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Haas R, Dücker KH, Küppers HA. Aktivitätskoeffizienten und Dissoziationskonstanten wäβriger Salpetersäure und Überchlorsäure. ACTA ACUST UNITED AC 2014. [DOI: 10.1002/bbpc.19650690202] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Göbel U, Haas R, Calaminus G, Botorek P, Schmidt P, Teske C, Schönberger S, Schneider D, Harms D. Testicular Germ Cell Tumors in Boys <10 Years: Results of the Protocol MAHO 98 in Respect to Surgery and Watch & Wait Strategy. KLINISCHE PADIATRIE 2013; 225:296-302. [DOI: 10.1055/s-0033-1355427] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Reisswig C, Ott CD, Abdikamalov E, Haas R, Mösta P, Schnetter E. Formation and coalescence of cosmological supermassive-black-hole binaries in supermassive-star collapse. PHYSICAL REVIEW LETTERS 2013; 111:151101. [PMID: 24160586 DOI: 10.1103/physrevlett.111.151101] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/29/2013] [Indexed: 05/27/2023]
Abstract
We study the collapse of rapidly rotating supermassive stars that may have formed in the early Universe. By self-consistently simulating the dynamics from the onset of collapse using three-dimensional general-relativistic hydrodynamics with fully dynamical spacetime evolution, we show that seed perturbations in the progenitor can lead to the formation of a system of two high-spin supermassive black holes, which inspiral and merge under the emission of powerful gravitational radiation that could be observed at redshifts z is approximately equal or > to 10 with the DECIGO or Big Bang Observer gravitational-wave observatories, assuming supermassive stars in the mass range 10(4)-10(6)M[symbol: see text]. The remnant is rapidly spinning with dimensionless spin a*=0.9. The surrounding accretion disk contains ~10% of the initial mass.
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Nachtkamp K, Kündgen A, Neukirchen J, Strupp C, Schroeder T, Haas R, Kobbe G, Gattermann N, Germing U. P-255 Inclusion criteria of clinical trials do not meet the real MDS population. A registry-based simulation. Leuk Res 2013. [DOI: 10.1016/s0145-2126(13)70302-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Zipperer E, Neukirchen J, Strupp C, Schroeder T, Abdu A, Kündgen A, Hildebrandt B, Schulte K, Haas R, Gattermann N, Germing U. P-049 Clinical and prognostic relationship of CMML to MDS and MPS. Leuk Res 2013. [DOI: 10.1016/s0145-2126(13)70098-5] [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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Geyh S, Cadeddu R, Fröbel J, Hünerlitürkoglu A, Kündgen A, Hermsen D, Zilkens C, Fenk R, Kobbe G, Germing U, Haas R, Schroeder T. P-230 MDS-derived mesenchymal stromal cells are phenotypically, structurally and epigenetically altered resulting in insufficient stromal support for CD34+ HSPC. Leuk Res 2013. [DOI: 10.1016/s0145-2126(13)70277-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Lauseker M, Kuendgen A, Giagounidis A, Aul C, Haas R, Schlenk R, Haase D, Platzbecker U, Hasford J, Germing U. P-101 Influence of WHO categories and gender on the prognosis of MDS del(5q) patients. Leuk Res 2013. [DOI: 10.1016/s0145-2126(13)70149-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Schemenau J, Baldus S, Anlauf M, Blum S, Nachtkamp K, Neukirchen J, Strupp C, Haas R, Gattermann N, Germing U. P-093 Hypoplastic myelodysplastic syndromes are not a specific clinical entity. Leuk Res 2013. [DOI: 10.1016/s0145-2126(13)70142-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Fröbel J, Hartwig S, Germing U, Kündgen A, Zilkens C, Schroeder T, Haas R, Czibere A, Lehr S. O-004 New minimal-invasive diagnostic procedures for patients with myelodysplastic syndromes by profiling the deep serum proteome. Leuk Res 2013. [DOI: 10.1016/s0145-2126(13)70026-2] [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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Geyh S, Oz S, Cadeddu RP, Fröbel J, Brückner B, Kündgen A, Fenk R, Bruns I, Zilkens C, Hermsen D, Gattermann N, Kobbe G, Germing U, Lyko F, Haas R, Schroeder T. Insufficient stromal support in MDS results from molecular and functional deficits of mesenchymal stromal cells. Leukemia 2013; 27:1841-51. [PMID: 23797473 DOI: 10.1038/leu.2013.193] [Citation(s) in RCA: 169] [Impact Index Per Article: 15.4] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2013] [Revised: 06/03/2013] [Accepted: 06/19/2013] [Indexed: 01/09/2023]
