1
|
Fraemke D, Willems YE, Okbay A, Wagner G, Tucker-Drob EM, Harden KP, Hertwig R, Koellinger P, Raffington L. Differences in polygenic associations with educational attainment between West and East Germany before and after reunification. bioRxiv 2024:2024.03.21.585839. [PMID: 38585898 PMCID: PMC10996480 DOI: 10.1101/2024.03.21.585839] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/09/2024]
Abstract
Here we examine geographical and historical differences in polygenic associations with educational attainment in East and West Germany around reunification. We test this in n = 1902 25-85-year-olds from the German SOEP-G[ene] cohort. We leverage a DNA-based measure of genetic influence, a polygenic index calculated based on a previous genome-wide association study of educational attainment in individuals living in democratic countries. We find that polygenic associations with educational attainment were significantly stronger among East, but not West, Germans after but not before reunification. Negative control analyses of a polygenic index of height with educational attainment and height indicate that this gene-by-environemt interaction is specific to the educational domain. These findings suggest that the shift from an East German state-socialist to a free-market West German system increased the importance of genetic variants previously identified as important for education.
Collapse
Affiliation(s)
- D Fraemke
- Max Planck Research Group Biosocial - Biology, Social Disparities, and Development; Max Planck Institute for Human Development; Lentzeallee 94, 14195 Berlin, Germany
| | - Y E Willems
- Max Planck Research Group Biosocial - Biology, Social Disparities, and Development; Max Planck Institute for Human Development; Lentzeallee 94, 14195 Berlin, Germany
| | - A Okbay
- School of Business and Economics, Economics Fellow, Tinbergen Institute, Amsterdam
- Amsterdam Neuroscience, Complex Trait Genetics, Vrije Universiteit Amsterdam, Amsterdam
- Department of Economics, School of Business and Economics, Vrije Universiteit Amsterdam, Amsterdam
| | - G Wagner
- Max Planck Institute for Human Development, Berlin
| | - E M Tucker-Drob
- Department of Psychology, The University of Texas, Austin
- Population Research Center, The University of Texas, Austin
| | - K P Harden
- Department of Psychology, The University of Texas, Austin
- Population Research Center, The University of Texas, Austin
| | - R Hertwig
- Max Planck Institute for Human Development, Berlin
| | - P Koellinger
- School of Business and Economics, Economics Fellow, Tinbergen Institute, Amsterdam
- Amsterdam Neuroscience, Complex Trait Genetics, Vrije Universiteit Amsterdam, Amsterdam
- Department of Economics, School of Business and Economics, Vrije Universiteit Amsterdam, Amsterdam
| | - L Raffington
- Max Planck Research Group Biosocial - Biology, Social Disparities, and Development; Max Planck Institute for Human Development; Lentzeallee 94, 14195 Berlin, Germany
| |
Collapse
|
2
|
Krug I, Linardon J, Greenwood C, Youssef G, Treasure J, Fernandez-Aranda F, Karwautz A, Wagner G, Collier D, Anderluh M, Tchanturia K, Ricca V, Sorbi S, Nacmias B, Bellodi L, Fuller-Tyszkiewicz M. A proof-of-concept study applying machine learning methods to putative risk factors for eating disorders: results from the multi-centre European project on healthy eating. Psychol Med 2023; 53:2913-2922. [PMID: 34842131 DOI: 10.1017/s003329172100489x] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
BACKGROUND Despite a wide range of proposed risk factors and theoretical models, prediction of eating disorder (ED) onset remains poor. This study undertook the first comparison of two machine learning (ML) approaches [penalised logistic regression (LASSO), and prediction rule ensembles (PREs)] to conventional logistic regression (LR) models to enhance prediction of ED onset and differential ED diagnoses from a range of putative risk factors. METHOD Data were part of a European Project and comprised 1402 participants, 642 ED patients [52% with anorexia nervosa (AN) and 40% with bulimia nervosa (BN)] and 760 controls. The Cross-Cultural Risk Factor Questionnaire, which assesses retrospectively a range of sociocultural and psychological ED risk factors occurring before the age of 12 years (46 predictors in total), was used. RESULTS All three statistical approaches had satisfactory model accuracy, with an average area under the curve (AUC) of 86% for predicting ED onset and 70% for predicting AN v. BN. Predictive performance was greatest for the two regression methods (LR and LASSO), although the PRE technique relied on fewer predictors with comparable accuracy. The individual risk factors differed depending on the outcome classification (EDs v. non-EDs and AN v. BN). CONCLUSIONS Even though the conventional LR performed comparably to the ML approaches in terms of predictive accuracy, the ML methods produced more parsimonious predictive models. ML approaches offer a viable way to modify screening practices for ED risk that balance accuracy against participant burden.
Collapse
Affiliation(s)
- I Krug
- Melbourne School of Psychological Sciences, The University of Melbourne, Melbourne, VIC, Australia
| | - J Linardon
- School of Psychology, Deakin University, Geelong, Australia
| | - C Greenwood
- Centre for Social and Early Emotional Development, Deakin University, Burwood, Australia
- Centre for Adolescent Health, Murdoch Children's Research Institute, Royal Children's Hospital, Melbourne, VIC, Australia
| | - G Youssef
- School of Psychology, Deakin University, Geelong, Australia
- Centre for Adolescent Health, Murdoch Children's Research Institute, Royal Children's Hospital, Melbourne, VIC, Australia
| | - J Treasure
- Department of Psychological Medicine, Institute of Psychiatry, Psychology & Neuroscience, King's College London, London, UK
| | - F Fernandez-Aranda
- Eating Disorders Unit, Department of Psychiatry, University Hospital of Bellvitge, Barcelona, Spain
- Consorcio CIBER, Fisiopatología de la Obesidad y Nutrición (CIBERObn), Instituto de Salud Carlos III (ISCIII), Madrid, Spain
- Department of Clinical Sciences, School of Medicine and Health Sciences, University of Barcelona, Barcelona, Spain
- Psychiatry and Mental Health Group, Neuroscience Program, Institut d'Investigació Biomèdica de Bellvitge-IDIBELL, L'Hospitalet de Llobregat, Spain
| | - A Karwautz
- Department of Child and Adolescent Psychiatry, Medical University of Vienna, Vienna, Austria
| | - G Wagner
- Department of Child and Adolescent Psychiatry, Medical University of Vienna, Vienna, Austria
| | - D Collier
- SGDP Centre, Institute of Psychiatry, Psychology & Neuroscience, King's College London, De Crespigny Park, Denmark Hill, London, UK
- Discovery Neuroscience Research, Eli Lilly and Company Ltd, Lilly Research Laboratories, Erl Wood Manor, Surrey, UK
| | - M Anderluh
- Department of Child Psychiatry, University Children's Hospital, University Medical Center Ljubljana, Ljubljana, Slovenia
| | - K Tchanturia
- Department of Psychological Medicine, Institute of Psychiatry, Psychology & Neuroscience, King's College London, London, UK
| | - V Ricca
- Department of Neuroscience, Psychology, Drug Research and Child Health, University of Florence, Florence, Italy
- IRCCS Fondazione Don Carlo Gnocchi, Florence, Italy
| | - S Sorbi
- Department of Neuroscience, Psychology, Drug Research and Child Health, University of Florence, Florence, Italy
- IRCCS Fondazione Don Carlo Gnocchi, Florence, Italy
| | - B Nacmias
- Department of Neuroscience, Psychology, Drug Research and Child Health, University of Florence, Florence, Italy
- IRCCS Fondazione Don Carlo Gnocchi, Florence, Italy
| | - L Bellodi
- Department of Neuropsychiatric Sciences, Fondazione Centro San Raffaele del Monte Tabor, Milan, Italy
| | - M Fuller-Tyszkiewicz
- School of Psychology, Deakin University, Geelong, Australia
- Centre for Social and Early Emotional Development, Deakin University, Burwood, Australia
| |
Collapse
|
3
|
Kastner U, Javaheripour N, Arand J, Schönherr D, Sobanski T, Fehler S, Walter M, Wagner G. Effects of the COVID-19 pandemic on suicide attempts in a rural region in Germany, a 5-year observational study. J Affect Disord 2022; 318:393-399. [PMID: 36113687 PMCID: PMC9472680 DOI: 10.1016/j.jad.2022.09.022] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/28/2022] [Revised: 08/05/2022] [Accepted: 09/11/2022] [Indexed: 10/26/2022]
Abstract
BACKGROUND The COVID-19 pandemic and public life restrictions may have a negative impact on people's mental health. Therefore, we analyzed whether this condition affected the occurrence of suicide attempts (SA) over 20 months during the pandemic period. METHODS We included patient records according to DSM-5 criteria for suicidal behavior disorders (n = 825) between Jan 1, 2017, and Dec 31, 2021. We applied interrupted time-series Poisson regression models to investigate the effect of the pandemic on SA occurrence, time trends, and seasonal patterns in the whole group of patients as well as stratified by age and gender. RESULTS There was no significant effect of the pandemic on the occurrence of SA in the overall group. However, we observed a significant impact of the pandemic on the seasonal pattern of SA, also the variance differed significantly (pre-pandemic mean ± variance: 13.33 ± 15.75, pandemic: mean ± variance: 13.86 ± 7.26), indicating less periodic variation in SA during the pandemic. Male patients and young adults mainly contributed to this overall effect. Subgroup analysis revealed a significant difference in SA trends during the pandemic in older adults (>55 years) compared with younger adults (18-35 years); SA numbers increased in older adults and decreased in younger adults as the pandemic progressed. LIMITATIONS A few patients may have received initial care in an emergency department after SA without being referred to psychiatry. CONCLUSIONS In general, the COVID-19 pandemic and related measures did not significantly affect the occurrence of SA but did significantly affect the dynamics. In addition, the pandemic appeared to affect suicidal behavior differently across age groups as it progressed. Particularly for the older adult group, negative long-term effects of the pandemic on suicidal behavior can be derived from the present results, indicating the need to strengthen suicide prevention for the elderly.
