce R, Cisneros M, Sabbag S, Moran A, Gibson C, Fife B, Hering B, Kwong C, Leschyshyn J, Nathan B, Pappenfus B, Street A, Boes MA, Eck SP, Finney L, Fischer TA, Martin A, Muzamhindo CJ, Rhodes M, Smith J, Wagner J, Wood B, Becker D, Delallo K, Diaz A, Elnyczky B, Libman I, Pasek B, Riley K, Trucco M, Copemen B, Gwynn D, Toledo F, Rodriguez H, Bollepalli S, Diamond F, Eyth E, Henson D, Lenz A, Shulman D, Raskin P, Adhikari S, Dickson B, Dunnigan E, Lingvay I, Pruneda L, Ramos-Roman M, Raskin P, Rhee C, Richard J, Siegelman M, Sturges D, Sumpter K, White P, Alford M, Arthur J, Aviles-Santa ML, Cordova E, Davis R, Fernandez S, Fordan S, Hardin T, Jacobs A, Kaloyanova P, Lukacova-Zib I, Mirfakhraee S, Mohan A, Noto H, Smith O, Torres N, Wherrett D, Balmer D, Eisel L, Kovalakovska R, Mehan M, Sultan F, Ahenkorah B, Cevallos J, Razack N, Ricci MJ, Rhode A, Srikandarajah M, Steger R, Russell WE, Black M, Brendle F, Brown A, Moore D, Pittel E, Robertson A, Shannon A, Thomas JW, Herold K, Feldman L, Sherwin R, Tamborlane W, Weinzimer S, Toppari J, Kallio T, Kärkkäinen M, Mäntymäki E, Niininen T, Nurmi B, Rajala P, Romo M, Suomenrinne S, Näntö-Salonen K, Simell O, Simell T, Bosi E, Battaglia M, Bianconi E, Bonfanti R, Grogan P, Laurenzi A, Martinenghi S, Meschi F, Pastore M, Falqui L, Muscato MT, Viscardi M, 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Trunnel S, Transue D, Surhigh J, Bezzaire D, Moltz K, Zacharski E, Henske J, Desai S, Frizelis K, Khan F, Sjoberg R, Allen K, Manning P, Hendry G, Taylor B, Jones S, Couch R, Danchak R, Lieberman D, Strader W, Bencomo M, Bailey T, Bedolla L, Roldan C, Moudiotis C, Vaidya B, Anning C, Bunce S, Estcourt S, Folland E, Gordon E, Harrill C, Ireland J, Piper J, Scaife L, Sutton K, Wilkins S, Costelloe M, Palmer J, Casas L, Miller C, Burgard M, Erickson C, Hallanger-Johnson J, Clark P, Taylor W, Galgani J, Banerjee S, Banda C, McEowen D, Kinman R, Lafferty A, Gillett S, Nolan C, Pathak M, Sondrol L, Hjelle T, Hafner S, Kotrba J, Hendrickson R, Cemeroglu A, Symington T, Daniel M, Appiagyei-Dankah Y, Postellon D, Racine M, Kleis L, Barnes K, Godwin S, McCullough H, Shaheen K, Buck G, Noel L, Warren M, Weber S, Parker S, Gillespie I, Nelson B, Frost C, Amrhein J, Moreland E, Hayes A, Peggram J, Aisenberg J, Riordan M, Zasa J, Cummings E, Scott K, Pinto T, Mokashi A, McAssey K, Helden E, Hammond P, Dinning L, Rahman S, Ray S, Dimicri C, Guppy S, Nielsen H, Vogel C, Ariza C, Morales L, Chang Y, Gabbay R, Ambrocio L, Manley L, Nemery R, Charlton W, Smith P, Kerr L, Steindel-Kopp B, Alamaguer M, Tabisola-Nuesca E, Pendersen A, Larson N, Cooper-Olviver H, Chan D, Fitz-Patrick D, Carreira T, Park Y, Ruhaak R, Liljenquist D. A Type 1 Diabetes Genetic Risk Score Predicts Progression of Islet Autoimmunity and Development of Type 1 Diabetes in Individuals at Risk. Diabetes Care 2018; 41:1887-1894. [PMID: 30002199 PMCID: PMC6105323 DOI: 10.2337/dc18-0087] [Citation(s) in RCA: 86] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/11/2018] [Accepted: 06/06/2018] [Indexed: 02/03/2023]
Abstract
OBJECTIVE We tested the ability of a type 1 diabetes (T1D) genetic risk score (GRS) to predict progression of islet autoimmunity and T1D in at-risk individuals. RESEARCH DESIGN AND METHODS We studied the 1,244 TrialNet Pathway to Prevention study participants (T1D patients' relatives without diabetes and with one or more positive autoantibodies) who were genotyped with Illumina ImmunoChip (median [range] age at initial autoantibody determination 11.1 years [1.2-51.8], 48% male, 80.5% non-Hispanic white, median follow-up 5.4 years). Of 291 participants with a single positive autoantibody at screening, 157 converted to multiple autoantibody positivity and 55 developed diabetes. Of 953 participants with multiple positive autoantibodies at screening, 419 developed diabetes. We calculated the T1D GRS from 30 T1D-associated single nucleotide polymorphisms. We used multivariable Cox regression models, time-dependent receiver operating characteristic curves, and area under the curve (AUC) measures to evaluate prognostic utility of T1D GRS, age, sex, Diabetes Prevention Trial-Type 1 (DPT-1) Risk Score, positive autoantibody number or type, HLA DR3/DR4-DQ8 status, and race/ethnicity. We used recursive partitioning analyses to identify cut points in continuous variables. RESULTS Higher T1D GRS significantly increased the rate of progression to T1D adjusting for DPT-1 Risk Score, age, number of positive autoantibodies, sex, and ethnicity (hazard ratio [HR] 1.29 for a 0.05 increase, 95% CI 1.06-1.6; P = 0.011). Progression to T1D was best predicted by a combined model with GRS, number of positive autoantibodies, DPT-1 Risk Score, and age (7-year time-integrated AUC = 0.79, 5-year AUC = 0.73). Higher GRS was significantly associated with increased progression rate from single to multiple positive autoantibodies after adjusting for age, autoantibody type, ethnicity, and sex (HR 2.27 for GRS >0.295, 95% CI 1.47-3.51; P = 0.0002). CONCLUSIONS The T1D GRS independently predicts progression to T1D and improves prediction along T1D stages in autoantibody-positive relatives.
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Affiliation(s)
- Maria J. Redondo
- Texas Children’s Hospital, Baylor College of Medicine, Houston, TX
| | | | - Andrea K. Steck
- Barbara Davis Center for Childhood Diabetes, University of Colorado School of Medicine, Aurora, CO
| | - Seth Sharp
- Institute of Biomedical and Clinical Science, University of Exeter, Exeter, U.K
| | - John M. Wentworth
- Walter and Eliza Hall Institute of Medical Research and Royal Melbourne Hospital, Parkville, Victoria, Australia
| | - Michael N. Weedon
- Institute of Biomedical and Clinical Science, University of Exeter, Exeter, U.K
| | | | | | | | | | - Richard A. Oram
- Institute of Biomedical and Clinical Science, University of Exeter, Exeter, U.K
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Cavallerano J, Cavicchi R, Ganda O, Hamdy O, Kirby R, Murtha T, Schlossman D, Shah S, Sharuk G, Silva P, Silver P, Stockman M, Sun J, Weimann E, Wolpert H, Aiello L, Jacobson A, Rand L, Rosenzwieg J, Nathan D, Larkin M, Christofi M, Folino K, Godine J, Lou P, Stevens C, Anderson E, Bode H, Brink S, Cornish C, Cros D, Delahanty L, eManbey ., Haggan C, Lynch J, McKitrick C, Norman D, Moore D, Ong M, Taylor C, Zimbler D, Crowell S, Fritz S, Hansen K, Gauthier‐Kelly C, Service F, Ziegler G, Barkmeier A, Schmidt L, French B, Woodwick R, Rizza R, Schwenk W, Haymond M, Pach J, Mortenson J, Zimmerman B, Lucas A, Colligan R, Luttrell L, Lopes‐Virella M, Caulder S, Pittman C, Patel N, Lee K, Nutaitis M, Fernandes J, Hermayer K, Kwon S, Blevins A, Parker J, Colwell J, Lee D, Soule J, Lindsey P, Bracey M, Farr A, Elsing S, Thompson T, Selby J, Lyons T, Yacoub‐Wasef S, Szpiech M, Wood D, Mayfield R, Molitch M, Adelman D, Colson S, Jampol L, Lyon A, Gill M, Strugula Z, Kaminski L, Mirza R, Simjanoski E, Ryan D, Johnson C, Wallia A, Ajroud‐Driss S, Astelford P, Leloudes N, Degillio A, Schaefer B, Mudaliar S, Lorenzi G, Goldbaum M, Jones K, Prince M, Swenson M, Grant I, Reed R, Lyon R, Kolterman O, Giotta M, Clark T, Friedenberg G, Sivitz W, Vittetoe B, Kramer J, Bayless M, Zeitler R, Schrott H, Olson N, Snetselaar L, Hoffman R, MacIndoe J, Weingeist T, Fountain C, Miller R, Johnsonbaugh S, Patronas M, Carney M, Mendley S, Salemi P, Liss R, Hebdon M, Counts D, Donner T, Gordon J, Hemady R, Kowarski A, Ostrowski D, Steidl S, Jones B, Herman W, Martin C, Pop‐Busui R, Greene D, Stevens M, Burkhart N, Sandford T, Floyd J, Bantle J, Flaherty N, Terry J, Koozekanani D, Montezuma S, Wimmergren N, Rogness B, Mech M, Strand T, Olson J, McKenzie L, Kwong C, Goetz F, Warhol R, Hainsworth D, Goldstein D, Hitt S, Giangiacomo J, Schade D, Canady J, Burge M, Das A, Avery R, Ketai L, Chapin J, Schluter M, Rich J, Johannes C, Hornbeck D, Schutta M, Bourne P, Brucker A, Braunstein S, Schwartz S, Maschak‐Carey B, Baker L, Orchard T, Cimino L, Songer T, Doft B, Olson S, Becker D, Rubinstein D, Bergren R, Fruit J, Hyre R, Palmer C, Silvers N, Lobes L, Rath PP, Conrad P, Yalamanchi S, Wesche J, Bratkowksi M, Arslanian S, Rinkoff J, Warnicki J, Curtin D, Steinberg D, Vagstad G, Harris R, Steranchak L, Arch J, Kelly K, Ostrosaka P, Guiliani M, Good M, Williams T, Olsen K, Campbell A, Shipe C, Conwit R, Finegold D, Zaucha M, Drash A, Morrison A, Malone J, Bernal M, Pavan P, Grove N, Tanaka E, McMillan D, Vaccaro‐Kish J, Babbione L, Solc H, DeClue T, Dagogo‐Jack S, Wigley C, Ricks H, Kitabchi A, Chaum E, Murphy M, Moser S, Meyer D, Iannacone A, Yoser S, Bryer‐Ash M, Schussler S, Lambeth H, Raskin P, Strowig S, Basco M, Cercone S, Zinman B, Barnie A, Devenyi R, Mandelcorn M, Brent M, Rogers S, Gordon A, Bakshi N, Perkins B, Tuason L, Perdikaris F, Ehrlich R, Daneman D, Perlman K, Ferguson S, Palmer J, Fahlstrom R, de Boer I, Kinyoun J, Van Ottingham L, Catton S, Ginsberg J, McDonald C, Harth J, Driscoll M, Sheidow T, Mahon J, Canny C, Nicolle D, Colby P, Dupre J, Hramiak I, Rodger N, Jenner M, Smith T, Brown W, May M, Lipps Hagan J, Agarwal A, Adkins T, Lorenz R, Feman S, Survant L, White N, Levandoski L, Grand G, Thomas M, Joseph D, Blinder K, Shah G, Burgess D, Boniuk I, Santiago J, Tamborlane W, Gatcomb P, Stoessel K, Ramos P, Fong K, Ossorio P, Ahern J, Gubitosi‐Klug R, Meadema‐Mayer L, Beck C, Farrell K, Genuth S, Quin J, Gaston P, Palmert M, Trail R, Dahms W, Lachin J, Backlund J, Bebu I, Braffett B, Diminick L, Gao X, Hsu W, Klumpp K, Pan H, Trapani V, Cleary P, McGee P, Sun W, Villavicencio S, Anderson K, Dews L, Younes N, Rutledge B, Chan K, Rosenberg D, Petty B, Determan A, Kenny D, Williams C, Cowie C, Siebert C, Steffes M, Arends V, Bucksa J, Nowicki M, Chavers B, O'Leary D, Polak J, Harrington A, Funk L, Crow R, Gloeb B, Thomas S, O'Donnell C, Soliman E, Zhang Z, Li Y, Campbell C, Keasler L, Hensley S, Hu J, Barr M, Taylor T, Prineas R, Feldman E, Albers J, Low P, Sommer C, Nickander K, Speigelberg T, Pfiefer M, Schumer M, Moran M, Farquhar J, Ryan C, Sandstrom D, Williams T, Geckle M, Cupelli E, Thoma F, Burzuk B, Woodfill T, Danis R, Blodi B, Lawrence D, Wabers H, Gangaputra S, Neill S, Burger M, Dingledine J, Gama V, Sussman R, Davis M, Hubbard L, Budoff M, Darabian S, Rezaeian P, Wong N, Fox M, Oudiz R, Kim L, Detrano R, Cruickshanks K, Dalton D, Bainbridge K, Lima J, Bluemke D, Turkbey E, der Geest ., Liu C, Malayeri A, Jain A, Miao C, Chahal H, Jarboe R, Nathan D, Monnier V, Sell D, Strauch C, Hazen S, Pratt A, Tang W, Brunzell J, Purnell J, Natarajan R, Miao F, Zhang L, Chen Z, Paterson A, Boright A, Bull S, Sun L, Scherer S, Lopes‐Virella M, Lyons T, Jenkins A, Klein R, Virella G, Jaffa A, Carter R, Stoner J, Garvey W, Lackland D, Brabham M, McGee D, Zheng D, Mayfield R, Maynard J, Wessells H, Sarma A, Jacobson A, Dunn R, Holt S, Hotaling J, Kim C, Clemens Q, Brown J, McVary K. Oxidative Stress and Cardiovascular Risk in Type 1 Diabetes Mellitus: Insights From the DCCT/EDIC Study. J Am Heart Assoc 2018. [PMCID: PMC6015340 DOI: 10.1161/jaha.117.008368] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Background
Hyperglycemia leading to increased oxidative stress is implicated in the increased risk for the development of macrovascular and microvascular complications in patients with type 1 diabetes mellitus.
