6,503 results match your criteria: "University of Bonn - Life & Brain Center and Hertie Foundation[Affiliation]"

Histone H3-mutant gliomas are deadly brain tumors characterized by a dysregulated epigenome and stalled differentiation. In contrast to the extensive datasets available on tumor cells, limited information exists on their tumor microenvironment (TME), particularly the immune infiltrate. Here, we characterize the immune TME of H3.

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Introduction: A modern approach to ensuring privacy when sharing datasets is the use of synthetic data generation methods, which often claim to outperform classic anonymization techniques in the trade-off between data utility and privacy. Recently, it was demonstrated that various deep learning-based approaches are able to generate useful synthesized datasets, often based on domain-specific analyses. However, evaluating the privacy implications of releasing synthetic data remains a challenging problem, especially when the goal is to conform with data protection guidelines.

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Introduction: The German Central Health Study Hub is a service that was initially developed at short notice during the COVID-19 pandemic. Since then, it has been expanded in scope, content, active users and functionality. The service is aimed at two main audiences: data provider and data consumers.

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Individual health data is crucial for scientific advancements, particularly in developing Artificial Intelligence (AI); however, sharing real patient information is often restricted due to privacy concerns. A promising solution to this challenge is synthetic data generation. This technique creates entirely new datasets that mimic the statistical properties of real data, while preserving confidential patient information.

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Article Synopsis
  • Chronic high cholesterol levels lead to systemic immune responses that accelerate atherosclerosis, but the impact of alternating high-fat diets (HFD) had not been well studied.
  • Researchers used a mouse model to compare the effects of an alternating HFD versus a continuous HFD on atherosclerosis progression, finding that the alternating diet significantly worsened the condition.
  • The study revealed that this worsening was linked to IL-1β production, which triggered inflammatory responses and increased neutrophil levels that contributed to plaque formation and exacerbated atherosclerosis, suggesting that targeting these pathways could reverse the effects.
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Cardiovascular training versus resistance training for fatigue in people with cancer.

Cochrane Database Syst Rev

September 2024

Cochrane Haematology, Institute of Public Health, Faculty of Medicine and University Hospital Cologne, University of Cologne, Cologne, Germany.

Background: With prevalence estimates between 50% and 90% of people with cancer, cancer-related fatigue is one of the most common morbidities related to cancer and its treatment. Exercise is beneficial for the treatment of cancer-related fatigue. However, the efficacy of different types of exercise (i.

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Unlabelled: The rice panicle is the principal organ to influence productivity and traits affecting panicle architecture determine sink size and yield potential. Improving panicle architecture may be effective in increasing yield under low-input conditions, but which traits are of importance under such conditions and how they are genetically controlled is not well understood. Using recombinant inbred lines (RILs) derived from a cross between a modern variety IR64 and a low fertility tolerant accession DJ123, quantitative trait locus (QTL) mapping was conducted under high soil fertility in Japan and low fertility in Madagascar.

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A molecular mechanism to diversify Ca signaling downstream of Gs protein-coupled receptors.

Nat Commun

September 2024

Molecular, Cellular and Pharmacobiology Section, Institute for Pharmaceutical Biology, University of Bonn, Bonn, Germany.

A long-held tenet in inositol-lipid signaling is that cleavage of membrane phosphoinositides by phospholipase Cβ (PLCβ) isozymes to increase cytosolic Ca in living cells is exclusive to Gq- and Gi-sensitive G protein-coupled receptors (GPCRs). Here we extend this central tenet and show that Gs-GPCRs also partake in inositol-lipid signaling and thereby increase cytosolic Ca. By combining CRISPR/Cas9 genome editing to delete Gα, the adenylyl cyclase isoforms 3 and 6, or the PLCβ1-4 isozymes, with pharmacological and genetic inhibition of Gq and G11, we pin down Gs-derived Gβγ as driver of a PLCβ2/3-mediated cytosolic Ca release module.

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Squamate reptiles are central for studying phenotypic correlates of evolutionary transitions from oviparity to viviparity because these transitions are numerous, with many of them being recent. Several models of life-history theory predict that viviparity is associated with increased female size, and thus more female-biased sexual size dimorphism (SSD). Yet, the corresponding empirical evidence is overall weak and inconsistent.

