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Paping A, Basler C, Ehrlich L, Fasting C, Melchior K, Ziska T, Thiele M, Duda GN, Timm S, Ochs M, Rancourt RC, Henrich W, Braun T. Uterine scars after caesarean delivery: From histology to the molecular and ultrastructural level. Wound Repair Regen 2023; 31:752-763. [PMID: 37955528 DOI: 10.1111/wrr.13127] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2023] [Revised: 09/28/2023] [Accepted: 11/01/2023] [Indexed: 11/14/2023]
Abstract
Uterine rupture during a trial of labor after caesarean delivery (CD) is a serious complication for mother and fetus. The lack of knowledge on histological features and molecular pathways of uterine wound healing has hindered research in this area from evolving over time. We analysed collagen content and turnover in uterine scars on a histological, molecular and ultrastructural level. Therefore, tissue samples from the lower uterine segment were obtained during CD from 16 pregnant women with at least one previous CD, from 16 pregnant women without previous CD, and from 16 non-pregnant premenopausal women after hysterectomy for a benign disease. Histomorphometrical collagen quantification showed, that the collagen content of the scar area in uterine wall specimens after previous CD was significantly higher than in the unscarred myometrium of the same women and the control groups. Quantitative real-time PCR of uterine scar tissue from FFPE samples delineated by laser microdissection yielded a significantly higher COL3A1 expression and a significantly lower COL1A2/COL3A1 ratio in scarred uteri than in samples from unscarred uteri. Histological collagen content and the expression of COL1A2 and COL3A1 were positively correlated, while COL1A2/COL3A1 ratio was negatively correlated with the histological collagen content. Transmission electron microscopy revealed a destroyed myometrial ultrastructure in uterine scars with increased collagen density. We conclude that the high collagen content in uterine scars results from an ongoing overexpression of collagen I and III. This is a proof of concept to enable further analyses of specific factors that mediate uterine wound healing.
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Affiliation(s)
- Alexander Paping
- Department of Obstetrics, Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany
- Division of Experimental Obstetrics, Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany
| | - Clara Basler
- Division of Experimental Obstetrics, Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany
| | - Loreen Ehrlich
- Division of Experimental Obstetrics, Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany
| | - Carlo Fasting
- Institut für Chemie und Biochemie, Freie Universität Berlin, Berlin, Germany
| | - Kerstin Melchior
- Division of Experimental Obstetrics, Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany
| | - Thomas Ziska
- Division of Experimental Obstetrics, Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany
| | - Mario Thiele
- Julius Wolff Institute and Center for Musculoskeletal Surgery, Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany
| | - Georg N Duda
- Julius Wolff Institute and Center for Musculoskeletal Surgery, Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany
| | - Sara Timm
- Core Facility Electron Microscopy, Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany
| | - Matthias Ochs
- Core Facility Electron Microscopy, Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany
- Institute of Functional Anatomy, Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany
| | - Rebecca C Rancourt
- Division of Experimental Obstetrics, Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany
| | - Wolfgang Henrich
- Department of Obstetrics, Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany
| | - Thorsten Braun
- Department of Obstetrics, Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany
- Division of Experimental Obstetrics, Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany
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Bandick E, Biedermann L, Ren Y, Donner S, Thiele M, Korus G, Tsitsilonis S, Müller M, Duda G, Perka C, Kienzle A. Periprosthetic Joint Infections of the Knee Lastingly Impact the Bone Homeostasis. J Bone Miner Res 2023; 38:1472-1479. [PMID: 37534610 DOI: 10.1002/jbmr.4892] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/04/2023] [Revised: 07/26/2023] [Accepted: 08/01/2023] [Indexed: 08/04/2023]
Abstract
After periprosthetic joint infection (PJI)-dependent revision surgery, a significantly elevated number of patients suffer from prosthesis failure due to aseptic loosening and require additional revision surgery despite clearance of the initial infection. The mechanisms underlying this pathology are not well understood, as it has been assumed that the bone stock recovers after revision surgery. Despite clinical evidence suggesting decreased osteogenic potential in PJI, understanding of the underlying biology remains limited. In this study, we investigated the impact of PJI on bone homeostasis in a two-stage exchange approach at explantation and reimplantation. Sixty-four human tibial and femoral specimens (20 control, 20 PJI septic explantation, and 24 PJI prosthesis reimplantation samples) were analyzed for their bone microstructure, cellular composition, and expression of relevant genetic markers. Samples were analyzed using X-ray microtomography, Alcian blue and tartrate-resistant acid phosphatase staining, and RT-qPCR. In patients with PJI, bone volume (BV/TV; 0.173 ± 0.026; p < 0.001), trabecular thickness (164.262 ± 18.841 μm; p < 0.001), and bone mineral density (0.824 ± 0.017 g/cm2 ; p = 0.049) were reduced; trabecular separation (1833.939 ± 178.501 μm; p = 0.005) was increased. While prevalence of osteoclasts was elevated (N.Oc/BS: 0.663 ± 0.102, p < 0.001), osteoblast cell numbers were lower at explantation (N.Ob/BS: 0.149 ± 0.021; p = 0.047). Mean expression of bone homeostasis markers osteocalcin, osteopontin, Runx2, TSG-6, and FGF-2 was significantly reduced at prosthesis explantation. Despite partial recovery, all analyzed parameters were still significantly impacted at reimplantation. In contrast, mean expression of osteoclastogenesis-stimulating cytokine IL-17a was significantly increased at both explantation and reimplantation. In this study, we found a strong and lasting impact of PJI on the bone homeostasis on a molecular, cellular, and microstructural level. These changes may be responsible for the increased risk of prosthesis failure due to aseptic loosening. Our data suggest there is significant potential in modulating bone homeostasis to improve prosthesis fixation and long-term clinical outcome in affected patients. © 2023 The Authors. Journal of Bone and Mineral Research published by Wiley Periodicals LLC on behalf of American Society for Bone and Mineral Research (ASBMR).
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Affiliation(s)
- Evgeniya Bandick
- Center for Musculoskeletal Surgery, Clinic for Orthopedics, Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Berlin, Germany
| | - Lara Biedermann
- Center for Musculoskeletal Surgery, Clinic for Orthopedics, Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Berlin, Germany
| | - Yi Ren
- Center for Musculoskeletal Surgery, Clinic for Orthopedics, Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Berlin, Germany
| | - Stefanie Donner
- Center for Musculoskeletal Surgery, Clinic for Orthopedics, Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Berlin, Germany
| | - Mario Thiele
- Julius Wolff Institute and Center for Musculoskeletal Surgery, Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Berlin, Germany
| | - Gabriela Korus
- Julius Wolff Institute and Center for Musculoskeletal Surgery, Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Berlin, Germany
| | - Serafeim Tsitsilonis
- Center for Musculoskeletal Surgery, Clinic for Orthopedics, Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Berlin, Germany
| | - Michael Müller
- Center for Musculoskeletal Surgery, Clinic for Orthopedics, Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Berlin, Germany
| | - Georg Duda
- Julius Wolff Institute and Center for Musculoskeletal Surgery, Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Berlin, Germany
| | - Carsten Perka
- Center for Musculoskeletal Surgery, Clinic for Orthopedics, Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Berlin, Germany
| | - Arne Kienzle
- Center for Musculoskeletal Surgery, Clinic for Orthopedics, Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Berlin, Germany
- Julius Wolff Institute and Center for Musculoskeletal Surgery, Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Berlin, Germany
- Berlin Institute of Health at Charité - Universitätsmedizin Berlin, BIH Biomedical Innovation Academy, BIH Charité Clinician Scientist Program, Berlin, Germany
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Kucherenko MM, Sang P, Yao J, Gransar T, Dhital S, Grune J, Simmons S, Michalick L, Wulsten D, Thiele M, Shomroni O, Hennig F, Yeter R, Solowjowa N, Salinas G, Duda GN, Falk V, Vyavahare NR, Kuebler WM, Knosalla C. Elastin stabilization prevents impaired biomechanics in human pulmonary arteries and pulmonary hypertension in rats with left heart disease. Nat Commun 2023; 14:4416. [PMID: 37479718 PMCID: PMC10362055 DOI: 10.1038/s41467-023-39934-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2021] [Accepted: 07/04/2023] [Indexed: 07/23/2023] Open
Abstract
Pulmonary hypertension worsens outcome in left heart disease. Stiffening of the pulmonary artery may drive this pathology by increasing right ventricular dysfunction and lung vascular remodeling. Here we show increased stiffness of pulmonary arteries from patients with left heart disease that correlates with impaired pulmonary hemodynamics. Extracellular matrix remodeling in the pulmonary arterial wall, manifested by dysregulated genes implicated in elastin degradation, precedes the onset of pulmonary hypertension. The resulting degradation of elastic fibers is paralleled by an accumulation of fibrillar collagens. Pentagalloyl glucose preserves arterial elastic fibers from elastolysis, reduces inflammation and collagen accumulation, improves pulmonary artery biomechanics, and normalizes right ventricular and pulmonary hemodynamics in a rat model of pulmonary hypertension due to left heart disease. Thus, targeting extracellular matrix remodeling may present a therapeutic approach for pulmonary hypertension due to left heart disease.