Collapse
Affiliation(s)
- U.W. Kastner
- Department of Psychiatry and Psychotherapy, Helios Fachkliniken Hildburghausen, Eisfelder Str.41, 98646 Hildburghausen, Germany,Correspondence to: U.W. Kastner, Helios Fachkliniken Hildburghausen, Eisfelder Str.41, 98646 Hildburghausen, Germany
| | - N. Javaheripour
- Department of Psychiatry and Psychotherapy, Jena University Hospital, Jena, Germany
| | - J. Arand
- Department of Psychiatry and Psychotherapy, Helios Fachkliniken Hildburghausen, Eisfelder Str.41, 98646 Hildburghausen, Germany
| | - D. Schönherr
- Department of Psychiatry and Psychotherapy, Helios Fachkliniken Hildburghausen, Eisfelder Str.41, 98646 Hildburghausen, Germany
| | - T. Sobanski
- Department of Psychiatry, Psychotherapy, and Psychosomatic Medicine, Thueringen-Kliniken GmbH, 07318 Saalfeld, Germany
| | - S.W. Fehler
- Department of Psychiatry and Psychotherapy, Helios Fachkliniken Hildburghausen, Eisfelder Str.41, 98646 Hildburghausen, Germany
| | - M. Walter
- Department of Psychiatry and Psychotherapy, Jena University Hospital, Jena, Germany
| | - G. Wagner
- Department of Psychiatry and Psychotherapy, Jena University Hospital, Jena, Germany,Correspondence to: G. Wagner, Department of Psychiatry and Psychotherapy, Jena University Hospital, Philosophenweg 3, 07743 Jena, Germany
| |
Collapse
|
4
|
Meyer S, Wagner G, Cepni A, Ledoux T, Walsh D, Johnston C, Arlinghaus K. Lunch Skipping Behaviors Among Black and Hispanic Adolescents Who Receive Free School Meals. J Acad Nutr Diet 2021. [DOI: 10.1016/j.jand.2021.08.089] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
|
5
|
Richter GM, Wagner G, Reichenmiller K, Staufenbiel I, Martins O, Löscher BS, Holtgrewe M, Jepsen S, Dommisch H, Schaefer AS. Exome Sequencing of 5 Families with Severe Early-Onset Periodontitis. J Dent Res 2021; 101:151-157. [PMID: 34515563 PMCID: PMC8807999 DOI: 10.1177/00220345211029266] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [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] [Indexed: 11/16/2022] Open
Abstract
Periodontitis is characterized by alveolar bone loss leading to tooth loss. A small proportion of patients develop severe periodontitis at the juvenile or adolescent age without exposure to the main risk factors of the disease. It is considered that these cases carry rare variants with large causal effects, but the specific variants are largely unknown. In this study, we performed exome sequencing of 5 families with children who developed stage IV, grade C, periodontitis between 3 and 18 y of age. In 1 family, we found compound heterozygous variants in the gene CTSC (p.R272H, p.G139R), 1 of which was previously identified in a family with prepubertal periodontitis. Subsequent targeted resequencing of the CTSC gene in 24 patients <25 y of age (stage IV, grade C) identified the known mutation p.I453V (odds ratio = 4.06, 95% CI = 1.6 to 10.3, P = 0.001), which was previously reported to increase the risk for adolescent periodontitis. An affected sibling of another family carried a homozygous deleterious mutation in the gene TUT7 (p.R560Q, CADD score >30 [Combined Annotation Dependent Depletion]), which is implicated in regulation of interleukin 6 expression. Two other affected siblings shared heterozygous deleterious mutations in the interacting genes PADI1 and FLG (both CADD = 36), which contribute to the integrity of the environment-tissue barrier interface. Additionally, we found predicted deleterious mutations in the periodontitis risk genes ABCA1, GLT6D1, and SIGLEC5. We conclude that the CTSC variants p.R272H and p.I453V have different expressivity and diagnostic relevance for prepubertal and adolescent periodontitis, respectively. We propose additional causal variants for early-onset periodontitis, which also locate within genes that carry known susceptibility variants for common forms. However, the genetic architecture of juvenile periodontitis is complex and differs among the affected siblings of the sequenced families.
Collapse
Affiliation(s)
- G M Richter
- Department of Periodontology and Synoptic Dentistry, Institute for Dental and Craniofacial Sciences, Charité-University Medicine Berlin, Berlin, Germany
| | - G Wagner
- Department of Periodontology, Operative and Preventive Dentistry, University of Bonn, Bonn, Germany
| | | | - I Staufenbiel
- Department of Conservative Dentistry, Periodontology and Preventive Dentistry, Hannover Medical School, Hannover, Germany
| | - O Martins
- Institute of Periodontology, Department of Dentistry, Faculty of Medicine, University of Coimbra, Coimbra, Portugal
| | - B S Löscher
- Institute of Clinical Molecular Biology, Christian-Albrechts-University Kiel and University Hospital Schleswig-Holstein, Kiel, Germany
| | - M Holtgrewe
- Core Unit Bioinformatics-CUBI, Berlin Institute of Health, Charité-University Medicine Berlin, Berlin, Germany
| | - S Jepsen
- Department of Periodontology, Operative and Preventive Dentistry, University of Bonn, Bonn, Germany
| | - H Dommisch
- Department of Periodontology and Synoptic Dentistry, Institute for Dental and Craniofacial Sciences, Charité-University Medicine Berlin, Berlin, Germany
| | - A S Schaefer
- Department of Periodontology and Synoptic Dentistry, Institute for Dental and Craniofacial Sciences, Charité-University Medicine Berlin, Berlin, Germany
| |
Collapse
|
6
|
Dobrescu AI, Nussbaumer-Streit B, Klerings I, Wagner G, Persad E, Sommer I, Herkner H, Gartlehner G. Restricting evidence syntheses of interventions to English-language publications is a viable methodological shortcut for most medical topics: a systematic review. J Clin Epidemiol 2021; 137:209-217. [PMID: 33933579 DOI: 10.1016/j.jclinepi.2021.04.012] [Citation(s) in RCA: 55] [Impact Index Per Article: 18.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2021] [Revised: 04/12/2021] [Accepted: 04/20/2021] [Indexed: 12/20/2022]
Abstract
OBJECTIVES To assess the impact of restricting systematic reviews of conventional or alternative medical treatments or diagnostic tests to English-language publications. STUDY DESIGN AND SETTING We systematically searched MEDLINE (Ovid), the Science Citation Index Expanded (Web of Science), and Current Contents Connect (Web of Science) up to April 24, 2020. Eligible methods studies assessed the impact of restricting systematic reviews to English-language publications on effect estimates and conclusions. Two reviewers independently screened the literature; one investigator performed the data extraction, a second investigator checked for completeness and accuracy. We synthesized the findings narratively. RESULTS Eight methods studies (10 publications) met the inclusion criteria; none addressed language restrictions in diagnostic test accuracy reviews. The included studies analyzed nine to 147 meta-analyses and/or systematic reviews. The proportions of non-English-language publications ranged from 2% to 100%. Based on five methods studies, restricting literature searches or inclusion criteria to English-language publications led to a change in statistical significance in 23/259 meta-analyses (9%). Most commonly, the statistical significance was lost, but had no impact on the conclusions of systematic reviews. CONCLUSION Restricting systematic reviews to English-language publications appears to have little impact on the effect estimates and conclusions of systematic reviews.
Collapse
Affiliation(s)
- A I Dobrescu
- Cochrane Austria, Danube University Krems, Krems a.d. Donau, Austria.
| | | | - I Klerings
- Cochrane Austria, Danube University Krems, Krems a.d. Donau, Austria
| | - G Wagner
- Cochrane Austria, Danube University Krems, Krems a.d. Donau, Austria
| | - E Persad
- Cochrane Austria, Danube University Krems, Krems a.d. Donau, Austria
| | - I Sommer
- Cochrane Austria, Danube University Krems, Krems a.d. Donau, Austria
| | - H Herkner
- Department of Emergency Medicine, Medical University of Vienna, Austria
| | - G Gartlehner
- Cochrane Austria, Danube University Krems, Krems a.d. Donau, Austria; RTI International, Research Triangle Park, NC, USA
| |
Collapse
|
7
|
Pinto AO, Carvalho D, Frizzo C, Lopes K, Tessari GB, Catecati T, Dhom-Lemos LC, Pasquali AKS, Quaresma PF, Stoco PH, Grisard EC, Steindel M, Wagner G. First case of canine visceral leishmaniasis in the midwestern of Santa Catarina State, Brazil. BRAZ J BIOL 2021; 82:e241162. [PMID: 34133561 DOI: 10.1590/1519-6984.241162] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2020] [Accepted: 11/28/2020] [Indexed: 11/22/2022] Open
Abstract
Canine visceral leishmaniasis (CVL) caused by Leishmania (Leishmania) infantum is transmitted by phlebotomine sandflies and a major zoonotic disease in Brazil. Due to the southward expansion of the disease within the country and the central role of dogs as urban reservoirs of the parasite, we have investigated the occurrence of CVL in two municipalities Erval Velho and Herval d'Oeste in the Midwest region of Santa Catarina state. Peripheral blood samples from 126 dogs were collected in both cities and tested for anti-L. infantum antibodies by indirect enzyme-linked immunosorbent assay (ELISA) and indirect immunofluorescence reaction (IIF) and for the presence of parasite DNA by polymerase chain reaction (PCR) in peripheral blood. From examined dogs, 35.71% (45/126) were positive for at least one of the three tests and two (1.6%) were positive in all performed tests. Twelve dogs (9.5%) were positive for both ELISA and IIF, while 21 dogs were exclusively positive for ELISA (16.7%), and 15 (11.9%) for IIF. L. infantum k-DNA was detected by PCR in 9 out of 126 dogs (7.1%) and clinical symptoms compatible with CVL were observed for 6 dogs. Taken together, these results indicate the transmission of CVL in this region, highlighting the needs for epidemiological surveillance and implementation of control measures for CVL transmission in this region.
Collapse
Affiliation(s)
- A O Pinto
- Programa de Mestrado em Biociências e Saúde, Universidade do Oeste de Santa Catarina - UNOESC, Joaçaba, SC, Brasil.,Curso de Graduação em Medicina Veterinária, Universidade do Oeste de Santa Catarina - UNOESC, Campos Novos, SC, Brasil
| | - D Carvalho
- Programa de Mestrado em Biociências e Saúde, Universidade do Oeste de Santa Catarina - UNOESC, Joaçaba, SC, Brasil
| | - C Frizzo
- Programa de Mestrado em Biociências e Saúde, Universidade do Oeste de Santa Catarina - UNOESC, Joaçaba, SC, Brasil
| | - K Lopes
- Programa de Mestrado em Biociências e Saúde, Universidade do Oeste de Santa Catarina - UNOESC, Joaçaba, SC, Brasil
| | - G B Tessari
- Curso de Graduação em Medicina Veterinária, Universidade do Oeste de Santa Catarina - UNOESC, Campos Novos, SC, Brasil
| | - T Catecati
- Laboratório de Protozoologia, Universidade do Federal de Santa Catarina - UFSC, Florianópolis, SC, Brasil
| | - L C Dhom-Lemos
- Laboratório de Protozoologia, Universidade do Federal de Santa Catarina - UFSC, Florianópolis, SC, Brasil
| | - A K S Pasquali
- Curso de Graduação em Medicina Veterinária, Universidade do Oeste de Santa Catarina - UNOESC, Campos Novos, SC, Brasil
| | - P F Quaresma
- Laboratório de Protozoologia, Universidade do Federal de Santa Catarina - UFSC, Florianópolis, SC, Brasil
| | - P H Stoco
- Laboratório de Protozoologia, Universidade do Federal de Santa Catarina - UFSC, Florianópolis, SC, Brasil
| | - E C Grisard
- Laboratório de Protozoologia, Universidade do Federal de Santa Catarina - UFSC, Florianópolis, SC, Brasil
| | - M Steindel
- Laboratório de Protozoologia, Universidade do Federal de Santa Catarina - UFSC, Florianópolis, SC, Brasil
| | - G Wagner
- Programa de Mestrado em Biociências e Saúde, Universidade do Oeste de Santa Catarina - UNOESC, Joaçaba, SC, Brasil.,Laboratório de Protozoologia, Universidade do Federal de Santa Catarina - UFSC, Florianópolis, SC, Brasil
| |
Collapse
|
8
|
Awayes J, Reinkensmeier I, Wagner G, Hausner S. Nanojoining with Ni Nanoparticles for Turbine Applications. J Mater Eng Perform 2021; 30:3178-3186. [PMID: 34075290 PMCID: PMC8153100 DOI: 10.1007/s11665-021-05813-1] [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] [Figures] [Subscribe] [Scholar Register] [Received: 11/18/2020] [Revised: 03/24/2021] [Accepted: 04/18/2021] [Indexed: 06/12/2023]
Abstract
Thermal joining can lead to high thermal stresses, undesired structural changes, and the associated loss of properties. In the turbine industry, monocrystalline materials are often used to take advantage of their high creep resistance and heat resistance. For process-related reasons, components are mechanically machined, and the contours usually have slightly work-hardened areas due to the mechanical processing. Downstream thermal processes at temperatures above 1100 °C can lead to recrystallization (Rx) at these areas, so that the properties are negatively affected. Usually, the joining temperatures for high-temperature brazing are in the range of 1200 °C, both in new installations and in the case of repairs. It is therefore desirable to reduce the joining temperature without changing the choice of filler material, which can lead to susceptibility to corrosion and oxidation. According to investigations of the last years, nanojoining with nanoparticles offers great potential. The joining temperature can be lowered due to the "surface effect." A considerable reduction in the size of the particles leads to a significant increase in surface atoms and thus in the specific surface area. The connection of the materials occurs predominantly due to sintering processes. After the joining process, the properties of a bulk material are available again. Mechanical properties comparable to those of brazing have already been achieved with silver nanoparticles (Hausner in WWA 56, 2015). Up to now, publications on the topic of nanojoining have largely referred to silver nanoparticles/silver sintering. Due to the temperature application range, silver filler material cannot be used in gas turbines. Therefore, the first results of nickel nanoparticles for joining of the nickel-based superalloy PWA 1483 using induction heating are described in this paper. During joining, the parameters brazing temperature, holding time and the surface treatment of the base materials were varied. It becomes clear that the microstructure of the joint is dependent on temperature and holding time. Moreover, if the temperature is too low and holding time too short, only insufficiently sintering occurs, which leads to sample failure during the metallographic preparation. On the other hand, samples with a tensile shear strength of up to 165 MPa can be achieved with convenient joining conditions.
