76
|
Krekel D, Samsun R, Pasel J, Peters R. Strategien für den optimierten Betrieb von Brennstoffzellensystemen als Hilfsstromaggregate. CHEM-ING-TECH 2014. [DOI: 10.1002/cite.201450101] [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]
|
77
|
Krupp C, Prawitz M, Samsun R, Peters R, Stolten D. CFD-unterstützte Optimierung des Startvorgangs eines Brenngaserzeugungspackages für die Bordstromversorgung. CHEM-ING-TECH 2014. [DOI: 10.1002/cite.201450391] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
|
78
|
McCue J, Osborne D, Dumont J, Peters R, Mei B, Pierce GF, Kobayashi K, Euwart D. Validation of the manufacturing process used to produce long-acting recombinant factor IX Fc fusion protein. Haemophilia 2014; 20:e327-35. [PMID: 24811361 PMCID: PMC4282370 DOI: 10.1111/hae.12451] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/27/2014] [Indexed: 11/28/2022]
Abstract
Recombinant factor IX Fc (rFIXFc) fusion protein is the first of a new class of bioengineered long-acting factors approved for the treatment and prevention of bleeding episodes in haemophilia B. The aim of this work was to describe the manufacturing process for rFIXFc, to assess product quality and to evaluate the capacity of the process to remove impurities and viruses. This manufacturing process utilized a transferable and scalable platform approach established for therapeutic antibody manufacturing and adapted for production of the rFIXFc molecule. rFIXFc was produced using a process free of human- and animal-derived raw materials and a host cell line derived from human embryonic kidney (HEK) 293H cells. The process employed multi-step purification and viral clearance processing, including use of a protein A affinity capture chromatography step, which binds to the Fc portion of the rFIXFc molecule with high affinity and specificity, and a 15 nm pore size virus removal nanofilter. Process validation studies were performed to evaluate identity, purity, activity and safety. The manufacturing process produced rFIXFc with consistent product quality and high purity. Impurity clearance validation studies demonstrated robust and reproducible removal of process-related impurities and adventitious viruses. The rFIXFc manufacturing process produces a highly pure product, free of non-human glycan structures. Validation studies demonstrate that this product is produced with consistent quality and purity. In addition, the scalability and transferability of this process are key attributes to ensure consistent and continuous supply of rFIXFc.
Collapse
|
79
|
Startz T, Nguyen K, Peters R, Nankervis B, Jones M, Kilian R, Frank N, Vang B, Hill D. Maturation of dendritic cells from CD14+ monocytes in an automated functionally closed hollow fiber bioreactor system. Cytotherapy 2014. [DOI: 10.1016/j.jcyt.2014.01.093] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
|
80
|
Peters R, Dharmage S, Gurrin L, Koplin J, Ponsonby AL, Lowe A, Tang ML, Tey D, Hill D, Robinson M, Czech H, Thiele L, Osborne N, Allen KJ. The Natural History and Clinical Predictors Of Egg Allergy In The First 2 Years Of Life: A Prospective, Population-Based, Cohort Study. J Allergy Clin Immunol 2014. [DOI: 10.1016/j.jaci.2013.12.596] [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]
|
81
|
Tey D, Allen KJ, Peters R, Koplin J, Tang ML, Gurrin L, Ponsonby AL, Lowe A, Wake M, Dharmage S. Population Response To Change In Infant Feeding Guidelines For Allergy Prevention. J Allergy Clin Immunol 2014. [DOI: 10.1016/j.jaci.2013.12.1019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
|
82
|
Held K, Peters R, Toschi A. Poor man's understanding of kinks originating from strong electronic correlations. PHYSICAL REVIEW LETTERS 2013; 110:246402. [PMID: 25165943 DOI: 10.1103/physrevlett.110.246402] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/25/2013] [Indexed: 06/03/2023]
Abstract
By means of dynamical mean field theory calculations, it was recently discovered that kinks generically arise in strongly correlated systems, even in the absence of external bosonic degrees of freedoms such as phonons. However, the physical mechanism behind these kinks remained unclear. On the basis of the perturbative and numerical renormalization group theory, we herewith identify these kinks as the effective Kondo energy scale of the interacting lattice system which is shown to be smaller than the width of the central peak.
