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Johansen SU, Hansen T, Nordborg A, Meyer R, Goll R, Florholmen J, Jensen E. Plasma tryptophan pathway metabolites quantified by liquid chromatography-tandem mass spectrometry as biomarkers in neuroendocrine tumor patients. J Neuroendocrinol 2024; 36:e13372. [PMID: 38361341 DOI: 10.1111/jne.13372] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/25/2023] [Revised: 11/21/2023] [Accepted: 01/11/2024] [Indexed: 02/17/2024]
Abstract
A good and accessible biomarker is of great clinical value in neuroendocrine tumor (NET) patients, especially considering its frequently indolent nature and long-term follow-up. Plasma chromogranin A (CgA) and 5-hydroxyindoleacetic acid (5-HIAA) are currently used as biomarkers in NET, but their sensitivity and specificity are restricted. 5-HIAA is the main metabolite of serotonin, an important neurotransmitter of the tryptophan pathway. The aim of this study is to estabish a sensitive and accurate method for the quantification of tryptophan pathway metabolites in plasma. We further aimed to evaluate its utility as a clinical tool in NET disease. We obtained plasma samples from NET patients and healthy controls recruited from the University Hospital of North Norway, Tromsø. Samples were analyzed by liquid chromatography-tandem mass spectrometry (LC-MS/MS), and eight metabolites of the tryptophan pathway were quantified. We included 130 NET patients (72/130 small intestinal [SI] NET, 35/130 pancreatic NET, 23/130 other origin) and 20 healthy controls. In the SI-NET group, 26/72 patients presented with symptoms of carcinoid syndrome (CS). We found that combining tryptophan metabolites into a serotonin/kynurenine pathway ratio improved diagnostic sensitivity (92.3%) and specificity (100%) in detecting CS patients from healthy controls compared with plasma 5-HIAA alone (sensitivity 84.6%/specificity 100%). Further, a clinical marker based on the combination of plasma serotonin, 5-HIAA, and 5OH-tryptophan, increased diagnostic capacity identifying NET patients with metastasized disease from healthy controls compared with singular plasma 5-HIAA, serotonin, or CgA. In addition, this marker was positive in 61% of curatively operated SI-NET patients compared with only 10% of healthy controls (p < .001). Our results indicate that simultaneous quantification of several tryptophan metabolites in plasma, using LC-MS/MS, may represent a clinically useful diagnostic tool in NET disease.
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Affiliation(s)
- S U Johansen
- Department of Clinical Medicine, UiT the Arctic University of Norway, Tromsø, Norway
- Medical Gastroenterology, Division of Internal Medicine, University Hospital of North Norway, Tromsø, Norway
| | - T Hansen
- Department of Biotechnology and Nanomedicine, SINTEF Industry, Trondheim, Norway
- Department of Pharmacy, UiT the Arctic University of Norway, Tromsø, Norway
| | - A Nordborg
- Department of Biotechnology and Nanomedicine, SINTEF Industry, Trondheim, Norway
| | - R Meyer
- Medical Gastroenterology, Division of Internal Medicine, University Hospital of North Norway, Tromsø, Norway
| | - R Goll
- Department of Clinical Medicine, UiT the Arctic University of Norway, Tromsø, Norway
- Medical Gastroenterology, Division of Internal Medicine, University Hospital of North Norway, Tromsø, Norway
| | - J Florholmen
- Department of Clinical Medicine, UiT the Arctic University of Norway, Tromsø, Norway
- Medical Gastroenterology, Division of Internal Medicine, University Hospital of North Norway, Tromsø, Norway
| | - E Jensen
- Department of Pharmacy, UiT the Arctic University of Norway, Tromsø, Norway
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Träger J, Dräger S, Mihai S, Cipa F, Busse Grawitz A, Epting T, Meyer R, Rappold E, Held J. Detailed β-(1→3)-D-glucan and mannan antigen kinetics in patients with candidemia. J Clin Microbiol 2023; 61:e0059823. [PMID: 37823667 PMCID: PMC10662340 DOI: 10.1128/jcm.00598-23] [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: 05/09/2023] [Accepted: 08/17/2023] [Indexed: 10/13/2023] Open
Abstract
Fungal antigens such as β-(1→3)-D-glucan (BDG) or mannan (Mn) are useful for detection of candidemia. However, detailed data on serum levels before diagnosis and during treatment are scarce. We conducted a prospective study at two German tertiary care centers for 36 months. Sera from adult patients with candidemia were tested for BDG (Fungitell assay) and Mn (Platelia Candida Ag-Plus assay). For each patient, the clinical course and biomarker kinetics were closely followed and compared. 1,243 sera from 131 candidemia episodes and 15 relapses were tested. In 35% of episodes, empirical therapy included an antifungal drug. Before blood culture sampling, BDG and Mn levels were elevated in 62.4% and 30.8% of patients, respectively. Sensitivity at blood culture sampling was 78.6% (BDG) and 35.1% (Mn). BDG levels of non-survivors were significantly higher than those of survivors. During follow-up, a therapeutic response was associated with decreasing BDG and Mn levels in 84.3% or 70.5% of episodes, respectively. A median increase of 513 pg BDG/mL and 390 pg Mn/mL indicated a relapse of candidemia with a sensitivity of 80% or 46.7%, respectively. In 72.9% and 46.8% of patients, increasing BDG or Mn levels were associated with a fatal outcome. Prior to discharge, BDG and Mn levels had dropped or normalized in 65.7% or 82.1% of patients, respectively. Summarising, in patients with candidemia, biomarker positivity usually precedes culture positivity. Relapses are mostly accompanied by secondary biomarker increases. Rising concentrations of BDG and Mn predict lethality, whereas decreasing levels suggest a favorable outcome in the majority of patients.
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Affiliation(s)
- Johannes Träger
- Mikrobiologisches Institut - Klinische Mikrobiologie, Immunologie und Hygiene, Universitätsklinikum Erlangen und Friedrich-Alexander-Universität (FAU) Erlangen-Nürnberg, Erlangen, Germany
| | - Sarah Dräger
- Klinik für Innere Medizin, Universitätsspital Basel, Basel, Switzerland
| | - Sidonia Mihai
- Zentrallabor, Universitätsklinikum Erlangen und Friedrich-Alexander-Universität (FAU) Erlangen-Nürnberg, Erlangen, Germany
| | - Franziska Cipa
- Zentrallabor, Universitätsklinikum Erlangen und Friedrich-Alexander-Universität (FAU) Erlangen-Nürnberg, Erlangen, Germany
| | - Andrea Busse Grawitz
- Institut für Klinische Chemie und Laboratoriumsmedizin, Universitätsklinikum Freiburg, Freiburg, Germany
| | - Thomas Epting
- Institut für Klinische Chemie und Laboratoriumsmedizin, Universitätsklinikum Freiburg, Freiburg, Germany
| | - Renate Meyer
- Institut für Medizinische Mikrobiologie und Hygiene, Universitätsklinikum Freiburg, Freiburg, Germany
| | - Elfriede Rappold
- Institut für Medizinische Mikrobiologie und Hygiene, Universitätsklinikum Freiburg, Freiburg, Germany
| | - Jürgen Held
- Mikrobiologisches Institut - Klinische Mikrobiologie, Immunologie und Hygiene, Universitätsklinikum Erlangen und Friedrich-Alexander-Universität (FAU) Erlangen-Nürnberg, Erlangen, Germany
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Archer E, Govender L, Meyer R, Nadkar AA, Smit L. Praxis-Informed Pointers: A Student Guide for Optimizing Clinical Learning in a Resource-Constrained Setting. Teach Learn Med 2023:1-7. [PMID: 37553839 DOI: 10.1080/10401334.2023.2237480] [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: 09/12/2022] [Revised: 05/20/2023] [Accepted: 06/15/2023] [Indexed: 08/10/2023]
Abstract
Issue: Health professions education (HPE) is intimately linked with teaching and learning in the clinical environment. While the value of authentic clinical experiences is acknowledged, whether learning actually occurs is to a large extent dependent on students' behaviors and attitudes. The kinds of student behaviors and attitudes that are necessary to optimize learning in the clinical environment thus becomes relevant. Evidence: Tips and recommendations to maximize clinical learning in a variety of settings have been well documented. There is, however, a dearth of literature which takes a narrative-based praxis approach focused on resource-constrained environments. We developed this praxis-orientated article as a means to translate the available literature and theory into a simple, practical guide, focused on optimizing clinical learning from a student perspective, remaining cognizant of the particular challenges present in a resource-constrained setting. Implications: Based on the resource-constrained environments our students are exposed to, we outline the following six key aspects: student-driven learning, integration into the community of practice, student engagement, empathy, interprofessional learning opportunities, and feedback for learning. These aspects provide useful pointers for students in general. Furthermore, exploration into what strategies students may utilize in resource-constrained clinical contexts is addressed.
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Affiliation(s)
- E Archer
- Centre for Health Professions Education, Faculty of Medicine and Health Sciences, Stellenbosch University, Stellenbosch, South Africa
| | - L Govender
- Division of Anatomical Pathology, Faculty of Health Sciences, University of Cape Town, Cape Town, South Africa
| | - R Meyer
- Centre for Health Professions Education, Faculty of Medicine and Health Sciences, Stellenbosch University, Stellenbosch, South Africa
| | - A A Nadkar
- Tygerberg Hospital, Western Cape, South Africa
- MBChB Unit, Faculty of Medicine and Health Sciences, Stellenbosch University, Stellenbosch, South Africa
| | - L Smit
- Tygerberg Hospital, Western Cape, South Africa
- Department of Paediatrics and Child Health, Faculty of Medicine and Health Sciences, Stellenbosch University, Stellenbosch, South Africa
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Beckmann A, Meyer R, Lewandowski J, Markewitz A, Blaßfeld D, Böning A. German Heart Surgery Report 2022: The Annual Updated Registry of the German Society for Thoracic and Cardiovascular Surgery. Thorac Cardiovasc Surg 2023; 71:340-355. [PMID: 37327912 DOI: 10.1055/s-0043-1769597] [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: 06/18/2023]
Abstract
Based on a longtime voluntary registry, founded by the German Society for Thoracic and Cardiovascular Surgery (GSTCVS/DGTHG) in 1980, well-defined data of all cardiac, thoracic, and vascular surgery procedures performed in 78 German heart surgery departments during the year 2022 are analyzed. Under the decreasing interference of the worldwide coronavirus disease 2019 pandemic, a total of 162,167 procedures were submitted to the registry. A total of 93,913 of these operations are summarized as heart surgery procedures in a classical sense. The unadjusted in-hospital survival rate for the 27,994 isolated coronary artery bypass grafting procedures (relationship on-/off-pump 3.2:1) was 97.5%. For the 38,492 isolated heart valve procedures (20,272 transcatheter interventions included) it was 96.9%, and for the registered pacemaker/implantable cardioverter-defibrillator procedures (19,531) 99.1%, respectively. Concerning short- and long-term circulatory support, a total of 2,737 extracorporeal life support/extracorporeal membrane oxygenation implantations, respectively 672 assist device implantations (L-/ R-/ BVAD, TAH) were registered. In 2022, 356 isolated heart transplantations, 228 isolated lung transplantations, and 5 combined heart-lung transplantations were performed. This annually updated registry of the GSTCVS/DGTHG represents voluntary public reporting by accumulating actual information for nearly all heart surgical procedures in Germany, constitutes advancements in heart medicine, and represents a basis for quality management for all participating institutions. In addition, the registry demonstrates that the provision of cardiac surgery in Germany is up to date, appropriate, and nationwide patient treatment is always available.