Collapse
Affiliation(s)
- J. Awayes
- Siemens Energy GmbH and Co. KG, Huttenstraße 12, 10553 Berlin, Germany
| | - I. Reinkensmeier
- Siemens Energy GmbH and Co. KG, Huttenstraße 12, 10553 Berlin, Germany
| | - G. Wagner
- Technische Universität Chemnitz, Erfenschlager Straße 73, 09125 Chemnitz, Germany
| | - S. Hausner
- Technische Universität Chemnitz, Erfenschlager Straße 73, 09125 Chemnitz, Germany
| |
Collapse
|
9
|
Shetty A, Janda M, Fry K, Brown S, Yau B, Schuckmann LV, Thomas S, Rayner JE, Spelman L, Wagner G, Jenkins H, Lun K, Parbery J, Soyer HP, Neale RE, Green AC, Whiteman DC, Olsen CM, Khosrotehrani K. Clinical utility of skin cancer and melanoma risk scores for population screening: TRoPICS study. J Eur Acad Dermatol Venereol 2020; 35:1094-1098. [PMID: 33274462 DOI: 10.1111/jdv.17062] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2020] [Accepted: 10/27/2020] [Indexed: 01/04/2023]
Abstract
BACKGROUND Screening for skin cancer can be cost-effective if focused on high-risk groups. Risk prediction tools have been developed for keratinocyte cancers and melanoma to optimize advice and management. However, few have been validated in a clinical setting over the past few years. OBJECTIVES To assess the clinical utility of risk assessment tools to identify individuals with prevalent skin cancers in a volunteer-based screening clinic. METHODS Participants were adults presenting for a skin check at a volunteer-based skin cancer screening facility. We used previously published tools, based on questionnaire responses, to predict melanoma and keratinocyte cancers [KCs; basal cell carcinoma (BCC) and squamous cell carcinoma (SCC)] and classified each participant into one of five risk categories. Participants subsequently underwent a full skin examination by a dermatologist. All suspicious lesions were biopsied, and all cancers were histopathologically confirmed. RESULTS Of 789 people who presented to the clinic, 507 (64%) consented to the study. Twenty-two BCCs, 19 SCCs and eight melanomas were diagnosed. The proportion of keratinocyte cancers diagnosed increased according to risk category from <1% in the lowest to 24% in the highest risk category (P < 0.001). Subtype analysis revealed similar proportionate increases in BCC or SCC prevalence according to risk category. However, a similar proportion of melanoma cases were detected in the low-risk and high-risk groups. CONCLUSION The risk prediction model for keratinocyte cancers can reliably identify individuals with a significant skin cancer burden prior to a skin examination in the community setting. The prediction tool for melanoma needs to be tested in a larger sample exposed to a wider range of environmental risk factors.
Collapse
Affiliation(s)
- A Shetty
- UQ Diamantina Institute, The University of Queensland, Brisbane, QLD, Australia
| | - M Janda
- Centre of Health Services Research, The University of Queensland, Brisbane, QLD, Australia
| | - K Fry
- UQ Diamantina Institute, The University of Queensland, Brisbane, QLD, Australia
| | - S Brown
- UQ Diamantina Institute, The University of Queensland, Brisbane, QLD, Australia
| | - B Yau
- Queensland Institute of Dermatology, Queensland Skin and Cancer Foundation, Brisbane, QLD, Australia
| | - L Von Schuckmann
- UQ Diamantina Institute, The University of Queensland, Brisbane, QLD, Australia.,Queensland Institute of Dermatology, Queensland Skin and Cancer Foundation, Brisbane, QLD, Australia
| | - S Thomas
- Queensland Institute of Dermatology, Queensland Skin and Cancer Foundation, Brisbane, QLD, Australia
| | - J E Rayner
- UQ Diamantina Institute, The University of Queensland, Brisbane, QLD, Australia.,Queensland Institute of Dermatology, Queensland Skin and Cancer Foundation, Brisbane, QLD, Australia
| | - L Spelman
- Queensland Institute of Dermatology, Queensland Skin and Cancer Foundation, Brisbane, QLD, Australia
| | - G Wagner
- Queensland Institute of Dermatology, Queensland Skin and Cancer Foundation, Brisbane, QLD, Australia
| | - H Jenkins
- Queensland Institute of Dermatology, Queensland Skin and Cancer Foundation, Brisbane, QLD, Australia
| | - K Lun
- Queensland Institute of Dermatology, Queensland Skin and Cancer Foundation, Brisbane, QLD, Australia
| | - J Parbery
- Queensland Institute of Dermatology, Queensland Skin and Cancer Foundation, Brisbane, QLD, Australia
| | - H P Soyer
- UQ Diamantina Institute, The University of Queensland, Brisbane, QLD, Australia
| | - R E Neale
- QIMR Berghofer Medical Research Institute, Brisbane, QLD, Australia
| | - A C Green
- QIMR Berghofer Medical Research Institute, Brisbane, QLD, Australia
| | - D C Whiteman
- QIMR Berghofer Medical Research Institute, Brisbane, QLD, Australia
| | - C M Olsen
- UQ Diamantina Institute, The University of Queensland, Brisbane, QLD, Australia.,QIMR Berghofer Medical Research Institute, Brisbane, QLD, Australia
| | - K Khosrotehrani
- UQ Diamantina Institute, The University of Queensland, Brisbane, QLD, Australia
| |
Collapse
|
10
|
Wagner G, Jindrich C, Hughes A, Daniels E, Hanson J. An Evaluation of the Macronutrient Impact of Plant-based Milks in Childcare Menus. J Acad Nutr Diet 2020. [DOI: 10.1016/j.jand.2020.06.127] [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: 11/27/2022]
|
11
|
Steuer NB, Hugenroth K, Beck T, Spillner J, Kopp R, Reinartz S, Schmitz-Rode T, Steinseifer U, Wagner G, Arens J. Long-Term Venovenous Connection for Extracorporeal Carbon Dioxide Removal (ECCO 2R)-Numerical Investigation of the Connection to the Common Iliac Veins. Cardiovasc Eng Technol 2020; 11:362-380. [PMID: 32405926 PMCID: PMC7385029 DOI: 10.1007/s13239-020-00466-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/18/2019] [Accepted: 05/02/2020] [Indexed: 02/06/2023]
Abstract
Purpose Currently used cannulae for extracorporeal carbon dioxide removal (ECCO2R) are associated with complications such as thrombosis and distal limb ischemia, especially for long-term use. We hypothesize that the risk of these complications is reducible by attaching hemodynamically optimized grafts to the patient’s vessels. In this study, as a first step towards a long-term stable ECCO2R connection, we investigated the feasibility of a venovenous connection to the common iliac veins. To ensure its applicability, the drainage of reinfused blood (recirculation) and high wall shear stress (WSS) must be avoided. Methods A reference model was selected for computational fluid dynamics, on the basis of the analysis of imaging data. Initially, a sensitivity analysis regarding recirculation was conducted using as variables: blood flow, the distance of drainage and return to the iliocaval junction, as well as the diameter and position of the grafts. Subsequently, the connection was optimized regarding recirculation and the WSS was evaluated. We validated the simulations in a silicone model traversed by dyed fluid. Results The simulations were in good agreement with the validation measurements (mean deviation 1.64%). The recirculation ranged from 32.1 to 0%. The maximum WSS did not exceed 5.57 Pa. The position and diameter of the return graft show the highest influence on recirculation. A correlation was ascertained between recirculation and WSS. Overall, an inflow jet directed at a vessel wall entails not only high WSS, but also a flow separation and thereby an increased recirculation. Therefore, return grafts aligned to the vena cava are crucial. Conclusion In conclusion, a connection without recirculation could be feasible and therefore provides a promising option for a long-term ECCO2R connection.
Collapse
Affiliation(s)
- N B Steuer
- Department of Cardiovascular Engineering, Institute of Applied Medical Engineering, Medical Faculty, RWTH Aachen University, Aachen, Germany.
| | - K Hugenroth
- Department of Cardiovascular Engineering, Institute of Applied Medical Engineering, Medical Faculty, RWTH Aachen University, Aachen, Germany
| | - T Beck
- Department of Cardiovascular Engineering, Institute of Applied Medical Engineering, Medical Faculty, RWTH Aachen University, Aachen, Germany
| | - J Spillner
- Clinic for Cardiothoracic Surgery, University Hospital RWTH Aachen, Aachen, Germany
| | - R Kopp
- Department of Anesthesiology, University Hospital RWTH Aachen, Aachen, Germany
| | - S Reinartz
- Department of Radiology, University Hospital RWTH Aachen, Aachen, Germany
| | - T Schmitz-Rode
- Institute of Applied Medical Engineering, Medical Faculty, RWTH Aachen University, Aachen, Germany
| | - U Steinseifer
- Department of Cardiovascular Engineering, Institute of Applied Medical Engineering, Medical Faculty, RWTH Aachen University, Aachen, Germany
| | - G Wagner
- Department of Cardiovascular Engineering, Institute of Applied Medical Engineering, Medical Faculty, RWTH Aachen University, Aachen, Germany
| | - J Arens
- Department of Cardiovascular Engineering, Institute of Applied Medical Engineering, Medical Faculty, RWTH Aachen University, Aachen, Germany.,Chair in Engineering Organ Support Technologies, Department of Biomechanical Engineering, Faculty of Engineering Technologies, University of Twente, Enschede, The Netherlands
| |
Collapse
|
12
|
Nussbaumer-Streit B, Mayr V, Dobrescu AI, Chapman A, Persad E, Klerings I, Zarachiah C, Wagner G, Siebert U, Christof C, Gartlehner G. The Effectiveness of Quarantine alone or in Combination with Other Public Health Measures to Control Coronavirus Disease 2019: a Rapid Review. CDSR 2020. [DOI: 10.1002/14651858.cd202001] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
|
13
|
Abstract
A 16-year-old female developed a satellite-like recurrence of a pyogenic granuloma on her thorax 2 weeks after complete excision. Treatment with a pulsed dye laser led to a complete resolution. BRAF and RAS mutations detected in the pyogenic granuloma are considered major driver mutations. Whether these findings are also of importance for the etiopathogenesis of satellitosis is unknown. In our patient, no BRAF or NRAS mutation could be detected.
