1
|
Macêdo ARS, Vasilopoulos A, Akritidis M, Plascak JA, Fytas NG, Weigel M. Two-dimensional dilute Baxter-Wu model: Transition order and universality. Phys Rev E 2023; 108:024140. [PMID: 37723817 DOI: 10.1103/physreve.108.024140] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2023] [Accepted: 08/07/2023] [Indexed: 09/20/2023]
Abstract
We investigate the critical behavior of the two-dimensional spin-1 Baxter-Wu model in the presence of a crystal-field coupling Δ with the goal of determining the universality class of transitions along the second-order part of the transition line as one approaches the putative location of the multicritical point. We employ extensive Monte Carlo simulations using two different methodologies: (i) a study of the zeros of the energy probability distribution, closely related to the Fisher zeros of the partition function, and (ii) the well-established multicanonical approach employed to study the probability distribution of the crystal-field energy. A detailed finite-size scaling analysis in the regime of second-order phase transitions in the (Δ,T) phase diagram supports previous claims that the transition belongs to the universality class of the four-state Potts model. For positive values of Δ, we observe the presence of strong finite-size effects, indicative of crossover effects due to the proximity of the first-order part of the transition line. Finally, we demonstrate how a combination of cluster and heat-bath updates allows one to equilibrate larger systems, and we demonstrate the potential of this approach for resolving the ambiguities observed in the regime of Δ≳0.
Collapse
Affiliation(s)
- A R S Macêdo
- Departamento de Física, Instituto de Ciências Exatas, Universidade Federal de Minas Gerais, C.P. 702, Belo Horizonte 65919-050, MG, Brazil
- Instituto Federal do Maranhão - Campus Imperatriz, Imperatriz 65919-050, MA, Brazil
| | - A Vasilopoulos
- Centre for Fluid and Complex Systems, Coventry University, Coventry CV1 5FB, United Kingdom
| | - M Akritidis
- Centre for Fluid and Complex Systems, Coventry University, Coventry CV1 5FB, United Kingdom
| | - J A Plascak
- Departamento de Física, Instituto de Ciências Exatas, Universidade Federal de Minas Gerais, C.P. 702, Belo Horizonte 65919-050, MG, Brazil
- Universidade Federal da Paraíba, Centro de Ciências Exatas e da Natureza - Campus I, Departamento de Física - CCEN Cidade Universitária, João Pessoa 58051-970, PB, Brazil
- Center for Simulational Physics, University of Georgia, Athens, Georgia 30602, USA
| | - N G Fytas
- Centre for Fluid and Complex Systems, Coventry University, Coventry CV1 5FB, United Kingdom
- Department of Mathematical Sciences, University of Essex, Colchester CO4 3SQ, United Kingdom
| | - M Weigel
- Institut für Physik, Technische Universität Chemnitz, 09107 Chemnitz, Germany
| |
Collapse
|
2
|
Münster L, Weigel M. Cluster percolation in the two-dimensional Ising spin glass. Phys Rev E 2023; 107:054103. [PMID: 37329020 DOI: 10.1103/physreve.107.054103] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2023] [Accepted: 03/03/2023] [Indexed: 06/18/2023]
Abstract
Suitable cluster definitions have allowed researchers to describe many ordering transitions in spin systems as geometric phenomena related to percolation. For spin glasses and some other systems with quenched disorder, however, such a connection has not been fully established, and the numerical evidence remains incomplete. Here we use Monte Carlo simulations to study the percolation properties of several classes of clusters occurring in the Edwards-Anderson Ising spin-glass model in two dimensions. The Fortuin-Kasteleyn-Coniglio-Klein clusters originally defined for the ferromagnetic problem do percolate at a temperature that remains nonzero in the thermodynamic limit. On the Nishimori line, this location is accurately predicted by an argument due to Yamaguchi. More relevant for the spin-glass transition are clusters defined on the basis of the overlap of several replicas. We show that various such cluster types have percolation thresholds that shift to lower temperatures by increasing the system size, in agreement with the zero-temperature spin-glass transition in two dimensions. The overlap is linked to the difference in density of the two largest clusters, thus supporting a picture where the spin-glass transition corresponds to an emergent density difference of the two largest clusters inside the percolating phase.
Collapse
Affiliation(s)
- L Münster
- Institut für Physik, Technische Universität Chemnitz, 09107 Chemnitz, Germany
| | - M Weigel
- Institut für Physik, Technische Universität Chemnitz, 09107 Chemnitz, Germany
| |
Collapse
|
3
|
Tsagkas C, Horvath-Huck A, Haas T, Amann M, Todea A, Altermatt A, Müller J, Cagol A, Leimbacher M, Barakovic M, Weigel M, Pezold S, Sprenger T, Kappos L, Bieri O, Granziera C, Cattin P, Parmar K. Fully Automatic Method for Reliable Spinal Cord Compartment Segmentation in Multiple Sclerosis. AJNR Am J Neuroradiol 2023; 44:218-227. [PMID: 36702504 PMCID: PMC9891337 DOI: 10.3174/ajnr.a7756] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2022] [Accepted: 12/05/2022] [Indexed: 01/27/2023]
Abstract
BACKGROUND AND PURPOSE Fully automatic quantification methods of spinal cord compartments are needed to study pathologic changes of the spinal cord GM and WM in MS in vivo. We propose a novel method for automatic spinal cord compartment segmentation (SCORE) in patients with MS. MATERIALS AND METHODS The cervical spinal cords of 24 patients with MS and 24 sex- and age-matched healthy controls were scanned on a 3T MR imaging system, including an averaged magnetization inversion recovery acquisition sequence. Three experienced raters manually segmented the spinal cord GM and WM, anterior and posterior horns, gray commissure, and MS lesions. Subsequently, manual segmentations were used to train neural segmentation networks of spinal cord compartments with multidimensional gated recurrent units in a 3-fold cross-validation fashion. Total intracranial volumes were quantified using FreeSurfer. RESULTS The intra- and intersession reproducibility of SCORE was high in all spinal cord compartments (eg, mean relative SD of GM and WM: ≤ 3.50% and ≤1.47%, respectively) and was better than manual segmentations (all P < .001). The accuracy of SCORE compared with manual segmentations was excellent, both in healthy controls and in patients with MS (Dice similarity coefficients of GM and WM: ≥ 0.84 and ≥0.92, respectively). Patients with MS had lower total WM areas (P < .05), and total anterior horn areas (P < .01 respectively), as measured with SCORE. CONCLUSIONS We demonstrate a novel, reliable quantification method for spinal cord tissue segmentation in healthy controls and patients with MS and other neurologic disorders affecting the spinal cord. Patients with MS have reduced areas in specific spinal cord tissue compartments, which may be used as MS biomarkers.
Collapse
Affiliation(s)
- C Tsagkas
- From the Neurologic Clinic and Policlinic, Departments of Medicine (C.T., M.A., J.M., M.W., T.S., L.K., C.G., K.P.), Clinical Research and Biomedical Engineering
- Translational Imaging in Neurology Basel (C.T., A.T., J.M., A.C., M.B., M.W., C.G., K.P.)
| | - A Horvath-Huck
- Department of Biomedical Engineering (A.H.-H., M.A., A.C., M.B., M.W., S.P., O.B., C.G., P.C.), University of Basel, Allschwil, Switzerland
| | - T Haas
- Department of Medicine and Biomedical Engineering; Division of Radiological Physics (T.H., M.W., O.B.)
| | - M Amann
- From the Neurologic Clinic and Policlinic, Departments of Medicine (C.T., M.A., J.M., M.W., T.S., L.K., C.G., K.P.), Clinical Research and Biomedical Engineering
- Department of Biomedical Engineering (A.H.-H., M.A., A.C., M.B., M.W., S.P., O.B., C.G., P.C.), University of Basel, Allschwil, Switzerland
- Medical Image Analysis Center AG (M.A., A.A.), Basel, Switzerland
| | - A Todea
- Translational Imaging in Neurology Basel (C.T., A.T., J.M., A.C., M.B., M.W., C.G., K.P.)
- Department of Radiology; Department of Neuroradiology (A.T.), Clinic for Radiology & Nuclear Medicine; and Research Center for Clinical Neuroimmunology
| | - A Altermatt
- Medical Image Analysis Center AG (M.A., A.A.), Basel, Switzerland
| | - J Müller
- From the Neurologic Clinic and Policlinic, Departments of Medicine (C.T., M.A., J.M., M.W., T.S., L.K., C.G., K.P.), Clinical Research and Biomedical Engineering
- Translational Imaging in Neurology Basel (C.T., A.T., J.M., A.C., M.B., M.W., C.G., K.P.)
| | - A Cagol
- Translational Imaging in Neurology Basel (C.T., A.T., J.M., A.C., M.B., M.W., C.G., K.P.)
- Department of Biomedical Engineering (A.H.-H., M.A., A.C., M.B., M.W., S.P., O.B., C.G., P.C.), University of Basel, Allschwil, Switzerland
| | - M Leimbacher
- Medical Faculty (M.L., P.C.), University of Basel, Basel, Switzerland
| | - M Barakovic
- Translational Imaging in Neurology Basel (C.T., A.T., J.M., A.C., M.B., M.W., C.G., K.P.)
- Department of Biomedical Engineering (A.H.-H., M.A., A.C., M.B., M.W., S.P., O.B., C.G., P.C.), University of Basel, Allschwil, Switzerland
| | - M Weigel
- From the Neurologic Clinic and Policlinic, Departments of Medicine (C.T., M.A., J.M., M.W., T.S., L.K., C.G., K.P.), Clinical Research and Biomedical Engineering
- Translational Imaging in Neurology Basel (C.T., A.T., J.M., A.C., M.B., M.W., C.G., K.P.)
