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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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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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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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6
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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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8
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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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9
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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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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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11
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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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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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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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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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