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Campanilho-Marques R, Almeida B, Arnold K, Nistala K, Pilkington CA, Wedderburn LR. Comparison of the utility and validity of three scoring tools to detect skin disease in patients with juvenile dermatomyositis. Pediatr Rheumatol Online J 2014. [PMCID: PMC4184362 DOI: 10.1186/1546-0096-12-s1-p93] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
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Yasin SA, Arnold K, Sag E, Tansley S, Moraitis E, Jacques TS, Holton JL, Owens C, McHugh N, Pilkington C, Wedderburn LR. Sub-phenotyping of juvenile dermatomyositis: can it assist clinical decisions? Pediatr Rheumatol Online J 2014. [PMCID: PMC4184136 DOI: 10.1186/1546-0096-12-s1-o18] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Piper C, Bending D, Varsani H, Arnold K, Wedderburn L, Mauri C, Nistala K. Regulatory B cell Il-10 production is diminished in juvenile dermatomyositis. Pediatr Rheumatol Online J 2014. [PMCID: PMC4184342 DOI: 10.1186/1546-0096-12-s1-p86] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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Mikkelsen T, deCarvalho AC, Arnold K, Mueller C, Petricoin EF, Poisson LM, Irtenkauf S, Hasselbach L. CABOZANTINIB IS EFFECTIVE IN A SUBSET OF XENOGRAFT GBM TUMORS AND AFFECTS MULTIPLE SIGNALING PATHWAYS. Neuro Oncol 2014. [DOI: 10.1093/neuonc/nou208.58] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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McCann LJ, Arnold K, Pilkington CA, Huber AM, Ravelli A, Beard L, Beresford MW, Wedderburn LR. Developing a provisional, international minimal dataset for Juvenile Dermatomyositis: for use in clinical practice to inform research. Pediatr Rheumatol Online J 2014; 12:31. [PMID: 25075205 PMCID: PMC4113599 DOI: 10.1186/1546-0096-12-31] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/12/2014] [Accepted: 07/08/2014] [Indexed: 01/25/2023] Open
Abstract
BACKGROUND Juvenile dermatomyositis (JDM) is a rare but severe autoimmune inflammatory myositis of childhood. International collaboration is essential in order to undertake clinical trials, understand the disease and improve long-term outcome. The aim of this study was to propose from existing collaborative initiatives a preliminary minimal dataset for JDM. This will form the basis of the future development of an international consensus-approved minimum core dataset to be used both in clinical care and inform research, allowing integration of data between centres. METHODS A working group of internationally-representative JDM experts was formed to develop a provisional minimal dataset. Clinical and laboratory variables contained within current national and international collaborative databases of patients with idiopathic inflammatory myopathies were scrutinised. Judgements were informed by published literature and a more detailed analysis of the Juvenile Dermatomyositis Cohort Biomarker Study and Repository, UK and Ireland. RESULTS A provisional minimal JDM dataset has been produced, with an associated glossary of definitions. The provisional minimal dataset will request information at time of patient diagnosis and during on-going prospective follow up. At time of patient diagnosis, information will be requested on patient demographics, diagnostic criteria and treatments given prior to diagnosis. During on-going prospective follow-up, variables will include the presence of active muscle or skin disease, major organ involvement or constitutional symptoms, investigations, treatment, physician global assessments and patient reported outcome measures. CONCLUSIONS An internationally agreed minimal dataset has the potential to significantly enhance collaboration, allow effective communication between groups, provide a minimal standard of care and enable analysis of the largest possible number of JDM patients to provide a greater understanding of this disease. This preliminary dataset can now be developed into a consensus-approved minimum core dataset and tested in a wider setting with the aim of achieving international agreement.
