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Faasse MA, Nosnik IP, Diaz-Saldano D, Hodgkins KS, Liu DB, Schreiber J, Yerkes EB. Uroflowmetry with pelvic floor electromyography: inter-rater agreement on diagnosis of pediatric non-neurogenic voiding disorders. J Pediatr Urol 2015; 11:198.e1-6. [PMID: 26159493 DOI: 10.1016/j.jpurol.2015.05.012] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/07/2015] [Accepted: 05/27/2015] [Indexed: 10/23/2022]
Abstract
INTRODUCTION Uroflowmetry with electromyography (uroflow-EMG) is commonly used for evaluation of lower urinary tract (LUT) function in children. Diagnostic criteria based largely on uroflow-EMG findings have previously been proposed for several conditions collectively termed non-neurogenic voiding disorders (NNVDs). These include dysfunctional voiding (DV), idiopathic detrusor overactivity disorder (IDOD), detrusor underutilization disorder (DUD), and primary bladder neck dysfunction (PBND). It is unknown whether practitioners with varying levels of training and experience can apply the diagnostic criteria for these conditions with a high level of consistency. OBJECTIVE To assess inter-rater agreement on diagnosis of NNVDs using uroflow-EMG studies. STUDY DESIGN Six raters performed post hoc evaluation of 84 uroflow-EMG studies and associated clinical data from children with symptoms of LUT dysfunction and no evidence of neurologic or anatomic abnormalities. Each rater was asked to categorize the uroflow-EMG studies as being consistent with DV, IDOD, DUD, PBND, or normal/unclassifiable. A consensus diagnosis was noted for studies on which at least four raters agreed. Inter-rater agreement was assessed via calculation of unweighted Fleiss' kappa statistics. RESULTS Overall inter-rater agreement on NNVD diagnoses was moderate (kappa 0.46, 95% CI 0.38-0.54). Agreement between individual raters ranged from 0.33 (fair) to 0.74 (substantial) (Figure). There was no consensus on diagnosis for 20 patients (24%). DISCUSSION Several factors may contribute to inter-rater disagreement on diagnosis of NNVDs. These include instances where patients satisfy one criterion for a particular diagnosis while missing others - or have findings consistent with more than one diagnosis. Strategies to address this may involve simplifying the diagnostic criteria, developing a clear algorithm that prioritizes certain criteria, and/or allowing assignment of multiple diagnoses. Practitioners could also benefit from standardized education regarding the diagnostic criteria for NNVDs. Potential limitations of this analysis included the use of just one uroflow-EMG study per patient in almost all cases. Also, the raters had variable levels of previous experience using the diagnostic criteria for NNVDs, and it is possible that they were not always applied as originally intended. If this were the case, it would support development of a standardized education tool to facilitate practitioner understanding and application of the criteria. CONCLUSIONS Uroflow-EMG has shown promise for improving clinical management of NNVDs associated with pediatric LUT dysfunction. However, inter-rater agreement on NNVD diagnoses using current criteria is suboptimal. Various mechanisms should be explored to improve consistency in practitioners' diagnosis of NNVDs.
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Behr J, Bonella F, Bonnet R, Gläser S, Grohé C, Günther A, Koschel D, Kreuter M, Kirsten D, Krögel C, Markart P, Müller-Quernheim J, Neurohr C, Pfeifer M, Prasse A, Schönfeld N, Schreiber J, Wirtz H, Witt C, Costabel U. [Position Paper: Significance of the Forced Vital Capacity in Idiopathic Pulmonary Fibrosis]. Pneumologie 2015; 69:455-8. [PMID: 26227628 DOI: 10.1055/s-0034-1392602] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
Spirometry is a highly standardized method which allows to measure the forced vital capacity (FVC) with high precision and reproducibility. In patients with IPF FVC is directly linked to the disease process which is characterized by scaring of alveoli and shrinkage of the lungs. Consequently, there is ample evidence form clinical studies that the decline of FVC over time is consistently associated with mortality in IPF. As for the first time effective drugs for the treatment of IPF are available it becomes obvious that in studies which could demonstrate that the drug reduces FVC decline, a numerical effect on mortality was also observed, while in one study where a significant effect on FVC decline was missed, there was also no change in mortality. Based on these studies FVC decline is a validated surrogate of mortality in IPF. It is concluded that FVC decline is not only accepted as an endpoint of clinical treatment trials in IPF but is also valid as a patient related outcome parameter which should be considered for the assessment of the efficacy of an IPF drug.
