32 Works

An empirical evaluation of the impact scenario of pooling bodies of evidence from randomized controlled trials and cohort studies in medical research

Nils Bröckelmann, Julia Stadelmaier, Louisa Harms, Charlotte Kubiak, Jessica Beyerbach, Martin Wolkewitz, Jörg J. Meerpohl & Lukas Schwingshackl
Abstract Background Randomized controlled trials (RCTs) and cohort studies are the most common study design types used to assess treatment effects of medical interventions. We aimed to hypothetically pool bodies of evidence (BoE) from RCTs with matched BoE from cohort studies included in the same systematic review. Methods BoE derived from systematic reviews of RCTs and cohort studies published in the 13 medical journals with the highest impact factor were considered. We re-analyzed effect estimates...

Krüppel-like factor 7 influences translation and pathways involved in ribosomal biogenesis in breast cancer

Anne-Marie Lüchtenborg, Patrick Metzger, Miguel Cosenza Contreras, Victor Oria, Martin L. Biniossek, Franziska Lindner, Klemens Fröhlich, Ambrus Malyi, Thalia Erbes, Nicole Gensch, Jochen Maurer, Andreas Thomsen, Melanie Boerries, Oliver Schilling, Martin Werner & Peter Bronsert
Abstract Background Ribosomal biogenesis and ribosomal proteins have attracted attention in the context of tumor biology in recent years. Instead of being mere translational machineries, ribosomes might play an active role in tumor initiation and progression. Despite its importance, regulation of ribosomal biogenesis is still not completely understood. Methods Using Gene Set Enrichment Analysis of RNA sequencing and proteomical mass spectrometry data in breast cancer cells expressing Krüppel-like factor 7 (KLF7), we identified processes altered...

Early clinical course of biopsy-proven IgA vasculitis nephritis

Sarina Butzer, Imke Hennies, Charlotte Gimpel, Jutta Gellermann, Gesa Schalk, Sabine König, Anja K. Büscher, Anja Lemke & Martin Pohl
Abstract Background IgA vasculitis (IgAV) is the most common form of systemic vasculitis in childhood and frequently involves the kidney. A minority of patients with IgA vasculitis nephritis (IgAVN), especially those presenting with heavy proteinuria and/or kidney failure at onset, are at risk of chronic end-stage kidney disease. For deciding upon treatment intensity, knowledge of the short-term clinical course of IgAVN is needed to improve treatment algorithms. Methods For this retrospective multicenter study, the medical...

Borrelia multiplex: a bead-based multiplex assay for the simultaneous detection of Borrelia specific IgG/IgM class antibodies

Julia Häring, Max J. Hassenstein, Matthias Becker, Julia Ortmann, Daniel Junker, André Karch, Klaus Berger, Tatia Tchitchagua, Olaf Leschnik, Manuela Harries, Daniela Gornyk, Pilar Hernández, Berit Lange, Stefanie Castell, Gérard Krause, Alex Dulovic, Monika Strengert & Nicole Schneiderhan-Marra
Abstract Background Lyme borreliosis (LB) is the most common tick-borne infectious disease in the northern hemisphere. The diagnosis of LB is usually made by clinical symptoms and subsequently supported by serology. In Europe, a two-step testing consisting of an enzyme-linked immunosorbent assay (ELISA) and an immunoblot is recommended. However, due to the low sensitivity of the currently available tests, antibody detection is sometimes inaccurate, especially in the early phase of infection, leading to underdiagnoses. Methods...

PI3K/AKT signaling allows for MAPK/ERK pathway independency mediating dedifferentiation-driven treatment resistance in melanoma

Eyleen Corrales, Ella Levit-Zerdoun, Patrick Metzger, Ralf Mertes, Ariane Lehmann, Julia Münch, Steffen Lemke, Silke Kowar & Melanie Boerries
Abstract Background Current therapeutic management of advanced melanoma patients largely depends on their BRAF mutation status. However, the vast heterogeneity of the tumors hampers the success of therapies targeting the MAPK/ERK pathway alone. Dissecting this heterogeneity will contribute to identifying key players in the oncogenic progression to tailor more effective therapies. Methods We performed a comprehensive molecular and phenotypic characterization of a panel of patient-derived BRAFV600E-positive melanoma cell lines. Transcriptional profiling was used to identify...