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Ade PAR, Akiba Y, Anthony AE, Arnold K, Atlas M, Barron D, Boettger D, Borrill J, Chapman S, Chinone Y, Dobbs M, Elleflot T, Errard J, Fabbian G, Feng C, Flanigan D, Gilbert A, Grainger W, Halverson NW, Hasegawa M, Hattori K, Hazumi M, Holzapfel WL, Hori Y, Howard J, Hyland P, Inoue Y, Jaehnig GC, Jaffe A, Keating B, Kermish Z, Keskitalo R, Kisner T, Le Jeune M, Lee AT, Linder E, Leitch EM, Lungu M, Matsuda F, Matsumura T, Meng X, Miller NJ, Morii H, Moyerman S, Myers MJ, Navaroli M, Nishino H, Paar H, Peloton J, Quealy E, Rebeiz G, Reichardt CL, Richards PL, Ross C, Schanning I, Schenck DE, Sherwin B, Shimizu A, Shimmin C, Shimon M, Siritanasak P, Smecher G, Spieler H, Stebor N, Steinbach B, Stompor R, Suzuki A, Takakura S, Tomaru T, Wilson B, Yadav A, Zahn O. Measurement of the cosmic microwave background polarization lensing power spectrum with the POLARBEAR experiment. PHYSICAL REVIEW LETTERS 2014; 113:021301. [PMID: 25062161 DOI: 10.1103/physrevlett.113.021301] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/11/2014] [Indexed: 06/03/2023]
Abstract
Gravitational lensing due to the large-scale distribution of matter in the cosmos distorts the primordial cosmic microwave background (CMB) and thereby induces new, small-scale B-mode polarization. This signal carries detailed information about the distribution of all the gravitating matter between the observer and CMB last scattering surface. We report the first direct evidence for polarization lensing based on purely CMB information, from using the four-point correlations of even- and odd-parity E- and B-mode polarization mapped over ∼30 square degrees of the sky measured by the POLARBEAR experiment. These data were analyzed using a blind analysis framework and checked for spurious systematic contamination using null tests and simulations. Evidence for the signal of polarization lensing and lensing B modes is found at 4.2σ (stat+sys) significance. The amplitude of matter fluctuations is measured with a precision of 27%, and is found to be consistent with the Lambda cold dark matter cosmological model. This measurement demonstrates a new technique, capable of mapping all gravitating matter in the Universe, sensitive to the sum of neutrino masses, and essential for cleaning the lensing B-mode signal in searches for primordial gravitational waves.
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Tansley SL, Betteridge ZE, Gunawardena H, Jacques TS, Owens CM, Pilkington C, Arnold K, Yasin S, Moraitis E, Wedderburn LR, McHugh NJ. Anti-MDA5 autoantibodies in juvenile dermatomyositis identify a distinct clinical phenotype: a prospective cohort study. Arthritis Res Ther 2014; 16:R138. [PMID: 24989778 PMCID: PMC4227127 DOI: 10.1186/ar4600] [Citation(s) in RCA: 124] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2013] [Accepted: 06/24/2014] [Indexed: 12/20/2022] Open
Abstract
INTRODUCTION The aim of this study was to define the frequency and associated clinical phenotype of anti-MDA5 autoantibodies in a large UK based, predominantly Caucasian, cohort of patients with juvenile dermatomyositis (JDM). METHODS Serum samples and clinical data were obtained from 285 patients with JDM recruited to the UK Juvenile Dermatomyositis Cohort and Biomarker Study. The presence of anti-MDA5 antibodies was determined by immunoprecipitation and confirmed by ELISA using recombinant MDA5 protein. Results were compared with matched clinical data, muscle biopsies (scored by an experienced paediatric neuropathologist) and chest imaging (reviewed by an experienced paediatric radiologist). RESULTS Anti-MDA5 antibodies were identified in 7.4% of JDM patients and were associated with a distinct clinical phenotype including skin ulceration (P = 0.03) oral ulceration (P = 0.01), arthritis (P <0.01) and milder muscle disease both clinically (as determined by Childhood Myositis Assessment Score (P = 0.03)) and histologically (as determined by a lower JDM muscle biopsy score (P <0.01)) than patients who did not have anti-MDA5 antibodies. A greater proportion of children with anti-MDA5 autoantibodies achieved disease inactivity at two years post-diagnosis according to PRINTO criteria (P = 0.02). A total of 4 out of 21 children with anti-MDA5 had interstitial lung disease; none had rapidly progressive interstitial lung disease. CONCLUSIONS Anti-MDA5 antibodies can be identified in a small but significant proportion of patients with JDM and identify a distinctive clinical sub-group. Screening for anti-MDA5 autoantibodies at diagnosis would be useful to guide further investigation for lung disease, inform on prognosis and potentially confirm the diagnosis, as subtle biopsy changes could otherwise be missed.