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Schreiber J, Lerche K. Charakterisierung schwerer allergischer Asthmatiker mit Xolair®-Therapie. Baseline-Daten der X-Tab. Pneumologie 2015. [DOI: 10.1055/s-0035-1544683] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Schreiber J, Lerche K. Identifikation perennialer Aeroallergene bei schweren Asthmatikern. Pneumologie 2015. [DOI: 10.1055/s-0035-1544881] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Ma WJ, Bin JH, Wang HY, Yeung M, Kreuzer C, Streeter M, Foster PS, Cousens S, Kiefer D, Dromey B, Yan XQ, Meyer-ter-Vehn J, Zepf M, Schreiber J. Bright subcycle extreme ultraviolet bursts from a single dense relativistic electron sheet. PHYSICAL REVIEW LETTERS 2014; 113:235002. [PMID: 25526132 DOI: 10.1103/physrevlett.113.235002] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/17/2014] [Indexed: 06/04/2023]
Abstract
Double-foil targets separated by a low density plasma and irradiated by a petawatt-class laser are shown to be a copious source of coherent broadband radiation. Simulations show that a dense sheet of relativistic electrons is formed during the interaction of the laser with the tenuous plasma between the two foils. The coherent motion of the electron sheet as it transits the second foil results in strong broadband emission in the extreme ultraviolet, consistent with our experimental observations.
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Yeung M, Dromey B, Cousens S, Dzelzainis T, Kiefer D, Schreiber J, Bin JH, Ma W, Kreuzer C, Meyer-ter-Vehn J, Streeter MJV, Foster PS, Rykovanov S, Zepf M. Dependence of laser-driven coherent synchrotron emission efficiency on pulse ellipticity and implications for polarization gating. PHYSICAL REVIEW LETTERS 2014; 112:123902. [PMID: 24724650 DOI: 10.1103/physrevlett.112.123902] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/08/2013] [Indexed: 06/03/2023]
Abstract
The polarization dependence of laser-driven coherent synchrotron emission transmitted through thin foils is investigated experimentally. The harmonic generation process is seen to be almost completely suppressed for circular polarization opening up the possibility of producing isolated attosecond pulses via polarization gating. Particle-in-cell simulations suggest that current laser pulses are capable of generating isolated attosecond pulses with high pulse energies.
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Schulz U, Langwieler S, Riedel S, Schreiber J. [Pulmonary capillary blood volume and membrane components of pulmonary diffusion capacity in patients with chronic obstructive bronchitis (COPD)]. Pneumologie 2014; 68:266-9. [PMID: 24615667 DOI: 10.1055/s-0034-1365056] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
Reduced pulmonary diffusion capacity is a hallmark of COPD, although the relative contribution of the subcomponents of pulmonary diffusion--membranous component (Dm) and capillary volume (Vc)--is unknown. These components can be measured with the method of NO single-breath diffusion (DLNO). In a prospective study, pulmonary function tests including spirometry, body plethysmography and single-breath measurements of diffusion capacity with CO and NO were performed in 183 patients with COPD of varying severity. There was a severity-dependent decrease in DLCO. Furthermore, Dm as well as Vc was positively correlated with the severity of COPD measured by FEV1. In all stages of COPD, reduction of Vc was more pronounced than constriction of Dm. In patients with most severe COPD, the preponderance of the reduction of Vc was significantly more marked than in milder stages.We conclude that Dm as well as Vc contributes to the reduction of DLCO in COPD, with a predominance of Vc at all stages of COPD. This confirms the idea that the loss of pulmonary capillaries in COPD is functionally relevant.