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Affiliation(s)
- Andreas Beckmann
- German Society for Thoracic and Cardiovascular Surgery, Langenbeck-Virchow-Haus, Berlin, Germany
| | - Renate Meyer
- BQS Institute for Quality and Patient Safety, Hamburg, Germany
| | - Jana Lewandowski
- German Society for Thoracic and Cardiovascular Surgery, Langenbeck-Virchow-Haus, Berlin, Germany
| | - Andreas Markewitz
- German Society for Thoracic and Cardiovascular Surgery, Langenbeck-Virchow-Haus, Berlin, Germany
| | - Daniela Blaßfeld
- German Society for Thoracic and Cardiovascular Surgery, Langenbeck-Virchow-Haus, Berlin, Germany
| | - Andreas Böning
- Department for Adult, Pediatric Cardiac and Vascular Surgery, University Clinic Gießen, Gießen, Germany
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Weissbach T, Hausman-Kedem M, Yanay Z, Meyer R, Bar-Yosef O, Leibovitch L, Berkenstadt M, Chorin O, Shani H, Massarwa A, Achiron R, Weisz B, Sharon R, Mazaki-Tovi S, Kassif E. Congenital hypotonia: systematic approach for prenatal detection. Ultrasound Obstet Gynecol 2023; 62:94-105. [PMID: 36779229 DOI: 10.1002/uog.26178] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/26/2022] [Revised: 01/07/2023] [Accepted: 01/19/2023] [Indexed: 06/18/2023]
Abstract
OBJECTIVES Congenital hypotonic conditions are rare and heterogeneous, and some are severely debilitating or lethal. Contrary to its prominent postnatal manifestation, the prenatal presentation of hypotonia is frequently subtle, inhibiting prenatal detection. We aimed to characterize the prenatal sonographic manifestation of congenital hypotonia throughout pregnancy, evaluate the yield of diagnostic tests and propose diagnostic models to increase its prenatal detection. METHODS This was a retrospective observational study of singleton pregnancies with congenital hypotonia, diagnosed either prenatally or immediately after birth, at a single tertiary center between the years 2012 and 2020. Prenatally, hypotonia was diagnosed if a fetus showed sonographic or clinical signs suggestive of hypotonia and had a confirmed underlying genetic condition, or in the absence of a known genetic abnormality if the fetus exhibited multiple prominent signs suggestive of hypotonia. Postnatally, it was diagnosed in neonates displaying reduced muscle tone leading to reduced spontaneous movement, reduced swallowing or feeding difficulty. We reviewed the medical records of pregnant patients carrying fetuses subsequently diagnosed with congenital hypotonia and assessed the yield of ultrasound scans, fetal magnetic resonance imaging, computed tomography and genetic tests. The detection rate of sonographic signs suggesting fetal hypotonia was calculated. The prevalence of non-specific signs, including polyhydramnios, persistent breech presentation, intrauterine growth restriction and maternal perception of reduced fetal movement, were compared between the study group and the local liveborn singleton population. Potential detection rates of different theoretical semiotic diagnostic models, differing in the threshold for referral for a targeted scan, were assessed based on the cohort's data. RESULTS The study group comprised 26 cases of congenital hypotonia, of which 10 (38.5%) were diagnosed prenatally, and the controls included 95 105 singleton live births, giving a prevalence of congenital hypotonia of 1:3658. Nuchal translucency thickness and the early anomaly scan at 13-17 weeks were normal in all 22 and 23 cases, respectively, in which this was performed. The mid-trimester scan performed at 19-25 weeks was abnormal in four of 24 (16.7%) cases. The overall prenatal detection rate of congenital hypotonic conditions in our cohort was 38.5%. Only cases which underwent a targeted scan were detected and, among the 16 cases which underwent this scan, the prenatal detection rate was 62.5% compared with 0% in pregnancies that did not undergo this scan (P = 0.003). An abnormal genetic diagnosis was obtained in 21 (80.8%) cases using the following modalities: chromosomal microarray analysis (CMA) in two (9.5%), whole-exome sequencing (WES) in 14 (66.7%) and methylation analysis in five (23.8%). CMA was abnormal in 8% (2/25) of the cases and WES detected a causative genetic mutation in 87.5% (14/16) of the cases in which these were performed. Comparison of non-specific signs in the study group with those in the local singleton population showed that hypotonic fetuses had significantly more polyhydramnios (64.0% vs 3.0%, P < 0.0001), persistent breech presentation (58.3% vs 4.2%, P < 0.0001), intrauterine growth restriction (30.8% vs 3.0%, P < 0.0001) and maternal perception of reduced fetal movement (32.0% vs 4.7%, P < 0.0001). Prenatally, the most commonly detected signs supporting a diagnosis of hypotonia were structural anomaly (62.5%, 10/16), reduced fetal movement (46.7%, 7/15), joint contractures (46.7%, 7/15) and undescended testes ≥ 30 weeks (42.9%, 3/7 males). Proposed diagnostic strategies that involved performing a targeted scan for a single non-specific ultrasound sign or two such signs, and then carrying out a comprehensive genetic evaluation for any additional sign, offered theoretical detection rates in our cohort of 88.5% and 57.7%, respectively. CONCLUSIONS Congenital hypotonic conditions are rare and infrequently detected prenatally. Sonographic signs are visible from the late second trimester. A targeted scan increases prenatal detection significantly. Comprehensive genetic testing, especially WES, is the cornerstone of diagnosis in congenital hypotonia. Theoretical diagnostic models which may increase prenatal detection are provided. © 2023 The Authors. Ultrasound in Obstetrics & Gynecology published by John Wiley & Sons Ltd on behalf of International Society of Ultrasound in Obstetrics and Gynecology.
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Affiliation(s)
- T Weissbach
- Institute of Obstetrical and Gynecological Imaging, Department of Obstetrics and Gynecology, Sheba Medical Center, Tel Hashomer, Israel
- Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - M Hausman-Kedem
- Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel
- Pediatric Neurology Institute, Dana-Dwek Children's Hospital, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel
| | - Z Yanay
- Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel
- Schneider Children's Medical Center, Petach Tikva, Israel
| | - R Meyer
- Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel
- Department of Obstetrics and Gynecology, Sheba Medical Center, Tel Hashomer, Israel
| | - O Bar-Yosef
- Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel
- Pediatric Neurology, Safra Children's Hospital, Sheba, Tel Hashomer, Israel
| | - L Leibovitch
- Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel
- Neonatal Intensive Care Unit, Sheba Medical Center, Tel Hashomer, Israel
| | - M Berkenstadt
- Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel
- Danek Institute of Genetics, Sheba Medical Center, Tel Hashomer, Israel
| | - O Chorin
- Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel
- Danek Institute of Genetics, Sheba Medical Center, Tel Hashomer, Israel
| | - H Shani
- Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel
- Danek Institute of Genetics, Sheba Medical Center, Tel Hashomer, Israel
| | - A Massarwa
- Institute of Obstetrical and Gynecological Imaging, Department of Obstetrics and Gynecology, Sheba Medical Center, Tel Hashomer, Israel
- Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - R Achiron
- Institute of Obstetrical and Gynecological Imaging, Department of Obstetrics and Gynecology, Sheba Medical Center, Tel Hashomer, Israel
- Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - B Weisz
- Institute of Obstetrical and Gynecological Imaging, Department of Obstetrics and Gynecology, Sheba Medical Center, Tel Hashomer, Israel
- Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - R Sharon
- Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel
- Department of Neurology, Sheba Medical Center, Tel Hashomer, Israel
| | - S Mazaki-Tovi
- Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel
- Department of Obstetrics and Gynecology, Sheba Medical Center, Tel Hashomer, Israel
| | - E Kassif
- Institute of Obstetrical and Gynecological Imaging, Department of Obstetrics and Gynecology, Sheba Medical Center, Tel Hashomer, Israel
- Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel
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Niino C, Tholemeier L, Meyer R, Siedhoff M, Wright K, Truong M. Telemedicine improves visit efficiency in minimally invasive gynecologic surgery practice. Am J Obstet Gynecol 2023. [DOI: 10.1016/j.ajog.2022.12.186] [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: 03/10/2023]
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Hamilton K, Konate N, Meyer R, Jasmine G, Wright K, Siedhoff M, Scheib S, Truong M. Racial and gender representation trends among national obstetrics and gynecology society leadership. Am J Obstet Gynecol 2023. [DOI: 10.1016/j.ajog.2022.12.106] [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: 03/11/2023]
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Tang Y, Kirch C, Lee JE, Meyer R. Posterior consistency for the spectral density of
non‐Gaussian
stationary time series. Scand Stat Theory Appl 2022. [DOI: 10.1111/sjos.12627] [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: 12/16/2022]
Affiliation(s)
- Yifu Tang
- Department of Statistics The University of Auckland Auckland New Zealand
| | - Claudia Kirch
- Institute for Mathematical Stochastics, Department of Mathematics Otto‐von‐Guericke University Magdeburg Germany
| | - Jeong Eun Lee
- Department of Statistics The University of Auckland Auckland New Zealand
| | - Renate Meyer
- Department of Statistics The University of Auckland Auckland New Zealand
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Dittrich S, Arenz C, Krogmann O, Tengler A, Meyer R, Bauer U, Hofbeck M, Beckmann A, Horke A. German Registry for Cardiac Operations and Interventions in Patients with Congenital Heart Disease: Report 2021 and 9 Years' Longitudinal Observations on Fallot and Coarctation Patients. Thorac Cardiovasc Surg 2022; 70:e21-e33. [PMID: 36174655 PMCID: PMC9536750 DOI: 10.1055/s-0042-1757175] [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] [Indexed: 10/26/2022]
Abstract
BACKGROUND The annual report of the German Quality Assurance of Congenital Heart Disease displays a broad overview on outcome of interventional and surgical treatment with respect to patient's age and risk categorization. Particular features of the German all-comers registry are the inclusion of all interventional and surgical procedures, the possibility to record repeated treatments with distinct individual patient assignment, and to record various procedures within one case. METHODS International Pediatric and Congenital Cardiac Code terminology for diagnoses and procedures as well as classified adverse events, also recording of demographic data, key procedural performance indicators, and key quality indicators (mortality, adverse event rates). Surgical and interventional adverse events were classified according to the Society of Thoracic Surgeons and to the Congenital Heart Disease Adjustment for Risk Method of the congenital cardiac catheterization project on outcomes. Annual analysis of all cases and additional long-term evaluation of patients after repair of Fallot and primary treatment of native coarctation of the aorta were performed. RESULTS In 2020, 5,532 patients with 6,051 cases (hospital stays) with 6,986 procedures were treated in 23 German institutions. Cases dispense on 618 newborns (10.2%), 1,532 infants (25.3%), 3,077 children (50.9%), and 824 adults (13.6%). Freedom from adverse events was 94.5% in 2,795 interventional cases, 67.9% in 2,887 surgical cases, and 42.9% in 336 cases with multiple procedures (without considering the 33 hybrid interventions). In-hospital mortality was 0.5% in interventional, 1.6% in surgical, and 5.7% in cases with multiple treatments. Long-term observation of 1,632 patient after repair of Fallot depicts the impact of previous palliation in 18% of the patients on the rate of 20.8% redo cases. Differentiated analysis of 1,864 patients with native coarctation picture clear differences of patient, age, and procedure selection and outcome. The overall redo procedure rate in this patient population is high with 30.8%. CONCLUSION Improvement in quality of care requires detailed analysis of risks, performance indicators, and outcomes. The high necessity of redo procedures in patients with complex congenital heart disease underlines the imperative need of long-term observations.
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Affiliation(s)
- Sven Dittrich
- Department of Pediatric Cardiology, Friedrich-Alexander-Universitat Erlangen-Nurnberg, Erlangen, Germany
| | - Claudia Arenz
- Department of Pediatric Heart Surgery, University of Bonn, Bonn, Germany
| | - Otto Krogmann
- Clinic for Pediatric Cardiology - Congenital Heart Defects, Heart Center Duisburg, Duisburg, Germany
| | - Anja Tengler
- Department of Pediatric Cardiology and Intensive Care, Ludwig-Maximilians-Universitat Munich, Munich, Germany
| | - Renate Meyer
- BQS Institute for Quality and Patient Safety, Hamburg, Germany
| | - Ulrike Bauer
- National Register for Congenital Heart Defects, Berlin, Germany
| | - Michael Hofbeck
- Department of Pediatric Cardiology, Pulmology and Intensive Care, University Children's Hospital, Tübingen, Germany
| | - Andreas Beckmann
- German Society for Thoracic and Cardiovascular Surgery, Berlin, Germany
| | - Alexander Horke
- Division of Congenital Heart Surgery, Hannover Medical School, Hannover, Germany
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Goll R, Moe ØK, Johnsen KM, Meyer R, Friestad J, Gundersen MD, Kileng H, Johnsen K, Florholmen JR. Pharmacodynamic mechanisms behind a refractory state in inflammatory bowel disease. BMC Gastroenterol 2022; 22:464. [DOI: 10.1186/s12876-022-02559-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/31/2022] [Accepted: 10/29/2022] [Indexed: 11/18/2022] Open
Abstract
Abstract
Background and aims
Biological therapy for inflammatory bowel disease is efficient in many cases but not all. The underlying molecular mechanisms behind non-response to biological therapy in inflammatory bowel disease are poorly described. Therefore, we aimed to characterize the mucosal cytokine transcript profile in non-immunogenic, non-responder patients with adequate trough level.
Material and methods
Patients with ulcerative colitis (UC) (n = 21) and Crohn’s disease (CD) (n = 12) with non-response to biological therapy (anti-tumor necrosis factor (TNF) or vedolizumab) were included. Reference groups were A: untreated patients with UC or CD at debut of disease who had severe 1-year outcome, B: patients with UC or CD treated to endoscopic remission with biological agents, and C: healthy normal controls. Mucosal transcripts of TNF, interleukin (IL)17 and IL23 were measured by reverse transcription real-time quantitative polymerase chain reaction.