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Tansley SL, Betteridge ZE, Shaddick G, Gunawardena H, Arnold K, Wedderburn LR, McHugh NJ. Calcinosis in juvenile dermatomyositis is influenced by both anti-NXP2 autoantibody status and age at disease onset. Rheumatology (Oxford) 2014; 53:2204-8. [PMID: 24987158 PMCID: PMC4241891 DOI: 10.1093/rheumatology/keu259] [Citation(s) in RCA: 107] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
OBJECTIVE Calcinosis is a major cause of morbidity in JDM and has previously been linked to anti-NXP2 autoantibodies, younger age at disease onset and more persistent disease activity. This study aimed to investigate the clinical associations of anti-NXP2 autoantibodies in patients with JDM stratified by age at disease onset. METHODS A total of 285 patients with samples and clinical data were recruited via the UK Juvenile Dermatomyositis Cohort and Biomarker Study. The presence of anti-NXP2 was determined by both immunoprecipitation and ELISA. Logistic regression analysis was performed to assess the age-dependent relationship between anti-NXP2 and the development of calcinosis and disease activity measures. RESULTS We identified anti-NXP2 autoantibodies in 56 patients (20%). While in all patients younger age at disease onset was associated with an increased risk of calcinosis and this relationship was nearly linear, anti-NXP2 autoantibodies substantially increased the risk of calcinosis across all ages (P = 0.025) and were detectable prior to calcinosis development. Children with anti-NXP2 autoantibodies had a greater degree of weakness (median lowest ever Childhood Myositis Assessment Score 29.6 vs 42) and were less likely to be in remission at 2 years post-diagnosis. No difference in disease activity was seen 4 years post-diagnosis. CONCLUSION Children diagnosed at a young age have a high risk of calcinosis regardless of autoantibody status. However, the presence of anti-NXP2 autoantibodies substantially increases the risk of calcinosis across all ages and is associated with disease severity.
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Ade PAR, Akiba Y, Anthony AE, Arnold K, Atlas M, Barron D, Boettger D, Borrill J, Borys C, Chapman S, Chinone Y, Dobbs M, Elleflot T, Errard J, Fabbian G, Feng C, Flanigan D, Gilbert A, Grainger W, Halverson NW, Hasegawa M, Hattori K, Hazumi M, Holzapfel WL, Hori Y, Howard J, Hyland P, Inoue Y, Jaehnig GC, Jaffe A, Keating B, Kermish Z, Keskitalo R, Kisner T, Le Jeune M, Lee AT, Leitch EM, Linder E, Lungu M, Matsuda F, Matsumura T, Meng X, Miller NJ, Morii H, Moyerman S, Myers MJ, Navaroli M, Nishino H, Paar H, Peloton J, Poletti D, Quealy E, Rebeiz G, Reichardt CL, Richards PL, Ross C, Rotermund K, Schanning I, Schenck DE, Sherwin BD, Shimizu A, Shimmin C, Shimon M, Siritanasak P, Smecher G, Spieler H, Stebor N, Steinbach B, Stompor R, Suzuki A, Takakura S, Tikhomirov A, Tomaru T, Wilson B, Yadav A, Zahn O. Evidence for gravitational lensing of the cosmic microwave background polarization from cross-correlation with the cosmic infrared background. PHYSICAL REVIEW LETTERS 2014; 112:131302. [PMID: 24745402 DOI: 10.1103/physrevlett.112.131302] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/26/2013] [Indexed: 06/03/2023]
Abstract
We reconstruct the gravitational lensing convergence signal from cosmic microwave background (CMB) polarization data taken by the Polarbear experiment and cross-correlate it with cosmic infrared background maps from the Herschel satellite. From the cross spectra, we obtain evidence for gravitational lensing of the CMB polarization at a statistical significance of 4.0σ and indication of the presence of a lensing B-mode signal at a significance of 2.3σ. We demonstrate that our results are not biased by instrumental and astrophysical systematic errors by performing null tests, checks with simulated and real data, and analytical calculations. This measurement of polarization lensing, made via the robust cross-correlation channel, not only reinforces POLARBEAR auto-correlation measurements, but also represents one of the early steps towards establishing CMB polarization lensing as a powerful new probe of cosmology and astrophysics.