Abstract
Ineffective hematopoiesis is a major characteristic of myelodysplastic syndromes (MDS) causing relevant morbidity and mortality. Mesenchymal stromal cells (MSC) have been shown to physiologically support hematopoiesis, but their contribution to the pathogenesis of MDS remains elusive. We show that MSC from patients across all MDS subtypes (n=106) exhibit significantly reduced growth and proliferative capacities accompanied by premature replicative senescence. Osteogenic differentiation was significantly reduced in MDS-derived MSC, indicated by cytochemical stainings and reduced expressions of Osterix and Osteocalcin. This was associated with specific methylation patterns that clearly separated MDS-MSC from healthy controls and showed a strong enrichment for biological processes associated with cellular phenotypes and transcriptional regulation. Furthermore, in MDS-MSC, we detected altered expression of key molecules involved in the interaction with hematopoietic stem and progenitor cells (HSPC), in particular Osteopontin, Jagged1, Kit-ligand and Angiopoietin as well as several chemokines. Functionally, this translated into a significantly diminished ability of MDS-derived MSC to support CD34+ HSPC in long-term culture-initiating cell assays associated with a reduced cell cycle activity. Taken together, our comprehensive analysis shows that MSC from all MDS subtypes are structurally, epigenetically and functionally altered, which leads to impaired stromal support and seems to contribute to deficient hematopoiesis in MDS.
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Dolderer J, Medved F, Haas R, Siegel-Axel D, Schiller S, Schaller HE. Angiogenese und Vaskularisation beim Tissue Engineering von Fettgewebe. HANDCHIR MIKROCHIR P 2013; 45:99-107. [DOI: 10.1055/s-0032-1329944] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022] Open
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Schroeder T, Czibere A, Platzbecker U, Bug G, Uharek L, Luft T, Giagounidis A, Zohren F, Bruns I, Wolschke C, Rieger K, Fenk R, Germing U, Haas R, Kröger N, Kobbe G. Azacitidine and donor lymphocyte infusions as first salvage therapy for relapse of AML or MDS after allogeneic stem cell transplantation. Leukemia 2013; 27:1229-35. [PMID: 23314834 DOI: 10.1038/leu.2013.7] [Citation(s) in RCA: 170] [Impact Index Per Article: 15.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
The combination of azacitidine and donor lymphocyte infusions (DLI) as first salvage therapy for relapse after allogeneic transplantation (allo-HSCT) was studied in 30 patients with acute myeloid leukemia (AML; n=28) or myelodysplastic syndromes (MDS; n=2) within a prospective single-arm multicenter phase-II trial. Treatment schedule contained up to eight cycles azacitidine (100 mg/m(2)/day, days 1-5, every 28 days) followed by DLI (from 1-5 × 10(6) to 1-5 × 10(8) CD3(+)cells/kg) after every second azacitidine cycle. A median of three courses azacitidine (range 1-8) were administered, and 22 patients (73%) received DLI. Overall response rate was 30%, including seven complete remissions (CRs, 23%) and two partial remissions (7%). Five patients remain in CR for a median of 777 days (range 461-888). Patients with MDS or AML with myelodysplasia-related changes were more likely to respond (P=0.011), and a lower blast count (P=0.039) as well as high-risk cytogenetics (P=0.035) correlated with the likelihood to achieve CR. Incidence of acute and chronic graft-versus-host disease was 37% and 17%, respectively. Neutropenia and thrombocytopenia grade III/IV occurred during 65% and 63% of treatment cycles, while infections were the most common grade III/IV non-hematological toxicity. Azacitidine and DLI as salvage therapy is safe, induces long-term remissions and may become an alternative for patients with AML or MDS relapsing after allo-HSCT.