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Affiliation(s)
- Mariya M Kucherenko
- Department of Cardiothoracic and Vascular Surgery, Deutsches Herzzentrum der Charité (DHZC), Augustenburger Platz 1, 13353, Berlin, Germany
- Charité-Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Germany, Charitéplatz 1, 10117, Berlin, Germany
- Institute of Physiology, Charité-Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Charitéplatz 1, 10117, Berlin, Germany
- DZHK (German Centre for Cardiovascular Research), partner site Berlin, Germany
| | - Pengchao Sang
- Department of Cardiothoracic and Vascular Surgery, Deutsches Herzzentrum der Charité (DHZC), Augustenburger Platz 1, 13353, Berlin, Germany
- Charité-Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Germany, Charitéplatz 1, 10117, Berlin, Germany
- Institute of Physiology, Charité-Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Charitéplatz 1, 10117, Berlin, Germany
- DZHK (German Centre for Cardiovascular Research), partner site Berlin, Germany
| | - Juquan Yao
- Department of Cardiothoracic and Vascular Surgery, Deutsches Herzzentrum der Charité (DHZC), Augustenburger Platz 1, 13353, Berlin, Germany
- Charité-Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Germany, Charitéplatz 1, 10117, Berlin, Germany
- Institute of Physiology, Charité-Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Charitéplatz 1, 10117, Berlin, Germany
| | - Tara Gransar
- Department of Cardiothoracic and Vascular Surgery, Deutsches Herzzentrum der Charité (DHZC), Augustenburger Platz 1, 13353, Berlin, Germany
- Charité-Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Germany, Charitéplatz 1, 10117, Berlin, Germany
- Institute of Physiology, Charité-Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Charitéplatz 1, 10117, Berlin, Germany
| | - Saphala Dhital
- Department of Bioengineering, Clemson University, 29634, Clemson, SC, USA
| | - Jana Grune
- Department of Cardiothoracic and Vascular Surgery, Deutsches Herzzentrum der Charité (DHZC), Augustenburger Platz 1, 13353, Berlin, Germany
- Charité-Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Germany, Charitéplatz 1, 10117, Berlin, Germany
- Institute of Physiology, Charité-Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Charitéplatz 1, 10117, Berlin, Germany
- DZHK (German Centre for Cardiovascular Research), partner site Berlin, Germany
| | - Szandor Simmons
- Institute of Physiology, Charité-Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Charitéplatz 1, 10117, Berlin, Germany
- DZHK (German Centre for Cardiovascular Research), partner site Berlin, Germany
| | - Laura Michalick
- Institute of Physiology, Charité-Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Charitéplatz 1, 10117, Berlin, Germany
- DZHK (German Centre for Cardiovascular Research), partner site Berlin, Germany
| | - Dag Wulsten
- Julius Wolff Institute for Biomechanics and Musculoskeletal Regeneration, Berlin Institute of Health at Charité - Universitätsmedizin Berlin, Augustenburger Platz 1, 13353, Berlin, Germany
| | - Mario Thiele
- Julius Wolff Institute for Biomechanics and Musculoskeletal Regeneration, Berlin Institute of Health at Charité - Universitätsmedizin Berlin, Augustenburger Platz 1, 13353, Berlin, Germany
| | - Orr Shomroni
- NGS Integrative Genomics (NIG), Justus-von-Liebig-Weg 11, 37077, Göttingen, Germany
| | - Felix Hennig
- Department of Cardiothoracic and Vascular Surgery, Deutsches Herzzentrum der Charité (DHZC), Augustenburger Platz 1, 13353, Berlin, Germany
- Charité-Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Germany, Charitéplatz 1, 10117, Berlin, Germany
- DZHK (German Centre for Cardiovascular Research), partner site Berlin, Germany
| | - Ruhi Yeter
- Department of Cardiothoracic and Vascular Surgery, Deutsches Herzzentrum der Charité (DHZC), Augustenburger Platz 1, 13353, Berlin, Germany
- Charité-Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Germany, Charitéplatz 1, 10117, Berlin, Germany
| | - Natalia Solowjowa
- Department of Cardiothoracic and Vascular Surgery, Deutsches Herzzentrum der Charité (DHZC), Augustenburger Platz 1, 13353, Berlin, Germany
- Charité-Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Germany, Charitéplatz 1, 10117, Berlin, Germany
- DZHK (German Centre for Cardiovascular Research), partner site Berlin, Germany
| | - Gabriela Salinas
- NGS Integrative Genomics (NIG), Justus-von-Liebig-Weg 11, 37077, Göttingen, Germany
| | - Georg N Duda
- Julius Wolff Institute for Biomechanics and Musculoskeletal Regeneration, Berlin Institute of Health at Charité - Universitätsmedizin Berlin, Augustenburger Platz 1, 13353, Berlin, Germany
- Berlin Institute of Health Center for Regenerative Therapies, Berlin Institute of Health at Charité - Universitätsmedizin Berlin, Augustenburger Platz 1, 13353, Berlin, Germany
| | - Volkmar Falk
- Department of Cardiothoracic and Vascular Surgery, Deutsches Herzzentrum der Charité (DHZC), Augustenburger Platz 1, 13353, Berlin, Germany
- Charité-Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Germany, Charitéplatz 1, 10117, Berlin, Germany
- DZHK (German Centre for Cardiovascular Research), partner site Berlin, Germany
- Department of Health Science and Technology, Translational Cardiovascular Technology, LFW C 13.2, ETH Zurich, Universitätstrasse 2, 8092, Zürich, Switzerland
| | - Naren R Vyavahare
- Department of Bioengineering, Clemson University, 29634, Clemson, SC, USA
| | - Wolfgang M Kuebler
- Institute of Physiology, Charité-Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Charitéplatz 1, 10117, Berlin, Germany.
- DZHK (German Centre for Cardiovascular Research), partner site Berlin, Germany.
- Departments of Physiology and Surgery, University of Toronto, 1 King´s College Circle, Toronto, ON M5S 1A8, Canada.
| | - Christoph Knosalla
- Department of Cardiothoracic and Vascular Surgery, Deutsches Herzzentrum der Charité (DHZC), Augustenburger Platz 1, 13353, Berlin, Germany.
- Charité-Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Germany, Charitéplatz 1, 10117, Berlin, Germany.
- DZHK (German Centre for Cardiovascular Research), partner site Berlin, Germany.
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Garrido CA, Garske DS, Thiele M, Amini S, Real S, Duda GN, Schmidt-Bleek K, Cipitria A. Hydrogels with stiffness-degradation spatial patterns control anisotropic 3D cell response. Biomater Adv 2023; 151:213423. [PMID: 37167748 DOI: 10.1016/j.bioadv.2023.213423] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/24/2023] [Revised: 04/03/2023] [Accepted: 04/05/2023] [Indexed: 05/13/2023]
Abstract
In nature, tissues are patterned, but most biomaterials used in human applications are not. Patterned biomaterials offer the opportunity to mimic spatially segregating biophysical and biochemical properties found in nature. Engineering such properties allows to study cell-matrix interactions in anisotropic matrices in great detail. Here, we developed alginate-based hydrogels with patterns in stiffness and degradation, composed of distinct areas of soft non-degradable (Soft-NoDeg) and stiff degradable (Stiff-Deg) material properties. The hydrogels exhibit emerging patterns in stiffness and degradability over time, taking advantage of dual crosslinking: Diels-Alder covalent crosslinking (norbornene-tetrazine, non degradable) and UV-mediated peptide crosslinking (matrix metalloprotease sensitive peptide, enzymatically degradable). The materials were mechanically characterized using rheology for single-phase and surface micro-indentation for patterned materials. 3D encapsulated mouse embryonic fibroblasts (MEFs) allowed to characterize the anisotropic cell-matrix interaction in terms of cell morphology by employing a novel image-based quantification tool. Live/dead staining showed no differences in cell viability but distinct patterns in proliferation, with higher cell number in Stiff-Deg materials at day 14. Patterns of projected cell area became visible already at day 1, with larger values in Soft-NoDeg materials. This was inverted at day 14, when larger projected cell areas were identified in Stiff-Deg. This shift was accompanied by a significant decrease in cell circularity in Stiff-Deg. The control of anisotropic cell morphology by the material patterns was also confirmed by a significant increase in filopodia number and length in Stiff-Deg materials. The novel image-based quantification tool was useful to spatially visualize and quantify the anisotropic cell response in 3D hydrogels with stiffness-degradation spatial patterns. Our results show that patterning of stiffness and degradability allows to control cell anisotropic response in 3D and can be quantified by image-based strategies. This allows a deeper understanding of cell-matrix interactions in a multicomponent material.
