22,727 results match your criteria: "UniVersity of Bonn[Affiliation]"

Alligator weed ( (Mart.) Griseb.) is considered one of the worst invasive weeds in China.

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Background: Symptomatic cartilage defects of the knee joint are frequently diagnosed and can be treated with different available surgical methods. Nevertheless, there is currently no gold standard treatment for all indications. Minced cartilage implantation is increasingly coming into focus as a refined surgical technique.

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Simulating microgravity with 60 days of 6 degree head-down tilt bed rest compromises sleep.

NPJ Microgravity

December 2024

Institute of Aerospace Medicine, Department of Sleep and Human Factors Research, German Aerospace Center (DLR), Cologne, Germany.

Astronauts in space often experience sleep loss. In the AGBRESA (Artificial Gravity Bed Rest) study, we examined 24 participants (mean age ± SD, 33 ± 9 years) during two months of 6 head-down tilt (HDT) bed rest, which is a well-established spaceflight analogue. Polysomnography was recorded during baseline (BDC-9), HDT (nights 1, 8, 30 and 58) and recovery (R, nights 1 and 12).

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X-chromosome-wide association study for Alzheimer's disease.

Mol Psychiatry

December 2024

Univ. Lille, Inserm, CHU Lille, Institut Pasteur de Lille, LabEx DISTALZ - U1167-RID-AGE Facteurs de Risque et Déterminants Moléculaires des Maladies Liées au Vieillissement, Lille, France.

Article Synopsis
  • A study was conducted to investigate the X-chromosome's role in Alzheimer's Disease (AD), which had been overlooked in previous genome-wide association studies.
  • The research included 115,841 AD cases and 613,671 controls, considering different X-chromosome inactivation (XCI) states in females.
  • While no strong genetic risk factors for AD were found on the X-chromosome, seven significant loci were identified, suggesting areas for future research.
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  • Autosomal recessive dystrophic epidermolysis bullosa (RDEB) is a severe inherited skin disorder caused by mutations in a specific gene, presenting with symptoms like skin erosions and atrophic scars.
  • A study of a four-generation consanguineous family identified a harmful genetic mutation, c.409C>T (p.Arg137*), in two patients with RDEB through whole exome sequencing (WES).
  • The findings highlight the importance of WES in diagnosing complex genetic diseases and contribute to understanding the mutation spectrum of the gene in different populations.
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The impact of agricultural land use on biodiversity has been extensively examined through efforts to synthesize available data. Nevertheless, there is still a lack of a thorough synthesis describing the earthworm response to agricultural land-use Our meta-analysis compared undisturbed ecosystems (i.e.

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Article Synopsis
  • White matter damage, such as white matter hyperintensities (WMH), affects brain activity and can lead to cognitive symptoms, but the exact connection between this structural damage and brain function changes is still unclear.
  • Researchers used whole-brain modeling and a disconnectome approach along with data from 188 individuals to assess how WMH impacts both local and global brain dynamics, finding that while damage is generally local, it also decreases overall brain synchronization.
  • The study suggests that education may help mitigate the negative effects of WMH on brain connectivity, and the models developed can help evaluate how WMH specifically affects individuals' brain dynamics, providing insights for understanding brain function in diseases with similar disconnections
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Design of an international, phase IV, open-label study of simoctocog alfa in women/girls with hemophilia A undergoing surgery (NuDIMENSION).

Ther Adv Hematol

December 2024

Institute of Experimental Haematology and Transfusion Medicine, University Hospital Bonn, Medical Faculty, University of Bonn, Venusberg Campus 1, Gebäude 43, Bonn 53127, Germany.

Background: Although hemophilia A mainly affects males, carriers (defined as females with hemophilia A, as well as symptomatic or asymptomatic hemophilia A carriers) are at risk of excessive bleeding, particularly during trauma or during surgical procedures. Clinical trials have focused on male patients with severe disease, and data for females are limited. Improved, evidence-based treatment guidelines for management of hemophilia A carriers are required.

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Animal-sourced foods improve child nutrition in Africa.

