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Krug R, Schwarz F, Dullin C, Leontiev W, Connert T, Krastl G, Haupt F. Removal of fiber posts using conventional versus guided endodontics: a comparative study of dentin loss and complications. Clin Oral Investig 2024; 28:192. [PMID: 38438798 PMCID: PMC10912265 DOI: 10.1007/s00784-024-05577-7] [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: 01/04/2024] [Accepted: 02/24/2024] [Indexed: 03/06/2024]
Abstract
OBJECTIVES To compare the efficacy of fiber post removal using conventional (CONV) versus guided endodontics (GE) in terms of dentin loss, residual resin material, procedural errors, and working time in vitro. MATERIAL AND METHODS Ninety human central incisors were root-filled and scanned by micro-computed tomography (CT), then restored with fiber posts and composite. Twenty-four sets of teeth with up to four human maxillary central incisors were fabricated and divided into three groups: conventional post removal by a general dentist (CG) or endodontology specialist (CS) and guided endodontics (GE) by a general dentist, yielding 30 teeth per operator and group. After treatment, the prepared access cavities were volumetrically assessed by micro-CT. Statistical significance was evaluated by one-way analysis of variance followed by post hoc comparisons with Tukey's HSD test and Pearson's chi-squared test for independence. RESULTS Both CONV and GE resulted in dentin loss and residual resin material. CS resulted in more dentin loss and less residual resin material than CG and GE (p < .05). All groups had some deviations from the original root canal but no perforations. The shortest working time was observed in the GE group. CONCLUSIONS Compared to the conventional freehand technique, GE resulted in significantly less radicular dentin loss, a few deviations but no perforations. CLINICAL RELEVANCE Guided endodontics can improve the speed and safety of fiber post removal without root perforation.
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Affiliation(s)
- R Krug
- Department of Conservative Dentistry and Periodontology and Center of Dental Traumatology, University Hospital of Würzburg, Pleicherwall 2, 97070, Würzburg, Germany.
| | - F Schwarz
- Department of Conservative Dentistry and Periodontology and Center of Dental Traumatology, University Hospital of Würzburg, Pleicherwall 2, 97070, Würzburg, Germany
| | - C Dullin
- Department for Preventive Dentistry, Periodontology and Cariology, University Medical Center Göttingen, Göttingen, Germany
| | - W Leontiev
- Department of Periodontology, Endodontology and Cariology, University Center for Dental Medicine, University of Basel, Basel, Switzerland
| | - T Connert
- Department of Periodontology, Endodontology and Cariology, University Center for Dental Medicine, University of Basel, Basel, Switzerland
| | - G Krastl
- Department of Conservative Dentistry and Periodontology and Center of Dental Traumatology, University Hospital of Würzburg, Pleicherwall 2, 97070, Würzburg, Germany
| | - F Haupt
- Department for Preventive Dentistry, Periodontology and Cariology, University Medical Center Göttingen, Göttingen, Germany
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Tuleja A, Bernhard S, Hamvas G, Andreoti TA, Rössler J, Boon L, Vikkula M, Kammer R, Haupt F, Döring Y, Baumgartner I. Clinical phenotype of adolescent and adult patients with extracranial vascular malformation. J Vasc Surg Venous Lymphat Disord 2023; 11:1034-1044.e3. [PMID: 37030445 DOI: 10.1016/j.jvsv.2023.03.012] [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] [Received: 10/14/2022] [Revised: 03/08/2023] [Accepted: 03/08/2023] [Indexed: 04/10/2023]
Abstract
OBJECTIVE In recent years, genotypic characterization of congenital vascular malformations (CVMs) has gained attention; however, the spectrum of clinical phenotype remains difficult to attribute to a genetic cause and is rarely described in the adult population. The aim of this study is to describe a consecutive series of adolescent and adult patients in a tertiary center, where a multimodal phenotypic approach was used for diagnosis. METHODS We analyzed clinical findings, imaging, and laboratory results at initial presentation, and set a diagnosis according to the International Society for the Study of Vascular Anomalies (ISSVA) classification for all consecutively registered patients older than 14 years of age who were referred to the Center for Vascular Malformations at the University Hospital of Bern between 2008 and 2021. RESULTS A total of 457 patients were included for analysis (mean age, 35 years; females, 56%). Simple CVMs were the most common (n = 361; 79%), followed by CVMs associated with other anomalies (n = 70; 15%), and combined CVMs (n = 26; 6%). Venous malformations (n = 238) were the most common CVMs overall (52%), and the most common simple CVMs (66%). Pain was the most frequently reported symptom in all patients (simple, combined, and vascular malformation with other anomalies). Pain intensity was more pronounced in simple venous and arteriovenous malformations. Clinical problems were related to the type of CVM diagnosed, with bleeding and skin ulceration in arteriovenous malformations, localized intravascular coagulopathy in venous malformations, and infectious complications in lymphatic malformations. Limb length difference occurred more often in patients with CVMs associated with other anomalies as compared with simple or combined CVM (22.9 vs 2.3%; P < .001). Soft tissue overgrowth was seen in one-quarter of all patients independent of the ISSVA group. CONCLUSIONS In our adult and adolescent population with peripheral vascular malformations, simple venous malformations predominated, with pain as the most common clinical symptom. In one-quarter of cases, patients with vascular malformations presented with associated anomalies on tissue growth. The differentiation of clinical presentation with or without accompanying growth abnormalities need to be added to the ISSVA classification. Phenotypic characterization considering vascular and non-vascular features remains the cornerstone of diagnosis in adult as well as pediatric patients.