- Department of Medicine and Biomedical Engineering; Division of Radiological Physics (T.H., M.W., O.B.)
- Department of Biomedical Engineering (A.H.-H., M.A., A.C., M.B., M.W., S.P., O.B., C.G., P.C.), University of Basel, Allschwil, Switzerland
| | - S Pezold
- Department of Biomedical Engineering (A.H.-H., M.A., A.C., M.B., M.W., S.P., O.B., C.G., P.C.), University of Basel, Allschwil, Switzerland
| | - T Sprenger
- From the Neurologic Clinic and Policlinic, Departments of Medicine (C.T., M.A., J.M., M.W., T.S., L.K., C.G., K.P.), Clinical Research and Biomedical Engineering
- Department of Neurology (T.S.), DKD Helios Klinik Wiesbaden, Wiesbaden, Germany
| | - L Kappos
- From the Neurologic Clinic and Policlinic, Departments of Medicine (C.T., M.A., J.M., M.W., T.S., L.K., C.G., K.P.), Clinical Research and Biomedical Engineering
- Neuroscience Basel (RC2NB) (L.K.), Departments of Medicine, Clinical Research, and Biomedical Imaging, University Hospital Basel and University of Basel, Basel, Switzerland
| | - O Bieri
- Department of Medicine and Biomedical Engineering; Division of Radiological Physics (T.H., M.W., O.B.)
- Department of Biomedical Engineering (A.H.-H., M.A., A.C., M.B., M.W., S.P., O.B., C.G., P.C.), University of Basel, Allschwil, Switzerland
| | - C Granziera
- From the Neurologic Clinic and Policlinic, Departments of Medicine (C.T., M.A., J.M., M.W., T.S., L.K., C.G., K.P.), Clinical Research and Biomedical Engineering
- Translational Imaging in Neurology Basel (C.T., A.T., J.M., A.C., M.B., M.W., C.G., K.P.)
- Department of Biomedical Engineering (A.H.-H., M.A., A.C., M.B., M.W., S.P., O.B., C.G., P.C.), University of Basel, Allschwil, Switzerland
| | - P Cattin
- Department of Biomedical Engineering (A.H.-H., M.A., A.C., M.B., M.W., S.P., O.B., C.G., P.C.), University of Basel, Allschwil, Switzerland
- Medical Faculty (M.L., P.C.), University of Basel, Basel, Switzerland
| | - K Parmar
- From the Neurologic Clinic and Policlinic, Departments of Medicine (C.T., M.A., J.M., M.W., T.S., L.K., C.G., K.P.), Clinical Research and Biomedical Engineering
- Translational Imaging in Neurology Basel (C.T., A.T., J.M., A.C., M.B., M.W., C.G., K.P.)
- Reha Rheinfelden (K.P.), Rheinfelden, Switzerland
| |
Collapse
|
4
|
Klement RJ, Champ CE, Kämmerer U, Koebrunner PS, Krage K, Schäfer G, Weigel M, Sweeney RA. Impact of a ketogenic diet intervention during radiotherapy on body composition: III-final results of the KETOCOMP study for breast cancer patients. Breast Cancer Res 2020; 22:94. [PMID: 32819413 PMCID: PMC7441712 DOI: 10.1186/s13058-020-01331-5] [Citation(s) in RCA: 36] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2020] [Accepted: 08/11/2020] [Indexed: 01/09/2023] Open
Abstract
Background Obesity and low muscle mass are associated with worse outcomes of breast cancer patients. We conducted a controlled trial to study the impact of a ketogenic diet (KD) based on natural foods versus an unspecified standard diet (SD) on body composition in breast cancer patients undergoing radiotherapy. Methods Patients with non-metastasized breast cancer were allocated to either the KD (N = 32) or the SD (N = 31) during radiotherapy. Body composition was measured weekly by bioimpedance analysis. Blood parameters and quality of life were assessed before, during, and at the end of radiotherapy. Results A total of 29 KD and 30 SD patients completed the study. During radiotherapy, mean and median fasting BHB concentrations in the KD group were 0.72 and 0.49 mmol/l (range 0.06–4.9) which was significantly higher than those in the SD group (p < 2.2 × 10−16). There was a very small and insignificant increase in body weight and fat mass in the SD group, as well as a decrease of fat free mass. In contrast, patients in the KD group lost body weight and fat free and skeletal muscle mass quickly after diet onset, which for the most part was related to water losses. The KD did not cause further substantial changes in fat free or skeletal muscle mass, but was associated with a gradual decrease of 0.4 kg body weight and fat mass per week (p < 0.0001). The KD significantly decreased free T3 levels by 0.06 pg/ml/week (p = 6.3 × 10−5). Global quality of life remained stable in the SD group but increased in the KD group from a score of 66.7 to 75.0 (p = 0.20). Conclusions In breast cancer patients undergoing curative radiotherapy, a KD based on natural foods is feasible. After initial water losses, the KD tends to reduce body weight and fat mass while preserving fat free and skeletal muscle mass. Trial registration ClinicalTrials.gov identifier: NCT02516501, registered on August 06, 2015.
Collapse
Affiliation(s)
- Rainer J Klement
- Department of Radiation Oncology, Leopoldina Hospital, Robert-Koch-Straße 10, 97422, Schweinfurt, Germany.
| | - Colin E Champ
- Department of Radiation Oncology, Duke University Medical Center, Durham, NC, USA
| | - Ulrike Kämmerer
- Department of Obstetrics and Gynaecology, University Hospital of Würzburg, Würzburg, Germany
| | - Petra S Koebrunner
- Department of Radiation Oncology, Leopoldina Hospital, Robert-Koch-Straße 10, 97422, Schweinfurt, Germany
| | - Kelley Krage
- Department of Radiation Oncology, Leopoldina Hospital, Robert-Koch-Straße 10, 97422, Schweinfurt, Germany
| | - Gabriele Schäfer
- Department of Radiation Oncology, Leopoldina Hospital, Robert-Koch-Straße 10, 97422, Schweinfurt, Germany
| | - M Weigel
- Department of Obstetrics and Gynaecology, Leopoldina Hospital, Breast Cancer Centre, Schweinfurt, Germany
| | - Reinhart A Sweeney
- Department of Radiation Oncology, Leopoldina Hospital, Robert-Koch-Straße 10, 97422, Schweinfurt, Germany
| |
Collapse
|
5
|
Hack CC, Häberle L, Brucker SY, Janni W, Volz B, Loehberg CR, Hartkopf AD, Walter CB, Baake G, Fridman A, Malter W, Wuerstlein R, Harbeck N, Hoffmann O, Kuemmel S, Martin B, Thomssen C, Graf H, Wolf C, Lux MP, Bayer CM, Rauh C, Almstedt K, Gass P, Heindl F, Brodkorb T, Willer L, Lindner C, Kolberg HC, Krabisch P, Weigel M, Steinfeld-Birg D, Kohls A, Brucker C, Schulz V, Fischer G, Pelzer V, Rack B, Beckmann MW, Fehm T, Rody A, Maass N, Hein A, Fasching PA, Nabieva N. Complementary and alternative medicine and musculoskeletal pain in the first year of adjuvant aromatase inhibitor treatment in early breast cancer patients. Breast 2020; 50:11-18. [PMID: 31958661 PMCID: PMC7377331 DOI: 10.1016/j.breast.2019.12.017] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2019] [Revised: 12/30/2019] [Accepted: 12/31/2019] [Indexed: 12/25/2022] Open
Abstract
Background Patients with breast cancer (BC) show strong interest in complementary and alternative medicine (CAM), particularly for adverse effects of adjuvant endocrine treatment — e.g., with letrozole. Letrozole often induces myalgia/limb pain and arthralgia, with potential noncompliance and treatment termination. This analysis investigated whether CAM before aromatase inhibitor (AI) therapy is associated with pain development and the intensity of AI-induced musculoskeletal syndrome (AIMSS) during the first year of treatment. Patients and methods The multicenter phase IV PreFace study evaluated letrozole therapy in postmenopausal, hormone receptor–positive patients with early BC. Patients were asked about CAM use before, 6 months after, and 12 months after treatment started. They recorded pain every month for 1 year in a diary including questions about pain and numeric pain rating scales. Data were analyzed for patients who provided pain information for all time points. Results Of 1396 patients included, 901 (64.5%) had used CAM before AI treatment. Throughout the observation period, patients with CAM before AI treatment had higher pain values, for both myalgia/limb pain and arthralgia, than non-users. Pain increased significantly in both groups over time, with the largest increase during the first 6 months. No significant difference of pain increase was noted regarding CAM use. Conclusions CAM use does not prevent or improve the development of AIMSS. Pain intensity was generally greater in the CAM group. Therefore, because of the risk of non-compliance and treatment discontinuation due to the development of higher pain levels, special attention must be paid to patient education and aftercare in these patients. Pain levels of myalgia/limb pain and arthralgia increase under letrozole intake. Within one year pain levels increase in both, CAM users as well as non-CAM users. In CAM users pain levels were higher at all time points than in non-CAM users. The greatest increase of pain levels was noted in the first six treatment months. CAM does not prevent or improve the development of myalgia/limb pain and arthralgia.