Collapse
|
83
|
Haemers K, Peters R, Braak S, Wesseling F. Necrotising fasciitis of the thigh. BMJ Case Rep 2013; 2013:bcr-2013-009331. [PMID: 23771967 DOI: 10.1136/bcr-2013-009331] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
Abstract
Necrotising fasciitis (NF) is an extremely virulent form of infectious fasciitis. It affects skin, subcutaneous fat and superficial and deep muscular fascia by rapidly progressive necrosis. Expeditious diagnosis and radical debridement is necessary to prevent the onset of sepsis, multisystem organ failure and possible death. Perforated rectal cancer resulting in NF can spread to the perineum and genitals known as Fournier gangrene. This case describes an unusual case of NF of the right thigh as first presentation highly suggestive for rectal cancer.
Collapse
|
84
|
Petrochko NG, Ash JM, Choate MM, Spott J, Peters R. The preparation of electrophilic and electroneutral phosphane ligands and their substitution chemistry with Mo(CO)6. Inorganica Chim Acta 2013. [DOI: 10.1016/j.ica.2013.03.035] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
|
85
|
Morrill K, May K, Leek D, Langland N, Jeane LD, Ventura J, Skubisz C, Scherer S, Lopez E, Crocker E, Peters R, Oertle J, Nguyen K, Just S, Orian M, Humphrey M, Payne D, Jacobs B, Waters R, Langland J. Spectrum of Antimicrobial Activity Associated with Ionic Colloidal Silver. J Altern Complement Med 2013; 19:224-31. [DOI: 10.1089/acm.2011.0681] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
|
86
|
Peters R, Gurrin L, Dharmage S, Tang M, Koplin J, Danchin M, Hiscock H, Allen K. Food allergy and anaphylaxis – 2053. New diagnostic algorithms that will reduce the need for oral food challenges. World Allergy Organ J 2013. [PMCID: PMC3643411 DOI: 10.1186/1939-4551-6-s1-p136] [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
|
87
|
Boyde M, Peters R, Weglowski M, Ha T, Korczyk D. Evaluation of Unplanned Hospital Readmissions for Chronic Heart Failure. Heart Lung Circ 2013. [DOI: 10.1016/j.hlc.2013.05.182] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
|
88
|
Linsinger TPJ, Chaudhry Q, Dehalu V, Delahaut P, Dudkiewicz A, Grombe R, von der Kammer F, Larsen EH, Legros S, Loeschner K, Peters R, Ramsch R, Roebben G, Tiede K, Weigel S. Validation of methods for the detection and quantification of engineered nanoparticles in food. Food Chem 2012; 138:1959-66. [PMID: 23411331 DOI: 10.1016/j.foodchem.2012.11.074] [Citation(s) in RCA: 76] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2012] [Revised: 10/29/2012] [Accepted: 11/12/2012] [Indexed: 11/25/2022]
Abstract
The potential impact of nanomaterials on the environment and on human health has already triggered legislation requiring labelling of products containing nanoparticles. However, so far, no validated analytical methods for the implementation of this legislation exist. This paper outlines a generic approach for the validation of methods for detection and quantification of nanoparticles in food samples. It proposes validation of identity, selectivity, precision, working range, limit of detection and robustness, bearing in mind that each "result" must include information about the chemical identity, particle size and mass or particle number concentration. This has an impact on testing for selectivity and trueness, which also must take these aspects into consideration. Selectivity must not only be tested against matrix constituents and other nanoparticles, but it shall also be tested whether the methods apply equally well to particles of different suppliers. In trueness testing, information whether the particle size distribution has changed during analysis is required. Results are largely expected to follow normal distributions due to the expected high number of particles. An approach of estimating measurement uncertainties from the validation data is given.