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Affiliation(s)
- Aleksandra Tuleja
- Division of Angiology, Swiss Cardiovascular Center, Inselspital, Bern University, Hospital, Bern, Switzerland; Graduate School for Health Sciences, University of Bern, Bern, Switzerland.
| | - Sarah Bernhard
- Division of Angiology, Swiss Cardiovascular Center, Inselspital, Bern University, Hospital, Bern, Switzerland
| | - Györgyi Hamvas
- Division of Angiology, Swiss Cardiovascular Center, Inselspital, Bern University, Hospital, Bern, Switzerland
| | - Themis-Areti Andreoti
- Division of Pediatric Hematology and Oncology, Department of Pediatrics, Inselspital - University Hospital of Bern, University of Bern, Bern, Switzerland; Graduate School for Health Sciences, University of Bern, Bern, Switzerland
| | - Jochen Rössler
- Division of Pediatric Hematology and Oncology, Department of Pediatrics, Inselspital - University Hospital of Bern, University of Bern, Bern, Switzerland
| | - Laurence Boon
- Center for Vascular Anomalies, Division of Plastic Surgery, VASCERN VASCA European Reference Centre, Saint Luc University Hospital, Brussels, Belgium
| | - Miikka Vikkula
- Center for Vascular Anomalies, Division of Plastic Surgery, VASCERN VASCA European Reference Centre, Saint Luc University Hospital, Brussels, Belgium; Human Molecular Genetics, de Duve Institute, University of Louvain, Brussels, Belgium
| | - Rafael Kammer
- Division of Angiology, Swiss Cardiovascular Center, Inselspital, Bern University, Hospital, Bern, Switzerland
| | - Fabian Haupt
- Department of Radiology, Inselspital, Bern University, Hospital, Bern, Switzerland
| | - Yvonne Döring
- Division of Angiology, Swiss Cardiovascular Center, Inselspital, Bern University, Hospital, Bern, Switzerland; Department for BioMedical Research (DBMR), University of Bern, Bern, Switzerland; Institute for Cardiovascular Prevention (IPEK), Ludwig-Maximilians-University Munich (LMU), Munich, Germany; DZHK (German Centre for Cardiovascular Research), Partner Site Munich Heart Alliance, Munich, Germany
| | - Iris Baumgartner
- Division of Angiology, Swiss Cardiovascular Center, Inselspital, Bern University, Hospital, Bern, Switzerland
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Stokes C, Ahmed D, Lind N, Haupt F, Becker D, Hamilton J, Muthurangu V, von Tengg-Kobligk H, Papadakis G, Balabani S, Díaz-Zuccarini V. Aneurysmal growth in type-B aortic dissection: assessing the impact of patient-specific inlet conditions on key haemodynamic indices. J R Soc Interface 2023; 20:20230281. [PMID: 37727072 PMCID: PMC10509589 DOI: 10.1098/rsif.2023.0281] [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: 05/16/2023] [Accepted: 08/29/2023] [Indexed: 09/21/2023] Open
Abstract
Type-B aortic dissection is a cardiovascular disease in which a tear develops in the intimal layer of the descending aorta, allowing pressurized blood to delaminate the layers of the vessel wall. In medically managed patients, long-term aneurysmal dilatation of the false lumen (FL) is considered virtually inevitable and is associated with poorer disease outcomes. While the pathophysiological mechanisms driving FL dilatation are not yet understood, haemodynamic factors are believed to play a key role. Computational fluid dynamics (CFD) and 4D-flow MRI (4DMR) analyses have revealed correlations between flow helicity, oscillatory wall shear stress and aneurysmal dilatation of the FL. In this study, we compare CFD simulations using a patient-specific, three-dimensional, three-component inlet velocity profile (4D IVP) extracted from 4DMR data against simulations with flow rate-matched uniform and axial velocity profiles that remain widely used in the absence of 4DMR. We also evaluate the influence of measurement errors in 4DMR data by scaling the 4D IVP to the degree of imaging error detected in prior studies. We observe that oscillatory shear and helicity are highly sensitive to inlet velocity distribution and flow volume throughout the FL and conclude that the choice of IVP may greatly affect the future clinical value of simulations.
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Affiliation(s)
- C. Stokes
- Department of Mechanical Engineering, University College London, London, UK
- Wellcome-EPSRC Centre for Interventional Surgical Sciences, London, UK
| | - D. Ahmed
- Department of Aeronautics, Imperial College London, London, UK
| | - N. Lind
- Department of Diagnostic, Interventional and Pediatric Radiology, Inselspital, University of Bern, Bern, Switzerland
| | - F. Haupt
- Department of Diagnostic, Interventional and Pediatric Radiology, Inselspital, University of Bern, Bern, Switzerland
| | - D. Becker
- Clinic of Vascular Surgery, Inselspital, University of Bern, Bern, Switzerland
| | - J. Hamilton
- Department of Mechanical Engineering, University College London, London, UK
| | - V. Muthurangu
- Centre for Translational Cardiovascular Imaging, University College London, London, UK
| | - H. von Tengg-Kobligk
- Department of Diagnostic, Interventional and Pediatric Radiology, Inselspital, University of Bern, Bern, Switzerland
| | - G. Papadakis
- Department of Aeronautics, Imperial College London, London, UK
| | - S. Balabani
- Department of Mechanical Engineering, University College London, London, UK
- Wellcome-EPSRC Centre for Interventional Surgical Sciences, London, UK
| | - V. Díaz-Zuccarini
- Department of Mechanical Engineering, University College London, London, UK
- Wellcome-EPSRC Centre for Interventional Surgical Sciences, London, UK
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Stokes C, Haupt F, Becker D, Muthurangu V, von Tengg-Kobligk H, Balabani S, Díaz-Zuccarini V. The Influence of Minor Aortic Branches in Patient-Specific Flow Simulations of Type-B Aortic Dissection. Ann Biomed Eng 2023; 51:1627-1644. [PMID: 36967447 PMCID: PMC10264290 DOI: 10.1007/s10439-023-03175-4] [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: 11/01/2022] [Accepted: 02/19/2023] [Indexed: 03/28/2023]
Abstract
Type-B aortic dissection (TBAD) is a disease in which a tear develops in the intimal layer of the descending aorta forming a true lumen and false lumen (FL). Because disease outcomes are thought to be influenced by haemodynamic quantities such as pressure and wall shear stress (WSS), their analysis via numerical simulations may provide valuable clinical insights. Major aortic branches are routinely included in simulations but minor branches are virtually always neglected, despite being implicated in TBAD progression and the development of complications. As minor branches are estimated to carry about 7-21% of cardiac output, neglecting them may affect simulation accuracy. We present the first simulation of TBAD with all pairs of intercostal, subcostal and lumbar arteries, using 4D-flow MRI (4DMR) to inform patient-specific boundary conditions. Compared to an equivalent case without minor branches, their inclusion improved agreement with 4DMR velocities, reduced time-averaged WSS (TAWSS) and transmural pressure and elevated oscillatory shear in regions where FL dilatation and calcification were observed in vivo. Minor branch inclusion resulted in differences of 60-75% in these metrics of potential clinical relevance, indicating a need to account for minor branch flow loss if simulation accuracy is sought.