Collapse
Affiliation(s)
- C C Hack
- Department of Gynecology, Erlangen University Hospital, Friedrich Alexander University of Erlangen-Nuremberg, Comprehensive Cancer Center Erlangen-EMN, Erlangen, Germany
| | - L Häberle
- Department of Gynecology, Erlangen University Hospital, Friedrich Alexander University of Erlangen-Nuremberg, Comprehensive Cancer Center Erlangen-EMN, Erlangen, Germany; Biostatistics Unit, Department of Gynecology, Erlangen University Hospital, Erlangen, Germany
| | - S Y Brucker
- Department of Gynecology, University of Tübingen, Tübingen, Germany
| | - W Janni
- Department of Gynecology, Ulm University Hospital, Ulm, Germany
| | - B Volz
- Department of Gynecology, Erlangen University Hospital, Friedrich Alexander University of Erlangen-Nuremberg, Comprehensive Cancer Center Erlangen-EMN, Erlangen, Germany
| | - C R Loehberg
- Department of Gynecology, Erlangen University Hospital, Friedrich Alexander University of Erlangen-Nuremberg, Comprehensive Cancer Center Erlangen-EMN, Erlangen, Germany; St. Theresien Hospital, Nuremberg, Germany
| | - A D Hartkopf
- Department of Gynecology, University of Tübingen, Tübingen, Germany
| | - C-B Walter
- Department of Gynecology, University of Tübingen, Tübingen, Germany
| | - G Baake
- Oncological Medical Practice Pinneberg, Pinneberg, Germany
| | - A Fridman
- Breast Center, Department of Obstetrics and Gynecology, University of Cologne Hospital, Cologne, Germany; Evangelisches Krankenhaus Kalk, Cologne, Germany
| | - W Malter
- Breast Center, Department of Obstetrics and Gynecology, University of Cologne Hospital, Cologne, Germany
| | - R Wuerstlein
- Breast Center, Department of Obstetrics and Gynecology, University of Cologne Hospital, Cologne, Germany; Breast Center, Department of Gynecology and Obstetrics and CCC Munich, University of Munich (LMU), Munich, Germany
| | - N Harbeck
- Breast Center, Department of Obstetrics and Gynecology, University of Cologne Hospital, Cologne, Germany; Breast Center, Department of Gynecology and Obstetrics and CCC Munich, University of Munich (LMU), Munich, Germany
| | - O Hoffmann
- Department of Gynecology, Essen University Hospital, Essen, Germany
| | - S Kuemmel
- Breast Unit, Essen Mitte Clinics, Evang. Huyssens-Stiftung/Knappschaft GmbH, Essen, Germany
| | - B Martin
- Tuttlingen Clinic, Tuttlingen, Germany
| | - C Thomssen
- Department of Gynecology, Martin Luther University of Halle-Wittenberg, Halle (Saale), Germany
| | - H Graf
- Helios Clinics Meiningen, Meiningen, Germany
| | - C Wolf
- Ulm Medical Center, Ulm, Germany
| | - M P Lux
- Department of Gynecology, Erlangen University Hospital, Friedrich Alexander University of Erlangen-Nuremberg, Comprehensive Cancer Center Erlangen-EMN, Erlangen, Germany
| | - C M Bayer
- Department of Gynecology, Erlangen University Hospital, Friedrich Alexander University of Erlangen-Nuremberg, Comprehensive Cancer Center Erlangen-EMN, Erlangen, Germany
| | - C Rauh
- Department of Gynecology, Erlangen University Hospital, Friedrich Alexander University of Erlangen-Nuremberg, Comprehensive Cancer Center Erlangen-EMN, Erlangen, Germany
| | - K Almstedt
- Department of Gynecology, Erlangen University Hospital, Friedrich Alexander University of Erlangen-Nuremberg, Comprehensive Cancer Center Erlangen-EMN, Erlangen, Germany; Department of Gynecology, Mainz University Hospital, Mainz, Germany
| | - P Gass
- Department of Gynecology, Erlangen University Hospital, Friedrich Alexander University of Erlangen-Nuremberg, Comprehensive Cancer Center Erlangen-EMN, Erlangen, Germany
| | - F Heindl
- Department of Gynecology, Erlangen University Hospital, Friedrich Alexander University of Erlangen-Nuremberg, Comprehensive Cancer Center Erlangen-EMN, Erlangen, Germany
| | - T Brodkorb
- Department of Gynecology, Erlangen University Hospital, Friedrich Alexander University of Erlangen-Nuremberg, Comprehensive Cancer Center Erlangen-EMN, Erlangen, Germany
| | - L Willer
- Department of Gynecology, Erlangen University Hospital, Friedrich Alexander University of Erlangen-Nuremberg, Comprehensive Cancer Center Erlangen-EMN, Erlangen, Germany
| | - C Lindner
- Agaplesion Diakonie Clinic Hamburg, Hamburg, Germany
| | - H-C Kolberg
- Department of Gynecology and Obstetrics, Marienhospital Bottrop, Bottrop, Germany
| | - P Krabisch
- Department of Gynecology, Klinikum Chemnitz gGmbH, Chemnitz, Germany
| | - M Weigel
- Department of Gynecology, Leopoldina Hospital Schweinfurt, Schweinfurt, Germany
| | - D Steinfeld-Birg
- Gynecologic Onocologic Practice Steinfeld-Birg, Augsburg, Germany
| | - A Kohls
- Protestant County Hospital of Ludwigsfelde-Teltow, Ludwigsfelde-Teltow, Germany
| | - C Brucker
- Department of Gynecology and Obstetrics, Nuremberg General Hospital, Paracelsus Medical University, Nuremberg, Germany
| | - V Schulz
- Gynecologic Practice Abts+partner, Kiel, Germany
| | - G Fischer
- Mittweida Hospital gGmbH, Mittweida, Germany
| | - V Pelzer
- Department of Gynecology, GFO Clinics Bonn, Bonn, Germany
| | - B Rack
- Department of Gynecology, Ulm University Hospital, Ulm, Germany
| | - M W Beckmann
- Department of Gynecology, Erlangen University Hospital, Friedrich Alexander University of Erlangen-Nuremberg, Comprehensive Cancer Center Erlangen-EMN, Erlangen, Germany
| | - T Fehm
- Department of Gynecology, University of Tübingen, Tübingen, Germany; Department of Gynecology, Heinrich Heine University of Dusseldorf, Dusseldorf, Germany
| | - A Rody
- Department of Gynecology, Campus Lübeck, Schleswig-Holstein University Hospital, Schleswig-Holstein, Germany
| | - N Maass
- Department of Gynecology, Campus Kiel, Schleswig-Holstein University Hospital, Schleswig-Holstein, Germany
| | - A Hein
- Department of Gynecology, Erlangen University Hospital, Friedrich Alexander University of Erlangen-Nuremberg, Comprehensive Cancer Center Erlangen-EMN, Erlangen, Germany
| | - P A Fasching
- Department of Gynecology, Erlangen University Hospital, Friedrich Alexander University of Erlangen-Nuremberg, Comprehensive Cancer Center Erlangen-EMN, Erlangen, Germany.
| | - N Nabieva
- Department of Gynecology, Erlangen University Hospital, Friedrich Alexander University of Erlangen-Nuremberg, Comprehensive Cancer Center Erlangen-EMN, Erlangen, Germany
| |
Collapse
|
6
|
Tesch H, Loibl S, Kast K, Jackisch C, Möbus V, Buchen S, Untch M, Hanusch C, Seiler S, Weigel M, Fasching P, Rhiem K, Huober J, Blohmer JU, Solbach C, Denkert C, Nekljudova V, Link T, Schneeweiss A. Chemotherapy (CT)-induced anaemia in patients (pts) treated with dose-dense regimen: Results of the prospectively randomised anaemia substudy from the neoadjuvant GeparOcto study. Ann Oncol 2019. [DOI: 10.1093/annonc/mdz240.020] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
|
7
|
Tsagkas C, Horvath A, Altermatt A, Pezold S, Weigel M, Haas T, Amann M, Kappos L, Sprenger T, Bieri O, Cattin P, Parmar K. Automatic Spinal Cord Gray Matter Quantification: A Novel Approach. AJNR Am J Neuroradiol 2019; 40:1592-1600. [PMID: 31439628 DOI: 10.3174/ajnr.a6157] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2018] [Accepted: 06/25/2019] [Indexed: 12/12/2022]
Abstract
BACKGROUND AND PURPOSE Currently, accurate and reproducible spinal cord GM segmentation remains challenging and a noninvasive broadly accepted reference standard for spinal cord GM measurements is still a matter of ongoing discussion. Our aim was to assess the reproducibility and accuracy of cervical spinal cord GM and WM cross-sectional area measurements using averaged magnetization inversion recovery acquisitions images and a fully-automatic postprocessing segmentation algorithm. MATERIALS AND METHODS The cervical spinal cord of 24 healthy subjects (14 women; mean age, 40 ± 11 years) was scanned in a test-retest fashion on a 3T MR imaging system. Twelve axial averaged magnetization inversion recovery acquisitions slices were acquired over a 48-mm cord segment. GM and WM were both manually segmented by 2 experienced readers and compared with an automatic variational segmentation algorithm with a shape prior modified for 3D data with a slice similarity prior. Precision and accuracy of the automatic method were evaluated using coefficients of variation and Dice similarity coefficients. RESULTS The mean GM area was 17.20 ± 2.28 mm2 and the mean WM area was 72.71 ± 7.55 mm2 using the automatic method. Reproducibility was high for both methods, while being better for the automatic approach (all mean automatic coefficients of variation, ≤4.77%; all differences, P < .001). The accuracy of the automatic method compared with the manual reference standard was excellent (mean Dice similarity coefficients: 0.86 ± 0.04 for GM and 0.90 ± 0.03 for WM). The automatic approach demonstrated similar coefficients of variation between intra- and intersession reproducibility as well as among all acquired spinal cord slices. CONCLUSIONS Our novel approach including the averaged magnetization inversion recovery acquisitions sequence and a fully-automated postprocessing segmentation algorithm demonstrated an accurate and reproducible spinal cord GM and WM segmentation. This pipeline is promising for both the exploration of longitudinal structural GM changes and application in clinical settings in disorders affecting the spinal cord.