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Shcherbakov R, Pe’er A, Reynolds C, Haas R, Bode T, Laguna P. Prompt emission from tidal disruptions of white dwarfs by intermediate mass black holes. EPJ WEB OF CONFERENCES 2012. [DOI: 10.1051/epjconf/20123902007] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Germing U, Kündgen A, Haas R, Gattermann N. Myelodysplastische Syndrome (MDS). Dtsch Med Wochenschr 2012; 137:183-5. [PMID: 22278686 DOI: 10.1055/s-0031-1292887] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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Germing U, Lauseker M, Hildebrandt B, Symeonidis A, Cermak J, Fenaux P, Kelaidi C, Pfeilstöcker M, Nösslinger T, Sekeres M, Maciejewski J, Haase D, Schanz J, Seymour J, Kenealy M, Weide R, Lübbert M, Platzbecker U, Valent P, Götze K, Stauder R, Blum S, Kreuzer KA, Schlenk R, Ganser A, Hofmann WK, Aul C, Krieger O, Kündgen A, Haas R, Hasford J, Giagounidis A. Survival, prognostic factors and rates of leukemic transformation in 381 untreated patients with MDS and del(5q): A multicenter study. Leukemia 2012; 26:1286-92. [PMID: 22289990 DOI: 10.1038/leu.2011.391] [Citation(s) in RCA: 96] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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Laguna P, Haas R, Shcherbakov R, Bode T. Tidal disruption of white dwarfs by intermediate mass black holes. EPJ WEB OF CONFERENCES 2012. [DOI: 10.1051/epjconf/20123907002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Morgalla MH, Haas R, Grözinger G, Thiel C, Thiel K, Schuhmann MU, Schenk M. Experimental comparison of the measurement accuracy of the Licox(®) and Raumedic (®) Neurovent-PTO brain tissue oxygen monitors. ACTA NEUROCHIRURGICA. SUPPLEMENT 2012; 114:169-72. [PMID: 22327686 DOI: 10.1007/978-3-7091-0956-4_32] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
BACKGROUND Only a few experimental reports are available on the direct comparison of Licox(®) and Raumedic(®)-Neurovent-PTO brain tissue oxygen pressure (P(br)O(2)) monitors. We compared the two systems regarding their measurement properties under experimental in vitro and in vivo conditions. MATERIALS AND METHODS Eight Licox(®) and Raumedic(®) Neurovent-PTO(®) sensors were tested for 10 min at 37°C, atmospheric pressure, at an oxygen content of 0% and 100% before and after the in vivo test. The same probes were implanted in German landrace pigs, which underwent hepatectomy. The mean P(br)O(2) values were recorded every minute. An O(2) challenge with inhalation of 100% O(2) for 10 min was performed 2 h post-abdominal surgery. RESULTS At 0% O(2) content values varied from 0.2 to 7 mmHg, at 100% O(2) content from 130 to 165 mmHg. No difference between probes was found. In vivo tests: Raumedic® showed higher P(br)O(2) values (mean +6.3 mmHg, p < 0.0001) compared with Licox®. During O(2) challenge, both probes responded similarly; however, Raumedic(®) had a 10% higher response amplitude (p < 0.005). After explantation there was again no difference between the two sensors. CONCLUSION Raumedic(®) sensors measured higher P(br)O(2) values. There was no significant difference regarding overall measurement of in vitro accuracy between the two probes, which proved to be robust when used consecutively for longer periods and in different environments.
