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Orbai AM, de Wit M, Mease PJ, Callis Duffin K, Elmamoun M, Tillett W, Campbell W, FitzGerald O, Gladman DD, Goel N, Gossec L, Hoejgaard P, Leung YY, Lindsay C, Strand V, van der Heijde DM, Shea B, Christensen R, Coates L, Eder L, McHugh N, Kalyoncu U, Steinkoenig I, Ogdie A. Updating the Psoriatic Arthritis (PsA) Core Domain Set: A Report from the PsA Workshop at OMERACT 2016. J Rheumatol 2017; 44:1522-1528. [PMID: 28148697 DOI: 10.3899/jrheum.160904] [Citation(s) in RCA: 75] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/20/2016] [Indexed: 01/31/2023]
Abstract
OBJECTIVE To include the patient perspective in accordance with the Outcome Measures in Rheumatology (OMERACT) Filter 2.0 in the updated Psoriatic Arthritis (PsA) Core Domain Set for randomized controlled trials (RCT) and longitudinal observational studies (LOS). METHODS At OMERACT 2016, research conducted to update the PsA Core Domain Set was presented and discussed in breakout groups. The updated PsA Core Domain Set was voted on and endorsed by OMERACT participants. RESULTS We conducted a systematic literature review of domains measured in PsA RCT and LOS, and identified 24 domains. We conducted 24 focus groups with 130 patients from 7 countries representing 5 continents to identify patient domains. We achieved consensus through 2 rounds of separate surveys with 50 patients and 75 physicians, and a nominal group technique meeting with 12 patients and 12 physicians. We conducted a workshop and breakout groups at OMERACT 2016 in which findings were presented and discussed. The updated PsA Core Domain Set endorsed with 90% agreement by OMERACT 2016 participants included musculoskeletal disease activity, skin disease activity, fatigue, pain, patient's global assessment, physical function, health-related quality of life, and systemic inflammation, which were recommended for all RCT and LOS. These were important, but not required in all RCT and LOS: economic cost, emotional well-being, participation, and structural damage. Independence, sleep, stiffness, and treatment burden were on the research agenda. CONCLUSION The updated PsA Core Domain Set was endorsed at OMERACT 2016. Next steps for the PsA working group include evaluation of PsA outcome measures and development of a PsA Core Outcome Measurement Set.
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Mills-Davies N, Butler D, Norton E, Thompson D, Sarwar M, Guo J, Gill R, Azim N, Coker A, Wood SP, Erskine PT, Coates L, Cooper JB, Rashid N, Akhtar M, Shoolingin-Jordan PM. Structural studies of substrate and product complexes of 5-aminolaevulinic acid dehydratase from humans,Escherichia coliand the hyperthermophilePyrobaculum calidifontis. ACTA CRYSTALLOGRAPHICA SECTION D-STRUCTURAL BIOLOGY 2017; 73:9-21. [DOI: 10.1107/s2059798316019525] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/30/2016] [Accepted: 12/06/2016] [Indexed: 11/11/2022]
Abstract
A number of X-ray analyses of an enzyme involved in a key early stage of tetrapyrrole biosynthesis are reported. Two structures of human 5-aminolaevulinate dehydratase (ALAD), native and recombinant, have been determined at 2.8 Å resolution, showing that the enzyme adopts an octameric quaternary structure in accord with previously published analyses of the enzyme from a range of other species. However, this is in contrast to the finding that a disease-related F12L mutant of the human enzyme uniquely forms hexamers [Breiniget al.(2003),Nature Struct. Biol.10, 757–763]. Monomers of all ALADs adopt the TIM-barrel fold; the subunit conformation that assembles into the octamer includes the N-terminal tail of one monomer curled around the (α/β)8barrel of a neighbouring monomer. Both crystal forms of the human enzyme possess two monomers per asymmetric unit, termedAandB. In the native enzyme there are a number of distinct structural differences between theAandBmonomers, with the latter exhibiting greater disorder in a number of loop regions and in the active site. In contrast, the second monomer of the recombinant enzyme appears to be better defined and the active site of both monomers clearly possesses a zinc ion which is bound by three conserved cysteine residues. In native human ALAD, theAmonomer also has a ligand resembling the substrate ALA which is covalently bound by a Schiff base to one of the active-site lysines (Lys252) and is held in place by an ordered active-site loop. In contrast, these features of the active-site structure are disordered or absent in theBsubunit of the native human enzyme. The octameric structure of the zinc-dependent ALAD from the hyperthermophilePyrobaculum calidifontisis also reported at a somewhat lower resolution of 3.5 Å. Finally, the details are presented of a high-resolution structure of theEscherichia coliALAD enzyme co-crystallized with a noncovalently bound moiety of the product, porphobilinogen (PBG). This structure reveals that the pyrrole side-chain amino group is datively bound to the active-site zinc ion and that the PBG carboxylates interact with the enzymeviahydrogen bonds and salt bridges with invariant residues. A number of hydrogen-bond interactions that were previously observed in the structure of yeast ALAD with a cyclic intermediate resembling the product PBG appear to be weaker in the new structure, suggesting that these interactions are only optimal in the transition state.
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Coates L, Helliwell P. More than meets the eye? Lancet 2016; 388:e15. [PMID: 27894663 DOI: 10.1016/s0140-6736(16)32188-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Rothery C, Bojke L, Richardson G, Bojke C, Moverley A, Coates L, Thorp L, Waxman R, Helliwell P. A discrete choice experiment to explore patients' willingness to risk disease relapse from treatment withdrawal in psoriatic arthritis. Clin Rheumatol 2016; 35:2967-2974. [PMID: 27796664 PMCID: PMC5118397 DOI: 10.1007/s10067-016-3452-1] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2016] [Revised: 09/07/2016] [Accepted: 10/12/2016] [Indexed: 11/26/2022]
Abstract
The objective of this study is to assess patient preferences for treatment-related benefits and risk of disease relapse in the management of low disease states of psoriatic arthritis (PsA). Focus groups with patients and a literature review were undertaken to determine the characteristics of treatment and symptoms of PsA important to patients. Patient preferences were assessed using a discrete choice experiment which compared hypothetical treatment profiles of the risk and benefits of treatment withdrawal. The risk outcome included increased risk of disease relapse, while benefit outcomes included reduced sickness/nausea from medication and changes in health-related quality of life. Each patient completed 12 choice sets comparing treatment profiles. Preference weights were estimated using a logic regression model, and the maximum acceptable risk in disease relapse for a given improvement in benefit outcomes was elicited. Final sample included 136 patients. Respondents attached the greatest importance to eliminating severe side effects of sickness/nausea and the least importance to a change in risk of relapse. Respondents were willing to accept an increase in the risk of relapse of 32.6 % in order to eliminate the side effects of sickness/nausea. For improvements in health status, the maximum acceptable risk in relapse was comparable to a movement from some to no sickness/nausea. The study suggests that patients in low disease states of PsA are willing to accept greater risks of relapse for improvements in side effects of sickness/nausea and overall health status, with the most important benefit attribute being the elimination of severe sickness or nausea.