Collapse
Affiliation(s)
- C Tsagkas
- From the Neurologic Clinic and Policlinic (C.T., M.A., L.K., T.S., K.P.), Department of Medicine and Biomedical Engineering.,Translational Imaging in Neurology Basel (C.T., A.A., M.A., M.W., L.K., K.P.), Department of Medicine and Biomedical Engineering.,Medical Image Analysis Center (C.T., A.A., M.A.), Basel, Switzerland
| | - A Horvath
- Department of Biomedical Engineering (A.H., A.A., S.P., M.W., O.B., P.C.), University of Basel, Allschwil, Switzerland
| | - A Altermatt
- Translational Imaging in Neurology Basel (C.T., A.A., M.A., M.W., L.K., K.P.), Department of Medicine and Biomedical Engineering.,Medical Image Analysis Center (C.T., A.A., M.A.), Basel, Switzerland.,Department of Biomedical Engineering (A.H., A.A., S.P., M.W., O.B., P.C.), University of Basel, Allschwil, Switzerland
| | - S Pezold
- Department of Biomedical Engineering (A.H., A.A., S.P., M.W., O.B., P.C.), University of Basel, Allschwil, Switzerland
| | - M Weigel
- Translational Imaging in Neurology Basel (C.T., A.A., M.A., M.W., L.K., K.P.), Department of Medicine and Biomedical Engineering.,Division of Radiological Physics (M.W., T.H., O.B.), Department of Radiology.,Department of Biomedical Engineering (A.H., A.A., S.P., M.W., O.B., P.C.), University of Basel, Allschwil, Switzerland
| | - T Haas
- Division of Radiological Physics (M.W., T.H., O.B.), Department of Radiology
| | - M Amann
- From the Neurologic Clinic and Policlinic (C.T., M.A., L.K., T.S., K.P.), Department of Medicine and Biomedical Engineering.,Translational Imaging in Neurology Basel (C.T., A.A., M.A., M.W., L.K., K.P.), Department of Medicine and Biomedical Engineering.,Division of Diagnostic and Interventional Neuroradiology (M.A.), Department of Radiology, University Hospital Basel, University of Basel, Basel, Switzerland.,Medical Image Analysis Center (C.T., A.A., M.A.), Basel, Switzerland
| | - L Kappos
- From the Neurologic Clinic and Policlinic (C.T., M.A., L.K., T.S., K.P.), Department of Medicine and Biomedical Engineering.,Translational Imaging in Neurology Basel (C.T., A.A., M.A., M.W., L.K., K.P.), Department of Medicine and Biomedical Engineering
| | - T Sprenger
- From the Neurologic Clinic and Policlinic (C.T., M.A., L.K., T.S., K.P.), Department of Medicine and Biomedical Engineering.,Department of Neurology (T.S.), DKD HELIOS Klinik, Wiesbaden, Germany
| | - O Bieri
- Division of Radiological Physics (M.W., T.H., O.B.), Department of Radiology.,Department of Biomedical Engineering (A.H., A.A., S.P., M.W., O.B., P.C.), University of Basel, Allschwil, Switzerland
| | - P Cattin
- Department of Biomedical Engineering (A.H., A.A., S.P., M.W., O.B., P.C.), University of Basel, Allschwil, Switzerland
| | - K Parmar
- From the Neurologic Clinic and Policlinic (C.T., M.A., L.K., T.S., K.P.), Department of Medicine and Biomedical Engineering .,Translational Imaging in Neurology Basel (C.T., A.A., M.A., M.W., L.K., K.P.), Department of Medicine and Biomedical Engineering
| |
Collapse
|
8
|
Hass HG, Seywald M, Wöckel A, Flentje M, Weigel M, Beckmann MW, Kunzmann V. Clinical and histopathological differences between premenopausal and postmenopausal ER+ breast cancer. Geburtshilfe Frauenheilkd 2018. [DOI: 10.1055/s-0038-1671526] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022] Open
Affiliation(s)
- HG Hass
- Paracelsus-Klinik, Scheidegg, Deutschland
- Praxis für Onkologie und Hämatologie Westallgäu, Scheidegg, Deutschland
| | - M Seywald
- Paracelsus-Klinik, Scheidegg, Deutschland
| | - A Wöckel
- Frauenklinik Universität Würzburg, Würzburg, Deutschland
| | - M Flentje
- Klinik und Poliklinik für Strahlentherapie, Universität Würzburg, Würzburg, Deutschland
| | - M Weigel
- Frauenklinik Leopoldina, Schweinfurt, Deutschland
| | - MW Beckmann
- Frauenklinik Universität Erlangen, Erlangen, Deutschland
| | - V Kunzmann
- Medizinische Klinik und Poliklinik 2, Universität Würzburg, Würzburg, Deutschland
| |
Collapse
|
9
|
Hass HG, Seywald M, Wöckel A, Flentje M, Weigel M, Beckmann MW, Kunzmann V. Prognostic value of Ki67 labelling index in different subtypes of invasive breast cancer. Geburtshilfe Frauenheilkd 2018. [DOI: 10.1055/s-0038-1671527] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022] Open
Affiliation(s)
- HG Hass
- Paracelsus-Klinik, Scheidegg, Deutschland
- Praxis für Onkologie und Hämatologie Westallgäu, Scheidegg, Deutschland
| | - M Seywald
- Paracelsus-Klinik, Scheidegg, Deutschland
| | - A Wöckel
- Frauenklinik Universität Würzburg, Würzburg, Deutschland
| | - M Flentje
- Klinik und Poliklinik für Strahlentherapie, Universität Würzburg, Würzburg, Deutschland
| | - M Weigel
- Frauenklinik Leopoldina, Schweinfurt, Deutschland
| | - MW Beckmann
- Frauenklinik Universität Erlangen, Erlangen, Deutschland
| | - V Kunzmann
- Medizinische Klinik und Poliklinik 2, Universität Würzburg, Würzburg, Deutschland
| |
Collapse
|
10
|
Hass HG, Seywald M, Wöckel A, Flentje M, Weigel M, Beckmann MW, Kunzmann V. Early and late Toxicity and side effects with relevance for social medicine in patients with breast cancer – Time-dependent analysis of 5800 breast cancer patients. Geburtshilfe Frauenheilkd 2018. [DOI: 10.1055/s-0038-1671648] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022] Open
Affiliation(s)
- HG Hass
- Paracelsus-Klinik, Scheidegg, Deutschland
- Praxis für Onkologie und Hämatologie Westallgäu, Scheidegg, Deutschland
| | - M Seywald
- Paracelsus-Klinik, Scheidegg, Deutschland
| | - A Wöckel
- Frauenklinik Universität Würzburg, Würzburg, Deutschland
| | - M Flentje
- Klinik und Poliklinik für Strahlentherapie, Universität Würzburg, Würzburg, Deutschland
| | - M Weigel
- Frauenklinik Leopoldina, Schweinfurt, Deutschland
| | - MW Beckmann
- Frauenklinik Universität Erlangen, Erlangen, Deutschland
| | - V Kunzmann
- Medizinische Klinik und Poliklinik 2, Universität Würzburg, Würzburg, Deutschland
| |
Collapse
|
11
|
Pasternak J, Dröge LA, Kommoss S, Harter P, Brucker SY, Mustea A, Strauss A, Christensen B, Weigel M, Ringsdorf U, Jordan J, Sehouli J. Lymphonodektomie in der operativen Behandlung gynäkologischer Sarkome: Auswertung einer Umfrage zur Behandlungspraxis im Rahmen des REGSA Studienregisters. Geburtshilfe Frauenheilkd 2018. [DOI: 10.1055/s-0038-1671353] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022] Open
Affiliation(s)
- J Pasternak
- Universitätsfrauenklinik Tübingen, Tübingen, Deutschland
| | - LA Dröge
- Klinik für Gynäkologie mit Zentrum für onkologische Chirurgie Charité Campus Virchow-Klinikum, Berlin, Deutschland
| | - S Kommoss
- Universitätsfrauenklinik Tübingen, Tübingen, Deutschland
| | - P Harter
- Klinik für Gynäkologie & Gynäkologischer Onkologie, Kliniken Essen-Mitte, Essen, Deutschland
| | - SY Brucker
- Universitätsfrauenklinik Tübingen, Tübingen, Deutschland
| | - A Mustea
- Klinik und Poliklinik für Frauenheilkunde und Geburtshilfe, Universitätsmedizin Greifswald, Greifswald, Deutschland
| | - A Strauss
- Klinik für Gynäkologie und Geburtshilfe, Universität Kiel, Kiel, Deutschland
| | - B Christensen
- Klinik für Gynäkologie und Geburtshilfe, Ruppiner Kliniken, Neuruppin, Deutschland
| | - M Weigel
- Klinik für Frauenheilkunde und Geburtshilfe, Leopoldina Krankenhaus, Schweinfurt, Deutschland
| | - U Ringsdorf
- Gynäkologisches Tumorzentrum Lahn-Dill, Wetzlar, Deutschland
| | - J Jordan
- Klinik für Gynäkologie mit Zentrum für onkologische Chirurgie Charité Campus Virchow-Klinikum, Berlin, Deutschland
| | - J Sehouli
- Klinik für Gynäkologie mit Zentrum für onkologische Chirurgie Charité Campus Virchow-Klinikum, Berlin, Deutschland
| |
Collapse
|
12
|
Fytas NG, Zierenberg J, Theodorakis PE, Weigel M, Janke W, Malakis A. Universality from disorder in the random-bond Blume-Capel model. Phys Rev E 2018; 97:040102. [PMID: 29758610 DOI: 10.1103/physreve.97.040102] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2017] [Indexed: 01/23/2023]
Abstract
Using high-precision Monte Carlo simulations and finite-size scaling we study the effect of quenched disorder in the exchange couplings on the Blume-Capel model on the square lattice. The first-order transition for large crystal-field coupling is softened to become continuous, with a divergent correlation length. An analysis of the scaling of the correlation length as well as the susceptibility and specific heat reveals that it belongs to the universality class of the Ising model with additional logarithmic corrections which is also observed for the Ising model itself if coupled to weak disorder. While the leading scaling behavior of the disordered system is therefore identical between the second-order and first-order segments of the phase diagram of the pure model, the finite-size scaling in the ex-first-order regime is affected by strong transient effects with a crossover length scale L^{*}≈32 for the chosen parameters.
