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Schrappe M, Möricke A, Reiter A, Henze G, Welte K, Gadner H, Ludwig WD, Ritter J, Harbott J, Mann G, Klingebiel T, Gruhn B, Niemeyer C, Kremens B, Niggli F, Debatin KM, Ratei R, Stanulla M, Beier R, Cario G, Schrauder A, Zimmermann M. Key treatment questions in childhood acute lymphoblastic leukemia: results in 5 consecutive trials performed by the ALL-BFM study group from 1981 to 2000. KLINISCHE PADIATRIE 2013; 225 Suppl 1:S62-72. [PMID: 23700060 DOI: 10.1055/s-0033-1337966] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
Between 1981 and 2000, 6 609 children (<18 years of age) were treated in 5 consecutive trials of the Berlin-Frankfurt-Münster (BFM) study group for childhood acute lymphoblastic leukemia (ALL). Patients were treated in up to 82 centers in Germany, Austria, and Switzerland. Probability of 10-year event-free survival (survival) improved from 65% (77%) in study ALL-BFM 81-78% (85%) in ALL-BFM 95. In parallel to relapse reduction, major efforts focused on reducing acute and late toxicity through advanced risk adaptation of treatment. The major findings derived from these ALL-BFM trials were as follows: 1) preventive cranial radiotherapy could be safely reduced to 12 Gy in T-ALL and high-risk ALL patients and eliminated in non-high-risk non-T-ALL patients, if it was replaced by high-dose and intrathecal methotrexate; 2) omission of delayed reintensification severely impaired outcome of low-risk patients; 3) 6 months less maintenance therapy caused an increase in systemic relapses; 4) slow response to an initial 7-day prednisone window was identified as adverse prognostic factor; 5) condensed induction therapy resulted in a significant improvement of outcome; 6) the daunorubicin dose in induction could be safely reduced in low-risk patients; 7) intensification of consolidation/reintensification treatment led to considerable improvement of outcome in high-risk patients.
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Ritter J, Kurzai M, Mentzel HJ, Guntinas-Lichius O. Unklare Lippenschwellung und Gingivahyperplasie bei einem 11-jährigen Jungen. Laryngorhinootologie 2013; 92:341-3. [DOI: 10.1055/s-0033-1337924] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Schoen J, Sharbati S, Ritter J, Jewgenow K. Feline Gonads Exhibit Tissue Specific Alternative Splicing of Oestrogen Receptor Alpha (ESR1). Reprod Domest Anim 2012; 47 Suppl 6:30-4. [DOI: 10.1111/rda.12065] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2012] [Accepted: 07/19/2012] [Indexed: 11/29/2022]
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Ritter J. Non-Hodgkin-Lymphome bei Kindern und Jugendlichen. Monatsschr Kinderheilkd 2012. [DOI: 10.1007/s00112-012-2818-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Friemelt G, Ritter J. [Which services do companies need to retain employability in their workforce?--help offered by the German Pension Insurance]. REHABILITATION 2012; 51:24-30. [PMID: 22311395 DOI: 10.1055/s-0031-1299762] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
Abstract
German Pension Insurance as a provider of services in rehabilitation has reacted to demographic changes in society, both strategic and practical. The implementation of services for companies including support of company return to work management and prevention services for employees with specific health-related burdens offer the chance to identify an endangerment of earning capacity at an early stage. Workplace-orientated medical rehabilitation increases the focus on the job and the workplace in rehabilitation under the pension insurance scheme, both in selecting the right service for a client as well as in the service itself. Employers, employees and pension insurance together benefit from close cooperation.