Results
Of the non-responders, 2 out of 12 CD and 1 out of 21 UC patients needed surgery during follow-up. Of the remaining non-responding patients, 8 out of 10 CD and 12 out of 20 UC patients switched biologic treatment. The remaining 2 CD and 8 UC patients continued treatment with the same biological agent with the addition of steroids, immunomodulators (AZA/MTX) and /or local steroids/5ASA. Twelve (8 UC/4 CD) out of 20 IBD patients were still non-responders after changing biological therapy to either anti-TNF (2), vedolizumab (9) or ustekinumab (1).
The transcripts of IL17, IL23 and TNF were significantly upregulated in the non-response group compared to normal controls and patients in remission. In UC, 24% of the non-responders had normal mucosal TNF transcript indicating a non-TNF mediated inflammation. No obvious differences in gene expression were observed between primary and secondary non-responders, nor between anti-TNF and vedolizumab non-responders.
Conclusions
Mucosal transcripts of IL17 and IL23 are highly associated with non-response to biological therapy, whereas some UC patients may also have a non-TNF mediated inflammatory pathway.
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Adler PS, Adly A, Armanios DE, Battilana J, Bodrožić Z, Clegg S, Davis GF, Gartenberg C, Glynn MA, Aslan Gümüsay A, Haveman HA, Leonardi P, Lounsbury M, McGahan AM, Meyer R, Phillips N, Sheppard-Jones K. Authoritarianism, Populism, and the Global Retreat of Democracy: A Curated Discussion. Journal of Management Inquiry 2022. [DOI: 10.1177/10564926221119395] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
To the surprise of many in the West, the fall of the USSR in 1991 did not lead to the adoption of liberal democratic government around the world and the much anticipated “end of history.” In fact, authoritarianism has made a comeback, and liberal democracy has been on the retreat for at least the last 15 years culminating in the unthinkable: the invasion of a democratic European country by an authoritarian regime. But why does authoritarianism continue to spread, not only as an alternative to liberal democracy, but also within many liberal democracies where authoritarian leaders continue to gain strength and popularity? In this curated piece, contributors discuss some of the potential contributions of management scholarship to understanding authoritarianism, as well as highlight a number of directions for management research in this area.
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Affiliation(s)
- Paul S. Adler
- University of Southern California, Los Angeles, CA, USA
| | - Amr Adly
- American University of Cairo, New Cairo, Egypt
| | | | | | | | - Stewart Clegg
- University of Sydney, Sydney, Australia
- University of Stavanger, Stavanger, Norway
| | | | | | | | - Ali Aslan Gümüsay
- University of Hamburg, Hamburg, Germany
- Humbolt Institution for Internet and Society, Berlin, Germany
| | | | - Paul Leonardi
- University of California, Santa Barbara, Santa Barbara, CA, USA
| | | | | | | | - Nelson Phillips
- University of California, Santa Barbara, Santa Barbara, CA, USA
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12
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Beckmann A, Meyer R, Lewandowski J, Markewitz A, Blaßfeld D, Böning A. German Heart Surgery Report 2021: The Annual Updated Registry of the German Society for Thoracic and Cardiovascular Surgery. Thorac Cardiovasc Surg 2022; 70:362-376. [PMID: 35948014 DOI: 10.1055/s-0042-1754353] [Citation(s) in RCA: 28] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
Abstract
Based on a longtime voluntary registry, founded by the German Society for Thoracic and Cardiovascular Surgery (GSTCVS) in 1980, well-defined data of all cardiac, thoracic and vascular surgery procedures performed in 78 German heart surgery departments during the year 2021 are analyzed. Under more than extraordinary conditions of the further ongoing worldwide coronavirus disease 2019 (COVID-19) pandemic, a total of 161,261 procedures were submitted to the registry. In total, 92,838 of these operations are summarized as heart surgery procedures in a classical sense. The unadjusted in-hospital survival rate for the 27,947 isolated coronary artery bypass grafting procedures (relationship on-/off-pump 3.2:1) was 97.3%. For the 36,714 isolated heart valve procedures (19,242 transcatheter interventions included) it was 96.7 and 99.0% for the registered pacemaker and International Classification of Diseases (ICD) procedures (19,490), respectively. Concerning short- and long-term circulatory support, a total of 3,404 ECLS/ECMO implantations and 750 assist device implantations (L-/ R-/ BVAD, TAH), respectively were registered. In 2021 329 isolated heart transplantations, 254 isolated lung transplantations, and one combined heart-lung transplantations were performed.This annually updated registry of the GSTCVS represents voluntary public reporting by accumulating actual information for nearly all heart surgical procedures in Germany, constitutes advancements in heart medicine and represents a basis for quality management for all participating institutions. In addition, the registry demonstrates that the provision of cardiac surgery in Germany is up to date, appropriate, and nationwide patient treatment is guaranteed all the time.
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Affiliation(s)
- Andreas Beckmann
- German Society for Thoracic and Cardiovascular Surgery, Langenbeck-Virchow-Haus, Berlin, Germany
| | - Renate Meyer
- BQS Institute for Quality and Patient Safety, Hamburg, Germany
| | - Jana Lewandowski
- German Society for Thoracic and Cardiovascular Surgery, Langenbeck-Virchow-Haus, Berlin, Germany
| | - Andreas Markewitz
- German Society for Thoracic and Cardiovascular Surgery, Langenbeck-Virchow-Haus, Berlin, Germany
| | - Daniela Blaßfeld
- German Society for Thoracic and Cardiovascular Surgery, Langenbeck-Virchow-Haus, Berlin, Germany
| | - Andreas Böning
- Department for Adult, Pediatric Cardiac and Vascular Surgery, University Clinic Gießen, Gießen, Germany
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13
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Cawood AL, Meyer R, Grimshaw KE, Sorensen K, Acosta-Mena D, Stratton RJ. The health economic impact of cow's milk allergy in childhood: A retrospective cohort study. Clin Transl Allergy 2022; 12:e12187. [PMID: 36036235 PMCID: PMC9412243 DOI: 10.1002/clt2.12187] [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] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2022] [Revised: 06/16/2022] [Accepted: 07/18/2022] [Indexed: 11/23/2022] Open
Abstract
Background Cow's milk allergy (CMA) is one of the most common food allergies among children. Whilst avoidance of cow's milk protein is the cornerstone of management, further treatment of symptoms including those affecting the gastrointestinal, skin and respiratory systems plus other allergic comorbidities, maybe required. This study aimed to quantify the wider economic impact of CMA and its management in the United Kingdom (UK). Methods We conducted a retrospective matched cohort study on children with CMA (diagnosis read code and/or hypoallergenic formula prescription for ≥3 months) examining healthcare data (medication prescriptions and healthcare professional contacts) from case records within The Health Improvement Network (A Cegedim Proprietary Database) in the UK. A comparative cost analysis was calculated based on healthcare tariff and unit costs in the UK. Results 6998 children (54% male; mean observation period 4.2 years) were included (n = 3499 with CMA, mean age at diagnosis 4.04 months; n = 3499 matched controls without CMA). Compared to those without CMA, medications were prescribed to significantly more children with CMA (p < 0.001) at a higher rate (p < 0.001). Children with CMA also required significantly more healthcare contacts (p < 0.001) at higher rate (p < 0.001) compared to those without CMA. CMA was associated with additional potential healthcare costs of £1381.53 per person per year. Conclusion The findings of this large cohort study suggest that CMA and its associated co‐morbidities presents a significant additional healthcare burden with economic impact due to higher prescribing of additional medications. Further research into management approaches that may impact these clinical and economic outcomes of CMA is warranted.
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Affiliation(s)
- Abbie L Cawood
- Institute of Human Nutrition, Faculty of Medicine, Southampton General Hospital, Southampton, UK.,Medical Affairs, Nutricia Ltd, White Horse Business Park, Trowbridge, UK
| | - R Meyer
- Department of Paediatrics, St Mary's Hospital, London, UK
| | - Kate E Grimshaw
- Institute of Human Nutrition, Faculty of Medicine, Southampton General Hospital, Southampton, UK.,Dietetic Department, Salford Care Organisation, Salford Royal NHS Foundation Trust, Salford, UK
| | - Katy Sorensen
- Medical Affairs, Nutricia Ltd, White Horse Business Park, Trowbridge, UK
| | | | - Rebecca J Stratton
- Institute of Human Nutrition, Faculty of Medicine, Southampton General Hospital, Southampton, UK.,Medical Affairs, Nutricia Ltd, White Horse Business Park, Trowbridge, UK
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14
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Mohr-Sasson A, Dadon T, Brandt A, Meyer R, Mashiach R, Zajicek M. A Comparative Analysis of Diagnosis and Measurement of Uterine ‘Niche’ Performed By Non-Specialist and Specialist Sonographers. J Minim Invasive Gynecol 2021. [DOI: 10.1016/j.jmig.2021.09.664] [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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15
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Meyer R, Meller N, Mohr-Sasson A, Toussia-Cohen S, Cohen SB, Bart Y, Mashiach R, Levin G. Preoperative Clinical Features of Isolated Fallopian tube Torsion: Evidence from a Large Series. J Minim Invasive Gynecol 2021. [DOI: 10.1016/j.jmig.2021.09.476] [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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16
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Beckmann A, Meyer R, Lewandowski J, Markewitz A, Gummert J. German Heart Surgery Report 2020: The Annual Updated Registry of the German Society for Thoracic and Cardiovascular Surgery. Thorac Cardiovasc Surg 2021; 69:294-307. [PMID: 34176107 DOI: 10.1055/s-0041-1730374] [Citation(s) in RCA: 57] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Based on a longtime voluntary registry, founded by the German Society for Thoracic and Cardiovascular Surgery (GSTCVS) in 1980, well-defined data of all cardiac, thoracic and vascular surgery procedures performed in 78 German heart surgery departments during the year 2020 are analyzed. Under the more than extraordinary conditions of the ongoing worldwide coronavirus disease 2019 pandemic, a total of 161,817 procedures were submitted to the registry. A total of 92,809 of these operations are summarized as heart surgery procedures in a classical sense. The unadjusted in-hospital survival rate for the 29,444 isolated coronary artery bypass grafting procedures (relationship on-/off-pump 3.6:1) was 97.2%. For the 35,469 isolated heart valve procedures, (17,471 transcatheter interventions included), the survival rate was 96.7%. Concerning short- and long-term circulatory support, a total of 2,852 extracorporeal life support/extracorporeal membrane oxygenation implantations, respectively, 843 assist device implantations (left/right/biventricular assist device, total artificial device), were registered. In 2020, the number of isolated heart transplantations increased to 340, a rise of 2.1% compared with the previous year. The isolated lung transplantations amounted to 291, a decrease of 6.4%.This annually updated registry of the GSTCVS represents voluntary public reporting by accumulating actual information for nearly all heart surgical procedures in Germany, constitutes advancements in heart medicine, and represents a basis for quality management for all participating institutions. In addition, the registry demonstrates that the provision of cardiac surgery in Germany is up to date, appropriate, and nationwide patient treatment is guaranteed all the time.
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Affiliation(s)
- Andreas Beckmann
- German Society for Thoracic and Cardiovascular Surgery, Langenbeck-Virchow-Haus, Berlin, Germany
| | - Renate Meyer
- BQS Institute for Quality and Patient Safety, Hamburg, Germany
| | - Jana Lewandowski
- German Society for Thoracic and Cardiovascular Surgery, Langenbeck-Virchow-Haus, Berlin, Germany
| | - Andreas Markewitz
- German Society for Thoracic and Cardiovascular Surgery, Langenbeck-Virchow-Haus, Berlin, Germany
| | - Jan Gummert
- Clinic for Thoracic and Cardiovascular Surgery, Heart and Diabetes Center NRW, Bad Oeynhausen, Germany
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17
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Bart Y, Mohr-Sasson A, Yousefi S, Goldenberg M, Meyer R, Toussia-Cohen S, Eyal Y, Mazaki-Tovi S, Mashiach R. Adnexal torsion recurrence-is the adnexal twist degree a risk factor? A retrospective cohort study. BJOG 2021; 128:1511-1516. [PMID: 33978295 DOI: 10.1111/1471-0528.16738] [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] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/16/2021] [Indexed: 11/29/2022]
Abstract
OBJECTIVE To evaluate whether the adnexal twist degree is related to torsion recurrence and whether there is a dose-dependent correlation. DESIGN A retrospective cohort study. SETTING Single tertiary medical centre. POPULATION The study includes non-pregnant patients operated, for the first time, for adnexal torsion, between 2011 and 2018. METHODS Information regarding the degree of adnexal twist was collected from surgical reports. Recurrence was identified using a computerised database and ascertained via telephone with a response rate of 87.2% (253/290). MAIN OUTCOME MEASURES Adnexal torsion recurrence rate. RESULTS A total of 182 women who had undergone laparoscopic detorsion met the inclusion criteria. Twenty-two had torsion recurrence (12.1%). Adnexal twist degree in the primary event was associated with a higher recurrence risk: 4.3% of women with twist degree ≤360 (n = 3/70), 14.5% of women with twist degree of 361-720 (n = 9/62) and 20% of women with twist degree >720 (n = 10/50) (P = 0.03). The median twist degree was 540 (interquartile range [IQR] 360-855) and 720 (IQR 675-1080) degrees in the control and study groups, respectively (P = 0.005). Additional possibly associated factors for recurrence were evaluated. Age emerged as a possible risk factor, with a median age of 19 years in the recurrence group (IQR 14-27 years) versus 28.5 (IQR 19-36 years) in the non-recurrence group (P < 0.01). Logistic regression analysis revealed that together with age, adnexal twist degree remained significantly associated with torsion recurrence (odds ratio [OR] 1.98, 95% CI 1.09-3.61; P = 0.02). CONCLUSION Adnexal twist degree was found to be positively associated with the risk of torsion recurrence. TWEETABLE ABSTRACT Adnexal twist degree was found to be positively associated with the risk of torsion recurrence.