Collapse
|
89
|
Peters R, Beck L, Fifita L, Hui B, Tui`one V, Page C, Sur R, Tanjasiri S. P04.79. Navigating breast and cervical cancer screening services for Tongan women in Southern California. Altern Ther Health Med 2012. [PMCID: PMC3373854 DOI: 10.1186/1472-6882-12-s1-p349] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/02/2022]
|
90
|
Mutsaers JH, Peters R, Pool-Goudzwaard A, Koes B, Verhagen A. Psychometric properties of the Pain Attitudes and Beliefs Scale for Physiotherapists: A systematic review. ACTA ACUST UNITED AC 2012; 17:213-8. [DOI: 10.1016/j.math.2011.12.010] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2011] [Revised: 11/28/2011] [Accepted: 12/19/2011] [Indexed: 10/14/2022]
|
91
|
Ollivett TL, Divers TJ, Cushing T, Priest H, Dawson DR, Peters R, Stokol T. Acute pancreatitis in two five-day-old Appaloosa foals. Equine Vet J 2012:96-9. [PMID: 22594035 DOI: 10.1111/j.2042-3306.2011.00435.x] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Severe acute pancreatitis (SAP) in foals is rare and treatment has not been documented. This paper describes the clinical, haematological and ultrasonographic findings as well as attempted treatment of SAP in two 5-day-old Appaloosa fillies. Clinical signs, including colic, diarrhoea and coma, may be mistaken for sepsis or neonatal encephalopathy. Hyperlipaemic serum and peritoneal fluid, and elevated serum and peritoneal fluid amylase and lipase activities aided the diagnosis. Severe acute pancreatitis should be included as a differential in an acutely ill foal with diarrhoea, colic, cerebral cortica dysfunction and hyperlipaemia.
Collapse
|
92
|
Peters R, Podger M, Fulbrook P. Developing Standards for Specialist Heart Failure Nurses: A Delphi Study. Heart Lung Circ 2012. [DOI: 10.1016/j.hlc.2012.05.697] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
|
93
|
Jacobs H, Koek GH, Peters R, Moalin M, Tack J, van der Vijgh WJ, Bast A, Haenen GR. Differences in Pharmacological Activities of the Antioxidant Flavonoid MonoHER in Humans and Mice Are Caused by Variations in Its Metabolic Profile. Clin Pharmacol Ther 2011; 90:852-9. [DOI: 10.1038/clpt.2011.200] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
|
94
|
Ueki I, Roman HB, Valli A, Fieselmann K, Lam J, Peters R, Hirschberger LL, Stipanuk MH. Knockout of the murine cysteine dioxygenase gene results in severe impairment in ability to synthesize taurine and an increased catabolism of cysteine to hydrogen sulfide. Am J Physiol Endocrinol Metab 2011; 301:E668-84. [PMID: 21693692 PMCID: PMC3191547 DOI: 10.1152/ajpendo.00151.2011] [Citation(s) in RCA: 88] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Cysteine homeostasis is dependent on the regulation of cysteine dioxygenase (CDO) in response to changes in sulfur amino acid intake. CDO oxidizes cysteine to cysteinesulfinate, which is further metabolized to either taurine or to pyruvate plus sulfate. To gain insight into the physiological function of CDO and the consequence of a loss of CDO activity, mice carrying a null CDO allele (CDO(+/-) mice) were crossed to generate CDO(-/-), CDO(+/-), and CDO(+/+) mice. CDO(-/-) mice exhibited postnatal mortality, growth deficit, and connective tissue pathology. CDO(-/-) mice had extremely low taurine levels and somewhat elevated cysteine levels, consistent with the lack of flux through CDO-dependent catabolic pathways. However, plasma sulfate levels were slightly higher in CDO(-/-) mice than in CDO(+/-) or CDO(+/+) mice, and tissue levels of acid-labile sulfide were elevated, indicating an increase in cysteine catabolism by cysteine desulfhydration pathways. Null mice had lower hepatic cytochrome c oxidase levels, suggesting impaired electron transport capacity. Supplementation of mice with taurine improved survival of male pups but otherwise had little effect on the phenotype of the CDO(-/-) mice. H(2)S has been identified as an important gaseous signaling molecule as well as a toxicant, and pathology may be due to dysregulation of H(2)S production. Control of cysteine levels by regulation of CDO may be necessary to maintain low H(2)S/sulfane sulfur levels and facilitate the use of H(2)S as a signaling molecule.
