553 results match your criteria: "Johannes Gutenberg University Medical Center[Affiliation]"

The TIRAP protein is an adaptor protein in TLR signaling which links TLR2 and TLR4 to the adaptor protein Myd88. The transcriptomic profiles of zebrafish larvae from a , and mutant and the corresponding wild type controls under unchallenged developmental conditions revealed a specific involvement of in calcium homeostasis and myosin regulation. Metabolomic profiling showed that the mutation results in lower glucose levels, whereas a mutation leads to higher glucose levels.

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Neutrophils are peripheral blood-circulating leukocytes that play a pivotal role in host defense against bacterial pathogens which upon activation, they release web-like chromatin structures called neutrophil extracellular traps (NETs). Here, we analyzed and compared the importance of myeloid differentiation factor 88 (MYD88), peptidyl arginine deiminase 4 (PAD4), and gasdermin D (GSDMD) for NET formation in vivo following sepsis and neutrophilia challenge. Injection of lipopolysaccharide (LPS)/E.

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The elucidation of the functional neuroanatomy of human fear, or threat, extinction has started in the 2000s by a series of enthusiastically greeted functional magnetic resonance imaging (fMRI) studies that were able to translate findings from rodent research about an involvement of the ventromedial prefrontal cortex (vmPFC) and the hippocampus in fear extinction into human models. Enthusiasm has been painfully dampened by a meta-analysis of human fMRI studies by Fullana and colleagues in 2018 who showed that activation in these areas is inconsistent, sending shock waves through the extinction research community. The present review guides readers from the field (as well as non-specialist readers desiring safe knowledge about human extinction mechanisms) during a series of exposures with corrective information.

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Fibromyalgia syndrome (FMS) is a chronic disorder characterized by widespread musculoskeletal pain, fatigue and tenderness and closely associated with high levels of stress. FMS is therefore often considered a stress-related disease. A comparative study was conducted with 99 individuals diagnosed with FMS and a control group of 50 pain-free individuals.

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Article Synopsis
  • Fibrinolysis plays a crucial role in the release of hematopoietic stem cells from bone marrow, affecting the development of B-cell acute lymphoblastic leukemia (B-ALL).
  • Activation of plasmin, driven by annexin A2, alters the extracellular matrix (ECM), which impacts cancer cell growth by trapping the growth factor IGF1 and hindering signaling pathways.
  • Inhibiting plasmin activation with ε-aminocaproic acid (EACA) shows promise in reducing tumor size and extending survival in B-ALL models, suggesting that targeting fibrinolysis could be a helpful addition to cancer treatment.
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Positive cognitive reappraisal flexibility is associated with lower levels of perceived stress.

Behav Res Ther

December 2024

Department of Psychology, University of Zurich, Zurich, Switzerland; Department of Psychiatry, Psychotherapy and Psychosomatics, Psychiatric University Hospital (PUK), University of Zurich, Zurich, Switzerland.

This study investigates the role of positive cognitive reappraisal (PCR) flexibility and variability in mental health in response to real-life stressors among college students. We employed ecological momentary assessment and intervention through ReApp, a mobile app designed to train and promote PCR. We analyzed data from the intervention group of a randomized controlled trial with a total of 100 participants who used ReApp for three weeks.

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Sphingosine 1-phosphate (S1P) is a lysosphingolipid with antiatherogenic properties, but mechanisms underlying its effects remain unclear. We here investigated atherosclerosis development in cholesterol-rich diet-fed LDL receptor-deficient mice with high or low overexpression levels of S1P receptor 1 (S1P1) in macrophages. S1P1-overexpressing macrophages showed increased activity of transcription factors PU.

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Background: Esophageal strictures following esophageal atresia repair are a source of significant morbidity. To test new therapeutic approaches, we designed a piglet model of esophageal stricture by resecting variable lengths of esophagus with subsequent re-anastomosis. This study describes the model and validates its physiologic impact by blinded analysis of the weight gains of the piglets.

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Coronary artery disease (CAD) is characterized by narrowing and subsequent blockade of coronary arteries, and imposes a significant health and economic burden. Stent and scaffold devices are introduced in advanced CAD to improve vascular stability and restore blood flow. Although in vitro flow systems like the Chandler loop have been developed to enhance the understanding of interactions between device materials, their coatings, and vascular cells, imaging-based in vitro analysis of device performance is limited.