Methods and Results
A random subcohort of 349 participants was selected from the
DCCT
/
EDIC
(Diabetes Control and Complications Trial/Epidemiology of Diabetes Interventions and Complications) cohort. This included 320 controls and 29 cardiovascular disease cases that were augmented with 98 additional known cases to yield a case cohort of 447 participants (320 controls, 127 cases). Biosamples from
DCCT
baseline, year 1, and closeout of
DCCT
, and 1 to 2 years post‐
DCCT
(
EDIC
years 1 and 2) were measured for markers of oxidative stress, including plasma myeloperoxidase, paraoxonase activity, urinary F
2α
isoprostanes, and its metabolite, 2,3 dinor‐8
iso
prostaglandin F
2α
. Following adjustment for glycated hemoblobin and weighting the observations inversely proportional to the sampling selection probabilities, higher paraoxonase activity, reflective of antioxidant activity, and 2,3 dinor‐8
iso
prostaglandin F
2α
, an oxidative marker, were significantly associated with lower risk of cardiovascular disease (−4.5% risk for 10% higher paraoxonase,
P
<0.003; −5.3% risk for 10% higher 2,3 dinor‐8
iso
prostaglandin F
2α
,
P
=0.0092). In contrast, the oxidative markers myeloperoxidase and F
2α
isoprostanes were not significantly associated with cardiovascular disease after adjustment for glycated hemoblobin. There were no significant differences between
DCCT
intensive and conventional treatment groups in the change in all biomarkers across time segments.
Conclusions
Heightened antioxidant activity (rather than diminished oxidative stress markers) is associated with lower cardiovascular disease risk in type 1 diabetes mellitus, but these biomarkers did not change over time with intensification of glycemic control.
Clinical Trial Registration
URL
:
https://www.clinicaltrials.gov
. Unique identifiers:
NCT
00360815 and
NCT
00360893.
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Affiliation(s)
- W.H. Wilson Tang
- Department of Cellular and Molecular Medicine, Lerner Research Institute, Cleveland Clinic, Cleveland, OH
- Department of Cardiovascular Medicine, Heart and Vascular Institute, Cleveland Clinic, Cleveland, OH
| | - Paula McGee
- The Biostatistics Center, George Washington University, Rockville, MD
| | - John M. Lachin
- The Biostatistics Center, George Washington University, Rockville, MD
| | - Daniel Y. Li
- Department of Cellular and Molecular Medicine, Lerner Research Institute, Cleveland Clinic, Cleveland, OH
| | | | - Stanley L. Hazen
- Department of Cellular and Molecular Medicine, Lerner Research Institute, Cleveland Clinic, Cleveland, OH
- Department of Cardiovascular Medicine, Heart and Vascular Institute, Cleveland Clinic, Cleveland, OH
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Henning S, Fernandez M, Mahon J, Duff R, Azarafrooz F, Guy Y, Salzman A, Le Poole C. 1262 HSP70iQ435A-encoding DNA repigments vitiligo lesions in Sinclair swine. J Invest Dermatol 2018. [DOI: 10.1016/j.jid.2018.03.1277] [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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Mahon J, Helo S, Ellen J, Feustel P, Welliver R, McCullough A. 037 A Randomized Double Blinded Placebo Controlled Crossover Pilot Trial between Anastrozole and Clomiphene to Evaluate Improvement in Hypogonadal Symptoms and Erectile. J Sex Med 2018. [DOI: 10.1016/j.jsxm.2017.11.056] [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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Baxter M, Hudson R, Mahon J, Bartlett C, Samyshkin Y, Alexiou D, Hex N. Estimating the impact of better management of glycaemic control in adults with Type 1 and Type 2 diabetes on the number of clinical complications and the associated financial benefit. Diabet Med 2016; 33:1575-1581. [PMID: 26773733 DOI: 10.1111/dme.13062] [Citation(s) in RCA: 85] [Impact Index Per Article: 10.6] [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] [Accepted: 01/11/2016] [Indexed: 12/18/2022]
Abstract
AIM To estimate potential cost avoidance through modest and achievable improvements in glycaemic control in adults with Type 1 or Type 2 diabetes mellitus in the UK healthcare system. METHODS The IMS Core Diabetes Model was used to examine the impact of improved glycaemic control (indicated by reduction in HbA1c level), in a representative cohort of adults with Type 1 or Type 2 diabetes. The cumulative incidence of microvascular and macrovascular complications was modelled across 5-year periods to a 25-year time horizon. Complication costs were applied to the data to estimate potential accrued cost avoidance. RESULTS Significant cost avoidance of ~£340 m is apparent in the first 5 years, increasing to ~£5.5bn after 25 years of sustained improvement in control. The overwhelming majority of cost avoidance arises from reductions in microvascular complications. In people with Type 1 diabetes the greatest cost avoidance comes from a reduction in renal disease (74% of cost avoidance), while in people with Type 2 diabetes it is generated by a reduction in foot ulcers, amputations and neuropathy: 57% cost avoidance). Greater cost reduction is accrued more rapidly in people with higher starting HbA1c levels. CONCLUSION Modest improvements in glycaemic control generate significant reductions in the incidence and, therefore, cost of microvascular complications in people with Type 1 or Type 2 diabetes. This study provides clear support for the premise that prioritized and sustained investment in early and better intervention can provide concrete financial benefits in both the short and longer term.
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Affiliation(s)
| | | | - J Mahon
- York Health Economics Consortium Ltd, University of York, York, UK
| | - C Bartlett
- York Health Economics Consortium Ltd, University of York, York, UK
| | | | | | - N Hex
- York Health Economics Consortium Ltd, University of York, York, UK
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Bolt R, Yates JM, Mahon J, Bakri I. Evidence of frequent dosing errors in paediatrics and intervention to reduce such prescribing errors. J Clin Pharm Ther 2014; 39:78-83. [DOI: 10.1111/jcpt.12114] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2011] [Accepted: 10/31/2013] [Indexed: 11/29/2022]
Affiliation(s)
- R. Bolt
- Department of Oral Surgery; School of Clinical Dentistry; University of Sheffield; Sheffield UK
| | - J. M. Yates
- Oral and Maxillofacial Surgery; School of Dentistry; University of Manchester; Manchester UK
| | - J. Mahon
- Oral and Maxillofacial Surgery; Sheffield Teaching Hospitals NHS Trust; Sheffield UK
| | - I. Bakri
- Department of Oral Surgery; Sheffield Teaching Hospitals NHS Trust; Sheffield UK
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Elhassan Y, Mahon J, Kiernan D, O Brien T. A greenstick fracture of the patella: a unique fracture in CP crouch gait. Case Reports 2013; 2013:bcr-2013-009717. [DOI: 10.1136/bcr-2013-009717] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
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17
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Hockenhull J, Elremeli M, Cherry MG, Mahon J, Lai M, Darroch J, Oyee J, Boland A, Dickson R, Dundar Y, Boyle R. A systematic review of the clinical effectiveness and cost-effectiveness of Pharmalgen® for the treatment of bee and wasp venom allergy. Health Technol Assess 2012; 16:III-IV, 1-110. [PMID: 22409877 DOI: 10.3310/hta16120] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
BACKGROUND Each year in the UK, there are between two and nine deaths from anaphylaxis caused by bee and wasp venom. Anaphylactic reactions can occur rapidly following a sting and can progress to a life-threatening condition within minutes. To avoid further reactions in people with a history of anaphylaxis to bee and wasp venom, the use of desensitisation, through a process known as venom immunotherapy (VIT), has been investigated and is in use in the UK. VIT consists of subcutaneous injections of increasing amounts of purified bee and/or wasp venom extract. Pharmalgen® products (ALK Abelló) have had UK marketing authorisation for VIT (as well as diagnosis) of allergy to bee venom (using Pharmalgen Bee Venom) and wasp venom (using Pharmalgen Wasp Venom) since March 1995. OBJECTIVE This review assessed the clinical effectiveness and cost-effectiveness of Pharmalgen in providing immunotherapy to individuals with a history of type 1 [immunoglobulin E (IgE)-mediated] systemic allergic reaction to bee and wasp venom. DATA SOURCES A comprehensive search strategy using a combination of index terms (e.g. Pharmalgen) and free-text words (e.g. allerg$) was developed and used to interrogate the following electronic databases: EMBASE, MEDLINE, The Cochrane Library. REVIEW METHODS Papers were included if they studied venom immunotherapy using Pharmalgen (PhVIT) in patients who had previously experienced a systemic reaction to a bee and/or a wasp sting. Comparators were any alternative treatment options available in the NHS without VIT. Included outcomes were systemic reactions, local reactions, mortality, anxiety related to the possibility of future allergic reactions, health-related quality of life (QoL) and adverse reactions (ARs) to treatment. Cost-effectiveness outcomes included cost per quality-adjusted life-years (QALYs) gained. Because of the small number of published randomised controlled trials (RCTs), no meta-analyses were conducted. A de novo economic model was developed to assess the cost-effectiveness of PhVIT plus high-dose antihistamine (HDA) plus adrenaline auto-injector (AAI) plus avoidance advice in relation to two comparators. RESULTS A total of 1065 citations were identified, of which 266 full-text papers were obtained. No studies were identified that compared PhVIT with any of the outlined comparators. When these criteria were widened to include different protocols and types of PhVIT administration, four RCTs and five quasi-experimental studies were identified for inclusion. The quality of included studies was poor, and none was conducted in the UK. Eight studies reported re-sting data (systemic reactions ranged from 0.0% to 36.4%) and ARs (systemic reactions ranged from 0.0% to 38.1% and none was fatal). No included studies reported quality of life. No published economic evidence relevant to the decision problem was identified. The manufacturer of PhVIT did not submit any clinical effectiveness or cost-effectiveness evidence to the National Institute for Health and Clinical Excellence in support of PhVIT. The results of the Assessment Group's (AG) base-case analysis show that the comparison of PhVIT + HDA + AAI versus AAI + HDA yields an incremental cost-effectiveness ratio (ICER) of £18,065,527 per QALY gained; PhVIT + HDA + AAI versus avoidance advice only yields an ICER of £7,627,835 per QALY gained. The results of the sensitivity analyses and scenario analyses showed that the results of the base-case economic evaluation were robust for every plausible change in parameter made. The results of the 'High Risk of Sting Patients' subgroup analysis show that PhVIT + HDA + AAI dominates both AAI + HDA and avoidance advice only (i.e. is less expensive and more effective). The 'VIT Anxiety QoL Improvement' subgroup analysis shows that PhVIT + HDA + AAI versus HDA + AAI has an ICER of £23,868 per QALY gained, and PhVIT + HDA + AAI versus avoidance advice only yields an ICER of £25,661 per QALY gained. LIMITATIONS This review is limited to the use of Pharmalgen in the treatment of hymenoptera venom allergy and therefore does not assess the effectiveness of VIT in general. CONCLUSIONS The current use of PhVIT in clinical practice in the NHS appears to be based on limited and poor-quality clinical effectiveness research. Available evidence indicates that sting reactions following the use of PhVIT are low and that the ARs related to treatment are minor and easily treatable. The results of the AG's de novo economic evaluation demonstrate that PhVIT + AAI + HDA compared with AAI + HDA and with avoidance advice only yields ICERs in the range of £8-20M per QALY gained. Two subgroups ('High Risk of Sting Patients' and 'VIT Anxiety QoL Improvement') were considered in the economic evaluation and the AG concludes that the use of PhVIT + AAI + HDA may be cost-effective in both groups. Future research should focus on clearly identifying groups of patients most likely to benefit from treatment and ensure that clinical practice is focussed on these groups. Furthermore, given the paucity of UK data in this area it would be informative if data could be collected routinely when VIT is administered in the NHS (e.g. rates of systemic adverse reactions to VIT, rates of systemic reactions to bee/wasp stings). FUNDING The National Institute for Health Research Health Technology Assessment programme.