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Affiliation(s)
- Claudia A Garrido
- Max Planck Institute for Colloids and Interfaces, Potsdam, Germany; Julius Wolff Institute, Berlin Institute of Health at Charité - Universitätsmedizin Berlin, Berlin, Germany
| | - Daniela S Garske
- Max Planck Institute for Colloids and Interfaces, Potsdam, Germany; Julius Wolff Institute, Berlin Institute of Health at Charité - Universitätsmedizin Berlin, Berlin, Germany
| | - Mario Thiele
- Julius Wolff Institute, Berlin Institute of Health at Charité - Universitätsmedizin Berlin, Berlin, Germany
| | - Shahrouz Amini
- Max Planck Institute for Colloids and Interfaces, Potsdam, Germany
| | - Samik Real
- Digital Health Center, Hasso Plattner Institute, University of Potsdam, Potsdam, Germany
| | - Georg N Duda
- Julius Wolff Institute, Berlin Institute of Health at Charité - Universitätsmedizin Berlin, Berlin, Germany
| | - Katharina Schmidt-Bleek
- Julius Wolff Institute, Berlin Institute of Health at Charité - Universitätsmedizin Berlin, Berlin, Germany
| | - Amaia Cipitria
- Max Planck Institute for Colloids and Interfaces, Potsdam, Germany; Group of Bioengineering in Regeneration and Cancer, Biodonostia Health Research Institute, San Sebastián, Spain; IKERBASQUE, Basque Foundation for Science, Bilbao, Spain.
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Paping A, Basler C, Melchior K, Ehrlich L, Thiele M, Duda GN, Henrich W, Braun T. Intraoperative ultrasound during repeat cesarean delivery facilitates sampling of uterine scar tissue. J Perinat Med 2023; 51:87-96. [PMID: 36394552 DOI: 10.1515/jpm-2022-0334] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/07/2022] [Accepted: 10/15/2022] [Indexed: 11/18/2022]
Abstract
OBJECTIVES Histological examination of uterine scars provides insight into uterine wound healing and helps to develop prevention methods of uterine wall rupture after previous uterine surgery. Therefore, exact intraoperative scar identification is needed for specimen collection from the actual scar tissue. The aim of this study was to correlate pre- and intraoperative ultrasound measurements of the lower uterine segment (LUS) with histological findings of scar tissue and to evaluate the relevance of intraoperative ultrasound. METHODS In a prospective observational study, preoperative and intraoperative sonographic measurements of the LUS thickness were performed in 33 women with a history of at least one cesarean delivery. Intraoperative ultrasound with a linear transducer placed directly on the uterus identified the scar area and uterotomy was performed 2 cm cranially. Tissue samples were taken after extraction of the fetus, embedded in paraffin wax, and stained according to Gomori Trichrome to identify scar tissue. Collagen content was evaluated with imaging software Fiji (NIH, Bethesda, USA). Preoperative and intraoperative sonographic measurements were correlated with histologic evidence of scar tissue. RESULTS Histological evidence of scar tissue was found in 11 out of 33 samples with significantly lower ultrasonographic thickness of the lower uterine segment compared to the other 22 samples, both antepartum (1.4 mm [1.3-1.9] vs. 2.0 mm [1.6-2.6], p=0.03) and intrapartum (1.6 mm [1.3-1.9] vs. 3.7 mm [2.0-4.7], p<0.01). Intraoperative ultrasound had a significantly higher predictive power (AUC difference 0.18 [0.03-0.33], p=0.01). CONCLUSIONS Intraoperative sonography identifies the uterine wall area with histologically confirmable scar tissue far better than preoperative sonography.
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Affiliation(s)
- Alexander Paping
- Department of Obstetrics, Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany
- Division of 'Experimental Obstetrics', Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany
| | - Clara Basler
- Division of 'Experimental Obstetrics', Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany
| | - Kerstin Melchior
- Division of 'Experimental Obstetrics', Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany
| | - Loreen Ehrlich
- Division of 'Experimental Obstetrics', Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany
| | - Mario Thiele
- Julius Wolff Institute and Center for Musculoskeletal Surgery, Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany
| | - Georg N Duda
- Julius Wolff Institute and Center for Musculoskeletal Surgery, Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany
| | - Wolfgang Henrich
- Department of Obstetrics, Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany
| | - Thorsten Braun
- Department of Obstetrics, Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany
- Division of 'Experimental Obstetrics', Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany
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Landlinger-Schubert C, Schinagl A, Thiele M. EP08.01-015 Safety, Tolerability, Pharmacokinetics, and Pharmacodynamics of the Anti-oxMIF Antibody ON203 in Malignant Solid Tumors. J Thorac Oncol 2022. [DOI: 10.1016/j.jtho.2022.07.587] [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: 11/26/2022]
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Tortorici M, Brauer E, Thiele M, Duda GN, Petersen A. Characterizing cell recruitment into isotropic and anisotropic biomaterials by quantification of spatial density gradients in vitro. Front Bioeng Biotechnol 2022; 10:939713. [PMID: 35992332 PMCID: PMC9389461 DOI: 10.3389/fbioe.2022.939713] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2022] [Accepted: 07/04/2022] [Indexed: 11/13/2022] Open
Abstract
The success of cell-free in situ tissue engineering approaches depends on an appropriate recruitment of autologous cells from neighboring tissues. This identifies cellular migration as a critical parameter for the pre-clinical characterization of biomaterials. Here, we present a new method to quantify both the extent and the spatial anisotropy of cell migration in vitro. For this purpose, a cell spheroid is used as a cell source to provide a high number of cells for cellular invasion and, at the same time, to guarantee a controlled and spatially localized contact to the material. Therefore, current limitations of assays based on 2D cell sources can be overcome. We tested the method on three biomaterials that are in clinical use for soft tissue augmentation in maxilla-facial surgery and a substrate used for 3D in vitro cell culture. The selected biomaterials were all collagen-derived, but differed in their internal architecture. The analysis of cellular isodensity profiles within the biomaterials allowed the identification of the extent and the preferential directions of migration, as well as their relation to the biomaterials and their specific pore morphologies. The higher cell density within the biomaterials resulting from the here-introduced cell spheroid assay compared to established 2D cell layer assays suggests a better representation of the in vivo situation. Consequently, the presented method is proposed to advance the pre-clinical evaluation of cell recruitment into biomaterials, possibly leading to an improved prediction of the regeneration outcome.
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Affiliation(s)
- Martina Tortorici
- Julius Wolff Institute, Berlin Institute of Health at Charité—Universitätsmedizin Berlin, Berlin, Germany
- Berlin-Brandenburg School for Regenerative Therapies, Charité—Universitätsmedizin Berlin, Berlin, Germany
| | - Erik Brauer
- Julius Wolff Institute, Berlin Institute of Health at Charité—Universitätsmedizin Berlin, Berlin, Germany
- Berlin-Brandenburg School for Regenerative Therapies, Charité—Universitätsmedizin Berlin, Berlin, Germany
- BIH Center for Regenerative Therapies, Berlin Institute of Health at Charité—Universitätsmedizin Berlin, Berlin, Germany
| | - Mario Thiele
- Julius Wolff Institute, Berlin Institute of Health at Charité—Universitätsmedizin Berlin, Berlin, Germany
| | - Georg N. Duda
- Julius Wolff Institute, Berlin Institute of Health at Charité—Universitätsmedizin Berlin, Berlin, Germany
- Berlin-Brandenburg School for Regenerative Therapies, Charité—Universitätsmedizin Berlin, Berlin, Germany
- BIH Center for Regenerative Therapies, Berlin Institute of Health at Charité—Universitätsmedizin Berlin, Berlin, Germany
| | - Ansgar Petersen
- Julius Wolff Institute, Berlin Institute of Health at Charité—Universitätsmedizin Berlin, Berlin, Germany
- Berlin-Brandenburg School for Regenerative Therapies, Charité—Universitätsmedizin Berlin, Berlin, Germany
- BIH Center for Regenerative Therapies, Berlin Institute of Health at Charité—Universitätsmedizin Berlin, Berlin, Germany
- *Correspondence: Ansgar Petersen,
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8
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Maurer B, Mirkina I, Thiele M. P-263 ON203: A new antibody targeting the oxidized form of macrophage migration inhibitory factor demonstrates antitumorigenic activity and TME modulation in patient-derived CRC tumoroids. Ann Oncol 2022. [DOI: 10.1016/j.annonc.2022.04.353] [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: 11/17/2022] Open
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9
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Rendenbach C, Fischer H, Kopp A, Schmidt-Bleek K, Kreiker H, Stumpp S, Thiele M, Duda G, Hanken H, Beck-Broichsitter B, Jung O, Kröger N, Smeets R, Heiland M. Improved in vivo osseointegration and degradation behavior of PEO surface-modified WE43 magnesium plates and screws after 6 and 12 months. Mater Sci Eng C Mater Biol Appl 2021; 129:112380. [PMID: 34579899 DOI: 10.1016/j.msec.2021.112380] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/06/2021] [Revised: 07/30/2021] [Accepted: 08/15/2021] [Indexed: 11/26/2022]
Abstract
Magnesium is a highly promising candidate with respect to its future use as a material for resorbable implants. When magnesium degrades, hydrogen gas is released. High doses of gas emergence are reported to impair osseointegration and may therefore lead to fixation failure. The successful delay and reduction of the degradation rate by applying plasma electrolytic oxidation (PEO) as a post processing surface modification method for magnesium alloy has recently been demonstrated. The aim of this study was thus to compare the degradation behavior of a WE43-based plate system with and without respective PEO surface modification and to further investigate osseointegration, as well as the resulting effects on the surrounding bony tissue of both variants in a miniature pig model. WE43 magnesium screws and plates without (WE43) and with PEO surface modification (WE43-PEO) were implanted in long bones of Göttingen Miniature Pigs. At six and twelve months after surgery, micro-CT and histomorphometric analysis was performed. Residual screw volume (SV/TV; WE43: 28.8 ± 21.1%; WE43-PEO: 62.9 ± 31.0%; p = 0.027) and bone implant contact area (BIC; WE43: 18.1 ± 21.7%; WE43-PEO: 51.6 ± 27.7%; p = 0.015) were increased after six months among the PEO-modified implants. Also, surrounding bone density within the cortical bone was not affected by surface modification (BVTV; WE43: 76.7 ± 13.1%; WE43-PEO: 73.1 ± 16.2%; p = 0.732). Intramedullar (BV/TV; WE43: 33.2 ± 16.7%; WE43-PEO 18.4 ± 9.0%; p = 0.047) and subperiosteal (bone area; WE43: 2.6 ± 3.4 mm2; WE43-PEO: 6,9 ± 5.2 mm2; p = 0.049) new bone formation was found for both, surface-modified and non-surface-modified groups. After twelve months, no significant differences of SV/TV and BV/TV were found between the two groups. PEO surface modification of WE43 plate systems improved osseointegration and significantly reduced the degradation rate within the first six months in vivo. Osteoconductive and osteogenic stimulation by WE43 magnesium implants led to overall increased bone growth, when prior PEO surface modification was conducted.