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Affiliation(s)
- Y Bart
- Department of Obstetrics and Gynecology, Sheba Medical Center, Tel-Hashomer, Israel.,Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - A Mohr-Sasson
- Department of Obstetrics and Gynecology, Sheba Medical Center, Tel-Hashomer, Israel.,Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - S Yousefi
- Department of Obstetrics and Gynecology, Sheba Medical Center, Tel-Hashomer, Israel
| | - M Goldenberg
- Department of Obstetrics and Gynecology, Sheba Medical Center, Tel-Hashomer, Israel
| | - R Meyer
- Department of Obstetrics and Gynecology, Sheba Medical Center, Tel-Hashomer, Israel.,Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - S Toussia-Cohen
- Department of Obstetrics and Gynecology, Sheba Medical Center, Tel-Hashomer, Israel.,Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Y Eyal
- Kaplan Medical Center, Rehovot, Israel
| | - S Mazaki-Tovi
- Department of Obstetrics and Gynecology, Sheba Medical Center, Tel-Hashomer, Israel.,Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - R Mashiach
- Department of Obstetrics and Gynecology, Sheba Medical Center, Tel-Hashomer, Israel.,Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel
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18
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Beckmann A, Dittrich S, Arenz C, Krogmann ON, Horke A, Tengler A, Meyer R, Bauer UMM, Hofbeck M. German Registry for Cardiac Operations and Interventions in Patients with Congenital Heart Disease: Report 2020-Comprehensive Data from 6 Years of Experience. Thorac Cardiovasc Surg 2021; 69:e21-e31. [PMID: 33638137 PMCID: PMC7920329 DOI: 10.1055/s-0041-1722978] [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] [Indexed: 12/02/2022]
Abstract
Background
Based on a quality assurance initiative of the German Society for Thoracic and Cardiovascular Surgery (DGTHG) and the German Society for Pediatric Cardiology and Congenital Heart Defects (DGPK), a voluntary registry was founded for assessment of treatment and outcomes of patients with congenital heart disease in Germany. This evaluation by the German Registry for cardiac operations and interventions in patients with congenital heart disease reports the data and the outcome over a 6-year period in patients undergoing invasive treatment.
Methods
This real-world database collects clinical characteristics, in-hospital complications, and medium-term outcome of patients who underwent cardiac surgical and interventional procedures within the prospective, all-comers registry. Patients were followed-up for up to 90 days.
Results
In the period from 2013 to 2018, a total of 35,730 patients, 39,875 cases, respectively 46,700 procedures were included at up to 31 German institutions. The cases could be subcategorized according to the treatment intention into 21,027 (52.7%) isolated operations, 17,259 (43.3%) isolated interventions, and 1,589 (4.0%) with multiple procedures. Of these, 4,708 (11.8%) were performed in neonates, 10,047 (25.2%) in infants, 19,351 (48.5%) in children of 1 to 18 years, and 5,769 (14.5%) in adults. Also, 15,845 (33.9%) cases could be allocated to so-called index procedures which underwent a more detailed evaluation to enable meaningful comparability. The mean unadjusted in-hospital mortality of all cases in our registry ranged from 0.3% in patients with isolated interventions and 2.0% in patients with surgical procedures up to 9.1% in patients undergoing multiple procedures.
Conclusion
This annually updated registry of both scientific societies represents voluntary public reporting by accumulating actual information for surgical and interventional procedures in patients with congenital heart disease (CHD) in Germany. It describes advancements in cardiac medicine and is a basis for internal and external quality assurance for all participating institutions. In addition, the registry demonstrates that in Germany, both interventional and surgical procedures for treatment of CHD are offered with high medical quality.
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Affiliation(s)
- Andreas Beckmann
- German Society for Thoracic and Cardiovascular Surgery, Langenbeck-Virchow-Haus, Berlin, Germany
| | - S Dittrich
- Pediatric Cardiology Department, University of Erlangen, Erlangen, Germany
| | - C Arenz
- German Pediatric Heart Center, University of Bonn, Bonn, Germany
| | - O N Krogmann
- Clinic for Pediatric Cardiology-Congenital Heart Defects, Heart Center Duisburg, Duisburg, Germany
| | - A Horke
- Division of Congenital Heart Surgery, Hannover Medical School, Hannover, Germany
| | - A Tengler
- Division of Pediatric Cardiology and Pediatric Intensive Care; Ludwig Maximilian University of Munich, Munich, Germany
| | - R Meyer
- BQS Institute for Quality and Patient Safety, Hamburg, Germany
| | - U M M Bauer
- National Register for Congenital Heart Defects, Berlin, Germany
| | - M Hofbeck
- Department of Pediatric Cardiology, Pulmology and Intensive Care, University Children's Hospital, Tübingen, Germany
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Parsons CM, Judge A, Meyer R, Bruyère O, Petit-Dop F, Chapurlat R, Reginster JY, Cooper C, Inskip H. Determining individual trajectories of joint space loss: improved statistical methods for monitoring knee osteoarthritis disease progression. Osteoarthritis Cartilage 2021; 29:59-67. [PMID: 33246159 DOI: 10.1016/j.joca.2020.09.009] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/18/2020] [Revised: 07/21/2020] [Accepted: 09/02/2020] [Indexed: 02/02/2023]
Abstract
OBJECTIVES Knee osteoarthritis (KOA) progression is frequently monitored by calculating the change in knee joint space width (JSW) measurements. Such differences are small and sensitive to measurement error. We aimed to assess the utility of two alternative statistical modelling methods for monitoring KOA. MATERIAL AND METHODS We used JSW on radiographs from both the control arm of the Strontium Ranelate Efficacy in Knee Osteoarthritis trial (SEKOIA), a 3-year multicentre, double-blind, placebo-controlled phase three trial, and the Osteoarthritis Initiative (OAI), an open-access longitudinal dataset from the USA comprising participants followed over 8 years. Individual estimates of annualised change obtained from frequentist linear mixed effect (LME) and Bayesian hierarchical modelling, were compared with annualised crude change, and the association of these parameters with change in WOMAC pain was examined. RESULTS Mean annualised JSW changes were comparable for all estimates, a reduction of around 0.14 mm/y in SEKOIA and 0.08 mm/y in OAI. The standard deviation (SD) of change estimates was lower with LME and Bayesian modelling than crude change (SEKOIA SD = 0.12, 0.12 and 0.21 respectively; OAI SD = 0.08, 0.08 and 0.11 respectively). Estimates from LME and Bayesian modelling were statistically significant predictors of change in pain in SEKOIA (LME P-value = 0.04, Bayes P-value = 0.04), while crude change did not predict change in pain (P-value = 0.10). CONCLUSIONS Implementation of LME or Bayesian modelling in clinical trials and epidemiological studies, would reduce sample sizes by enabling all study participants to be included in analysis regardless of incomplete follow up, and precision of change estimates would improve. They provide increased power to detect associations with other measures.
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Affiliation(s)
- C M Parsons
- MRC Lifecourse Epidemiology Unit, University of Southampton, Southampton General Hospital, Southampton, UK.
| | - A Judge
- Musculoskeletal Research Unit, University of Bristol, Bristol, UK.
| | - R Meyer
- Department of Statistics, University of Auckland, New Zealand.
| | - O Bruyère
- Department of Public Health and Health Economics, University of Liege, 4020, Liege, Belgium.
| | - F Petit-Dop
- Innovative Therapeutic Pole of Rheumatology, Servier, Surenes, France.
| | - R Chapurlat
- INSERUM UMR 1033, Service de Rhumatolgie et Pathologie Osseuse, Hopital Edouard Herriot, Universite de Lyon, Lyon, France.
| | - J-Y Reginster
- Department of Public Health and Health Economics, University of Liege, 4020, Liege, Belgium.
| | - C Cooper
- MRC Lifecourse Epidemiology Unit, University of Southampton, Southampton General Hospital, Southampton, UK; National Institute for Health Research Musculoskeletal Biomedical Research Unit, University of Oxford, Oxford, UK; National Institute for Health Research Biomedical Research Centre, University of Southampton and University Hospital Southampton NHS Foundation Trust, UK.
| | - H Inskip
- MRC Lifecourse Epidemiology Unit, University of Southampton, Southampton General Hospital, Southampton, UK.
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Mohr-Sasson A, Dadon T, Brandt A, Shats M, Excelrod M, Meyer R, Zajicek M, Haas J, Mashiach R. Doctor, I Have Niche - What Does It Mean? J Minim Invasive Gynecol 2020. [DOI: 10.1016/j.jmig.2020.08.610] [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: 11/28/2022]
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21
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Levin G, Meller N, Komem D, Cohen A, Abu-Bandora E, Mohr-Sasson A, Cohen S, Mashiach R, Meyer R. Predictive Factors for Recurrence of Adnexal Torsion. J Minim Invasive Gynecol 2020. [DOI: 10.1016/j.jmig.2020.08.293] [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: 10/23/2022]
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22
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Watad H, Meyer R, Excelrod M, Mohr-Sasson A. Pregnancy Outcomes Following Hysteroscopic Resection of Uterine Septum: Does the Size Matter? J Minim Invasive Gynecol 2020. [DOI: 10.1016/j.jmig.2020.08.280] [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: 10/23/2022]
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23
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Reis R, Santos M, Santos A, Santos H, Santos L, Lopes B, Peralva C, Meyer R, Freire S. PERFIL LINFOCITÁRIO NA LEUCEMIA MIELOIDE AGUDA NO DIAGNÓSTICO E APÓS TERAPIA DE INDUÇÃO. Hematol Transfus Cell Ther 2020. [DOI: 10.1016/j.htct.2020.10.293] [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: 10/23/2022] Open
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24
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Bart Y, Yuosefi S, Mohr-Sasson A, Meyer R, Toussia-Cohen S, Mazaki-Tovi S. Adnexal Torsion Recurrence - Is the Degree of Adnexal Twist a Risk Factor? J Minim Invasive Gynecol 2020. [DOI: 10.1016/j.jmig.2020.08.624] [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: 10/23/2022]
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25
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Florholmen JR, Johnsen KM, Meyer R, Olsen T, Moe ØK, Tandberg P, Gundersen MD, Kvamme JM, Johnsen K, Løitegård T, Raschpichler G, Vold C, Sørbye SW, Goll R. Discovery and validation of mucosal TNF expression combined with histological score - a biomarker for personalized treatment in ulcerative colitis. BMC Gastroenterol 2020; 20:321. [PMID: 33008302 PMCID: PMC7532085 DOI: 10.1186/s12876-020-01447-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/22/2020] [Accepted: 09/09/2020] [Indexed: 12/12/2022] Open
Abstract
Background There are no accurate markers that can predict clinical outcome in ulcerative colitis at time of diagnosis. The aim of this study was to explore a comprehensive data set to identify and validate predictors of clinical outcome in the first year following diagnosis. Methods Treatment naive-patients with ulcerative colitis were included at time of initial diagnosis from 2004 to 2014, followed by a validation study from 2014 to 2018. Patients were treated according to clinical guidelines following a standard step-up regime. Patients were categorized according to the treatment level necessary to achieve clinical remission: mild, moderate and severe. The biopsies were assessed by Robarts histopathology index (RHI) and TNF gene transcripts. Results We included 66 patients in the calibration cohort and 89 patients in the validation. Mucosal TNF transcripts showed high test reliability for predicting severe outcome in UC. When combined with histological activity (RHI) scores the test improved its diagnostic reliability. Based on the cut-off values of mucosal TNF and RHI scores from the calibration cohort, the combined test had still high reliability in the validation cohort (specificity 0.99, sensitivity 0.44, PPV 0.89, NPV 0.87) and a diagnostic odds-ratio (DOR) of 54. Conclusions The combined test using TNF transcript and histological score at debut of UC can predict severe outcome and the need for anti-TNF therapy with a high level of precision. These validated data may be of great clinical utility and contribute to a personalized medical approach with the possibility of top-down treatment for selected patients.