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Langan PS, Close DW, Coates L, Rocha RC, Ghosh K, Kiss C, Waldo G, Freyer J, Kovalevsky A, Bradbury ARM. Corrigendum to "Evolution and Characterization of a New Reversibly Photoswitching Chromogenic Protein, Dathail" [J. Mol. Biol., 428, (2016), 1776-89]. J Mol Biol 2016; 428:4244. [PMID: 27629583 DOI: 10.1016/j.jmb.2016.08.024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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Orbai AM, de Wit M, Mease P, Shea JA, Gossec L, Leung YY, Tillett W, Elmamoun M, Callis Duffin K, Campbell W, Christensen R, Coates L, Dures E, Eder L, FitzGerald O, Gladman D, Goel N, Grieb SD, Hewlett S, Hoejgaard P, Kalyoncu U, Lindsay C, McHugh N, Shea B, Steinkoenig I, Strand V, Ogdie A. International patient and physician consensus on a psoriatic arthritis core outcome set for clinical trials. Ann Rheum Dis 2016; 76:673-680. [PMID: 27613807 PMCID: PMC5344772 DOI: 10.1136/annrheumdis-2016-210242] [Citation(s) in RCA: 158] [Impact Index Per Article: 19.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2016] [Revised: 08/10/2016] [Accepted: 08/21/2016] [Indexed: 02/02/2023]
Abstract
Objective To identify a core set of domains (outcomes) to be measured in psoriatic arthritis (PsA) clinical trials that represent both patients' and physicians' priorities. Methods We conducted (1) a systematic literature review (SLR) of domains assessed in PsA; (2) international focus groups to identify domains important to people with PsA; (3) two international surveys with patients and physicians to prioritise domains; (4) an international face-to-face meeting with patients and physicians using the nominal group technique method to agree on the most important domains; and (5) presentation and votes at the Outcome Measures in Rheumatology (OMERACT) conference in May 2016. All phases were performed in collaboration with patient research partners. Results We identified 39 unique domains through the SLR (24 domains) and international focus groups (34 domains). 50 patients and 75 physicians rated domain importance. During the March 2016 consensus meeting, 12 patients and 12 physicians agreed on 10 candidate domains. Then, 49 patients and 71 physicians rated these domains' importance. Five were important to >70% of both groups: musculoskeletal disease activity, skin disease activity, structural damage, pain and physical function. Fatigue and participation were important to >70% of patients. Patient global and systemic inflammation were important to >70% of physicians. The updated PsA core domain set endorsed by 90% of OMERACT 2016 participants includes musculoskeletal disease activity, skin disease activity, pain, patient global, physical function, health-related quality of life, fatigue and systemic inflammation. Conclusions The updated PsA core domain set incorporates patients' and physicians' priorities and evolving PsA research. Next steps include identifying outcome measures that adequately assess these domains.
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Mease P, Kavanaugh A, Coates L, McInnes I, Hojnik M, Zhang Y, Anderson J, Dorr A, Gladman D. THU0431 The Prediction and Benefits of Minimal Disease Activity in Patients with Psoriatic Arthritis in the Adept Trial. Ann Rheum Dis 2015. [DOI: 10.1136/annrheumdis-2015-eular.1469] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Moverley A, Coates L, Marzo-Ortega H, Waxman R, Torgerson D, Cocks K, Watson J, Helliwell PS. A feasibility study for a randomised controlled trial of treatment withdrawal in psoriatic arthritis (REmoval of treatment for patients in REmission in psoriatic ArThritis (RETREAT (F)). Clin Rheumatol 2015; 34:1407-12. [DOI: 10.1007/s10067-015-2886-1] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2014] [Revised: 01/16/2015] [Accepted: 01/22/2015] [Indexed: 11/29/2022]
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Helliwell P, Coates L, Chandran V, Gladman D, de Wit M, FitzGerald O, Kavanaugh A, Strand V, Mease PJ, Boehncke WH, Langley RG, Lubrano E, Maccarone M, Schulze-Koops H, Miceli-Richard C, Queiro R. Qualifying unmet needs and improving standards of care in psoriatic arthritis. Arthritis Care Res (Hoboken) 2014; 66:1759-66. [PMID: 25047391 PMCID: PMC4282108 DOI: 10.1002/acr.22404] [Citation(s) in RCA: 62] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2014] [Revised: 07/08/2014] [Accepted: 07/08/2014] [Indexed: 11/06/2022]
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Beaven G, Bowyer A, Erskine P, Wood SP, McCoy A, Coates L, Keegan R, Lebedev A, Hopper DJ, Kaderbhai MA, Cooper JB. Crystallization and preliminary X-ray characterization of the 2,4'-dihydroxyacetophenone dioxygenase from Alcaligenes sp. 4HAP. Acta Crystallogr F Struct Biol Commun 2014; 70:823-6. [PMID: 24915102 PMCID: PMC4051546 DOI: 10.1107/s2053230x14009649] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2014] [Accepted: 04/29/2014] [Indexed: 11/10/2022] Open
Abstract
The enzyme 2,4'-dihydroxyacetophenone dioxygenase (or DAD) catalyses the conversion of 2,4'-dihydroxyacetophenone to 4-hydroxybenzoic acid and formic acid with the incorporation of molecular oxygen. Whilst the vast majority of dioxygenases cleave within the aromatic ring of the substrate, DAD is very unusual in that it is involved in C-C bond cleavage in a substituent of the aromatic ring. There is evidence that the enzyme is a homotetramer of 20.3 kDa subunits each containing nonhaem iron and its sequence suggests that it belongs to the cupin family of dioxygenases. By the use of limited chymotrypsinolysis, the DAD enzyme from Alcaligenes sp. 4HAP has been crystallized in a form that diffracts synchrotron radiation to a resolution of 2.2 Å.
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Coates L, Guillon F, El Khatib A, Laborde-Castérot H. Hyperacousie et travail. ARCH MAL PROF ENVIRO 2014. [DOI: 10.1016/j.admp.2014.03.077] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Conaghan PG, McQueen FM, Bird P, Peterfy C, Haavardsholm E, Gandjbakhch F, Eshed I, Haugen IK, Lillegraven S, Døhn UM, Ejbjerg B, Foltz V, Coates L, Bøyesen P, Hermann KG, Freeston J, Lassere M, O’Connor P, Emery P, Genant H, Østergaard M. Update on the OMERACT Magnetic Resonance Imaging Task Force: Research and Future Directions. J Rheumatol 2013; 41:383-5. [DOI: 10.3899/jrheum.131085] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Magnetic resonance imaging (MRI) provides an important biomarker across a range of rheumatological diseases. At the Outcome Measures in Rheumatology (OMERACT) 11 meeting, the MRI task force continued its work of developing and improving the use of MRI outcomes for use in clinical trials. The breadth of pathology in the Rheumatoid Arthritis MRI Score has been strengthened with further work on the development of a joint space narrowing score, and a series of exercises presented at OMERACT 11 demonstrated good reliability and construct validity for this assessment. Understanding the importance of residual inflammation after RA treatment remains a major focus of the group’s work. Analyses were presented on defining the level of synovitis (using MRI scores of a single hand) that would predict absence of erosion progression. The development of the OMERACT Hand Osteoarthritis MRI score has continued with substantial work presented on its iterative development, including pathology definition, scaling, and subsequent reliability of the score. Optimizing the role of MRI as a robust biomarker and surrogate outcome remains a priority for this group.
