7,723 results match your criteria: ""Christian-Albrechts" University[Affiliation]"

Morphological Evidence for a Unique Neuromuscular Functional Unit of the Human Vocalis Muscle.

Int J Mol Sci

November 2024

Institute of Functional and Clinical Anatomy, Friedrich-Alexander-Universität Erlangen-Nürnberg, Universitätstraße 19, 91054 Erlangen, Germany.

Human vocalization is a complex process that is still only partially understood. Previous studies have suggested the possibility of a localized neuromuscular network of the larynx. Here we investigate this structure in human dissection specimens using multiple immunofluorescence and transmission electron microscopy (TEM).

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Background: Bacteriophages are known modulators of community composition and activity in environmental and host-associated microbiomes. However, the impact single phages have on bacterial community dynamics under viral predation, the extent and duration of their effect, are not completely understood. In this study, we combine morphological and genomic characterization of a novel marine phage, isolated from the Baltic sponge Halichondria panicea, and report on first attempts of controlled phage-manipulation of natural sponge-associated microbiomes.

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The Temporomandibular Joint and the Human Body: A New Perspective on Cross Talk.

Dent J (Basel)

November 2024

Stem Cells and Tissue Engineering Research Group, Faculty of Dentistry, Cairo University, Cairo 11435, Egypt.

As a unique joint that facilitates the articulation of the upper and lower jaws, the temporomandibular joint (TMJ) is concerned with several critical functions, such as speech and mastication. Pain that can become incapacitating is a result of temporomandibular disorders (TMDs), which are complex disorders affecting the masticatory muscles and the TMJ. Several anomalies and TMDs have an interdisciplinary relationship.

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  • Glycosylation is crucial for modifying lipids and sorting proteins, with its regulation involving a unique distribution of enzymes in the Golgi and the action of SPPL3.
  • In cells lacking the retention factor LYSET/TMEM251, there is increased secretion of a Golgi protein, B4GALT5, due to disrupted M6P tagging, which typically marks proteins for lysosomal degradation.
  • The study reveals that GOLPH3 and GOLPH3L adaptors play a critical role in stabilizing the LYSET-GNPT complex, maintaining proper Golgi function, and ensuring efficient lysosomal enzyme processing.
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  • A study was conducted on 44 male soldiers undergoing an 84-day combat-swimmer training (CST) to analyze changes in resting metabolic rate (RMR) and see if they support the 'constrained model' of metabolism.
  • Participants showed improved oxygen uptake (VO) and exercise efficiency during training, but there was significant variability in how RMR changed, with no significant overall difference between those who completed training and those who dropped out.
  • Despite some soldiers losing fat mass (FM) and gaining fat-free mass (FFM), baseline fitness levels (VO) were linked to success rates in the training, highlighting that individuals responded differently to the physical demands of CST.
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  • Carriers of BRCA1/2 pathogenic variants were studied to determine their risk of developing cancers during childhood, adolescence, and young adulthood (CAYA).
  • Analysis of data from over 47,000 individuals revealed that while young women with BRCA1/2 mutations had a significantly increased risk of breast cancer in their 20s, no increased risk was found for other types of CAYA cancers.
  • The study concluded that there's little evidence to support routine genetic testing for children of BRCA1/2 carriers or for young cancer patients, as the overall cancer risk appears low aside from breast cancer in young women.
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  • Understanding pathogen resistance genes, especially NLRs, in Solanum chilense requires looking at factors that influence gene gain and loss, which is detailed in a new reference genome study.
  • The study reveals that variations in NLR loci across 20 populations show higher within-population diversity than between-population diversity, linking NLR diversity to population dynamics rather than environmental factors.
  • Findings indicate that genetic drift and demographic history, along with some weak selection for local adaptation, significantly influence the evolution of NLRs in this plant species.
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In recent years, extensive research on noble metal-TiO nanocomposites has demonstrated their crucial role in various applications such as water splitting, self-cleaning, CO reduction, and wastewater treatment. The structure of the noble metal-TiO nanocomposites is critical in determining their photocatalytic properties. Numerous studies in the literature describe the preparation of these nanocomposites with various shapes and sizes to achieve tunable photocatalytic performance.

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Experimental and Theoretical Insights on Gas Trapping of Noble Gases in MFU-4-Type Metal-Organic Frameworks.

Chemistry

November 2024

Chair of Solid State and Materials Chemistry, Institute of Physics, University of Augsburg, Universitätsstraße 1, 86159, Augsburg, Germany.