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Affiliation(s)
- Carsten Rendenbach
- Department of Oral and Maxillofacial Surgery, Charité - Universitätsmedizin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin and Berlin Institute of Health, Augustenburger Platz 1, 13353, Berlin, Germany.
| | - Heilwig Fischer
- Department of Oral and Maxillofacial Surgery, Charité - Universitätsmedizin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin and Berlin Institute of Health, Augustenburger Platz 1, 13353, Berlin, Germany; Julius Wolff Institute and Center for Musculoskeletal Surgery, Charité - Universitätsmedizin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin and Berlin Institute of Health, Augustenburger Platz 1, 13353, Berlin, Germany
| | | | - Katharina Schmidt-Bleek
- Julius Wolff Institute and Center for Musculoskeletal Surgery, Charité - Universitätsmedizin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin and Berlin Institute of Health, Augustenburger Platz 1, 13353, Berlin, Germany
| | - Henri Kreiker
- Department of Oral and Maxillofacial Surgery, Charité - Universitätsmedizin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin and Berlin Institute of Health, Augustenburger Platz 1, 13353, Berlin, Germany
| | - Sabine Stumpp
- Julius Wolff Institute and Center for Musculoskeletal Surgery, Charité - Universitätsmedizin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin and Berlin Institute of Health, Augustenburger Platz 1, 13353, Berlin, Germany
| | - Mario Thiele
- Julius Wolff Institute and Center for Musculoskeletal Surgery, Charité - Universitätsmedizin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin and Berlin Institute of Health, Augustenburger Platz 1, 13353, Berlin, Germany
| | - Georg Duda
- Julius Wolff Institute and Center for Musculoskeletal Surgery, Charité - Universitätsmedizin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin and Berlin Institute of Health, Augustenburger Platz 1, 13353, Berlin, Germany
| | - Henning Hanken
- Department of Oral and Maxillofacial Surgery, Asklepios Hospital North, Faculty of Medicine, Semmelweis University Campus Hamburg, Langenhorner Chaussee 560, 22419 Hamburg, Germany
| | - Benedicta Beck-Broichsitter
- Department of Oral and Maxillofacial Surgery, Charité - Universitätsmedizin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin and Berlin Institute of Health, Augustenburger Platz 1, 13353, Berlin, Germany
| | - Ole Jung
- Clinic and Policlinic for Dermatology and Venereology, University Medical Center Rostock, Schillingallee 35, 18057 Rostock, Germany
| | - Nadja Kröger
- Department of Plastic, Reconstructive and Aesthetic Surgery, University Hospital of Cologne, Kerpener Str. 62, 50 937 Köln, Germany
| | - Ralf Smeets
- Department of Oral and Maxillofacial Surgery, University Medical Center Hamburg-Eppendorf, Martinistraße 52, 20246, Hamburg, Germany
| | - Max Heiland
- Department of Oral and Maxillofacial Surgery, Charité - Universitätsmedizin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin and Berlin Institute of Health, Augustenburger Platz 1, 13353, Berlin, Germany
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Ernst I, Einig S, Büther F, Stegger L, Thiele M. Data-Driven 4 D PET/CT and PET/MRI for Target Delineation in Fiducial Free Stereotactic Body Radiotherapy of Liver Tumors. Int J Radiat Oncol Biol Phys 2019. [DOI: 10.1016/j.ijrobp.2019.06.1968] [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]
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11
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Thiele M, Krag A. Editorial: the portal hypertension puzzle-spleen stiffness evades validation as non-invasive marker of clinically significant portal hypertension. Aliment Pharmacol Ther 2018; 47:856-857. [PMID: 29446131 DOI: 10.1111/apt.14536] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/08/2022]
Affiliation(s)
- M Thiele
- Department of Gastroenterology and Hepatology, the Fibrosis, Fatty Liver and Steatohepatitis Research Centre, Odense University Hospital, Odense C, Denmark.,Institute for Clinical Research, University of Southern Denmark, Odense C, Denmark
| | - A Krag
- Department of Gastroenterology and Hepatology, the Fibrosis, Fatty Liver and Steatohepatitis Research Centre, Odense University Hospital, Odense C, Denmark.,Institute for Clinical Research, University of Southern Denmark, Odense C, Denmark
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12
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Thiele M, Madsen BS, Procopet B, Hansen JF, Møller LMS, Detlefsen S, Berzigotti A, Krag A. Erratum: Reliability Criteria for Liver Stiffness Measurements with Real-Time 2D Shear Wave Elastography in Different Clinical Scenarios of Chronic Liver Disease. Ultraschall Med 2017; 38:e51. [PMID: 27414979 DOI: 10.1055/s-0035-1567110] [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] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Affiliation(s)
- M Thiele
- Department of Gastroenterology and Hepatology, Odense University Hospital, Odense, Denmark
- Institute of Clinical Research, Syddansk Universitet Det Sundhedsvidenskabelige Fakultet, Odense, Denmark
- OPEN, Odense Patient data Explorative Network, Odense University Hospital, Odense, Denmark
| | - B S Madsen
- Department of Gastroenterology and Hepatology, Odense University Hospital, Odense, Denmark
- Institute of Clinical Research, Syddansk Universitet Det Sundhedsvidenskabelige Fakultet, Odense, Denmark
- OPEN, Odense Patient data Explorative Network, Odense University Hospital, Odense, Denmark
| | - B Procopet
- Department of Gastroenterology and Hepatology, Iuliu Hatieganu University of Medicine, Cluj Napoca, Romania
| | - J F Hansen
- Department of Infectious Diseases, Odense University Hospital, Odense, Denmark
| | - L M S Møller
- Department of Gastroenterology and Hepatology, Odense University Hospital, Odense, Denmark
- Institute of Clinical Research, Syddansk Universitet Det Sundhedsvidenskabelige Fakultet, Odense, Denmark
| | - S Detlefsen
- Department of Pathology, Odense University Hospital, Odense, Denmark
| | - A Berzigotti
- University Clinic for Visceral Surgery and Medicine (UVCM), Inselspital, University of Bern, Bern, Switzerland
| | - A Krag
- Department of Gastroenterology and Hepatology, Odense University Hospital, Odense, Denmark
- Institute of Clinical Research, Syddansk Universitet Det Sundhedsvidenskabelige Fakultet, Odense, Denmark
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13
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Affiliation(s)
- M Thiele
- Department of Gastroenterology and Hepatology, University of Southern Denmark & Odense University Hospital, Odense, Denmark
| | - A Krag
- Department of Gastroenterology and Hepatology, University of Southern Denmark & Odense University Hospital, Odense, Denmark.
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14
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Mitra R, Thiele M, Octa-Smolin F, Letzel MC, Niemeyer J. A bifunctional chiral [2]catenane based on 1,1'-binaphthyl-phosphates. Chem Commun (Camb) 2016; 52:5977-80. [PMID: 27058367 DOI: 10.1039/c6cc01980c] [Citation(s) in RCA: 51] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A novel [2]catenane was synthesised by ring-closing metathesis from a Ca-bisphosphate template. The resulting interlocked structure features two chiral 1,1'-binaphthyl-phosphates, leading to a bifunctional catenane structure. Initial binding studies point at the applicability of such mechanically interlocked bisphosphates as artificial receptors for dicationic guest molecules.