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Karrar S, Shiwen X, Nikotorowicz-Buniak J, Abraham DJ, Denton C, Stratton R, Bayley R, Kite KA, Clay E, Smith JP, Kitas GD, Buckley C, Young SP, Ye L, Zhang L, Goodall J, Gaston H, Xu H, Lutalo PM, Zhao Y, Meng Choong L, Sangle S, Spencer J, D'Cruz D, Rysnik OJ, McHugh K, Bowness P, Rump-Goodrich L, Mattey D, Kehoe O, Middleton J, Cartwright A, Schmutz C, Askari A, Middleton J, Gardner DH, Jeffery LE, Raza K, Sansom DM, Clay E, Bayley R, Fitzpatrick M, Wallace G, Young S, Shaw J, Hatano H, Cauli A, Giles JL, McHugh K, Mathieu A, Bowness P, Kollnberger S, Webster S, Ellis L, O'Brien LM, Fitzmaurice TJ, Gaston H, Goodall J, Nazeer Moideen A, Evans L, Osgood L, Williams A, Jones S, Thomas C, O'Donnell V, Nowell M, Ouboussad L, Savic S, Dickie LJ, Hintze J, Wong CH, Cook GP, Buch M, Emery P, McDermott MF, Hardcastle SA, Gregson CL, Deere K, Davey Smith G, Dieppe P, Tobias JH, Dennison E, Edwards M, Bennett J, Coggon D, Palmer K, Cooper C, McWilliams D, Young A, Kiely PD, Walsh D, Taylor HJ, Harding I, Hutchinson J, Nelson I, Blom A, Tobias J, Clark E, Parker J, Bukhari M, McWilliams D, Jayakumar K, Young A, Kiely P, Walsh D, Diffin J, Lunt M, Marshall T, Chipping J, Symmons D, Verstappen S, Taylor HJ, Harding I, Hutchinson J, Nelson I, Tobias J, Clark E, Bluett J, Bowes J, Ho P, McHugh N, Buden D, Fitzgerald O, Barton A, Glossop JR, Nixon NB, Emes RD, Dawes PT, Farrell WE, Mattey DL, Scott IC, Steer S, Seegobin S, Hinks AM, Eyre S, Morgan A, Wilson AG, Hocking L, Wordsworth P, Barton A, Worthington J, Cope A, Lewis CM, Guerra S, Ahmed BA, Denton C, Abraham D, Fonseca C, Robinson J, Taylor J, Haroon Rashid L, Flynn E, Eyre S, Worthington J, Barton A, Isaacs J, Bowes J, Wilson AG, Barrett JH, Morgan A, Kingston B, Ahmed M, Kirwan JR, Marshall R, Chapman K, Pearson R, Heycock C, Kelly C, Rynne M, Saravanan V, Hamilton J, Saeed A, Coughlan R, Carey JJ, Farah Z, Matthews W, Bell C, Petford S, Tibbetts LM, Douglas KMJ, Holden W, Ledingham J, Fletcher M, Winfield R, Price Z, Mackay K, Dixon C, Oppong R, Jowett S, Nicholls E, Whitehurst D, Hill S, Hammond A, Hay E, Dziedzic K, Righetti C, Lebmeier M, Manning VL, Hurley M, Scott DL, Choy E, Bearne L, Nikiphorou E, Morris S, James D, Kiely P, Walsh D, Young A, Wong EC, Long J, Fletcher A, Fletcher M, Holmes S, Hockey P, Abbas M, Chattopadhyay C, Flint J, Gayed M, Schreiber K, Arthanari S, Nisar M, Khamashta M, Gordon C, Giles I, Robson J, Kiran A, Maskell J, Arden N, Hutchings A, Emin A, Culliford D, Dasgupta B, Hamilton W, Luqmani R, Jethwa H, Rowczenio D, Trojer H, Russell T, Loeffler J, Hawkins P, Lachmann H, Verma I, Syngle A, Krishan P, Garg N, Flint J, Gayed M, Schreiber K, Arthanari S, Nisar M, Khamashta M, Gordon C, Giles I, McGowan SP, Gerrard DT, Chinoy H, Ollier WE, Cooper RG, Lamb JA, Taborda L, Correia Azevedo P, Isenberg D, Leyland KM, Kiran A, Judge A, Hunter D, Hart D, Javaid MK, Arden N, Cooper C, Edwards MH, Litwic AE, Jameson KA, Deeg D, Cooper C, Dennison E, Edwards MH, Jameson KA, Cushnaghan J, Aihie Sayer A, Deeg D, Cooper C, Dennison E, Jagannath D, Parsons C, Cushnaghan J, Cooper C, Edwards MH, Dennison E, Stoppiello L, Mapp P, Ashraf S, Wilson D, Hill R, Scammell B, Walsh D, Wenham C, Shore P, Hodgson R, Grainger A, Aaron J, Hordon L, Conaghan P, Bar-Ziv Y, Beer Y, Ran Y, Benedict S, Halperin N, Drexler M, Mor A, Segal G, Lahad A, Haim A, Rath U, Morgensteren DM, Salai M, Elbaz A, Vasishta VG, Derrett-Smith E, Hoyles R, Khan K, Abraham DJ, Denton C, Ezeonyeji A, Takhar G, Denton C, Ong V, Loughrey L, Bissell LA, Hensor E, Abignano G, Redmond A, Buch M, Del Galdo F, Hall FC, Malaviya A, Nisar M, Baker S, Furlong A, Mitchell A, Godfrey AL, Ruddlesden M, Hadjinicolaou A, Hughes M, Moore T, O'Leary N, Tracey A, Ennis H, Dinsdale G, Roberts C, Herrick A, Denton CP, Guillevin L, Hunsche E, Rosenberg D, Schwierin B, Scott M, Krieg T, Anderson M, Hall FC, Herrick A, McHugh N, Matucci-Cerinic M, Alade R, Khan K, Xu S, Denton C, Ong V, Nihtyanova S, Ong V, Denton CP, Clark KE, Tam FWK, Unwin R, Khan K, Abraham DJ, Denton C, Stratton RJ, Nihtyanova S, Schreiber B, Ong V, Denton CP, Seng Edwin Lim C, Dasgupta B, Corsiero E, Sutcliffe N, Wardemann H, Pitzalis C, Bombardieri M, Tahir H, Donnelly S, Greenwood M, Smith TO, Easton V, Bacon H, Jerman E, Armon K, Poland F, Macgregor A, van der Heijde D, Sieper J, Elewaut D, Pangan AL, Nguyen D, Badenhorst C, Kirby S, White D, Harrison A, Garcia JA, Stebbings S, MacKay JW, Aboelmagd S, Gaffney K, van der Heijde D, Deodhar A, Braun J, Mack M, Hsu B, Gathany T, Han C, Inman RD, Cooper-Moss N, Packham J, Strauss V, Freeston JE, Coates L, Nam J, Moverley AR, Helliwell P, Hensor E, Wakefield R, Emery P, Conaghan P, Mease P, Fleischmann R, Wollenhaupt J, Deodhar A, Kielar D, Woltering F, Stach C, Hoepken B, Arledge T, van der Heijde D, Gladman D, Fleischmann R, Coteur G, Woltering F, Mease P, Kavanaugh A, Gladman D, van der Heijde D, Purcaru O, Mease P, McInnes I, Kavanaugh A, Gottlieb AB, Puig L, Rahman P, Ritchlin C, Li S, Wang Y, Mendelsohn A, Doyle M, Tillett W, Jadon D, Shaddick G, Cavill C, Robinson G, Sengupta R, Korendowych E, de Vries C, McHugh N, Thomas RC, Shuto T, Busquets-Perez N, Marzo-Ortega H, McGonagle D, Tillett W, Richards G, Cavill C, Sengupta R, Shuto T, Marzo-Ortega H, Thomas RC, Bingham S, Coates L, Emery P, John Hamlin P, Adshead R, Cambridge S, Donnelly S, Tahir H, Suppiah P, Cullinan M, Nolan A, Thompson WM, Stebbings S, Mathieson HR, Mackie SL, Bryer D, Buch M, Emery P, Marzo-Ortega H, Krutikov M, Gray L, Bruce E, Ho P, Marzo-Ortega H, Busquets-Perez N, Thomas RC, Gaffney K, Keat A, Innes W, Pandit R, Kay L, Lapshina S, Myasoutova L, Erdes S, Wallis D, Waldron N, McHugh N, Korendowych E, Thorne I, Harris C, Keat A, Garg N, Syngle A, Vohra K, Khinchi D, Verma I, Kaur L, Jones A, Harrison N, Harris D, Jones T, Rees J, Bennett A, Fazal S, Tugnet N, Barkham N, Basu N, McClean A, Harper L, Amft EN, Dhaun N, Luqmani RA, Little MA, Jayne DR, Flossmann O, McLaren J, Kumar V, Reid DM, Macfarlane GJ, Jones G, Yates M, Watts RA, Igali L, Mukhtyar C, Macgregor A, Robson J, Doll H, Yew S, Flossmann O, Suppiah R, Harper L, Hoglund P, Jayne D, Mukhtyar C, Westman K, Luqmani R, Win Maw W, Patil P, Williams M, Adizie T, Christidis D, Borg F, Dasgupta B, Robertson A, Croft AP, Smith S, Carr S, Youssouf S, Salama A, Pusey C, Harper L, Morgan M. Basic Science * 208. Stem Cell Factor Expression is Increased in the Skin of Patients with Systemic Sclerosis and Promotes Proliferation and Migration of Fibroblasts in vitro. Rheumatology (Oxford) 2013. [DOI: 10.1093/rheumatology/ket195] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