Collapse
Affiliation(s)
- N G Fytas
- Applied Mathematics Research Centre, Coventry University, Coventry CV1 5FB, United Kingdom
| | - J Zierenberg
- Institut für Theoretische Physik, Universität Leipzig, Postfach 100 920, 04009 Leipzig, Germany.,Max Planck Institute for Dynamics and Self-Organization, 37077 Göttingen, Germany.,Bernstein Center for Computational Neuroscience, 37077 Göttingen, Germany
| | - P E Theodorakis
- Institute of Physics, Polish Academy of Sciences, Al. Lotników 32/46, 02-668 Warsaw, Poland
| | - M Weigel
- Applied Mathematics Research Centre, Coventry University, Coventry CV1 5FB, United Kingdom
| | - W Janke
- Institut für Theoretische Physik, Universität Leipzig, Postfach 100 920, 04009 Leipzig, Germany
| | - A Malakis
- Applied Mathematics Research Centre, Coventry University, Coventry CV1 5FB, United Kingdom.,Department of Physics, Section of Solid State Physics, University of Athens, Panepistimiopolis, GR 15784 Zografou, Greece
| |
Collapse
|
13
|
Balogun A, Armijos R, Weigel M, Cevallos W, Sanchez X, Puebla E, Rodriguez R. Epidemiology of Cutaneous Leishmaniasis in an Endemic Pacific Coastal
Rainforest Area of Ecuador. Ann Glob Health 2017. [DOI: 10.1016/j.aogh.2017.03.133] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
|
14
|
Obeng-Gyasi E, Weigel M, Armijos R, Cevallos W, Sanchez X, Puebla E. Traditional and Conventional Treatment for Cutaneous Leishmaniasis in an
Endemic Rainforest Area of Northern Ecuador. Ann Glob Health 2017. [DOI: 10.1016/j.aogh.2017.03.358] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022] Open
|
15
|
Wang Y, Armijos R, Weigel M, Balogun A, Sorocco T, Cevallos W, Sanchez X, Puebla E, Rodriguez R. Diagnosis of Cutaneous Leishmaniasis using Microscopic Detection and
Molecular-based PCR Assay Techniques. Ann Glob Health 2017. [DOI: 10.1016/j.aogh.2017.03.374] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
|
16
|
von Minckwitz G, Loibl S, Untch M, Eidtmann H, Rezai M, Fasching PA, Tesch H, Eggemann H, Schrader I, Kittel K, Hanusch C, Huober J, Solbach C, Jackisch C, Kunz G, Blohmer JU, Hauschild M, Fehm T, Nekljudova V, Gerber B, Gnauert K, Heinrich B, Prätz T, Groh U, Tanzer H, Villena C, Tulusan A, Liedtke B, Blohmer JU, Kittel K, Mau C, Potenberg J, Schilling J, Just M, Weiss E, Bückner U, Wolfgarten M, Lorenz R, Doering G, Feidicker S, Krabisch P, Deichert U, Augustin D, Kunz G, Kast K, von Minckwitz G, Nestle-Krämling C, Rezai M, Höß C, Terhaag J, Fasching P, Staib P, Aktas B, Kühn T, Khandan F, Möbus V, Solbach C, Tesch H, Stickeler E, Heinrich G, Wagner H, Abdallah A, Dewitz T, Emons G, Belau A, Rethwisch V, Lantzsch T, Thomssen C, Mattner U, Nugent A, Müller V, Noesselt T, Holms F, Müller T, Deuker JU, Schrader I, Strumberg D, Uleer C, Solomayer E, Runnebaum I, Link H, Tomé O, Ulmer HU, Conrad B, Feisel-Schwickardi G, Eidtmann H, Schumacher C, Steinmetz T, Bauerfeind I, Kremers S, Langanke D, Kullmer U, Ober A, Fischer D, Kohls A, Weikel W, Bischoff J, Freese K, Schmidt M, Wiest W, Sütterlin M, Dietrich M, Grießhammer M, Burgmann DM, Hanusch C, Rack B, Salat C, Sattler D, Tio J, von Abel E, Christensen B, Burkamp U, Köhne CH, Meinerz W, Graßhoff ST, Decker T, Overkamp F, Thalmann I, Sallmann A, Beck T, Reimer T, Bartzke G, Deryal M, Weigel M, Huober J, Weder P, Steffens CC, Lemster S, Stefek A, Ruhland F, Hofmann M, Schuster J, Simon W, Kronawitter U, Clemens M, Fehm T, Janni W, Latos K, Bauer W, Roßmann A, Bauer L, Lampe D, Heyl V, Hoffmann G, Lorenz-Salehi F, Hackmann J, Schlag R. Survival after neoadjuvant chemotherapy with or without bevacizumab or everolimus for HER2-negative primary breast cancer (GBG 44-GeparQuinto)†. Ann Oncol 2014; 25:2363-2372. [PMID: 25223482 DOI: 10.1093/annonc/mdu455] [Citation(s) in RCA: 97] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
BACKGROUND The GeparQuinto study showed that adding bevacizumab to 24 weeks of anthracycline-taxane-based neoadjuvant chemotherapy increases pathological complete response (pCR) rates overall and specifically in patients with triple-negative breast cancer (TNBC). No difference in pCR rate was observed for adding everolimus to paclitaxel in nonearly responding patients. Here, we present disease-free (DFS) and overall survival (OS) analyses. PATIENTS AND METHODS Patients (n = 1948) with HER2-negative tumors of a median tumor size of 4 cm were randomly assigned to neoadjuvant treatment with epirubicin/cyclophosphamide followed by docetaxel (EC-T) with or without eight infusions of bevacizumab every 3 weeks before surgery. Patients without clinical response to EC ± Bevacizumab were randomized to 12 weekly cycles paclitaxel with or without everolimus 5 mg/day. To detect a hazard ratio (HR) of 0.75 (α = 0.05, β = 0.8) 379 events had to be observed in the bevacizumab arms. RESULTS With a median follow-up of 3.8 years, 3-year DFS was 80.8% and 3-year OS was 89.7%. Outcome was not different for patients receiving bevacizumab (HR 1.03; P = 0.784 for DFS and HR 0.974; P = 0.842 for OS) compared with patients receiving chemotherapy alone. Patients with TNBC similarly showed no improvement in DFS (HR = 0.99; P = 0.941) and OS (HR = 1.02; P = 0.891) when treated with bevacizumab. No other predefined subgroup (HR+/HER2-; locally advanced (cT4 or cN3) or not; cT1-3 or cT4; pCR or not) showed a significant benefit. No difference in DFS (HR 0.997; P = 0.987) and OS (HR 1.11; P = 0.658) was observed for nonearly responding patients receiving paclitaxel with or without everolimus overall as well as in subgroups. CONCLUSIONS Long-term results, in opposite to the results of pCR, do not support the neoadjuvant use of bevacizumab in addition to an anthracycline-taxane-based chemotherapy or everolimus in addition to paclitaxel for nonearly responding patients. CLINICAL TRIAL NUMBER NCT 00567554, www.clinicaltrials.gov.