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Affiliation(s)
- J Hockenhull
- Liverpool Reviews and Implementation Group, Liverpool, UK
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Hoblit S, Sandorfi AM, Ardashev K, Bade C, Bartalini O, Blecher M, Caracappa A, D'Angelo A, d'Angelo A, Di Salvo R, Fantini A, Gibson C, Glückler H, Hicks K, Honig A, Kageya T, Khandaker M, Kistner OC, Kizilgul S, Kucuker S, Lehmann A, Lowry M, Lucas M, Mahon J, Miceli L, Moricciani D, Norum B, Pap M, Preedom B, Seyfarth H, Schaerf C, Ströher H, Thorn CE, Whisnant CS, Wang K, Wei X. Measurements of H-->D-->(gamma-->,pi) and implications for the convergence of the Gerasimov-Drell-Hern integral. Phys Rev Lett 2009; 102:172002. [PMID: 19518773 DOI: 10.1103/physrevlett.102.172002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/25/2008] [Indexed: 05/27/2023]
Abstract
We report new measurements of inclusive pi production from frozen-spin HD for polarized photon beams covering the Delta(1232) resonance. These provide data simultaneously on both H and D with nearly complete angular distributions of the spin-difference cross sections entering the Gerasimov-Drell-Hearn (GDH) sum rule. Recent results from Mainz and Bonn exceed the GDH prediction for the proton by 22 microb, suggesting as yet unmeasured high-energy components. Our pi0 data reveal a different angular dependence than assumed in Mainz analyses and integrate to a value that is 18 microb lower, suggesting a more rapid convergence. Our results for deuterium are somewhat lower than published data, considerably more precise, and generally lower than available calculations.
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Affiliation(s)
- S Hoblit
- Department of Physics, University of Virginia, Charlottesville, Virginia 22901, USA.
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Rodrigues G, Bauman G, Lock M, D'Souza D, Mahon J. Development and psychometric properties of the Prostate Cancer Radiation Toxicity Questionnaire. J Clin Oncol 2007. [DOI: 10.1200/jco.2007.25.18_suppl.15631] [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: 11/20/2022] Open
Abstract
15631 Background: The objective of this study was to construct a prostate cancer late radiation toxicity (PCRT) questionnaire with associated health-related quality of life (HRQoL) domains. Methods: A literature review of prostate cancer toxicity scales and HRQoL instruments generated a list of potential items for inclusion into the PCRT. An initial questionnaire was subjected to both patient (n=8) and expert (n=7) opinion. A pilot study (n=37) assessed patient feedback, ease of administration, and acceptance. Item reduction (n=100) based on response heterogeneity, factor analysis and Cronbach's alpha analysis was performed. Reliability testing (n=274) was performed using test- retest methodology and calculation of intraclass correlation coefficients (CC). Validity testing (n=274) consisted of discriminant and various construct validity tests (1. calculation of Pearson CC between the PCRT and different HRQoL instruments, and 2. comparison of mean brachytherapy versus external-beam radiation therapy domain scores by Student's t-test). Results: Construction of an initial 29 item (5 point Likert scale) questionnaire with genitourinary, gastrointestinal, and sexual symptom and bother items was performed. The pilot study demonstrated that the PCRT was comprehensive (94%) and easy to administer (1.3% missing data). Item reduction resulted in three HRQoL subscales: (4 item GU alpha = 0.639, 12 item GI = 0.859, 5 item sexual = 0.700). Test-retest reliability demonstrated intraclass correlation coefficients of 0.811 (GU), 0.842 (GI), and 0.740 (sexual). Discriminate validity analysis demonstrated Pearson CC of 0.449 (GU-GI), 0.200 (sexual-GU), and 0.09 (sexual-GI). Content validity analysis demonstrated significant correlations between analogous subscales between PCRT and the PCQoL (range 0.35–0.78). Smaller correlations exist between the PCRT and FACT-G (0.19–0.39) and SF-36 (0.03–0.34). Difference scores between brachytherapy and external-beam favoured brachytherapy [4.13 (GI, p=0.02), 3.50 (sexual, p=0.36), and 3.63 (GU, p=0.14)]. Conclusion: The HRQoL subscales generated from the PCRT have been shown to have good internal consistency with documented reliability and validity. No significant financial relationships to disclose.
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Affiliation(s)
- G. Rodrigues
- London Regional Cancer Program, London, ON, Canada; Department of Medicine, London, ON, Canada
| | - G. Bauman
- London Regional Cancer Program, London, ON, Canada; Department of Medicine, London, ON, Canada
| | - M. Lock
- London Regional Cancer Program, London, ON, Canada; Department of Medicine, London, ON, Canada
| | - D. D'Souza
- London Regional Cancer Program, London, ON, Canada; Department of Medicine, London, ON, Canada
| | - J. Mahon
- London Regional Cancer Program, London, ON, Canada; Department of Medicine, London, ON, Canada
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Bifulco A, Mahon J, Kwon JH, Moran PM, Jacobs C. The Vulnerable Attachment Style Questionnaire (VASQ): an interview-based measure of attachment styles that predict depressive disorder. Psychol Med 2003; 33:1099-1110. [PMID: 12946094 DOI: 10.1017/s0033291703008237] [Citation(s) in RCA: 65] [Impact Index Per Article: 3.1] [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: 11/06/2022]
Abstract
BACKGROUND The Vulnerable Attachment Style Questionnaire (VASQ) was developed to provide a brief self-report tool to assess adult attachment style in relation to depression and validated against an existing investigator-based interview (Attachment Style Interview--ASI). This paper describes the development and scoring of the VASQ and its relationship to poor support and major depression. METHOD Items for the VASQ reflected behaviours, emotions and attitudes relating to attachment relationship style, drawn directly from the ASI. The VASQ was validated against the ASI for 262 community-based subjects. Test-retest was determined on 38 subjects. RESULTS Factor analysis derived two factors, labelled 'insecurity' and 'proximity-seeking'. The VASQ insecurity dimension had highest mean scores for those with interview-based Angry-dismissive and Fearful styles and was significantly correlated with degree of interview-based insecurity. The proximity-seeking VASQ scores had highest mean for those with Enmeshed interview attachment style and was uncorrelated with ASI insecurity. VASQ scores were highly correlated with a well-known self-report measure of insecure attachment (Relationship Questionnaire) and text-retest reliability of the VASQ was satisfactory. The total VASQ score and the insecurity subscale proved highly related to poor support and to depressive disorder. This was not the case for the proximity-seeking subscale. CONCLUSION The VASQ is a brief self-report measure that distinguishes individuals with attachment styles vulnerable for depressive disorder. The use of the measure for screening in research and clinical contexts is discussed.
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Affiliation(s)
- A Bifulco
- Lifespan Research Group, Royal Holloway, University of London
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Adcox K, Adler SS, Ajitanand NN, Akiba Y, Alexander J, Aphecetche L, Arai Y, Aronson SH, Averbeck R, Awes TC, Barish KN, Barnes PD, Barrette J, Bassalleck B, Bathe S, Baublis V, Bazilevsky A, Belikov S, Bellaiche FG, Belyaev ST, Bennett MJ, Berdnikov Y, Botelho S, Brooks ML, Brown DS, Bruner N, Bucher D, Buesching H, Bumazhnov V, Bunce G, Burward-Hoy J, Butsyk S, Carey TA, Chand P, Chang J, Chang WC, Chavez LL, Chernichenko S, Chi CY, Chiba J, Chiu M, Choudhury RK, Christ T, Chujo T, Chung MS, Chung P, Cianciolo V, Cole BA, D'Enterria DG, David G, Delagrange H, Denisov A, Deshpande A, Desmond EJ, Dietzsch O, Dinesh BV, Drees A, Durum A, Dutta D, Ebisu K, Efremenko YV, El Chenawi K, En'yo H, Esumi S, Ewell L, Ferdousi T, Fields DE, Fokin SL, Fraenkel Z, Franz A, Frawley AD, Fung SY, Garpman S, Ghosh TK, Glenn A, Godoi AL, Goto Y, Greene SV, Perdekamp MG, Gupta SK, Guryn W, Gustafsson HA, Haggerty JS, Hamagaki H, Hansen AG, Hara H, Hartouni EP, Hayano R, Hayashi N, He X, Hemmick TK, Heuser JM, Hibino M, Hill JC, Ho DS, Homma K, Hong B, Hoover A, Ichihara T, Imai K, Ippolitov MS, Ishihara M, Jacak BV, Jang WY, Jia J, Johnson BM, Johnson SC, Joo KS, Kametani S, Kang JH, Kann M, Kapoor SS, Kelly S, Khachaturov B, Khanzadeev A, Kikuchi J, Kim DJ, Kim HJ, Kim SY, Kim YG, Kinnison WW, Kistenev E, Kiyomichi A, Klein-Boesing C, Klinksiek S, Kochenda L, Kochetkov V, Koehler D, Kohama T, Kotchetkov D, Kozlov A, Kroon PJ, Kurita K, Kweon MJ, Kwon Y, Kyle GS, Lacey R, Lajoie JG, Lauret J, Lebedev A, Lee DM, Leitch MJ, Li XH, Li Z, Lim DJ, Liu MX, Liu X, Liu Z, Maguire CF, Mahon J, Makdisi YI, Manko VI, Mao Y, Mark SK, Markacs S, Martinez G, Marx MD, Masaike A, Matathias F, Matsumoto T, McGaughey PL, Melnikov E, Merschmeyer M, Messer F, Messer M, Miake Y, Miller TE, Milov A, Mioduszewski S, Mischke RE, Mishra GC, Mitchell JT, Mohanty AK, Morrison DP, Moss JM, Mühlbacher F, Muniruzzaman M, Murata J, Nagamiya S, Nagasaka Y, Nagle JL, Nakada Y, Nandi BK, Newby J, Nikkinen L, Nilsson P, Nishimura S, Nyanin AS, Nystrand J, O'Brien E, Ogilvie CA, Ohnishi H, Ojha ID, Ono M, Onuchin V, Oskarsson A, Osterman L, Otterlund I, Oyama K, Paffrath L, Palounek APT, Pantuev VS, Papavassiliou V, Pate SF, Peitzmann T, Petridis AN, Pinkenburg C, Pisani RP, Pitukhin P, Plasil F, Pollack M, Pope K, Purschke ML, Ravinovich I, Read KF, Reygers K, Riabov V, Riabov Y, Rosati M, Rose AA, Ryu SS, Saito N, Sakaguchi A, Sakaguchi T, Sako H, Sakuma T, Samsonov V, Sangster TC, Santo R, Sato HD, Sato S, Sawada S, Schlei BR, Schutz Y, Semenov V, Seto R, Shea TK, Shein I, Shibata TA, Shigaki K, Shiina T, Shin YH, Sibiriak IG, Silvermyr D, Sim KS, Simon-Gillo J, Singh CP, Singh V, Sivertz M, Soldatov A, Soltz RA, Sorensen S, Stankus PW, Starinsky N, Steinberg P, Stenlund E, Ster A, Stoll SP, Sugioka M, Sugitate T, Sullivan JP, Sumi Y, Sun Z, Suzuki M, Takagui EM, Taketani A, Tamai M, Tanaka KH, Tanaka Y, Taniguchi E, Tannenbaum MJ, Thomas J, Thomas JH, Thomas TL, Tian W, Tojo J, Torii H, Towell RS, Tserruya I, Tsuruoka H, Tsvetkov AA, Tuli SK, Tydesjö H, Tyurin N, Ushiroda T, Van Hecke HW, Velissaris C, Velkovska J, Velkovsky M, Vinogradov AA, Volkov MA, Vorobyov A, Vznuzdaev E, Wang H, Watanabe Y, White SN, Witzig C, Wohn FK, Woody CL, Xie W, Yagi K, Yokkaichi S, Young GR, Yushmanov IE, Zajc WA, Zhang Z, Zhou S. Flow measurements via two-particle azimuthal correlations in Au + Au collisions at sqrt [s(NN)]=130 GeV. Phys Rev Lett 2002; 89:212301. [PMID: 12443403 DOI: 10.1103/physrevlett.89.212301] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/11/2002] [Indexed: 05/24/2023]
Abstract
Two-particle azimuthal correlation functions are presented for charged hadrons produced in Au+Au collisions at the Relativistic Heavy Ion Collider (sqrt [s(NN)]=130 GeV). The measurements permit determination of elliptic flow without event-by-event estimation of the reaction plane. The extracted elliptic flow values (v2) show significant sensitivity to both the collision centrality and the transverse momenta of emitted hadrons, suggesting rapid thermalization and relatively strong velocity fields. When scaled by the eccentricity of the collision zone epsilon, the scaled elliptic flow shows little or no dependence on centrality for charged hadrons with relatively low p(T). A breakdown of this epsilon scaling is observed for charged hadrons with pT >1.0 GeV/c.