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Affiliation(s)
- Jon R Florholmen
- Research Group of Gastroenterology and Nutrition, Department of Clinical Medicine, University of Tromsø, Tromsø, Norway.,Department of Gastroenterology, Division of Internal Medicine, University Hospital of North Norway, Tromsø, Norway.,Department of Internal Medicine, Vestre Viken Hospital, Hønefoss, Norway
| | - Kay-Martin Johnsen
- Research Group of Gastroenterology and Nutrition, Department of Clinical Medicine, University of Tromsø, Tromsø, Norway. .,Department of Gastroenterology, Division of Internal Medicine, University Hospital of North Norway, Tromsø, Norway.
| | - Renate Meyer
- Research Group of Gastroenterology and Nutrition, Department of Clinical Medicine, University of Tromsø, Tromsø, Norway
| | - Trine Olsen
- Research Group of Gastroenterology and Nutrition, Department of Clinical Medicine, University of Tromsø, Tromsø, Norway.,Department of Gastroenterology, Division of Internal Medicine, University Hospital of North Norway, Tromsø, Norway
| | - Øystein K Moe
- Research Group of Gastroenterology and Nutrition, Department of Clinical Medicine, University of Tromsø, Tromsø, Norway.,Department of Internal Medicine, Hammerfest Hospital, Hammerfest, Norway
| | - Petter Tandberg
- Department of Internal Medicine, Vestre Viken Hospital, Hønefoss, Norway
| | - Mona D Gundersen
- Research Group of Gastroenterology and Nutrition, Department of Clinical Medicine, University of Tromsø, Tromsø, Norway.,Department of Gastroenterology, Division of Internal Medicine, University Hospital of North Norway, Tromsø, Norway
| | - Jan-Magnus Kvamme
- Research Group of Gastroenterology and Nutrition, Department of Clinical Medicine, University of Tromsø, Tromsø, Norway.,Department of Gastroenterology, Division of Internal Medicine, University Hospital of North Norway, Tromsø, Norway
| | - Knut Johnsen
- Research Group of Gastroenterology and Nutrition, Department of Clinical Medicine, University of Tromsø, Tromsø, Norway.,Department of Internal Medicine, Hammerfest Hospital, Hammerfest, Norway
| | - Terje Løitegård
- Department of Gastroenterology, Vestre Viken Hospital, Drammen, Norway
| | | | - Cecilia Vold
- Department of Gastroenterology, Nordland Hospital, Bodø, Norway
| | - Sveinung W Sørbye
- Department of Pathology, University Hospital of North Norway, Tromsø, Norway
| | - Rasmus Goll
- Research Group of Gastroenterology and Nutrition, Department of Clinical Medicine, University of Tromsø, Tromsø, Norway.,Department of Gastroenterology, Division of Internal Medicine, University Hospital of North Norway, Tromsø, Norway
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Meyer R, Smith C, Sealy L, Mancell S, Marino LV. The use of extensively hydrolysed and amino acid feeds beyond cow's milk allergy: a national survey. J Hum Nutr Diet 2020; 34:13-23. [PMID: 32820586 DOI: 10.1111/jhn.12794] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [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: 01/15/2020] [Revised: 06/04/2020] [Accepted: 06/05/2020] [Indexed: 11/27/2022]
Abstract
BACKGROUND Extensively hydrolysed formulas (EHFs) and amino acid formulas (AAFs) with proven hypoallergenicity are used for children suffering from cow's milk allergy, when breast milk is not available. However, these feeds are often used in other medical conditions where tolerance and absorption of whole protein is affected, frequently without assessment of efficacy. This practice survey assessed the use of these feeds in paediatric conditions other than cow's milk allergy; aiming to describe the population, growth parameters and micronutrient status. METHODS Four National Health Service tertiary paediatric centres participated in this practice survey. Inclusion: children between 0 and 18 years, consuming >25% of their estimated energy requirements of an EHF/AAF for any condition other than allergic disease. Anonymised data were collected: (i) descriptive information; (ii) indications; (iii) type and route of feeding; (iv) growth status and nutritional deficiencies; and (v) medication and vitamin and mineral supplementation. RESULTS One hundred-and-ninety-one children were included with a median age of 19 months (interquartile range 4-63]. Seventeen percent (33/191) were on AAFs and 83% (158/191) were on EHFs. The feeds were commonly used in cancer for 26% and in critical illness for 31%. The majority (73%) of children had enteral feeds via a nasogastric tube. Nutritional biomarkers were performed in 29% of children and 83% were on a vitamin or mineral supplement. CONCLUSIONS This practice survey found that EHFs and AAFs were used in a variety of medical conditions. Indications for feed choice varied, and evidence-based research supporting the use was scarce. Awaiting further research, children on these types of feeds should have regular nutritional monitoring.
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Affiliation(s)
- R Meyer
- Department of Paediatrics, Imperial College, London, UK
| | - C Smith
- Department of Nutrition and Dietetics, Royal Alexandra Children's Hospital, Brighton and Sussex University Hospitals NHS Trust, Brighton, UK
| | - L Sealy
- Department of Nutrition & Dietetics, Bristol Royal Hospital for Children, University Hospitals Bristol NHS Foundation Trust, Bristol, UK
| | - S Mancell
- Department of Nutrition & Dietetics, King's College Hospital NHS Foundation Trust, London, UK
| | - L V Marino
- Department of Dietetics/ Speech Therapy, University Hospital Southampton NHS Foundation Trust, Southampton, UK.,NIHR Biomedical Research Centre Southampton, Southampton, UK.,University Hospital Southampton NHS Foundation Trust and School of Health Sciences, University of Southampton, Southampton, UK.,Department of Nutrition & Dietetics, Faculty of Health and Well Being, University of Winchester, Winchester, UK
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Ezra O, Lahav‐Ezra H, Meyer R, Cahan T, Ilan H, Mazaki‐Tovi S, Sivan E, Barzilay E, Haas J. Cephalic extraction versus breech extraction in second‐stage caesarean section: a retrospective study. BJOG 2020; 127:1568-1574. [DOI: 10.1111/1471-0528.16314] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/29/2020] [Indexed: 11/29/2022]
Affiliation(s)
- O Ezra
- Department of Obstetrics and Gynecology Sheba Medical Center Tel‐Hashomer Israel
- Sackler School of Medicine Tel‐Aviv University Tel Aviv Israel
| | - H Lahav‐Ezra
- Department of Obstetrics and Gynecology Sheba Medical Center Tel‐Hashomer Israel
- Sackler School of Medicine Tel‐Aviv University Tel Aviv Israel
| | - R Meyer
- Department of Obstetrics and Gynecology Sheba Medical Center Tel‐Hashomer Israel
- Sackler School of Medicine Tel‐Aviv University Tel Aviv Israel
| | - T Cahan
- Department of Obstetrics and Gynecology Sheba Medical Center Tel‐Hashomer Israel
- Sackler School of Medicine Tel‐Aviv University Tel Aviv Israel
| | - H Ilan
- Department of Obstetrics and Gynecology Sheba Medical Center Tel‐Hashomer Israel
- Sackler School of Medicine Tel‐Aviv University Tel Aviv Israel
| | - S Mazaki‐Tovi
- Department of Obstetrics and Gynecology Sheba Medical Center Tel‐Hashomer Israel
- Sackler School of Medicine Tel‐Aviv University Tel Aviv Israel
| | - E Sivan
- Department of Obstetrics and Gynecology Sheba Medical Center Tel‐Hashomer Israel
- Sackler School of Medicine Tel‐Aviv University Tel Aviv Israel
| | - E Barzilay
- Department of Obstetrics and Gynecology Samson Assuta Ashdod University Hospital Ashdod Israel
- Faculty of Health Sciences Ben‐Gurion University of the Negev Beer‐Sheva Israel
| | - J Haas
- Department of Obstetrics and Gynecology Sheba Medical Center Tel‐Hashomer Israel
- Sackler School of Medicine Tel‐Aviv University Tel Aviv Israel
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28
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Beckmann A, Meyer R, Lewandowski J, Markewitz A, Gummert J. German Heart Surgery Report 2019: The Annual Updated Registry of the German Society for Thoracic and Cardiovascular Surgery. Thorac Cardiovasc Surg 2020; 68:263-276. [PMID: 32408357 DOI: 10.1055/s-0040-1710569] [Citation(s) in RCA: 47] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
Based on a longtime voluntary registry, founded by the German Society for Thoracic and Cardiovascular Surgery (GSTCVS) in 1980, well-defined data of all cardiac, thoracic, and vascular surgery procedures performed in 78 German heart surgery departments during the year 2019 are analyzed. For this period, a total of 175,705 procedures were submitted to the registry, 100,446 summarized as heart surgery procedures in a classical sense. The unadjusted in-hospital survival rate for the 34,224 isolated coronary artery bypass grafting procedures (relationship on-/off-pump 3.8:1) was 97.3%. For the 36,650 isolated heart valve procedures (16,625 transcatheter interventions included), it was 96.4%. Concerning short- and long-term circulatory support, a total of 2,716 extracorporeal life support/extracorporeal membrane oxygenation implantations, resp. 953 assist device implantations (L-/ R-/ BVAD, TAH) were registered. In 2019, the number of isolated heart transplantations increased to 333, a rise of 6.7% compared to the previous year. The isolated lung transplantations amounted to 311, a decrease of 8.5%. This annually updated registry of the GSTCVS represents voluntary public reporting by accumulating actual information for nearly all heart surgical procedures in Germany, constitutes advancements in heart medicine, and represents a basis for quality management for all participating institutions. In addition, the registry demonstrates that the provision of cardiac surgery in Germany is up to date, appropriate, and nationwide patient treatment is guaranteed all the time.
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Affiliation(s)
- Andreas Beckmann
- German Society for Thoracic and Cardiovascular Surgery, Langenbeck-Virchow-Haus, Berlin, Germany
| | - Renate Meyer
- BQS Institute for Quality and Patient Safety, Hamburg, Germany
| | - Jana Lewandowski
- German Society for Thoracic and Cardiovascular Surgery, Langenbeck-Virchow-Haus, Berlin, Germany
| | - Andreas Markewitz
- German Society for Thoracic and Cardiovascular Surgery, Langenbeck-Virchow-Haus, Berlin, Germany
| | - Jan Gummert
- Clinic for Thoracic and Cardiovascular Surgery, Heart and Diabetes Center NRW, Bad Oeynhausen, Germany
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29
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Ram E, Meyer R, Carter D, Gutman M, Rosin D, Horesh N. The efficacy of sacral neuromodulation in the treatment of low anterior resection syndrome: a systematic review and meta-analysis. Tech Coloproctol 2020; 24:803-815. [PMID: 32350733 DOI: 10.1007/s10151-020-02231-8] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [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: 12/03/2019] [Accepted: 04/22/2020] [Indexed: 12/17/2022]
Abstract
BACKGROUND Sacral neuromodulation (SNM) has become one of the main treatment options in patients with fecal incontinence. The aim of this study was to determine the efficacy of sacral neuromodulation in the treatment of low anterior resection syndrome (LARS). METHODS A systematic review was conducted according to the Preferred Reporting Items for Systematic Reviews and Meta-analyses (PRISMA) guidelines. The search was conducted using the Pubmed, Embase, Ovid, and Cochrane databases, restricted to the English language and to articles published from 2000 to November 2018. RESULTS A total of 434 articles on the efficacy of SNM in the treatment of LARS were retrieved, and 13 studies were included in the final analysis, with a total of 114 patients treated with SNM for LARS The overall success rate excluding study heterogeneity was 83.30% [95% CI (71.33-95.25%)]. Improvement in anal continence was seen in several clinical and functional parameters, including the Wexner Score [10.78 points, 95% CI (8.55-13.02), p < 0.0001], manometric maximum resting pressure [mean improvement of 6.37 mm/Hg, 95% CI (2.67-10.07), p = 0.0007], maximum squeeze pressure [mean improvement of 17.99 mm/Hg, 95% CI (17.42-18.56), p < 0.0001] and maximum tolerated volume [mean improvement of 22.74 ml, 95% CI (10.65-34.83), p = 0.0002]. Quality of life questionnaires also demonstrated significant improvement in patients' quality of life, but were reported only in a small group of included patients. CONCLUSIONS SNM significantly improves symptoms and quality of life in patients suffering from fecal incontinence following low anterior resection.