Collapse
Affiliation(s)
- G von Minckwitz
- Headquarter, German Breast Group, Neu-Isenburg; Department of Gynaecology and Obstetrics, University Hospital, Frankfurt.
| | - S Loibl
- Headquarter, German Breast Group, Neu-Isenburg
| | - M Untch
- Department of Gynaecology and Obstetrics, Klinikum Berlin-Buch, Berlin
| | - H Eidtmann
- Department of Gynaecology and Obstetrics, University Hospital, Kiel
| | - M Rezai
- Breast Center, Luisenkrankenhaus, Düsseldorf
| | - P A Fasching
- Department of Gynaecology and Obstetrics, University Hospital, Erlangen
| | - H Tesch
- Department of Medical Oncology, Chop GmbH, Frankfurt
| | - H Eggemann
- Department of Gynaecology and Obstetrics, University Hospital, Magdeburg
| | - I Schrader
- Department of Gynaecology and Obstetrics, Henriettenstiftung, Hannover
| | - K Kittel
- Department of Gynaecology and Obstetrics, Praxisklinik, Berlin
| | - C Hanusch
- Department of Gynaecology and Obstetrics, Rot-Kreuz-Klinikum, München
| | - J Huober
- Department of Gynaecology and Obstetrics, University Hospital, Ulm
| | - C Solbach
- Department of Gynaecology and Obstetrics, University Hospital, Frankfurt
| | - C Jackisch
- Department of Gynaecology and Obstetrics, Sana-Klinikum, Offenbach
| | - G Kunz
- Department of Gynaecology and Obstetrics, St Johannes Hospital, Dortmund
| | - J U Blohmer
- Department of Gynaecology and Obstetrics, St Gertrauden-Hospital, Berlin
| | - M Hauschild
- Department of Gynaecology and Obstetrics, Hospital, Rheinfelden
| | - T Fehm
- Department of Gynaecology and Obstetrics, University Hospital, Tübingen
| | | | - B Gerber
- Department of Gynaecology and Obstetrics, University Hospital, Rostock, Germany
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
17
|
Weigel M, Riester A, Hanslik G, Lang K, Endres S, Allolio B, Beuschlein F, Reincke M, Quinkler M. Post saline infusion test aldosterone levels indicate severity and outcome in primary aldosteronism. Exp Clin Endocrinol Diabetes 2014. [DOI: 10.1055/s-0034-1372083] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
|
18
|
Weigel M, Wecke T, Thieme H. Suturolyse - postoperative Intervention nach Trabkulektomie. Klin Monbl Augenheilkd 2013. [DOI: 10.1055/s-0033-1357774] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
|
19
|
Mundhenke C, Schem C, Bauerschlag D, Weigel M, Tiemann K, Maass N, Jonat W. Imatinib Mesylat in Kombination mit Vinorelbine bei metastasiertem Mammakarzinom – Ein erster Bericht zur Durchführung der Phase I/II Studie. Geburtshilfe Frauenheilkd 2011. [DOI: 10.1055/s-0031-1286455] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022] Open
|
20
|
Schmidt J, Bruns R, Rautmann C, Stock-Schröer B, Weigel M, Hoffmann W. Pediatricians in private practice and their attitude towards vaccination: A comparison between homeopaths and non-homeopaths. Eur J Integr Med 2010. [DOI: 10.1016/j.eujim.2010.09.134] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
21
|
Hoffmann W, Rautmann C, Weigel M, Schmidt J, Bruns R, Weitmann K. Multivariate Analyse des Impfverhaltens von Hausärzten in einer deutschlandweit-repräsentativen Querschnittsstudie: Ost-West-Vergleich und Anwendung alternativer Methoden. Gesundheitswesen 2010. [DOI: 10.1055/s-0030-1266279] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
|
22
|
Weigel M, Schwenk S, Kiselev VG, Scheffler K, Hennig J. Extended phase graphs with anisotropic diffusion. J Magn Reson 2010; 205:276-285. [PMID: 20542458 DOI: 10.1016/j.jmr.2010.05.011] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/09/2010] [Revised: 05/17/2010] [Accepted: 05/17/2010] [Indexed: 05/29/2023]
Abstract
The extended phase graph (EPG) calculus gives an elegant pictorial description of magnetization response in multi-pulse MR sequences. The use of the EPG calculus enables a high computational efficiency for the quantitation of echo intensities even for complex sequences with multiple refocusing pulses with arbitrary flip angles. In this work, the EPG concept dealing with RF pulses with arbitrary flip angles and phases is extended to account for anisotropic diffusion in the presence of arbitrary varying gradients. The diffusion effect can be expressed by specific diffusion weightings of individual magnetization pathways. This can be represented as an action of a linear operator on the magnetization state. The algorithm allows easy integration of diffusion anisotropy effects. The formalism is validated on known examples from literature and used to calculate the effective diffusion weighting in multi-echo sequences with arbitrary refocusing flip angles.
Collapse
Affiliation(s)
- M Weigel
- University Hospital Freiburg, Department of Radiology, Medical Physics, Breisacher Strasse 60a, 79106 Freiburg, Germany.
| | | | | | | | | |
Collapse
|
23
|
Bauerschlag DO, Habermann M, Weimer J, Meinhold-Heerlein I, Hilpert F, Weigel M, Bauer M, Mundhenke C, Jonat W, Maass N, Schem C. Heterogeneous expression of serine protease inhibitor maspin in ovarian cancer. Anticancer Res 2010; 30:2739-2744. [PMID: 20683007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
UNLABELLED Ovarian cancer (OC) is a disease with poor prognosis, and molecular markers are needed to improve understanding of disease progression and resultant treatment. Only limited data concerning the expression of maspin, a serine protease inhibitor, in ovarian cancer (OC) are available. This study investigates the prognostic value of maspin expression (ME) in various OC cell lines and clinical tissue specimens from OC patients. PATIENTS AND METHODS Tumour purified mouse anti-human maspin monoclonal antibody was applied to tissue specimens from 87 OC patients. ME was recorded by an immunoreactive score, which was correlated with grading, stage, histopathological subtypes and overall survival. Additionally ME was evaluated in established ovarian cancer cell lines (HEY, SKOV3, OVCAR3/8) and paclitaxel- and docetaxel-resistant HEY cells by QRT-PCR. RESULTS There was significant correlation between cytoplasmatic ME and overall survival (p<0.05). OC patients with high levels of ME had a median survival of 28 vs. 57 months for those with low levels. Significant differential ME was detected between benign, borderline ovarian lesions and OC, as well as among different tumour gradings. Normal ovarian epithelial cells expressed less maspin than ovarian cancer cells as measured by QRT-PCR. Docetaxel- and paclitaxel-resistant ovarian cell lines showed an even higher level of ME, suggesting an unfavourable role of ME in OC cell lines. CONCLUSION Maspin is expressed differentially in OC, and low expression levels of maspin are correlated with a longer survival.
Collapse
Affiliation(s)
- D O Bauerschlag
- Department of Obstetrics and Gynecology, University Hospital Aachen, RWTH, 52074 Aachen, Germany
| | | | | | | | | | | | | | | | | | | | | |
Collapse
|
24
|
Tandler-Schneider A, Sonnenberg-Schwan U, Gingelmaier A, Meurer A, Kremer H, Weigel M, Vernazza P, Schmied B, Klumb S, Schafberger A, Friese K, Brockmeyer NH. [Diagnostic and treatment of HIV-affected couples who wish to have children]. Dtsch Med Wochenschr 2009; 134 Suppl 1:S34-9. [PMID: 19172553 DOI: 10.1055/s-0028-1123967] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- A Tandler-Schneider
- Die Empfehlungen wurden verabschiedet von der Deutschen AIDS-Gesellschaft (DAIG e. V.).
| | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
25
|
Tandler-Schneider A, Sonnenberg-Schwan U, Gingelmaier A, Meurer A, Kremer H, Weigel M, Vernazza P, Schmied B, Klumb S, Schafberger A, Kupka M, Friese K, Brockmeyer NH. Diagnostics and treatment of HIV-affected couples who wish to have children. Eur J Med Res 2008; 13:546-551. [PMID: 19073393] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/27/2023] Open
Affiliation(s)
- A Tandler-Schneider
- Klinik für Dermatologie und Allergologie der Ruhr-Universität, Gudrunstr. 56, 44791 Bochum, Germany
| | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
26
|
Müller D, Gentili M, Weigel M, Sütterlin M. Ist die Spermaqualität HIV-infizierter Männer mit Kinderwunsch durch die Antiretrovirale Therapie verschlechtert? Geburtshilfe Frauenheilkd 2008. [DOI: 10.1055/s-0028-1088881] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022] Open
|
27
|
Bauerschlag DO, Schem C, Tiwari S, Meinhold-Heerlein I, Mundhenke C, Weigel M, Egberts JH, Kalthoff H, Jonat W, Maass N. SU11248 (Sunitinib) does inhibit tumor growth and angiogenesis in an ovarian cancer murine xenograft model. J Clin Oncol 2008. [DOI: 10.1200/jco.2008.26.15_suppl.16557] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
|
28
|
Mundhenke C, Niehoff P, Weber K, Weigel M, Bauerschlag DO, Schem C, Bauer M, Jonat W, Maass N. Effects of tamoxifen and imatinib on the radiosensitivity of breast carcinoma cells. J Clin Oncol 2008. [DOI: 10.1200/jco.2008.26.15_suppl.14639] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
|
29
|
Müller D, Gentili M, Weigel M, Sütterlin M. Untersuchungen zu Spermaqualität HIV-infizierter Männer mit Kinderwunsch. Geburtshilfe Frauenheilkd 2008. [DOI: 10.1055/s-2008-1079245] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
|
30
|
Tetzlaff RH, Mader I, Küker W, Weber J, Ziyeh S, Schulze-Bonhage A, Hennig J, Weigel M. Hyperecho-turbo spin-echo sequences at 3T: clinical application in neuroradiology. AJNR Am J Neuroradiol 2008; 29:956-61. [PMID: 18321987 DOI: 10.3174/ajnr.a0971] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
BACKGROUND AND PURPOSE Hyperecho-turbo spin-echo (hyperTSE) sequences were developed to reduce the specific absorption rate (SAR), especially at high fields such as 3T and above. The purpose of this study was to quantitatively and qualitatively assess the detection of neuroradiologic pathologies by hyperTSE in comparison with standard turbo spin-echo (TSE180 degrees) sequences. MATERIALS AND METHODS TSE180 degrees and hyperTSE images with parameters adapted for equal T2 contrast were acquired on a 3T whole-body system in 51 patients with 54 cerebral pathologies. Region-of-interest analysis was performed of signal intensities of pathologies, normal white and gray matter, CSF, and the SD of noise. Signal intensity-to-noise ratios (SNRs) and contrast-to-noise ratios (CNRs) for healthy tissues and pathologies were determined. A qualitative rating concerning artifacts, lesion conspicuity, and image quality was performed by 2 experienced neuroradiologists. RESULTS HyperTSE sequences were equivalent to standard TSE180 degrees sequences for the CNR of pathologies and of the contrast between gray and white matter. The SNR of gray and white matter and CSF were also the same. The CNRs of the pathologies in hyperTSE and TSE180 degrees images were strongly correlated with each other (r = 0.93, P = .001). The visual rating of images revealed no significant differences between hyperTSE and TSE180 degrees. CONCLUSION HyperTSE sequences proved to be qualitatively and quantitatively equivalent to TSE180 degrees sequences in the detection of high- and low-signal-intensity lesions. They provide equal CNR of pathologies and of gray minus white matter and reduce the imaging restrictions of conventional TSE180 degrees imposed by SAR limitations at 3T.