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Affiliation(s)
- K Adcox
- Vanderbilt University, Nashville, Tennessee 37235, USA
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Adcox K, Adler SS, Ajitanand NN, Akiba Y, Alexander J, Aphecetche L, Arai Y, Aronson SH, Averbeck R, Awes TC, Barish KN, Barnes PD, Barrette J, Bassalleck B, Bathe S, Baublis V, Bazilevsky A, Belikov S, Bellaiche FG, Belyaev ST, Bennett MJ, Berdnikov Y, Botelho S, Brooks ML, Brown DS, Bruner N, Bucher D, Buesching H, Bumazhnov V, Bunce G, Burward-Hoy J, Butsyk S, Carey TA, Chand P, Chang J, Chang WC, Chavez LL, Chernichenko S, Chi CY, Chiba J, Chiu M, Choudhury RK, Christ T, Chujo T, Chung MS, Chung P, Cianciolo V, Cole BA, D'Enterria DG, David G, Delagrange H, Denisov A, Deshpande A, Desmond EJ, Dietzsch O, Dinesh BV, Drees A, Durum A, Dutta D, Ebisu K, Efremenko YV, el-Chenawi K, En'yo H, Esumi S, Ewell L, Ferdousi T, Fields DE, Fokin SL, Fraenkel Z, Franz A, Frawley AD, Fung SY, Garpman S, Ghosh TK, Glenn A, Godoi AL, Goto Y, Greene SV, Grosse Perdekamp M, Gupta SK, Guryn W, Gustafsson HA, Haggerty JS, Hamagaki H, Hansen AG, Hara H, Hartouni EP, Hayano R, Hayashi N, He X, Hemmick TK, Heuser JM, Hibino M, Hill JC, Ho DS, Homma K, Hong B, Hoover A, Ichihara T, Imai K, Ippolitov MS, Ishihara M, Jacak BV, Jang WY, Jia J, Johnson BM, Johnson SC, Joo KS, Kametani S, Kang JH, Kann M, Kapoor SS, Kelly S, Khachaturov B, Khanzadeev A, Kikuchi J, Kim DJ, Kim HJ, Kim SY, Kim YG, Kinnison WW, Kistenev E, Kiyomichi A, Klein-Boesing C, Klinksiek S, Kochenda L, Kochetkov V, Koehler D, Kohama T, Kotchetkov D, Kozlov A, Kroon PJ, Kurita K, Kweon MJ, Kwon Y, Kyle GS, Lacey R, Lajoie JG, Lauret J, Lebedev A, Lee DM, Leitch MJ, Li XH, Li Z, Lim DJ, Liu MX, Liu X, Liu Z, Maguire CF, Mahon J, Makdisi YI, Manko VI, Mao Y, Mark SK, Markacs S, Martinez G, Marx MD, Masaike A, Matathias F, Matsumoto T, McGaughey PL, Melnikov E, Merschmeyer M, Messer F, Messer M, Miake Y, Miller TE, Milov A, Mioduszewski S, Mischke RE, Mishra GC, Mitchell JT, Mohanty AK, Morrison DP, Moss JM, Mühlbacher F, Mukhopadhyay D, Muniruzzaman M, Murata J, Nagamiya S, Nagasaka Y, Nagle JL, Nakada Y, Nandi BK, Newby J, Nikkinen L, Nilsson P, Nishimura S, Nyanin AS, Nystrand J, O'Brien E, Ogilvie CA, Ohnishi H, Ojha ID, Ono M, Onuchin V, Oskarsson A, Osterman L, Otterlund I, Oyama K, Paffrath L, Pal D, Palounek APT, Pantuev VS, Papavassiliou V, Pate SF, Peitzmann T, Petridis AN, Pinkenburg C, Pisani RP, Pitukhin P, Plasil F, Pollack M, Pope K, Purschke ML, Ravinovich I, Read KF, Reygers K, Riabov V, Riabov Y, Rosati M, Rose AA, Ryu SS, Saito N, Sakaguchi A, Sakaguchi T, Sako H, Sakuma T, Samsonov V, Sangster TC, Santo R, Sato HD, Sato S, Sawada S, Schlei BR, Schutz Y, Semenov V, Seto R, Shea TK, Shein I, Shibata TA, Shigaki K, Shiina T, Shin YH, Sibiriak IG, Silvermyr D, Sim KS, Simon-Gillo J, Singh CP, Singh V, Sivertz M, Soldatov A, Soltz RA, Sorensen S, Stankus PW, Starinsky N, Steinberg P, Stenlund E, Ster A, Stoll SP, Sugioka M, Sugitate T, Sullivan JP, Sumi Y, Sun Z, Suzuki M, Takagui EM, Taketani A, Tamai M, Tanaka KH, Tanaka Y, Taniguchi E, Tannenbaum MJ, Thomas J, Thomas JH, Thomas TL, Tian W, Tojo J, Torii H, Towell RS, Tserruya I, Tsuruoka H, Tsvetkov AA, Tuli SK, Tydesjö H, Tyurin N, Ushiroda T, Van Hecke HW, Velissaris C, Velkovska J, Velkovsky M, Vinogradov AA, Volkov MA, Vorobyov A, Vznuzdaev E, Wang H, Watanabe Y, White SN, Witzig C, Wohn FK, Woody CL, Xie W, Yagi K, Yokkaichi S, Young GR, Yushmanov IE, Zajc WA, Zhang Z, Zhou S, Zhou S. Measurement of Lambda and Lambda(macro) particles in Au+Au collisions at the square root of S(NN) = 130 GeV. Phys Rev Lett 2002; 89:092302. [PMID: 12190391 DOI: 10.1103/physrevlett.89.092302] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/17/2002] [Indexed: 05/23/2023]
Abstract
We present results on the measurement of Lambda and Lambda(macro) production in Au+Au collisions at square root of (S (NN) = 130 GeV with the PHENIX detector at the Relativistic Heavy Ion Collider. The transverse momentum spectra were measured for minimum bias and for the 5% most central events. The Lambda;/Lambda ratios are constant as a function of p(T) and the number of participants. The measured net Lambda density is significantly larger than predicted by models based on hadronic strings (e.g., HIJING) but in approximate agreement with models which include the gluon-junction mechanism.
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Affiliation(s)
- K Adcox
- Vanderbilt University, Nashville, Tennessee 37235
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Adcox K, Adler SS, Ajitanand NN, Akiba Y, Alexander J, Aphecetche L, Arai Y, Aronson SH, Averbeck R, Awes TC, Barish KN, Barnes PD, Barrette J, Bassalleck B, Bathe S, Baublis V, Bazilevsky A, Belikov S, Bellaiche FG, Belyaev ST, Bennett MJ, Berdnikov Y, Botelho S, Brooks ML, Brown DS, Bruner N, Bucher D, Buesching H, Bumazhnov V, Bunce G, Burward-Hoy J, Butsyk S, Carey TA, Chand P, Chang J, Chang WC, Chavez LL, Chernichenko S, Chi CY, Chiba J, Chiu M, Choudhury RK, Christ T, Chujo T, Chung MS, Chung P, Cianciolo V, Cole BA, D'Enterria DG, David G, Delagrange H, Denisov A, Deshpande A, Desmond EJ, Dietzsch O, Dinesh BV, Drees A, Durum A, Dutta D, Ebisu K, Efremenko YV, El Chenawi K, En'yo H, Esumi S, Ewell L, Ferdousi T, Fields DE, Fokin SL, Fraenkel Z, Franz A, Frawley AD, Fung SY, Garpman S, Ghosh TK, Glenn A, Godoi AL, Goto Y, Greene SV, Grosse Perdekamp M, Gupta SK, Guryn W, Gustafsson HA, Haggerty JS, Hamagaki H, Hansen AG, Hara H, Hartouni EP, Hayano R, Hayashi N, He X, Hemmick TK, Heuser JM, Hibino M, Hill JC, Ho DS, Homma K, Hong B, Hoover A, Ichihara T, Imai K, Ippolitov MS, Ishihara M, Jacak BV, Jang WY, Jia J, Johnson BM, Johnson SC, Joo KS, Kametani S, Kang JH, Kann M, Kapoor SS, Kelly S, Khachaturov B, Khanzadeev A, Kikuchi J, Kim DJ, Kim HJ, Kim SY, Kim YG, Kinnison WW, Kistenev E, Kiyomichi A, Klein-Boesing C, Klinksiek S, Kochenda L, Kochetkov V, Koehler D, Kohama T, Kotchetkov D, Kozlov A, Kroon PJ, Kurita K, Kweon MJ, Kwon Y, Kyle GS, Lacey R, Lajoie JG, Lauret J, Lebedev A, Lee DM, Leitch MJ, Li XH, Li Z, Lim DJ, Liu MX, Liu X, Liu Z, Maguire CF, Mahon J, Makdisi YI, Manko VI, Mao Y, Mark SK, Markacs S, Martinez G, Marx MD, Masaike A, Matathias F, Matsumoto T, McGaughey PL, Melnikov E, Merschmeyer M, Messer F, Messer M, Miake Y, Miller TE, Milov A, Mioduszewski S, Mischke RE, Mishra GC, Mitchell JT, Mohanty AK, Morrison DP, Moss JM, Mühlbacher F, Muniruzzaman M, Murata J, Nagamiya S, Nagasaka Y, Nagle JL, Nakada Y, Nandi BK, Newby J, Nikkinen L, Nilsson P, Nishimura S, Nyanin AS, Nystrand J, O'Brien E, Ogilvie CA, Ohnishi H, Ojha ID, Ono M, Onuchin V, Oskarsson A, Osterman L, Otterlund I, Oyama K, Paffrath L, Palounek APT, Pantuev VS, Papavassiliou V, Pate SF, Peitzmann T, Petridis AN, Pinkenburg C, Pisani RP, Pitukhin P, Plasil F, Pollack M, Pope K, Purschke ML, Ravinovich I, Read KF, Reygers K, Riabov V, Riabov Y, Rosati M, Rose AA, Ryu SS, Saito N, Sakaguchi A, Sakaguchi T, Sako H, Sakuma T, Samsonov V, Sangster TC, Santo R, Sato HD, Sato S, Sawada S, Schlei BR, Schutz Y, Semenov V, Seto R, Shea TK, Shein I, Shibata TA, Shigaki K, Shiina T, Shin YH, Sibiriak IG, Silvermyr D, Sim KS, Simon-Gillo J, Singh CP, Singh V, Sivertz M, Soldatov A, Soltz RA, Sorensen S, Stankus PW, Starinsky N, Steinberg P, Stenlund E, Ster A, Stoll SP, Sugioka M, Sugitate T, Sullivan JP, Sumi Y, Sun Z, Suzuki M, Takagui EM, Taketani A, Tamai M, Tanaka KH, Tanaka Y, Taniguchi E, Tannenbaum MJ, Thomas J, Thomas JH, Thomas TL, Tian W, Tojo J, Torii H, Towell RS, Tserruya I, Tsuruoka H, Tsvetkov AA, Tuli SK, Tydesjö H, Tyurin N, Ushiroda T, van Hecke HW, Velissaris C, Velkovska J, Velkovsky M, Vinogradov AA, Volkov MA, Vorobyov A, Vznuzdaev E, Wang H, Watanabe Y, White SN, Witzig C, Wohn FK, Woody CL, Xie W, Yagi K, Yokkaichi S, Young GR, Yushmanov IE, Zajc WA, Zhang Z, Zhou S. Net charge fluctuations in Au + Au interactions at sqrt[s(NN)]=130 GeV. Phys Rev Lett 2002; 89:082301. [PMID: 12190459 DOI: 10.1103/physrevlett.89.082301] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/21/2002] [Indexed: 05/23/2023]
Abstract
Data from Au + Au interactions at sqrt[s(NN)]=130 GeV, obtained with the PHENIX detector at the Relativistic Heavy-Ion Collider, are used to investigate local net charge fluctuations among particles produced near midrapidity. According to recent suggestions, such fluctuations may carry information from the quark-gluon plasma. This analysis shows that the fluctuations are dominated by a stochastic distribution of particles, but are also sensitive to other effects, like global charge conservation and resonance decays.
