19,422 results match your criteria: "Johannes Gutenberg - University[Affiliation]"

Managing anxiety and behavior during pediatric dental procedures is challenging. This study examines the effects of combining ibuprofen with midazolam sedation using both behavioral management and clinical hypnosis to improve patient cooperation and reduce post-treatment pain. A retrospective cohort study of 311 children (mean age 74.

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Synthetic cannabinoids (SCs) are one of the largest groups of new psychoactive substances (NPSs). However, the relationship between their chemical structure and the affinity to human CB receptors (hCB), which mediates their psychotropic activity, is not well understood. Herein, the synthesis of the 2-, 4-, 5-, 6- and 7-chloroindole analogues of the synthetic cannabimimetic MDMB-CHMICA, along with their analytical characterization via ultraviolet-visible (UV/VIS), infrared (IR), nuclear magnetic resonance (NMR) spectroscopy, and mass spectrometry, is described.

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The protein SANS is a small multifunctional scaffold protein. It is involved in several different cellular processes, such as intracellular transport, in the cytoplasm, or splicing of pre-mRNA, in the cell nucleus. Here, we aimed to gain insight into the regulation of the subcellular localization and the nuclear-cytoplasmic shuttling of SANS and its paralog ANKS4B, not yet reported in the nucleus.

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Article Synopsis
  • This study compares the effectiveness of second-generation autologous platelet concentrate, Platelet-Rich Fibrin (PRF), with first-generation Platelet-Rich Plasma (PRP) in promoting wound healing through various biological assessments.
  • It was found that PRF contains a higher concentration of leukocytes and has a more favorable effect on macrophage polarization, which is crucial for reducing inflammation and promoting healing.
  • Additionally, PRF demonstrated superior pro-angiogenic potential, evidenced by increased neo-vessel formation and branching in vivo, making it a better option for regenerative medicine applications than PRP.
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Background: As ultrasound is one of the most utilized imaging procedures in clinical practice in Germany, its integration into undergraduate medical education is imperative. Thereby, the limited availability of qualified instructors is a major challenge. Peer tutors, who are trained to instruct their peers collaboratively, could resolve staff constraints.

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Aims: Right ventricular reverse remodelling (RVRR) is linked to improved survival in patients with severe tricuspid regurgitation (TR) and right-sided heart failure who underwent interventional treatment. However, the role of residual TR on RVRR remains unclear. In this analysis the impact of residual TR on RVRR after interventional TR treatment, which was validated by two independent cohorts at four sites using echocardiography or cardiac magnetic resonance (CMR) imaging, was investigated.

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Human population dynamics and their drivers are not well understood, especially over the long term and on large scales. Here, we estimate demographic growth trajectories from 9 to 3 ka BP across the entire globe by employing summed probability distributions of radiocarbon dates. Our reconstruction reveals multicentennial growth cycles on all six inhabited continents, which exhibited matching dominant frequencies and phase relations.

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Objectives: The present study aimed to investigate a possible immunomodulatory role of the periodontopathogen Filifactor alocis through the antimicrobial peptide hBD-2 on the expression of chemokines in human gingival keratinocytes.

Materials And Methods: Cells were cultured in the presence or absence of periodontopathogenic bacteria, such as F. alocis, Aggregatibacter actinomycetemcomitans, Porphyromonas gingivalis, and Treponema denticola, to evaluate the regulation of hBD-2, CXCL8 and CCL20.

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Essential tremor (ET) is one of the most common movement disorders in adults. Deep brain stimulation (DBS) of the ventralis intermediate nucleus (VIM) of the thalamus and/or the posterior subthalamic area (PSA) has been shown to provide significant tremor suppression in patients with ET, but with significant inter-patient variability and habituation to the stimulation. Several non-invasive neuromodulation techniques targeting other parts of the central nervous system, including cerebellar, motor cortex, or peripheral nerves, have also been developed for treating ET, but the clinical outcomes remain inconsistent.

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Dendritic cells (DCs) are present in almost all tissues, where they act as sentinels involved in innate recognition and the initiation of adaptive immune responses. The DC family consists of several cell lineages that are heterogenous in their development, phenotype, and function. Within these DC lineages, further subdivisions exist, resulting in smaller, less characterized subpopulations, each with its unique immunomodulatory capabilities.