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Affiliation(s)
- C Stokes
- Department of Mechanical Engineering, University College London, London, UK
- Wellcome-EPSRC Centre for Interventional Surgical Sciences, University College London, London, UK
| | - F Haupt
- Department of Diagnostic, Interventional and Pediatric Radiology, Inselspital, University of Bern, Bern, Switzerland
| | - D Becker
- Clinic of Vascular Surgery, Inselspital, University of Bern, Bern, Switzerland
| | - V Muthurangu
- Centre for Translational Cardiovascular Imaging, University College London, London, UK
| | - H von Tengg-Kobligk
- Department of Diagnostic, Interventional and Pediatric Radiology, Inselspital, University of Bern, Bern, Switzerland
| | - S Balabani
- Department of Mechanical Engineering, University College London, London, UK
- Wellcome-EPSRC Centre for Interventional Surgical Sciences, University College London, London, UK
| | - V Díaz-Zuccarini
- Department of Mechanical Engineering, University College London, London, UK.
- Wellcome-EPSRC Centre for Interventional Surgical Sciences, University College London, London, UK.
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Peters AA, Wagner B, Spano G, Haupt F, Ebner L, Kunze KP, Schmidt M, Neji R, Botnar R, Prieto C, Jung B, Christe A, Gräni C, Huber AT. Myocardial scar detection in free-breathing Dixon-based fat- and water-separated 3D inversion recovery late-gadolinium enhancement whole heart MRI. Int J Cardiovasc Imaging 2023; 39:135-144. [PMID: 36598693 PMCID: PMC9813059 DOI: 10.1007/s10554-022-02701-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/14/2022] [Accepted: 07/22/2022] [Indexed: 01/09/2023]
Abstract
The aim of this study was to investigate the diagnostic accuracy and reader confidence for late-gadolinium enhancement (LGE) detection of a novel free-breathing, image-based navigated 3D whole-heart LGE sequence with fat-water separation, compared to a free-breathing motion-corrected 2D LGE sequence in patients with ischemic and non-ischemic cardiomyopathy. Cardiac MRI patients including the respective sequences were retrospectively included. Two independent, blinded readers rated image quality, depiction of segmental LGE and documented acquisition time, SNR, CNR and amount of LGE. Results were compared using the Friedman or the Kruskal-Wallis test. For LGE rating, a jackknife free-response receiver operating characteristic analysis was performed with a figure of merit (FOM) calculation. Forty-two patients were included, thirty-two were examined with a 1.5 T-scanner and ten patients with a 3 T-scanner. The mean acquisition time of the 2D sequence was significantly shorter compared to the 3D sequence (07:12 min vs. 09:24 min; p < 0.001). The 3D scan time was significantly shorter when performed at 3 T compared to 1.5 T (07:47 min vs. 09:50 min; p < 0.001). There were no differences regarding SNR, CNR or amount of LGE. 3D imaging had a significantly higher FOM (0.89 vs. 0.78; p < 0.001). Overall image quality ratings were similar, but 3D sequence ratings were higher for fine anatomical structures. Free-breathing motion-corrected 3D LGE with high isotropic resolution results in enhanced LGE-detection with higher confidence and better delineation of fine structures. The acquisition time for 3D imaging was longer, but may be reduced by performing on a 3 T-scanner.
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Affiliation(s)
- Alan A Peters
- Department of Diagnostic, Interventional and Pediatric Radiology, Inselspital, Bern University Hospital, University of Bern, Freiburgstrasse, 3010, Bern, Switzerland.
| | - Benedikt Wagner
- Department of Diagnostic, Interventional and Pediatric Radiology, Inselspital, Bern University Hospital, University of Bern, Freiburgstrasse, 3010, Bern, Switzerland
| | - Giancarlo Spano
- Department of Cardiology, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
| | - Fabian Haupt
- Department of Diagnostic, Interventional and Pediatric Radiology, Inselspital, Bern University Hospital, University of Bern, Freiburgstrasse, 3010, Bern, Switzerland
| | - Lukas Ebner
- Department of Diagnostic, Interventional and Pediatric Radiology, Inselspital, Bern University Hospital, University of Bern, Freiburgstrasse, 3010, Bern, Switzerland
| | | | - Michaela Schmidt
- Cardiovascular MR Predevelopment, Siemens Healthcare GmbH, Erlangen, Germany
| | - Radhouene Neji
- MR Research Collaborations, Siemens Healthcare Limited, Frimley, UK
- School of Biomedical Engineering and Imaging Sciences, King's College London, St Thomas' Hospital, London, UK
| | - René Botnar
- School of Biomedical Engineering and Imaging Sciences, King's College London, St Thomas' Hospital, London, UK
| | - Claudia Prieto
- School of Biomedical Engineering and Imaging Sciences, King's College London, St Thomas' Hospital, London, UK
| | - Bernd Jung
- Department of Diagnostic, Interventional and Pediatric Radiology, Inselspital, Bern University Hospital, University of Bern, Freiburgstrasse, 3010, Bern, Switzerland
| | - Andreas Christe
- Department of Diagnostic, Interventional and Pediatric Radiology, Inselspital, Bern University Hospital, University of Bern, Freiburgstrasse, 3010, Bern, Switzerland
| | - Christoph Gräni
- Department of Cardiology, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
| | - Adrian T Huber
- Department of Diagnostic, Interventional and Pediatric Radiology, Inselspital, Bern University Hospital, University of Bern, Freiburgstrasse, 3010, Bern, Switzerland.
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Abstract
ABSTRACT A 70-year-old man presented with unspecific abdominal symptoms and weight loss was referred for a sonographic examination. Sonography revealed 3 cystic hepatic masses in an otherwise unremarkable liver. Contrast-enhanced MRI of the liver was performed to characterize the hepatic lesions and elucidate their etiology. The differential diagnosis was primarily parasitic disease or metastases with cystic transformations. 68Ga-DOTATOC PET/CT revealed the neuroendocrine origin of these lesions, confirmed by biopsy. However, the primary site of the neuroendocrine tumor remained unclear, leaving primary hepatic neuroendocrine tumor and neuroendocrine cancer of unknown primary as possible diagnostic options.