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Affiliation(s)
- K Adcox
- Vanderbilt University, Nashville, Tennessee 37235, USA
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Adcox K, Adler SS, Ajitanand NN, Akiba Y, Alexander J, Aphecetche L, Arai Y, Aronson SH, Averbeck R, Awes TC, Barish KN, Barnes PD, Barrette J, Bassalleck B, Bathe S, Baublis V, Bazilevsky A, Belikov S, Bellaiche FG, Belyaev ST, Bennett MJ, Berdnikov Y, Botelho S, Brooks ML, Brown DS, Bruner N, Bucher D, Buesching H, Bumazhnov V, Bunce G, Burward-Hoy J, Butsyk S, Carey TA, Chand P, Chang J, Chang WC, Chavez LL, Chernichenko S, Chi CY, Chiba J, Chiu M, Choudhury RK, Christ T, Chujo T, Chung MS, Chung P, Cianciolo V, Cole BA, D'Enterria DG, David G, Delagrange H, Denisov A, Deshpande A, Desmond EJ, Dietzsch O, Dinesh BV, Drees A, Durum A, Dutta D, Ebisu K, Efremenko YV, El Chenawi K, En'yo H, Esumi S, Ewell L, Ferdousi T, Fields DE, Fokin SL, Fraenkel Z, Franz A, Frawley AD, Fung SY, Garpman S, Ghosh TK, Glenn A, Godoi AL, Goto Y, Greene SV, Grosse Perdekamp M, Gupta SK, Guryn W, Gustafsson HA, Haggerty JS, Hamagaki H, Hansen AG, Hara H, Hartouni EP, Hayano R, Hayashi N, He X, Hemmick TK, Heuser JM, Hibino M, Hill JC, Ho DS, Homma K, Hong B, Hoover A, Ichihara T, Imai K, Ippolitov MS, Ishihara M, Jacak BV, Jang WY, Jia J, Johnson BM, Johnson SC, Joo KS, Kametani S, Kang JH, Kann M, Kapoor SS, Kelly S, Khachaturov B, Khanzadeev A, Kikuchi J, Kim DJ, Kim HJ, Kim SY, Kim YG, Kinnison WW, Kistenev E, Kiyomichi A, Klein-Boesing C, Klinksiek S, Kochenda L, Kochetkov V, Koehler D, Kohama T, Kotchetkov D, Kozlov A, Kroon PJ, Kurita K, Kweon MJ, Kwon Y, Kyle GS, Lacey R, Lajoie JG, Lauret J, Lebedev A, Lee DM, Leitch MJ, Li XH, Li Z, Lim DJ, Liu MX, Liu X, Liu Z, Maguire CF, Mahon J, Makdisi YI, Manko VI, Mao Y, Mark SK, Markacs S, Martinez G, Marx MD, Masaike A, Matathias F, Matsumoto T, McGaughey PL, Melnikov E, Merschmeyer M, Messer F, Messer M, Miake Y, Miller TE, Milov A, Mioduszewski S, Mischke RE, Mishra GC, Mitchell JT, Mohanty AK, Morrison DP, Moss JM, Mühlbacher F, Muniruzzaman M, Murata J, Nagamiya S, Nagasaka Y, Nagle JL, Nakada Y, Nandi BK, Newby J, Nikkinen L, Nilsson P, Nishimura S, Nyanin AS, Nystrand J, O'Brien E, Ogilvie CA, Ohnishi H, Ojha ID, Ono M, Onuchin V, Oskarsson A, Osterman L, Otterlund I, Oyama K, Paffrath L, Palounek APT, Pantuev VS, Papavassiliou V, Pate SF, Peitzmann T, Petridis AN, Pinkenburg C, Pisani RP, Pitukhin P, Plasil F, Pollack M, Pope K, Purschke ML, Ravinovich I, Read KF, Reygers K, Riabov V, Riabov Y, Rosati M, Rose AA, Ryu SS, Saito N, Sakaguchi A, Sakaguchi T, Sako H, Sakuma T, Samsonov V, Sangster TC, Santo R, Sato HD, Sato S, Sawada S, Schlei BR, Schutz Y, Semenov V, Seto R, Shea TK, Shein I, Shibata TA, Shigaki K, Shiina T, Shin YH, Sibiriak IG, Silvermyr D, Sim KS, Simon-Gillo J, Singh CP, Singh V, Sivertz M, Soldatov A, Soltz RA, Sorensen S, Stankus PW, Starinsky N, Steinberg P, Stenlund E, Ster A, Stoll SP, Sugioka M, Sugitate T, Sullivan JP, Sumi Y, Sun Z, Suzuki M, Takagui EM, Taketani A, Tamai M, Tanaka KH, Tanaka Y, Taniguchi E, Tannenbaum MJ, Thomas J, Thomas JH, Thomas TL, Tian W, Tojo J, Torii H, Towell RS, Tserruya I, Tsuruoka H, Tsvetkov AA, Tuli SK, Tydesjö H, Tyurin N, Ushiroda T, van Hecke HW, Velissaris C, Velkovska J, Velkovsky M, Vinogradov AA, Volkov MA, Vorobyov A, Vznuzdaev E, Wang H, Watanabe Y, White SN, Witzig C, Wohn FK, Woody CL, Xie W, Yagi K, Yokkaichi S, Young GR, Yushmanov IE, Zajc WA, Zhang Z, Zhou S. Centrality dependence of pi(+/-), K(+/-), p, and (-)p production from sqrt[s(NN)] = 130 GeV Au + Au collisions at RHIC. Phys Rev Lett 2002; 88:242301. [PMID: 12059292 DOI: 10.1103/physrevlett.88.242301] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/17/2001] [Indexed: 05/23/2023]
Abstract
Identified pi(+/-), K(+/-), p, and (-)p transverse momentum spectra at midrapidity in sqrt[s(NN)] = 130 GeV Au+Au collisions were measured by the PHENIX experiment at RHIC as a function of collision centrality. Average transverse momenta increase with the number of participating nucleons in a similar way for all particle species. Within errors, all midrapidity particle yields per participant are found to be increasing with the number of participating nucleons. There is an indication that K(+/-), p, and (-)p yields per participant increase faster than the pi(+/-) yields. In central collisions at high transverse momenta (p(T) > or =2 GeV/c), (-)p and p yields are comparable to the pi(+/-) yields.
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Affiliation(s)
- K Adcox
- Institute of Physics, Academia Sinica, Taipei 11529, Taiwan
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Adcox K, Adler SS, Ajitanand NN, Akiba Y, Alexander J, Aphecetche L, Arai Y, Aronson SH, Averbeck R, Awes TC, Barish KN, Barnes PD, Barrette J, Bassalleck B, Bathe S, Baublis V, Bazilevsky A, Belikov S, Bellaiche FG, Belyaev ST, Bennett MJ, Berdnikov Y, Botelho S, Brooks ML, Brown DS, Bruner N, Bucher D, Buesching H, Bumazhnov V, Bunce G, Burward-Hoy J, Butsyk S, Carey TA, Chand P, Chang J, Chang WC, Chavez LL, Chernichenko S, Chi CY, Chiba J, Chiu M, Choudhury RK, Christ T, Chujo T, Chung MS, Chung P, Cianciolo V, Cole BA, D'Enterria DG, David G, Delagrange H, Denisov A, Deshpande A, Desmond EJ, Dietzsch O, Dinesh BV, Drees A, Durum A, Dutta D, Ebisu K, Efremenko YV, El Chenawi K, Enokizono A, En'yo H, Esumi S, Ewell L, Ferdousi T, Fields DE, Fokin SL, Fraenkel Z, Franz A, Frawley AD, Fung SY, Garpman S, Ghosh TK, Glenn A, Godoi AL, Goto Y, Greene SV, Grosse Perdekamp M, Gupta SK, Guryn W, Gustafsson HA, Haggerty JS, Hamagaki H, Hansen AG, Hara H, Hartouni EP, Hayano R, Hayashi N, He X, Hemmick TK, Heuser JM, Hibino M, Hill JC, Ho DS, Homma K, Hong B, Hoover A, Ichihara T, Imai K, Ippolitov MS, Ishihara M, Jacak BV, Jang WY, Jia J, Johnson BM, Johnson SC, Joo KS, Kametani S, Kang JH, Kann M, Kapoor SS, Kelly S, Khachaturov B, Khanzadeev A, Kikuchi J, Kim DJ, Kim HJ, Kim SY, Kim YG, Kinnison WW, Kistenev E, Kiyomichi A, Klein-Boesing C, Klinksiek S, Kochenda L, Kochetkov V, Koehler D, Kohama T, Kotchetkov D, Kozlov A, Kroon PJ, Kurita K, Kweon MJ, Kwon Y, Kyle GS, Lacey R, Lajoie JG, Lauret J, Lebedev A, Lee DM, Leitch MJ, Li XH, Li Z, Lim DJ, Liu MX, Liu X, Liu Z, Maguire CF, Mahon J, Makdisi YI, Manko VI, Mao Y, Mark SK, Markacs S, Martinez G, Marx MD, Masaike A, Matathias F, Matsumoto T, McGaughey PL, Melnikov E, Merschmeyer M, Messer F, Messer M, Miake Y, Miller TE, Milov A, Mioduszewski S, Mischke RE, Mishra GC, Mitchell JT, Mohanty AK, Morrison DP, Moss JM, Mühlbacher F, Muniruzzaman M, Murata J, Nagamiya S, Nagasaka Y, Nagle JL, Nakada Y, Nandi BK, Newby J, Nikkinen L, Nilsson P, Nishimura S, Nyanin AS, Nystrand J, O'Brien E, Ogilvie CA, Ohnishi H, Ojha ID, Ono M, Onuchin V, Oskarsson A, Osterman L, Otterlund I, Oyama K, Paffrath L, Palounek APT, Pantuev VS, Papavassiliou V, Pate SF, Peitzmann T, Petridis AN, Pinkenburg C, Pisani RP, Pitukhin P, Plasil F, Pollack M, Pope K, Purschke ML, Ravinovich I, Read KF, Reygers K, Riabov V, Riabov Y, Rosati M, Rose AA, Ryu SS, Saito N, Sakaguchi A, Sakaguchi T, Sako H, Sakuma T, Samsonov V, Sangster TC, Santo R, Sato HD, Sato S, Sawada S, Schlei BR, Schutz Y, Semenov V, Seto R, Shea TK, Shein I, Shibata TA, Shigaki K, Shiina T, Shin YH, Sibiriak IG, Silvermyr D, Sim KS, Simon-Gillo J, Singh CP, Singh V, Sivertz M, Soldatov A, Soltz RA, Sorensen S, Stankus PW, Starinsky N, Steinberg P, Stenlund E, Ster A, Stoll SP, Sugioka M, Sugitate T, Sullivan JP, Sumi Y, Sun Z, Suzuki M, Takagui EM, Taketani A, Tamai M, Tanaka KH, Tanaka Y, Taniguchi E, Tannenbaum MJ, Thomas J, Thomas JH, Thomas TL, Tian W, Tojo J, Torii H, Towell RS, Tserruya I, Tsuruoka H, Tsvetkov AA, Tuli SK, Tydesjö H, Tyurin N, Ushiroda T, Van Hecke HW, Velissaris C, Velkovska J, Velkovsky M, Vinogradov AA, Volkov MA, Vorobyov A, Vznuzdaev E, Wang H, Watanabe Y, White SN, Witzig C, Wohn FK, Woody CL, Xie W, Yagi K, Yokkaichi S, Young GR, Yushmanov IE, Zajc WA, Zhang Z, Zhou S. Transverse-mass dependence of two-pion correlations in Au+Au collisions at square root[s(NN)] = 130 GeV. Phys Rev Lett 2002; 88:192302. [PMID: 12005626 DOI: 10.1103/physrevlett.88.192302] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/16/2002] [Indexed: 05/23/2023]
Abstract
Two-pion correlations in square root[s(NN)] = 130 GeV Au+Au collisions at RHIC have been measured over a broad range of pair transverse momentum k(T) by the PHENIX experiment at RHIC. The k(T) dependent transverse radii are similar to results from heavy-ion collisions at square root[s(NN)] = 4.1, 4.9, and 17.3 GeV, whereas the longitudinal radius increases monotonically with beam energy. The ratio of the outwards to sidewards transverse radii (R(out)/R(side)) is consistent with unity and independent of k(T).