Proc Natl Acad Sci U S A

December 2024

Center for Development Research (ZEF), University of Bonn, Bonn 53113, Germany.

Child undernutrition remains a widespread public health problem in the Global South, especially in Africa. Childhood stunting-meaning linear growth retardation-is a comprehensive and commonly used indicator of chronic child undernutrition and is mostly the result of insufficient nutrient intake, among other factors. Previous research showed that the consumption of animal-sourced foods (ASF), including meat, dairy, eggs, and fish, is associated with lower rates of child stunting, but reliable evidence for Africa is scant.

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Consumer interest in meat and dairy alternatives drives demand for plant-based protein ingredients. While soy and gluten dominate the market, there is a trend to explore alternative crops for functional ingredient production. The multitude of ingredients poses challenges for food manufacturers in selecting the right protein.

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Advanced Charge Extended Hückel (CEH) Model and a Consistent Adaptive Minimal Basis Set for the Elements = 1-103.

J Phys Chem A

December 2024

Mulliken Center for Theoretical Chemistry, Clausius-Institute for Physical and Theoretical Chemistry, University of Bonn, Beringstraße 4, Bonn 53115, Germany.

The Charge Extended Hückel (CEH) model, initially introduced for adaptive atomic orbital (AO) basis set construction ( , 159, 164108), has been significantly revised to enhance accuracy and robustness, particularly in challenging electronic situations. This revision includes an extension toward -elements, covering actinoids with their -electrons in the valence space. We present a novel noniterative approximation for the electrostatic contribution to the effective Fock matrix, which substantially improves performance in polar or charged systems.

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For the reproducible analysis of peptides by mass spectrometry-based proteomics, data-independent acquisition (DIA) and parallel/multiple reaction monitoring (PRM/MRM) deliver unrivalled performance with respect to sensitivity and reproducibility. Both approaches, however, come with distinct advantages and shortcomings. While DIA enables unbiased whole proteome analysis, it shows limitations with respect to dynamic range and the quantification of low-abundant proteins.

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Field monitoring plays a crucial role in understanding insect dynamics within ecosystems. It facilitates pest distribution assessment, control measure evaluation, and prediction of pest outbreaks. Additionally, it provides important information on bioindicators with which the state of biodiversity and ecological integrity in specific habitats and ecosystems can be accurately assessed.

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Fieldwork, examination of herbarium specimens and photographic images, supported by molecular sequencing have resulted in the re-interpretation of a number of species of L. found in Ecuador and the recognition of four new species. Standl.

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Alzheimer's disease-specific transcriptomic and epigenomic changes in the tryptophan catabolic pathway.

Alzheimers Res Ther

November 2024

Department of Psychiatry and Neuropsychology, Faculty of Health, Medicine and Life Sciences (FHML), Mental Health and Neuroscience Research Institute (MHeNs) and European Graduate School of Neuroscience (EURON), Maastricht University, Maastricht, 6211 LK, the Netherlands.

Background: Neurodegenerative disorders, including Alzheimer's disease (AD), have been linked to alterations in tryptophan (TRP) metabolism. However, no studies to date have systematically explored changes in the TRP pathway at both transcriptional and epigenetic levels. This study aimed to investigate transcriptomic, DNA methylomic (5mC) and hydroxymethylomic (5hmC) changes within genes involved in the TRP and nicotinamide adenine dinucleotide (NAD) pathways in AD, using three independent cohorts.

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Article Synopsis
  • Successful interspecies hybridization requires a stable "2n" chromosome set to produce viable "n" gametes, often achieved by doubling chromosome numbers or through rare recombination events.
  • In a study of third-generation hybrids resulting from a cross between Brassica juncea and B. napus, chromosome numbers varied significantly, indicating a complex genome structure influenced by unreduced gametes.
  • The research found a higher frequency of unreduced gametes in the hybrids compared to the parent species, suggesting this mechanism is crucial for stabilizing and increasing fertility in hybrid offspring.
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Objectives: The aim of this study is to assess the clinical outcome and mid-term efficacy of ultrasound-guided high-intensity focused ultrasound (USgHIFU) as a treatment for symptomatic uterine fibroids at two major European HIFU centers.