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Courchesne E, Karns C, Davis H, Ziccardi R, Carper R, Tigue Z, Chisum HJ, Moses P, Pierce K, Lord C, Lincoln A, Pizzo S, Schreibman L, Haas R, Akshoomoff N, Courchesne R. Unusual brain growth patterns in early life in patients with autistic disorder: An MRI study. Neurology 2011. [DOI: 10.1212/01.wnl.0000399191.79091.28] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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Schroeder T, Haas R, Kobbe G. Treatment of graft-versus-host disease with monoclonal antibodies and related fusion proteins. Expert Rev Hematol 2011; 3:633-51. [PMID: 21083479 DOI: 10.1586/ehm.10.46] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Allogeneic hematopoietic stem cell transplantation has evolved from an experimental treatment approach to a widely used, curative therapy to treat malignant and nonmalignant diseases of the hematopoietic system. Despite advances in donor selection, conditioning regimens and supportive care, acute and chronic graft-versus-host disease (GvHD) remain a major cause of morbidity and mortality. Steroids are the standard first-line treatment and are able to control GvHD in approximately 50% of patients. Those who fail on steroids have a poor long-term prognosis. Therefore, a large number of drugs and procedures have been evaluated as second-line therapy. Monoclonal antibodies have increasingly been used to treat malignancy and autoimmune disease during the last 20 years. Their unique ability to target specific antigens theoretically enables them to directly interfere with cellular mechanisms that are involved in GvHD pathology. For this reason, monoclonal antibodies have been studied extensively as a second-line treatment for acute and chronic GvHD. The purpose of this article is to collect published data on clinical trials from the current literature and to give an overview on efficacy and toxicity of monoclonal antibody treatment for GvHD.
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Zipperer E, Tanha N, Kündgen A, Fox F, Strupp C, Haas R, Gattermann N, Germing U. 55 Independent validation of the MDS Comorbidity Score (MDS-CI). Leuk Res 2011. [DOI: 10.1016/s0145-2126(11)70057-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Klärner V, Schroeder T, Kuendgen A, Safaian N, Weigelt C, Saure C, Kobbe G, Haas R, Gattermann N, Hildebrandt B, Germing U. 304 Clinical impact of trisomy 11 in patients with MDS and AML. Leuk Res 2011. [DOI: 10.1016/s0145-2126(11)70306-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Betgen A, Haas R, El-Mesbahe-Bouzeya N, Minkema D, Wolfrat M, Panneman C, Remeijer P. 996 poster EASYSIM: A PATIENT FRIENDLY VIRTUAL SIMULATION PROCEDURE FOR BONE METASTASES BASED ON DIAGNOSTIC IMAGING. Radiother Oncol 2011. [DOI: 10.1016/s0167-8140(11)71118-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Klärner V, Kuendgen A, Schroeder T, Weigelt C, Saure C, Dienst A, Kobbe G, Haas R, Gattermann N, Germing U. 93 Analysis of treatment choices and outcome for MDS and AML patients 60 years and older from the university of Dusseldorf. Leuk Res 2011. [DOI: 10.1016/s0145-2126(11)70095-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Schroeder T, Kündgen A, Kröger N, Platzbecker U, Stadler M, Braulke F, Schlenk R, Zohren F, Haase D, Gattermann N, Haas R, Kobbe G, Germing U. 103 Therapy-related myeloid neoplasms following treatment with radioiodine. Leuk Res 2011. [DOI: 10.1016/s0145-2126(11)70105-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Germing U, Neukirchen J, Strupp C, Bach K, Wulfert M, Haas R, Giagounidis A, Aul C, Gattermann N. 57 How to assess the medullary blast count in MDS? Pay attention to the proportion of erythroid cells! Leuk Res 2011. [DOI: 10.1016/s0145-2126(11)70059-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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