Publications by authors named "Gregor M"

The most common primary malignancy of the liver, hepatocellular carcinoma (HCC), is a heterogeneous tumor entity with high metastatic potential and complex pathophysiology. Increasing evidence suggests that tissue mechanics plays a critical role in tumor onset and progression. Here, we show that plectin, a major cytoskeletal crosslinker protein, plays a crucial role in mechanical homeostasis and mechanosensitive oncogenic signaling that drives hepatocarcinogenesis.

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The rationale for combining ibrutinib and venetoclax (IV) in chronic lymphocytic leukemia (CLL) treatment lies in their complementary mechanisms of action. Studies investigating IV typically begin with a short initial course of ibrutinib, followed by venetoclax introduction for a limited duration, typically 12 months. SAKK34/17 (NCT03708003) is a single-arm, open-label, multicenter, phase 2 trial evaluating the effectiveness of a modified IV schedule in patients with relapsed/refractory (R/R) CLL.

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Epithelia are multicellular sheets that form barriers defining the internal and external environments. The constant stresses acting at this interface require that epithelial sheets are mechanically robust and provide a selective barrier to the hostile exterior. These properties are mediated by cellular junctions which are physically linked with heavily crosslinked cytoskeletal networks.

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Background: The relationship between case volume and clinical outcomes is well established for most urological procedures but remains underexplored in prostate ultrasound/MRI fusion biopsy (UMFB). UMFB aims to detect clinically significant prostate cancer (csPCa) by adhering to cancer detection benchmarks for PI-RADS lesions identified via multiparametric MRI (mpMRI). These benchmarks, defined by Ahmed et al.

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Background: Ulcerative colitis (UC) with concomitant primary sclerosing cholangitis (PSC) represents a distinct disease entity (PSC-UC). Mayo endoscopic subscore (MES) is a standard tool for assessing disease activity in UC but its relevance in PSC-UC remains unclear.

Aim: To assess the accuracy of MES in UC and PSC-UC patients, we performed histological scoring using Nancy histological index (NHI).

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Article Synopsis
  • Glioblastoma is the most common and aggressive primary brain tumor, making diagnosis difficult due to its genetic variability and poor prognosis.
  • A complex case study utilized multiple cytogenomic methods to identify key genetic markers, revealing classical glioblastoma characteristics and distinct pathological clones.
  • The study suggests an integrated approach for diagnosis, focusing on detecting genetic alterations to potentially improve patient outcomes in terms of diagnosis, prognosis, and treatment predictions.
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Biodielectrics is a subset of biological and/or bioinspired materials that has brought a huge transformation in the advancement of medical science, such as localized drug delivery in cancer therapeutics, health monitoring, bone and nerve repair, tissue engineering and use in other nanoelectromechanical systems (NEMS). While biodielectrics has long been used in the field of electrical insulation for over a century, polar dielectric properties of biological building blocks have not been well understood at the fundamental building block level. In this review article, we provide a brief overview of dielectric properties of biological building blocks and its hierarchical organisations to include polar dielectric properties such as piezo, pyro, and ferroelectricity.

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  • Super-resolution microscopy provides high-detail imaging but faces challenges with thick biological specimens, such as oocytes.
  • Optimizing sample preparation is crucial for achieving optical clarity, which enhances imaging capabilities for larger structures.
  • This study introduces a new method involving alcohol dehydration and high-refractive-index mounting, allowing for successful 3D imaging of mouse oocytes, thereby improving the analysis of complex biological processes.
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  • Fibrosis plays a role in healing but excessive fibrosis harms organ function, particularly in Alagille syndrome (ALGS), which is linked to mutations in the JAGGED1 gene that can lead to liver disease and fibrosis.
  • Research using Jag1 mice, a model for ALGS, demonstrated unusual liver characteristics, including immature liver cells and surprisingly few T cells, despite cholestasis (bile flow blockage).
  • The study also showed that when regulatory T cells were transferred to Rag1 mice, they led to less inflammation and fibrosis in response to liver damage, indicating that both hepatic and immune system flaws contribute to the fibrotic issues seen in ALGS.
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Purpose: Surrogate end points are commonly used to estimate treatment efficacy in clinical studies of chronic lymphocytic leukemia (CLL). This patient- and trial-level analysis describes the correlation between progression-free survival (PFS) and minimal residual disease (MRD) with overall survival (OS) in first-line trials for CLL.

Patients And Methods: First, patient-level correlation was confirmed using source data from 12 frontline German CLL Study Group (GCLLSG)-trials.

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Study Design: A psychometric study.

Objectives: To introduce a novel simple tool designed to evaluate the intensity of the phasic (dynamic) component of spastic motor behavior in spinal cord injury (SCI) people and to assess its reliability and validity.

Setting: The study was developed in the Spinal Cord Unit at University Hospital Motol and Paraple Centre in Prague, Czech Republic.