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Background: Caries experience in Argentine children is quite high and no national data are present.

Aim: This cross-sectional observational survey aimed to assess the oral health status of schoolchildren in Buenos Aires (CABA) using CTNI and to evaluate the ecological association between health inequalities and caries prevalence.

Design: Data were collected, via a clustered procedure, during the 2016-2018 school years.

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Building Resilience: The Stress Response as a Driving Force for Neuroplasticity and Adaptation.

Biol Psychiatry

October 2024

Leibniz Institute for Resilience Research, Mainz, Germany; Neuroimaging Center, Focus Program Translational Neuroscience, Johannes Gutenberg University Medical Center, Mainz, Germany.

People exhibit an extraordinary capacity to adjust to stressful situations. Here, we argue that the acute stress response is a major driving force behind this adaptive process. In addition to immediately freeing energy reserves, facilitating a rapid and robust neurocognitive response, and helping to reinstate homeostasis, the stress response also critically regulates neuroplasticity.

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The association of multi-system conditions on mental health trajectories during naval deployment.

Mil Psychol

October 2024

Performance and Expertise Research Centre, School of Psychological Sciences, Macquarie University, Sydney, Australia.

This study seeks to enhance understanding of mental health trajectories across Navy deployments and the predictors of those trajectories by exploring a range of job design and individual-level factors. Personnel from the Royal Australian Navy were surveyed on pre-deployment, mid-deployment, and post-deployment. At pre-deployment, there were 559 ( = 30.

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Article Synopsis
  • * Current treatments for HAE need improvement in effectiveness, quality of life, and fewer side effects, making FXIIa an appealing target for new therapies.
  • * Garadacimab, a monoclonal antibody that inhibits FXIIa, is the most promising treatment in clinical trials, showing potential as a long-term solution for HAE, with further research suggested for its applications in other conditions.
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Analysis of polyphosphate in mammalian cells and tissues: methods, functions and challenges.

Curr Opin Biotechnol

December 2024

Institute of Clinical Chemistry and Laboratory Medicine, University Medical Center Hamburg-Eppendorf, Hamburg, Germany; Center for Thrombosis and Hemostasis (CTH), Johannes Gutenberg University Medical Center, Mainz, Germany; Irish Centre for Vascular Biology, School of Pharmacy and Biomolecular Sciences, Royal College of Surgeons in Ireland, Dublin, Ireland. Electronic address:

Polyphosphates play a crucial role in various biological processes, such as blood coagulation, energy homeostasis, and cellular stress response. However, their isolation, detection, and quantification present significant challenges. These difficulties arise primarily from their solubility, low concentration in mammals, and structural similarity to other ubiquitous biopolymers.

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Objectives: The aims of this study were to suggest patient-adjusted optical spectral transmission (OST) cut-off values for the first time and to develop clinical models that predict the probability of an early rheumatoid arthritis (RA) diagnosis based on OST findings and the 2010 American College of Rheumatology/European League Against Rheumatism (ACR/EULAR) classification criteria as a reference standard.

Methods: OST examinations were performed in newly diagnosed RA patients and healthy controls by the HandScan device. Moreover, RA patients underwent a full clinical [tender/swollen joint counts (TJC/SJC), disease activity score-28 (DAS28)] and laboratory evaluation.

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Coagulation factor X promotes resistance to androgen-deprivation therapy in prostate cancer.

Cancer Cell

October 2024

Institute of Oncology Research (IOR), 6500 Bellinzona, Switzerland; Università della Svizzera Italiana, Faculty of Biomedical Sciences, CH6900 Lugano, Switzerland; Medical Oncology Unit, Oncology Institute of Southern Switzerland, Ente Ospedaliero Cantonale, CH6500 Bellinzona, Switzerland; Veneto Institute of Molecular Medicine, 35129 Padova, Italy; Department of Medicine, University of Padova, 35121 Padova, Italy; Department of Health Sciences and Technology (D-HEST) ETH Zurich, 8092 Zurich, Switzerland. Electronic address:

Article Synopsis
  • The study investigates how coagulation factor X (FX) impacts tumor growth in castration-resistant prostate cancer (CRPC) by examining the prostate tumor microenvironment in mouse models through single-cell RNA sequencing.
  • It finds that immunosuppressive neutrophils (PMN-MDSCs) produce FX, which activates pathways that enhance tumor cell growth independent of androgens, indicating a role for FX in cancer progression.
  • Targeting FXa could impede the oncogenic function of PMN-MDSCs and potentially improve treatment outcomes when combined with existing therapies, with high levels of FX and related markers correlating to worse survival in CRPC patients.
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A single-domain antibody targeting factor XII inhibits both thrombosis and inflammation.