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Affiliation(s)
- R Mitra
- Institute of Organic Chemistry, Department of Chemistry, University of Duisburg-Essen, Universitätsstrasse 7, 45141 Essen, Germany.
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15
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Schafberg R, Schmidt R, Thiele M, Swalve H. Fat globule size distribution in milk of a German buffalo herd. Italian Journal of Animal Science 2016. [DOI: 10.4081/ijas.2007.s2.1080] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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16
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Moustakis C, Ernst I, Kittel C, Eich H, Krieger T, Duma M, Oechsner M, Ganswindt U, Heinz C, Alheit H, Blank H, Nestle U, Wiehle R, Kornhuber C, Ostheimer C, Petersen C, Albers D, Pollul G, Baus W, Altenstein G, Blanck O, Beckers E, Sterzing F, Kretschmer M, Seegenschmiedt H, Maass T, Droege S, Wolf U, Schoeffler J, Thiele M, Ciernik I, Ebrahimi F, Guckenberger M. Results of the Planning Comparison Study SBRT of NSCLC. Int J Radiat Oncol Biol Phys 2015. [DOI: 10.1016/j.ijrobp.2015.07.2012] [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: 11/16/2022]
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17
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Boese A, Detert M, Stibbe C, Thiele M, Arens C. “Hands free for intervention”, a new approach for transoral endoscopic surgery. Current Directions in Biomedical Engineering 2015. [DOI: 10.1515/cdbme-2015-0039] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
AbstractA standard method for transoral diagnostic and dissection of tumour is the endoscopic examination plus microscopic and laser supported surgery. For endoscopic examination a set of rigid endoscopes with different angles of view are on the market and in use. To simplify the diagnostic examination, a first idea was to use an endoscope with flexible angles of view. A further step of this approach is the electrical angulation of the endoscopic view to enable an adaption on the surgery site without using the hands. Thus the hands are free for intervention. This paper shows a first implementation of a prototype of an electrical operated endoscope for a free hand imaging in transoral interventions.
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Affiliation(s)
- A. Boese
- 1Department of Medical Engineering, Otto-von-Guericke University, Magdeburg, Germany, tel.: +493916719366
| | - M. Detert
- 2Institute of Micro and Sensor Systems, Otto-von-Guericke-University, Magdeburg, Germany
| | | | | | - Chr. Arens
- 4Department of Otorhinolaryngology, Otto-von-Guericke-University, Magdeburg, Germany
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18
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Thiele M, Schinagl A, Douillard P, Barak H, Adib D, Yazji S, Scheiflinger F, Kerschbaumer R. A fully human anti-oxMIF antibody penetrates colorectal cancer metastases and accumulates in cancer tissue. Ann Oncol 2015. [DOI: 10.1093/annonc/mdv090.10] [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: 11/13/2022] Open
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19
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Thiele M, Rabe S, Hessenkemper W, Roell D, Bartsch S, Kraft F, Abraham T, Houtsmuller A, Royen M, Giannis A, Baniahmad A. Novel Nor-Homo- and Spiro-Oxetan- Steroids Target the Human Androgen Receptor and Act as Antiandrogens. Curr Med Chem 2015; 22:1156-1167. [DOI: 10.2174/0929867321666140601164240] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2013] [Revised: 04/16/2014] [Accepted: 05/26/2014] [Indexed: 11/22/2022]
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21
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Thiele M, Hagemann T, Freissmuth M, Douillard P, Völkel D, Scheiflinger F, Kerschbaumer R. 811: Fully human antibodies specific for oxidized macrophage migration inhibitory factor (oxMIF) exhibit anti-cancer activity in animal models. Eur J Cancer 2014. [DOI: 10.1016/s0959-8049(14)50716-2] [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: 11/30/2022]
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22
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Fassbender M, Minkwitz S, Thiele M, Wildemann B. Efficacy of two different demineralised bone matrix grafts to promote bone healing in a critical-size-defect: a radiological, histological and histomorphometric study in rat femurs. International Orthopaedics (SICOT) 2014; 38:1963-9. [DOI: 10.1007/s00264-014-2321-2] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/22/2014] [Accepted: 03/07/2014] [Indexed: 11/28/2022]
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Mayer CT, Tian L, Hesse C, Kühl AA, Swallow M, Kruse F, Thiele M, Gershwin ME, Liston A, Sparwasser T. Anti-CD4 treatment inhibits autoimmunity in scurfy mice through the attenuation of co-stimulatory signals. J Autoimmun 2013; 50:23-32. [PMID: 24075450 DOI: 10.1016/j.jaut.2013.08.010] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2013] [Revised: 08/20/2013] [Accepted: 08/27/2013] [Indexed: 12/27/2022]
Abstract
A major concept in autoimmunity is that disruption of Foxp3(+) regulatory T cells (Tregs) predisposes to breach of tolerance. This is exemplified by the Foxp3-linked disorder termed IPEX (immunodysregulation, polyendocrinopathy, enteropathy, X-linked) which affects newborn children. There has been considerable clinical interest in the role of non-depleting anti-CD4 antibodies as a means of upregulating the function of Foxp3(+) Tregs in order to control detrimental inflammatory responses such as transplant rejection. However, according to the paradigm of a Treg-dependent mechanism of action, the effectiveness of anti-CD4 antibodies as a therapy for human autoimmune diseases is unclear considering that Treg function might be intrinsically impaired. Specifically, anti-CD4 therapy is expected to fail in patients suffering from the IPEX syndrome due to the lack of functional Foxp3(+) Tregs. Taking advantage of natural Foxp3 mutant scurfy (sf) mice closely resembling the IPEX syndrome, and genetically engineered mice depleted of Foxp3(+) Tregs, we report here that anti-CD4 treatment induces tolerance independent of Foxp3(+) Tregs. This so far undefined mechanism is dependent on the recessive non-infectious tolerization of autoreactive T cells. Treg-independent tolerance alone is powerful enough to suppress both the onset and severity of autoimmunity and reduces clinically relevant autoantibody levels and liver fibrosis. Mechanistically, tolerance induction requires the concomitant activation of autoreactive T cells and is associated with the down-regulation of the co-stimulatory TNF-receptor superfamily members OX40 and CD30 sustaining CD4(+) T cell survival. In the light of ongoing clinical trials, our results highlight an unexpected potency of anti-CD4 antibodies for the treatment of autoimmune diseases. Particularly, CD4 blockade might represent a novel therapeutic option for the human IPEX syndrome.
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Affiliation(s)
- C T Mayer
- Institute of Infection Immunology, TWINCORE, Centre for Experimental and Clinical Infection Research, Feodor-Lynen-Str. 7, 30625 Hannover, Germany(1)
| | - L Tian
- Autoimmune Genetics Laboratory, VIB, Campus Gasthuisberg, Herestraat 49, 3000 Leuven, Belgium; Department of Immunology and Microbiology, University of Leuven, Leuven, Belgium
| | - C Hesse
- Institute of Infection Immunology, TWINCORE, Centre for Experimental and Clinical Infection Research, Feodor-Lynen-Str. 7, 30625 Hannover, Germany(1)
| | - A A Kühl
- Department of Gastroenterology, Infectiology and Rheumatology, Charité - Universitätsmedizin Berlin, Campus Benjamin Franklin, Hindenburgdamm 30, D-12200 Berlin, Germany
| | - M Swallow
- Institute of Infection Immunology, TWINCORE, Centre for Experimental and Clinical Infection Research, Feodor-Lynen-Str. 7, 30625 Hannover, Germany(1)
| | - F Kruse
- Institute of Infection Immunology, TWINCORE, Centre for Experimental and Clinical Infection Research, Feodor-Lynen-Str. 7, 30625 Hannover, Germany(1)
| | - M Thiele
- Institute of Infection Immunology, TWINCORE, Centre for Experimental and Clinical Infection Research, Feodor-Lynen-Str. 7, 30625 Hannover, Germany(1)
| | - M E Gershwin
- Division of Rheumatology, Allergy and Clinical Immunology, University of California at Davis School of Medicine, 451 Health Sciences Drive, Suite 6510, Davis, CA 95616, USA
| | - A Liston
- Autoimmune Genetics Laboratory, VIB, Campus Gasthuisberg, Herestraat 49, 3000 Leuven, Belgium; Department of Immunology and Microbiology, University of Leuven, Leuven, Belgium
| | - T Sparwasser
- Institute of Infection Immunology, TWINCORE, Centre for Experimental and Clinical Infection Research, Feodor-Lynen-Str. 7, 30625 Hannover, Germany(1).