Collapse
|
95
|
Zielińska AJ, Noordermeer JWM, Talma AG, Peters R, Van Duin M. CROSS-LINKING OF SATURATED ELASTOMERS WITH DI-AZIDES. PART II: MECHANISTIC STUDY. RUBBER CHEMISTRY AND TECHNOLOGY 2011. [DOI: 10.5254/1.3577546] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Abstract
In the first part, one di-sulfonyl azide: 1,3BDSA, and two di-azidoformates: GDAF and 4,4′DAF, were selected and extensively investigated as curing agents for EP(D)M rubbers. Although the mechanical properties of the vulcanizates vary significantly with the particular di-azide used, all of them act as effective curing agents compared to a peroxide/coagent curing system. To explain the differences in properties as well as to obtain a deeper understanding of the reaction mechanism, model compound experiments are performed with 4-methylheptane as substitute for the saturated ethylene–propylene copolymer rubber backbone. Using gas chromatography/mass spectrometry and high performance liquid chromatography/mass spectrometry as analytical tools, a basic understanding of the reaction mechanisms between sulfonyl azide and azidoformate functionalities and saturated hydrocarbons is obtained.
Collapse
|
96
|
Stipanuk MH, Ueki I, Roman HB, Valli A, Fieselmann K, Lam J, Peters R, Hirschberger LL. Knockout of the murine cysteine dioxygenase gene results in severe impairment in ability to synthesize taurine and an increased catabolism of cysteine to hydrogen sulfide. FASEB J 2011. [DOI: 10.1096/fasebj.25.1_supplement.912.2] [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]
|
97
|
|
98
|
Bulpitt CJ, Beckett NS, Peters R, Leonetti G, Gergova V, Fagard R, Burch LA, Banya W, Fletcher AE. Blood pressure control in the Hypertension in the Very Elderly Trial (HYVET). J Hum Hypertens 2011; 26:157-63. [PMID: 21390056 DOI: 10.1038/jhh.2011.10] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
To report blood pressure control in the Hypertension in the Very Elderly Trial, a placebo-controlled trial of hypertensive (systolic blood pressure (SBP) 160-199 mm Hg, diastolic blood pressure (DBP) <110 mm Hg) participants over the age of 80 years, given treatment in three steps: indapamide slow release 1.5 mg alone, indapamide plus 2 mg perindopril and indapamide plus 4 mg perindopril. The difference in control between participants with combined systolic and diastolic hypertension (SDH, DBP90 mm Hg) and those with isolated systolic hypertension (ISH, DBP<90 mm Hg) is determined together with the effects of increments in the treatment regimen. At 2 years, the active treatment lowered blood pressure by 16.5/6.9 mm Hg more than that on placebo in participants with SDH and by 19.3/4.8 mm Hg more in those with ISH. The 2-year falls in pressure on placebo alone were 13.2/8.5 mm Hg in SDH and 8.2/1.5 mm Hg in ISH participants. With full titration of active treatment, 62% of SDH participants achieved goal SBP (<150 mm Hg) by 2 years and 71% of those with ISH. The corresponding results for DBP control (<80 mm Hg) were 40 and 78%. The addition of active perindopril 2 mg roughly doubled the percentage controlled, as did increasing to 4 from 2 mg. Blood pressure control was good with ISH and better than with SDH. The fall in SBP accounted for the observed 30% reduction in strokes, but the 21% reduction in total mortality and 64% reduction in heart failure were greater than predicted.
Collapse
|
99
|
Bodensiek O, Zitko R, Peters R, Pruschke T. Low-energy properties of the Kondo lattice model. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2011; 23:094212. [PMID: 21339565 DOI: 10.1088/0953-8984/23/9/094212] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
We study the zero-temperature properties of the Kondo lattice model within the dynamical mean-field theory. As an impurity solver we use the numerical renormalization group. We present results for the paramagnetic case showing the anticipated heavy-fermion physics, including direct evidence for the appearance of a large Fermi surface for antiferromagnetic exchange interaction. Allowing for the formation of a Néel state, we observe at finite doping an antiferromagnetic metal below a critical exchange interaction, which shows a crossover from a local moment antiferromagnet with a small Fermi surface for weak exchange coupling to a heavy-fermion antiferromagnet with a large Fermi surface for increasing exchange. Including lattice degrees of freedom via an additional Holstein term we observe a significant suppression of the Kondo effect, leading to a strongly reduced low-energy scale. For too large electron-phonon coupling we find a complete collapse of the heavy Fermi liquid and the formation of polarons.
Collapse
|
100
|
Bikker A, van der Wurff-Jacobs K, Kruize A, Peters R, Bijlsma J, Lafeber F, van Roon J. IL-7-activated T cells and monocytes drive B cell activation in patients with primary Sjogren's syndrome. Ann Rheum Dis 2011. [DOI: 10.1136/ard.2010.149005.14] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
|