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Schreiber J, Kopp MV, Korn S, Taube C, Buhl R. [Disease modification and duration of omalizumab treatment in patients with severe allergic asthma]. Pneumologie 2014; 68:187-92. [PMID: 24477463 DOI: 10.1055/s-0033-1359242] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
BACKGROUND AND METHODS Omalizumab is a monoclonal anti-IgE-antibody that is used to treat severe allergic asthma. The aim of this review was to evaluate the available evidence in a panel of experts and to provide recommendations on therapy duration with omalizumab. RESULTS A direct or indirect interaction between omalizumab and IgE production seems likely. Pharmacokinetic-pharmakodynamic models suggest that omalizumab modulates IgE production. This hypothesis is currently investigated in clinical studies. In addition, available evidence suggests that omalizumab mitigates different factors of airway remodeling. However, based on the currently available data, no recommendations can be given in regard to reduction of dosage or discontinuation of omalizumab in long term treated patients. CONCLUSIONS Currently, neither dose reductions nor treatment withdrawal can be recommended in patients with severe allergic asthma and long term treatment with omalizumab. Clinical studies addressing these issues are being conducted.
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Schreiber J, Langhorst H, Jüttner R, Rathjen FG. The IgCAMs CAR, BT-IgSF, and CLMP: Structure, Function, and Diseases. ADVANCES IN NEUROBIOLOGY 2014; 8:21-45. [DOI: 10.1007/978-1-4614-8090-7_2] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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Wang HY, Lin C, Liu B, Sheng ZM, Lu HY, Ma WJ, Bin JH, Schreiber J, He XT, Chen JE, Zepf M, Yan XQ. Laser-driven three-stage heavy-ion acceleration from relativistic laser-plasma interaction. PHYSICAL REVIEW. E, STATISTICAL, NONLINEAR, AND SOFT MATTER PHYSICS 2014; 89:013107. [PMID: 24580346 DOI: 10.1103/physreve.89.013107] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/07/2013] [Indexed: 06/03/2023]
Abstract
A three-stage heavy ion acceleration scheme for generation of high-energy quasimonoenergetic heavy ion beams is investigated using two-dimensional particle-in-cell simulation and analytical modeling. The scheme is based on the interaction of an intense linearly polarized laser pulse with a compound two-layer target (a front heavy ion layer + a second light ion layer). We identify that, under appropriate conditions, the heavy ions preaccelerated by a two-stage acceleration process in the front layer can be injected into the light ion shock wave in the second layer for a further third-stage acceleration. These injected heavy ions are not influenced by the screening effect from the light ions, and an isolated high-energy heavy ion beam with relatively low-energy spread is thus formed. Two-dimensional particle-in-cell simulations show that ∼100MeV/u quasimonoenergetic Fe24+ beams can be obtained by linearly polarized laser pulses at intensities of 1.1×1021W/cm2.
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Abs E, Goorden SMI, Schreiber J, Overwater IE, Hoogeveen-Westerveld M, Bruinsma CF, Aganović E, Borgesius NZ, Nellist M, Elgersma Y. TORC1-dependent epilepsy caused by acute biallelic Tsc1 deletion in adult mice. Ann Neurol 2013; 74:569-79. [PMID: 23720219 DOI: 10.1002/ana.23943] [Citation(s) in RCA: 62] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2011] [Revised: 05/11/2013] [Accepted: 05/17/2013] [Indexed: 11/08/2022]
Abstract
OBJECTIVE Seizure development in tuberous sclerosis complex (TSC) correlates with the presence of specific lesions called cortical tubers. Moreover, heterozygous TSC animal models do not show gross brain pathology and are seizure-free, suggesting that such pathology is a prerequisite for the development of epilepsy. However, cells within TSC lesions show increased activity of the target of rapamycin complex 1 (TORC1) pathway, and recent studies have implicated this pathway in non-TSC-related animal models of epilepsy and neuronal excitability. These findings imply a direct role for TORC1 in epilepsy. Here, we investigate the effect of increased TORC1 signaling induced by acute biallelic deletion of Tsc1 in healthy adult mice. METHODS Biallelic Tsc1 gene deletion was induced in adult Tsc1 heterozygous and wild-type mice. Seizures were monitored by electroencephalographic and video recordings. Molecular and cellular changes were investigated by Western blot analysis, immunohistochemistry, and electrophysiology. RESULTS Mice developed epilepsy a few days after biallelic Tsc1 deletion. Acute gene deletion was not accompanied by any obvious histological changes, but resulted in activation of the TORC1 pathway, enhanced neuronal excitability, and a decreased threshold for protein-synthesis-dependent long-term potentiation preceding the onset of seizures. Rapamycin treatment after seizure onset reduced TORC1 activity and fully abolished the seizures. INTERPRETATION Our data indicate a direct role for TORC1 signaling in epilepsy development, even in the absence of major brain pathology. This suggests that TORC1 is a promising target for treating seizures not only in TSC but also in other forms of epilepsy that result from increased TORC1 activation.