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McGonagle D, McKenna F, Maher T, Kavanagh R, Cunningham AM, Lee M, Grosart R, Wakefield R, Kane D, Schmidt W, Young T, Ndosi M, Lewis M, Hale C, Bird H, Ryan S, Quinn H, McIvor E, Taylor J, Burbage G, Bond D, White J, Chagadama D, Green S, Kay L, Pace AV, Bejarano V, Emery P, Hill J, Hurley M, Porcheret M, Hart O, Oliver D, Coates L, Backhouse M, Coates L, Pickles D, Chamberlain V, Partridge K, Pickles D, Keat A, Maddison P, Taylor P, Dillon A, Chapman V, Pincus T, Shelton D, Ballestar E, Loughlin J, Tak PP, Prinjha R, Regan L, D'Cruz D, Jones G, Lewis J, den Hollander M, Goossens M, de Jong J, Smeets R, Vlaeyen J, Ioannou J, McDonagh J, Clinch J, Pilkington C, Siebert S, Martindale J, Beevor C, Jeffries C, Deighton C, Nye A, Cook D, Taylor P, Firth J, Pickles D, Chamberlain V, Taylor P, Emery P. Essentials in Rheumatology: Disease Management * I29. Recognition and Management of the Auto-Inflammatory Diseases. Rheumatology (Oxford) 2013. [DOI: 10.1093/rheumatology/ket194] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Conaghan PG, McQueen FM, Bird P, Peterfy CG, Haavardsholm EA, Gandjbakhch F, Bøyesen P, Coates L, Ejbjerg B, Eshed I, Foltz V, Hermann KG, Freeston J, Lillegraven S, Lassere M, Wiell C, Anandarajah A, Duer-Jensen A, O'Connor P, Genant HK, Emery P, Ostergaard M. Update on research and future directions of the OMERACT MRI inflammatory arthritis group. J Rheumatol 2012; 38:2031-3. [PMID: 21885512 DOI: 10.3899/jrheum.110419] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The OMERACT Magnetic Resonance Imaging (MRI) Task Force has developed and evolved the psoriatic arthritis MRI score (PsAMRIS) over the last few years, and at OMERACT 10, presented longitudinal evaluation by multiple readers, using PsA datasets obtained from extremity MRI magnets. Further evaluation of this score will require more PsA imaging datasets. As well, due to improved image resolution since the development of the original rheumatoid arthritis MRI scoring system (RAMRIS), the Task Force has worked on semiquantitative assessment of joint space narrowing, and developed a reliable method as a potential RAMRIS addendum, although responsiveness will need to be evaluated. One of the strengths of MRI is the ability to detect subclinical synovitis, so the group worked on obtaining low disease activity/clinical remission datasets from a number of international centers and presented cross-sectional findings. Subsequent longitudinal evaluation of this unique resource will be a major continuing focus for the group.
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FitzGerald O, Helliwell P, Mease P, Mumtaz A, Coates L, Pedersen R, Nab H, Molta C. Application of composite disease activity scores in psoriatic arthritis to the PRESTA data set. Ann Rheum Dis 2011; 71:358-62. [DOI: 10.1136/annrheumdis-2011-200093] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
ObjectiveThis study aimed to compare the performances of the Modified Composite Psoriatic Disease Activity Index (mCPDAI) and the Disease Activity index for PSoriatic Arthritis (DAPSA) in an interventional study of etanercept in psoriatic arthritis.MethodsThe components of the CPDAI and DAPSA were extracted using PRESTA (Psoriasis Randomized Etanercept STudy in subjects with psoriatic Arthritis) study data. Data for four of the five domains of the CPDAI—thus an mCPDAI—were available: joints, skin, dactylitis and enthesitis (spinal involvement was not assessed). Domains in the calculation of DAPSA were subjected to global assessment of pain, swollen and tender joint counts, and C reactive protein. Subjects were randomised to etanercept 50 mg weekly (n=373) or 50 mg twice weekly (n=379) for 12 weeks; all subjects then received etanercept 50 mg weekly for 12 weeks. The performance of the scores at baseline and on weeks 12 and 24 was compared between the two treatment regimens.ResultsThe mCPDAI and DAPSA could distinguish response to treatment comparing baseline and 12-week or 24-week values (p<0.0001). The mCPDAI, not DAPSA, could distinguish response between the two treatment groups at 12 weeks (p=0.0492), but not at 24 weeks. All domains evaluated contributed to the data variability of the mCPDAI; the most significant were dactylitis (r=0.64) and enthesitis (r=0.60).ConclusionIn psoriatic arthritis with severe skin involvement, the mCPDAI was able to distinguish treatment response between the two etanercept doses. DAPSA, while demonstrating improvement in both groups over time, was unable to distinguish response between the different doses of etanercept. Further studies are needed to confirm the sensitivity of both indexes.
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Schuman B, Fisher SZ, Borisova S, Palcic MM, Coates L, Langan PA, Evans SV. Neutron structure of retaining glycosyltransferase GTA. Acta Crystallogr A 2011. [DOI: 10.1107/s0108767311081499] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
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Ng JD, Hughes RC, Coates L, Tomanicek SJ, Garcia-Ruiz JM, Blakeley MP, Langen P. Large volume crystal growth in restricted geometry for neutron crystallography. Acta Crystallogr A 2011. [DOI: 10.1107/s0108767311081505] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
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Coates L, Tomanicek SJ, Wang KK, Weiss KL, Blakeley MP, Chen Y, Cooper J. Active site protonation states of perdeuterated Toho-1 beta lactamase. Acta Crystallogr A 2011. [DOI: 10.1107/s0108767311095493] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Hughes RC, Coates L, Blakeley MP, Tomanicek SJ, Meehan EJ, Garcia-Ruiz JM, Ng JD. X-ray and neutron crystallographic structure-based mechanism of archaeal inorganic pyrophophatase fromThermococcus thioreducins. Acta Crystallogr A 2011. [DOI: 10.1107/s0108767311080445] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Bowes J, Orozco G, Flynn E, Ho P, Brier R, Marzo-Ortega H, Coates L, McManus R, Ryan AW, Kane D, Korendowych E, McHugh N, FitzGerald O, Packham J, Morgan AW, Bruce IN, Barton A. Confirmation of TNIP1 and IL23A as susceptibility loci for psoriatic arthritis. Ann Rheum Dis 2011; 70:1641-4. [PMID: 21623003 PMCID: PMC3147229 DOI: 10.1136/ard.2011.150102] [Citation(s) in RCA: 97] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
OBJECTIVES To investigate a shared genetic aetiology for skin involvement in psoriasis and psoriatic arthritis (PsA) by genotyping single-nucleotide polymorphisms (SNPs), reported to be associated in genome-wide association studies of psoriasis, in patients with PsA. METHODS SNPs with reported evidence for association with psoriasis were genotyped in a PsA case and control collection from the UK and Ireland. Genotype and allele frequencies were compared between PsA cases and controls using the Armitage test for trend. RESULTS Seven SNPs mapping to the IL1RN, TNIP1, TNFAIP3, TSC1, IL23A, SMARCA4 and RNF114 genes were successfully genotyped. The IL23A and TNIP1 genes showed convincing evidence for association (rs2066808, p = 9.1×10(-7); rs17728338, p = 3.5×10(-5), respectively) whilst SNPs mapping to the TNFAIP3, TSC1 and RNF114 genes showed nominal evidence for association (rs610604, p = 0.03; rs1076160, p = 0.03; rs495337, p = 0.0025). No evidence for association with IL1RN or SMARCA4 was found but the power to detect association was low. CONCLUSIONS SNPs mapping to previously reported psoriasis loci show evidence for association to PSA, thus supporting the hypothesis that the genetic aetiology of skin involvement is the same in both PsA and psoriasis.