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Affiliation(s)
- E Ram
- Department of Surgery B, Sheba Medical Centre, Tel Hashomer, Israel.
- Tel Aviv University, Tel Aviv, Israel.
| | - R Meyer
- Tel Aviv University, Tel Aviv, Israel
- Department of Gynecology and Obstetrics, Sheba Medical Centre, Tel Hashomer, Israel
| | - D Carter
- Tel Aviv University, Tel Aviv, Israel
- Department of Gastroenterology, Sheba Medical Centre, Tel Hashomer, Israel
| | - M Gutman
- Department of Surgery B, Sheba Medical Centre, Tel Hashomer, Israel
- Tel Aviv University, Tel Aviv, Israel
| | - D Rosin
- Department of Surgery B, Sheba Medical Centre, Tel Hashomer, Israel
- Tel Aviv University, Tel Aviv, Israel
| | - N Horesh
- Department of Surgery B, Sheba Medical Centre, Tel Hashomer, Israel
- Tel Aviv University, Tel Aviv, Israel
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30
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Lipp M, Brodmann P, Pietsch K, Pauwels J, Anklam E, Börchers T, Braunschweiger G, Busch U, Eklund E, Eriksen FD, Fagan J, Fellinger A, Gaugitsch H, Hayes D, Hertel C, Hörtner H, Joudrier P, Kruse L, Meyer R, Miraglia M, Müller W, Philipp P, Pöpping B, Rentsch R, Sawyer J, Schulze M, van Duijn G, Vollenhofer S, Wurtz A. IUPAC Collaborative Trial Study of a Method To Detect Genetically Modified Soy Beans and Maize in Dried Powder. J AOAC Int 2020. [DOI: 10.1093/jaoac/82.4.923] [Citation(s) in RCA: 167] [Impact Index Per Article: 41.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Abstract
This paper presents results of a collaborative trial study (IUPAC project No. 650/93/97) involving 29 laboratories in 13 countries applying a method for detecting genetically modified organisms (GMOs) in food. The method is based on using the polymerase chain reaction to determine the 35S promoter and the NOS terminator for detection of GMOs. Reference materials were produced that were derived from genetically modified soy beans and maize. Correct identification of samples containing 2% GMOs is achievable for both soy beans and maize. For samples containing 0.5% genetically modified soy beans, analysis of the 35S promoter resulted also in a 100% correct classification. However, 3 false-negative results (out of 105 samples analyzed) were reported for analysis of the NOS terminator, which is due to the lower sensitivity of this method. Because of the bigger genomic DNA of maize, the probability of encountering false-negative results for samples containing 0.5% GMOs is greater for maize than for soy beans. For blank samples (0% GMO), only 2 false-positive results for soy beans and one for maize were reported. These results appeared as very weak signals and were most probably due to contamination of laboratory equipment.
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Affiliation(s)
- Markus Lipp
- The National Physical Laboratory of Israel (INPL), Danciger A Bldg., Givat Ram, Jerusalem 91904, Israel, Tel: +972-2-6536534, Fax: +972-2-6520797
| | - Peter Brodmann
- Kantonales Labor Basel, Postfach, CH-4012 Basel, Switzerland
| | - Klaus Pietsch
- Chemische Landesuntersuchungsanstalt Freiburg, Bissierstrasse 5, D-79114 Freiburg, Germany
| | - Jean Pauwels
- European Commission, DG Joint Research Center, Institute for Reference Materials and Measurements, Retieseweg, B-2440 Geel, Belgium
| | - Elke Anklam
- European Commission, DG Joint Research Center, Institute for Health and Consumer Protection, Food Products Unit, 1-21020 Ispra(Va), Italy
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32
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Russbueldt P, Weitenberg J, Schulte J, Meyer R, Meinhardt C, Hoffmann HD, Poprawe R. Scalable 30 fs laser source with 530 W average power. Opt Lett 2019; 44:5222-5225. [PMID: 31674973 DOI: 10.1364/ol.44.005222] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/02/2019] [Accepted: 09/17/2019] [Indexed: 06/10/2023]
Abstract
We present a power-scalable laser source with 30 fs pulse duration, 530 W average power at 500 kHz repetition rate, and beam quality M2<1.2. The compact and efficient setup consists of ytterbium-based Innoslab amplifiers and subsequent nonlinear pulse compression with an argon-filled Herriott cell.
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33
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Gholmie Y, Lozinsky A, Godwin H, Reeve K, Dzubiak R, Shah N, Meyer R. Tolerance of soya lecithin in children with non‐immunoglobulin E‐mediated soya allergy: a randomised, double‐blind, cross‐over trial. J Hum Nutr Diet 2019; 33:232-240. [DOI: 10.1111/jhn.12708] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Y. Gholmie
- Department of Health and Behavioral Sciences Teachers College of Columbia University New York, NY USA
| | - A.C. Lozinsky
- Department of Gastroenterology Great Ormond Street Hospital for Children NHS Foundation Trust London UK
| | - H. Godwin
- Great Ormond Street Hospital London UK
| | - K. Reeve
- Paediatric A&E The Royal London Hospital London UK
| | | | - N. Shah
- Great Ormond Street Hospital London UK
| | - R. Meyer
- Imperial College London London UK
- Department Paediatrics Imperial College London London UK
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34
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Hjorth D, Meyer R, Reay T. Introduction to the X and Organization Studies issue. Organization Studies 2019. [DOI: 10.1177/0170840619877117] [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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Meyer R, Schacht S, Buschmann L, Begemann M, Kraft F, Haag N, Kochs A, Schulze A, Kurth I, Elbracht M. Biallelic CSGALNACT1-mutations cause a mild skeletal dysplasia. Bone 2019; 127:446-451. [PMID: 31325655 DOI: 10.1016/j.bone.2019.07.016] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/13/2019] [Revised: 07/03/2019] [Accepted: 07/14/2019] [Indexed: 11/16/2022]
Abstract
Genetic causes of skeletal disorders are manifold and affect, among others, enzymes of bone and connective tissue synthesis pathways. We present a twelve-year-old boy with a mild skeletal dysplasia, hypermobility of joints and axial malalignment of lower limbs and feet. Exome sequencing revealed a biallelic loss of function mutation in CSGALNACT1, which encodes chondroitin sulfate N-acetylgalactosaminyltransferase 1 and plays a major role in the chondroitin sulfate chain biosynthesis and therefore in the synthesis of glycosaminoglycans. Recently, the first case of a pediatric patient with a mild skeletal dysplasia due to a compound heterozygous large intragenic deletion and a damaging missense variant in CSGALNACT1 was reported. We here identify a second case and the first juvenile patient with a homozygous frameshift variant in CSGALNACT1 which corroborates its role in mild and non-progressive skeletal dysplasia with joint laxity.
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Affiliation(s)
- R Meyer
- Institute of Human Genetics, Medical Faculty, RWTH Aachen University, Aachen, Germany
| | - S Schacht
- Department for Radiology, Medical Faculty, RWTH Aachen University, Aachen, Germany
| | - L Buschmann
- Institute of Human Genetics, Medical Faculty, RWTH Aachen University, Aachen, Germany
| | - M Begemann
- Institute of Human Genetics, Medical Faculty, RWTH Aachen University, Aachen, Germany
| | - F Kraft
- Institute of Human Genetics, Medical Faculty, RWTH Aachen University, Aachen, Germany
| | - N Haag
- Institute of Human Genetics, Medical Faculty, RWTH Aachen University, Aachen, Germany
| | - A Kochs
- Gemeinschaftspraxis Dr. Kochs/Dr. Rode, Aachen, Germany
| | - A Schulze
- Department for Orthopedics, Medical Faculty, RWTH Aachen University, Aachen, Germany
| | - I Kurth
- Institute of Human Genetics, Medical Faculty, RWTH Aachen University, Aachen, Germany
| | - M Elbracht
- Institute of Human Genetics, Medical Faculty, RWTH Aachen University, Aachen, Germany.
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Elbracht M, Meyer R, Eggermann T, Kurth I. [Rational use of genetic tests in internal medicine : Possibilities and limitations of next generation sequencing diagnostics]. Internist (Berl) 2019; 59:756-765. [PMID: 29946883 DOI: 10.1007/s00108-018-0457-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
BACKGROUND New methods of molecular genetic diagnostics enable a more comprehensive genetic analysis of patients. OBJECTIVES Rational use and benefits of molecular genetic testing in patients with various internal diseases. METHOD Evaluation of topic-related literature, discussion of own experiences, as well as consideration of current guidelines. RESULTS New genetic tests, such as next generation sequencing (NGS), improve the diagnosis of hereditary diseases; however, the use of this technology also leads to additional findings, which must be carefully considered. CONCLUSION The rational use of genetic tests is a benefit for patients and can significantly influence the prevention and treatment of a disease. The increasing complexity of genetic findings requires interdisciplinary approaches involving human genetics, internal medicine, and other disciplines.
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Affiliation(s)
- M Elbracht
- Institut für Humangenetik, Uniklinik RWTH Aachen, Pauwelsstr. 30, 52074, Aachen, Deutschland
| | - R Meyer
- Institut für Humangenetik, Uniklinik RWTH Aachen, Pauwelsstr. 30, 52074, Aachen, Deutschland
| | - T Eggermann
- Institut für Humangenetik, Uniklinik RWTH Aachen, Pauwelsstr. 30, 52074, Aachen, Deutschland
| | - I Kurth
- Institut für Humangenetik, Uniklinik RWTH Aachen, Pauwelsstr. 30, 52074, Aachen, Deutschland.
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Yu Y, Zou Z, Wang S, Meyer R. Bayesian nonparametric modelling of the link function in the single-index model using a Bernstein–Dirichlet process prior. J STAT COMPUT SIM 2019. [DOI: 10.1080/00949655.2019.1663191] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- Yang Yu
- School of Economics and Management, Beihang University, Beijing, People's Republic of China
| | - Zhihong Zou
- School of Economics and Management, Beihang University, Beijing, People's Republic of China
| | - Shanshan Wang
- School of Economics and Management, Beihang University, Beijing, People's Republic of China
| | - Renate Meyer
- Department of Statistics, The University of Auckland, Auckland, New Zealand
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38
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Meyer R. Using Energy Crops for Biofuels or Food: The Choice. Von A. Paschalidou, M. Tsatiris, K. Kitikidou, C. Papadopoulou. CHEM-ING-TECH 2019. [DOI: 10.1002/cite.201970809] [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: 11/12/2022]
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39
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Beckmann A, Meyer R, Lewandowski J, Markewitz A, Harringer W. German Heart Surgery Report 2018: The Annual Updated Registry of the German Society for Thoracic and Cardiovascular Surgery. Thorac Cardiovasc Surg 2019; 67:331-344. [PMID: 31311036 DOI: 10.1055/s-0039-1693022] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
Based on a longtime voluntary registry, founded by the German Society for Thoracic and Cardiovascular Surgery (GSTCVS), well-defined data of all cardiac, thoracic, and vascular surgery procedures performed in 78 German heart surgery departments during the year 2018 are analyzed. For this period, a total of 174,902 procedures were submitted to the registry, 98,707 summarized as heart surgery procedures in the classical meaning. The unadjusted in-hospital survival rate for 33,999 isolated coronary artery bypass grafting procedures (relationship on-/off-pump 3.8:1) was 97.1% and for 34,915 isolated heart valve procedures, 14,396 transcatheter interventions included, it was 96.0%. Concerning short- and long-term circulatory supports, a total of 2,871 extracorporeal life support (ECLS)/extracorporeal membrane oxygenation (ECMO) implants, respectively, 942 assist device implantations (L-/R-/BVAD, TAH) were registered. In 2018, the number of isolated heart transplantations increased to 312, a growth of 23% compared with the previous year. The isolated lung transplantations reached 340, a rise of nearly 19%. This annual updated registry of the GSTCVS represents voluntary public reporting by accumulating actual information for nearly all heart surgical procedures in Germany, constitutes advancements in heart medicine, and is a basis for quality management for all participating institutions. In addition, the registry demonstrates that the provision of cardiac surgery in Germany is appropriate and nationwide patient treatment is guaranteed all the time.