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Pikin A, Alessi J, Beebe E, Kponou A, Okamura M, Raparia D, Ritter J, Tan Y, Kuznetsov G. Ion optics of RHIC electron beam ion source. THE REVIEW OF SCIENTIFIC INSTRUMENTS 2012; 83:02A504. [PMID: 22380200 DOI: 10.1063/1.3666915] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
RHIC electron beam ion source has been commissioned to operate as a versatile ion source on RHIC injection facility supplying ion species from He to Au for Booster. Except for light gaseous elements RHIC EBIS employs ion injection from several external primary ion sources. With electrostatic optics fast switching from one ion species to another can be done on a pulse to pulse mode. The design of an ion optical structure and the results of simulations for different ion species are presented. In the choice of optical elements special attention was paid to spherical aberrations for high-current space charge dominated ion beams. The combination of a gridded lens and a magnet lens in LEBT provides flexibility of optical control for a wide range of ion species to satisfy acceptance parameters of RFQ. The results of ion transmission measurements are presented.
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Ruhnke M, Böhme A, Buchheidt D, Cornely O, Donhuijsen K, Einsele H, Enzensberger R, Hebart H, Heussel CP, Horger M, Hof H, Karthaus M, Krüger W, Maschmeyer G, Penack O, Ritter J, Schwartz S. Diagnosis of invasive fungal infections in hematology and oncology--guidelines from the Infectious Diseases Working Party in Haematology and Oncology of the German Society for Haematology and Oncology (AGIHO). Ann Oncol 2011; 23:823-33. [PMID: 21948809 DOI: 10.1093/annonc/mdr407] [Citation(s) in RCA: 80] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Invasive fungal infections (IFIs) are a primary cause of morbidity and mortality in patients with hematological malignancies. Establishing a definite diagnosis of IFI in immunocompromised patients is particularly challenging and time consuming, but delayed initiation of antifungal treatment increases mortality. The limited overall outcome has led to the strategy of initiating either 'empirical' or 'preemptive' antifungal therapy before the final diagnosis. However, diagnostic procedures have been vastly improved in recent years. Particularly noteworthy is the introduction of newer imaging techniques and non-culture methods, including antigen-based assays, metabolite detection and molecular detection of fungal DNA from body fluid samples. Though varying widely in cancer patients, the risk of IFI is highest in those with allogeneic stem cell transplantation and those with acute leukemia. The AGIHO presents recommendations for the diagnosis of IFIs with risk-adapted screening concepts for febrile episodes in patients with haemato-oncological disorders.
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Ritter J. Schmerztherapie in der pädiatrischen Hämatologie und Onkologie. Monatsschr Kinderheilkd 2011. [DOI: 10.1007/s00112-011-2417-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Ritter J. The Etiology of Acute Childhood Leukemias. KLINISCHE PADIATRIE 2010. [DOI: 10.1055/s-0030-1270320] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Alessi JG, Barton D, Beebe E, Bellavia S, Gould O, Kponou A, Lambiase R, Lockey R, McNerney A, Mapes M, Marneris Y, Okamura M, Phillips D, Pikin AI, Raparia D, Ritter J, Snydstrup L, Theisen C, Wilinski M. The Brookhaven National Laboratory electron beam ion source for RHIC. THE REVIEW OF SCIENTIFIC INSTRUMENTS 2010; 81:02A509. [PMID: 20192364 DOI: 10.1063/1.3292937] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
As part of a new heavy ion preinjector that will supply beams for the Relativistic Heavy Ion Collider and the National Aeronautics and Space Administration Space Radiation Laboratory, construction of a new electron beam ion source (EBIS) is now being completed. This source, based on the successful prototype Brookhaven National Laboratory Test EBIS, is designed to produce milliampere level currents of all ion species, with q/m=(1/6)-(1/2). Among the major components of this source are a 5 T, 2-m-long, 204 mm diameter warm bore superconducting solenoid, an electron gun designed to operate at a nominal current of 10 A, and an electron collector designed to dissipate approximately 300 kW of peak power. Careful attention has been paid to the design of the vacuum system, since a pressure of 10(-10) Torr is required in the trap region. The source includes several differential pumping stages, the trap can be baked to 400 C, and there are non-evaporable getter strips in the trap region. Power supplies include a 15 A, 15 kV electron collector power supply, and fast switchable power supplies for most of the 16 electrodes used for varying the trap potential distribution for ion injection, confinement, and extraction. The EBIS source and all EBIS power supplies sit on an isolated platform, which is pulsed up to a maximum of 100 kV during ion extraction. The EBIS is now fully assembled, and operation will be beginning following final vacuum and power supply tests. Details of the EBIS components are presented.