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Affiliation(s)
- Fabian Haupt
- From the Departments of Diagnostic, Interventional, and Pediatric Radiology
| | - Ali Afshar-Oromieh
- Nuclear Medicine, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
| | | | | | - Martin Maurer
- From the Departments of Diagnostic, Interventional, and Pediatric Radiology
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Bernhard SM, Tuleja A, Laine JE, Haupt F, Häberli D, Hügel U, Rössler J, Schindewolf M, Baumgartner I. Clinical presentation of simple and combined or syndromic arteriovenous malformations. J Vasc Surg Venous Lymphat Disord 2021; 10:705-712. [PMID: 34649003 DOI: 10.1016/j.jvsv.2021.10.002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [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: 06/04/2021] [Accepted: 10/03/2021] [Indexed: 01/08/2023]
Abstract
OBJECTIVE Arteriovenous malformations of the lower extremities (AVMLE) can present as simple or complex combined or syndromic forms (eg, Parkes Weber Syndrome). We aimed to characterize the differences in clinical presentation and natural history of these potentially life- and limb-threatening congenital vascular malformations. METHODS We conducted a retrospective analysis of a consecutive series of patients with AVMLE who presented to a tertiary referral center in Switzerland between 2008 and 2018. Clinical baseline characteristics, D-dimer level, and course were summarized and differences between simple, non-syndromic and combined or syndromic AVMLE determined. Odds ratios (ORs) and 95% confidence intervals (CIs) were estimated using logistic regression models. RESULTS Overall, 506 patients were prospectively enrolled in the Bernese Congenital Vascular Malformation Registry, 31 (6%) with AVMLE. There were 16 women and 15 men, with a mean age of 18 years at first diagnosis (range, 1 month to 72 years). Simple AVMLE was present in 22 (71%) and combined or syndromic AVMLE with limb overgrowth in 9 patients (29%), respectively. Common symptoms and signs were pain (n = 25; 81%), swelling (n = 21; 68%), and soft tissue hypertrophy (n = 13; 42%). Among combined or syndromic patients, three patients died from wound infection with sepsis or disseminated intravascular coagulation with bleeding complications (intracranial hemorrhage and bleeding from extensive leg ulcers). Combined or syndromic patients presented more often with bleeding (67% vs 5%; P < .001), malformation-related infection (44% vs 5%; P = .017) and leg length difference (56% vs 14%; P = .049). D-dimer levels were elevated (mean, 17,256 μg/L; range, 1557-80,000 μg/L) and angiographic appearance showed complex, mixed type of AVMs, including interstitial type IV, in all patients with combined or syndromic AVMLE. CONCLUSIONS Patients with congenital simple AVMLE most often present with benign clinical features and rarely with complications related to hemodynamic changes. Patients with combined or syndromic AVMLE often face serious outcomes dominated by complications other than direct high-flow-related heart failure.
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Affiliation(s)
- Sarah M Bernhard
- Division of Angiology, Swiss Cardiovascular Center, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
| | - Aleksandra Tuleja
- Division of Angiology, Swiss Cardiovascular Center, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
| | - Jessica E Laine
- Division of Angiology, Swiss Cardiovascular Center, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland; Institute of Social and Preventive Medicine (ISPM), University of Bern, Bern, Switzerland
| | - Fabian Haupt
- Department of Diagnostic, Interventional and Pediatric Radiology, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
| | - Dario Häberli
- Division of Angiology, Swiss Cardiovascular Center, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
| | - Ulrike Hügel
- Division of Angiology, Swiss Cardiovascular Center, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
| | - Jochen Rössler
- Pediatric Hematology/Oncology, Department of Pediatrics, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
| | - Marc Schindewolf
- Division of Angiology, Swiss Cardiovascular Center, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
| | - Iris Baumgartner
- Division of Angiology, Swiss Cardiovascular Center, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland.
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Haupt F, Prosch H, Ebner L. Thyroid atrophy and pancreatic involution after cancer Immunotherapy. ROFO-FORTSCHR RONTG 2020; 192:688-690. [PMID: 32193884 DOI: 10.1055/a-1108-1934] [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: 10/24/2022]
Affiliation(s)
- Fabian Haupt
- Department of Diagnostic, Interventional and Pediatric Radiology, Inselspital University Hospital Bern, Switzerland
| | - Helmut Prosch
- Department of Biomedical Imaging and Image-guided Therapy, Medical University of Vienna, Austria
| | - Lukas Ebner
- Department of Diagnostic, Interventional and Pediatric Radiology, Inselspital University Hospital Bern, Switzerland
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Zhao Y, Gafita A, Tetteh G, Haupt F, Afshar-Oromieh A, Menze B, Eiber M, Rominger A, Shi K. Deep Neural Network for Automatic Characterization of Lesions on 68Ga-PSMA PET/CT Images. Annu Int Conf IEEE Eng Med Biol Soc 2020; 2019:951-954. [PMID: 31946051 DOI: 10.1109/embc.2019.8857955] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
The emerging PSMA-targeted radionuclide therapy provides an effective method for the treatment of advanced metastatic prostate cancer. To optimize the therapeutic effect and maximize the theranostic benefit, there is a need to identify and quantify target lesions prior to treatment. However, this is extremely challenging considering that a high number of lesions of heterogeneous size and uptake may distribute in a variety of anatomical context with different backgrounds. This study proposes an end-to-end deep neural network to characterize the prostate cancer lesions on PSMA imaging automatically. A 68Ga-PSMA-11 PET/CT image dataset including 71 patients with metastatic prostate cancer was collected from three medical centres for training and evaluating the proposed network. For proof-of-concept, we focus on the detection of bone and lymph node lesions in the pelvic area suggestive for metastases of prostate cancer. The preliminary test on pelvic area confirms the potential of deep learning methods. Increasing the amount of training data may further enhance the performance of the proposed deep learning method.
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Haupt F, Dijkstra L, Alberts I, Sachpekidis C, Fech V, Boxler S, Gross T, Holland-Letz T, Zacho HD, Haberkorn U, Rahbar K, Rominger A, Afshar-Oromieh A. 68Ga-PSMA-11 PET/CT in patients with recurrent prostate cancer-a modified protocol compared with the common protocol. Eur J Nucl Med Mol Imaging 2019; 47:624-631. [PMID: 31673789 DOI: 10.1007/s00259-019-04548-5] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [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: 08/02/2019] [Accepted: 09/24/2019] [Indexed: 10/25/2022]
Abstract
PURPOSE 68Ga-PSMA-11 PET/CT is commonly performed at 1 h post injection (p.i.). However, various publications have demonstrated that most prostate cancer (PC) lesions exhibit higher contrast at later imaging. The aim of this study was to compare the "common" protocol of 68Ga-PSMA-11 PET/CT with a modified protocol. METHODS In 2017, we used the following scanning protocol for 68Ga-PSMA-11 PET/CT in patients with recurrent PC: acquisition at 1 h p.i. without further preparations. From 2018, all scans were conducted at 1.5 h p.i. In addition, patients were orally hydrated with 1 L of water 0.5 h p.i. and were injected with 20 mg of furosemide 1 h p.i. Both protocols including 112 patients (2017) and 156 (modified protocol in 2018) were retrospectively compared. Rates of pathologic scans, maximum standardized uptake values (SUVmax), and tumor contrast (ratio lesion-SUVmax/background-SUVmean) as well as average standardized uptake values (SUVmean) of urinary bladder were analyzed. RESULTS Both tumor contrast and tracer uptake were significantly (p < 0.001) higher in the novel protocol. Although statistically not significant, the rates of pathologic scans were also higher in the modified protocol: 76.3% vs. 68.8% for all PSA values including 38.9% vs. 25.0% for PSA < 0.5 ng/ml and 60.0% vs. 56.7% for PSA > 0.5-≤ 2.0 ng/ml. Average SUVmean of the urinary bladder was significantly (p < 0.001) lower with the modified protocol. CONCLUSIONS The modified protocol, which includes a combination of delayed image acquisition at 1.5 h p.i., hydration, and furosemide resulted in higher tumor contrast and seems to have the potential to increase the rates of pathological scans, especially at low PSA levels.