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Castillo-Gallego C, de Miguel Mendieta E, Garcia-Arias M, Plasencia-Rodriguez C, Lojo-Oliveira L, Martin-Mola E, Tillett W, Cavill C, Korendowych E, McHugh N, Coates L, Bhalla AK, Creamer P, Packham J, Hailwood S, Taylor G, Hamilton L, Brooksby A, Leeder J, Gaffney K, Malipeddi AS, Neame R, Francis J, Hassan W, Mease P, Olds M, Kary S, Kupper H, Bell C, Peffers G, Rees F, Lanyon P, Obrenovic K, Sandhu R, Packham J, Erb N, Coates LC, Conaghan P, Emery P, Green M, Ibrahim G, MakIver H, Helliwell P, Giles JL, McHugh K, DiGleria K, Shaw J, Kollnberger S, Maenaka K, Marroquin O, Renner C, Bowness P, Landewe R, Ritchlin C, Olds M, Guerette B, Lavie F, Kavanaugh A, McInnes I, Krueger GG, Gladman D, Zrubek J, Goldstein N, Xu S, Mudivarthy S, Mack M, Prevosto C, McDonald S, De Riva A, Goodman R, Key T, Hill Gaston JS, Deery MJ, Busch R, Fischer R, Wright C, Kessler B, Bowness P, Sheehy C, Jois RN, Leeder J, Kerrigan N, Mills KS, Somerville M, Scott DG, Gaffney K, Kavanaugh A, van der Heijde D, Chattopadhyay C, Gladman D, Mease P, McInnes I, Krueger GG, Xu W, Rahman MU, Zrubek J, Baratelle A, Beutler A, Stober CB, Benham HJ, Goodall JC, Hill Gaston JS, Sanyal K, Walker-Bone K, Coates LC, Conaghan P, Emery P, Green M, Ibrahim G, MakIver H, Helliwell PS, Vastesaeger N, Wang Y, Inman R, Deodhar A, Hsu B, Rahman MU, Dijkmans B, Braun J, Geusens P, Sieper J, van der Heijde D, El Miedany Y, Palmer D, McHugh K, Giles JL, Shaw J, Kollnberger S, Payeli S, Utriainen L, Milling S, Renner C, Bowness P. Spondylarthropathies (including psoriatic arthritis): 244. Validity of Colour Doppler and Spectral Doppler Ultrasound of Sacroilicac Joints Againts Physical Examination as Gold Standard. Rheumatology (Oxford) 2011. [DOI: 10.1093/rheumatology/ker034] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Bowes J, Eyre S, Flynn E, Ho P, Salah S, Warren RB, Marzo-Ortega H, Coates L, McManus R, Ryan AW, Kane D, Korendowych E, McHugh N, FitzGerald O, Packham J, Morgan AW, Griffiths CEM, Bruce IN, Worthington J, Barton A. Evidence to support IL-13 as a risk locus for psoriatic arthritis but not psoriasis vulgaris. Ann Rheum Dis 2011; 70:1016-9. [PMID: 21349879 PMCID: PMC3086035 DOI: 10.1136/ard.2010.143123] [Citation(s) in RCA: 56] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
Objective There is great interest in the identification of genetic factors that differentiate psoriatic arthritis (PsA) from psoriasis vulgaris (PsV), as such discoveries could lead to the identification of distinct underlying aetiological pathways. Recent studies identified single nucleotide polymorphisms (SNPs) in the interleukin 13 (IL-13) gene region as risk factors for PsV. Further investigations in one of these studies found the effect to be primarily restricted to PsA, thus suggesting the discovery of a specific genetic risk factor for PsA. Given this intriguing evidence, association to this gene was investigated in large collections of PsA and PsV patients and healthy controls. Methods Two SNPs (rs20541 and rs1800925) mapping to the IL-13 gene were genotyped in 1057 PsA and 778 type I PsV patients using the Sequenom genotyping platform. Genotype frequencies were compared to those of 5575 healthy controls. Additional analyses were performed in phenotypic subgroups of PsA (type I or II PsV and in those seronegative for rheumatoid factor). Results Both SNPs were found to be highly associated with susceptibility to PsA (rs1800925 ptrend = 6.1×10−5 OR 1.33, rs20541 ptrend = 8.0×10−4 OR 1.27), but neither SNP was significantly associated with susceptibility to PsV. Conclusions This study confirms that the effect of IL-13 risk locus is specific for PsA, thus highlighting a key biological pathway that differentiates PsA from PsV. The identification of markers that differentiate the two diseases raises the possibility in future of allowing screening of PsV patients to identify those at risk of developing PsA.
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Schuman B, Fisher SZ, Kovalevsky A, Borisova SN, Palcic MM, Coates L, Langan P, Evans SV. Preliminary joint neutron time-of-flight and X-ray crystallographic study of human ABO(H) blood group A glycosyltransferase. Acta Crystallogr Sect F Struct Biol Cryst Commun 2011; 67:258-62. [PMID: 21301100 PMCID: PMC3034622 DOI: 10.1107/s1744309110051298] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2010] [Accepted: 12/07/2010] [Indexed: 05/30/2023]
Abstract
The biosyntheses of oligosaccharides and glycoconjugates are conducted by glycosyltransferases. These extraordinarily diverse and widespread enzymes catalyze the formation of glycosidic bonds through the transfer of a monosaccharide from a donor molecule to an acceptor molecule, with the stereochemistry about the anomeric carbon being either inverted or retained. Human ABO(H) blood group A α-1,3-N-acetylgalactosaminyltransferase (GTA) generates the corresponding antigen by the transfer of N-acetylgalactosamine from UDP-GalNAc to the blood group H antigen. To understand better how specific active-site-residue protons and hydrogen-bonding patterns affect substrate recognition and catalysis, neutron diffraction studies were initiated at the Protein Crystallography Station (PCS) at Los Alamos Neutron Science Center (LANSCE). A large single crystal was subjected to H/D exchange prior to data collection and time-of-flight neutron diffraction data were collected to 2.5 Å resolution at the PCS to ∼85% overall completeness, with complementary X-ray diffraction data collected from a crystal from the same drop and extending to 1.85 Å resolution. Here, the first successful neutron data collection from a glycosyltransferase is reported.
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Hodgson RJ, Grainger AJ, O'Connor PJ, Evans R, Coates L, Marzo-Ortega H, Helliwell P, McGonagle D, Emery P, Robson MD. Imaging of the Achilles tendon in spondyloarthritis: a comparison of ultrasound and conventional, short and ultrashort echo time MRI with and without intravenous contrast. Eur Radiol 2010; 21:1144-52. [PMID: 21190022 DOI: 10.1007/s00330-010-2040-z] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2010] [Revised: 10/05/2010] [Accepted: 10/30/2010] [Indexed: 12/13/2022]
Abstract
OBJECTIVES To compare conventional MRI, ultrashort echo time MRI and ultrasound for assessing the extent of tendon abnormalities in spondyloarthritis. METHODS 25 patients with spondyloarthritis and Achilles symptoms were studied with MRI and ultrasound. MR images of the Achilles tendon were acquired using T1-weighted spin echo, gradient echo and ultrashort echo time (UTE) sequences with echo times (TE) between 0.07 and 16 ms, before and after intravenous contrast medium. Greyscale and power Doppler ultrasound were also performed. The craniocaudal extent of imaging abnormalities measured by a consultant musculoskeletal radiologist was compared between the different techniques. RESULTS Abnormalities were most extensive on spoiled gradient echo images with TE = 2 ms. Contrast enhancement after intravenous gadolinium was greatest on the UTE images (TE = 0.07 ms). Fewer abnormalities were demonstrated using unenhanced UTE. Abnormalities were more extensive on MRI than ultrasound. Contrast enhancement was more extensive than power Doppler signal. CONCLUSIONS 3D spoiled gradient echo images with an echo time of 2 ms demonstrate more extensive tendon abnormalities than the other techniques in spondyloarthritis. Abnormalities of vascularity are best demonstrated on enhanced ultrashort echo time images.