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Article Synopsis
  • Wheat is a super important crop for food, but its production has been going down because of drought and water problems.
  • Researchers tested a plant hormone called abscisic acid (ABA) to see if it could help wheat grow better during tough stages when drought makes it hard for the plants to survive.
  • They found that using ABA made the wheat plants taller and healthier, increasing yields and improving many growth factors, which helped the plants deal with the drought better.
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Forget me not: The effect of doxycycline on human declarative memory.

Eur Neuropsychopharmacol

December 2024

Experimental Pharmacopsychology and Psychological Addiction Research, Department of Adult Psychiatry and Psychotherapy, University Hospital of Psychiatry Zurich, University of Zurich, Zurich, Switzerland; Neuroscience Center Zurich, Joint Center of University of Zurich and Swiss Federal Institute of Technology Zurich, Zurich, Switzerland.

Investigations into neuroprotective drugs are in high demand for the treatment of neurodegenerative diseases, such as multiple sclerosis or Alzheimer's disease, but also psychiatric disorders, such as depression, trauma, and substance use. One potential drug class being investigated are tetracyclines impacting on a variety of neuroprotective mechanisms. At the same time, tetracyclines like doxycycline have been suggested to affect human fear and spatial memory as well as reducing declarative memory retention.

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A neurometabolic mechanism involving dmPFC/dACC lactate in physical effort-based decision-making.

Mol Psychiatry

August 2024

Laboratory of Behavioral Genetics, Brain Mind Institute, École Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland.

Motivation levels vary across individuals, yet the underlying mechanisms driving these differences remain elusive. The dorsomedial prefrontal cortex/dorsal anterior cingulate cortex (dmPFC/dACC) and the anterior insula (aIns) play crucial roles in effort-based decision-making. Here, we investigate the influence of lactate, a key metabolite involved in energy metabolism and signaling, on decisions involving both physical and mental effort, as well as its effects on neural activation.

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Understanding healthcare professionals' (HCPs) experiences with patients undergoing hematopoietic allogeneic stem cell transplantation (allo-HSCT) is crucial, given its dual nature of offering a hope for cure which on the other hand is accompanied by a high risk for morbidity and mortality. Yet, how HCPs experience their patients' existential threats remains unexplored. Qualitative thematic content analysis was employed to comprehend these experiences.

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Fibroblast growth factors (FGFs) are required for the specification and formation of the epibranchial placodes, which give rise to the distal part of the cranial sensory ganglia. However, it remains unclear whether FGFs play a role in regulating the neurite outgrowth of the epibranchial placode-derived ganglia during further development. Previous studies have shown that Fibroblast growth factor 8 (FGF8) promotes neurite outgrowth from the statoacoustic ganglion in vitro.

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Introduction: The prevalence of mild cognitive impairment (MCI) and dementia is increasing as the oldest old population grows, requiring a nuanced understanding of their care needs. Few studies have examined need profiles of oldest old patients with MCI or dementia. Therefore, this study aimed to identify patients' need profiles.

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Dynamics of epigenetic modifications such as acetylation and deacetylation of histone proteins have been shown to be crucial for the life cycle development and survival of Plasmodium falciparum, the deadliest malaria parasite. In this study, we present a novel series of peptoid-based histone deacetylase (HDAC) inhibitors incorporating nitrogen-containing bicyclic heteroaryl residues as a new generation of antiplasmodial peptoid-based HDAC inhibitors. We synthesized the HDAC inhibitors by an efficient multicomponent protocol based on the Ugi four-component reaction.

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The first line of defense for the central nervous system (CNS) against injury or disease is provided by microglia. Microglia were long believed to stay in a dormant/resting state, reacting only to injury or disease. This view changed dramatically with the development of modern imaging techniques that allowed the study of microglial behavior in the intact brain over time, to reveal the dynamic nature of their responses.