Collapse
Affiliation(s)
- G Wagner
- Klinik für Dermatologie, Allergologie und Phlebologie, Klinikum Bremerhaven Reinkenheide, Postbrookstr. 103, 27574, Bremerhaven, Deutschland.
| | - R Abbenseth
- Klinik für Dermatologie, Allergologie und Phlebologie, Klinikum Bremerhaven Reinkenheide, Postbrookstr. 103, 27574, Bremerhaven, Deutschland
| | - M Heine
- Pathologisches Institut Bremerhaven, Bremerhaven, Deutschland
| | - C Rose
- Dermatopathologie Lübeck, Lübeck, Deutschland
| | - M M Sachse
- Klinik für Dermatologie, Allergologie und Phlebologie, Klinikum Bremerhaven Reinkenheide, Postbrookstr. 103, 27574, Bremerhaven, Deutschland
| |
Collapse
|
14
|
VanLandingham H, Alasantro L, Wagner G, Rosen J. A-51 A Novel Memory Catastrophizing Scale. Arch Clin Neuropsychol 2019. [DOI: 10.1093/arclin/acz034.51] [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] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Objective
A weak relationship exists between subjective memory complaints and performance on objective measures of learning and memory. A memory catastrophizing scale may explain this relationship. Our objective is to preliminarily explore a scale which assesses catastrophizing.
Method
The sample consisted of 46 patients (21 normal profiles, 25 mild cognitive impairment; mean age 56.1 ± 15.4) in a community-based neurology clinic. Each patient completed a clinical interview and comprehensive neuropsychological battery. The California Verbal Learning Test II (CVLT-II) was used to assess memory; the Beck Depression Inventory and Beck Anxiety Inventory were used to assess depressive and anxiety symptoms; a novel Memory Catastrophizing Scale (MCS) was used to assess subjective memory.
Results
A reliability analysis revealed internal consistency throughout the MCS (Cronbach’s alpha = .958). A bivariate correlation revealed that memory catastrophizing was significantly positively correlated with depressive (r = 0.623, p < 0.01) and anxiety (r = 0.433, p < 0.01) symptomology. Bivariate correlations demonstrated significant positive correlations between subjective memory complaints and memory (CVLT-II SDFR r = 0.502, p < .05; SDCR r = 0.434, p = 0.05; LDCR r = 0.512, p < .05) only among NP patients. The mean MCS score was 26 (±17), with a median of 17, a skewness of 0.40 and kurtosis of -0.77.
Conclusion
Our results support past research suggesting that there is a weak relationship between subjective and objective memory performances. Catastrophizing as a concept may explain the relationship between mood and performance on testing, especially amongst individuals without a known neurological pathology seeking treatment at a community-based neurological clinic.
Collapse
|
15
|
Abstract
Thirteen years ago, a 48-year-old man developed numerous neurofibromas in a circumscribed area on the right chest. At the same time, a bilateral seminoma was diagnosed and treated curatively. There was no evidence for other complications of neurofibromatosis. The family history was inconspicuous. The segmental neurofibromatosis (SN) presented in this patient is the result of a mosaic formation resulting from a mutation of the NF1 gene, a tumor suppressor gene. Concomitant, typical diseases of neurofibromatosis generalisata (NFG), including malignant neoplasms, are the exception to SN.
Collapse
Affiliation(s)
- G Wagner
- Klinik für Dermatologie, Allergologie und Phlebologie, Klinikum Bremerhaven Reinkenheide, Postbrookstr. 103, 27574, Bremerhaven, Deutschland.
| | - V Meyer
- Klinik für Dermatologie, Allergologie und Phlebologie, Klinikum Bremerhaven Reinkenheide, Postbrookstr. 103, 27574, Bremerhaven, Deutschland
| | - M M Sachse
- Klinik für Dermatologie, Allergologie und Phlebologie, Klinikum Bremerhaven Reinkenheide, Postbrookstr. 103, 27574, Bremerhaven, Deutschland
| |
Collapse
|
16
|
Biesinger E, Dillinger J, Groth A, Heiden C, Olze H, Prechtl J, Schuss JU, Rasp G, Rieffert M, Wagner G, Weitzsäcker W. [Ear aid in Myanmar]. HNO 2019; 67:495-498. [PMID: 31165196 DOI: 10.1007/s00106-019-0689-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [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: 11/28/2022]
Abstract
As the example of a small team working in Myanmar since 2010 has demonstrated, it is possible to achieve sustainable success in medical education and training in foreign countries with relatively little effort, in this case in middle ear surgery. The main requirements are outstanding communication within the team as well as with the authorities, organizations, and colleagues on site. Equally important is mindful and respectful work in the hosting country and the consideration of cultural particularities. Essential contributing factors for long-term success are intercultural exchange, interpersonal relationships, and especially the motivation of colleagues on site, which together create a foundation of trust. This trust combined with regular exchange visits enables constant professional development according to the current needs.
Collapse
Affiliation(s)
- E Biesinger
- HNO-Zentrum Traunstein, Maxplatz 5, 83278, Traunstein, Deutschland.
| | - J Dillinger
- Augenarztpraxis Dres. Dillinger, Traunstein, Deutschland
| | - A Groth
- Abteilung für Hals‑, Nasen- und Ohrenheilkunde, Bezirkskrankenhaus Kufstein, Kufstein, Österreich
| | - C Heiden
- HNO-Zentrum Traunstein, Maxplatz 5, 83278, Traunstein, Deutschland
| | - H Olze
- Klinik für Hals‑, Nasen- und Ohrenheilkunde, Charité - Universitätsmedizin Berlin, Berlin, Deutschland
| | - J Prechtl
- Prechtl Engineering, Traunstein, Deutschland
| | - J U Schuss
- Emeritus HNO-Klinik im Katharinenhospital, Klinikum Stuttgart, Stuttgart, Deutschland
| | - G Rasp
- Universitätsklinik für Hals-Nasen-Ohren-Krankheiten, Landeskrankenhaus, Uniklinikum Salzburg, Salzburg, Österreich
| | - M Rieffert
- Anästhetische Praxis, München, Deutschland
| | | | | |
Collapse
|
17
|
Holguin G, Wagner G, Slonim T, Haase-Alasantro L, Rosen J. B - 72Health and Disability Differences Among Patients with Amnestic and Non-Amnestic Mild Cognitive Impairment. Arch Clin Neuropsychol 2018. [DOI: 10.1093/arclin/acy061.148] [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: 11/14/2022] Open
|
18
|
Langbein K, Hesse J, Gussew A, Milleit B, Lavoie S, Amminger GP, Gaser C, Wagner G, Reichenbach JR, Hipler UC, Winter D, Smesny S. Disturbed glutathione antioxidative defense is associated with structural brain changes in neuroleptic-naïve first-episode psychosis patients. Prostaglandins Leukot Essent Fatty Acids 2018; 136:103-110. [PMID: 29111383 DOI: 10.1016/j.plefa.2017.10.005] [Citation(s) in RCA: 17] [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: 11/09/2016] [Revised: 09/30/2017] [Accepted: 10/16/2017] [Indexed: 12/31/2022]
Abstract
BACKGROUND Oxidative stress and impaired antioxidant defense are reported in schizophrenia and are thought to be associated with disturbed neurodevelopment, brain structural alterations, glutamatergic imbalance, negative symptomatology, and cognitive impairment. To test some of these assumptions we investigated the glutathione (GSH) antioxidant defense system (AODS) and brain structural abnormalities in drug-naïve individuals with first acute episode of psychosis (FEP). METHOD The study involved 27 drug-naïve FEP patients and 31 healthy controls (HC). GSH AODS markers and TBARS (thiobarbituric acid reactive substances) were measured in blood plasma and erythrocytes. High-resolution T1-weighted 3T MRI were acquired from all subjects. To investigate brain structural abnormalities and effects of illness on interactions between GSH metabolites or enzyme activities and local grey matter density, voxel-based morphometry (VBM) with the computational anatomy toolbox (CAT12) was used. Symptomatology was assessed using the Positive and Negative Syndrome Scale (PANSS) and the Symptom Checklist 1990 revised (SCL-90-R). RESULTS (i) In FEP patients, glutathione reductase activity (GSR) was lower than in the HC group. GSR activity in plasma was inversely correlated with SCL-90-R scores of depression and PANSS scores of the negative symptom subscale. (ii) A reduction of GM was observed in left inferior frontal, bilateral temporal, as well as parietal cortices of FEP patients. (iii) Interaction analyses revealed an influence of illness on GSR/GM associations in the left orbitofrontal cortex (BA 47). CONCLUSION Our findings support the notion of altered GSH antioxidative defense in untreated acute psychosis as a potential pathomechanism for localized brain structural abnormalities. This pathology relates to a key brain region of social cognition, affective motivation control and decision making, and is clinically accompanied by depressive and negative symptoms.
Collapse
Affiliation(s)
- K Langbein
- Department of Psychiatry and Psychotherapy, Jena University Hospital, Jena, Germany.
| | - J Hesse
- Department of Dermatology, University Hospital Jena, Jena, Germany
| | - A Gussew
- Medical Physics Group, Institute of Diagnostic and Interventional Radiology, Jena University Hospital, Jena, Germany
| | - B Milleit
- Department of Psychiatry and Psychotherapy, Jena University Hospital, Jena, Germany; Department of Dermatology, University Hospital Jena, Jena, Germany
| | - S Lavoie
- Orygen, the National Centre of Excellence in Youth Mental Health, Parkville, Australia; Centre for Youth Mental Health, The University of Melbourne, Parkville, Australia
| | - G P Amminger
- Orygen, the National Centre of Excellence in Youth Mental Health, Parkville, Australia; Centre for Youth Mental Health, The University of Melbourne, Parkville, Australia
| | - C Gaser
- Department of Psychiatry and Psychotherapy, Jena University Hospital, Jena, Germany; Department of Neurology, Jena University Hospital, Jena, Germany
| | - G Wagner
- Department of Psychiatry and Psychotherapy, Jena University Hospital, Jena, Germany
| | - J R Reichenbach
- Medical Physics Group, Institute of Diagnostic and Interventional Radiology, Jena University Hospital, Jena, Germany
| | - U-C Hipler
- Department of Dermatology, University Hospital Jena, Jena, Germany
| | - D Winter
- Department of Dermatology, University Hospital Jena, Jena, Germany
| | - S Smesny
- Department of Psychiatry and Psychotherapy, Jena University Hospital, Jena, Germany
| |
Collapse
|
19
|
Abstract
SummaryUrokinase was purified by affinity chromatography using 6-amino-naphthamidine-(2), a new specific ligand based on the urokinase inhibitor β-naphthamidine. Urokinase was firmly bound at pH 7.0 and could be eluted at pH 3.0. The protein which passed the column at pH 7.0 without being bound did not contain any urokinase activity. This is an important property because it can be utilized for raising a monospecific urokinase antiserum by absorbing unspecific antibodies with only a minor loss of antiserum titre.