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Schreiber J, Sober L, Banta L, Glassbrenner L, Haman J, Mistry N, Olesinski K. Application of motor learning principles with stroke survivors. Occup Ther Health Care 2013; 13:23-44. [PMID: 23941121 DOI: 10.1080/j003v13n01_03] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
The purpose of this study was to determine the relationship between type of task and type of environment on retention and transfer of motor skills when applied to stroke survivors, as measured by time to complete the task and the number of errors. It was expected that those performing a purposeful task in a familiar environment (home) would demonstrate greater retention and transfer of the motor task; however, data was inconclusive.
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Langwieler S, Smektala E, Waldburg N, Hachenberg T, Küster D, Schreiber J. [45-year old patient with progressive shortness of breath and "crazy paving"]. Internist (Berl) 2013; 53:1359-63. [PMID: 22915305 DOI: 10.1007/s00108-012-3130-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
A 45-year-old man referred with progressive shortness of breath. Chest X-ray revealed a diffuse parenchymal process in the lungs, which was characterized as a "crazy paving" pattern in the thoracic CT. Pulmonary function test showed severe impairment of diffusion capacity and apparent respiratory insufficiency. Bronchoalveolar lavage and histological examinations of transbronchial lung biopsies revealed alveolar proteinosis. Because of the presence of anti-granulocyte macrophage colony-stimulating factor (GM-CSF) autoantibodies, a primary form of this disorder was diagnosed. Therapeutic whole-lung lavage was performed twice and resulted in a continuing remission.
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Schreiber J, Nierhaus A, Braune SA, de Heer G, Kluge S. Comparison of three different commercial PCR assays for the detection of pathogens in critically ill sepsis patients. Med Klin Intensivmed Notfmed 2013; 108:311-8. [PMID: 23516029 DOI: 10.1007/s00063-013-0227-1] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2012] [Revised: 01/16/2013] [Accepted: 02/03/2013] [Indexed: 12/31/2022]
Abstract
INTRODUCTION The high mortality rate associated with sepsis necessitates a timely identification of the causative organism in order to optimize antimicrobial therapy. PCR assays are increasingly being used for this purpose. The aim of this study was to compare three commercially available PCR systems for the diagnosis of systemic infections. PATIENTS AND METHODS In a prospective observational study, a broad-range (SepsiTest®; Molzym, Bremen, Germany) and two multiplex PCR assays (VYOO®; SIRS-Lab, Jena, Germany and LightCycler® SeptiFast; Roche, Mannheim, Germany) were compared to blood cultures with respect to the clinical course of 50 critically ill patients with sepsis, severe sepsis or septic shock. RESULTS Pathogens were detected by PCR in 12 % (SepsiTest®), 10 % (VYOO®) and 14 % (LightCycler® SeptiFast) of samples and in 26 % by blood culture. Negative results were obtained using all four methods in 32 samples (64 %) and 3 (6 %) samples were positive in all tests. Upon consideration of additional diagnostic findings and the clinical course, eight (16 %) of the positive blood culture results were deemed clinically relevant. All three PCR assays could also identify the causative organism (or a specific gene thereof) in three of these eight positive blood cultures, whereas for five of the eight, all three PCR assays were negative. In one patient with a negative blood culture, the SepsiTest®, VYOO® and LightCycler® SeptiFast assays were positive for Streptococcus species. The PCR assays appeared to be less susceptible than blood cultures to false-positive results arising from contamination with coagulase-negative staphylococcal organisms. CONCLUSION There was some variability between the three PCR assays tested and the corresponding blood cultures with regards to the type of pathogen detected. The three PCR assays appeared to be less susceptible to false-positive results than blood cultures.