Materials And Methods: This bi-center longitudinal clinical study involved the treatment of 100 patients with symptomatic uterine fibroids using USgHIFU (n = 59 in Germany, n = 41 in Bulgaria). Clinical outcomes were evaluated at 6 weeks, 6 months, and 1 year follow-up utilizing the uterine fibroid symptoms-quality of life questionnaire for fibroid-related symptoms and health-related quality of life as well as MRI imaging for determining the fibroid volume.

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A fast thermal desorption unit for micro thermal desorption tubes, Part II: Method development and validation for explosives and chemical warfare agent simulants.

J Chromatogr A

January 2025

Institute of Nutritional and Food Sciences, University of Bonn, Friedrich-Hirzebruch Allee 5, D-53115 Bonn, Germany; HyperChrom Deutschland GmbH, Konrad-Zuse-Strasse 3, 53347 Alfter, Germany. Electronic address:

A thermal desorption FF-TG-GC/MS method with a cycle time of just 164s including cryofocusing, thermal desorption, analyte separation and system cool down was developed for the analysis of ten explosives and six chemical warfare agent (CWA) simulants. Sampling was carried out both in liquid and gaseous form using micro thermal desorption tubes (μTD-tubes, 1.4mm I.

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The role of individual and environmental socio-economic resources for cognitive change in very old age.

Soc Sci Med

January 2025

Cologne Center for Ethics, Rights, Economics and Social Sciences of Health, University of Cologne, Germany.

Objectives: Very old adults aged 80+ years old belong to the fastest growing population segment in many countries. Nevertheless, this age group is often underrepresented in studies of cognitive aging. The goal of this study was to examine individual and environmental socio-economic resources as correlates of cognitive aging in very old age.

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An engineered cereblon optimized for high throughput screening and molecular glue discovery.

Cell Chem Biol

November 2024

Institute of Biochemistry II, Medical Faculty, Goethe-University, Frankfurt am Main and Buchmann Institute for Molecular Life Sciences, Frankfurt am Main, Germany; Max Planck Institute of Biophysics, Max-von-Laue-Strasse 3, 60439 Frankfurt am Main, Germany. Electronic address:

Article Synopsis
  • The study focuses on improving the understanding and identification of molecular glue substrates related to the E3 ligase receptor cereblon (CRBN), commonly used in clinical degraders.* -
  • Researchers engineered human CRBN constructs for efficient production in E. coli, achieving a balance between high binding activity and production ease.* -
  • The team developed an "Enamine focused IMiD library" for high-throughput screening, successfully identifying effective binders and laying the groundwork for future CRBN glue discoveries.*
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Autism spectrum disorders (ASD) have a complex pathogenesis thought to include both genetic and extrinsic factors. Among the latter, inflammation of the developing brain has recently gained growing attention. However, how genetic predisposition and inflammation might converge to precipitate autistic behavior remains elusive.

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Context-dependency of the REM sleep behavior disorder screening questionnaire - Clinical utility under scrutiny.

Parkinsonism Relat Disord

January 2025

Cognitive Neuroscience, Institute for Neuroscience and Medicine, INM-3, Research Centre Juelich, Juelich, Germany; Medical Psychology | Neuropsychology and Gender Studies, Center for Neuropsychological Diagnostics and Intervention (CeNDI), Faculty of Medicine and University Hospital Cologne, University of Cologne, Cologne, Germany. Electronic address:

Introduction: The REM Sleep Behavior Disorder (RBD) Screening Questionnaire (RBDSQ) is a widely established screening tool for detecting isolated RBD (iRBD). However, its accuracy may depend on its application context, e.g.

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Purpose: Prophylactic insertion of an external ventricular drainage (EVD) prior to the resection of posterior fossa metastases (PFMs) is a common approach to address postoperative transient and permanent hydrocephalus. However, predicting surgery-related hydrocephalus in the preoperative phase continues to be a challenge. This study aims to analyze the incidence, preoperatively collectable risk factors and necessity of perioperative external ventricular drainage placement after posterior fossa metastasis surgery.

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