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Lauridsen MM, Thiele M, Kimer N, Vilstrup H. The continuous reaction times method for diagnosing, grading, and monitoring minimal/covert hepatic encephalopathy. Metab Brain Dis 2013; 28:231-4. [PMID: 23299303 DOI: 10.1007/s11011-012-9373-z] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/24/2012] [Accepted: 12/21/2012] [Indexed: 02/07/2023]
Abstract
Existing tests for minimal/covert hepatic encephalopathy (m/cHE) are time- and expertise consuming and primarily useable for research purposes. An easy-to-use, fast and reliable diagnostic and grading tool is needed. We here report on the background, experience, and ongoing research regarding the continuous reaction times (CRT) method. The method has been in clinical use for decades in Denmark for the stated purpose. The method is a 10-minutes, computerised registration of a series of motor reaction times to an auditory stimulus, with results reported as the CRTindex (50 percentile/(90-10) percentile) as a parameter of reaction time variability. The index is a measure of alertness stability and is used to assess attention and cognition deficits. The CRTindex identifies half of patients in a Danish cohort with chronic liver disease, as having m/cHE, a normal value safely precludes HE, it has a broad outcome span reflecting the degree of brain impairment, it shows no learning effect, and it is independent on age and gender. The CRTindex is, therefore, a candidate tool for routine screening, detecting, grading, and monitoring m/cHE. Still, however, further methodological and clinical validation trials are required and are currently being conducted.
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Affiliation(s)
- M M Lauridsen
- Department of Gastroenterology and Hepatology, Hospital of South West Jutland, Finsensgade 35, 6700 Esbjerg, Denmark.
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25
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Affiliation(s)
- K Theede
- Department of Gastroenterology, Copenhagen University Hospital Gentofte, Hellerup, Denmark.
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Thiele M, Krag A, Rohde U, Gluud LL. Meta-analysis: banding ligation and medical interventions for the prevention of rebleeding from oesophageal varices. Aliment Pharmacol Ther 2012; 35:1155-65. [PMID: 22449261 DOI: 10.1111/j.1365-2036.2012.05074.x] [Citation(s) in RCA: 62] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/31/2011] [Revised: 01/24/2012] [Accepted: 03/05/2012] [Indexed: 01/30/2023]
Abstract
BACKGROUND In patients with oesophageal varices, the combination of endoscopic variceal ligation (EVL) and medical therapy is recommended as standard of care for prevention of rebleeding. The results of previous meta-analyses on this topic are equivocal. AIM To assess the effects of EVL plus medical therapy vs. monotherapy (EVL or medical therapy alone) for secondary prevention in oesophageal varices. METHODS Electronic and manual searches were combined. The primary outcome measures were overall rebleeding (variceal and nonvariceal) and mortality. Random-effects meta-analyses were performed with subgroup, sensitivity, regression and sequential analyses to identify sources of intertrial heterogeneity and the robustness of the results. RESULTS Nine randomised trials were included. In total, 442 patients were randomised to combination therapy and 513 to monotherapy. Combination therapy reduced rebleeding (RR = 0.68; 95% CI = 0.54-0.85; number needed to treat eight patients). The result was confirmed in sequential and regression analyses, but not when limiting the analysis to trials with adequate selection bias control. No effect on overall mortality was identified (RR = 0.89; 95% CI = 0.65-1.21). Combination therapy reduced bleeding-related mortality (RR = 0.52; 95% CI 0.27-0.99; number needed to treat 33 patients) and the risk of rebleeding from oesophageal varices. Combination therapy increased the risk of serious adverse events in fixed, but not in random-effects meta-analyses. CONCLUSIONS The combination of endoscopic variceal ligation and medical therapy reduce the risk of rebleeding, but not overall mortality. Additional research is needed to determine why reduced rebleeding rates do not lead to reduced mortality.
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Affiliation(s)
- M Thiele
- Department of Internal Medicine, Copenhagen University Hospital Gentofte, Hellerup, Denmark.
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Thiele M, Gross EKU, Kümmel S. Adiabatic approximation in nonperturbative time-dependent density-functional theory. Phys Rev Lett 2008; 100:153004. [PMID: 18518104 DOI: 10.1103/physrevlett.100.153004] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/22/2007] [Indexed: 05/26/2023]
Abstract
We construct the exact exchange-correlation potential of time-dependent density-functional theory and the approximation to it that is adiabatic but exact otherwise. For the strong-field double ionization of the Helium atom these two potentials are virtually identical. Thus, memory effects play a negligible role in this paradigm process of nonlinear, nonperturbative electron dynamics. We identify the regime of high-frequency excitations where the adiabatic approximation breaks down and explicitly calculate the nonadiabatic contribution to the exchange-correlation potential.
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Affiliation(s)
- M Thiele
- Physikalisches Institut, Universität Bayreuth, Bayreuth, Germany
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Lue H, Thiele M, Franz J, Dahl E, Speckgens S, Leng L, Fingerle-Rowson G, Bucala R, Lüscher B, Bernhagen J. Macrophage migration inhibitory factor (MIF) promotes cell survival by activation of the Akt pathway and role for CSN5/JAB1 in the control of autocrine MIF activity. Oncogene 2007; 26:5046-59. [PMID: 17310986 DOI: 10.1038/sj.onc.1210318] [Citation(s) in RCA: 274] [Impact Index Per Article: 16.1] [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] [Indexed: 02/06/2023]
Abstract
The phosphoinositide-3-kinase (PI3K)/Akt signaling pathway plays an important role in cell survival and the development of cancer. Macrophage migration inhibitory factor (MIF) is a critical inflammatory cytokine that was recently associated with tumorigenesis and that potently inhibits apoptosis. This may involve inhibition of p53-dependent genes, but the initiating molecular mechanism of how MIF controls survival/apoptosis is unknown. Here, we show that MIF prevents apoptosis and promotes tumor cell survival by directly activating the Akt pathway. MIF enhanced Akt activity in primary and immortalized fibroblasts (MEF and NIH/3T3), HeLa cervix carcinoma cells and various breast cancer cell lines. Activation was abolished by kinase inhibitors Ly294002 and PP2 and in Src/Yes/Fyn(SYF)(-/-) and CD74(-/-)(MEFs), while being enhanced in CD74-overexpressing MEFs, demonstrating that the MIF-induced Akt pathway encompasses signaling through the MIF receptor CD74 and the upstream kinases Src and PI3K. Akt was activated by exogenous rMIF and autocrine MIF action, as revealed by experiments in MIF(-/-)MEFs and antibody blockade. siRNA knockdown of CSN5/JAB1, a tumor marker and MIF-binding protein, showed that JAB1 controls autocrine MIF-mediated Akt signaling by inhibition of MIF secretion. Akt activation by MIF led to phosphorylation of the proapoptotic proteins BAD and Foxo3a. Apoptosis inhibition by MIF was functionally associated with Akt activation as it was abolished by overexpression of the Akt pathway inhibitor PTEN and occurred independently of p53. This was shown by studying DNA damage-induced apoptosis in fibroblasts, the Fas death pathway in HeLa cells that do not express functional p53, and etoposide-induced apoptosis in breast carcinoma cells expressing mutant p53. Importantly, dependence of breast cancer cell survival on MIF correlated with Akt activation and the PTEN status of these cells. Thus, MIF can directly promote cell survival through activation of the PI3K/Akt pathway and this effect is critical for tumor cell survival.
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Affiliation(s)
- H Lue
- Department of Biochemistry and Molecular Cell Biology, Institute of Biochemistry, University Hospital RWTH Aachen, Aachen, Germany
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Hoffmann A, Thiele M, Fehlhaber K, Seeger J. Effects of Ozone (O3) on Survival and Development of Chick Embryos After Gas Exposure In Ovo. Anat Histol Embryol 2005. [DOI: 10.1111/j.1439-0264.2005.00669_44.x] [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: 11/30/2022]
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Albers P, Thiele M, Stoss O, Jost N, Schmidtgen C, Rueschoff J, Henkel T. Gene expression analysis of hormone-refractory prostate cancer in transurethral resection samples. J Clin Oncol 2005. [DOI: 10.1200/jco.2005.23.16_suppl.4778] [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. Jost
- Klin Kassel, Kassel, Germany
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Helfritzsch H, Böhm B, Thiele M, Altendorf-Hoffmann A, Scheele J. [Results of the surgical therapy in advanced colorectal cancer]. Zentralbl Chir 2002; 127:302-6. [PMID: 12085280 DOI: 10.1055/s-2002-31558] [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: 10/16/2022]
Abstract
INTRODUCTION In every 7th patient with colorectal cancer tumor has already spread beyond intestinal wall into surrounding organs. PATIENTS AND METHODS Between 01. 01. 1990 and 31. 12. 1998 763 patients with colorectal cancer were treated at our surgical department. 166 patients (23 %) presented with tumor contiguous or adherent to adjacent organs (cT4). RESULTS In most cases tumor was localized in colon (109 patients, 66 %), in 57 patients (34 %) tumor was found in rectum. Potenzial curative resection (R0) was possible in 67 patients (40 %). 66 patients (40 %) had microscopic (R1) or gro beta residual disease (R2) and in 33 patients only palliative surgery was possible. Extended resection of adjacent organs was performed in 97 % in the group with curative resection. 11 patients (8 %) died after multivisceral resection. The 5-year survival for curative resection was 57 %, for patients with microscopic or gro beta residual disease 9 months and for palliative surgery only 4 months. CONCLUSION Optimistic longterm results in advanced colorectal cancer can only be achieved after curative resection. After incomplete resection or palliative surgery median life expectancy is extremely poor.