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Tansley SL, Gunawardena H, Betteridge ZE, Arnold K, Shaddick G, Wedderburn LR, McHugh NJ. O57. Autoantibody in Juvenile Dermatomyositis Reflects Disease Activity: Results of a Pilot Study. Rheumatology (Oxford) 2014. [DOI: 10.1093/rheumatology/keu095.003] [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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Moraitis E, Tansley S, Arnold K, Betteridge ZE, Gunawardena H, Jacques TS, Owens C, Wedderburn LR, Mchugh N. PReS-FINAL-2130: Antibodies to MDA5 correlate with a distinct phenotype in children with juvenile dermatomyositis, including higher risk of lung involvement and ulcerative skin disease. Pediatr Rheumatol Online J 2013. [PMCID: PMC4044063 DOI: 10.1186/1546-0096-11-s2-p142] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Piper C, Varsani H, Arnold K, Wedderburn L, Mauri C, Nistala K. PReS-FINAL-1020: Dysregulation of the peripheral blood D cell compartment is associated with disease activity in juvenile dermatomyositis. Pediatr Rheumatol Online J 2013. [PMCID: PMC4042384 DOI: 10.1186/1546-0096-11-s2-o3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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Riedel-Heller SG, Gühne U, Weinmann S, Arnold K, Ay ES, Becker T. [Psychosocial interventions in severe mental illness: evidence and recommendations: psychoeducation, social skill training and exercise]. DER NERVENARZT 2012; 83:847-54. [PMID: 22729513 DOI: 10.1007/s00115-011-3471-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Abstract
This paper summarizes the results of a systematic literature search on three widely used psychosocial interventions for people with severe mental illness: psychoeducation for patients and relatives, social skill training and physical exercise. Based on this evidence, recommendations given in the S3 guidelines on psychosocial therapies in severe mental illness of the German Society for Psychiatry, Psychotherapy and Neurology (DGPPN) will be reported. Areas of future research are identified.
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Gühne U, Weinmann S, Arnold K, Ay ES, Becker T, Riedel-Heller S. [Arts therapies in severe mental illness: are they effective?]. DER NERVENARZT 2012; 83:855-60. [PMID: 22733379 DOI: 10.1007/s00115-011-3472-7] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
Arts therapies are widely used treatment strategies for people with severe mental illness. Generally, only a few randomized trials are available, however, the studies show that additional use of arts therapies reduces the appearance of negative symptoms among people with schizophrenia. The most significant evidence can be seen with music therapy. The treatment of severe depression has shown that additional music therapy improves depression. The S3 guidelines on psychosocial therapies in severe mental illness of the Germany Society for Psychiatry, Psychotherapy and Neurology (DGPPN) recommended arts therapies are with recommendation level B.
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Lim D, Todd M, Kourtoglou N, Gerasimidis K, Gardner-Medwin J, Watson L, Tullus K, Pilkington C, Chesters C, Marks SD, Newland P, Jones C, Beresford MW, O'Neill P, Lee H, Tattersall R, McErlane F, Beresford M, Baildam E, Alice Chieng SE, Davidson J, Foster H, Gardner-Medwin J, Lunt M, Wedderburn LR, Thomson W, Hyrich KL, Kavirayani A, Thyagarajan MS, Ellis J, Helen Strike CNS, Ramanan AV, Coda A, Davidson J, Fowlie P, Walsh J, Carline T, Santos D, Brimlow KW, Rangaraj S, Grant C, Little J, Helen Strike CNS, Hinchcliffe A, Dick A, Ramanan A, Ekdawy D, Nagra G, Camina N, Edgerton J, Choi J, Lamb K, Hawley D, Rangaraj S, Cruikshank M, Sen E, Pain C, Leone V, Cruikshank M, Walsh J, Tattersall R, Hawley D, Dunkley L, Lee H, McMahon AM, Bale P, Armon K, Amin T, Wood M, Davies R, Southwood TR, Kearsley-Fleet