Collapse
Affiliation(s)
- B Åstedt
- The Research Laboratories of the Departments of Gynecology & Obstetrics and Pediatrics, University of Lund, Malmö Allmänna Sjukhus, 21401 Malmö, Sweden, the Section of Biosciences, Karl-Marx-University of Leipzig, GDR, and the Research Laboratories of Lowens Pharmaceuticals, Denmark
| | - L Holmberg
- The Research Laboratories of the Departments of Gynecology & Obstetrics and Pediatrics, University of Lund, Malmö Allmänna Sjukhus, 21401 Malmö, Sweden, the Section of Biosciences, Karl-Marx-University of Leipzig, GDR, and the Research Laboratories of Lowens Pharmaceuticals, Denmark
| | - G Wagner
- The Research Laboratories of the Departments of Gynecology & Obstetrics and Pediatrics, University of Lund, Malmö Allmänna Sjukhus, 21401 Malmö, Sweden, the Section of Biosciences, Karl-Marx-University of Leipzig, GDR, and the Research Laboratories of Lowens Pharmaceuticals, Denmark
| | - P Richter
- The Research Laboratories of the Departments of Gynecology & Obstetrics and Pediatrics, University of Lund, Malmö Allmänna Sjukhus, 21401 Malmö, Sweden, the Section of Biosciences, Karl-Marx-University of Leipzig, GDR, and the Research Laboratories of Lowens Pharmaceuticals, Denmark
| | - J Ploug
- The Research Laboratories of the Departments of Gynecology & Obstetrics and Pediatrics, University of Lund, Malmö Allmänna Sjukhus, 21401 Malmö, Sweden, the Section of Biosciences, Karl-Marx-University of Leipzig, GDR, and the Research Laboratories of Lowens Pharmaceuticals, Denmark
| |
Collapse
|
20
|
Jäckel D, Schlothauer NI, Zeeb H, Wagner G, Sachse MM. [Skin cancer screening and treatment costs : Utilisation of the skin cancer screening and skin cancer treatment costs in organ transplant recipients]. Hautarzt 2018; 69:570-575. [PMID: 29651516 DOI: 10.1007/s00105-018-4159-9] [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] [Indexed: 10/17/2022]
Abstract
BACKGROUND Organ transplant recipients have an up to 250-times higher risk to develop skin cancer. This article evaluated the utilisation of skin cancer screening and the treatment costs for skin cancer in organ transplant recipients. Patients of the health insurance AOK Bremen/Bremerhaven had been identified and the need for skin cancer prevention trainings was derived. METHODS The number of organ transplant recipients (ICD code Z94.0-4) with and without any history of skin cancer (ICD code C43/C44), the utilisation of dermatologic health care services, and the costs for treatments with the diagnosis Z94.0-4 with and without C43/C44 were evaluated. The analyses were carried out for the period from 2009-2014 by using the accounting systems of the AOK. RESULTS Between 2009 and 2014, 231 organ transplant recipients had been recorded. By mid-2014, 20% of these insured persons developed skin cancer and the mean incidence was 2.76% per year. On average, 43% of these patients were seen by a dermatologist at least once a year, whereby only 15% of the organ transplant recipients participated in the annual skin cancer screening. In 29% of the patients without any history of skin cancer, a skin examination was never performed by a dermatologist or a general practitioner. In all, 17 inpatient cases of organ transplant recipients with the primary diagnosis C43/C44 were analyzed. This resulted in total costs of 54,707 € (on average about 3200 € per case). CONCLUSIONS The increased incidence of skin cancer and the associated treatment costs indicate the need for skin cancer prevention training.
Collapse
Affiliation(s)
- D Jäckel
- Rechts- und Staatswissenschaftliche Fakultät, Ernst-Moritz-Arndt-Universität Greifswald, Greifswald, Deutschland. .,Klinik für Dermatologie, Allergologie und Phlebologie, Klinikum Bremerhaven, Bremerhaven, Deutschland.
| | - N I Schlothauer
- ehemals Versorgungsmanagement/Medizin, AOK Bremen/Bremerhaven, Bremen, Deutschland
| | - H Zeeb
- Abt. Prävention und Evaluation, Leibniz-Institut für Präventionsforschung und Epidemiologie - BIPS, Bremen, Deutschland
| | - G Wagner
- Klinik für Dermatologie, Allergologie und Phlebologie, Klinikum Bremerhaven, Bremerhaven, Deutschland
| | - M M Sachse
- Klinik für Dermatologie, Allergologie und Phlebologie, Klinikum Bremerhaven, Bremerhaven, Deutschland
| |
Collapse
|
21
|
Wagner G. The Design of Quality Control. Methods Inf Med 2018. [DOI: 10.1055/s-0038-1636652] [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] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
SummaryQuality control of medical data and judgements plays an essential part in the efforts to put medicine on a sounder basis. In the past, control procedures have been neglected because of the bulky work often connected with them; now, however, modern mechanical and electronic equipment opens up the possibility to check thoroughly with a justifiable expenditure of time and effort. Profound checking of the data is especially necessary if statistical analyses are to be carried out, because even extremely sophisticated calculations will in reality be of little value if they rest on uncertain foundations.Scientific quality control makes use of different methods. Formal errors (e. g., slips of the pen, mistakes in coding, etc.) can often be detected by comparing the data with confidence limits or by testing for incompatibility. Such controls can very well be made by computers. Frequency distributions can occasionally be checked for plausibility. For this sort of control analysis, the probability paper is best suited. The most effective possibility to avoid or to find errors is repeated or multiple examination. Statistical models can be used to estimate the effects of defined errors on the results of an investigation. Possibilities of quality control should already be envisaged in the planning stage of an investigation.
Collapse
|
22
|
Wagner G, Posner G, Wolf T. Staging Cancer: TNM Literature 1963—1982. Methods Inf Med 2018. [DOI: 10.1055/s-0038-1635442] [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] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
The prognosis of a malignant tumour largely depends on the stage of the disease at the beginning of a specific therapy; statistics of therapy are comparable only if they show the distribution of the cases to the different stages of the disease. Aiming to improve the comparability of the data and findings acquired from the cancer patient, the UICC has, for more than 30 years, been endeavouring to develop uniform rules for acquiring the stage of the disease and the degree of spread with malignant tumours. For this purpose, UICC has developed the TNM system which makes it possible to state accurately and in a reproduceable form the stage of the primary tumour (T) and the regional lymphatic nodes (N) as well as the possible existence of metastases (M). The third edition of the TNM rules appeared in English in 1978, in the following years in numerous other languages. Today the TNM system represents the only basis for the documentation of the cancer stage which has been introduced worldwide. However, it is by no means »complete«; for some forms of cancer proposals for TNM classification are still outstanding (e.g., tumours of the pancreas, the central nervous system, the bones and the soft tissues). Moreover, malignant lymphomas cannot be classified according to the principles of TNM. Here the so-called »Ann Arbor Classification« from the year 1971 is recommended.The UICC has called upon its national committees to check the classification proposals available so far as to their usefulness and practicability. Corresponding field studies are under way in several countries. This bibliography covers a section of the TNM literature of the last 20 years. From a total number of about 2,000 publications, applying the TNM system, we selected 300 which discuss the system critically and, in most instances, make suggestions for its improvement. The first part of the bibliography contains an alphabetically arranged list of the titles according to authors’ names; the second part differentiates the tumors dealt with by their site.We thank Mrs. L. Blumenthal, Mrs. I. Schäfer and Mrs. U. Wolber for their cooperation in setting up this bibliography.
Collapse
|
23
|
Wagner G. Ätiologische upd pathogenetische Untersuchungen beim Lupus vulgaris. Methods Inf Med 2018. [DOI: 10.1055/s-0038-1636210] [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] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
Der Lupus vulgaris — die in Mitteleuropa häufigste und soziologisch bedeutsamste Form der Hauttuberkulose — eignet sieh als Modell für ätiologische Untersuchungen insofern besonders gut, weil die Lupuskranken in Deutschland seit 1934 in zentralen Institutionen registriert werden und dadurch nahezu alle Erkrankten in der Population erfaßt und langzeitig beobachtet worden sind. Die Lupuskartei des Landes Schleswig-Holstein überwacht den Krankheitsverlauf der registrierten Kranken seit über 10 Jahren mittels des maschinellen Lochkartenverfahrens. Jeder Patient wird jährlich einmal nachuntersucht; die dabei erhobenen Befunde werden auf Lochkarten übernommen. Die chronologisch geordneten Lochkarten jedes Patienten gestatten einen genauen Uberblick über den individuellen Krankheitsverlauf.Seitdem man erkannt hat, daß Entstehung und klinische Variabilität des tuberkulösen Geschehens nicht allein durch das bloße Vorliegen von Tuberkelbakterien hinreichend erklärt werden können, hat die Suche nach krankheitsauslösenden und den Krankheitsverlauf beeinflussenden „Mitfaktoren” erneute Aktualität gewonnen. Die eigenen diesbezüglichen Untersuchungen an über 2 000 Lupuskranken haben ergeben, daß als derartige Mitfaktoren neben dem Geschlecht gewisse exogene Momente (wie körperliche Überbeanspruchung, schlechte Ernährung, bestimmte klimatische Bedingungen und soziales Milieu), eine Rolle spielen, dagegen nicht — wie man bisher geglaubt hat — das Lebensalter. Eine vorhergehende Lymphknoten-tuberkulöse fördert ebenfalls die Entstehung eines Lupus vulgaris. Die tuberkulöse Gesamtbelastung des Organismus ist entscheidend für den Verlauf der Hauttuberkulose. Der Lupus vulgaris verkürzt an sich die Lebenserwartung nicht; die Frühsterblichkeit der Lupösen ist allein auf ihre erhöhte Sterblichkeit an Lungentuberkulose zurückzuführen. Mit den bei den internen Organtuberkulosen entwickelten immunpathologischen Vorstellungen allein läßt sich das klinische Phänomen „Lupus vulgaris” nicht ausreichend plausibel erklären.