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Hussey RJ, Coates L, Gill RS, Wright JN, Sarwar M, Coker S, Erskine PT, Cooper JB, Wood S, Clarke IN, Lambden PR, Broadbridge R, Shoolingin-Jordan PM. Crystallization and preliminary X-ray diffraction analysis of the protease from Southampton norovirus complexed with a Michael acceptor inhibitor. Acta Crystallogr Sect F Struct Biol Cryst Commun 2010; 66:1544-8. [PMID: 21045318 PMCID: PMC3001671 DOI: 10.1107/s1744309110039059] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2010] [Accepted: 09/29/2010] [Indexed: 11/10/2022]
Abstract
Noroviruses are the predominant cause of human epidemic nonbacterial gastroenteritis. Viral replication requires a cysteine protease that cleaves a 200 kDa viral polyprotein into its constituent functional parts. Here, the crystallization of the recombinant protease from the Southampton norovirus is described. Whilst the native crystals were found to diffract only to medium resolution (2.9 Å), cocrystals of an inhibitor complex diffracted X-rays to 1.7 Å resolution. The polypeptide inhibitor (Ac-EFQLQ-propenyl ethyl ester) possesses an amino-acid sequence designed to match the substrate specificity of the enzyme, but was synthesized with a reactive Michael acceptor group at the C-terminal end.
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Bowes J, Flynn E, Ho P, Aly B, Morgan AW, Marzo-Ortega H, Coates L, McManus R, Ryan AW, Kane D, Korendowych E, McHugh N, FitzGerald O, Packham J, Bruce IN, Barton A. Variants in linkage disequilibrium with the late cornified envelope gene cluster deletion are associated with susceptibility to psoriatic arthritis. Ann Rheum Dis 2010; 69:2199-203. [PMID: 20643763 PMCID: PMC3002763 DOI: 10.1136/ard.2010.130575] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
OBJECTIVE A common deletion mapping to the psoriasis susceptibility locus 4 on chromosome 1q21, encompassing two genes of the late cornified envelope (LCE) gene cluster, has been associated with an increased risk of psoriasis vulgaris (PsV). One previous report found no association of the deletion with psoriatic arthritis (PsA), suggesting it may be a specific risk factor for PsV. Given the genetic overlap between PsA and PsV, a study was undertaken to investigate whether single nucleotide polymorphisms (SNPs) mapping to this locus are risk factors for PsA in a UK and Irish population. METHODS Three SNPs with prior evidence of association with susceptibility to PsV were genotyped in 1057 patients with PsA using Sequenom iPlex chemistry and genotype frequencies compared with data available for 5575 healthy controls. Two of the SNPs, rs4112788 and rs4085613, were reported to be highly correlated with the LCE deletion. The third SNP, rs6701216, was previously reported to be associated with PsV in a US population. RESULTS Alleles tagging the deletion for both rs4112788 and rs4085613 were found to be enriched in cases compared with controls (69% vs 65%) and significantly associated with increased susceptibility to PsA (p(trend) = 0.001, OR 1.19 and p(trend) = 0.001, OR 1.18, respectively). No association was observed with rs6701216. CONCLUSIONS The evidence presented here supports LCE deletion as a risk factor for PsA in a UK and Irish population. It suggests that this locus is a risk factor within a shared aetiological pathway that contributes to psoriatic skin disease in both PsV and PsA.
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Coates L, Stoica AD, Hoffmann C, Richards J, Cooper R. The macromolecular neutron diffractometer (MaNDi) at the Spallation Neutron Source, Oak Ridge: enhanced optics design, high-resolution neutron detectors and simulated diffraction. J Appl Crystallogr 2010. [DOI: 10.1107/s0021889810008587] [Citation(s) in RCA: 55] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
The macromolecular neutron diffractometer MaNDi is currently under construction at the first target station of the Spallation Neutron Source at Oak Ridge National Laboratory. This instrument will collect neutron diffraction data from small single crystals (0.1–1 mm3) with lattice constants between 100 and 300 Å, as well as data from less well ordered systems such as fibers. A focusing neutron guide has been designed to filter the high-energy neutron component of the spectrum and to provide a narrow beam with a wide spectral window and angular divergence almost insensitive to neutron wavelength. The system includes a final interchangeable section of neutron guide and two slits, which enable tuning of the horizontal and vertical beam divergence between 0.12 and 0.80° (full width at half-maximum) at the sample position. This allows the trading of intensity for resolution, depending on the scientific requirements. Efforts to enhance and develop suitable high-resolution neutron detectors at an affordable price are also discussed. Finally, the parameters of the neutron guide and detectors were used to simulate diffraction from a large unit cell.
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Cuthbert R, Goeb V, Horner EA, Churchman S, Coates L, Marzo-Ortega H, Nam J, Villeneuve E, Vital E, Conaghan PG, Fardellone P, Le Loet X, Emery P, Vittecoq O, Ponchel F. Reduced interleukin 7 serum titres are associated with progression towards rheumatoid arthritis in very early inflammatory arthritis. Ann Rheum Dis 2010. [DOI: 10.1136/ard.2010.129668i] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Teixeira SCM, Ankner J, Bellissent-Funel MC, Bewley R, Blakeley MP, Coates L, Dahint R, Dalgliesh R, Dencher N, Dhont J, Fischer P, Forsyth VT, Fragneto G, Frick B, Geue T, Gilles R, Gutberlet T, Haertlein M, Hauß T, Häußler W, Heller WT, Herwig K, Holderer O, Juranyi F, Kampmann R, Knott R, Kohlbrecher J, Kreuger S, Langan P, Lechner R, Lynn G, Majkrzak C, May R, Meilleur F, Mo Y, Mortensen K, Myles DAA, Natali F, Neylon C, Niimura N, Ollivier J, Ostermann A, Peters J, Pieper J, Rühm A, Schwahn D, Shibata K, Soper AK, Straessle T, Suzuki UI, Tanaka I, Tehei M, Timmins P, Torikai N, Unruh T, Urban V, Vavrin R, Weiss K, Zaccai G. New sources and instrumentation for neutrons in biology. Chem Phys 2009; 345:133-151. [PMID: 19132140 PMCID: PMC2614686 DOI: 10.1016/j.chemphys.2008.02.030] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
Neutron radiation offers significant advantages for the study of biological molecular structure and dynamics. A broad and significant effort towards instrumental and methodological development to facilitate biology experiments at neutron sources worldwide is reviewed.
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Jarrett SJ, Sivera F, Cawkwell LS, Marzo-Ortega H, McGonagle D, Hensor E, Coates L, O’Connor PJ, Fraser A, Conaghan PG, Emery P. MRI and clinical findings in patients with ankylosing spondylitis eligible for anti-tumour necrosis factor therapy after a short course of etoricoxib. Ann Rheum Dis 2008; 68:1466-9. [DOI: 10.1136/ard.2008.092213] [Citation(s) in RCA: 62] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
Objective:To describe and assess the response to short-term etoricoxib as shown by MRI and clinical variables in patients with ankylosing spondylitis (AS) selected for eligibility for anti-tumour necrosis factor therapy.Methods:In a 6-week open-label study, 22 patients with AS and eligible for biological therapy were treated with 90 mg of etoricoxib daily. Clinical and laboratory parameters were obtained and MRI of the sacroiliac joints and the lower thoracic and lumbar spine performed at baseline and at week 6. The primary end point was the proportion of patients fulfilling the SpondyloArthritis international Society (ASAS) response criteria for biological therapies (ASASBIO) while secondary end points included the change in MRI-determined bone lesions.Results:Eight of 20 completers improved enough to meet the ASASBIO response criteria and most clinical variables improved significantly. Fifteen patients had a total of 63 MRI-detectable lesions; overall, 13/60 lesions with paired scans either resolved completely or improved, while five lesions worsened or appeared during treatment.Conclusion:Etoricoxib is an effective symptomatic treatment for patients with AS; however, its effect on MRI-detected lesions is small. Further studies are needed to determine the effect of etoricoxib on MRI-determined bone oedema.