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Behr J, Günther A, Ammenwerth W, Bittmann I, Bonnet R, Buhl R, Eickelberg O, Ewert R, Gläser S, Gottlieb J, Grohé C, Kreuter M, Kroegel C, Markart P, Neurohr C, Pfeifer M, Prasse A, Schönfeld N, Schreiber J, Sitter H, Theegarten D, Theile A, Wilke A, Wirtz H, Witt C, Worth H, Zabel P, Müller-Quernheim J, Costabel U. [German guideline for diagnosis and management of idiopathic pulmonary fibrosis]. Pneumologie 2013; 67:81-111. [PMID: 23325398 DOI: 10.1055/s-0032-1326009] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
Idiopathic pulmonary fibrosis is a fatal lung disease with a variable and unpredictable natural history and limited treatment options. Since publication of the ATS-ERS statement on IPF in the year 2000 diagnostic standards have improved and a considerable number of randomized controlled treatment trials have been published necessitating a revision. In the years 2006 - 2010 an international panel of IPF experts produced an evidence-based guideline on diagnosis and treatment of IPF, which was published in 2011. In order to implement this evidence-based guideline into the German Health System a group of German IPF experts translated and commented the international guideline, also including new publications in the field. A consensus conference was held in Bochum on December 3rd 2011 under the protectorate of the "Deutsche Gesellschaft für Pneumologie und Beatmungsmedizin (DGP)" and supervised by the "Arbeitsgemeinschaft der Wissenschaftlichen Medizinischen Fachgesellschaften" (AWMF). Most recommendations of the international guideline were found to be appropriate for the german situation. Based on recent clinical studies "weak negative" treatment recommendations for pirfenidone and anticoagulation were changed into "weak positive" for pirfenidone and "strong negative" for anticoagulation. Based on negative results from the PANTHER-trial the recommendation for the combination therapy of prednisone plus azathiorpine plus N-acetlycsteine was also changed into strong negative für patients with definite IPF. This document summarizes essential parts of the international IPF guideline and the comments and recommendations of the German IPF consensus conference.
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Volkmer H, Schreiber J, Rathjen FG. Regulation of adhesion by flexible ectodomains of IgCAMs. Neurochem Res 2012; 38:1092-9. [PMID: 23054071 DOI: 10.1007/s11064-012-0888-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2012] [Accepted: 09/10/2012] [Indexed: 01/06/2023]
Abstract
To perform their diverse biological functions the adhesion activities of the cell adhesion molecules of the immunoglobulin superfamily (IgCAMs) might be regulated by local clustering, proteolytical shedding of their ectodomains or rapid recycling to and from the plasma membrane. Another form of regulation of adhesion might be obtained through flexible ectodomains of IgCAMs which adopt distinct conformations and which in turn modulate their adhesion activity. Here, we discuss variations in the conformation of the extracellular domains of CEACAM1 and CAR that might influence their binding and signaling activities. Furthermore, we concentrate on alternative splicing of single domains and short segments in the extracellular regions of L1 subfamily members that might affect the organization of the N-terminal located Ig-like domains. In particular, we discuss variations of the linker sequence between Ig-like domains 2 and 3 (D2 and D3) that is required for the horseshoe conformation.