Isostructural metal-organic frameworks (MOFs), namely MFU-4 and MFU-4-Br, in which the pore apertures are defined by anionic side ligands (Cl and Br, respectively), were synthesized and loaded with noble gases. By selecting the type of side ligand, one can fine-tune the pore aperture size, allowing for precise regulation of the entry and release of gas guests. In this study, we conducted experiments to examine gas loading and release using krypton and xenon as model gases, and we complemented our findings with computational modeling.

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The molecular structure of a ferrocene derivative with adjacent centers of chirality, 1,1'-bis(tert-butylphosphino)ferrocene, has been examined in the gas phase using broadband microwave spectroscopy under the isolated and cold conditions of a supersonic jet. The diastereomers of 1,1'-bis(tert-butylphosphino)ferrocene can adopt homo- and hetero-chiral configurations, owing to the P-chiral substituents on the cyclopentadienyl rings. Moreover, the internal ring rotation of each diastereomer gives rise to four conformers with eclipsed ring arrangements, where the two tert-butylphosphino groups were separated by dihedral angles of approximately 72°, 144°, 216°, and 288° with respect to the two ring centers.

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All organisms use limited energy to grow, survive, and reproduce, necessitating energy allocation tradeoffs, but there is debate over how selection impacted metabolic budgets and tradeoffs in primates, including humans. Here, we develop a method to compare metabolic rates as quotients of observed relative to expected values for mammals corrected for size, body composition, environmental temperature, and phylogenetic relatedness. Contrary to previous analyses, these quotients reveal that nonhuman primates have total metabolic rates expected for similar-sized mammals in similar environments.

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Article Synopsis
  • - The SARS-CoV-2 pandemic has led to 762 million infections globally, with about 10% of those infected experiencing long-term effects known as post-COVID condition, impacting at least one million people in Germany alone.
  • - Symptoms of post-COVID condition vary widely, affecting 10-30% of outpatients and 50-70% of hospitalized patients, with only 13% of those infected reporting complete recovery.
  • - Hyperbaric oxygen therapy (HBOT) has been used for various medical issues since 1957 and shows promise in improving oxygen delivery and reducing inflammation, with initial studies indicating beneficial effects on cognitive function and symptoms following COVID-19.
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The gut microbiota influences multiple aspects of human health and disease. Several studies have indicated an association between the gut microbiota and response to immune checkpoint inhibitors in various cancers, but there is scarce data from breast cancer. The randomized ALICE trial demonstrated improved progression-free survival (PFS) from adding the programmed cell death 1 ligand 1 (PD-L1) inhibitor atezolizumab (atezo) to immunomodulating chemotherapy (chemo) in metastatic triple-negative breast cancer (mTNBC), even for PD-L1 disease.

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Purpose: Wound healing disorders caused by bacterial infections in dental surgery, especially where membranes are used, are a common issue in oral surgery. Cold atmospheric plasma (CAP) offers a non-invasive solution for surface decontamination, including dental implants. The aim of this study was to evaluate the antibacterial effectiveness of CAP on various clinically applied membranes made of collagen and polytetrafluoroethylene (PTFE).

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Electroencephalography based delirium screening in acute supratentorial stroke.

BMC Neurol

November 2024

Department of Neurology, Christian-Albrechts-University, University Hospital Schleswig-Holstein, Arnold-Heller-Straße 3, 24105, Kiel, Germany.

Background: Up to 25% of patients suffering from an acute stroke are diagnosed with delirium during the hospital stay, with older age increasing the risk. Generalized slowing in the electroencephalogram (EEG) supports the diagnosis of delirium. We examined the potential of single-channel EEG (DeltaScan) as an easy-to-use device on intensive care units for detecting delirium.

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Background: Following the pivotal phase II trial BOLT, the Hedgehog (Hh) inhibitor sonidegib was approved in the EU to treat locally advanced basal cell carcinoma (laBCC) in patients not amenable to surgery or radiotherapy. We report safety data from the interim analysis of the real-world NISSO study.

Methods: NISSO is an ongoing non-interventional, multinational, post-authorization safety study (NCT04066504).

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A maternal high-fat diet predisposes to infant lung disease via increased neutrophil-mediated IL-6 trans-signaling.