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A Direct Chemical Repair of Etheno-Type RNA Damages.

Angew Chem Int Ed Engl

January 2025

Beijing National Laboratory for Molecular Sciences (BNLMS), CAS Key Laboratory of Molecular Recognition and Function, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China (L.C.

Etheno damages in RNA represent a unique class of structural alterations that arise from exposure to various environmental stressors or endogenous processes. They significantly distort the RNA structure and affect crucial biological functions, including RNA-protein interactions, ribosome function, and translation fidelity. However, repair mechanisms for those etheno damages in RNA are still being elucidated.

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Increased Disability Progression in rs10191329 Carriers with Multiple Sclerosis Is Preceded by Neurofilament Light Chain Elevations.

Ann Neurol

November 2024

Department of Neurology, Research Center for Immunotherapy (FZI) and Focus Program Translational Neuroscience (FTN), Rhine-Main Neuroscience Network (rmn2), University Medical Center of the Johannes Gutenberg University Mainz, Mainz, Germany.

Objective: We examined the impact of the rs10191329 genetic risk variant on neuroaxonal damage as measured by serum neurofilament light chain (sNfL) levels, and disability progression in people with multiple sclerosis (pwMS).

Methods: In a cohort of pwMS (n = 740), 658 participants were prospectively monitored every 2 years for less than a decade while 82 of 740 pwMS were monitored retrospectively for up to 40 years. We investigated associations between rs10191329 variants and clinical outcome, including Expanded Disability Status Scale (EDSS), disability accrual (defined by EDSS-increase of at least 1.

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Increased incidence rates for childhood leukaemia have been reported in municipalities close to the nuclear power plant (NPP) Krümmel (Geesthacht, Germany). Methodological challenges arise when analysing this association at ecological level. They include the use of an appropriate reference population, unstable estimates of standardised incidence ratios (SIRs), and the potential role of prevailing winds.

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Article Synopsis
  • * There were five in-hospital deaths among ICU patients (3.5% fatality rate) compared to three in non-ICU patients (0.1%), indicating significantly higher risks for those admitted to ICUs.
  • * Significant factors leading to ICU admission included obesity, diabetes, pneumonia, ARDS, and other comorbidities, highlighting the importance of existing health conditions in pediatric COVID-19 cases.
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Mycobacterium tuberculosis is a lethal human pathogen, with the key flavoenzyme for catalyzing bacterial cell-wall biosynthesis, decaprenylphosphoryl-D-ribose oxidase (DprE1), considered an Achilles heal for tuberculosis (TB) progression. Inhibition of DprE1 blocks cell wall biosynthesis and is a highly promising antitubercular target. Macozinone (PBTZ169, a benzothiazinone (BTZ) derivative) is an irreversible DprE1 inhibitor that has attracted considerable attention because it exhibits an additive activity when combined with other anti-TB drugs.

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Article Synopsis
  • The study aimed to determine if a dilatation of the common bile duct (CBD) can be seen in postmortem CT scans of individuals who died from opiate/opioid intoxication and if this dilatation can also be measured for other drug groups.* -
  • Researchers analyzed 125 cases of lethal intoxication using postmortem CT and compared them to 88 control cases without toxic substances, finding a significant difference in CBD diameters between the intoxication group and controls.* -
  • The results showed that only opiate and opioid cases had a significantly wider CBD, suggesting dilatation may indicate lethal opioid intoxication, but this should be considered alongside other evidence in postmortem investigations.*
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Background: Children with chronic illness perform poorer at school, and school well-being (SWB) may mediate this association. We investigated the association between chronic illness and three domains of SWB in children in first grade.

Methods: Data from a German population-based prospective cohort study were used.

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A machine learning approach to fill gaps in dendrometer data.

Trees (Berl West)

October 2024

Department of Geography, Johannes Gutenberg University, Johann-Joachim-Becher Weg 32, 55128 Mainz, Germany.

Key Message: The machine learning algorithm extreme gradient boosting can be employed to address the issue of long data gaps in individual trees, without the need for additional tree-growth data or climatic variables.

Abstract: The susceptibility of dendrometer devices to technical failures often makes time-series analyses challenging. Resulting data gaps decrease sample size and complicate time-series comparison and integration.