Collapse
|
24
|
Stutzer G, Wagner G. Über die Selektivität der sog. I-Zahl im „Allgemeinen Krankenblattkopf” und die Brauchbarkeit ihrer einzelnen Komponenten. Methods Inf Med 2018. [DOI: 10.1055/s-0038-1636218] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
Die im „Allgemeinen Krankenblattkopf” empfohlene 9 stellige Identifikationszahl (sog. I-Zahl) wurde anhand eines Krankengutes von über 19 000 Patienten der Universitäts-Hautklinik Kiel auf ihre Selektivität hin geprüft. Der methodische Weg der hierfür erforderlichen Materialaufbereitung und -kontrolle wird geschildert. Insgesamt ergaben sich 63/19 378 (= 0.325 %) Doppelbesetzungen, d. h. auf 1000 Patienten kamen rund 3 mal je 2 Personen mit gleicher I-Zahl vor. Die gute Brauchbarkeit der I-Zahl als selektive Patienten-Kennzahl in der Klinik ist damit zahlenmäßig unter Beweis gestellt.Von den einzelnen Komponenten der I-Zahl ist der Kombinationsschlüssel für die Erfassung von Geschlecht -|- Mehrlingseigenschaft als unvorteilhaft zu bezeichnen, da die zusätzliche Erfassung der Mehrlingseigenschaft nichts zu einer Verbesserung der Selektivität der I-Zahl beiträgt. Eine solche würde erst erreicht, wenn statt der Mehrlingseigenschaft die Geburtsrangfolge registriert würde. Es ist aber fraglich, ob der mit jedem derartigen Kombinationsschlüssel zwangsläufig verbundene Mehraufwand an Arbeit überhaupt lohnt.Der im „Allgemeinen Krankenblattkopf” empfohlene Namensschlüssel hat sich dagegen sehr bewährt. Sein Anteil an der Gesamtselektivität der I-Zahl ist eine Funktion der Besetzungsstärke der Geburtsjahre, die sich in Form einer Binomial Verteilung darstellen läßt. Diese Formel wird entwickelt und anhand der eigenen Zahlen getestet, wobei sich eine sehr gute Übereinstimmung zwischen Theorie und Praxis ergibt.Aus Archivierungsgründen wäre es vorzuziehen, die I-Zahl statt mit der Codeziffer für das Geschlecht mit dem Geburtsdatum beginnen zu lassen.
Collapse
|
25
|
Abstract
The present bibliography aims at informing and stimulating researchers when studying the multiple facets of medical diagnosis. The complexity of investigation in this domain can be judged by the fact that papers dealing with medical diagnosis do not appear in medical journals only. Clearly, medical diagnosis is no longer a strictly medical problem. Mathematical and statistical models and analyses must be created and improved before computer programs for diagnostics can be elaborated.
Collapse
|
26
|
|
27
|
Abstract
Aufbauend auf den mit dem »Allgemeinen Krankenblattkopf« gewonnenen Erfahrungen wurde ein modifizierter Krankenblattkopf entwickelt, der seit Januar 1966 bei den Kliniken der Universitäten Heidelberg und Mannheim in Gebrauch ist. — Nach kritischer Stellungnahme zu den Punkten der Originalempfehlung von 1961, die sich nicht bewährt haben, beschreiben Verff. Form und Inhalt der neuen Version sowie die Methodik der Verarbeitung der hierin erfaßten Basisinformationen über den Patienten. Abschließend werden einige Ergänzungs- bzw. Änderungsvorschläge diskutiert, die bei zukünftigen Planungen berücksichtigt werden sollten.
Collapse
|
28
|
Köhler C, Hardegg W, Wagner G. Ergebnisse einer Umfrage zur Zeitschriften-Grundausstättung einer medizinisch en Fakultätsbibliothek. Methods Inf Med 2018. [DOI: 10.1055/s-0038-1636264] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
Zur Ermittlung des unbedingt erforderlichen Zeitschriften-Grundstockes für die geplante Medizinische Fakultätsbibliothek an der Universität Heidelberg wurden die Angehörigen des Lehrkörpers gebeten, in einer Liste von 890 verschiedenen Zeitschriftentiteln aus den Bereichen der Medizin ünd der Naturwissenschaften den jeweils für sie persönlich zutreffenden Dringlichkeitsgrad zu vermerken. 92 Dozenten beteiligten sich an der Umfrage; ihre Antworten wurden einem Gewichtungsverfahren unterzogen, das eine objektive Vergleichbarkeit gestattet.Die Umfrage bestätigte die alte Bibliothekserfahrung, daß nur relativ wenige Zeitschriften sehr häufig, die meisten dagegen relativ selten bzw. nur von einem kleinen Benutzerkreis gelesen werden. Nur 10 (= 1, 1%) der 890 in der Titelliste enthaltenen Periodika wurden von mehr als 50% der Dozenten als »häufig gebraucht« gekennzeichnet. Die Theoretiker scheinen einen wesentlich breiteren Sektor der medizinischen und naturwissenschaftlichen Fachliteratur zu lesen als die Kliniker; sie gaben fast doppelt so viele Titel als »dringend benötigt« an wie letztere. Bei den Klinikern wurden deutschsprachige Fachzeitschriften am häufigsten gewünscht; bei den Theoretikern überwiegen die englischsprachigen Periodika. Zeitschriften in anderen Sprachen spielen nur eine untergeordnete Rolle.Die 50 am häufigsten gelesenen Zeitschriften sowie die jeweils 3 am höchsten bewerteten Fachblätter in 64 unterschiedenen Spezialgebieten werden mitgeteilt.
Collapse
|
29
|
Nacke O, Wagner G. Bibliographie zum Thema „Die Rolle des Fehlers in der Medizin; Fehlerforschung als Aufgabe der medizinischen Dokumentation”. Methods Inf Med 2018. [DOI: 10.1055/s-0038-1636283] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
|
30
|
Wagner G. Versuchsplanung in der Fehlerforschung. Methods Inf Med 2018. [DOI: 10.1055/s-0038-1636280] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
|
31
|
Tautu P, Wagner G. A Stochastic Model for the Inheritance of the Cancer Proneness Phenotype. Methods Inf Med 2018. [DOI: 10.1055/s-0038-1635492] [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] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
SummaryA continuous parameter, stationary Gaussian process is introduced as a first approach to the probabilistic representation of the phenotype inheritance process. With some specific assumptions about the components of the covariance function, it may describe the temporal behaviour of the “cancer-proneness phenotype” (CPF) as a quantitative continuous trait. Upcrossing a fixed level (“threshold”) u and reaching level zero are the extremes of the Gaussian process considered; it is assumed that they might be interpreted as the transformation of CPF into a “neoplastic disease phenotype” or as the non-proneness to cancer, respectively.
Collapse
|
32
|
|
33
|
Köhler CO, Wagner G, Wolber U. Patient Scheduling — (Bibliography). Methods Inf Med 2018. [DOI: 10.1055/s-0038-1636579] [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] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
The entire field of information processing in medicine is today already spread out and branched to such an extent that it is no longer possible to set up a survey on relevant literature as a whole. But even in narrow parts of medical informatics it is hardly possible for the individual scientist to keep up to date with new literature. Strictly defined special bibliographies on certain topics are most helpful.In our days, problems of optimal patient scheduling and exploitation of resources are gaining more and more importance. Scientists are working on the solution of these problems in many places.The bibliography on »Patient Scheduling« presented here contains but a few basic theoretical papers on the problem of waiting queues which are of importance in the area of medical care. Most of the papers cited are concerned with practical approaches to a solution and describe current systems in medicine.In listing the literature, we were assisted by Mrs. Wieland, Mr. Dusberger and Mr. Henn, in data acquisition and computer handling by Mrs. Gieß and Mr. Schlaefer. We wish to thank all those mentioned for their assistance.
Collapse
|
34
|
Wagner G. The Classification of Malignant Tumors. Methods Inf Med 2018. [DOI: 10.1055/s-0038-1635491] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
|
35
|
Abstract
This paper is an analysis of the most important mathematical aspects of medical diagnosis: logical probability, rationality and decision theory, gambling models, pattern analysis, hazy and fuzzy subsets theory and, finally, the stochastic inquiry process.
Collapse
|
36
|
Abstract
A Bibliography of Manual, Automated, and Computer-Processed Techniques E. R. McLean, Stefanie Y. Foote, G. WagnekThe taking of a patient’s history, which has always played a central part in the practice of medicine, is one of the physician’s most time—consuming activities. As a consequence, the resultant history occasionally suffers from this time pressure and is not as complete and thorough as it might be. Over the years, a number of techniques have been developed to aid the physician in this task. The first attempt at systematizing medical history taking dates back to Martinet in 1825. In the most simple approach, the doctor collects the history data by interviewing the patient himself; alternatively, he can use the assistance of a resident, nurse, or other assistant. After the Second World War, attempts were made to improve the process by means of pencil-and-paper questionnaires. These were filled out by the patient and then reviewed by the physician upon completion.With the advent of the computer, it has become possible to key-punch or optically scan these question-naires; and then, using batch processing, to provide the examining doctor with a computer-summarized report. By making use of remote terminals, patients can be interviewed by means of conversational, interactive computer programs which both ask questions and records responses. These time-shared systems, while the ijiost costly and complex, offer the greatest potential for multi-level branching and comprehensive questioning.Since this aspect of the delivery of medical care is still in the developmental stage, a number of approaches are being tried, each with respective strengths and weaknesses. The accompanying biblio-graphy, comprising 720 citations, offers a comprehensive review of these techniques. It is a combination of two distinct research efforts: one, compiled by G. Wagner and B. Schwan, Heidelberg, in 19(39 and published in Anamnese, Hans-J. Heite (Ed.), F. Κ. Schattauer Verlag, Stuttgart 1971; and the other compiled by Ε. R. McLean and S. V. Foote in 1974 at the Center for Information Studies, Graduate School of Management, University of California, Los Angeles. This composite bibliography mainly restricts itself to the literature of the last 30 years. References to older literature can be taken from standard works, such as G. Grund and E. Stevenson.
Collapse
|
37
|
Köhler CO, Wagner G, Wolber U. Computer-assisted Writing of Medical Reports — A Bibliography. Methods Inf Med 2018. [DOI: 10.1055/s-0038-1636456] [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] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
Since the middle of the sixties, the possibilities of electronic data processing have been used to an increasing extent not only for internal communication in the hospital itself but also for external communication between hospital, medical practitioners, health offices etc. The problems arising when writing a medical report or an epicrisis are very similar so that we considered both aspects of the problem of automating the setting up of reports in this bibliography.We are not conceited enough to believe that we have covered all relevant papers concerning this widely dispersed subject. Surely, however, this bibliography will offer a good approach to special studies. We should appreciate advice about missing references.
Collapse
|
38
|
Abstract
The number of publications dealing with different aspects of the problems of screening for cancer is growing so fast that only very few specialists can have a complete knowledge of the literature in this domain. For this reason, we are restricting our compilation to relevant publications from 1971—1980. We deliberately omitted short notes, abstracts, editorials, technical reports, letters to the editor as well as papers written in a language with restricted circulation (e. g. Russian and Japanese). Nevertheless, the bibliography includes almost 1,200 titles.As D. M. Eddy noticed in 1980, the screening problem resembles many other problems in medicine: it is important, it is urgent, but it is also very complicated. We experienced this complexity when trying to fit the many aspects of our topic into a classification. This finally took the following shape:
Collapse
|
39
|
Abstract
KRAZTUR, a generator for the generation of programs or systems for clinical documentation and data processing, is described in its essential functions.
