10,092 results match your criteria: "University of Goettingen; Germany.[Affiliation]"

Background/aim: The serine proteinase inhibitor 1 (SERPINE1) gene codes for the plasminogen activator inhibitor 1 (PAI1) protein and is thought to play a tumor supportive role in various cancers. In this work we aimed to uncover the role PAI1 plays in the proliferation, migration, and invasion of vulvar cancer (VC), and define the protein's function as an oncogene or tumor suppressor.

Materials And Methods: Through treatment with an agonist (G1) and antagonist (G36) of G-coupled estrogen receptor 1 (GPER1), an upstream regulator of SERPINE1 expression, and a forward transfection knockdown protocol, the expression of SERPINE1/PAI1 in VC cells was altered.

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Tensile and Bending Strength of Birch and Beech Lamellas Finger Jointed with Conventional and Newly Developed Finger-Joint Profiles.

Materials (Basel)

October 2024

Wood Biology and Wood Products, Faculty of Forest Sciences and Forest Ecology, University of Goettingen, Buesgenweg 4, 37077 Goettingen, Germany.

In this study, the tensile and bending strength of birch and beech lamellas finger jointed with conventional () and newly developed finger-joint profiles () are presented. Polyurethane (PUR), Melamine-Urea-Formaldehyde (MUF) and Phenol-Resorcinol-Formaldehyde (PRF) adhesive systems were used to bond the finger joints. The objective of the profiles was to reduce the stress concentrations within the finger joint by cutting the cross-grooved fingers perpendicular to the main orientation of the finger-joint profile.

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Methamphetamine-induced cardiotoxicity: in search of protective transcriptional mechanisms.

Herz

December 2024

Department of Psychosomatic Medicine and Psychotherapy, University of Göttingen, Waldweg 33, 37073, Göttingen, Germany.

Crystalline methamphetamine hydrochloride is an illegal drug with a high addictive potential, better known by its colloquial name "ice" or "crystal meth". The abuse of this drug has led to significant health problems worldwide. Like other amphetamine-type stimulants, chronic consumption of methamphetamine leads to direct toxic effects on the central nervous system, causing cognitive impairment, depressive behavior, and other severe neurological or psychiatric symptoms.

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Analysis of mitochondrial translation using click chemistry.

Methods Enzymol

October 2024

Institute for Cellular Biochemistry, University Medical Center Goettingen, Goettingen, Germany. Electronic address:

Mitochondria contain their own gene expression machinery, which synthesizes core subunits of the oxidative phosphorylation system. Monitoring mitochondrial translation within spatial compartments of cells is difficult. Here we describe a method to visualize mitochondrial translation within defined parts of cells, using a click chemistry approach.

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In organello silencing of mitochondrial gene expression.

Methods Enzymol

October 2024

Department of Cellular Biochemistry, University Medical Center Göttingen, Göttingen, Germany. Electronic address:

Mitochondria contain proteins from two genetic origins. Most mitochondrial proteins are encoded in the nuclear genome, translated in the cytosol, and subsequently imported into the different mitochondrial sub-compartments. A small number is encoded in the mitochondrial DNA (mtDNA).

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A retrospective cohort analysis of factors influencing continuous antibiotic therapy with ampicillin.

Life Sci

December 2024

Clinic for Anesthesiology, University Medical Center Göttingen, Robert Koch-Straße 40, 37075 Göttingen, Germany. Electronic address:

Aims: There are limited data on ampicillin/sulbactam, both for continuous infusion and for use in critically ill patients. We aimed to identify factors that help predict ampicillin plasma levels during continuous antibiotic therapy in intensive care patients.

Main Methods: We retrospectively reviewed and retrieved a large dataset of patients who received continuous ampicillin infusion with therapeutic drug monitoring between 2015 and 2022.

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CoCoPyE: feature engineering for learning and prediction of genome quality indices.

Gigascience

January 2024

Department of Applied Bioinformatics, Institute of Microbiology and Genetics, University of Goettingen, Goldschmidtstr. 1, 37077 Goettingen, Germany.

Article Synopsis
  • The study focuses on the advancements in reconstructing microbial genomes from metagenomic data and highlights the variability in data quality that needs assessment.
  • The authors introduced a new tool called CoCoPyE, which utilizes a two-stage process to accurately predict genome quality by identifying genomic markers and refining estimates with machine learning.
  • CoCoPyE outperformed existing tools in accuracy during simulations and provides both a web server and Python implementation for easy integration into genome analysis workflows.
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With ongoing global warming, increasing water deficits promote physiological stress on forest ecosystems with negative impacts on tree growth, vitality, and survival. How individual tree species will react to increased drought stress is therefore a key research question to address for carbon accounting and the development of climate change mitigation strategies. Recent tree-ring studies have shown that trees at higher latitudes will benefit from warmer temperatures, yet this is likely highly species-dependent and less well-known for more temperate tree species.