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Affiliation(s)
- H Helfritzsch
- Klinik für Allgemeine und Viszerale Chirurgie, Universität Jena, Germany.
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Schmidt P, Thiele M, Rudroff C, Vaz A, Schilli M, Friedrich K, Scheele J. Detection of tumor cells in peritoneal lavages from patients with gastrointestinal cancer by multiplex reverse transcriptase PCR. Hepatogastroenterology 2001; 48:1675-9. [PMID: 11813599] [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: 02/23/2023]
Abstract
BACKGROUND/AIMS Cytological examination of peritoneal lavages is a useful predictor of peritoneal recurrence in gastrointestinal carcinoma patients. Nevertheless, it may be inadequate for those patients with lavages containing only few cancer cells. In the present study, sensitive detection of free cancer cells could be achieved through amplification of cytokeratin 19, carcinoembryonic antigen, alpha-fetoprotein mRNAs by means of multiplex reverse transcriptase polymerase chain reaction and nested polymerase chain reaction. METHODOLOGY The multiplex reverse transcriptase polymerase chain reaction assay was used to examine lavage samples from 64 patients with various gastrointestinal malignant lesions (colorectal n = 27; duodenal carcinoma n = 1; gastric n = 7; pancreatic n = 4; hepatocellular carcinoma n = 2; gallbladder n = 1; cholangiocellular carcinoma n = 2 and 20 colorectal liver metastases. Specificity was assessed by examination of 15 donors without malignancies. In addition, nested polymerase chain reaction was used to improve the sensitivity of the assay for the detection of alpha-fetoprotein transcripts. RESULTS Peritoneal lavages from 12 of 64 gastrointestinal carcinoma patients were positive for carcinoembryonic antigen mRNA. Carcinoembryonic antigen proved a specific marker, as no false-positives were detected in any patients without gastrointestinal cancer. alpha-fetoprotein mRNA was detected exclusively in peritoneal lavages from tumor patients, i.e., in 16 of 27 colon cancer patients, 14 of 20 patients with colorectal liver metastasis, 2 of 7 patients with gastric cancer, two patients with hepatocellular carcinoma and 2 of 4 patients with pancreatic cancer. Cytokeratin 19 mRNA was not found a useful marker, since control patients without malignancies were also positive. CONCLUSIONS Our data suggest that carcinoembryonic antigen- and alpha-fetoprotein mRNA in peritoneal lavage are potentially useful specific markers for early diagnosis of metastasis of gastrointestinal cancer. It has been shown that alpha-fetoprotein-specific nested reverse transcriptase polymerase chain reaction can detect not only hepatocellular carcinoma cells, but also malignant cells from other gastrointestinal carcinomas. In contrast, cytokeratin 19 mRNA lacks specificity for gastrointestinal cancer.
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Affiliation(s)
- P Schmidt
- Department of Surgery, Friedrich-Schiller-University, Jena Bachstrasse 18, D-07740 Jena, Germany
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Abstract
UNLABELLED Despite of advanced surgical technique and multimodality therapy results following secondary resection of local recurrence after rectal cancer are discussed controversially. PATIENTS AND METHODS Between 1990 and 1999 81 patients with local recurrence of rectal cancer were treated at our surgical department. Median age was 63 years, 62 % of patients were male. 98 % of recurrences were in local advanced stage (74 % = rT4, 25 % = rT3), 44 % of patients had synchronous distant metastases. RESULTS 32 patients underwent resection of recurrent rectal cancer. Potential curative surgery was possible in 56 % of resections. Extended resections of adjacent organs were necessary in 21 patients. The 4-year survival in the curative group was 44 % compared to 19 % in patients with microscopic or gross residual disease. CONCLUSION Optimistic long-term results in recurrent rectal cancer can only be achieved after curative resection. Preoperative radiochemotherapy in advanced cancers increases curative resection and probably survival rate.
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MESH Headings
- Adenocarcinoma/drug therapy
- Adenocarcinoma/mortality
- Adenocarcinoma/radiotherapy
- Adenocarcinoma/surgery
- Adenocarcinoma, Mucinous/drug therapy
- Adenocarcinoma, Mucinous/mortality
- Adenocarcinoma, Mucinous/radiotherapy
- Adenocarcinoma, Mucinous/surgery
- Antimetabolites, Antineoplastic/administration & dosage
- Antimetabolites, Antineoplastic/therapeutic use
- Combined Modality Therapy
- Drug Therapy, Combination
- Female
- Fluorouracil/administration & dosage
- Fluorouracil/therapeutic use
- Follow-Up Studies
- Humans
- Leucovorin/administration & dosage
- Leucovorin/therapeutic use
- Male
- Middle Aged
- Neoplasm Recurrence, Local/drug therapy
- Neoplasm Recurrence, Local/mortality
- Neoplasm Recurrence, Local/radiotherapy
- Neoplasm Recurrence, Local/surgery
- Preoperative Care
- Radiotherapy Dosage
- Rectal Neoplasms/drug therapy
- Rectal Neoplasms/mortality
- Rectal Neoplasms/radiotherapy
- Rectal Neoplasms/surgery
- Time Factors
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Affiliation(s)
- B Böhm
- Klinik und Poliklinik für Allgemeine und Viszerale Chirurgie, Friedrich-Schiller-Universität Jena, Germany
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Bublitz R, Hoppe H, Cumme GA, Thiele M, Attey A, Horn A. Structural study on the carbohydrate moiety of calf intestinal alkaline phosphatase. J Mass Spectrom 2001; 36:960-972. [PMID: 11523097 DOI: 10.1002/jms.200] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Surprisingly alkaline phosphatase (AP) (EC 3.1.3.1) of calf intestine is found in large amounts, e.g. 80%, within chyme. Most of the enzyme is present as a mixture of four differently hydrophobic anchor-bearing forms and only the minor part is present as an anchorless enzyme. To investigate whether changes in the N-glycosylation pattern are signals responsible for large-scale liberation from mucosa into chyme, the glycans of the two potential glycosylation sites predicted from cDNA were investigated by matrix-assisted laser desorption/ionization and electrospray ionization mass spectrometry in combination with exoglycosidase treatment after tryptic digestion and reversed-phase chromatography. The glycans linked to Asn249 are at least eight different, mainly non-fucosylated, biantennary or triantennary structures with a bisecting N-acetylglucosamine. For the most abundant glycopeptide (40%) the following glycan structure is proposed: [carbostructure: see text]. The glycans linked to Asn410 are a mixture of at least nine, mainly tetraantennary, fucosylated structures with a bisecting N-acetylglucosamine. For the most abundant glycopeptide (35%) the following glycan structure is proposed: [carbostructure: see text]. For the structures the linkage data were deduced from the reported specificities of the exoglycosidases used and the specificities of the transglycosidases active in biosynthesis. The majority of glycans are capped by alpha-galactose residues at their non-reducing termini. In contrast to the glycans linked to other AP isoenzymes, no sialylation was observed. Glycopeptide 'mass fingerprints' of both glycosylation sites and glycan contents do not differ between AP from mucosa and chyme. These results suggest that the observed large-scale liberation of vesicle-bound glycosylphosphatidylinositol (GPI)-anchored AP from mucosa into chyme is unlikely to be mediated by alteration of glycan structures of the AP investigated. Rather, the exocytotic vesicle formation seems to be mediated by the controlled organization of the raft structures embedding GPI-AP. (c) 2001 John Wiley & Sons, Ltd.
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Affiliation(s)
- R Bublitz
- Institute of Biochemistry, Medical Faculty, Friedrich Schiller University, D-07743 Jena, Germany
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Abstract
BACKGROUND The increasing ethnic diversity in the United States necessitates a study of variations in infant feeding patterns among ethnic groups. This study was conducted as part of Hawaii's surveillance system to identify infant feeding patterns in Hawaii; specifically, to identify factors influencing duration of breastfeeding among ethnically diverse mothers. METHODS All women who delivered an infant in Hawaii between January 1 and March 31, 1989, were mailed surveys 14 to 19 months after delivery. Fifty-one percent (n = 2011) of women responded, of whom 1574 (78%) did some breastfeeding and are included in the analysis of prediction of weaning (cessation of breastfeeding). Cox regression (survival) analysis was used to predict weaning. RESULTS The median duration of breastfeeding was 150 days; 45 percent of infants were still breastfeeding at age 6 months and 16 percent at age 1 year. Factors associated with early weaning were Japanese ethnicity; mother born in a country other than the United States, Japan, or the Philippines; first language other than English, or two languages at home; employed full-time outside the home; introduced formula or fruit before age 6 months; received formula from the WIC program; and stopped breastfeeding for convenience, breast problems, problems getting breastfeeding started, insufficient milk, baby refusing the breast, and a sick baby. Factors associated with late weaning were older maternal age; college education; living on a rural island; previous breastfeeding experience; helpful breastfeeding advice from family or friends; receiving WIC for breastfeeding mothers; introducing the cup before age 6 months; and not giving fruit to the baby. CONCLUSION In Hawaii, programs that address how and when to introduce foods, use of formula, and management of outside employment and breastfeeding should be made available to those groups of women at risk for early weaning to lengthen their duration of breastfeeding.