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Affiliation(s)
- K Adcox
- Vanderbilt University, Nashville, Tennessee 37235, USA
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Adcox K, Adler SS, Ajitanand NN, Akiba Y, Alexander J, Aphecetche L, Arai Y, Aronson SH, Averbeck R, Awes TC, Barish KN, Barnes PD, Barrette J, Bassalleck B, Bathe S, Baublis V, Bazilevsky A, Belikov S, Bellaiche FG, Belyaev ST, Bennett MJ, Berdnikov Y, Botelho S, Brooks ML, Brown DS, Bruner N, Bucher D, Buesching H, Bumazhnov V, Bunce G, Burward-Hoy J, Butsyk S, Carey TA, Chand P, Chang J, Chang WC, Chavez LL, Chernichenko S, Chi CY, Chiba J, Chiu M, Choudhury RK, Christ T, Chujo T, Chung MS, Chung P, Cianciolo V, Cole BA, D'Enterria DG, David G, Delagrange H, Denisov A, Deshpande A, Desmond EJ, Dietzsch O, Dinesh BV, Drees A, Durum A, Dutta D, Ebisu K, Efremenko YV, El Chenawi K, En'yo H, Esumi S, Ewell L, Ferdousi T, Fields DE, Fokin SL, Fraenkel Z, Franz A, Frawley AD, Fung SY, Garpman S, Ghosh TK, Glenn A, Godoi AL, Goto Y, Greene SV, Grosse Perdekamp M, Gupta SK, Guryn W, Gustafsson HA, Hachiya T, Haggerty JS, Hamagaki H, Hansen AG, Hara H, Hartouni EP, Hayano R, Hayashi N, He X, Hemmick TK, Heuser JM, Hibino M, Hill JC, Ho DS, Homma K, Hong B, Hoover A, Ichihara T, Imai K, Ippolitov MS, Ishihara M, Jacak BV, Jang WY, Jia J, Johnson BM, Johnson SC, Joo KS, Kametani S, Kang JH, Kann M, Kapoor SS, Kelly S, Khachaturov B, Khanzadeev A, Kikuchi J, Kim DJ, Kim HJ, Kim SY, Kim YG, Kinnison WW, Kistenev E, Kiyomichi A, Klein-Boesing C, Klinksiek S, Kochenda L, Kochetkov V, Koehler D, Kohama T, Kotchetkov D, Kozlov A, Kroon PJ, Kurita K, Kweon MJ, Kwon Y, Kyle GS, Lacey R, Lajoie JG, Lauret J, Lebedev A, Lee DM, Leitch MJ, Li XH, Li Z, Lim DJ, Liu MX, Liu X, Liu Z, Maguire CF, Mahon J, Makdisi YI, Manko VI, Mao Y, Mark SK, Markacs S, Martinez G, Marx MD, Masaike A, Matathias F, Matsumoto T, McGaughey PL, Melnikov E, Merschmeyer M, Messer F, Messer M, Miake Y, Miller TE, Milov A, Mioduszewski S, Mischke RE, Mishra GC, Mitchell JT, Mohanty AK, Morrison DP, Moss JM, Mühlbacher F, Muniruzzaman M, Murata J, Nagamiya S, Nagasaka Y, Nagle JL, Nakada Y, Nandi BK, Newby J, Nikkinen L, Nilsson P, Nishimura S, Nyanin AS, Nystrand J, O'Brien E, Ogilvie CA, Ohnishi H, Ojha ID, Ono M, Onuchin V, Oskarsson A, Osterman L, Otterlund I, Oyama K, Paffrath L, Palounek APT, Pantuev VS, Papavassiliou V, Pate SF, Peitzmann T, Petridis AN, Pinkenburg C, Pisani RP, Pitukhin P, Plasil F, Pollack M, Pope K, Purschke ML, Ravinovich I, Read KF, Reygers K, Riabov V, Riabov Y, Rosati M, Rose AA, Ryu SS, Saito N, Sakaguchi A, Sakaguchi T, Sako H, Sakuma T, Samsonov V, Sangster TC, Santo R, Sato HD, Sato S, Sawada S, Schlei BR, Schutz Y, Semenov V, Seto R, Shea TK, Shein I, Shibata TA, Shigaki K, Shiina T, Shin YH, Sibiriak IG, Silvermyr D, Sim KS, Simon-Gillo J, Singh CP, Singh V, Sivertz M, Soldatov A, Soltz RA, Sorensen S, Stankus PW, Starinsky N, Steinberg P, Stenlund E, Ster A, Stoll SP, Sugioka M, Sugitate T, Sullivan JP, Sumi Y, Sun Z, Suzuki M, Takagui EM, Taketani A, Tamai M, Tanaka KH, Tanaka Y, Taniguchi E, Tannenbaum MJ, Thomas J, Thomas JH, Thomas TL, Tian W, Tojo J, Torii H, Towell RS, Tserruya I, Tsuruoka H, Tsvetkov AA, Tuli SK, Tydesjö H, Tyurin N, Ushiroda T, Van Hecke HW, Velissaris C, Velkovska J, Velkovsky M, Vinogradov AA, Volkov MA, Vorobyov A, Vznuzdaev E, Wang H, Watanabe Y, White SN, Witzig C, Wohn FK, Woody CL, Xie W, Yagi K, Yokkaichi S, Young GR, Yushmanov IE, Zajc WA, Zhang Z, Zhou S. Measurement of single electrons and implications for charm production in Au+Au collisions at square root[s(NN)] = 130 GeV. Phys Rev Lett 2002; 88:192303. [PMID: 12005627 DOI: 10.1103/physrevlett.88.192303] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/05/2002] [Indexed: 05/23/2023]
Abstract
Transverse momentum spectra of electrons from Au+Au collisions at square root[s(NN)] = 130 GeV have been measured at midrapidity by the PHENIX experiment at the Relativistic Heavy Ion Collider. The spectra show an excess above the background from photon conversions and light hadron decays. The electron signal is consistent with that expected from semileptonic decays of charm. The yield of the electron signal dN(e)/dy for p(T) > 0.8 GeV/c is 0.025+/-0.004(stat)+/-0.010(syst) in central collisions, and the corresponding charm cross section is 380+/-60(stat)+/-200(syst) microb per binary nucleon-nucleon collision.
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Affiliation(s)
- K Adcox
- Vanderbilt University, Nashville, Tennessee 37235, USA
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Adcox K, Adler SS, Ajitanand NN, Akiba Y, Alexander J, Aphecetche L, Arai Y, Aronson SH, Averbeck R, Awes TC, Barish KN, Barnes PD, Barrette J, Bassalleck B, Bathe S, Baublis V, Bazilevsky A, Belikov S, Bellaiche FG, Belyaev ST, Bennett MJ, Berdnikov Y, Botelho S, Brooks ML, Brown DS, Bruner N, Bucher D, Buesching H, Bumazhnov V, Bunce G, Burward-Hoy J, Butsyk S, Carey TA, Chand P, Chang J, Chang WC, Chavez LL, Chernichenko S, Chi CY, Chiba J, Chiu M, Choudhury RK, Christ T, Chujo T, Chung MS, Chung P, Cianciolo V, Cole BA, D'Enterria DG, David G, Delagrange H, Denisov A, Deshpande A, Desmond EJ, Dietzsch O, Dinesh BV, Drees A, Durum A, Dutta D, Ebisu K, Efremenko YV, El Chenawi K, En'yo H, Esumi S, Ewell L, Ferdousi T, Fields DE, Fokin SL, Fraenkel Z, Franz A, Frawley AD, Fung SY, Garpman S, Ghosh TK, Glenn A, Godoi AL, Goto Y, Greene SV, Grosse Perdekamp M, Gupta SK, Guryn W, Gustafsson HA, Haggerty JS, Hamagaki H, Hansen AG, Hara H, Hartouni EP, Hayano R, Hayashi N, He X, Hemmick TK, Heuser JM, Hibino M, Hill JC, Ho DS, Homma K, Hong B, Hoover A, Ichihara T, Imai K, Ippolitov MS, Ishihara M, Jacak BV, Jang WY, Jia J, Johnson BM, Johnson SC, Joo KS, Kametani S, Kang JH, Kann M, Kapoor SS, Kelly S, Khachaturov B, Khanzadeev A, Kikuchi J, Kim DJ, Kim HJ, Kim SY, Kim YG, Kinnison WW, Kistenev E, Kiyomichi A, Klein-Boesing C, Klinksiek S, Kochenda L, Kochetkov V, Koehler D, Kohama T, Kotchetkov D, Kozlov A, Kroon PJ, Kurita K, Kweon MJ, Kwon Y, Kyle GS, Lacey R, Lajoie JG, Lauret J, Lebedev A, Lee DM, Leitch MJ, Li XH, Li Z, Lim DJ, Liu MX, Liu X, Liu Z, Maguire CF, Mahon J, Makdisi YI, Manko VI, Mao Y, Mark SK, Markacs S, Martinez G, Marx MD, Masaike A, Matathias F, Matsumoto T, McGaughey PL, Melnikov E, Merschmeyer M, Messer F, Messer M, Miake Y, Miller TE, Milov A, Mioduszewski S, Mischke RE, Mishra GC, Mitchell JT, Mohanty AK, Morrison DP, Moss JM, Mühlbacher F, Muniruzzaman M, Murata J, Nagamiya S, Nagasaka Y, Nagle JL, Nakada Y, Nandi BK, Newby J, Nikkinen L, Nilsson P, Nishimura S, Nyanin AS, Nystrand J, O'Brien E, Ogilvie CA, Ohnishi H, Ojha ID, Ono M, Onuchin V, Oskarsson A, Osterman L, Otterlund I, Oyama K, Paffrath L, Palounek APT, Pantuev VS, Papavassiliou V, Pate SF, Peitzmann T, Petridis AN, Pinkenburg C, Pisani RP, Pitukhin P, Plasil F, Pollack M, Pope K, Purschke ML, Ravinovich I, Read KF, Reygers K, Riabov V, Riabov Y, Rosati M, Rose AA, Ryu SS, Saito N, Sakaguchi A, Sakaguchi T, Sako H, Sakuma T, Samsonov V, Sangster TC, Santo R, Sato HD, Sato S, Sawada S, Schlei BR, Schutz Y, Semenov V, Seto R, Shea TK, Shein I, Shibata TA, Shigaki K, Shiina T, Shin YH, Sibiriak IG, Silvermyr D, Sim KS, Simon-Gillo J, Singh CP, Singh V, Sivertz M, Soldatov A, Soltz RA, Sorensen S, Stankus PW, Starinsky N, Steinberg P, Stenlund E, Ster A, Stoll SP, Sugioka M, Sugitate T, Sullivan JP, Sumi Y, Sun Z, Suzuki M, Takagui EM, Taketani A, Tamai M, Tanaka KH, Tanaka Y, Taniguchi E, Tannenbaum MJ, Thomas J, Thomas JH, Thomas TL, Tian W, Tojo J, Torii H, Towell RS, Tserruya I, Tsuruoka H, Tsvetkov AA, Tuli SK, Tydesjö H, Tyurin N, Ushiroda T, van Hecke HW, Velissaris C, Velkovska J, Velkovsky M, Vinogradov AA, Volkov MA, Vorobyov A, Vznuzdaev E, Wang H, Watanabe Y, White SN, Witzig C, Wohn FK, Woody CL, Xie W, Yagi K, Yokkaichi S, Young GR, Yushmanov IE, Zajc WA, Zhang Z, Zhou S. Suppression of hadrons with large transverse momentum in central Au+Au collisions at root square[s(NN)] = 130 GeV. Phys Rev Lett 2002; 88:022301. [PMID: 11801005 DOI: 10.1103/physrevlett.88.022301] [Citation(s) in RCA: 100] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/05/2001] [Indexed: 05/23/2023]
Abstract
Transverse momentum spectra for charged hadrons and for neutral pions in the range 1 GeV/c<p(T)<5 GeV/c have been measured by the PHENIX experiment at RHIC in Au+Au collisions at root square[s(NN)] = 130 GeV. At high p(T) the spectra from peripheral nuclear collisions are consistent with scaling the spectra from p+p collisions by the average number of binary nucleon-nucleon collisions. The spectra from central collisions are significantly suppressed when compared to the binary-scaled p+p expectation, and also when compared to similarly binary-scaled peripheral collisions, indicating a novel nuclear-medium effect in central nuclear collisions at RHIC energies.
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Affiliation(s)
- K Adcox
- Vanderbilt University, Nashville, Tennessee 37235, USA
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Mahon J, Bradley SN, Harvey PK, Winston AP, Palmer RL. Childhood trauma has dose-effect relationship with dropping out from psychotherapeutic treatment for bulimia nervosa: a replication. Int J Eat Disord 2001; 30:138-48. [PMID: 11449447 DOI: 10.1002/eat.1066] [Citation(s) in RCA: 45] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
OBJECTIVE The primary goal of this study was to replicate the finding that experiences of childhood trauma have a dose-effect relationship with dropping out from psychotherapeutic treatment for bulimia nervosa. It also aimed to replicate logistic regression findings that parental break-up predicts dropping out. METHOD The cohort consisted of 114 women consecutively presenting to an outpatient eating disorders clinic with bulimia nervosa or atypical bulimia nervosa. Data were gathered using a retrospective, case-note approach and were analysed using logistic regression (LR). A correlation technique was employed to assess the presence of a dose-effect relationship between experiences of trauma in childhood and dropping out. LR models were double cross-validated between this and an earlier cohort. RESULTS The dose-effect relationship between experiences of childhood trauma and dropping out was confirmed. Witnessing parental break-up in childhood again predicted dropping out of treatment in adulthood. Cross-validation of LR equations was unsuccessful. DISCUSSION These results strongly suggest that experiences of childhood trauma have a dose-effect relationship with dropping out. Parental break-up is a stable predictor of dropping out. It is possible that these experiences influence attachment style, particularly the ability to make and maintain a trusting relationship with a psychotherapist. Clinical implications are discussed.