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Affiliation(s)
- Andreas Beckmann
- German Society for Thoracic and Cardiovascular Surgery, Langenbeck-Virchow-Haus, Berlin, Germany
| | - Renate Meyer
- BQS Institute for Quality and Patient Safety, Düsseldorf, Germany
| | - Jana Lewandowski
- German Society for Thoracic and Cardiovascular Surgery, Langenbeck-Virchow-Haus, Berlin, Germany
| | - Andreas Markewitz
- German Society for Thoracic and Cardiovascular Surgery, Langenbeck-Virchow-Haus, Berlin, Germany
| | - Wolfgang Harringer
- Clinic for Cardiac, Thoracic and Vascular Surgery, Klinikum Braunschweig GmbH, Braunschweig, Germany
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40
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Meyer R, Lewandowski J, Frie M, Markewitz A, Harringer W, Beckmann A. German Heart Surgery Report 2017: The Annual Updated Registry of the German Society for Thoracic and Cardiovascular Surgery. Thorac Cardiovasc Surg 2018; 66:608-621. [DOI: 10.1055/s-0038-1676131] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
AbstractBased on a longtime voluntary registry, founded by the German Society for Thoracic and Cardiovascular Surgery (GSTCVS), well-defined data of all cardiac, thoracic, and vascular surgery procedures performed in 78 German heart surgery departments during the year 2017 are analyzed. In 2017, a total of 179,337 procedures were submitted to the registry, and 101,728 were summarized as heart surgery procedures in the narrower sense. About 16.8% of these patients were at least 80 years old, resulting in an increase of 1.1% compared with the data of 2016. The 36,273 isolated coronary artery bypass grafting procedures (relationship on-/off-pump 4.2:1) were associated with an unadjusted in-hospital survival rate of 97.3%. Concerning the 34,394 isolated heart valve procedures (including 12,965 transcatheter interventions), the unadjusted in-hospital survival rate was 96.0%.This annual updated registry of the GSTCVS represents voluntary public reporting by accumulating actual information for nearly all heart surgical procedures in Germany, describes advancements in heart medicine, and is a basis for in- and external quality assurance for all participating institutions. In addition, the registry demonstrates that the provision of cardiac surgery in Germany is appropriate, and nationwide patient treatment is guaranteed at any time.
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Affiliation(s)
- Renate Meyer
- BQS Institute for Quality and Patient Safety, Düsseldorf, Germany
| | - Jana Lewandowski
- Deutsche Gesellschaft für, Thorax-, Herz- und Gefäßchirurgie [DGTHG], Langenbeck-Virchow-Haus, Luisenstr. 58-59, 10117 Berlin, Germany
| | - Michael Frie
- FOM Hochschule fuer Oekonomie & Management, Essen, Germany
| | - Andreas Markewitz
- Deutsche Gesellschaft für, Thorax-, Herz- und Gefäßchirurgie [DGTHG], Langenbeck-Virchow-Haus, Luisenstr. 58-59, 10117 Berlin, Germany
| | - Wolfgang Harringer
- Clinic for Cardiac, Thoracic and Vascular Surgery, Klinikum Braunschweig gGmbH, Braunschweig, Germany
| | - Andreas Beckmann
- Deutsche Gesellschaft für, Thorax-, Herz- und Gefäßchirurgie [DGTHG], Langenbeck-Virchow-Haus, Luisenstr. 58-59, 10117 Berlin, Germany
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Meyer R, Wright K, Vieira MC, Chong KW, Chatchatee P, Vlieg-Boerstra BJ, Groetch M, Dominguez-Ortega G, Heath S, Lang A, Archibald-Durham L, Rao R, De Boer R, Assa'ad A, Trewella E, Venter C. International survey on growth indices and impacting factors in children with food allergies. J Hum Nutr Diet 2018; 32:175-184. [DOI: 10.1111/jhn.12610] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- R. Meyer
- Department Paediatrics; Imperial College; London UK
| | - K. Wright
- Allergy Service; Department of Paediatric Medicine; KK Women's and Children's Hospital; Singapore Singapore
| | - M. C. Vieira
- Center for Pediatric Gastroenterology (Hospital Pequeno Príncipe) and School of Medicine (Pontifical University of Paraná); Curitiba Brazil
| | - K. W. Chong
- Allergy Service; Department of Paediatric Medicine; KK Women's and Children's Hospital; Singapore Singapore
| | - P. Chatchatee
- Division of Allergy and Immunology; Department of Pediatrics; Faculty of Medicine; King Chulalongkorn Memorial Hospital; Chulalongkorn University; Bangkok Thailand
| | | | - M. Groetch
- Division of Paediatric Allergy & Immunology; Icahn School of Medicine at Mount Sinai; New York NY USA
| | - G. Dominguez-Ortega
- Gastroenterology and Nutrition Department; Children Hospital Niño Jesús University Children Hospital; Madrid Spain
| | - S. Heath
- Department of Dietetics; Kings College Hospital NHS Trust; London UK
| | - A. Lang
- Wits University Donald Gordon Medical Centre; Johannesburg South Africa
| | | | - R. Rao
- KK women's and Children's Hospital; Singapore Singapore
| | - R. De Boer
- Department of Pediatric Allergy; Guy's and St. Thomas National Health Service Trust; London UK
| | - A. Assa'ad
- Division of Allergy and Immunology; Cincinnati Children's Hospital; Cincinnati OH USA
| | - E. Trewella
- Department Nutrition and Dietetics; Chelsea and Westminster Hospital; London UK
| | - C. Venter
- Children's Hospital Colorado; Aurora Colorado USA
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Loureiro D, Moura-Costa LF, Jordão RS, Menezes NC, Macedo ES, Guimarães TS, Meyer R, Portela RW. Seroprevalence of antibodies against bacterial pathogens in sheep from Equatorial Guinea. REV SCI TECH OIE 2018; 36:965-970. [PMID: 30160687 DOI: 10.20506/rst.36.3.2728] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Equatorial Guinea (EG) is a country in Central Africa with typical tropical weather. Sheep are an important source of food in EG, but the absence of information regarding infectious diseases that affect the native flocks of small ruminants is a concern. The country is currently implementing several new practices in the sheep industry associated with the importation of sheep from other countries. This study aimed to evaluate the seroprevalence of bacterial infections that are important to the sheep industry in EG sheep flocks. The detection of specific antibodies for the four agents studied was performed using enzyme-linked immunosorbent assay in 1,002 serum samples from EG sheep. The results showed a true prevalence of 13.37% for antibodies against Corynebacterium pseudotuberculosis, 0.59% for Brucella ovis, 19.89% for Chlamydophila abortus and 0.79% for Mycoplasma agalactiae in animals from production flocks. Among a group of 35 samples from isolated native animals, 47.56% were seropositive for antibodies against C. pseudotuberculosis, 42.84% for B. ovis, 54.28% for C. abortus and 11.35% for M. agalactiae. These results comprise the first report of the prevalence of infectious diseases in sheep in EG. They highlight the importance of adopting adequate measures to prevent infection by bacteria endemic to EG native flocks during the development of the sheep industry in the country.
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Gil-Villalba A, Meyer R, Giust R, Rapp L, Billet C, Courvoisier F. Single shot femtosecond laser nano-ablation of CVD monolayer graphene. Sci Rep 2018; 8:14601. [PMID: 30279433 PMCID: PMC6168448 DOI: 10.1038/s41598-018-32957-3] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [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: 02/28/2017] [Accepted: 09/19/2018] [Indexed: 11/28/2022] Open
Abstract
We investigate ablation of CVD monolayer graphene by femtosecond pulses in the single shot regime. We show that the ablation probability of flat graphene drastically reduces for small illumination diameters even if the ablation threshold is exceeded. However, the presence of graphene wrinkles enhances the ablation probability. This is interpreted in terms of electron and energy diffusion within the graphene layer. This differentiated behavior is a drawback for single shot laser nanopatterning. The morphology of the holes with minimal diameter depends on the fluence distribution at ablation threshold. Strong fluence gradients due to strong focussing produce an explosive folding of graphene during ablation.
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Affiliation(s)
- A Gil-Villalba
- FEMTO-ST institute, Univ. Bourgogne Franche-Comté, CNRS, 15B avenue des Montboucons, 25030, Besançon Cedex, France
| | - R Meyer
- FEMTO-ST institute, Univ. Bourgogne Franche-Comté, CNRS, 15B avenue des Montboucons, 25030, Besançon Cedex, France
| | - R Giust
- FEMTO-ST institute, Univ. Bourgogne Franche-Comté, CNRS, 15B avenue des Montboucons, 25030, Besançon Cedex, France
| | - L Rapp
- FEMTO-ST institute, Univ. Bourgogne Franche-Comté, CNRS, 15B avenue des Montboucons, 25030, Besançon Cedex, France
| | - C Billet
- FEMTO-ST institute, Univ. Bourgogne Franche-Comté, CNRS, 15B avenue des Montboucons, 25030, Besançon Cedex, France
| | - F Courvoisier
- FEMTO-ST institute, Univ. Bourgogne Franche-Comté, CNRS, 15B avenue des Montboucons, 25030, Besançon Cedex, France.
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Meyer R, Bar-Yosef O, Barzilay E, Hoffman D, Toussia-Cohen S, Zvi E, Achiron R, Katorza E. Neurodevelopmental outcome of fetal isolated ventricular asymmetry without dilation: a cohort study. Ultrasound Obstet Gynecol 2018; 52:467-472. [PMID: 29607569 DOI: 10.1002/uog.19065] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/18/2017] [Revised: 02/10/2018] [Accepted: 03/23/2018] [Indexed: 06/08/2023]
Abstract
OBJECTIVE Fetal isolated ventricular asymmetry (IVA) is a relatively common finding in pregnancy, but data regarding its effect on neurodevelopmental outcome are scarce and founded principally on ultrasound-based studies. The purpose of this study was to assess the neurodevelopmental outcome of IVA cases in a magnetic resonance imaging (MRI)-based study. METHODS Cases referred for fetal brain MRI as part of the assessment of IVA without ventriculomegaly (lateral ventricular atrial diameter ≤ 10 mm), identified during routine ultrasound examination, were assessed for possible inclusion. Asymmetry was defined as a difference in width of ≥ 2 mm between the two lateral ventricles. Forty-three cases were included in the study group and compared with a control group of 94 normal cases without IVA. Children were assessed at ages 13-74 months using the Vineland-II Adaptive Behavior Scales (VABS-II). RESULTS VABS-II scores were within normal range. There was no significant difference in composite VABS-II score between the study and control groups (106.5 vs 108.0; P = 0.454). VABS-II scores did not differ between the groups when matched for gender and age at VABS-II interview (109.6 in study group vs 107.8 in control group; P = 0.690). CONCLUSION In cases of IVA without ventriculomegaly on MRI, neurodevelopmental test scores were normal and did not differ from cases without IVA. Copyright © 2018 ISUOG. Published by John Wiley & Sons Ltd.