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  • The GAIA/CLL13 trial found that venetoclax-obinutuzumab and venetoclax-obinutuzumab-ibrutinib combinations led to better undetectable measurable residual disease (MRD) rates and longer progression-free survival compared to traditional chemoimmunotherapy for untreated chronic lymphocytic leukaemia (CLL) patients.
  • The trial was a phase 3 study involving 159 sites across Europe and the Middle East, enrolling patients aged 18 and older with specific health criteria and assigning them to different treatment groups, including standard chemoimmunotherapy and various venetoclax-based combinations.
  • All treatment regimens were administered in cycles, with detailed protocols for each group, specifically focusing on
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Long coherence times at room temperature make the NV center a promising candidate for quantum sensors and quantum computers. The necessary coherent control of the electron spin triplet in the ground state requires microwave π pulses in the nanosecond range, obtained from the Rabi oscillation of the m spin states of the magnetic resonances of the NV centers. Laboratory equipment has a high temporal resolution for these measurements but is expensive and, therefore, uninteresting for fields such as education.

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We evaluated the chronic lymphocytic leukemia International Prognostic Index (CLL-IPI) in patients with CLL treated first line with targeted drugs (n = 991) or chemoimmunotherapy (n = 1256). With a median observation time of 40.5 months, the 3-year progression-free survival (PFS) rates for targeted drug-treated patients varied by CLL-IPI risk group: 96.

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We investigate the magnetic field-dependent fluorescence lifetime of microdiamond powder containing a high density of nitrogen-vacancy centers. This constitutes a non-intensity quantity for robust, all-optical magnetic field sensing. We propose a fiber-based setup in which the excitation intensity is modulated in a frequency range up to 100MHz.

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We previously demonstrated that a reduced-intensity chemotherapy schedule can safely replace hyper-CVAD (cyclophosphamide-vincristine-doxorubicin [Adriamycin]-dexamethasone) cycle 1 when combined with imatinib in adults with Philadelphia-positive acute lymphoblastic leukemia. In the present randomized GRAAPH-2014 trial, we used nilotinib and addressed the omission of cytarabine (Ara-C) in consolidation. The primary objective was the major molecular response (MMR) rate measured by BCR::ABL1 quantification after cycle 4 (end of consolidation).

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Quantum magnetometry based on optically detected magnetic resonance (ODMR) of nitrogen vacancy centers in diamond nano or microcrystals is a promising technology for sensitive, integrated magnetic-field sensors. Currently, this technology is still cost-intensive and mainly found in research. Here we propose one of the smallest fully integrated quantum sensors to date based on nitrogen vacancy (NV) centers in diamond microcrystals.

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In this paper, we present the preparation of few-layer MoS films on single-crystal sapphire, as well as on heteroepitaxial GaN templates on sapphire substrates, using the pulsed laser deposition (PLD) technique. Detailed structural and chemical characterization of the films were performed using Raman spectroscopy, X-ray photoelectron spectroscopy, X-ray diffraction measurements, and high-resolution transmission electron microscopy. According to X-ray diffraction studies, the films exhibit epitaxial growth, indicating a good in-plane alignment.

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Magneto-transport characteristics of 2D and 3D superconducting layers, in particular, temperature and angular dependences of the upper critical field H, are usually considered to be fundamentally different. In the work, using non-local resistance measurements at temperatures near the normal-to-superconducting transition, we probed an effective dimensionality of nm-thick NbN films. It was found that in relatively thick NbN layers, the thicknesses of which varied from 50 to 100 nm, the temperature effect on H certainly pointed to the three-dimensionality of the samples, while the angular dependence of H revealed behavior typical for 2D samples.

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Background: Patients with newly diagnosed high-risk Burkitt lymphoma are treated with high-intensity immune-chemotherapy regimens such as R-CODOX-M/R-IVAC or with lower-intensity regimens such as DA-EPOCH-R. The aim of this study was to make a formal comparison between these regimens.

Methods: This multicentre, phase 3, open-label, randomised study was done in 26 clinical centres in the Netherlands, Belgium, and Switzerland.

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MXene is an innovative multilayered material that has been prepared by an acid-salt (HCl + NHF) etching route and tested for the removal of Ba and Cs in radioactive conditions for the first time. MXene has exhibited high uptake capacity of about 154.9 and 121.

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  • Complex karyotypes (CKTs) and highly complex karyotypes (hCKTs) are significant predictors of worse outcomes in chronic lymphocytic leukemia (CLL) when treated with chemoimmunotherapy, and their impact is further explored in venetoclax-based therapies.
  • * In a study involving 895 patients, CKTs were linked to shorter progression-free survival (PFS) and overall survival (OS) in the CIT group, while hCKTs negatively affected PFS in the venetoclax group.
  • * The findings suggest that karyotype analysis should be included in standard CLL diagnostics to better identify patients at high risk for poor treatment outcomes, supporting more personalized treatment approaches.
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  • The study investigates the effectiveness of venetoclax combined with anti-CD20 antibodies in fit patients with advanced chronic lymphocytic leukemia (CLL), compared to traditional chemoimmunotherapy.
  • In a phase 3 trial with 926 participants, various treatment regimens were compared, emphasizing the primary goals of achieving undetectable minimal residual disease and prolonging progression-free survival.
  • Results showed that venetoclax combinations significantly outperformed chemoimmunotherapy in terms of undetectable minimal residual disease rates and 3-year progression-free survival, especially in the venetoclax-obinutuzumab-ibrutinib group.
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