Temporal regulation of notch activation improves arteriovenous fistula maturation

Qunying Guo, Guang Chen, Hunter Cheng, Ying Qing, Luan Truong, Quan Ma, Yun Wang & Jizhong Cheng
Abstract Background Arteriovenous fistula (AVF) maturation is a process involving remodeling of venous arm of the AVFs. It is a challenge to balance adaptive AVF remodeling and neointima formation. In this study we temporally controlled Notch activation to promote AVF maturation while avoiding neointima formation. Methods Temporal Notch activation was controlled by regulating the expression of Notch transcription factor, RBP-Jκ, or dnMAML1 (dominant negative MAML2) in vascular smooth muscle cells (VSMCs). AVF mouse model was...

Impact of NAFLD on clinical outcomes in hepatocellular carcinoma treated with sorafenib: an international cohort study

Jessica Howell, Amit Samani, Binish Mannan, Saur Hajiev, Leila Motedayen Aval, Rebecca Abdelmalak, Vincent C. Tam, Dominik Bettinger, Robert Thimme, Tamar H. Taddei, David E. Kaplan, Max Seidensticker & Rohini Sharma
Background:The impact of nonalcoholic fatty liver disease (NAFLD) on overall survival (OS), treatment response and toxicity in patients with hepatocellular carcinoma (HCC) treated with sorafenib is unknown. We examined the impact of NAFLD on survival and toxicity in an international cohort of patients receiving sorafenib.Methods:Clinical and demographic data were collected from patients consecutively treated at specialist centres in Europe and North America. The impact of NAFLD on OS, sorafenib-specific survival and toxicity compared with other...

Empirical evidence of study design biases in nutrition randomised controlled trials: a meta-epidemiological study

Julia Stadelmaier, Isabelle Roux, Maria Petropoulou & Lukas Schwingshackl
Abstract Background Instruments to critically appraise randomised controlled trials (RCTs) are based on evidence from meta-epidemiological studies. We aim to conduct a meta-epidemiological study on the average bias associated with reported methodological trial characteristics such as random sequence generation, allocation concealment, blinding, incomplete outcome data, selective reporting, and compliance of RCTs in nutrition research. Methods We searched the Cochrane Database of Systematic Reviews, for systematic reviews of RCTs, published between 01 January 2010 and 31...

Empirical evidence of study design biases in nutrition randomised controlled trials: a meta-epidemiological study

Julia Stadelmaier, Isabelle Roux, Maria Petropoulou & Lukas Schwingshackl
Abstract Background Instruments to critically appraise randomised controlled trials (RCTs) are based on evidence from meta-epidemiological studies. We aim to conduct a meta-epidemiological study on the average bias associated with reported methodological trial characteristics such as random sequence generation, allocation concealment, blinding, incomplete outcome data, selective reporting, and compliance of RCTs in nutrition research. Methods We searched the Cochrane Database of Systematic Reviews, for systematic reviews of RCTs, published between 01 January 2010 and 31...

Early clinical course of biopsy-proven IgA vasculitis nephritis

Sarina Butzer, Imke Hennies, Charlotte Gimpel, Jutta Gellermann, Gesa Schalk, Sabine König, Anja K. Büscher, Anja Lemke & Martin Pohl
Abstract Background IgA vasculitis (IgAV) is the most common form of systemic vasculitis in childhood and frequently involves the kidney. A minority of patients with IgA vasculitis nephritis (IgAVN), especially those presenting with heavy proteinuria and/or kidney failure at onset, are at risk of chronic end-stage kidney disease. For deciding upon treatment intensity, knowledge of the short-term clinical course of IgAVN is needed to improve treatment algorithms. Methods For this retrospective multicenter study, the medical...