Collapse
|
40
|
Wawersik J, Köhler C, Wagner G. Beitrag zur Datenverarbeitung in der Anaesthesiologie. Methods Inf Med 2018. [DOI: 10.1055/s-0038-1636117] [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] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
Die Arbeit stellt einen in praxi bewährten Narkose-Dokumentationsbogen vor, der dazu dienen soll, den Betriebsablauf einer Anaesthesie-Abteilung und ihre Inanspruchnahme in verschiedenen medizinischen Fachbereichen zu erfassen, über die Angemessenheit der angewendeten Narkosetechnik und Allgemeinbehandlung und ihre Beziehungen zum Risiko des Patienten und zur Komplikationshäufigkeit während der Narkose Auskunft zu geben sowie Zusammenhangsfragen zwischen Narkosetechnik, Narkotika und Komplikationen zu untersuchen. Dabei wird auch das Problem einer sinnvollen Datenreduktion unter dem Aspekt einer zweckmäßigen Tabellenauswahl für Ort und Art des operativen Eingriffs, Narkotika und Komplikationen während der Narkose diskutiert.
Collapse
|
41
|
Thome R, Köhler C, Wagner G. VARTAB — A System to create VARiable TABulations without any Knowledge in Programming. Methods Inf Med 2018. [DOI: 10.1055/s-0038-1636019] [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] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
Also in the field of medicine the computer is used increasingly for statistical evaluation of data. Unfortunately, the physician ▪— unlike the natural scientist — is, as a rule, not yet able to write himself the programs for the processing of his own data. This situation, on the one hand, frustrates the medical scientist, and, on the other hand, burdens the official programmers, who are expected to help the doctor.The steadily growing number of requests for programming support led us to develop a variable tabulation program (VARTAB) the rules of which are so simple that they can be learned in very short time also by physicians who have no programming knowledge at all. The VARTAB system consists of two parts: 1. a data-standardizing conversion program STAND and 2. the tabulation outprint program TABOUT. The concepts of both programs, the work to be done by the user and the potential and the restrictions of the system are discussed in detail.
Collapse
|
42
|
|
43
|
García J, Wagner G, Bailón R, Sörnmo L, Laguna P, Pueyo E. Time Course of ECG Depolarization and Repolarization Changes during Ischemia in PTCA Recordings. Methods Inf Med 2018. [DOI: 10.1055/s-0038-1633832] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
Summary
Objectives:
In this work we studied the temporal evolution of changes in the electrocardiogram (ECG) as a consequence of the induced ischemia during prolonged coronary angioplasty, comparing the time course of indexes reflecting depolarization and those reflecting repolarization.
Methods:
We considered both local (measured at specific points of the ECG) and global (obtained from the Karhunen-Loève transform) indexes. In particular, the evolution of Q, R and S wave amplitudes during ischemia was analyzed with respect to classical indexes such as ST level. As a measurement of sensitivity we used an Ischemic Changes Sensor (ICS), which reflects the capacity of an index to detect changes in the ECG.
Results:
The results showed that, in leads with low-amplitude ST-T complexes, the S wave amplitude was more sensitive in detecting ischemia than was the commonly used index ST60. It was found that in such leads the S wave amplitude initially exhibited a delayed response to ischemia when compared to ST60, but its performance was better from the second minute of occlusion. The global indexes describing the ST-T complex were, in terms of the ICS, superior to the S wave amplitude for ischemia detection.
Conclusions:
Ischemic ECG changes occur both at repolarization and depolarization, with alterations in the depolarization period appearing later in time. Local indexes are less sensitive to ischemia than global ones.
Collapse
|
44
|
Hennig K, Woller P, Strietzel M, Wagner G. 99Mo-markiertes Natriummolybdat — Herstellung und Eigenschaften sowie Verhalten im menschlichen Körper. Nuklearmedizin 2018. [DOI: 10.1055/s-0037-1621278] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
ZusammenfassungTrägerfreies 99Mo (Halbwertzeit 67 h) läßt sich aus den Spaltprodukten bei Bestrahlung von Uran mit thermischen Neutronen gewinnen. Etwa 45 h nach seiner radiochemischen Aufarbeitung steht 99Mo im Gleichgewicht mit dem Tochterprodukt 99mTc (Halbwertzeit 6 h). Nach intravenöser Injektion eines derartigen Molybdat-Technetat-Gemisches wird 99Mo sehr rasch und in hohem Grad in der Leber angereichert und ermöglicht deshalb eine szintigraphische Darstellung dieses Organs, während 99mTc vorwiegend von Schilddrüse, Magen und Speicheldrüsen aufgenommen wird. Da die Strahlung von 99Mo zum Nachweis weit weniger geeignet ist als die von 99mTc, wird 99Mo zweckmäßig über das Tochterprodukt gemessen, das beim Zerfall von 99Mo in der Leber gebildet wird und offenbar liegenbleibt. Entsprechend dem „Wachsen” von 99mTc in der Leber ist der optimale Zeitpunkt für die Szintigraphie etwa 24 h p.i. Die Strahlenbelastung beträgt für die Leber als kritisches Organ etwa 5 rad pro 100 µC injizierter 99Mo-Aktivität.Nach unseren Untersuchungen können wir die Eignung von 99Mo Molybdat zur Leberszintigraphie auf Grund seiner Eigenschaften und seines Verhaltens im menschlichen Körper bestätigen.
Collapse
|
45
|
Abstract
A 31-year-old man developed a fast-growing tumor on the right upper arm within a black tattoo, which could be classified histologically as pilomatrixoma. While the age of the patient and the rapid growth of the tumor cannot be regarded as typical findings of pilomatrixomas, the localization on the upper arm is one of their predilection points. Despite the wide spread use of tattoos in the last few decades, tumor development in tattooed skin is rarely reported. It is still controversial whether the ingredients of the tattoo agents can be responsible for tumor induction.
Collapse
Affiliation(s)
- G Wagner
- Klinik für Dermatologie, Allergologie und Phlebologie, Klinikum Bremerhaven Reinkenheide, Postbrookstr. 103, 27574, Bremerhaven, Deutschland.
| | - V Meyer
- Klinik für Dermatologie, Allergologie und Phlebologie, Klinikum Bremerhaven Reinkenheide, Postbrookstr. 103, 27574, Bremerhaven, Deutschland
| | - M M Sachse
- Klinik für Dermatologie, Allergologie und Phlebologie, Klinikum Bremerhaven Reinkenheide, Postbrookstr. 103, 27574, Bremerhaven, Deutschland
| |
Collapse
|
46
|
Wise T, Radua J, Via E, Cardoner N, Abe O, Adams TM, Amico F, Cheng Y, Cole JH, de Azevedo Marques Périco C, Dickstein DP, Farrow TFD, Frodl T, Wagner G, Gotlib IH, Gruber O, Ham BJ, Job DE, Kempton MJ, Kim MJ, Koolschijn PCMP, Malhi GS, Mataix-Cols D, McIntosh AM, Nugent AC, O'Brien JT, Pezzoli S, Phillips ML, Sachdev PS, Salvadore G, Selvaraj S, Stanfield AC, Thomas AJ, van Tol MJ, van der Wee NJA, Veltman DJ, Young AH, Fu CH, Cleare AJ, Arnone D. Common and distinct patterns of grey-matter volume alteration in major depression and bipolar disorder: evidence from voxel-based meta-analysis. Mol Psychiatry 2017; 22:1455-1463. [PMID: 27217146 PMCID: PMC5622121 DOI: 10.1038/mp.2016.72] [Citation(s) in RCA: 357] [Impact Index Per Article: 51.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/29/2015] [Revised: 03/01/2016] [Accepted: 03/23/2016] [Indexed: 12/11/2022]
Abstract
Finding robust brain substrates of mood disorders is an important target for research. The degree to which major depression (MDD) and bipolar disorder (BD) are associated with common and/or distinct patterns of volumetric changes is nevertheless unclear. Furthermore, the extant literature is heterogeneous with respect to the nature of these changes. We report a meta-analysis of voxel-based morphometry (VBM) studies in MDD and BD. We identified studies published up to January 2015 that compared grey matter in MDD (50 data sets including 4101 individuals) and BD (36 data sets including 2407 individuals) using whole-brain VBM. We used statistical maps from the studies included where available and reported peak coordinates otherwise. Group comparisons and conjunction analyses identified regions in which the disorders showed common and distinct patterns of volumetric alteration. Both disorders were associated with lower grey-matter volume relative to healthy individuals in a number of areas. Conjunction analysis showed smaller volumes in both disorders in clusters in the dorsomedial and ventromedial prefrontal cortex, including the anterior cingulate cortex and bilateral insula. Group comparisons indicated that findings of smaller grey-matter volumes relative to controls in the right dorsolateral prefrontal cortex and left hippocampus, along with cerebellar, temporal and parietal regions were more substantial in major depression. These results suggest that MDD and BD are characterised by both common and distinct patterns of grey-matter volume changes. This combination of differences and similarities has the potential to inform the development of diagnostic biomarkers for these conditions.