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Background: Multiple Sulfatase Deficiency (MSD) is an ultra-rare autosomal recessive disorder characterized by deficient enzymatic activity of all known sulfatases. MSD patients frequently carry two loss of function mutations in the SUMF1 gene, encoding a formylglycine-generating enzyme (FGE) that activates 17 different sulfatases. MSD patients show common features of other lysosomal diseases like mucopolysaccharidosis and metachromatic leukodystrophy, including neurologic impairments, developmental delay, and visceromegaly.

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What to expect, when you expect. The neurosurgical perspective.

J Clin Neurosci

November 2024

Department of Neurosurgery, University Hospital of Larissa, Faculty of Medicine, School of Health Sciences, University of Thessaly, Larissa, Greece. Electronic address:

Article Synopsis
  • The study focuses on the experiences of women in neurosurgery who face challenges in balancing their careers with motherhood, particularly due to the timing of pregnancy coinciding with demanding training periods.
  • Through interviews with 21 women in varying stages of their neurosurgery careers, the research found that many feel social stigma around pregnancy and that support in the workplace tends to be more theoretical than practical.
  • The conclusion emphasizes the need for greater flexibility and support in the field to help women integrate their professional aspirations with family life, which is crucial for retaining talented professionals in neurosurgery.
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A new framework for SubtiWiki, the database for the model organism Bacillus subtilis.

Nucleic Acids Res

January 2025

Department of General Microbiology, Institute of Microbiology and Genetics, Georg-August University Göttingen, Grisebachstr. 8, D-37077 Göttingen, Germany.

Bacillus subtilis is a Gram-positive model bacterium and one of the most-studied and best understood organisms. The complex information resulting from its investigation is compiled in the database SubtiWiki (https://subtiwiki.uni-goettingen.

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Background: The Extended Focused Assessment with Sonography for Trauma (E-FAST) is a diagnostic ultrasound technique used in hospital and pre-hospital settings for patients with torso trauma. While E-FAST is common in emergency departments, its pre-hospital use is less routine. This study aims to establish a set of variables for designing studies on pre-hospital E-FAST through a Delphi consensus process involving international experts.

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Response of bacterial and fungal composition in tailings to Mn pollution.

J Hazard Mater

December 2024

National Engineering Laboratory for Applied Forest Ecological Technology in Southern China, College of Life and Environmental Sciences, Central South University of Forestry and Technology, Changsha, Hunan 410004, China. Electronic address:

Microorganisms are crucial for natural remediation of heavy metal pollution in mining areas. The regional survey and process analysis of Mn mine microbes is still limited. We investigated microbial species composition in tailings and adjacent soils of seven typical Mn mining areas in wet mid-subtropical China.

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Herein, we report the synthesis of a new sterically demanding hyper-coordinate phosphasilene (Mes*PSi(SiMe)(PhC(N Bu)) (1) and its unprecedented reactivity with metal carbonyls (M = Fe, Mo, W). The reaction of 1 with Fe(CO) involves the deoxygenative homocoupling of two CO molecules, forming a rare ketene (μ-CCO) inserted Fe complex 2. Contrastingly, reactions with M(CO) (M = Mo, W) entail the deoxygenated activation of one CO molecule, with the second CO molecule being trapped between Si and P atoms.

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The three-dimensional course of cranial development of very preterm infants during the first year of life.

Early Hum Dev

November 2024

Department of Paediatric Cardiology, Intensive Care Medicine and Neonatology, University Medical Centre, Robert-Koch-Straße 40, 37075 Göttingen, Germany. Electronic address:

Background: Cranial measurements are crucial for evaluating preterm general development because they are a surrogate tool for evaluating brain growth. Usually, they are based on tape-measured head circumference; however, a three-dimensional (3D) approach expands the diagnostic spectrum to the evaluation of cranial volume and shape.

Aims: Very preterm (vPT) infants face multiple risks and obstacles in their early development.

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Inorganic Carbon Pools and Their Drivers in Grassland and Desert Soils.

Glob Chang Biol

October 2024

State Key Laboratory of Herbage Improvement and Grassland Agro-Ecosystems (SKLHIGA), College of Ecology, Lanzhou University, Lanzhou, People's Republic of China.

Article Synopsis
  • * Research analyzed 6011 samples revealing that deserts and grasslands in northwestern China store significant amounts of SIC, surpassing their organic carbon stocks.
  • * The study identifies two main types of SIC: pedogenic carbonates in grasslands and lithogenic carbonates in deserts, emphasizing how natural acidification affects SIC levels, especially in grasslands.
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-Halogenated benzyl alcohol can exist in two different low energy chiral conformations, only one of them with an OH-X contact (X = Cl, Br, I). A third, achiral conformation is enabled by the halogen substitution. We show by IR spectroscopy in supersonic jets that the achiral monomer is less stable than the chiral conformation with OH-X contact, but both can be produced in similar amounts using helium as a carrier gas.