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Affiliation(s)
- R Meyer
- Department of Obstetrics and Gynecology, The Chaim Sheba Medical Center, Ramat-Gan, Israel
- Sackler School of Medicine, Tel Aviv University, Tel Aviv-Yafo, Israel
| | - O Bar-Yosef
- Sackler School of Medicine, Tel Aviv University, Tel Aviv-Yafo, Israel
- Pediatric Neurology Unit, The Chaim Sheba Medical Center, Ramat-Gan, Israel
| | - E Barzilay
- Department of Obstetrics and Gynecology, The Chaim Sheba Medical Center, Ramat-Gan, Israel
- Sackler School of Medicine, Tel Aviv University, Tel Aviv-Yafo, Israel
| | - D Hoffman
- Sackler School of Medicine, Tel Aviv University, Tel Aviv-Yafo, Israel
| | - S Toussia-Cohen
- Sackler School of Medicine, Tel Aviv University, Tel Aviv-Yafo, Israel
| | - E Zvi
- Sackler School of Medicine, Tel Aviv University, Tel Aviv-Yafo, Israel
| | - R Achiron
- Department of Obstetrics and Gynecology, The Chaim Sheba Medical Center, Ramat-Gan, Israel
- Sackler School of Medicine, Tel Aviv University, Tel Aviv-Yafo, Israel
| | - E Katorza
- Department of Obstetrics and Gynecology, The Chaim Sheba Medical Center, Ramat-Gan, Israel
- Sackler School of Medicine, Tel Aviv University, Tel Aviv-Yafo, Israel
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Andersen L, Conrad M, Gil J, Hu X, Reynolds W, Schmidt L, Hartge E, Häring H, Kreft C, Meyer R, Zetzl C, Heinrich S, Kaltschmitt M, Lim C, Smirnova I. Aufbau einer Vollverwertungskette für ligninhaltige Biomasse über Hochdruckverfahrenstechnik: Neue Produkte durch Extraktion, Hydrolyse, überkritische Trocknung und Extrusion. CHEM-ING-TECH 2018. [DOI: 10.1002/cite.201855120] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- L. Andersen
- Verbio Bioenergie AG; Thura Mark 18 06780 Zörbig Deutschland
| | - M. Conrad
- Sigmar Mothes Hochdrucktechnik; Vollmerstraße 7b 14489 Berlin Deutschland
| | - J. Gil
- Technische Universität Hamburg; Institut für Thermische Verfahrenstechnik; Eissendorfer Straße 38 21073 Hamburg Deutschland
| | - X. Hu
- Technische Universität Hamburg; Institut für Thermische Verfahrenstechnik; Eissendorfer Straße 38 21073 Hamburg Deutschland
| | - W. Reynolds
- Technische Universität Hamburg; Institut für Thermische Verfahrenstechnik; Eissendorfer Straße 38 21073 Hamburg Deutschland
| | - L. M. Schmidt
- Technische Universität Hamburg; Institut für Umwelttechnik und Energiewirtschaft; Eissendorfer Straße 40 21073 Hamburg Deutschland
| | - E. U. Hartge
- Technische Universität Hamburg; Institut für Feststoffverfahrenstechnik; Denickestraße 15 21073 Hamburg Deutschland
| | - H. Häring
- Sigmar Mothes Hochdrucktechnik; Vollmerstraße 7b 14489 Berlin Deutschland
| | - C. Kreft
- Verbio Bioenergie AG; Thura Mark 18 06780 Zörbig Deutschland
| | - R. Meyer
- Technische Universität Hamburg; Institut für Thermische Verfahrenstechnik; Eissendorfer Straße 38 21073 Hamburg Deutschland
| | - C. Zetzl
- Technische Universität Hamburg; Institut für Thermische Verfahrenstechnik; Eissendorfer Straße 38 21073 Hamburg Deutschland
| | - S. Heinrich
- Technische Universität Hamburg; Institut für Feststoffverfahrenstechnik; Denickestraße 15 21073 Hamburg Deutschland
| | - M. Kaltschmitt
- Technische Universität Hamburg; Institut für Umwelttechnik und Energiewirtschaft; Eissendorfer Straße 40 21073 Hamburg Deutschland
| | - C. Lim
- tesa SE; Forschung und Entwicklung; Hugo-Kirchberg-Straße 1 22848 Norderstedt Deutschland
| | - I. Smirnova
- Technische Universität Hamburg; Institut für Thermische Verfahrenstechnik; Eissendorfer Straße 38 21073 Hamburg Deutschland
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Lieback E, Nawrocki M, Meyer R, Bellach J, Warnecke H, Cohnert T. The clinical value of ultrasonic tissue characterization in the management of heart transplant patients. Transpl Int 2018. [DOI: 10.1111/tri.1992.5.s1.231] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [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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Romeo JS, Meyer R, Gallardo DI. Bayesian bivariate survival analysis using the power variance function copula. Lifetime Data Anal 2018; 24:355-383. [PMID: 28536818 DOI: 10.1007/s10985-017-9396-1] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/28/2016] [Accepted: 05/16/2017] [Indexed: 06/07/2023]
Abstract
Copula models have become increasingly popular for modelling the dependence structure in multivariate survival data. The two-parameter Archimedean family of Power Variance Function (PVF) copulas includes the Clayton, Positive Stable (Gumbel) and Inverse Gaussian copulas as special or limiting cases, thus offers a unified approach to fitting these important copulas. Two-stage frequentist procedures for estimating the marginal distributions and the PVF copula have been suggested by Andersen (Lifetime Data Anal 11:333-350, 2005), Massonnet et al. (J Stat Plann Inference 139(11):3865-3877, 2009) and Prenen et al. (J R Stat Soc Ser B 79(2):483-505, 2017) which first estimate the marginal distributions and conditional on these in a second step to estimate the PVF copula parameters. Here we explore an one-stage Bayesian approach that simultaneously estimates the marginal and the PVF copula parameters. For the marginal distributions, we consider both parametric as well as semiparametric models. We propose a new method to simulate uniform pairs with PVF dependence structure based on conditional sampling for copulas and on numerical approximation to solve a target equation. In a simulation study, small sample properties of the Bayesian estimators are explored. We illustrate the usefulness of the methodology using data on times to appendectomy for adult twins in the Australian NH&MRC Twin registry. Parameters of the marginal distributions and the PVF copula are simultaneously estimated in a parametric as well as a semiparametric approach where the marginal distributions are modelled using Weibull and piecewise exponential distributions, respectively.
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Affiliation(s)
- Jose S Romeo
- Department of Mathematics, University of Santiago, Santiago, Chile.
- SHORE and Whariki Research Centre, College of Health, Massey University, Auckland, New Zealand.
| | - Renate Meyer
- Department of Statistics, University of Auckland, Auckland, New Zealand
| | - Diego I Gallardo
- Departamento de Matematicas, Facultad de Ingenieria, Universidad de Atacama, Copiapo, Chile
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Bednarek AT, Wyborn C, Cvitanovic C, Meyer R, Colvin RM, Addison PFE, Close SL, Curran K, Farooque M, Goldman E, Hart D, Mannix H, McGreavy B, Parris A, Posner S, Robinson C, Ryan M, Leith P. Boundary spanning at the science-policy interface: the practitioners' perspectives. Sustain Sci 2018; 13:1175-1183. [PMID: 30147800 PMCID: PMC6086300 DOI: 10.1007/s11625-018-0550-9] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/14/2017] [Accepted: 03/08/2018] [Indexed: 05/24/2023]
Abstract
Cultivating a more dynamic relationship between science and policy is essential for responding to complex social challenges such as sustainability. One approach to doing so is to "span the boundaries" between science and decision making and create a more comprehensive and inclusive knowledge exchange process. The exact definition and role of boundary spanning, however, can be nebulous. Indeed, boundary spanning often gets conflated and confused with other approaches to connecting science and policy, such as science communication, applied science, and advocacy, which can hinder progress in the field of boundary spanning. To help overcome this, in this perspective, we present the outcomes from a recent workshop of boundary-spanning practitioners gathered to (1) articulate a definition of what it means to work at this interface ("boundary spanning") and the types of activities it encompasses; (2) present a value proposition of these efforts to build better relationships between science and policy; and (3) identify opportunities to more effectively mainstream boundary-spanning activities. Drawing on our collective experiences, we suggest that boundary spanning has the potential to increase the efficiency by which useful research is produced, foster the capacity to absorb new evidence and perspectives into sustainability decision-making, enhance research relevance for societal challenges, and open new policy windows. We provide examples from our work that illustrate this potential. By offering these propositions for the value of boundary spanning, we hope to encourage a more robust discussion of how to achieve evidence-informed decision-making for sustainability.
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Affiliation(s)
| | - C. Wyborn
- Luc Hoffmann Institute, WWF International, Gland, Switzerland
- College of Forestry and Conservation, University of Montana, Missoula, Montana USA
| | - C. Cvitanovic
- Centre for Marine Socioecology, University of Tasmania, Hobart, Tasmania Australia
| | - R. Meyer
- Center for Community and Citizen Science, University of California, Davis, California USA
| | - R. M. Colvin
- Climate Change Institute, Australian National University, Canberra, Australia
| | | | - S. L. Close
- The Pew Charitable Trusts, Washington, DC, USA
| | - K. Curran
- The Pew Charitable Trusts, Washington, DC, USA
| | - M. Farooque
- Consortium for Science, Policy and Outcomes, Arizona State University, Tempe, Arizona USA
| | - E. Goldman
- COMPASS Science Communication, Portland, Oregon USA
| | - D. Hart
- Senator George J. Mitchell Center for Sustainability Solutions, School of Biology and Ecology, University of Maine, Orono, Maine USA
| | - H. Mannix
- COMPASS Science Communication, Portland, Oregon USA
| | - B. McGreavy
- Department of Communication and Journalism, Senator George J. Mitchell Center for Sustainability Solutions, University of Maine, Orono, Maine USA
| | - A. Parris
- Science and Resilience Institute at Jamaica Bay, City University of New York, Brooklyn College, New York, New York USA
| | - S. Posner
- COMPASS Science Communication, Portland, Oregon USA
- Gund Institute for Environment, University of Vermont, Burlington, Vermont USA
| | - C. Robinson
- Engaging Scientists and Engineers in Policy, Washington, DC, USA
| | - M. Ryan
- Luc Hoffmann Institute, WWF International, Gland, Switzerland
- University of Cambridge Conservation Research Institute, Cambridge, UK
| | - P. Leith
- Tasmanian Institute of Agriculture, School of Land and Food, University of Tasmania, Hobart, Tasmania Australia
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Träger J, Melichar VO, Meyer R, Rauh M, Bogdan C, Held J. Serum (1→3)-β-D-glucan and galactomannan levels in patients with cystic fibrosis: a retrospective cohort study. BMC Pulm Med 2018; 18:52. [PMID: 29587700 PMCID: PMC5870392 DOI: 10.1186/s12890-018-0614-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2017] [Accepted: 03/13/2018] [Indexed: 12/31/2022] Open
Abstract
Background Aspergillus fumigatus is frequently encountered in sputum samples of patients with cystic fibrosis (CF), which traditionally has been interpreted as saprophytic airway colonization. However, this mere bystander role has been challenged by recent data. There is now evidence that Aspergillus fumigatus accelerates the decline of pulmonary function. (1→3)-β-D-glucan (BDG) and galactomannan (GM) are highly sensitive fungal biomarkers that are used to diagnose invasive fungal disease. However, their diagnostic value in CF patients is largely unknown. Methods We conducted a retrospective cohort study on 104 CF patients to determine whether serum BDG and GM levels correlate with parameters such as Aspergillus-positive sputum cultures and lung function. Results Aspergillus fumigatus was persistently detected in 22 of the 104 CF patients (21%). Mean serum BDG and GM levels in the Aspergillus-positive patients were significantly higher than in those without persistent Aspergillus detection (89 versus 40 pg/ml [p = 0.022] and 0.30 versus 0.15 ODI [p = 0.013], respectively). 27 and 7 patients had elevated BDG (≥ 60 pg/ml) or GM levels (> 0.5 ODI), respectivly. BDG and GM levels showed a significant correlation (p = 0.004). Patients with increased serum concentrations of BDG were more frequently Aspergillus-positive (40.7 versus 14.3%, p = 0.004) and had a significantly lower forced expiratory volume in one second (FEV1) than patients with a normal BDG (61.6 versus 77.1%, p = 0.007). In the multivariate analysis, BDG but not GM or the growth of A. fumigatus, proved to be an independent predictor for the FEV1. Conclusions CF patients with persistent Aspergillus detection have elevated BDG and GM levels which ranged between healthy and invasively infected patients. Serum BDG may be superior to GM and fungal culture in predicting an impaired lung function in CF patients.
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Affiliation(s)
- Johannes Träger
- Mikrobiologisches Institut - Klinische Mikrobiologie, Immunologie und Hygiene, Universitätsklinikum Erlangen und Friedrich-Alexander-Universität (FAU) Erlangen-Nürnberg, Wasserturmstr. 3/5, 91054, Erlangen, Germany
| | - Volker Otto Melichar
- Kinder- und Jugendklinik, Universitätsklinikum Erlangen und Friedrich-Alexander-Universität (FAU) Erlangen-Nürnberg, Erlangen, Germany
| | - Renate Meyer
- Mikrobiologisches Institut - Klinische Mikrobiologie, Immunologie und Hygiene, Universitätsklinikum Erlangen und Friedrich-Alexander-Universität (FAU) Erlangen-Nürnberg, Wasserturmstr. 3/5, 91054, Erlangen, Germany
| | - Manfred Rauh
- Kinder- und Jugendklinik, Universitätsklinikum Erlangen und Friedrich-Alexander-Universität (FAU) Erlangen-Nürnberg, Erlangen, Germany
| | - Christian Bogdan
- Mikrobiologisches Institut - Klinische Mikrobiologie, Immunologie und Hygiene, Universitätsklinikum Erlangen und Friedrich-Alexander-Universität (FAU) Erlangen-Nürnberg, Wasserturmstr. 3/5, 91054, Erlangen, Germany
| | - Jürgen Held
- Mikrobiologisches Institut - Klinische Mikrobiologie, Immunologie und Hygiene, Universitätsklinikum Erlangen und Friedrich-Alexander-Universität (FAU) Erlangen-Nürnberg, Wasserturmstr. 3/5, 91054, Erlangen, Germany.
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Affiliation(s)
- H. Frei
- Laboratory for Physical Chemistry, Swiss Federal Institute of Technology , Universitätstrasse 22, CH-8006, Zurich, Switzerland
| | - R. Meyer
- Laboratory for Physical Chemistry, Swiss Federal Institute of Technology , Universitätstrasse 22, CH-8006, Zurich, Switzerland
| | - A. Bauder
- Laboratory for Physical Chemistry, Swiss Federal Institute of Technology , Universitätstrasse 22, CH-8006, Zurich, Switzerland
| | - Hs. Günthard
- Laboratory for Physical Chemistry, Swiss Federal Institute of Technology , Universitätstrasse 22, CH-8006, Zurich, Switzerland
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