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Background: The concept of calcar-guided short-stem THA (ssTHA) has largely emerged over the last decade, especially in Europe, and today modern calcar-guided short stems are among the most successful primary femoral implants in terms of complications and revision rates as indicated by multiple registry data. The philosophy originally comprised an individualised reconstruction of the hip anatomy by following the calcar of the femoral neck providing bone- and soft-tissue-sparing characteristics. However, as the stem design allows either metaphyseal fixation alone or additional diaphyseal anchoring, depending on the stem alignment and indication, distinct knowledge is required regarding the implantation technique, the broad variation of positioning and fixation and its potential clinical consequences.

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Purpose: Colorectal cancer is one of the most common and deadliest cancer types worldwide. In the last years, changes in the mitochondrial DNA (mtDNA) copy number have been described to correlate with the prognostic outcome for colorectal cancer patients by impacting different tumorigenic properties. One key regulator of mtDNA is the mitochondrial transcription factor A (TFAM) that acts as a limiting factor of mtDNA copy number.

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Transcatheter Tricuspid Valve Replacement.

J Am Coll Cardiol

January 2025

Department of Cardiology Bern University Hospital, Inselspital, University of Berne, Berne, Switzerland. Electronic address: https://twitter.com/FabienPraz.

Transcatheter tricuspid valve replacement (TTVR) has emerged as a promising intervention for the treatment of severe tricuspid regurgitation with complex valve morphology. This consensus document provides a comprehensive overview of the current state of orthotopic TTVR, focusing on patient selection, procedural details, and follow-up care. Clinical outcomes from initial studies and compassionate use cases are discussed, highlighting the effectiveness of TTVR in reducing tricuspid regurgitation, inducing reverse right ventricular remodeling, and enhancing patients' quality of life.

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Intra-individual radiomic analysis of pericoronary adipose tissue: Photon-counting detector vs energy-integrating detector CT angiography.

Int J Cardiol

February 2025

Department of Radiology and Radiological Science, Medical University of South Carolina, Charleston, SC, USA; Department of Medical Surgical Sciences and Translational Medicine, Sapienza University of Rome, Italy. Electronic address:

Background: The impact of novel photon-counting detector (PCD)-CT technology on in-vivo radiomics is not fully understood. This study aimed to compare the intra-individual stability and reproducibility of pericoronary adipose tissue (PCAT) radiomic features between PCD-CT and energy-integrating detector (EID)-CT in patients undergoing coronary CT angiography (CCTA) on both systems.

Methods: Patients undergoing clinically indicated CCTA on an EID-CT were prospectively enrolled for research PCD-CCTA within 30 days.

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Background: Noise exposure and lower socioeconomic status (SES) are both independently linked to increased cardiovascular disease (CVD) risk. Although these factors frequently coexist, their combined impact and the underlying pathophysiological mechanisms remain poorly understood.

Objectives: This study aimed to evaluate the joint effects of high transportation noise exposure and lower SES on major adverse cardiovascular events (MACE) and the role of the neural-arterial axis in mediating this relationship.

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m6A sites in the coding region trigger translation-dependent mRNA decay.

Mol Cell

December 2024

Theodor Boveri Institute, Biocenter, University of Würzburg, Am Hubland, 97074 Würzburg, Germany; Institute of Molecular Biology (IMB), 55128 Mainz, Germany. Electronic address:

N-Methyladenosine (m6A) is the predominant internal RNA modification in eukaryotic messenger RNAs (mRNAs) and plays a crucial role in mRNA stability. Here, using human cells, we reveal that m6A sites in the coding sequence (CDS) trigger CDS-m6A decay (CMD), a pathway that is distinct from previously reported m6A-dependent degradation mechanisms. Importantly, CDS m6A sites act considerably faster and more efficiently than those in the 3' untranslated region, which to date have been considered the main effectors.

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Article Synopsis
  • Axions are theoretical particles that might explain dark matter and a specific physics problem (strong CP problem), and this study investigates their interactions using ^{129}Xe gas and Rb vapor.
  • The method used enhances the detection sensitivity for these axion interactions by 145 times compared to traditional approaches through magnetic amplification and effective field exploitation.
  • The research led to significant improvements in constraints on interactions related to axions, expanding the search for these particles and their potential links to dark matter, with implications for future investigations in this field.
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