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Affiliation(s)
- Fabian Haupt
- Department of Nuclear Medicine, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland.,Department of Radiology, Bern University Hospital, Bern, Switzerland
| | - Lotte Dijkstra
- Department of Nuclear Medicine, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
| | - Ian Alberts
- Department of Nuclear Medicine, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
| | - Christos Sachpekidis
- Department of Nuclear Medicine, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
| | - Viktor Fech
- Department of Nuclear Medicine, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
| | - Silvan Boxler
- Department of Urology, Bern University Hospital, Bern, Switzerland
| | - Tobias Gross
- Department of Urology, Bern University Hospital, Bern, Switzerland
| | - Tim Holland-Letz
- Department of Biostatistics, German Cancer Research Center, Heidelberg, Germany
| | - Helle D Zacho
- Department of Clinical Medicine, Aalborg University, Aalborg, Denmark
| | - Uwe Haberkorn
- Department of Nuclear Medicine, University Hospital Heidelberg, Heidelberg, Germany.,Clinical Cooperation Unit Nuclear Medicine, DKFZ, Heidelberg, Germany
| | - Kambiz Rahbar
- Department of Nuclear Medicine, University Hospital Münster, Münster, Germany
| | - Axel Rominger
- Department of Nuclear Medicine, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
| | - Ali Afshar-Oromieh
- Department of Nuclear Medicine, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland.
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Ungethüm K, Jolink M, Hippich M, Lachmann L, Haupt F, Winkler C, Hummel S, Pitchika A, Kordonouri O, Ziegler AG, Beyerlein A. Physical activity is associated with lower insulin and C-peptide during glucose challenge in children and adolescents with family background of diabetes. Diabet Med 2019; 36:366-375. [PMID: 30242901 DOI: 10.1111/dme.13819] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [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] [Accepted: 09/19/2018] [Indexed: 01/03/2023]
Abstract
AIMS Children and adolescents with a family history of diabetes are at increased risk of overweight, but little is known about the potentially beneficial effects of physical activity on these children. The objective of this study was to investigate the association between moderate to vigorous physical activity (MVPA) and metabolic and inflammatory risks in children and adolescents with a family background of Type 1 diabetes or gestational diabetes. METHODS Valid MVPA measurements, made with accelerometers, were available from 234 participants (median age, 10.2 years) who had a first-degree relative with either Type 1 or gestational diabetes. Anthropometric and metabolic measurements were made and cytokines measured, and were correlated with MVPA measurements, with stepwise adjustment for confounding factors, in a cross-sectional analysis. RESULTS MVPA was negatively associated with insulin and C-peptide during challenge with an oral glucose tolerance test. MVPA was also significantly positively associated with the insulin sensitivity index, whereas no consistently significant associations were found between MVPA and BMI, blood pressure or cytokine levels. DISCUSSION Our findings indicate that physical activity may have beneficial effects on insulin and C-peptide metabolism in children and adolescents with a family background of diabetes, but show no evidence of a protective association with other health-related outcomes.
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Affiliation(s)
- K Ungethüm
- Institute of Diabetes Research, Helmholtz Zentrum München, Neuherberg and Forschergruppe Diabetes der Technischen Universität München, Munich
| | - M Jolink
- Institute of Diabetes Research, Helmholtz Zentrum München, Neuherberg and Forschergruppe Diabetes der Technischen Universität München, Munich
| | - M Hippich
- Institute of Diabetes Research, Helmholtz Zentrum München, Neuherberg and Forschergruppe Diabetes der Technischen Universität München, Munich
| | - L Lachmann
- Institute of Diabetes Research, Helmholtz Zentrum München, Neuherberg and Forschergruppe Diabetes der Technischen Universität München, Munich
| | - F Haupt
- Institute of Diabetes Research, Helmholtz Zentrum München, Neuherberg and Forschergruppe Diabetes der Technischen Universität München, Munich
| | - C Winkler
- Institute of Diabetes Research, Helmholtz Zentrum München, Neuherberg and Forschergruppe Diabetes der Technischen Universität München, Munich
- Forschergruppe Diabetes e.V. am Helmholtz Zentrum München, Neuherberg
| | - S Hummel
- Institute of Diabetes Research, Helmholtz Zentrum München, Neuherberg and Forschergruppe Diabetes der Technischen Universität München, Munich
- Forschergruppe Diabetes e.V. am Helmholtz Zentrum München, Neuherberg
| | - A Pitchika
- Institute of Diabetes Research, Helmholtz Zentrum München, Neuherberg and Forschergruppe Diabetes der Technischen Universität München, Munich
| | - O Kordonouri
- Kinder- und Jugendkrankenhaus AUF DER BULT, Hannover, Germany
| | - A-G Ziegler
- Institute of Diabetes Research, Helmholtz Zentrum München, Neuherberg and Forschergruppe Diabetes der Technischen Universität München, Munich
- Forschergruppe Diabetes e.V. am Helmholtz Zentrum München, Neuherberg
| | - A Beyerlein
- Institute of Diabetes Research, Helmholtz Zentrum München, Neuherberg and Forschergruppe Diabetes der Technischen Universität München, Munich
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Böttcher I, Marquardt E, dem Berge T, Galuschka L, Müller I, Semler K, Roloff F, Christoph J, Stiller D, Aschenbach P, Haupt F, Aschemeier B, Lange K, Ziegler AG, Danne T, Kordonouri O. 1 Jahr Fr1dolin-Studie in Niedersachsen- Ergebnisse der ersten 5000 Teilnehmer. DIABETOL STOFFWECHS 2018. [DOI: 10.1055/s-0038-1641779] [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]