L, Hyrich KL, Kearsley-Fleet L, Baildam E, Beresford M, Davies R, Foster HE, Mowbray K, Southwood TR, Thomson W, Hyrich KL, Agarwal M, Kavirayani A, Ramanan AV, Ellis J, Smith E, Gray W, Taylor-Robinson D, Foster HE, Beresford MW, Morgan T, Watson L, Beresford MW, Gohar F, Watson L, Beresford MW, Artim-Esen B, Radziszewska A, Pericleous C, Rahman A, Giles I, Ioannou Y, Jashek D, Mosley E, Rangaraj S, Moraitis E, Arnold K, Pilkington C, Russell NJ, Roderick M, Ramanan A, Roderick M, Russell N, Ramanan AV, Smith NSM, Wilson N, Gardner-Medwin J, Sen E, Chan M, Hardy E, Rapley T, Hensman P, Wraith JE, Foster H, Clarkson J, Gardner-Medwin J, Choudhery V, McVitty C, Davidson J, Hughes DH, Martin N, Warrier K, Sen E, Abinun M, Jandial S, O'Leary D, Staunton D, Lowry C, McSweeney N, Sen E, Abinun M, Friswell M, Foster H, Walsh A, Lowry C, Raja A. BSPAR ANNUAL CONFERENCE ABSTRACTS * Oral presentations * O1. The impact of modern management on outcomes of JIA compared with healthy controls. Rheumatology (Oxford) 2012. [DOI: 10.1093/rheumatology/ket116] [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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Lim D, Todd M, Kourtoglou N, Gerasimidis K, Gardner-Medwin J, Watson L, Tullus K, Pilkington C, Chesters C, Marks SD, Newland P, Jones C, Beresford MW, O'Neill P, Lee H, Tattersall R, McErlane F, Beresford M, Baildam E, Alice Chieng SE, Davidson J, Foster H, Gardner-Medwin J, Lunt M, Wedderburn LR, Thomson W, Hyrich KL, Kavirayani A, Thyagarajan MS, Ellis J, Helen Strike CNS, Ramanan AV, Coda A, Davidson J, Fowlie P, Walsh J, Carline T, Santos D, Brimlow KW, Rangaraj S, Grant C, Little J, Helen Strike CNS, Hinchcliffe A, Dick A, Ramanan A, Ekdawy D, Nagra G, Camina N, Edgerton J, Choi J, Lamb K, Hawley D, Rangaraj S, Cruikshank M, Sen E, Pain C, Leone V, Cruikshank M, Walsh J, Tattersall R, Hawley D, Dunkley L, Lee H, McMahon AM, Bale P, Armon K, Amin T, Wood M, Davies R, Southwood TR, Kearsley-Fleet L, Hyrich KL, Kearsley-Fleet L, Baildam E, Beresford M, Davies R, Foster HE, Mowbray K, Southwood TR, Thomson W, Hyrich KL, Agarwal M, Kavirayani A, Ramanan AV, Ellis J, Smith E, Gray W, Taylor-Robinson D, Foster HE, Beresford MW, Morgan T, Watson L, Beresford MW, Gohar F, Watson L, Beresford MW, Artim-Esen B, Radziszewska A, Pericleous C, Rahman A, Giles I, Ioannou Y, Jashek D, Mosley E, Rangaraj S, Moraitis E, Arnold K, Pilkington C, Russell NJ, Roderick M, Ramanan A, Roderick M, Russell N, Ramanan AV, Smith NSM, Wilson N, Gardner-Medwin J, Sen E, Chan M, Hardy E, Rapley T, Hensman P, Wraith JE, Foster H, Clarkson J, Gardner-Medwin J, Choudhery V, McVitty C, Davidson J, Hughes DH, Martin N, Warrier K, Sen E, Abinun M, Jandial S, O'Leary D, Staunton D, Lowry C, McSweeney N, Sen E, Abinun M, Friswell M, Foster H, Walsh A, Lowry C, Raja A. BSPAR ANNUAL CONFERENCE ABSTRACTS * Oral presentations * O1. The impact of modern management on outcomes of JIA compared with healthy controls. Rheumatology (Oxford) 2012. [DOI: 10.1093/rheumatology/kes277] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Limberger K, Arnold K, Borutta A. Entwicklung der allgemeinen und Mundgesundheit bei Erfurter Vorschulkindern. DAS GESUNDHEITSWESEN 2012. [DOI: 10.1055/s-0032-1307334] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Westbrook J, Gabanyi M, Tao YP, Shah R, Micallef D, McLaughlin W, Schwede T, Arnold K, Bordoli L, Adams P, Minor W, Berman H. The Structural Biology Knowledgebase – structures, functions, methods and more. Acta Crystallogr A 2011. [DOI: 10.1107/s0108767311085953] [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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Arnold K, Dienst C, Lechtenböhmer S. Integrierte Treibhausgasbewertung der Prozessketten von Erdgas und industriellem Biomethan in Deutschland. ACTA ACUST UNITED AC 2010. [DOI: 10.1007/s12302-010-0125-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Abernethy G, Otter D, Arnold K, Austad J, Christiansen S, Ferreira I, Irvine F, Marsh C, Massom LR, Otter D, Pearce K, Stevens J, Szpylka J, Vyas P, Woollard D, Wu C. Determination of immunoglobulin G in bovine colostrum and milk powders, and in dietary supplements of bovine origin by protein G affinity liquid chromatography: collaborative study. J AOAC Int 2010; 93:622-627. [PMID: 20480910] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