Borrelia multiplex: a bead-based multiplex assay for the simultaneous detection of Borrelia specific IgG/IgM class antibodies

Julia Häring, Max J. Hassenstein, Matthias Becker, Julia Ortmann, Daniel Junker, André Karch, Klaus Berger, Tatia Tchitchagua, Olaf Leschnik, Manuela Harries, Daniela Gornyk, Pilar Hernández, Berit Lange, Stefanie Castell, Gérard Krause, Alex Dulovic, Monika Strengert & Nicole Schneiderhan-Marra
Abstract Background Lyme borreliosis (LB) is the most common tick-borne infectious disease in the northern hemisphere. The diagnosis of LB is usually made by clinical symptoms and subsequently supported by serology. In Europe, a two-step testing consisting of an enzyme-linked immunosorbent assay (ELISA) and an immunoblot is recommended. However, due to the low sensitivity of the currently available tests, antibody detection is sometimes inaccurate, especially in the early phase of infection, leading to underdiagnoses. Methods...

Prognostic value of tumor-infiltrating immune cells and immune checkpoints in elderly head-and-neck squamous cell carcinoma patients undergoing definitive (chemo)radiotherapy

Alexander Rühle, Jovan Todorovic, Simon S. K. Spohn, Eleni Gkika, Christoph Becker, Andreas Knopf, Constantinos Zamboglou, Tanja Sprave, Martin Werner, Anca-Ligia Grosu, Gian Kayser & Nils H. Nicolay
Abstract Background and purpose Tumor-infiltrating lymphocytes (TILs) are associated with locoregional control (LRC) in head-and-neck squamous cell carcinoma (HNSCC) patients undergoing (chemo)radiotherapy. As immunosenescence results in reduced immune activity, the role of TILs in elderly HNSCC patients may differ compared to younger patients, providing a rationale to study the prognostic role of TILs and immune checkpoints (ICs) in this population. Material and methods Sixty-three HNSCC patients aged ≥ 65 years undergoing definitive (chemo)radiotherapy between 2010...

Association of sex steroid hormones and new bone formation rate after iliac onlay grafting: a prospective clinical pilot study

Victoria Constanze Landwehr, Tobias Fretwurst, Julia Heinen, Kirstin Vach, Katja Nelson, Susanne Nahles & Gerhard Iglhaut
Abstract Purpose The present prospective study evaluates the association between new bone formation rate in the iliac onlay graft and sex steroid hormone serum levels. Methods A total of 15 partially or completely edentulous postmenopausal females and 9 males with less than 5 mm height of the remaining alveolar bone underwent iliac onlay grafting followed by dental implant placement using a two-stage approach. Sex hormone binding globulin and 17β-estradiol serum levels were investigated by electrochemiluminescence...

Temporal regulation of notch activation improves arteriovenous fistula maturation

Qunying Guo, Guang Chen, Hunter Cheng, Ying Qing, Luan Truong, Quan Ma, Yun Wang & Jizhong Cheng
Abstract Background Arteriovenous fistula (AVF) maturation is a process involving remodeling of venous arm of the AVFs. It is a challenge to balance adaptive AVF remodeling and neointima formation. In this study we temporally controlled Notch activation to promote AVF maturation while avoiding neointima formation. Methods Temporal Notch activation was controlled by regulating the expression of Notch transcription factor, RBP-Jκ, or dnMAML1 (dominant negative MAML2) in vascular smooth muscle cells (VSMCs). AVF mouse model was...

Required displacement factors for evaluating and comparing climate impacts of intensive and extensive forestry in Germany

Buschbeck Christian & Pauliuk Stefan
Abstract Background Forestry plays a major role in climate change mitigation. However, which intensity of logging is best suited for that task remains controversial. We contribute to the debate by quantitatively analyzing three different forest management scenarios in Germany—a baseline scenario which represents a continuation of current forest management practice as well as an intensive and an extensive logging scenario. We assess whether increased carbon storage in wood products and substitution of other emission-intensive materials...