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Affiliation(s)
- J Mahon
- Department of Psychiatry, University of Leicester, Leicester, United Kingdom
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Adcox K, Adler SS, Ajitanand NN, Akiba Y, Alexander J, Aphecetche L, Arai Y, Aronson SH, Averbeck R, Awes TC, Barish KN, Barnes PD, Barrette J, Bassalleck B, Bathe S, Baublis V, Bazilevsky A, Belikov S, Bellaiche FG, Belyaev ST, Bennett MJ, Berdnikov Y, Botelho S, Brooks ML, Brown DS, Bruner N, Bucher D, Buesching H, Bumazhnov V, Bunce G, Burward-Hoy J, Butsyk S, Carey TA, Chand P, Chang J, Chang WC, Chavez LL, Chernichenko S, Chi CY, Chiba J, Chiu M, Choudhury RK, Christ T, Chujo T, Chung MS, Chung P, Cianciolo V, Cole BA, D'Enterria DG, David G, Delagrange H, Denisov A, Deshpande A, Desmond EJ, Dietzsch O, Dinesh BV, Drees A, Durum A, Dutta D, Ebisu K, Efremenko YV, El Chenawi K, En'yo H, Esumi S, Ewell L, Ferdousi T, Fields DE, Fokin SL, Fraenkel Z, Franz A, Frawley AD, Fung SY, Garpman S, Ghosh TK, Glenn A, Godoi AL, Goto Y, Greene SV, Grosse Perdekamp M, Gupta SK, Guryn W, Gustafsson HA, Haggerty JS, Hamagaki H, Hansen AG, Hara H, Hartouni EP, Hayano R, Hayashi N, He X, Hemmick TK, Heuser JM, Hibino M, Hill JC, Ho DS, Homma K, Hong B, Hoover A, Ichihara T, Imai K, Ippolitov MS, Ishihara M, Jacak BV, Jang WY, Jia J, Johnson BM, Johnson SC, Joo KS, Kametani S, Kang JH, Kann M, Kapoor SS, Kelly S, Khachaturov B, Khanzadeev A, Kikuchi J, Kim DJ, Kim HJ, Kim SY, Kim YG, Kinnison WW, Kistenev E, Kiyomichi A, Klein-Boesing C, Klinksiek S, Kochenda L, Kochetkov D, Kochetkov V, Koehler D, Kohama T, Kozlov A, Kroon PJ, Kurita K, Kweon MJ, Kwon Y, Kyle GS, Lacey R, Lajoie JG, Lauret J, Lebedev A, Lee DM, Leitch MJ, Li XH, Li Z, Lim DJ, Liu MX, Liu X, Liu Z, Maguire CF, Mahon J, Makdisi YI, Manko VI, Mao Y, Mark SK, Markacs S, Martinez G, Marx MD, Masaike A, Matathias F, Matsumoto T, McGaughey PL, Melnikov E, Merschmeyer M, Messer F, Messer M, Miake Y, Miller TE, Milov A, Mioduszewski S, Mischke RE, Mishra GC, Mitchell JT, Mohanty AK, Morrison DP, Moss JM, Mühlbacher F, Muniruzzaman M, Murata J, Nagamiya S, Nagasaka Y, Nagle JL, Nakada Y, Nandi BK, Newby J, Nikkinen L, Nilsson P, Nishimura S, Nyanin AS, Nystrand J, O'Brien E, Ogilvie CA, Ohnishi H, Ojha ID, Ono M, Onuchin V, Oskarsson A, Osterman L, Otterlund I, Oyama K, Paffrath L, Palounek AP, Pantuev VS, Papavassiliou V, Pate SF, Peitzmann T, Petridis AN, Pinkenburg C, Pisani RP, Pitukhin P, Plasil F, Pollack M, Pope K, Purschke ML, Ravinovich I, Read KF, Reygers K, Riabov V, Riabov Y, Rosati M, Rose AA, Ryu SS, Saito N, Sakaguchi A, Sakaguchi T, Sako H, Sakuma T, Samsonov V, Sangster TC, Santo R, Sato HD, Sato S, Sawada S, Schlei BR, Schutz Y, Semenov V, Seto R, Shea TK, Shein I, Shibata TA, Shigaki K, Shiina T, Shin YH, Sibiriak IG, Silvermyr D, Sim KS, Simon-Gillo J, Singh CP, Singh V, Sivertz M, Soldatov A, Soltz RA, Sorensen S, Stankus PW, Starinsky N, Steinberg P, Stenlund E, Ster A, Stoll SP, Sugioka M, Sugitate T, Sullivan JP, Sumi Y, Sun Z, Suzuki M, Takagui EM, Taketani A, Tamai M, Tanaka KH, Tanaka Y, Taniguchi E, Tannenbaum MJ, Thomas J, Thomas JH, Thomas TL, Tian W, Tojo J, Torii H, Towell RS, Tserruya I, Tsuruoka H, Tsvetkov AA, Tuli SK, Tydesjö H, Tyurin N, Ushiroda T, van Hecke HW, Velissaris C, Velkovska J, Velkovsky M, Vinogradov AA, Volkov MA, Vorobyov A, Vznuzdaev E, Wang H, Watanabe Y, White SN, Witzig C, Wohn FK, Woody CL, Xie W, Yagi K, Yokkaichi S, Young GR, Yushmanov IE, Zajc WA, Zhang Z, Zhou S. Measurement of the midrapidity transverse energy distribution from square root of [(s)NN] = 130 GeV Au + Au collisions at RHIC. Phys Rev Lett 2001; 87:052301. [PMID: 11497762 DOI: 10.1103/physrevlett.87.052301] [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] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/18/2001] [Indexed: 05/23/2023]
Abstract
The first measurement of energy produced transverse to the beam direction at the Relativistic Heavy-Ion Collider at Brookhaven National Laboratory is presented. The midrapidity transverse energy density per participating nucleon rises steadily with the number of participants, closely paralleling the rise in charged-particle density, such that <E(T)>/<N(ch)> remains relatively constant as a function of centrality. The energy density calculated via Bjorken's prescription for the 2% most central Au+Au collisions at square root[s(NN)] = 130 GeV is at least epsilon(Bj) = 4.6 GeV/fm(3), which is a factor of 1.6 larger than found at sqrt[s(NN)] = 17.2 GeV ( Pb+Pb at CERN).
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Affiliation(s)
- K Adcox
- Vanderbilt University, Nashville, Tennessee 37235, USA
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Adcox K, Adler SS, Ajitanand NN, Akiba Y, Alexander J, Aphecetche L, Arai Y, Aronson SH, Averbeck R, Awes TC, Barish KN, Barnes PD, Barrette J, Bassalleck B, Bathe S, Baublis V, Bazilevsky A, Belikov S, Bellaiche FG, Belyaev ST, Bennett MJ, Berdnikov Y, Botelho S, Brooks ML, Brown DS, Bruner N, Bucher D, Buesching H, Bumazhnov V, Bunce G, Burward-Hoy J, Butsyk S, Carey TA, Chand P, Chang J, Chang WC, Chavez LL, Chernichenko S, Chi CY, Chiba J, Chiu M, Choudhury RK, Christ T, Chujo T, Chung MS, Chung P, Cianciolo V, Cole BA, D'Enterria DG, David G, Delagrange H, Denisov A, Deshpande A, Desmond EJ, Dietzsch O, Dinesh BV, Drees A, Durum A, Dutta D, Ebisu K, Efremenko YV, El Chenawi K, En'yo H, Esumi S, Ewell L, Ferdousi T, Fields DE, Fokin SL, Fraenkel Z, Franz A, Frawley AD, Fung SY, Garpman S, Ghosh TK, Glenn A, Godoi AL, Goto Y, Greene SV, Grosse Perdekamp M, Gupta SK, Guryn W, Gustafsson HA, Haggerty JS, Hamagaki H, Hansen AG, Hara H, Hartouni EP, Hayano R, Hayashi N, He X, Hemmick TK, Heuser J, Hibino M, Hill JC, Ho DS, Homma K, Hong B, Hoover A, Ichihara T, Imai K, Ippolitov MS, Ishihara M, Jacak BV, Jang WY, Jia J, Johnson BM, Johnson SC, Joo KS, Kametani S, Kang JH, Kann M, Kapoor SS, Kelly S, Khachaturov B, Khanzadeev A, Kikuchi J, Kim DJ, Kim HJ, Kim SY, Kim YG, Kinnison WW, Kistenev E, Kiyomichi A, Klein-Boesing C, Klinksiek S, Kochenda L, Kochetkov D, Kochetkov V, Koehler D, Kohama T, Kozlov A, Kroon PJ, Kurita K, Kweon MJ, Kwon Y, Kyle GS, Lacey R, Lajoie JG, Lauret J, Lebedev A, Lee DM, Leitch MJ, Li XH, Li Z, Lim DJ, Liu MX, Liu X, Liu Z, Maguire CF, Mahon J, Makdisi YI, Manko VI, Mao Y, Mark SK, Markacs S, Martinez G, Marx MD, Masaike A, Matathias F, Matsumoto T, McGaughey PL, Melnikov E, Merschmeyer M, Messer F, Messer M, Miake Y, Miller TE, Milov A, Mioduszewski S, Mischke RE, Mishra GC, Mitchell JT, Mohanty AK, Morrison DP, Moss JM, Mühlbacher F, Muniruzzaman M, Murata J, Nagamiya S, Nagasaka Y, Nagle JL, Nakada Y, Nandi BK, Newby J, Nikkinen L, Nilsson P, Nishimura S, Nyanin AS, Nystrand J, O'Brien E, Ogilvie CA, Ohnishi H, Ojha ID, Ono M, Onuchin V, Oskarsson A, Osterman L, Otterlund I, Oyama K, Paffrath L, Palounek AP, Pantuev VS, Papavassiliou V, Pate SF, Peitzmann T, Petridis AN, Pinkenburg C, Pisani RP, Pitukhin P, Plasil F, Pollack M, Pope K, Purschke ML, Ravinovich I, Read KF, Reygers K, Riabov V, Riabov Y, Rosati M, Rose AA, Ryu SS, Saito N, Sakaguchi A, Sakaguchi T, Sako H, Sakuma T, Samsonov V, Sangster TC, Santo R, Sato HD, Sato S, Sawada S, Schlei BR, Schutz Y, Semenov V, Seto R, Shea TK, Shein I, Shibata TA, Shigaki K, Shiina T, Shin YH, Sibiriak IG, Silvermyr D, Sim KS, Simon-Gillo J, Singh CP, Singh V, Sivertz M, Soldatov A, Soltz RA, Sorensen S, Stankus PW, Starinsky N, Steinberg P, Stenlund E, Ster A, Stoll SP, Sugioka M, Sugitate T, Sullivan JP, Sumi Y, Sun Z, Suzuki M, Takagui EM, Taketani A, Tamai M, Tanaka KH, Tanaka Y, Taniguchi E, Tannenbaum MJ, Thomas J, Thomas JH, Thomas TL, Tian W, Tojo J, Torii H, Towell RS, Tserruya I, Tsuruoka H, Tsvetkov AA, Tuli SK, Tydesjö H, Tyurin N, Ushiroda T, van Hecke HW, Velissaris C, Velkovska J, Velkovsky M, Vinogradov AA, Volkov MA, Vorobyov A, Vznuzdaev E, Wang H, Watanabe Y, White SN, Witzig C, Wohn FK, Woody CL, Xie W, Yagi K, Yokkaichi S, Young GR, Yushmanov IE, Zajc WA, Zhang Z, Zhou S. Centrality dependence of charged particle multiplicity in Au-Au collisions at square root of (s)NN = 130 GeV. Phys Rev Lett 2001; 86:3500-3505. [PMID: 11328008 DOI: 10.1103/physrevlett.86.3500] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/21/2000] [Indexed: 05/23/2023]
Abstract
We present results for the charged-particle multiplicity distribution at midrapidity in Au-Au collisions at square root of [s(NN)] = 130 GeV measured with the PHENIX detector at RHIC. For the 5% most central collisions we find dN(ch)/d eta(vertical line eta = 0) = 622+/-1(stat)+/-41(syst). The results, analyzed as a function of centrality, show a steady rise of the particle density per participating nucleon with centrality.
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Affiliation(s)
- K Adcox
- Vanderbilt University, Nashville, Tennessee 37235, USA
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Abstract
OBJECTIVE/METHOD The case notes of 111 women presenting consecutively to an outpatient eating disorders clinic with bulimia nervosa or atypical bulimia nervosa were reviewed for pretreatment factors that predicted dropout in a retrospective study. Dropping out was conceptualized as not just a patient characteristic but as a transaction between patient and therapist. Factors believed to influence this transaction included experiences of childhood trauma, severity of eating disorder characteristics and comorbid psychiatric symptoms, demographic characteristics, waiting times for assessment and therapy, distance traveled to the clinic, previous experience of psychiatric treatment, and Eating Disorder Inventory (EDI) and Rosenberg Self-Esteem questionnaire results. RESULTS Witnessing parental breakup, being younger, being employed outside the home, and having previous experience of psychiatric treatment predicted dropping out in logistic regression models. Experiences of childhood trauma had a dose-effect relationship with dropping out. Having lower overall severity of eating disorder characteristics may also relate to dropping out. DISCUSSION An impaired ability to trust resulting from disturbed attachments may link childhood trauma and dropping out.