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Affiliation(s)
- R Novotny
- Department of Food Science and Human Nutrition, College of Tropical Agriculture and Human Resources, University of Hawaii at Manoa, Honolulu 96822, USA
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Nickel H, Wouters Y, Thiele M, Quadakkers WJ. The effect of water vapor on the oxidation behavior of 9%Cr steels in simulated combustion gases. ACTA ACUST UNITED AC 1998. [DOI: 10.1007/s002160050942] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Kieffer EC, Novotny R, Welch KB, Mor JM, Thiele M. Health practitioners should consider parity when counseling mothers on decisions about infant feeding methods. J Am Diet Assoc 1997; 97:1313-6. [PMID: 9366872 DOI: 10.1016/s0002-8223(97)00313-1] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
- E C Kieffer
- Department of Health Behavior and Health Education, School of Public Health, University of Michigan, Ann Arbor 48109-2029, USA
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Affiliation(s)
- D L Goldberg
- Shriver Center University Affiliated Program, Waltham, Mass 02154, USA
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Bartels I, Bockel B, Caesar J, Krawczak M, Thiele M, Rauskolb R. Risk of fetal Down's syndrome based on maternal age and varying combinations of maternal serum markers. Arch Gynecol Obstet 1994; 255:57-64. [PMID: 7522430 DOI: 10.1007/bf02391798] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [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: 01/25/2023]
Abstract
Serum samples from 320 women with chromosomally normal fetuses and from 50 women with fetuses affected by Down's syndrome were assayed retrospectively for human chorionic gonadotropin (hCG), pregnancy-specific beta 1 glycoprotein (SP1), alpha fetoprotein (AFP), and unconjugated estriol (uE3) between 14 and 21 weeks of gestation. Nonparametric discriminant analysis was applied to calculate Down syndrome risks on the basis of various combinations of serum parameters. At a risk threshold that falsely identifies 5% of controls as being affected, 46 to 48% of Down syndrome pregnancies were detected by combinations of hCG/AFP, hCG/AFP/uE3, and hCG/AFP/uE3/SP1 respectively. HCG, AFP, and uE3 were assayed in 652 serum samples from women who underwent amniocentesis because of maternal age (> or equal to 35 years in this prospective study). 49% of women with euploid fetal karyotype, 8 of 10 pregnancies with Down's syndrome, and 3 pregnancies with sex chromosomal anomalies were identified as being at an increased risk (> 1:380).
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Affiliation(s)
- I Bartels
- Institut für Humangenetik, Universität Göttingen, Germany
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Novotny R, Kieffer EC, Mor J, Thiele M, Nikaido M. Health of infant is the main reason for breast-feeding in a WIC population in Hawaii. J Am Diet Assoc 1994; 94:293-7. [PMID: 8120294 DOI: 10.1016/0002-8223(94)90371-9] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
OBJECTIVE To determine factors influencing infant feeding method choices among women who received services from the Special Supplemental Food Program for Women, Infants, and Children (WIC) during pregnancy in Hawaii. DESIGN A retrospective survey mailed to all resident mothers who had live births in Hawaii between January 1, 1989, and March 31, 1989, and who received WIC services during pregnancy. SETTING The state of Hawaii. SUBJECTS The subjects were 322 mothers who received WIC services during pregnancy for whom data were complete, taken from a sample of 2,013 women who had live births in the state of Hawaii (51% response rate) between January 1, 1989, and March 31, 1989, of whom 324 participated in WIC during pregnancy. MAIN OUTCOME MEASURES Infant feeding method (exclusive breast, exclusive formula or mixed) at hospital discharge. STATISTICAL ANALYSES PERFORMED The chi 2 analysis for differences among feeding method groups and multiple logistic regression to calculate odds ratios for independent effects of maternal characteristics and other influences on feeding method choice. RESULTS Reasons for infant feeding choice, timing of the choice, maternal age, parity, and place of residence were the main factor influencing infant method choice. Health of the infant was the primary reason for choice of feeding method and was the strongest determinant of exclusive breast-feeding (odds ratio = 23.99; confidence interval = 9.75-59.02; P < .0001) and was negatively related to the choice to formula-feed (odds ratio = 0.03; confidence interval = 0.01-0.08; P < .0001). APPLICATIONS Relationship between WIC and hospital lactation consultants could enhance follow up in the hospital and after returning home with WIC mothers who prenatally state an intention to breast-feed. Convenience and bonding are aspects of breast-feeding enjoyed by WIC mothers in Hawaii that could be used in breast-feeding promotion efforts.
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Affiliation(s)
- R Novotny
- Department of Food Science and Human Nutrition, University of Hawaii, Manoa, Honolulu 96822
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Caesar J, Bockel B, Krawczak M, Thiele M, Hoppe-Sievert B, Bartels I. Prenatal screening for Down's syndrome. Reprod Toxicol 1992. [DOI: 10.1016/0890-6238(92)90125-d] [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]
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Abstract
In a retrospective study, maternal serum levels of chorionic gonadotropin (hCG) and pregnancy specific beta 1-glycoprotein (SP1) from 63 pregnancies with aneuploid fetuses were compared to the levels observed in pregnancies with a chromosomally normal fetus. Thirty-eight percent of the abnormal pregnancies had elevated levels (greater than 2.0 multiples of the normal median [MoM]) of hCG and 14% had depressed levels (less than 0.25 MoM). With a false-positive rate of 5%, 44% of the 42 fetuses with trisomy 21 would have been detected by elevated hCG levels. With the same false-positive rate, only 21% had elevated SP1 levels. hCG was significantly depressed in 12 pregnancies affected by fetal trisomy 18.
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Affiliation(s)
- I Bartels
- Institut für Humangenetik, Universitat Göttingen, West Germany
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Krantz S, Lober M, Thiele M, Teuscher E. Diminished adhesion of endothelial aortic cells on fibronectin and collagen layers after nonenzymatic glycation. Exp Clin Endocrinol 1988; 91:155-60. [PMID: 3409968 DOI: 10.1055/s-0029-1210738] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Adhesion of bovine endothelial cells on fibronectin and collagen before and after nonenzymatic glycation in vitro has been studied. Nonenzymatic glycation of these proteins reduced their ability to bind endothelial cells. Furthermore, nonenzymatically glycated fibronectin failed to bind to normal and nonenzymatically glycated gelatin and to fibrin. So gelatin and fibrin Sepharoses can be used to separate highly glycated fibronectins from fibronectins with a low degree of nonenzymatic glucose substitution. Sodium dodecylsulfate polyacrylamide gel electrophoresis did not demonstrate a covalent cross-link between nonenzymatically glycated fibronectins. These results present further evidences for the role of nonenzymatic glycation of proteins in the development of vascular complications in long-term diabetes and of atherosclerosis.
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Affiliation(s)
- S Krantz
- Institute of Biochemistry, Ernst Moritz Arndt University, Greifswald/GDR
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Abstract
Nonenzymatic glycation of fibrinogen is species independent and depends only on the glucose concentration in the incubation mixture under selected in vitro conditions. An increased fibrin monomer aggregation in the presence of Ca2+ ions and a decreased proteolytic susceptibility of nonenzymatically glycated fibrinogens may favour the development of thrombophilic states. Blocking of lysine residues as well as restricted conformational changes induced by glucose attachment may be responsible for these effects. Fibrin stabilization by factor XIII is not impaired by nonenzymatic glycation of fibrinogen. Attachment of aortic endothelial cells to fibrin films from glycated fibrinogens is diminished. This phenomenon may be the result of blocked plasminogen activator binding sites in fibrin by nonenzymatic glycation. These effects may contribute in vivo to the accumulation of fibrin in those tissues most frequently affected by diabetic complications.
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Affiliation(s)
- S Krantz
- Institute of Biochemistry, Ernst Moritz Arndt University, Greifswald, GDR
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Külz J, Thiele M, Rogge R. [Current aspects of rubella embryopathy]. Kinderarztl Prax 1985; 53:47-56. [PMID: 3887002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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Thiele M, Hankin JH. Training nutritionists for comprehensive health delivery systems. J Am Diet Assoc 1977; 70:189-91. [PMID: 839031] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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Thiele M, Stieglitz R, Stobbe H, Wegner G. [Proposal of a program of controlled hematologic studies in thorium X therapy of Bechterew's disease]. Beitr Orthop Traumatol 1973; 20:310-5. [PMID: 4750721] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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