Nat Commun

September 2024

State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China.

Article Synopsis
  • Factor XII (FXII) is crucial for activating the body's intrinsic coagulation pathway and has a previously unclear role in inflammation.
  • Treating male mice with a novel antibody (Nb-Fc) that targets FXII significantly reduced arterial thrombosis without disrupting normal blood clotting.
  • The study shows that inhibiting FXII can lower inflammation-related symptoms and complications during procedures like extracorporeal membrane oxygenation (ECMO), indicating its potential as a therapeutic target for thrombo-inflammatory diseases.
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Article Synopsis
  • - Coagulation factor XII (FXII) is linked to thrombosis and inflammation and is found in increased levels in diabetes and diabetic kidney disease (DKD), but its specific role in DKD was unclear until now.
  • - The study reveals that FXII is present in kidney tubular cells, correlating with kidney dysfunction in DKD patients; mice lacking FXII showed protection against kidney damage from high blood sugar.
  • - FXII promotes cell damage through a signaling pathway involving uPAR and integrin β1, leading to oxidative stress and cell aging; blocking these pathways may provide new diagnostic and treatment options for DKD and similar diseases.
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Frontostriatal salience network expansion in individuals in depression.

Nature

September 2024

Department of Psychiatry, Weill Cornell Medicine, New York, NY, USA.

Decades of neuroimaging studies have shown modest differences in brain structure and connectivity in depression, hindering mechanistic insights or the identification of risk factors for disease onset. Furthermore, whereas depression is episodic, few longitudinal neuroimaging studies exist, limiting understanding of mechanisms that drive mood-state transitions. The emerging field of precision functional mapping has used densely sampled longitudinal neuroimaging data to show behaviourally meaningful differences in brain network topography and connectivity between and in healthy individuals, but this approach has not been applied in depression.

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An Update on Polyphosphate In Vivo Activities.

Biomolecules

August 2024

Institute of Clinical Chemistry and Laboratory Medicine (O26), University Medical Center Hamburg-Eppendorf, D-20246 Hamburg, Germany.

Polyphosphate (polyP) is an evolutionary ancient inorganic molecule widespread in biology, exerting a broad range of biological activities. The intracellular polymer serves as an energy storage pool and phosphate/calcium ion reservoir with implications for basal cellular functions. Metabolisms of the polymer are well understood in procaryotes and unicellular eukaryotic cells.

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Article Synopsis
  • Transcranial ultrasonic stimulation (TUS) is a non-invasive technique showing promise for neuromodulation in humans, especially affecting motor cortical functions, although it’s been primarily tested in animals so far.
  • Recent studies indicated that the motor inhibition effects observed in humans may actually stem from peripheral auditory stimulation rather than direct neuromodulatory action of TUS.
  • The findings urge researchers to reassess prior studies that didn't control for auditory confounds and emphasize the need for rigorous experimental designs to ensure accurate interpretations in future TUS research.
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Article Synopsis
  • Imbalances in proteolytic activity are linked to inflammatory bowel diseases (IBD), where intestinal proteases can disrupt homeostasis and promote inflammation through protease-activated receptors (PARs).
  • This study focuses on the role of microbial proteases in activating PAR2 and found that proteolytic cleavage of PAR2 increases intestinal permeability and inflammation during colitis.
  • Mice with a mutated, protease-resistant version of PAR2 showed less severe colitis, suggesting that targeting PAR2 cleavage by bacterial proteases could be a potential therapeutic approach for IBD.
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Tracking politically motivated reasoning in the brain: the role of mentalizing, value-encoding, and error detection networks.

Soc Cogn Affect Neurosci

September 2024

Department of Microeconomics and Public Economics, School of Business and Economics, Maastricht University, Maastricht 6200, The Netherlands.

Susceptibility to misinformation and belief polarization often reflects people's tendency to incorporate information in a biased way. Despite the presence of competing theoretical models, the underlying neurocognitive mechanisms of motivated reasoning remain elusive as previous empirical work did not properly track the belief formation process. To address this problem, we employed a design that identifies motivated reasoning as directional deviations from a Bayesian benchmark of unbiased belief updating.

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