An AOAC collaborative study was conducted to evaluate an affinity LC procedure for measuring immunoglobulin G (IgG) in selected dairy powders. The powders were extracted with 0.15 M sodium chloride solution and the pH was adjusted to 4.6 to precipitate caseins, which would otherwise lead to an overestimation of IgG. The analyte was then bound to a commercially available Protein G affinity cartridge and selectively eluted with a glycine buffer at pH 2.5. Detection was at 280 nm and quantification was made against a calibration curve prepared from bovine serum IgG. The samples analyzed included the likely matrixes for which this assay will find commercial use, namely, high- and low-protein-content colostrum powders, tablets containing colostrum powder, and some IgG-containing dairy powders; milk protein isolate, whey protein concentrate, and skim milk powder. Eleven laboratories provided data for the study and assayed blind duplicates of six materials. The repeatability RSD values ranged from 2.1 to 4.2% and the reproducibility RSD values ranged from 6.4 to 18.5%. The Protein G method with casein removal has adequate reproducibility for measuring IgG in colostrum-derived powders that are traded on the basis of IgG content as a colostral marker.
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Arnold K. Changing gear: transitions in substance misuse. JOURNAL OF SUBSTANCE USE 2009. [DOI: 10.3109/14659890009053049] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Bailey CW, Asman S, Schammel C, Schisler N, Arnold K, Thompson L, Schammel D, Blackhurst D, McKinley BP, Trocha SD. Treatment disparities in women ≥70 years old with breast cancer. J Clin Oncol 2008. [DOI: 10.1200/jco.2008.26.15_suppl.9545] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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Cohen AL, Shuler C, McAllister S, Fosheim GE, Brown MG, Abercrombie D, Anderson K, McDougal LK, Drenzek C, Arnold K, Jernigan D, Gorwitz R. Methamphetamine use and methicillin-resistant Staphylococcus aureus skin infections. Emerg Infect Dis 2008; 13:1707-13. [PMID: 18217555 PMCID: PMC3375784 DOI: 10.3201/eid1311.070148] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
Methicillin-resistant Staphylococcus aureus (MRSA) infections and methamphetamine use are emerging public health problems. We conducted a case-control investigation to determine risk factors for MRSA skin and soft tissue infections (SSTIs) in residents of a largely rural southeastern community in the United States. Case-patients were persons >12 years old who had culturable SSTIs; controls had no SSTIs. Of 119 SSTIs identified, 81 (68.1%) were caused by MRSA. Methamphetamine use was reported in 9.9% of case-patients and 1.8% of controls. After we adjusted for age, sex, and race, patients with MRSA SSTIs were more likely than controls to have recently used methamphetamine (odds ratio 5.10, 95% confidence interval 1.55-16.79). MRSA caused most SSTIs in this population. Transmission of MRSA may be occurring among methamphetamine users in this community.
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Jovtchev S, Stoeff S, Arnold K, Zschörnig O. Studies on the aggregation behaviour of pegylated human red blood cells with the Zeta sedimentation technique. Clin Hemorheol Microcirc 2008. [DOI: 10.3233/ch-2008-1085] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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