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Barlet V, Croisé R, Maniez-Montreuil M, Descamps F, Plantier J, Lemée V, André P, Ritter J, Seignères B, Cusin S. PVI-16 Performance evaluation of VIDIA® HBs AG, a new automated immunoassay test for the qualitative detection of HBs antigen in human serum and plasma samples. J Clin Virol 2009. [DOI: 10.1016/s1386-6532(09)70165-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Ritter J, Gerhardt HJ, Marx I. Licht- Und Elektronenmikroskopische Befunde Am Nervus Vestibularis Und Ganglion Scarpae Beim Morbus Menière. Acta Otolaryngol 2009. [DOI: 10.3109/00016488109133265] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Ritter J, Behrbohm H, Gerhardt HJ. Quantitative Befunde Zur Morphologie Des Nervus Vestibularis Beim Morbus Menière. Acta Otolaryngol 2009. [DOI: 10.3109/00016488109133277] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Van de Moortele PF, Auerbach EJ, Ugurbil K, Ritter J. T2-weighted fMRI with Multiple Area B1 Shimming in the Visual and Motor Cortizes of the Human Brain at Ultra-High Field. Neuroimage 2009. [DOI: 10.1016/s1053-8119(09)72208-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
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Ritter J, Auerbach E, Lenglet C, Ugurbil K. A New Sequence for DTI with a Slab-Wise Diffusion Preparation, Reduced SAR and Increased Acquisition Speed. Neuroimage 2009. [DOI: 10.1016/s1053-8119(09)70469-0] [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] Open
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Vormoor J, Ritter J, Jürgens H, Dick J. Significance of the SCID Mouse Models for the Study of Normal and Leukemic Human Hemopoiesis and Gene Therapy. Oncol Res Treat 2009. [DOI: 10.1159/000218632] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Zimmermann M, Schellong G, Creutzig U, Ritter J. Superior Results by Cranial Irradiation in Children with Acute Myelogenous Leukemia: An Update of Study AML-BFM-87. Oncol Res Treat 2009. [DOI: 10.1159/000218384] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Voirin N, Routy JP, Smith D, Baratin D, Trépo C, Cotte L, Touraine JL, Livrozet JM, Cooper DA, Ritter J, André P, Vanhems P. Effect of early initiation of highly active antiretroviral therapy on CD4 cell count and HIV-RNA viral load trends within 24 months of the onset of acute retroviral syndrome. HIV Med 2009; 9:440-4. [PMID: 18705761 DOI: 10.1111/j.1468-1293.2008.00576.x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
OBJECTIVES The effect of starting highly active antiretroviral therapy (HAART) early after the onset of acute retroviral syndrome (ARS) on CD4 and HIV-RNA trends was studied over a 2-year follow-up period. METHODS Four groups of HIV-infected patients stratified according to the time interval from ARS onset to HAART initiation and a control group of untreated patients were compared. RESULTS The results indicated that the earlier the start of HAART, the faster was the rate of CD4 increase and HIV-RNA decrease. However, this difference did not seem to persist at 24 months. CONCLUSIONS The optimal treatment strategy for HIV-infected patients needs to be explored further.