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Schreiber J, Moreno C, Garcia BG, Louvet A, Trepo E, Henrion J, Thabut D, Mathurin P, Deltenre P. Meta-analysis: the impact of IL28B polymorphisms on rapid and sustained virological response in HCV-2 and -3 patients. Aliment Pharmacol Ther 2012; 36:353-62. [PMID: 22742526 DOI: 10.1111/j.1365-2036.2012.05197.x] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/24/2012] [Revised: 03/06/2012] [Accepted: 06/05/2012] [Indexed: 12/18/2022]
Abstract
BACKGROUND Recent studies suggested that IL28B polymorphisms may affect rapid and sustained virological response rates in HCV patients infected with genotype 2 or 3. AIM To assess the role of IL28B polymorphisms on the virological response in HCV-2 and -3 patients. METHODS We performed meta-analysis of studies evaluating the impact of rs12979860 and rs8099917 polymorphisms on rapid and sustained virological response in HCV-2 or -3 patients. RESULTS Twenty-three studies involving 3042 patients were included. The first meta-analysis evaluated the impact of rs12979860 polymorphism and included 1963 patients. When compared with rs12979860 CT/TT patients, CC patients had a higher rapid virological response rate (mean difference: 12.9%, 95% CI: 6.5-19.4%, P < 0.001) and a higher sustained virological response rate (mean difference: 4.9%, 95% CI: 0.1-9.8%, P = 0.046). The second meta-analysis evaluated the impact of rs8099917 polymorphism and included 2246 patients. When compared with rs8099917 TG/GG patients, TT patients had a higher rapid virological response rate (mean difference: 14.8%, 95% CI: 7.2-22.4%, P < 0.001) and a higher sustained virological response rate (mean difference: 5.5%, 95% CI: 0.4-10.6%, P = 0.033). When considering only patients treated for 24 weeks, results were unchanged. No potential sources of between-study heterogeneity were identified. CONCLUSIONS Favourable IL28B polymorphisms are associated with higher rapid and sustained virological response rates in HCV-2 and -3 patients. However, as the impact on a sustained response is very limited, it is unlikely that IL28B polymorphisms provide additional predictive value when considering other predictors of a sustained response.
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Palmer CAJ, Schreiber J, Nagel SR, Dover NP, Bellei C, Beg FN, Bott S, Clarke RJ, Dangor AE, Hassan SM, Hilz P, Jung D, Kneip S, Mangles SPD, Lancaster KL, Rehman A, Robinson APL, Spindloe C, Szerypo J, Tatarakis M, Yeung M, Zepf M, Najmudin Z. Rayleigh-Taylor instability of an ultrathin foil accelerated by the radiation pressure of an intense laser. PHYSICAL REVIEW LETTERS 2012; 108:225002. [PMID: 23003606 DOI: 10.1103/physrevlett.108.225002] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/03/2012] [Indexed: 06/01/2023]
Abstract
We report experimental evidence for a Rayleigh-Taylor-like instability driven by radiation pressure of an ultraintense (10(21) W/cm(2)) laser pulse. The instability is witnessed by the highly modulated profile of the accelerated proton beam produced when the laser irradiates a 5 nm diamondlike carbon (90% C, 10% H) target. Clear anticorrelation between bubblelike modulations of the proton beam and transmitted laser profile further demonstrate the role of the radiation pressure in modulating the foil. Measurements of the modulation wavelength, and of the acceleration from Doppler-broadening of back-reflected light, agree quantitatively with particle-in-cell simulations performed for our experimental parameters and which confirm the existence of this instability.
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Dazinger F, Schreiber J, Kahn T. DTI (Diffusion Tensor Imaging) - ein Überblick. ROFO-FORTSCHR RONTG 2012. [DOI: 10.1055/s-0032-1311479] [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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Humble N, Allinger K, Assmann W, Bin J, Dollinger G, Drexler G, Friedl A, Hilz P, Kiefer D, Ma W, Michalski D, Molls M, Reinhardt S, Schmid T, Zlobinskaya O, Schreiber J, Wilkens J. 83 SINGLE SHOT HIGH DOSE CELL IRRADIATIONS WITH LASER-DRIVEN PROTONS. Radiother Oncol 2012. [DOI: 10.1016/s0167-8140(12)70060-9] [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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Altmann S, Schreiber J, Damert HG, Mirastschijski U, Schneider W. An isolated hand tumour as primary manifestation of sarcoidosis. SARCOIDOSIS, VASCULITIS, AND DIFFUSE LUNG DISEASES : OFFICIAL JOURNAL OF WASOG 2011; 28:72-74. [PMID: 21796894] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
BACKGROUND Sarcoidosis is a systemic disorder with unknown etiology, characterized by non-caseating granulomas in numerous organs and tissues. In 90% of patients lung and lymph nodes are involved. The incidence of sarcoidal granulomas in the upper extremities is low. Here we present the case of a primary hand manifestation of sarcoidosis without clinical systemic involvement. OBJECTIVES A young woman presented with a painful swelling in her right hand. There were no signs of inflammation. Normal perfusion, mobility and sensibility were found. Magnetic resonance imaging (MRI) revealed a tumour infiltrating the muscles and flexor tendons of the third digit around the metacarpal bone and with pathological signal enhancement after administration of contrast medium. RESULTS Intraoperatively, nodular masses and fat tissue were seen. Histological examination after radical tumour resection showed sarcoidal granulomas. Postoperative staging diagnostics with computed tomography (CT) demonstrated multiple thoracic lymph node swellings in the mediastinum and bilateral hill. Follow-up after one year we saw normal scars in the palmar hand. There was no sign of local recurrence. The pulmological care is still going on. CONCLUSIONS Sarcoidosis is a rare, often asymptomatic disease. Patients present with dyspnoe and cough caused by the inflammation of the lung. The first clinical manifestation of sarcoidosis as a tumor in the palmar hand is unusual. Extrapulmonary systemic or progressive sarcoidosis is regarded as an indication for therapy with glucocorticosteroids. This case demonstrates that surgical excision enabled complete local cure without necessity of systemic and/or local treatment with steroids.