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Glusker J, Langan P, Kovalevsky A, Katz A, Carrell H, Hanson L, Mustyakimov M, Fisher S, Coates L, Schoenborn B, Bunick G. Locating hydrogen atoms in enzymes: a neutron structure of D-xylose isomerase with bound D-xylulose. Acta Crystallogr A 2008. [DOI: 10.1107/s010876730809675x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Teixeira S, Zaccai G, Ankner J, Bellissent-Funel M, Bewley R, Blakeley M, Callow P, Coates L, Dahint R, Dalgliesh R, Dencher N, Forsyth V, Fragneto G, Frick B, Gilles R, Gutberlet T, Haertlein M, Hauß T, Häußler W, Heller W, Herwig K, Holderer O, Juranyi F, Kampmann R, Knott R, Krueger S, Langan P, Lechner R, Lynn G, Majkrzak C, May R, Meilleur F, Mo Y, Mortensen K, Myles D, Natali F, Neylon C, Niimura N, Ollivier J, Ostermann A, Peters J, Pieper J, Rühm A, Schwahn D, Shibata K, Soper A, Strässle T, Suzuki J, Tanaka I, Tehei M, Timmins P, Torikai N, Unruh T, Urban V, Vavrin R, Weiss K. Erratum to “New sources and instrumentation for neutrons in biology” [Chem. Phys. 345 (2008) 133–151]. Chem Phys 2008. [DOI: 10.1016/j.chemphys.2008.04.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Coates L, Beaven G, Erskine PT, Beale SI, Wood SP, Shoolingin-Jordan PM, Cooper JB. Structure ofChlorobium vibrioforme5-aminolaevulinic acid dehydratase complexed with a diacid inhibitor. ACTA CRYSTALLOGRAPHICA SECTION D: BIOLOGICAL CRYSTALLOGRAPHY 2005; 61:1594-8. [PMID: 16304458 DOI: 10.1107/s0907444905030350] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/01/2005] [Accepted: 09/22/2005] [Indexed: 11/10/2022]
Abstract
The structure of Chlorobium vibrioforme 5-aminolaevulinic acid dehydratase (ALAD) complexed with the irreversible inhibitor 4,7-dioxosebacic acid has been solved. The inhibitor binds by forming Schiff-base linkages with lysines 200 and 253 at the active site. The structure reported here provides a definition of the interactions made by both of the substrate molecules (A-side and P-side substrates) with the C. vibrioforme ALAD and is compared and contrasted with structures of the same inhibitor bound to Escherichia coli and yeast ALAD. The structure suggests why 4,7-dioxosebacic acid is a better inhibitor of the zinc-dependent ALADs than of the zinc-independent ALADs.
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Erskine PT, Coates L, Newbold R, Brindley AA, Stauffer F, Beaven GDE, Gill R, Coker A, Wood SP, Warren MJ, Shoolingin-Jordan PM, Neier R, Cooper JB. Structure of yeast 5-aminolaevulinic acid dehydratase complexed with the inhibitor 5-hydroxylaevulinic acid. ACTA CRYSTALLOGRAPHICA SECTION D: BIOLOGICAL CRYSTALLOGRAPHY 2005; 61:1222-6. [PMID: 16131755 DOI: 10.1107/s0907444905018834] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/21/2004] [Accepted: 06/13/2005] [Indexed: 11/11/2022]
Abstract
The X-ray structure of the enzyme 5-aminolaevulinic acid dehydratase (ALAD) from yeast complexed with the competitive inhibitor 5-hydroxylaevulinic acid has been determined at a resolution of 1.9 A. The structure shows that the inhibitor is bound by a Schiff-base link to one of the invariant active-site lysine residues (Lys263). The inhibitor appears to bind in two well defined conformations and the interactions made by it suggest that it is a very close analogue of the substrate 5-aminolaevulinic acid (ALA).
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Williams PA, Coates L, Mohammed F, Gill R, Erskine PT, Coker A, Wood SP, Anthony C, Cooper JB. The atomic resolution structure of methanol dehydrogenase fromMethylobacterium extorquens. ACTA CRYSTALLOGRAPHICA SECTION D: BIOLOGICAL CRYSTALLOGRAPHY 2004; 61:75-9. [PMID: 15608378 DOI: 10.1107/s0907444904026964] [Citation(s) in RCA: 61] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/01/2004] [Accepted: 10/23/2004] [Indexed: 11/11/2022]
Abstract
The crystal structure of methanol dehydrogenase (MDH) from Methylobacterium extorquens has been refined without stereochemical restraints at a resolution of 1.2 A. The high-resolution data have defined the conformation of the tricyclic pyrroloquinoline quinone (PQQ) cofactor ring as entirely planar. The detailed definition of the active-site geometry has shown many features that are similar to the quinohaemo-protein alcohol dehydrogenases from Comamonas testosteroni and Pseudomonas putida, both of which possess MDH-like and cytochrome c-like domains. Conserved features between the two types of PQQ-containing enzyme suggest a common pathway for electron transfer between MDH and its physiological electron acceptor cytochrome cL. A pathway for proton transfer from the active site to the bulk solvent is also suggested.
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Coates L, Myles DAA. Prospects for atomic resolution and neutron crystallography in drug design. Curr Drug Targets 2004; 5:173-8. [PMID: 15011950 DOI: 10.2174/1389450043490613] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The number of protein crystal structures being refined to atomic resolution is increasing each year as well as the size of proteins being studied. There are currently 346 structures in the protein data bank which have been refined to or beyond atomic resolution. The benefits of atomic resolution X-ray data are discussed along with a number of structural examples of biomedically relevant proteins. The complementary role of neutron diffraction will also be discussed.
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Coates L, Erskine PT, Mall S, Williams PA, Gill RS, Wood SP, Cooper JB. The structure of endothiapepsin complexed with the gem-diol inhibitor PD-135,040 at 1.37 A. ACTA CRYSTALLOGRAPHICA SECTION D: BIOLOGICAL CRYSTALLOGRAPHY 2003; 59:978-81. [PMID: 12777758 DOI: 10.1107/s0907444903006267] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/10/2002] [Accepted: 03/18/2003] [Indexed: 11/10/2022]
Abstract
The crystal structure of endothiapepsin complexed with the gem-diol inhibitor PD-135,040 has been anisotropically refined to a resolution of 1.37 A. The structure of this inhibitor complex is in agreement with previous structures of endothiapepsin gem-diol inhibitor complexes that have been used to develop proposed catalytic mechanisms. However, the increase in resolution over previous structures confirms the presence of a number of short hydrogen bonds within the active site that are likely to play an important role in the catalytic mechanism. The presence of low-barrier hydrogen bonds was indicated in a previous one-dimensional H NMR spectrum.
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91
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Glazebrook C, Hollis C, Heussler H, Goodman R, Coates L. Detecting emotional and behavioural problems in paediatric clinics. Child Care Health Dev 2003; 29:141-9. [PMID: 12603359 DOI: 10.1046/j.1365-2214.2003.00324.x] [Citation(s) in RCA: 118] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
BACKGROUND Children with chronic illness have increased rates of mental health problems and psychological difficulties often present as physical conditions. This prevalence survey aims to determine whether children attending general paediatric out-patient clinics are at increased risk of suffering from emotional and behavioural disturbance and whether there is an unmet need for psychiatric liaison to paediatric clinics. METHODS Participants were 307 children aged 5-15 years attending a representative sample of paediatric out-patient clinics in one UK hospital. A national community sample of 10,438 children aged 5-15 years was used as a comparison group. Parental ratings of child behaviour were obtained using the Strengths and Difficulties Questionnaire (SDQ). Doctors rated the extent of any emotional difficulties using a modification of the SDQ 'impact supplement'. RESULTS Children attending paediatric out-patient clinics were more than twice as likely (OR = 2.3, 95% CI 1.7-3.1) to score in the abnormal range of the SDQ. Of the 60 (20%) children with a probable psychiatric disorder only 15 had received specialist help from Child Mental Health Services. There were no gender differences in the profile of difficulties with emotional symptoms being particularly evident in both boys (OR = 2.85, 95% CI 1.97-4.11) and girls (OR = 3.04, 95% CI 1.92-4.70). The risk of psychiatric disorder was highest among those children with brain disorders attending neurological clinics (OR = 5.8, 95% CI 2.5-11.3). Clinicians only identified emotional or behaviour problems in a quarter of those children with parent-rated disorder. CONCLUSION There is an increased prevalence of emotional and behavioural disturbance in children attending paediatric out-patient clinics. The SDQ could be added to routine paediatric assessments to aid appropriate referral of children with a possible psychiatric disorder to child mental health services.