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Kalra L, Iveson E, Rambaran C, Sherwood R, Chowienczyk P, Ritter J, Shah A, Forrester T. Homocysteine, migration and early vascular impairment in people of African descent. Heart 2008; 94:1171-4. [DOI: 10.1136/hrt.2007.132670] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
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Korinthenberg R, Lütkenhöner B, Palm D, Ritter J. EEG-Verlangsamung nach hochdosiertem Methotrexat mit Citrovorumfaktor-Schutz. Eine spektralanalytische Untersuchung. KLIN NEUROPHYSIOL 2008. [DOI: 10.1055/s-2008-1061060] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Rüttermann S, Ritter J, Raab WHM, Bayer R, Janda R. Laser-induced fluorescence to discriminate between a dental composite resin and tooth. Dent Mater 2007; 23:1390-6. [PMID: 17207525 DOI: 10.1016/j.dental.2006.11.027] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2006] [Revised: 11/21/2006] [Accepted: 11/21/2006] [Indexed: 10/23/2022]
Abstract
PURPOSE Investigation of laser-induced fluorescence of an experimental pigment (Flu) to discriminate between a filling and the tooth and its influence on the material properties of experimental dental composites. MATERIALS AND METHODS Three experimental composites (EC) were manufactured. The standard contained no Flu, Flu-0.5 contained 0.5%, Flu-1.0 contained 1%. To judge the extent of fluorescence, specimens and fillings placed in natural teeth were irradiated with an infrared laser (980 nm, 120 mW). Flexural strength, modulus of elasticity, depth of cure, water sorption, solubility, and color (CIE-L(*)a(*)b(*)-values) were measured to investigate the influence of Flu on EC. ANOVA was calculated and the statistical significance was p < 0.05. RESULTS Strong laser-induced green fluorescence was observed so that fillings and tooth structures were clearly discriminated. No influence of Flu on flexural strength and modulus of elasticity occurred. Water sorption and solubility were far below the limits of EN ISO 4049. Increasing Flu concentrations revealed minor but significant reduction of depth of cure, shifts to more white and red and less yellow. SIGNIFICANCE Flu provides laser-induced fluorescence allowing an easy discrimination between fillings and teeth. Flu did not severely influence the material properties.
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Lehrnbecher T, Kaiser J, Varwig D, Ritter J, Groll AH, Creutzig U, Klingebiel T, Schwabe D. Antifungal usage in children undergoing intensive treatment for acute myeloid leukemia: analysis of the multicenter clinical trial AML-BFM 93. Eur J Clin Microbiol Infect Dis 2007; 26:735-8. [PMID: 17665231 DOI: 10.1007/s10096-007-0362-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
We retrospectively analyzed the antifungal usage in children with acute myeloid leukemia (AML). Overall, 211 of 304 patients (69.4%) received a total of 389 antifungal treatment episodes. In 234 episodes, initial antifungal treatment consisted of amphotericin B [as monotherapy, n = 193; median dosage (range) of amphotericin B deoxycholate 0.6 mg/kg per day (0.02-1.5 mg/kg per day) and of liposomal amphotericin B 3.0 mg/kg per day (0.6-30 mg/kg per day)], in 149 episodes of fluconazole [as monotherapy, n = 143; 5 mg/kg per day (1-29 mg/kg per day)], in 40 of flucytosine [as monotherapy, n = 1; 150 mg/kg per day (40-370 mg/kg per day)], and in 9 of itraconazole [as monotherapy, n = 8; 6 mg/kg per day (1.6-20 mg/kg per day)]. We conclude that the majority of children with AML receives at least one episode of antifungal therapy. Inappropriate dosing and combination of antimycotics need to be addressed in future educational measures.
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Heiser M, Ritter J, Sperling R, Kraume M. Koaxialrührwerk zum Rühren hochviskoser und nicht-Newtonscher Medien. CHEM-ING-TECH 2007. [DOI: 10.1002/cite.200700058] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Wollny S, Sperling R, Kraume M, Ritter J. Beanspruchung von Partikeln und Fluidelementen beim Rühren. CHEM-ING-TECH 2007. [DOI: 10.1002/cite.200700060] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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