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Malfertheiner M, Waldburg N, Schreiber J. Intralobulärer Lungensequester mit Aspergillose bei einem beschwerdefreien 39-jährigen Mann. Dtsch Med Wochenschr 2011; 136:1200-2. [DOI: 10.1055/s-0031-1280541] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Borghesi M, Kar S, Prasad R, Kakolee FK, Quinn K, Ahmed H, Sarri G, Ramakrishna B, Qiao B, Geissler M, Ter-Avetisyan S, Zepf M, Schettino G, Stevens B, Tolley M, Ward A, Green J, Foster PS, Spindloe C, Gallegos P, Robinson AL, Neely D, Carroll DC, Tresca O, Yuan X, Quinn M, McKenna P, Dover N, Palmer C, Schreiber J, Najmudin Z, Sari I, Kraft M, Merchant M, Jeynes JC, Kirkby K, Fiorini F, Kirby D, Green S. Ion source development and radiobiology applications within the LIBRA project. ACTA ACUST UNITED AC 2011. [DOI: 10.1117/12.888262] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
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Abstract
Adverse effects of drug therapy may induce a wide variety of bronchopulmonary disorders. The spectrum of drug induced lung and bronchial diseases include simple cough, bronchial obstruction, and obstructive bronchiolitis. Lung parenchyma may be affected by alveolitis/pneumonitis or lung fibrosis. Further damage patterns are noncardiac pulmonary oedema, diffuse alveolar damage, diffuse alveolar haemorrhage, eosinophilic lung diseases, pulmonary vascular disorders as well as pleural affections. These side effects rarely have pathognomonic features. Therefore they are relevant differential diagnoses of genuine pulmonary diseases. Diagnostics is based mainly on the verification of a compatible disease pattern, exclusion of differential diagnoses, and assessment of the temporal relationship and the consequences of drug abstention. Reexposure is rarely indicated. Strict elimination of the responsible drugs is the most important therapeutic measure. Additional drug therapy, mostly with glucocorticosteroids, may be indicated.
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Palmer CAJ, Dover NP, Pogorelsky I, Babzien M, Dudnikova GI, Ispiriyan M, Polyanskiy MN, Schreiber J, Shkolnikov P, Yakimenko V, Najmudin Z. Monoenergetic proton beams accelerated by a radiation pressure driven shock. PHYSICAL REVIEW LETTERS 2011; 106:014801. [PMID: 21231748 DOI: 10.1103/physrevlett.106.014801] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/19/2010] [Indexed: 05/30/2023]
Abstract
We report on the acceleration of impurity-free quasimononenergetic proton beams from an initially gaseous hydrogen target driven by an intense infrared (λ=10 μm) laser. The front surface of the target was observed by optical probing to be driven forward by the radiation pressure of the laser. A proton beam of ∼MeV energy was simultaneously recorded with narrow energy spread (σ∼4%), low normalized emittance (∼8 nm), and negligible background. The scaling of proton energy with the ratio of intensity over density (I/n) confirms that the acceleration is due to the radiation pressure driven shock.
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