Affiliation(s)
- I Böttcher
- Kinder- und Jugendkrankenhaus AUF DER BULT, Diabeteszentrum für Kinder und Jugendliche, Hannover, Germany
| | - E Marquardt
- Kinder- und Jugendkrankenhaus AUF DER BULT, Diabeteszentrum für Kinder und Jugendliche, Hannover, Germany
| | - T dem Berge
- Kinder- und Jugendkrankenhaus AUF DER BULT, Diabeteszentrum für Kinder und Jugendliche, Hannover, Germany
| | - L Galuschka
- Kinder- und Jugendkrankenhaus AUF DER BULT, Diabeteszentrum für Kinder und Jugendliche, Hannover, Germany
| | - I Müller
- Medizinische Hochschule Hannover, Medizinische Psychologie, Hannover, Germany
| | - K Semler
- Kinder- und Jugendkrankenhaus AUF DER BULT, Diabeteszentrum für Kinder und Jugendliche, Hannover, Germany
| | - F Roloff
- Kinder- und Jugendkrankenhaus AUF DER BULT, Diabeteszentrum für Kinder und Jugendliche, Hannover, Germany
| | - J Christoph
- Kinder- und Jugendkrankenhaus AUF DER BULT, Diabeteszentrum für Kinder und Jugendliche, Hannover, Germany
| | - D Stiller
- Kinder- und Jugendkrankenhaus AUF DER BULT, Diabeteszentrum für Kinder und Jugendliche, Hannover, Germany
| | - P Aschenbach
- Helmholtz Zentrum München, Institut für Diabetesforschung, München, Germany
| | - F Haupt
- Helmholtz Zentrum München, Institut für Diabetesforschung, München, Germany
| | - B Aschemeier
- Kinder- und Jugendkrankenhaus AUF DER BULT, Diabeteszentrum für Kinder und Jugendliche, Hannover, Germany
| | - K Lange
- Medizinische Hochschule Hannover, Medizinische Psychologie, Hannover, Germany
| | - AG Ziegler
- Helmholtz Zentrum München, Institut für Diabetesforschung, München, Germany
| | - T Danne
- Kinder- und Jugendkrankenhaus AUF DER BULT, Diabeteszentrum für Kinder und Jugendliche, Hannover, Germany
| | - O Kordonouri
- Kinder- und Jugendkrankenhaus AUF DER BULT, Diabeteszentrum für Kinder und Jugendliche, Hannover, Germany
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13
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Lange K, Achenbach P, Assfalg R, Bassy M, Bechthold-Dalla Pozza S, Böcker D, Braig S, Dietz B, Dunstheimer D, Eber S, Ermer U, Gavazzeni A, Gerstl EM, Götz M, Haupt F, Haus G, Heinrich M, Heublein A, Huhn F, Jolink M, Kick K, Knopff A, Koch C, Koch R, Kuhnle-Krahl U, Kriesen Y, Landendörfer W, Lang M, Laub O, Leipold G, Leppik KH, Müller H, Nellen-Hellmuth N, Ockert C, Raminger C, Renner C, Schulzik L, Sindichakis M, Tretter S, Warncke K, Winkler C, Zeller S, Ziegler AG, Müller I. Screening auf positive diabetes-spezifische Antikörper bei Kindern in Bayern (Fr1da-Projekt): psychische Folgen der Diagnose „früher Typ-1-Diabetes“ für Eltern. DIABETOL STOFFWECHS 2018. [DOI: 10.1055/s-0038-1641792] [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]
Affiliation(s)
- K Lange
- Medizinische Hochschule Hannover, Medizinische Psychologie, Hannover, Germany
| | - P Achenbach
- Institut für Diabetesforschung, Helmholtz Zentrum München, München, Germany
| | - R Assfalg
- Institut für Diabetesforschung, Helmholtz Zentrum München, München, Germany
| | - M Bassy
- Medizinische Hochschule Hannover, Medizinische Psychologie, Hannover, Germany
| | | | - D Böcker
- Klinikum Nürnberg, Nürnberg, Germany
| | - S Braig
- Klinikum Bayreuth, Bayreuth, Germany
| | - B Dietz
- Berufsverband der Kinder- und Jugendärzte e.V. Bayern, München, Germany
| | | | - S Eber
- Berufsverband der Kinder- und Jugendärzte e.V. Bayern, München, Germany
| | - U Ermer
- Kliniken St. Elisabeth, Neuburg/Donau, Germany
| | - A Gavazzeni
- Kinderarztpraxis Bogenhausen, München, Germany
| | - EM Gerstl
- Klinikum Dritter Orden, Passau, Germany
| | - M Götz
- Berufsverband der Kinder- und Jugendärzte e.V. Bayern, Elisabethszell, Germany
| | - F Haupt
- Institut für Diabetesforschung, Helmholtz Zentrum München, München, Germany
| | - G Haus
- PaedNetz Bayern e.V., München, Germany
| | - M Heinrich
- Institut für Diabetesforschung, Helmholtz Zentrum München, München, Germany
| | - A Heublein
- Institut für Diabetesforschung, Helmholtz Zentrum München, München, Germany
| | - F Huhn
- Medizinische Hochschule Hannover, Medizinische Psychologie, Hannover, Germany
| | - M Jolink
- Institut für Diabetesforschung, Helmholtz Zentrum München, München, Germany
| | - K Kick
- Institut für Diabetesforschung, Helmholtz Zentrum München, München, Germany
| | - A Knopff
- Institut für Diabetesforschung, Helmholtz Zentrum München, München, Germany
| | - C Koch
- Institut für Diabetesforschung, Helmholtz Zentrum München, München, Germany
| | - R Koch
- Leopoldina Hospital, Schweinfurt, Germany
| | | | - Y Kriesen
- Institut für Diabetesforschung, Helmholtz Zentrum München, München, Germany
| | - W Landendörfer
- Berufsverband der Kinder- und Jugendärzte e.V. Bayern, Nürnberg, Germany
| | - M Lang
- Berufsverband der Kinder- und Jugendärzte e.V. Bayern, Augsburg, Germany
| | - O Laub
- Berufsverband der Kinder- und Jugendärzte e.V. Bayern, Rosenheim, Germany
| | - G Leipold
- Berufsverband der Kinder- und Jugendärzte e.V. Bayern, Regensburg, Germany
| | - KH Leppik
- Berufsverband der Kinder- und Jugendärzte e.V. Bayern, Erlangen, Germany
| | - H Müller
- Klinikum Kempten, Kempten, Germany
| | | | - C Ockert
- RoMed Klinikum, Rosenheim, Germany
| | - C Raminger
- Institut für Diabetesforschung, Helmholtz Zentrum München, München, Germany
| | - C Renner
- Praxis Kinder- und Jugendmedizin, Deggendorf, Germany
| | - L Schulzik
- Institut für Diabetesforschung, Helmholtz Zentrum München, München, Germany
| | | | | | - K Warncke
- Abteilung Pädiatrie, Klinikum rechts der Isar, München, Germany
| | - C Winkler
- Institut für Diabetesforschung, Helmholtz Zentrum München, München, Germany
| | - S Zeller
- Berufsverband der Kinder- und Jugendärzte e.V. Bayern, Kempten, Germany
| | - AG Ziegler
- Institut für Diabetesforschung, Helmholtz Zentrum München, München, Germany