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Erskine PT, Coates L, Wood SP, Shoolingin-Jordan PM, Newbold R, Brindley AA, Warren MJ, Stauffer F, Neier R, Cooper JB. The X-ray structure of yeast 5-aminolaevulinic acid dehydratase (ALAD) complexed with substrate and inhibitors. Acta Crystallogr A 2002. [DOI: 10.1107/s0108767302088980] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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93
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Coates L, Erskine PT, Wood SP, Myles DAA, Cooper JB. Neutron Laue and atomic resolution X-ray studies of endothiapepsin: implications for the aspartic proteinase mechanism. Acta Crystallogr A 2002. [DOI: 10.1107/s010876730208892x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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94
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Kessaris N, Coates L, Boyle NH. Conservative management of appendix mass in children (Br J Surg 2001; 88: 1539-42). Letter 2. Br J Surg 2002; 89:809. [PMID: 12028003 DOI: 10.1046/j.1365-2168.2002.02127_5.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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95
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Coates L, Erskine PT, Crump MP, Wood SP, Cooper JB. Five atomic resolution structures of endothiapepsin inhibitor complexes: implications for the aspartic proteinase mechanism. J Mol Biol 2002; 318:1405-15. [PMID: 12083527 DOI: 10.1016/s0022-2836(02)00197-3] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
Endothiapepsin is derived from the fungus Endothia parasitica and is a member of the aspartic proteinase class of enzymes. This class of enzyme is comprised of two structurally similar lobes, each lobe contributing an aspartic acid residue to form a catalytic dyad that acts to cleave the substrate peptide bond. The three-dimensional structures of endothiapepsin bound to five transition state analogue inhibitors (H189, H256, CP-80,794, PD-129,541 and PD-130,328) have been solved at atomic resolution allowing full anisotropic modelling of each complex. The active sites of the five structures have been studied with a view to studying the catalytic mechanism of the aspartic proteinases by locating the active site protons by carboxyl bond length differences and electron density analysis. In the CP-80,794 structure there is excellent electron density for the hydrogen on the inhibitory statine hydroxyl group which forms a hydrogen bond with the inner oxygen of Asp32. The location of this proton has implications for the catalytic mechanism of the aspartic proteinases as it is consistent with the proposed mechanism in which Asp32 is the negatively charged aspartate. A number of short hydrogen bonds (approximately 2.6 A) with ESD values of around 0.01 A that may have a role in catalysis have been identified within the active site of each structure; the lengths of these bonds have been confirmed using NMR techniques. The possibility and implications of low barrier hydrogen bonds in the active site are considered.
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Coates L, Erskine PT, Wood SP, Myles DA, Cooper JB. A neutron Laue diffraction study of endothiapepsin: implications for the aspartic proteinase mechanism. Biochemistry 2001; 40:13149-57. [PMID: 11683623 DOI: 10.1021/bi010626h] [Citation(s) in RCA: 79] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Current proposals for the catalytic mechanism of aspartic proteinases are largely based on X-ray structures of bound oligopeptide inhibitors possessing nonhydrolyzable analogues of the scissile peptide bond. However, the positions of protons on the catalytic aspartates and the ligand in these complexes have not been determined with certainty. Thus, our objective was to locate crucial protons at the active site of an inhibitor complex since this will have major implications for a detailed understanding of the mechanism of action. We have demonstrated that high-resolution neutron diffraction data can be collected from crystals of the fungal aspartic proteinase endothiapepsin bound to a transition state analogue (H261). The neutron structure of the complex has been refined at a resolution of 2.1 A to an R-factor of 23.5% and an R(free) of 27.4%. This work represents the largest protein structure studied to date by neutron crystallography at high resolution. The neutron data demonstrate that 49% of the main chain nitrogens have exchanged their hydrogen atoms with D2O in the mother liquor. The majority of residues resisting exchange are buried within core beta-sheet regions of the molecule. The neutron maps confirm that the protein has a number of buried ionized carboxylate groups which are likely to give the molecule a net negative charge even at very low pH, thereby accounting for its low pI. The functional groups at the catalytic center have clearly undergone H-D exchange despite being buried by the inhibitor occupying the active site cleft. Most importantly, the data provide convincing evidence that Asp 215 is protonated and that Asp 32 is the negatively charged residue in the transition state complex. This has an important bearing on mechanistic proposals for this class of proteinase.
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Harper A, Coates L. Role of thrombolysis in resuscitation. Lancet 2001; 358:1371; author reply 1371-2. [PMID: 11684254 DOI: 10.1016/s0140-6736(01)06436-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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98
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Erskine PT, Coates L, Newbold R, Brindley AA, Stauffer F, Wood SP, Warren MJ, Cooper JB, Shoolingin-Jordan PM, Neier R. The X-ray structure of yeast 5-aminolaevulinic acid dehydratase complexed with two diacid inhibitors. FEBS Lett 2001; 503:196-200. [PMID: 11513881 DOI: 10.1016/s0014-5793(01)02721-1] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
The structures of 5-aminolaevulinic acid dehydratase complexed with two irreversible inhibitors (4-oxosebacic acid and 4,7-dioxosebacic acid) have been solved at high resolution. Both inhibitors bind by forming a Schiff base link with Lys 263 at the active site. Previous inhibitor binding studies have defined the interactions made by only one of the two substrate moieties (P-side substrate) which bind to the enzyme during catalysis. The structures reported here provide an improved definition of the interactions made by both of the substrate molecules (A- and P-side substrates). The most intriguing result is the novel finding that 4,7-dioxosebacic acid forms a second Schiff base with the enzyme involving Lys 210. It has been known for many years that P-side substrate forms a Schiff base (with Lys 263) but until now there has been no evidence that binding of A-side substrate involves formation of a Schiff base with the enzyme. A catalytic mechanism involving substrate linked to the enzyme through Schiff bases at both the A- and P-sites is proposed.
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Abstract
A collaborative theory of narrative story-telling was tested in two experiments that examined what listeners do and their effect on the narrator. In 63 unacquainted dyads (81 women and 45 men), a narrator told his or her own close-call story. The listeners made 2 different kinds of listener responses: Generic responses included nodding and vocalizations such as "mhm." Specific responses, such as wincing or exclaiming, were tightly connected to (and served to illustrate) what the narrator was saying at the moment. In experimental conditions that distracted listeners from the narrative content, listeners made fewer responses, especially specific ones, and the narrators also told their stories significantly less well, particularly at what should have been the dramatic ending. Thus, listeners were co-narrators both through their own specific responses, which helped illustrate the story, and in their apparent effect on the narrator's performance. The results demonstrate the importance of moment-by-moment collaboration in face-to-face dialogue.
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Zainuri, Joyce DC, Wearing H, Coates L, Terry L. Effects of phosphonate and salicylic acid treatments on anthracnose disease development and ripening of 'Kensington Pride' mango fruit. ACTA ACUST UNITED AC 2001. [DOI: 10.1071/ea99104] [Citation(s) in RCA: 42] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
This study investigated treatment of mango
(Mangifera indica L.) fruit with 2 host
defence-promoting compounds for suppression of anthracnose disease
(Colletotrichum gloeosporioides). Cultivar
‘Kensington Pride’ fruit were treated at concentrations of up to
1000 mg/L with either potassium phosphonate or salicylic acid.
Applications were by various combinations of pre- and postharvest dips and
vacuum infiltration. Postharvest treatments at up to 2000 mg/L salicylic
acid were evaluated in a second fruiting season. Fruit were either
uninoculated or inoculated with the fungal pathogen. Colour, firmness and
disease-severity were assessed during shelf life at 23°C. There were
no significant (P>0.05) effects of potassium
phosphonate or salicylic acid on anthracnose disease severity in the first
season. Moreover, phosphonate or salicylic acid treatment did not
significantly affect fruit colour or firmness changes. There were significant
(P<0.05) reductions in anthracnose severity in
the second season, especially at the highest concentration of 2000 mg/L
salicylic acid. Mango fruit skin colour and firmness changes were also slowed
down significantly (P<0.05). These effects of
salicylic acid were attributed to inhibition of mango fruit skin ripening
(senescence).
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