Collapse
Affiliation(s)
- T Wise
- Department of Psychological Medicine, Centre for Affective Disorders, Institute of Psychiatry, Psychology and Neuroscience, King’s College London, London, UK
| | - J Radua
- Department of Psychosis Studies, Institute of Psychiatry, Psychology and Neuroscience, King’s College London, London, UK
- Research Unit, FIDMAG Germanes Hospitalàries – CIBERSAM, Sant Boi de Llobregat, Barcelona, Spain
- Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden
| | - E Via
- Mental Health, Parc Taulí Sabadell-CIBERSAM, University Hospital, Sabadell, Barcelona, Spain
- Department of Psychiatry, Bellvitge University Hospital-IDIBELL, Barcelona, Spain
| | - N Cardoner
- Mental Health, Parc Taulí Sabadell-CIBERSAM, University Hospital, Sabadell, Barcelona, Spain
| | - O Abe
- Department of Radiology, Nihon University School of Medicine, Tokyo, Japan
| | - T M Adams
- Department of Psychological Medicine, Centre for Affective Disorders, Institute of Psychiatry, Psychology and Neuroscience, King’s College London, London, UK
| | - F Amico
- Department of Psychiatry, Trinity College Institute of Neuroscience, Trinity College, Dublin, Ireland
| | - Y Cheng
- Department of Psychiatry, The 1st Affiliated Hospital of Kunming Medical University, Kunming, PR China
| | - J H Cole
- Computational, Cognitive and Clinical Neuroimaging Laboratory, Department of Medicine, Imperial College London, London, UK
| | - C de Azevedo Marques Périco
- Department of Neuroscience, Medical School, Fundação do ABC, Santo André, SP, Brazil
- ABC Center of Studies on Mental Health, Santo André, SP, Brazil
| | - D P Dickstein
- PediMIND Program, Bradley Hospital, Department of Psychiatry, Brown University, East Providence, RI, USA
| | - T F D Farrow
- Academic Clinical Neurology, Department of Neuroscience, University of Sheffield, Sheffield, UK
| | - T Frodl
- Department of Psychiatry and Psychotherapy, Otto-von-Guericke University, Magdeburg, Germany
- Department of Psychiatry, University of Dublin, Trinity College, Dublin, Ireland
| | - G Wagner
- Psychiatric Brain and Body Research Group Jena, Department of Psychiatry and Psychotherapy, Jena University Hospital, Jena, Germany
| | - I H Gotlib
- Department of Psychology, Stanford University, Stanford, CA, USA
| | - O Gruber
- Section for Experimental Psychopathology and Neuroimaging, Department of General Psychiatry, Heidelberg University Hospital, Heidelberg, Germany
| | - B J Ham
- Department of Psychiatry, Korea University College of Medicine, Seoul, South Korea
| | - D E Job
- Neuroimaging Sciences, University of Edinburgh, Edinburgh, UK
- Scottish Imaging Network–A Platform for Scientific Excellence (SINAPSE), Giffnock, UK
- Centre for Clinical Brain Sciences, University of Edinburgh, Edinburgh, UK
| | - M J Kempton
- Department of Psychosis Studies, Institute of Psychiatry, Psychology and Neuroscience, King’s College London, London, UK
- Department of Neuroimaging, Institute of Psychiatry, Psychology and Neuroscience, King’s College London, London, UK
| | - M J Kim
- Department of Psychological and Brain Sciences, Dartmouth College, Hanover, NH, USA
| | - P C M P Koolschijn
- Department of Psychology, Dutch Autism and ADHD Research Center, Brain and Cognition, University of Amsterdam, Amsterdam, The Netherlands
| | - G S Malhi
- CADE Clinic, Discipline of Psychiatry, Sydney Medical School, University of Sydney, Sydney, NSW, Australia
| | - D Mataix-Cols
- Department of Psychosis Studies, Institute of Psychiatry, Psychology and Neuroscience, King’s College London, London, UK
- Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden
| | - A M McIntosh
- Division of Psychiatry, University of Edinburgh, Edinburgh, UK
| | - A C Nugent
- Experimental Therapeutics and Pathophysiology Branch, Intramural Research Program, National Institute of Mental Health, National Institutes of Health, Bethesda, MD, USA
| | - J T O'Brien
- Institute for Ageing and Health, Newcastle University, Campus for Ageing and Vitality, Newcastle upon Tyne, UK
- Department of Psychiatry, University of Cambridge, Cambridge, UK
| | - S Pezzoli
- Department of Psychosis Studies, Institute of Psychiatry, Psychology and Neuroscience, King’s College London, London, UK
- Department of Neuroscience, Medical School, University of Sheffield, Sheffield, UK
| | - M L Phillips
- Department of Psychiatry, University of Pittsburgh, School of Medicine, Pittsburgh, PA
| | - P S Sachdev
- Centre for Healthy Brain Ageing (CHeBA), School of Psychiatry, University of New South Wales, Randwick, NSW, Australia
- Neuropsychiatric Institute, Prince of Wales Hospital, Randwick, NSW, Australia
| | - G Salvadore
- Janssen Research and Development, Titusville, NJ, USA
| | - S Selvaraj
- Department of Psychiatry and Behavioral Sciences, Center of Excellence on Mood Disorders, Medical School, University of Texas Health Science Center at Houston, Houston, TX, USA
| | - A C Stanfield
- The Patrick Wild Centre, Royal Edinburgh Hospital, University of Edinburgh, Edinburgh, UK
| | - A J Thomas
- Institute for Ageing and Health, Newcastle University, Campus for Ageing and Vitality, Newcastle upon Tyne, UK
| | - M J van Tol
- NeuroImaging Center, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| | - N J A van der Wee
- Department of Psychiatry, Leiden University Medical Center, Leiden University, Leiden, The Netherlands
- Leiden Institute for Brain and Cognition, Leiden, The Netherlands
| | - D J Veltman
- Department of Psychiatry, VU University Medical Center, Amsterdam, The Netherlands
| | - A H Young
- Department of Psychological Medicine, Centre for Affective Disorders, Institute of Psychiatry, Psychology and Neuroscience, King’s College London, London, UK
| | - C H Fu
- Department of Psychological Medicine, Centre for Affective Disorders, Institute of Psychiatry, Psychology and Neuroscience, King’s College London, London, UK
- School of Psychology, University of East London, London, UK
| | - A J Cleare
- Department of Psychological Medicine, Centre for Affective Disorders, Institute of Psychiatry, Psychology and Neuroscience, King’s College London, London, UK
| | - D Arnone
- Department of Psychological Medicine, Centre for Affective Disorders, Institute of Psychiatry, Psychology and Neuroscience, King’s College London, London, UK
| |
Collapse
|
47
|
Luong G, Wrzus C, Wagner G, Riediger M. EMBEDDING CONTEXT IN INVESTIGATIONS OF AFFECTIVE VARIABILITY: AGE DIFFERENCES IN AFFECT-HEALTH LINKS. Innov Aging 2017. [DOI: 10.1093/geroni/igx004.3900] [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: 11/14/2022] Open
Affiliation(s)
- G. Luong
- Human Development and Family Studies, Colorado State University, Fort Collins, Colorado,
| | - C. Wrzus
- Johannes Gutenberg University, Mainz, Germany,
| | - G. Wagner
- Max Planck Institute for Human Development, Berlin, Germany,
- Berlin Technical University, Berlin, Germany,
| | - M. Riediger
- Max Planck Institute for Human Development, Berlin, Germany,
- Free University of Berlin, Berlin, Germany
| |
Collapse
|
48
|
Párducz L, Eszik I, Wagner G, Burián K, Endrész V, Virok DP. Impact of antiseptics on Chlamydia trachomatis growth. Lett Appl Microbiol 2017; 63:260-7. [PMID: 27472980 DOI: 10.1111/lam.12625] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [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: 04/04/2016] [Revised: 06/30/2016] [Accepted: 07/19/2016] [Indexed: 11/30/2022]
Abstract
UNLABELLED Bacterial vaginosis is a frequent dysbiosis, where the normal lactobacillus-dominated flora is replaced by an anaerob/aerob polymicrobial flora. Bacterial vaginosis increases the risk of acquiring sexually transmitted infections (STI) including the most frequent Chlamydia trachomatis infections. Intravaginal antiseptics are part of the bacterial vaginosis treatment, and ideally they should also inhibit the bacterial vaginosis-related STI. Therefore, we tested the antichlamydial activity of four antiseptics: iodine aqueous solution, povidone-iodine, chlorhexidine and borax. First, we measured the impact of antiseptics on the viability of the HeLa cervical epithelial cells, and calculated the maximum nontoxic concentrations. Next, we infected the cells with C. trachomatis preincubated for 1 h with the particular antiseptic. The chlamydial growth was measured by direct quantitative PCR (qPCR) of the infected cells. The minimal inhibitory concentrations (MIC) of chlorhexidine and povidone-iodine were 3·91 and 97 μg ml(-1) respectively; however, the MIC of chlorhexidine was close to its maximum nontoxic concentration. The iodine aqueous solution and the borax showed no antichlamydial activity. Our in vitro studies showed that chlorhexidine and particularly povidone-iodine are potentially able to limit the bacterial vaginosis-related C. trachomatis infection. SIGNIFICANCE AND IMPACT OF THE STUDY We measured the antichlamydial effects of various antiseptics. These antiseptics are being used for the treatment of bacterial vaginosis, but their effect on the bacterial vaginosis-related sexually transmitted infections, particularly the most frequent Chlamydia trachomatis (C. trachomatis) infections has not been investigated. We showed that povidone-iodine (Betadine) inhibited the chlamydial growth in concentrations that was not toxic to the epithelial cells. We concluded that due to its additional antichlamydial effect, povidone-iodine could be a preferable antiseptic in bacterial vaginosis treatment.
Collapse
Affiliation(s)
- L Párducz
- Pándy Kálmán County Hospital, Gyula, Hungary
| | - I Eszik
- Department of Medical Microbiology and Immunobiology, University of Szeged, Szeged, Hungary
| | - G Wagner
- Pándy Kálmán County Hospital, Gyula, Hungary
| | - K Burián
- Department of Medical Microbiology and Immunobiology, University of Szeged, Szeged, Hungary
| | - V Endrész
- Department of Medical Microbiology and Immunobiology, University of Szeged, Szeged, Hungary
| | - D P Virok
- Department of Medical Microbiology and Immunobiology, University of Szeged, Szeged, Hungary.
| |
Collapse
|
49
|
Abstract
BACKGROUND Previous studies hypothesized that neurodevelopmental risk factors may play a role in the pathogenesis of obsessive-compulsive disorder (OCD). Cortical folding has been shown to be a reliable indicator for normal and altered neurodevelopment, but in OCD it has barely been investigated up to now. The present study investigates whether alterations in gyrification are detectable in OCD and, if so, how these are associated with clinical characteristics. METHOD We compared the local Gyrification Index (lGI) between 75 OCD patients and 75 matched healthy subjects across the whole brain. In addition, for those regions exhibiting an altered lGI in patients we explored a potential relationship to symptom severity, age of onset, and influence of medication. RESULTS OCD patients had a significantly decreased lGI in right parietal, precentral but also insula, temporal, pars triangularis and rostral middle frontal regions compared to healthy subjects. A positive association with age of onset was found but no association with symptom severity. There was no effect of co-morbidity or medication. CONCLUSIONS The reduced gyrification found in OCD confirms previous findings in other psychiatric disorders and suggests that alterations may already occur during early stages of brain development. Our findings support the idea that altered cortical folding might represent a trait characteristic of the disorder although longitudinal studies are needed to clarify the trajectory of this morphological measure in OCD.
Collapse
Affiliation(s)
- O G Rus
- Department of Neuroradiology,Klinikum rechts der Isar, Technische Universität München,Munich,Germany
| | - T J Reess
- Department of Neuroradiology,Klinikum rechts der Isar, Technische Universität München,Munich,Germany
| | - G Wagner
- Department of Psychiatry and Psychotherapy,Jena University Hospital,Jena,Germany
| | - M Zaudig
- Windach Institute and Hospital of Neurobehavioural Research and Therapy (WINTR),Windach,Germany
| | - C Zimmer
- Department of Neuroradiology,Klinikum rechts der Isar, Technische Universität München,Munich,Germany
| | - K Koch
- Department of Neuroradiology,Klinikum rechts der Isar, Technische Universität München,Munich,Germany
| |
Collapse
|
50
|
Wagner G, Meyer V, Sachse MM. [Generalized circumscribed scleroderma with blisters]. Hautarzt 2017; 68:566-570. [PMID: 28303284 DOI: 10.1007/s00105-017-3962-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The patient suffered from a 20-year course of generalized circumscribed scleroderma and presented with blisters in circumscribed areas of the affected skin. The development of subepidermal blisters has been described in all clinical forms of circumscribed scleroderma. Aetiology and pathogenesis of blister formation have not yet been clarified. An obstruction of the lymphatic vessels due to the present sclerosis is favoured. Treatment of bullous circumscribed scleroderma is considered to be difficult. Oral steroids, methotrexate, hydroxychloroquine and PUVA methods have been used with varying success.
Collapse
Affiliation(s)
- G Wagner
- Klinik für Dermatologie, Allergologie und Phlebologie, Klinikum Bremerhaven Reinkenheide, Postbrookstr. 103, 27574, Bremerhaven, Deutschland.
| | - V Meyer
- Klinik für Dermatologie, Allergologie und Phlebologie, Klinikum Bremerhaven Reinkenheide, Postbrookstr. 103, 27574, Bremerhaven, Deutschland
| | - M M Sachse
- Klinik für Dermatologie, Allergologie und Phlebologie, Klinikum Bremerhaven Reinkenheide, Postbrookstr. 103, 27574, Bremerhaven, Deutschland
| |
Collapse
|