| | - I Müller
- Medizinische Hochschule Hannover, Medizinische Psychologie, Hannover, Germany
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Rödig T, Müller C, Hoch M, Haupt F, Schulz X, Wiegand A, Rizk M. Moisture content of root canal dentine affects detection of microcracks using micro-computed tomography. Int Endod J 2017; 51:357-363. [DOI: 10.1111/iej.12850] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2017] [Accepted: 08/24/2017] [Indexed: 01/02/2023]
Affiliation(s)
- T. Rödig
- Department of Preventive Dentistry; Periodontology and Cariology; University Medical Center Göttingen; Göttingen Germany
| | - C. Müller
- Department of Preventive Dentistry; Periodontology and Cariology; University Medical Center Göttingen; Göttingen Germany
| | - M. Hoch
- Department of Preventive Dentistry; Periodontology and Cariology; University Medical Center Göttingen; Göttingen Germany
| | - F. Haupt
- Department of Preventive Dentistry; Periodontology and Cariology; University Medical Center Göttingen; Göttingen Germany
| | - X. Schulz
- Department of Medical Statistics; University Medical Center Göttingen; Göttingen Germany
| | - A. Wiegand
- Department of Preventive Dentistry; Periodontology and Cariology; University Medical Center Göttingen; Göttingen Germany
| | - M. Rizk
- Department of Preventive Dentistry; Periodontology and Cariology; University Medical Center Göttingen; Göttingen Germany
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15
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Kick K, Assfalg R, Bechtold-Dalla Pozza S, Böcker D, Braig S, Dunstheimer D, Engelsberger I, Ermer U, Gavazzeni A, Gerstl EM, Haupt F, Knopff A, Koch R, Kuhnle-Krahl U, Lang M, Laub O, Maison N, Müller H, Nellen-Hellmuth N, Ockert C, Renner C, Schmidt SC, Sindichakis M, Tretter S, Winkler C, Warncke K, Achenbach P, Ziegler AG. Fr1da study at half time: screening for early stage type 1 diabetes in more than 50000 children aged from 2 to 5 years. DIABETOL STOFFWECHS 2017. [DOI: 10.1055/s-0037-1601588] [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: 10/19/2022]
Affiliation(s)
- K Kick
- Institute of Diabetes Research, Helmholtz-Zentrum München and Forschergruppe Diabetes, Klinikum rechts der Isar, Technische Universität München, München, Germany
| | - R Assfalg
- Institute of Diabetes Research, Helmholtz-Zentrum München and Forschergruppe Diabetes, Klinikum rechts der Isar, Technische Universität München, München, Germany
| | | | - D Böcker
- Klinikum Nürnberg, Nürnberg, Germany
| | - S Braig
- Klinikum Bayreuth, Bayreuth, Germany
| | | | - I Engelsberger
- Department of Pediatrics, Klinikum rechts der Isar, Technische Universität München, München, Germany
| | - U Ermer
- Kliniken St. Elisabeth, Neuburg/Donau, Germany
| | - A Gavazzeni
- Kinderarzt Praxis Bogenhausen, München, Germany
| | - EM Gerstl
- Klinikum Dritter Orden, Passau, Germany
| | - F Haupt
- Institute of Diabetes Research, Helmholtz-Zentrum München and Forschergruppe Diabetes, Klinikum rechts der Isar, Technische Universität München, München, Germany
| | - A Knopff
- Institute of Diabetes Research, Helmholtz-Zentrum München and Forschergruppe Diabetes, Klinikum rechts der Isar, Technische Universität München, München, Germany
| | - R Koch
- Leopoldina Hospital, Schweinfurt, Germany
| | | | - M Lang
- Berufsverband der Kinder- und Jugendärzte e.V., Landesverband Bayern, Augsburg, Germany
| | - O Laub
- PaedNetz Bayern e.V., Rosenheim, Germany
| | - N Maison
- Institute of Diabetes Research, Helmholtz-Zentrum München and Forschergruppe Diabetes, Klinikum rechts der Isar, Technische Universität München, München, Germany
| | - H Müller
- Klinikum Kempten, Kempten, Germany
| | | | - C Ockert
- RoMed Klinikum Rosenheim, Rosenheim, Germany
| | - C Renner
- Praxis für Kinder- und Jugendmedizin, Deggendorf, Germany
| | | | | | | | - C Winkler
- Institute of Diabetes Research, Helmholtz-Zentrum München and Forschergruppe Diabetes, Klinikum rechts der Isar, Technische Universität München, München, Germany
| | - K Warncke
- Institute of Diabetes Research, Helmholtz-Zentrum München and Forschergruppe Diabetes, Klinikum rechts der Isar, Technische Universität München, München, Germany
| | - P Achenbach
- Institute of Diabetes Research, Helmholtz-Zentrum München and Forschergruppe Diabetes, Klinikum rechts der Isar, Technische Universität München, München, Germany
| | - AG Ziegler
- Institute of Diabetes Research, Helmholtz-Zentrum München and Forschergruppe Diabetes, Klinikum rechts der Isar, Technische Universität München, München, Germany
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16
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Jolink M, Huang D, Haupt F, Winkler C, Smith M, Ziegler AG, Beyerlein A. Untersuchung der körperlichen Aktivität bei Kindern mit erhöhtem genetischen Risiko für Typ 1 Diabetes. DIABETOL STOFFWECHS 2017. [DOI: 10.1055/s-0037-1601590] [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: 10/19/2022]
Affiliation(s)
- M Jolink
- Helmholtz Zentrum München, Institut für Diabetesforschung, München, Germany
| | - D Huang
- Helmholtz Zentrum München, Institut für Diabetesforschung, München, Germany
| | - F Haupt
- Helmholtz Zentrum München, Institut für Diabetesforschung, München, Germany
| | - C Winkler
- Helmholtz Zentrum München, Institut für Diabetesforschung, München, Germany
| | - M Smith
- Helmholtz Zentrum München, Institut für Epidemiologie 1, München, Germany
| | - AG Ziegler
- Helmholtz Zentrum München, Institut für Diabetesforschung, München, Germany
| | - A Beyerlein
- Helmholtz Zentrum München, Institut für Diabetesforschung, München, Germany
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17