Collapse
Affiliation(s)
- R H Tetzlaff
- Department of Neuroradiology, Neurocenter of the University Hospital Freiburg, Freiburg, Germany
| | | | | | | | | | | | | | | |
Collapse
|
31
|
Munk RD, Bley TA, Gaggl M, Weigel M, Lagrèze W, Langer M. MRT-gestützte Quantifizierung der glaukomatösen Optikusatrophie. ROFO-FORTSCHR RONTG 2007. [DOI: 10.1055/s-2007-976920] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
|
32
|
Mundhenke C, Weigel M, Meinhold-Heerlein I, Bauerschlag D, Schem C, Jonat W, Maass N. Effekte von Imatinib auf die Biologie von Mammakarzinomzellen in vitro. Geburtshilfe Frauenheilkd 2006. [DOI: 10.1055/s-2006-952272] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
|
33
|
Mundhenke C, Weigel M, Meinhold-Heerlein I, Schem C, Bauerschlag DO, Jonat W, Maass N. Imatinib mesylate inhibits the growth of breast cancer cells mediated by PDGF-receptor-β and Akt inactivation. J Clin Oncol 2006. [DOI: 10.1200/jco.2006.24.18_suppl.20040] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
20040 Background: The prognosis of patients with progressed breast cancer remains poor after intensive chemotherapy. Therefore new treatment options such as targeted therapies are needed. Imatinib Mesylate is a tyrosin kinase inhibitor targeting growth receptors like PDGF-R α and β, c-kit. These receptors and their downstream effectors trigger a cascade that regulates multiple cellular processes such as proliferation, differentiation and survival. The activity of the important downstream effector Akt leads to cell survival through inhibition of pro-apoptotic signals. We therefore evaluated the effects of Imatinib on of PDGFR β and Akt activity in breast cancer cell lines in vitro. We previously detected that Imatinib inhibits the growth of the breast cancer cell lines MDA MB 231, MCF 7, ZR 75–1 and T 47-D in vitro. Furthermore Imatinib induces apoptosis in these cell lines. Methods: To investigate effects on receptor activation, cells were stimulated with PDGF BB, the physiological ligand of PDGFR β. Phosphorylation of PDGFR β and Akt was examined after incubation with increasing concentrations of Imatinib by immunohistochemical and western blot assays. Imatinib concentrations from 2 μM to 10 μM were applied. Results: Imatinib Mesylate shows a dose dependent inhibitory effect on PDGFR β phosphorylation, determined by immunohistochemistry and western blot analysis. No changes in the expression pattern occured. The phosphorylation of the tyrosine kinase Akt can also be inhibited by Imatinib in a dose dependent manner. The expression of Akt remains also unchanged. Conclusions: It can be suggested that the growth inhibitory effect of Imatinib Mesylate on breast cancer cell lines is caused by a dose dependent decrease of activation in PDGFR β and Akt. The inhibition of Akt phosphorylation by Imatinib explains the induction of apoptosis. These interesting effects should be further validated in vivo in clinical trials. [Table: see text]
Collapse
Affiliation(s)
| | | | | | - C. Schem
- University of Kiel, Kiel, Germany
| | | | - W. Jonat
- University of Kiel, Kiel, Germany
| | - N. Maass
- University of Kiel, Kiel, Germany
| |
Collapse
|
34
|
Bolling C, Graefe T, Lübbing C, Jankevicius F, Uktveris S, Cesas A, Meyer-Moldenhauer WH, Starkmann H, Weigel M, Burk K, Hanauske AR. Phase II study of MTX-HSA in combination with Cisplatin as first line treatment in patients with advanced or metastatic transitional cell carcinoma. Invest New Drugs 2006; 24:521-7. [PMID: 16699974 DOI: 10.1007/s10637-006-8221-6] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
PURPOSE To assess the efficacy, tolerability and safety of MTX-HSA (methotrexate (MTX) covalently linked to human serum albumin (HSA)) combined with cisplatin as first line therapy for advanced bladder cancer. METHODS Patients (pat) were treated with a loading dose of 110 mg/m(2) of MTX-HSA followed by a weekly dose of 40 mg/m(2) starting on day 8. Cisplatin was given on day 2 of each 28 day cycle at a dose of 75 mg/m(2). RESULTS Tumor response evaluation was possible in 7 patients. Complete response (CR) and partial response (PR) was observed in 1 patient each (overall response rate: 29%). Key toxicities included CTC Grade (G) 3/4 stomatitis in 6 patients, vomiting G3 in 1 patient, fatigue G3 in 1 patient and thrombocytopenia G3 in 3 patients. CONCLUSION The combination of MTX-HSA with cisplatin is feasible and shows antitumor activity against urothelial carcinomas combined with an acceptable toxicity profile.
Collapse
Affiliation(s)
- C Bolling
- Medizinische Abteilung, AK St. Georg, Lohmühlenstrasse 5, Hamburg 20099, Germany.
| | | | | | | | | | | | | | | | | | | | | |
Collapse
|
35
|
Honeck P, Weigel M, Kwon ST, Alken P, Bross S. Assisted procreation in cases of hepatitis B, hepatitis C or human immunodeficiency virus infection of the male partner. Hum Reprod 2005; 21:1117-21. [PMID: 16361281 DOI: 10.1093/humrep/dei459] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Guidelines for assisted procreation impose a special responsibility upon physicians for the health of the expected child because of their active role in inducing pregnancy. Therefore, careful clinical evaluation of both partners has to precede every application of these methods. Risks for the mother's health or the development of the child count as a relative contraindication for a treatment. To balance these relative contraindications, the existing risk factors have to be recognized through screening examination. If a chronic infection occurs in the male partner, prevention for the female partner is theoretically possible by using a condom. As this inhibits a pregnancy, at least in cases of human immunodeficiency virus and hepatitis C virus infections, realization of a pregnancy requires assisted procreation. The main question in these cases is whether infectious particles can be eliminated by sperm processing to ensure the safe treatment of the healthy female partner.
Collapse
Affiliation(s)
- P Honeck
- Department of Urology, University Hospital of Mannheim, Mannheim, Germany.
| | | | | | | | | |
Collapse
|
36
|
Gingelmaier A, Hollwitz B, Casteleyn S, Faul-Burbes C, Gröger S, Beichert M, Buchholz B, Weigel M, Funke AM, Grubert TA, Friese K. Schwangerschaftsverlauf und kindliches Outcome bei 599 HIV-exponierten Schwangerschaften an deutschen Schwerpunktzentren 1999 - 2003. Geburtshilfe Frauenheilkd 2005. [DOI: 10.1055/s-2005-872993] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022] Open
|
37
|
Fürstenberg NV, Weigel M, Schaible T, Melchert F. Problematik der pränatalen Diagnose bei der angeborenen Zwerchfellhernie. Geburtshilfe Frauenheilkd 2005. [DOI: 10.1055/s-2005-920827] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022] Open
|
38
|
Maass N, Mundhenke C, Weigel M, Jonat W. PDGF-beta und AKT vermittelte Wachstumshemmung von Mammakarzinomzellen durch Imatinib. Geburtshilfe Frauenheilkd 2005. [DOI: 10.1055/s-2005-920769] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022] Open
|
39
|
Mundhenke C, Weigel M, Schmidt SR, Meinhold-Heerlein I, Schem C, Bauerschlag DO, Jonat W, Maass N. Effects of imatinib on breast cancer cell biology in vitro. J Clin Oncol 2005. [DOI: 10.1200/jco.2005.23.16_suppl.3210] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Affiliation(s)
| | | | | | | | - C. Schem
- Univ of Kiel, OB/GYN, Kiel, Germany
| | | | - W. Jonat
- Univ of Kiel, OB/GYN, Kiel, Germany
| | - N. Maass
- Univ of Kiel, OB/GYN, Kiel, Germany
| |
Collapse
|
40
|
Maass N, Mundhenke C, Schmidt SR, Weigel M, Meinhold-Heerlein I, Schem C, Bauerschlag DO, Hilpert F, Jonat W. Identification of potential molecular targets for Imatinib mesylate induced growth inhibition in breast cancer cell lines. J Clin Oncol 2005. [DOI: 10.1200/jco.2005.23.16_suppl.3203] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Affiliation(s)
- N. Maass
- Univklin Schleswig-Holstein, Kiel, Germany
| | | | | | - M. Weigel
- Univklin Schleswig-Holstein, Kiel, Germany
| | | | - C. Schem
- Univklin Schleswig-Holstein, Kiel, Germany
| | | | - F. Hilpert
- Univklin Schleswig-Holstein, Kiel, Germany
| | - W. Jonat
- Univklin Schleswig-Holstein, Kiel, Germany
| |
Collapse
|
41
|
Weigel M. IVF trotz HIV? Geburtshilfe Frauenheilkd 2003. [DOI: 10.1055/s-2003-42952] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022] Open
|
42
|
Affiliation(s)
- M Weigel
- Department of Obstetrics and Gynaecology, University Hospital of Mannheim, Germany
| |
Collapse
|
43
|
Affiliation(s)
- M Weigel
- Universitätsfrauenklinik, Mannheim.