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Apolipoprotein E aggregation in microglia initiates Alzheimer's disease pathology by seeding β-amyloidosis.

Immunity

November 2024

Institute of Neuronal Cell Biology, Technical University Munich, Munich, Germany; German Center for Neurodegenerative Diseases (DZNE), Munich, Germany; Munich Cluster of Systems Neurology (SyNergy), Munich, Germany; Institute for Stroke and Dementia Research, University Hospital of Munich, LMU Munich, Munich, Germany. Electronic address:

The seeded growth of pathogenic protein aggregates underlies the pathogenesis of Alzheimer's disease (AD), but how this pathological cascade is initiated is not fully understood. Sporadic AD is linked genetically to apolipoprotein E (APOE) and other genes expressed in microglia related to immune, lipid, and endocytic functions. We generated a transgenic knockin mouse expressing HaloTag-tagged APOE and optimized experimental protocols for the biochemical purification of APOE, which enabled us to identify fibrillary aggregates of APOE in mice with amyloid-β (Aβ) amyloidosis and in human AD brain autopsies.

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Fission of double-membrane tubes under tension.

Biophys J

November 2024

Institute for Theoretical Physics, Georg-August University, Göttingen, Germany. Electronic address:

The division of a cellular compartment culminates with the scission of a highly constricted membrane neck. Scission requires lipid rearrangements, topology changes, and transient formation of nonbilayer intermediate structures driven by curvature stress. Often, a side effect of this stress is pore-formation, which may lead to content leakage and thus breaching of the membrane barrier function.

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Article Synopsis
  • Mandibular movement is influenced by individual variations in the temporomandibular joint (TMJ), necessitating a patient-centered approach in dental treatment that accounts for unique anatomy and condylar function.
  • This study introduced an automatic tracking algorithm for monitoring mandibular movement using real-time magnetic resonance imaging (rt-MRI), finding it to be significantly faster and more accurate than traditional manual tracking techniques.
  • Results indicated that the new least mean square registration (LMS) method was 76% quicker and had better alignment accuracy, suggesting it could enhance the objective assessment of TMJ function in clinical settings.
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The effect of past environmental changes on the demography and genetic diversity of natural populations remains a contentious issue and has rarely been investigated across multiple, phylogenetically distant species. Here, we perform comparative population genomic analyses and demographic inferences for seven widely distributed and ecologically contrasting European forest tree species based on concerted sampling of 164 populations across their natural ranges. For all seven species, the effective population size, N, increased or remained stable over many glacial cycles and up to 15 million years in the most extreme cases.

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A particle-filled hydrogel based on alginate and calcium phosphate nanoparticles as bone adhesive.

J Mater Sci Mater Med

October 2024

Inorganic Chemistry and Centre for Nanointegration Duisburg-Essen (CENIDE), University of Duisburg-Essen, Essen, Germany.

Article Synopsis
  • - The development of a nanoparticle-loaded hydrogel aims to address the clinical need for effective bone adhesives as alternatives to traditional surgical techniques, especially in challenging moist environments.
  • - This hydrogel combines silica-coated calcium phosphate and carboxymethyl cellulose nanoparticles with sodium alginate, creating a thixotropic paste that can quickly bond bone fragments in air and underwater, maintaining strong adhesion of about 84 kPa.
  • - Additionally, the hydrogel is made from biocompatible and biodegradable materials, showing good biocompatibility in cell culture tests, and effectively keeps bone fragments connected for over three months while submerged in water.
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Background: Postoperative continuous thoracic epidural analgesia (TEA) is an integral aspect of pain management after major abdominal and thoracic surgery. Under TEA, postoperative urinary retention (POUR) is frequently noted, prompting a common practice of maintaining the transurethral catheter (UC) until the cessation of TEA to avoid the necessity for reinsertion of the UC. This study analyzes the effect of an early bladder catheter removal during TEA on POUR incidence.

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Evaluating accession decisions in customs unions: a dynamic machine learning approach.

Int Econ Econ Policy

October 2024

Lero - the Irish Software Research Centre, School of Computer Science, National University of Ireland, Galway, Dublin Ireland.

Previous work in the literature on regional economic integration has proposed the use of machine learning algorithms to evaluate the composition of customs unions, specifically, to estimate the degree to which customs unions match "natural markets" arising from trade flow data or appear to be driven by other factors such as political considerations. This paper expands upon the static approaches used in previous studies to develop a dynamic framework that allows to evaluate not only the composition of customs unions at a given point in time, but also changes in the composition over time resulting from accessions of new member states. We then apply the dynamic algorithm to evaluate the evolution of the global landscape of customs unions using data on bilateral trade flows of 200 countries from 1958 to 2018.

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