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Affiliation(s)
- J Mahon
- Department of Psychiatry, University of Leicester, Leicester, United Kingdom
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Mahon J, Cusack T. Integration of Children with Cerebral Palsy into Mainstream Schools. Physiotherapy 2000. [DOI: 10.1016/s0031-9406(05)61394-6] [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: 10/25/2022]
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Mahon J. Direct and indirect randomized trials of screening: the A's and D's of evidence-based clinical practice guidelines. CMAJ 2000; 162:1002-4. [PMID: 10763399 PMCID: PMC1232304] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/16/2023] Open
Affiliation(s)
- J Mahon
- Department of Medicine, University of Western Ontario, London.
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Souba WW, Mahon J. Competing in the new health care environment: strategies for surgical oncology. Ann Surg Oncol 1999; 6:614-22. [PMID: 10493633 DOI: 10.1007/s10434-999-0614-2] [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: 10/25/2022]
Affiliation(s)
- W W Souba
- Division of Surgical Oncology, Massachusetts General Hospital, Harvard Medical School, Boston 02114, USA.
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Kaback DB, Barber D, Mahon J, Lamb J, You J. Chromosome size-dependent control of meiotic reciprocal recombination in Saccharomyces cerevisiae: the role of crossover interference. Genetics 1999; 152:1475-86. [PMID: 10430577 PMCID: PMC1460698 DOI: 10.1093/genetics/152.4.1475] [Citation(s) in RCA: 81] [Impact Index Per Article: 3.2] [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: 11/12/2022] Open
Abstract
In the yeast Saccharomyces cerevisiae, small chromosomes undergo meiotic reciprocal recombination (crossing over) at rates (centimorgans per kilobases) greater than those of large chromosomes, and recombination rates respond directly to changes in the total size of a chromosomal DNA molecule. This phenomenon, termed chromosome size-dependent control of meiotic reciprocal recombination, has been suggested to be important for ensuring that homologous chromosomes cross over during meiosis. The mechanism of this regulation was investigated by analyzing recombination in identical genetic intervals present on different size chromosomes. The results indicate that chromosome size-dependent control is due to different amounts of crossover interference. Large chromosomes have high levels of interference while small chromosomes have much lower levels of interference. A model for how crossover interference directly responds to chromosome size is presented. In addition, chromosome size-dependent control was shown to lower the frequency of homologous chromosomes that failed to undergo crossovers, suggesting that this control is an integral part of the mechanism for ensuring meiotic crossing over between homologous chromosomes.
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Affiliation(s)
- D B Kaback
- Department of Microbiology and Molecular Genetics, University of Medicine and Dentistry, New Jersey Medical School, Newark, New Jersey 07103, USA.
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Edmonds M, Bauer M, Osborn S, Lutfiyya H, Mahon J, Doig G, Grundy P, Gittens C, Molenkamp G, Fenlon D. Using the Vista 350 telephone to communicate the results of home monitoring of diabetes mellitus to a central database and to provide feedback. Int J Med Inform 1998; 51:117-25. [PMID: 9794328 DOI: 10.1016/s1386-5056(98)00109-9] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.8] [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
PURPOSE Self-monitoring of blood glucose has become routine practice in the management of diabetes mellitus. When all the data is complete, however, the amount of information to be taken into account when making therapeutic decisions becomes overwhelming not only for the patient but for the healthcare provider. Computers excel at processing large amounts of information quickly and impassively, which makes them potentially helpful for collating and communicating the data in a manner that facilitates decision-making by patient and healthcare provider. This should in turn improve control and help prevent acute and chronic complications. METHOD Using the Vista 350 telephone, we have developed a system that enables patients with diabetes to record home monitoring data to a central database and receive feedback summaries. A small trial was conducted to determine if the Vista 350 telephone is an acceptable and feasible method to communicate the results of home monitoring of diabetes mellitus to a central database and receive feedback summaries. A total of 35 volunteers with insulin-requiring diabetes mellitus in the London area were randomly allocated to either use the Vista 350 phone for 6 months, or to a control group that continued to use traditional methods for recording home monitoring data. RESULTS 33 of the 35 patients enrolled completed the trial. All 16 patients who began using the phone continued to do so for 6 months confirming the feasibility of the system. Questionnaires completed at 3 and 6 months confirmed the Vista 350 telephone system to be acceptable to the subjects. The results will enable some minor modifications to be made to the telephone system before a larger definitive trial, designed to determine the effect on diabetes control, is conducted later this year.
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Affiliation(s)
- M Edmonds
- Department of Medicine, Faculty of Medicine, University of Western Ontario, Canada.
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Abstract
Four polyubiquitin genes, PUB1, PUB2, PUB3 and PUB4, were isolated from a pea (Pisum sativum L. cv Alaska) genomic library and completely sequenced. They represent all of the four polyubiquitin genes of the ubiquitin gene family in pea. The coding regions of the genes contain five or six coding units arranged as tandem repeats. The different coding repeats of the four genes share homologies between 75 and 97%, encoding the same protein of 76 amino acids identical to those from other higher plants. The open reading frames of PUB1, PUB2 and PUB4 terminate in the additional amino acid, phenylalanine (F), and PUB3 terminates in isoleucine (I). The polyubiquitin genes all contain intron sequences ranging from 584 to 1114 bp immediately 5' to the ATG initiation codon of the first coding sequence. Of the four genes, three are associated with long AT-rich (85.4-89.4% A+T) sequences ranging from about 331 to 478 bp at their 5' or 3' ends. The PUB4 gene was found to be linked to a moderate to highly repetitive DNA at its 5' flanking sequence. The greater sequence homology between different genes than among individual repeating units of a gene suggests that the polyubiquitin genes may have arisen by gene duplication of a single gene sequence.
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Affiliation(s)
- X Xia
- Plant Biotechnology Institute, National Research Council of Canada, 110 Gymnasium Place, Saskatoon, SK S7N 0W9, Canada
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Stiell I, Hébert P, Wells G, Laupacis A, Vandemheen K, Weitzman B, Maloney J, Mahon J, Kirby A, Higginson L, Gibson J, Eisenhauer M, Dreyer J. O-53 The Ontario trial of active compression-decompression cardiopulmonary resuscitation for in hospital cardiac arrest. Resuscitation 1996. [DOI: 10.1016/0300-9572(96)83842-1] [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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Abstract
OBJECTIVE To compare outcomes between groups of patients with irreversible chronic airflow limitation given theophylline by n of 1 trials or standard practice. DESIGN Randomised controlled study of n of 1 trials versus standard practice. SETTING Tertiary care center outpatient department. SUBJECTS 31 patients with irreversible chronic airflow limitation who were unsure that theophylline was helpful after an open trial. INTERVENTIONS n Of 1 trials (single patient randomised multiple crossover comparisons of theophylline against placebo) followed published guidelines. For standard practice patients theophylline was stopped and resumed if their dyspnoea worsened; if their dyspnoea then improved theophylline was continued. For both groups a decision to continue or stop the drug was made within three months of randomisation. MAIN OUTCOME MEASURES Exercise capacity as measured by six minute walking distance, quality of life as measured by the chronic respiratory disease questionnaire at baseline and six months after randomisation, and proportions of patients taking theophylline at six months. RESULTS 26 patients completed follow up. 47% fewer n of 1 trial patients than standard practice patients were taking theophylline at six months (5/14 versus 10/12; 95% confidence interval of difference 14% to 80%) without differences in exercise capacity or quality of life. CONCLUSIONS n Of 1 trials led to less theophylline use without adverse effects on exercise capacity or quality of life in patients with irreversible chronic airflow limitation. These data directly support the presence of a clinically important bias towards unnecessary treatment during open prescription of theophylline for irreversible chronic airflow limitation. Confirmation in a larger study and similar studies for other problems appropriate for n of 1 trials are needed before widespread use of n of 1 trials can be advocated in routine clinical practice.
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Affiliation(s)
- J Mahon
- Department of Medicine and Epidemiology, University of Western Ontario, London, Canada
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Abstract
Restriction analysis of the Salmonella enteritidis virulence plasmid, followed by hybridisation with radiolabelled S. typhimurium and S. dublin plasmids, revealed a 2-kb Pstl/Bg/l fragment that was specific to S. enteritidis. Colony hybridisation experiments with this fragment detected 29 out of 31 S. enteritidis strains tested. S. blegdam, S. moscow and S. paratyphi C also hybridised with this fragment and a comparison of the plasmids from these serotypes revealed striking similarities. A Pstl/Pvull sub-clone of the 2-kb fragment was used to design primers for quantitative polymerase chain reaction (QPCR) detection of S. enteritidis from broth culture.
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Affiliation(s)
- M W Wood
- Institute for Animal Health, Compton Laboratory, Newbury, Berkshire, UK
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Abstract
A multiplex PCR technique was compared with standard bacteriological techniques for the detection of Salmonella, and Salm. enteritidis in particular, in samples of chicken skin obtained from retail outlets. Five of 68 samples were positive by both systems (7.4%), 58 of 68 were negative by both systems (85%), five were positive by PCR only (7.4%) but none were positive by culture only. The PCR was quicker and more sensitive than the bacteriological methods, finding 15% of samples positive for Salmonella compared to 7.4%, and taking less than 24 h to reach a result as opposed to 2-3 d.
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Affiliation(s)
- J Mahon
- Institute for Animal Health, Newbury, Berks, UK
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Abstract
A quick, semi-quantitative method of detecting Salmonella species which contain the virulence plasmid has been developed using the polymerase chain reaction (PCR). A pair of primers have been synthesized encompassing a 500 bp fragment of the spvR virulence gene. Competitor DNA consisting of the spvR gene with a 94 bp deletion situated between the primer recognition sequences, was cloned into a plasmid vector. Co-amplification of the 'unknown' target salmonella DNA with known quantities of competitor DNA in the same reaction tube gave PCR products of 500 and 406 bp respectively. Visual assessment of the ratio of the two products on ethidium bromide stained agarose gels provided an estimate of the approximate number of salmonella cells present in avian faeces. The technique could be applied to detect quantifiably any non-host DNA in clinical samples if a suitable DNA sequence for primer construction is available.
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Affiliation(s)
- J Mahon
- AFRC Institute for Animal Health, Compton Laboratory, Newbury, Berkshire, UK
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Abstract
Actin is a neuronal protein involved in axonal transport and nerve regeneration, both of which are known to be impaired in experimental diabetes. To determine if actin is subject to glycation, we rendered rats diabetic by injection of streptozotocin. Two or 6 weeks later brains were removed and a preparation of cytoskeletal proteins was analyzed by two-dimensional polyacrylamide gel electrophoresis. Brains from diabetic animals contained an extra polypeptide that migrated close to actin and reacted with monoclonal antibody C4 against actin. It was also found in a preparation of soluble synaptic proteins from diabetic rat brain, indicating that it was at least partly neuronal in origin. This polypeptide could be produced by incubation of cytoskeletal proteins from brains of nondiabetic rats with glucose-6-phosphate in vitro. The appearance of this glycated actin in diabetic animals was prevented by administration of insulin for a period of 6 weeks. We could not detect any effect of glycation in vitro on the ability of muscle G-actin to form F-actin filaments and its significance for the function of actin remains to be determined. The finding that glycation of platelet-derived actin from diabetic patients was significantly increased implies that the abnormality may also occur in clinical diabetes.
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Affiliation(s)
- C Pekiner
- Department of Pharmacology and Therapeutics, University of Liverpool, England
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Abstract
OBJECTIVE To describe the natural course of clinical remission in insulin-dependent diabetes mellitus (IDDM) when insulin dose is minimized without loss of target glycemia and to identify factors that predict clinical remission. RESEARCH DESIGN AND METHODS Ninety-five patients, who were placebo-treated control subjects in the Canadian-European multicenter randomized trial of cyclosporin A in recent-onset IDDM, were studied. RESULTS The mean insulin dose decreased during the first months after diagnosis, with a nadir at 3 mo, when 27% of the patients did not require insulin to maintain target glycemia. At 1 yr, 10% of patients still did not need insulin. Patients not receiving insulin who had glycosylated hemoglobin within the normal range were called remitters. Mean basal and glucagon-stimulated C-peptide values were significantly (P less than 0.025) higher in remitters than nonremitters at the start of the study. Therefore, all patients were divided into those with values above the mean stimulated C-peptide (0.4 nM) and those with values below the mean at entry. The probability of entering a remission with a stimulated C-peptide greater than 0.4 nM was 10 times as high (P less than 0.05) as for those with a stimulated C-peptide below this level. Surprisingly, the beginning and end of the remission were associated with neither major changes in C-peptide levels nor islet cell antibody and insulin-antibody titer. A more rapid loss of stimulated C-peptide occurred in patients who lacked HLA-DR3 and -DR4 (P less than 0.05 at mo 9). CONCLUSIONS This study shows a higher spontaneous clinical remission rate than expected during the 1st yr after diagnosis. Preserved beta-cell function at entry predicts a greater chance of entering a remission, and a more rapid loss of beta-cell function was seen in patients without HLA-DR3 and -DR4.
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Affiliation(s)
- S Martin
- Diabetes Research Institute, Düsseldorf, Germany
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