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Winkler C, Laimighofer M, Haupt F, D'Orlando O, Jergens S, Scholz M, Krumsiek J, Achenbach P, Ziegler AG. Die Messung von Serumzytokinkonzentrationen verbessert die Stratifizierung der Progressionsrate zum klinisch manifesten Typ 1 Diabetes bei Inselautoantikörper-positiven Kindern. DIABETOL STOFFWECHS 2016. [DOI: 10.1055/s-0036-1584095] [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]
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18
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Heinrich M, Haupt F, Winkler C, Jergens S, Endesfelder D, Becker P, Antl N, Warncke K, Achenbach P, Ziegler AG. Heterogeneity of young patients with new-onset diabetes mellitus. DIABETOL STOFFWECHS 2016. [DOI: 10.1055/s-0036-1584097] [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]
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Achenbach P, Winkler C, Haupt F, Beyerlein A, Ziegler AG. [Predisposition, early stages and phenotypes of type 1 diabetes]. Dtsch Med Wochenschr 2014; 139:1100-4. [PMID: 24823976 DOI: 10.1055/s-0034-1370059] [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: 10/25/2022]
Affiliation(s)
- P Achenbach
- Institut für Diabetesforschung, Helmholtz Zentrum München, Forschergruppe Diabetes, Klinikum rechts der Isar, Technische Universität München
| | - C Winkler
- Institut für Diabetesforschung, Helmholtz Zentrum München, Forschergruppe Diabetes, Klinikum rechts der Isar, Technische Universität München
| | - F Haupt
- Institut für Diabetesforschung, Helmholtz Zentrum München, Forschergruppe Diabetes, Klinikum rechts der Isar, Technische Universität München
| | - A Beyerlein
- Institut für Diabetesforschung, Helmholtz Zentrum München, Forschergruppe Diabetes, Klinikum rechts der Isar, Technische Universität München
| | - A-G Ziegler
- Institut für Diabetesforschung, Helmholtz Zentrum München, Forschergruppe Diabetes, Klinikum rechts der Isar, Technische Universität München
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20
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D'Orlando O, Puff R, Henniger A, Krause S, Haupt F, Kühn D, Winkler C, Bonifacio E, Ziegler AG. Immune status is associated with the mode of delivery in infants at increased risk for Type 1 Diabetes. DIABETOL STOFFWECHS 2014. [DOI: 10.1055/s-0034-1374887] [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: 10/25/2022]
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21
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Weber K, Raab J, Haupt F, Aschermeier B, Wosch A, Ried C, Kordonouri O, Ziegler AG, Winkler C. Nährstoffzufuhr und Lebensmittelverzehr von 8 - 12-jährigen Teilnehmern der TEENDIAB-Studie: Haben Kinder mit erhöhtem Risiko für Typ 1 Diabetes ein verändertes Ernährungsverhalten? DIABETOL STOFFWECHS 2013. [DOI: 10.1055/s-0033-1341809] [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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22
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Raab J, Haupt F, Kordonouri O, Scholz M, Wosch A, Ried C, Aschemeier B, Danne T, Ziegler AG, Winkler C. Kontinuierlicher Anstieg der Insulinresistenz vor und nach dem Beginn der Pubertät - Ergebnisse bei Kindern mit einem erhöhten Typ 1 Diabetes Risiko. DIABETOL STOFFWECHS 2013. [DOI: 10.1055/s-0033-1341852] [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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Böhling J, Dang K, Winkler C, Schneider S, Haupt F, Ziegler AG, Lange K. Psychische Belastungen von Teilnehmern an der TEENDIAB-Studie und ihrer Eltern im Verlauf des ersten Studienjahres: Gesundheitsbezogene Lebensqualität, diabetesspezifische und allgemeine Ängste. DIABETOL STOFFWECHS 2013. [DOI: 10.1055/s-0033-1341893] [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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Bratke K, Haupt F, Kuepper M, Bade B, Faehndrich S, Luttmann W, Virchow JC. Decrease of cytotoxic T cells in allergic asthma correlates with total serum immunglobulin E. Allergy 2006; 61:1351-7. [PMID: 17002713 DOI: 10.1111/j.1398-9995.2006.01192.x] [Citation(s) in RCA: 9] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
BACKGROUND Allergic asthma has been linked to an increase in T-helper type 2-like cytokines and T cells, but there is growing evidence for a role of lymphocyte-mediated cytotoxic mechanisms in the pathogenesis of asthma. Therefore, we investigated the cytotoxic potential of different lymphocyte subpopulations in patients with allergic asthma. METHODS Granzyme A, B, K, and perforin expression in peripheral blood lymphocytes was analyzed using flow cytometry. Soluble granzymes were measured in serum using specific enzyme-linked immunosorbent assays. RESULTS Asthmatics had significantly decreased percentages of granzyme and perforin-positive CD4 T cells compared with non-atopic controls. In patients with asthma, the granzyme B and perforin-positive subset of CD8(+) T cells and natural killer T cells, which represent more differentiated cell populations, were significantly reduced, while this was not observed in the less differentiated granzyme K(+) subsets. In addition, the serum concentrations of granzyme B were significantly reduced in patients with asthma, while granzyme K concentrations were not different. Interestingly, there was a negative correlation between granzyme A, B and perforin expression in T cell subsets as well as serum granzyme B concentrations and total serum immunglobulin E. In CD3-negative natural killer cells, no differences in granzyme or perforin expression between patients with asthma and controls were detected. CONCLUSION In allergic asthma, cytotoxic T lymphocyte subsets of a more differentiated phenotype are significantly decreased and this is correlated to serum immunglobulin E levels.
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Affiliation(s)
- K Bratke
- Department of Pneumology, University of Rostock, Rostock, Germany
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