An empirical evaluation of the impact scenario of pooling bodies of evidence from randomized controlled trials and cohort studies in medical research

Nils Bröckelmann, Julia Stadelmaier, Louisa Harms, Charlotte Kubiak, Jessica Beyerbach, Martin Wolkewitz, Jörg J. Meerpohl & Lukas Schwingshackl
Abstract Background Randomized controlled trials (RCTs) and cohort studies are the most common study design types used to assess treatment effects of medical interventions. We aimed to hypothetically pool bodies of evidence (BoE) from RCTs with matched BoE from cohort studies included in the same systematic review. Methods BoE derived from systematic reviews of RCTs and cohort studies published in the 13 medical journals with the highest impact factor were considered. We re-analyzed effect estimates...

COVID-19 vaccine update: vaccine effectiveness, SARS-CoV-2 variants, boosters, adverse effects, and immune correlates of protection

Wei-Yu Chi, Yen-Der Li, Hsin-Che Huang, Timothy En Haw Chan, Sih-Yao Chow, Jun-Han Su, Louise Ferrall, Chien-Fu Hung & T.-C. Wu
Abstract Coronavirus Disease 2019 (COVID-19) has been the most severe public health challenge in this century. Two years after its emergence, the rapid development and deployment of effective COVID-19 vaccines have successfully controlled this pandemic and greatly reduced the risk of severe illness and death associated with COVID-19. However, due to its ability to rapidly evolve, the SARS-CoV-2 virus may never be eradicated, and there are many important new topics to work on if we...

Prognostic value of tumor-infiltrating immune cells and immune checkpoints in elderly head-and-neck squamous cell carcinoma patients undergoing definitive (chemo)radiotherapy

Alexander Rühle, Jovan Todorovic, Simon S. K. Spohn, Eleni Gkika, Christoph Becker, Andreas Knopf, Constantinos Zamboglou, Tanja Sprave, Martin Werner, Anca-Ligia Grosu, Gian Kayser & Nils H. Nicolay
Abstract Background and purpose Tumor-infiltrating lymphocytes (TILs) are associated with locoregional control (LRC) in head-and-neck squamous cell carcinoma (HNSCC) patients undergoing (chemo)radiotherapy. As immunosenescence results in reduced immune activity, the role of TILs in elderly HNSCC patients may differ compared to younger patients, providing a rationale to study the prognostic role of TILs and immune checkpoints (ICs) in this population. Material and methods Sixty-three HNSCC patients aged ≥ 65 years undergoing definitive (chemo)radiotherapy between 2010...

SLIT2 promoter hypermethylation predicts disease progression in chronic myeloid leukemia

De-long Wu, Yun Wang, Ting-juan Zhang, Ming-qiang Chu, Zi-jun Xu, Qian Yuan, Ji-chun Ma, Jiang Lin, Jun Qian & Jing-dong Zhou
Abstract Background Aberrant DNA methylation plays a crucial role in the progression of myeloid neoplasms. Previously, our literature reported that slit guidance ligand 2 (SLIT2) promoter methylation was associated with disease progression and indicated a poor prognosis in patients with myelodysplastic syndrome. Herein, we further investigated the clinical implications and role of SLIT2 promoter methylation in patients with chronic myeloid leukemia (CML). Methods The level of SLIT2 promoter methylation was determined in 104 CML patients,...

SLIT2 promoter hypermethylation predicts disease progression in chronic myeloid leukemia

De-long Wu, Yun Wang, Ting-juan Zhang, Ming-qiang Chu, Zi-jun Xu, Qian Yuan, Ji-chun Ma, Jiang Lin, Jun Qian & Jing-dong Zhou
Abstract Background Aberrant DNA methylation plays a crucial role in the progression of myeloid neoplasms. Previously, our literature reported that slit guidance ligand 2 (SLIT2) promoter methylation was associated with disease progression and indicated a poor prognosis in patients with myelodysplastic syndrome. Herein, we further investigated the clinical implications and role of SLIT2 promoter methylation in patients with chronic myeloid leukemia (CML). Methods The level of SLIT2 promoter methylation was determined in 104 CML patients,...