| |
Collapse
|
44
|
Stähle C, Melchert F, Weigel M. [Investigation of a fetal heart-rate pattern that shows a reduced oscillation amplitude]. Z Geburtshilfe Neonatol 2003; 207:110-3. [PMID: 12891470 DOI: 10.1055/s-2003-40974] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
A fetal heart-rate pattern that has a reduced oscillation amplitude may indicate a physiological fetal dormant period but could also be an indication of fetal hypoxemia. In some rare cases such a fetal heart rate-pattern can be an indicator of cerebral or cardial fetal malformation or of an intoxication caused by sedative drugs. Our patient is a 32-year-old Para III in the phase of 29 weeks and 3 days gestation. Upon admission to the clinic, the fetal heart-rate pattern showed a reduced oscillation amplitude, and there were no signs of fetal movement. The ultrasound examination gave us no reason to suspect fetal malformation, and the results of the Doppler ultrasonography were also normal. However, although the patient had denied taking any medication at all, the results of an toxicological blood test confirmed our suspicion of benzodiazepine intoxication. Throughout the night the fetal heart-rate pattern was continuously measured, and in the early hours of the morning, after breaking down of the oxazepam medication, a normalization of the fetal heart-rate pattern was observed. This case report definitively demonstrates that Doppler ultrasonography is a valuable method for assessing any uncertainty regarding a fetal heart-rate pattern.
Collapse
Affiliation(s)
- C Stähle
- Universitäts-Frauenklinik Mannheim, Fakultät für klinische Medizin der Ruprecht-Karls-Universität Heidelberg, Mannheim
| | | | | |
Collapse
|
45
|
Beck G, Melchert F, Weigel M. [Family planning and pregnancy with thalassemia major]. Z Geburtshilfe Neonatol 2003; 207:66-70. [PMID: 12740749 DOI: 10.1055/s-2003-39150] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
We present the case of a young Italian woman with thalassemia major and describe a series of complications such as infertility, fetal growth restriction, difficult intubation, and cardiac decompensation that occurred in the course of family planning, pregnancy, and the puerperal period. By review of the literature and based on own experiences, we show how the preconceptional consultation and the care during a pregnancy, especially the individualized planning of delivery, can be optimized. The intensive and interdisciplinary care by obstetricians and internists is very important.
Collapse
MESH Headings
- Adult
- Cesarean Section
- Combined Modality Therapy
- Family Planning Services
- Female
- Fetal Growth Retardation/diagnosis
- Fetal Growth Retardation/therapy
- Heart Failure/diagnosis
- Heart Failure/therapy
- Humans
- Infant, Newborn
- Infant, Premature, Diseases/diagnosis
- Infant, Premature, Diseases/genetics
- Infertility, Female/diagnosis
- Infertility, Female/therapy
- Male
- Patient Care Team
- Preconception Care
- Pregnancy
- Pregnancy Complications, Hematologic/diagnosis
- Pregnancy Complications, Hematologic/therapy
- Prenatal Care
- Puerperal Disorders/diagnosis
- Puerperal Disorders/therapy
- Ultrasonography, Doppler
- Ultrasonography, Prenatal
- beta-Thalassemia/diagnosis
- beta-Thalassemia/genetics
- beta-Thalassemia/therapy
Collapse
Affiliation(s)
- G Beck
- Universitäts-Frauenklinik Mannheim
| | | | | |
Collapse
|
46
|
Feuring M, Bertsch T, Tran BM, Rossol-Haseroth K, Losel R, Tillmann HC, Schultz A, Weigel M, Wehling M. Seminal plasma hormone concentration after oral application of progesterone. Int J Clin Pharmacol Ther 2002; 40:47-52. [PMID: 11862972 DOI: 10.5414/cpp40047] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Previous studies have revealed beneficial in vitro effects of progesterone on sperm function. The aim of this pilot study was to prove if orally given micronized progesterone leads to elevations in progesterone and/or 17alpha-hydroxyprogesterone levels in seminal plasma, since higher seminal plasma levels of these hormones could possibly have a beneficial effect on sperm function as seen in in vitro investigations. Multiple application of micronized progesterone given over 4 days (daily dose 400 mg) to 6 healthy subjects resulted in elevated seminal plasma levels of progesterone (10.90 +/- 9.02 nmol/l vs. 1.43 +/- 0.56 nmol/l, p = 0.04) and 17alpha-hydroxyprogesterone (3.09 +/- 1.72 nmol/l vs. 1.62 +/- 1.26 nmol/l, p = 0.04) whereas no significant difference could be found in testosterone levels (34.82 +/- 13.00 vs. 30.91 +/- 8.56 nmol/l, p = 0.43). In contrast, androstendione levels in seminal plasma were reduced (2.68 1.28 nmol/l vs. 3.65 +/- 1.36 nmol/l, p = 0.01). Although micronized progesterone is rapidly metabolized, oral application resulted in pronounced elevations of progesterone and 17alpha-hydroxyprogesterone in seminal plasma. Further studies will show if oral application of micronized progesterone can induce beneficial effects on sperm function such as those seen in in vitro investigations.
Collapse
Affiliation(s)
- M Feuring
- Institute of Clinical Pharmacology, Faculty of Clinical Medicine Mannheim, University of Heidelberg, Germany
| | | | | | | | | | | | | | | | | |
Collapse
|
47
|
Abstract
Endothelins (ET) are potent vasoconstrictive peptides originally isolated from vascular endothelial cells. Their biological effects are mediated through two different receptors, the endothelin-1 (ET-1)-selective endothelin receptor subtype ETA and the non-selective receptor subtype ETB. ET-1 protein has been found in human ovarian follicular fluid and ET-1 mRNA expression has been demonstrated in ovarian tissue. These findings indicate that the endothelin-system participates in the modulation of ovarian function, probably acting in an autocrine/paracrine manner. In the current study we used freshly aspirated, luteinized human granulosa cells (hGC) representing an in vitro model of the early corpus luteum. By means of RT-PCR and immunocytochemistry we investigated whether luteinized human granulosa cells express ETA and ETB receptors. Specific amplification products of ETA transcripts were detected in all samples investigated. In contrast, only after using a three-fold amount of ETB reverse transcripts we were able to demonstrate specific, but weak amplification products. In addition, immunocytochemical staining for ETA but not for ETB was found in granulosa cell preparations. The present study provides clear evidence that human granulosa cells predominantly express ETA receptor subtype mRNA and protein hinting to its possible role in follicle maturation and corpus luteum formation.
Collapse
Affiliation(s)
- M Gentili
- Department of Obstetrics and Gynaecology, University of Heidelberg, Germany.
| | | | | | | | | |
Collapse
|
48
|
Römer A, Weigel M, Zieger W, Melchert F. Veränderungen der Zervixreife und Geburtsdauer nach geburtsvorbereitender Akupunkturtherapie. Das Mannheimer Schema - Prenatal Acupuncture: Effects on Cervical Maturation and Duration of Labor -. Geburtshilfe Frauenheilkd 2000. [DOI: 10.1055/s-2000-8028] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022] Open
|
49
|
Beichert M, Buchholz B, Weigel M, Martini M, Breitkreutz R, Melchert F. [Prenatal care of a HIV-1-positive pregnancy and birth]. Zentralbl Gynakol 1999; 121:549-52. [PMID: 10612225] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/15/2023]
Abstract
Mother-to-child (vertical) transmission of the human immunodeficiency virus type-1 (HIV-1) is now the main route of infection in HIV-positive children. Without any medical measures and avoiding breastfeeding the rate of vertical HIV-1-transmission is 15-20% in Europe. The rate of vertical HIV-transmission in the German centers is today approximately 2%. This low risk is the result of interdisciplinary prenatal care, antiretroviral therapy according to the individual risk profile as well as cesarean section before onset of labor, and antiretroviral treatment of neonates in the centers.
Collapse
|
50
|
Falkenstein E, Heck M, Gerdes D, Grube D, Christ M, Weigel M, Buddhikot M, Meizel S, Wehling M. Specific progesterone binding to a membrane protein and related nongenomic effects on Ca2+-fluxes in sperm. Endocrinology 1999; 140:5999-6002. [PMID: 10579369 DOI: 10.1210/endo.140.12.7304] [Citation(s) in RCA: 69] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Rapid, nongenomic effects of steroids are supposed to be transmitted by membrane receptors unrelated to the classic intracellular steroid receptors. In this context, a putative progesterone membrane binding protein (mPR) has been identified, recently. Here we show that expression of mPR-cDNA in CHO cells leads to increased microsomal progesterone binding. This result is mirrored by effects of an antibody raised against the recombinant E. coli mPR which suppressed the rapid progesterone-initiated Ca2+ increase in sperm. Our results support the assumption that mPR represents the first steroid membrane receptor or a part of it involved in rapid, nongenomic steroid signalling.
Collapse
Affiliation(s)
- E Falkenstein
- Institute of Clinical Pharmacology, Faculty of Clinical Medicine at Mannheim, University of Heidelberg, Mannheim, Germany
| | | | | | | | | | | | | | | | | |
Collapse
|