Cell Rep

November 2024

QIMR Berghofer Medical Research Institute, Herston, QLD 4006, Australia; School of Biomedical Sciences, Faculty of Medicine, The University of Queensland, QLD 4072, Australia; School of Biomedical Sciences, Faculty of Health, Queensland University of Technology, QLD 4000, Australia; Australian Infectious Diseases Research Centre, The University of Queensland, QLD 4072, Australia. Electronic address:

A poor maternal diet during pregnancy predisposes the infant to severe lower respiratory tract infections (sLRIs), which, in turn, increases childhood asthma risk; however, the underlying mechanisms remain poorly understood. Here, we show that the offspring of high-fat diet (HFD)-fed mothers (HFD-reared pups) developed an sLRI following pneumovirus inoculation in early life and subsequent asthma in later life upon allergen exposure. Prior to infection, HFD-reared pups developed microbial dysbiosis and low-grade systemic inflammation (LGSI), characterized by hyperneutropoiesis in the liver and elevated inflammatory cytokine expression, most notably granulocyte-colony stimulating factor (G-CSF), interleukin-17A (IL-17A), IL-6 and soluble IL-6 receptor (sIL-6R) (indicative of IL-6 trans-signaling) in the circulation and multiple organs but most prominently the liver.

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Cover cropping is an effective method to protect agricultural soils from erosion, promote nutrient and moisture retention, encourage beneficial microbial activity, and maintain soil structure. Re-utilization of winter cover crop root channels by maize roots during summer allows the cash crop to extract resources from distal regions in the soil horizon. In this study, we investigated how cover cropping during winter followed by maize ( L.

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Compiling a versatile toolbox for inducible gene expression in .

Microlife

October 2024

Institute for General Microbiology, Christian-Albrechts-University, Am Botanischen Garten 1-9, 24118 Kiel, Germany.

is a model organism, providing a platform to explore methanoarchaeal regulation mechanisms on the transcriptional and translational level. This study investigates and evaluates various molecular tools to allow inducible gene expression in . (i) The TetR/TetO system was utilized to induce expression of a designed antisense RNA directed against sRNA allowing to increase transcripts of asRNA (500-fold), resulting in a significant decrease of sRNA levels (tetracycline-induced knockdown mutant).

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Perception and processing of stress signals by plant mitochondria.

Plant J

December 2024

Plant Biotechnology, Faculty of Biology, University of Bielefeld, Bielefeld, D-33615, Germany.

In the course of their life, plants continuously experience a wide range of unfavourable environmental conditions in the form of biotic and abiotic stress factors. The perception of stress via various organelles and rapid, tailored cellular responses are essential for the establishment of plant stress resilience. Mitochondria as the biosynthetic sites of energy equivalents in the form of ATP-provided in order to enable a multitude of biological processes in the cell-are often directly impacted by external stress factors.

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Background: Humans are subjected to various environmental stressors (bacteria, viruses, pollution) throughout life. As such, an inherent relationship exists between the effect of these exposures with age. The impact of these environmental stressors can manifest through DNA methylation (DNAm).

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Distinct Genetic Risk Profile in Aortic Stenosis Compared With Coronary Artery Disease.

JAMA Cardiol

November 2024

Technical University of Munich, School of Medicine and Health, Department of Cardiovascular Diseases, German Heart Centre Munich, TUM University Hospital, Munich, Germany.

Importance: Aortic stenosis (AS) and coronary artery disease (CAD) frequently coexist. However, it is unknown which genetic and cardiovascular risk factors might be AS-specific and which could be shared between AS and CAD.

Objective: To identify genetic risk loci and cardiovascular risk factors with AS-specific associations.

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Article Synopsis
  • The European flat oyster, a vital part of marine ecosystems and a key economic resource, has seen its habitats drastically decline, leading to functional extinction.
  • Recent studies compiled data from 1524 to 2022 to reveal past locations and extents of flat oyster fisheries and reefs, highlighting where these ecosystems once thrived.
  • These datasets aim to support flat oyster restoration efforts and improve adaptive management strategies while helping recover overlooked histories of ocean ecosystem changes caused by human activities.
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Purpose: To determine whether periprosthetic drain insertion for hernioplasty using sublay mesh augmentation influences retromuscular fluid collections (RFC) and the clinical course.

Methods: Forty-two patients with open repair of midline hernias (M2-4, W1, European Hernia Society classification) were allocated to groups with or without retromuscular drains. Subcutaneous drainages were used in both groups to avoid confounding from surgical site occurrences due to superficial, subcutaneous fluid collections.

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Influence of the preparation design on the retentive strength of resin-bonded attachments.

Clin Oral Investig

November 2024

Department of Prosthodontics, Propaedeutics and Dental Materials, School of Dentistry, Christian-Albrechts University at Kiel, Arnold-Heller-Straße 16, 24105, Kiel, Germany.

Objectives: The study investigated the influence of retention grooves and material thickness of the retainer wing on the retentive strength of resin-bonded attachments (RBAs).

Materials And Methods: Sixty-four extracted human molars were used. Each tooth received a preparation limited to the enamel for the retainer wings of the RBAs.

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