PI3K/AKT signaling allows for MAPK/ERK pathway independency mediating dedifferentiation-driven treatment resistance in melanoma

Eyleen Corrales, Ella Levit-Zerdoun, Patrick Metzger, Ralf Mertes, Ariane Lehmann, Julia Münch, Steffen Lemke, Silke Kowar & Melanie Boerries
Abstract Background Current therapeutic management of advanced melanoma patients largely depends on their BRAF mutation status. However, the vast heterogeneity of the tumors hampers the success of therapies targeting the MAPK/ERK pathway alone. Dissecting this heterogeneity will contribute to identifying key players in the oncogenic progression to tailor more effective therapies. Methods We performed a comprehensive molecular and phenotypic characterization of a panel of patient-derived BRAFV600E-positive melanoma cell lines. Transcriptional profiling was used to identify...

COVID-19 vaccine update: vaccine effectiveness, SARS-CoV-2 variants, boosters, adverse effects, and immune correlates of protection

Wei-Yu Chi, Yen-Der Li, Hsin-Che Huang, Timothy En Haw Chan, Sih-Yao Chow, Jun-Han Su, Louise Ferrall, Chien-Fu Hung & T.-C. Wu
Abstract Coronavirus Disease 2019 (COVID-19) has been the most severe public health challenge in this century. Two years after its emergence, the rapid development and deployment of effective COVID-19 vaccines have successfully controlled this pandemic and greatly reduced the risk of severe illness and death associated with COVID-19. However, due to its ability to rapidly evolve, the SARS-CoV-2 virus may never be eradicated, and there are many important new topics to work on if we...

Required displacement factors for evaluating and comparing climate impacts of intensive and extensive forestry in Germany

Buschbeck Christian & Pauliuk Stefan
Abstract Background Forestry plays a major role in climate change mitigation. However, which intensity of logging is best suited for that task remains controversial. We contribute to the debate by quantitatively analyzing three different forest management scenarios in Germany—a baseline scenario which represents a continuation of current forest management practice as well as an intensive and an extensive logging scenario. We assess whether increased carbon storage in wood products and substitution of other emission-intensive materials...

Humor in radiological breast cancer screening: a way of improving patient service?

Elisabeth Sartoretti, Thomas Sartoretti, Dow Mu Koh, Sabine Sartoretti-Schefer, Sebastian Kos, Romana Goette, Ricardo Donners, Robyn Benz, Johannes M. Froehlich, Simon Matoori, Peter Dubsky, Tino Plümecke, Rosemarie Forstner, Willibald Ruch, Matthias Meissnitzer, Klaus Hergan, Selina Largiader & Andreas Gutzeit
Abstract Background Breast cancer screening is essential in detecting breast tumors, however, the examination is stressful. In this study we analyzed whether humor enhances patient satisfaction. Methods In this prospective randomized study 226 patients undergoing routine breast cancer screening at a single center during October 2020 to July 2021 were included. One hundred thirty-two were eligible for the study. Group 1 (66 patients) received an examination with humorous intervention, group 2 (66 patients) had a...

Trends in Involuntary Psychiatric Hospitalization in British Columbia: Descriptive Analysis of Population-Based Linked Administrative Data from 2008 to 2018

Jackson P. Loyal, M. Ruth Lavergne, Mehdi Shirmaleki, Benedikt Fischer, Ridhwana Kaoser, Jack Makolewksi & Will Small
IntroductionInvoluntary psychiatric hospitalization occurs when someone with a serious mental disorder requires treatment without their consent. Trends vary globally, and currently, there is limited data on involuntary hospitalization in Canada. We examine involuntary hospitalization trends in British Columbia, Canada, and describe the social and clinical characteristics of people ages 15 and older who were involuntarily hospitalized between 2008/2009 and 2017/2018.MethodWe used population-based linked administrative data to examine and compare trends in involuntary and voluntary hospitalizations...

Registration Year

  • 2022
    32

Resource Types

  • Collection
    32

Affiliations

  • University of Freiburg
    32
  • University Medical Center Freiburg
    12
  • Shanghai Jiao Tong University
    6
  • Affiliated Hospital of Jiangsu University
    6
  • Jinan University
    5
  • Charité - University Medicine Berlin
    4
  • Hannover Medical School
    4
  • Huazhong University of Science and Technology
    4
  • Fudan University
    4
  • Hunan University of Arts and Science
    4