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Article Synopsis
  • Researchers identified bi-allelic disruptive variants as the cause of autosomal recessive intellectual developmental disorder type 65, while dominant variants are harder to link to specific traits due to their presence in unaffected individuals.
  • The study involved a retrospective analysis of 21 individuals with likely pathogenic variants, focusing on clinical information and molecular data from their families.
  • Key findings revealed that those with dominant disruptive variants exhibited more developmental and behavioral problems, while individuals with dominant missense variants had a higher occurrence of renal and skin anomalies, enhancing the understanding of the related neurodevelopmental disorder.
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  • Paroxysmal nocturnal haemoglobinuria (PNH) is a rare blood disorder causing serious issues due to chronic hemolysis and can significantly affect patients' quality of life.
  • A post hoc analysis evaluated the effectiveness of pegcetacoplan, a targeted complement C3 inhibitor, in PNH patients with poor bone marrow function from the PEGASUS and PRINCE studies.
  • Results showed that while normalisation of certain health parameters was challenging, a significant percentage of patients experienced clinically meaningful improvements in hemoglobin, LDH levels, and fatigue after treatment with pegcetacoplan.
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  • Rice plants develop an apoplastic barrier in their roots to limit oxygen loss during flooding, which helps maintain root growth in low-oxygen soils.
  • Researchers tested the role of the Leaf Gas Film 1 (LGF1) gene in forming this barrier by comparing a rice mutant lacking LGF1, its wild type, and a variant with increased LGF1 expression.
  • The study found that the mutant had a weaker barrier to oxygen loss, but restoring LGF1 function significantly improved barrier strength, linked to higher glycerol ester levels in root cells.
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Cysteine-rich with EGF-like domains 2 (CRELD2) is an endoplasmic reticulum stress-inducible angiogenic growth factor promoting ischemic heart repair.

Nat Cardiovasc Res

February 2024

Division of Molecular and Translational Cardiology, Hans Borst Center for Heart and Stem Cell Research, Hannover Medical School, Hannover, Germany.

Tissue repair after myocardial infarction (MI) is guided by autocrine and paracrine-acting proteins. Deciphering these signals and their upstream triggers is essential when considering infarct healing as a therapeutic target. Here we perform a bioinformatic secretome analysis in mouse cardiac endothelial cells and identify cysteine-rich with EGF-like domains 2 (CRELD2), an endoplasmic reticulum stress-inducible protein with poorly characterized function.

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Mitochondria are highly dynamic organelles which undergo constant fusion and fission as part of the mitochondrial quality control. In genetic diseases and age-related neurodegenerative disorders, altered mitochondrial fission-fusion dynamics have been linked to impaired mitochondrial quality control, disrupted organelle integrity and function, thereby promoting neural dysfunction and death. The key enzyme regulating mitochondrial fission is the GTPase Dynamin-related Protein 1 (Drp1), which is also considered as a key player in mitochondrial pathways of regulated cell death.

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Cold mediates maize root hair developmental plasticity via epidermis-specific transcriptomic responses.

Plant Physiol

November 2024

INRES, Institute of Crop Science and Resource Conservation, Crop Functional Genomics, University of Bonn, Bonn 53113, Germany.

Cold stress during early development limits maize (Zea mays L.) production in temperate zones. Low temperatures restrict root growth and reprogram gene expression.

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Background: Transitions of care after cancer treatment pose a major challenge for patient safety as adverse events and unplanned healthcare utilization occur frequently. At this point, patient and family engagement (PFE) is particularly valuable since patients and their families experience various challenges along this pathway, such as changing roles and recurrent needs to navigate across structural gaps between different services. However, there is currently a lack of evidence on the impact of PFE on patient safety in transitions after cancer treatment.

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The addition of metastasis-directed radiotherapy (MDRT) to immunotherapy in patients with advanced urothelial carcinoma (aUC) has shown promising results. We report the real-world data from the ARON-2 study (NCT05290038) on the impact of conventional (CRT) or stereotactic body radiotherapy (SBRT) on the outcome of aUC patients receiving pembrolizumab after platinum-based-chemotherapy. Medical records of 837 patients were reviewed from 60 institutions in 20 countries.

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