Publications by authors named "Sauer F"

Introduction: Transthyretin cardiac amyloidosis is a pathology increasingly encountered in all hospital departments, including internal medicine. The aim of our study is to describe the characteristics and care pathway of patients with transthyretin cardiac amyloidosis in internal medicine and to show that the number of patients diagnosed is increasing.

Methods: Descriptive, retrospective, non-interventional, single-center study at Strasbourg University Hospitals (HUS).

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The chlamydial deubiquitinase Cdu1 of the obligate intracellular human pathogenic bacterium Chlamydia trachomatis plays important roles in the maintenance of chlamydial infection. Despite the structural similarities shared with its homologue Cdu2, both DUBs display remarkable differences in their enzymatic activity towards poly-UB chain substrates. Whereas Cdu1 is highly active towards K48- and K63- poly-UB chains, Cdu2 activity is restricted mostly to mono-UB substrates.

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causes life-threatening invasive infections that are hard to diagnose and treat, with drug resistance leading to treatment failure. The goal of this study was to develop VHH (single variable domain on a heavy chain) nanobodies to detect drug-resistant infections. Llamas were immunized with a mixture of heat killed and fixed cells of different morphologies.

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Mosquito-borne diseases are a major global health threat. Traditional morphological or molecular methods for identifying mosquito species often require specialized expertise or expensive laboratory equipment. The use of convolutional neural networks (CNNs) to identify mosquito species based on images may offer a promising alternative, but their practical implementation often remains limited.

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Article Synopsis
  • - The study investigates the host feeding patterns of two mosquito species, Culex pipiens and Culex torrentium, which are known vectors for viruses like West Nile, emphasizing that previous studies often overlook their differences despite them looking similar.
  • - Researchers conducted host-choice experiments and collected data from specimens in Germany, Iran, and Moldova from 2012 to 2022, revealing that the majority of these mosquitoes preferred birds, but significant proportions also fed on humans and other mammals.
  • - Findings indicate geographical variation in feeding habits, with more than 50% of Culex pipiens and about 50% of Culex torrentium feeding on birds, while others fed on mammals or humans, highlighting the importance of
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Background: Mosquitoes are important vectors of pathogens. They are usually collected with CO-baited traps and subsequently identified by morphology. This procedure is very time-consuming.

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The development of cancer therapeutics is often hindered by the fact that specific oncogenes cannot be directly pharmaceutically addressed. Targeting deubiquitylases that stabilize these oncogenes provides a promising alternative. USP28 and USP25 have been identified as such target deubiquitylases, and several small-molecule inhibitors indiscriminately inhibiting both enzymes have been developed.

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The superfamily 2 helicase XPD is a central component of the general transcription factor II H (TFIIH), which is essential for transcription and nucleotide excision DNA repair (NER). Within these two processes, the helicase function of XPD is vital for NER but not for transcription initiation, where XPD acts only as a scaffold for other factors. Using cryo-EM, we deciphered one of the most enigmatic steps in XPD helicase action: the active separation of double-stranded DNA (dsDNA) and its stalling upon approaching a DNA interstrand cross-link, a highly toxic form of DNA damage.

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Head and neck squamous-cell carcinoma (HNSCC) is associated with aggressive local invasiveness, being a main reason for its poor prognosis. The exact mechanisms underlying the strong invasive abilities of HNSCC remain to be elucidated. Therefore, there is a need for in vitro models to study the interplay between cancer cells and normal adjacent tissue at the invasive tumor front.

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Prostate cancer (PCa) is a significant health problem in the male population of the Western world. Magnetic resonance elastography (MRE), an emerging medical imaging technique sensitive to mechanical properties of biological tissues, detects PCa based on abnormally high stiffness and viscosity values. Yet, the origin of these changes in tissue properties and how they correlate with histopathological markers and tumor aggressiveness are largely unknown, hindering the use of tumor biomechanical properties for establishing a noninvasive PCa staging system.

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Cells can adapt their active contractile properties to switch between dynamical migratory states and static homeostasis. Collective tissue surface tension, generated among others by the cortical contractility of single cells, can keep cell clusters compact, while a more bipolar, anisotropic contractility is predominantly used by mesenchymal cells to pull themselves into the extracellular matrix (ECM). Here, we investigate how these two contractility modes relate to cancer cell escape into the ECM.

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Objective: Reinforcement and sustainability of sports and exercise therapy in inpatient depression treatment.

Methods: Randomized controlled study with 3 measurement times: t admission to the study, t after four weeks, t two months after discharge. 96 inpatients with depressive disorders (ICD-10 F32, F33) were randomly assigned to an intervention group (IG) or a control group (KG).

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Objective: To assess the histological injury and intestinal microperfusion measured by laser Doppler flowmetry and spectrophotometry (LDFS) of the small intestine orad to a strangulation during colic surgery.

Animals: Horses with naturally occurring small intestinal strangulations undergoing colic surgery were included.

Methods: In this prospective clinical trial, intestinal tissue oxygen saturation (tSO2) and tissue blood flow (tBF) were measured by LDFS orad to the strangulation following release of the strangulation (n = 18).

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Two strains, Mel and AlbB, have been transinfected into mosquitoes for population replacement with the aim of reducing dengue transmission. Epidemiological data from various endemic sites suggest a pronounced decrease in dengue transmission after implementing this strategy. In this study, we investigated the impact of the strains Mel and AlbB on fitness in a common genetic background.

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Accurate species identification is crucial to assess the medical relevance of a mosquito specimen, but requires intensive experience of the observers and well-equipped laboratories. In this proof-of-concept study, we developed a convolutional neural network (CNN) to identify seven Aedes species by wing images, only. While previous studies used images of the whole mosquito body, the nearly two-dimensional wings may facilitate standardized image capture and reduce the complexity of the CNN implementation.

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In cell clusters, the prominent factors at play encompass contractility-based enhanced tissue surface tension and cell unjamming transition. The former effect pertains to the boundary effect, while the latter constitutes a bulk effect. Both effects share outcomes of inducing significant elongation in cells.

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Background: Few case reports describe equine coxofemoral joint osteoarthritis (CFJOA).

Objectives: To evaluate diagnostic findings and outcome of horses with CFJOA and to provide a score facilitating radiographic assessment.

Study Design: Retrospective case series.

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Background: Aedes japonicus japonicus (Theobald, 1901) and Aedes koreicus (Edwards, 1917) have rapidly spread in Europe over the last decades. Both species are very closely related and occur in sympatry. Females and males are difficult to distinguish.

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The spatial distribution of mosquito species in the course of globalization and climate warming is highly dynamic. Different studies have demonstrated the spread and establishment of thermophilic mosquito species, potentially increasing the prevalence of 'nuisance' mosquitoes and the local transmission of pathogens. Here we report the first recorded sampling of Anopheles hyrcanus in Wrocław, southwest Poland.

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Background: The impact of the arbovirus vector Aedes aegypti is of major concern for global public health as the viruses that it transmits affect millions of people each year worldwide. Originating in Africa, Ae. aegypti has now spread throughout much of the world.

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Article Synopsis
  • Cancer progression results from genetic changes that alter cell properties and the mechanical state of tumors, with increased stiffness recognized but having limited prognostic utility.
  • Recent research suggests that tissue fluidization occurs alongside cancer progression, leading to changes in tissue behavior influenced by factors like cellular activity and microenvironment.
  • Advanced techniques, such as multifrequency magnetic resonance elastography, can differentiate tumors from surrounding tissues, and a meta-analysis identifies key mechanical characteristics that could help predict tumor aggressiveness and metastatic potential.
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s.s./ belong to the most widespread mosquito taxa in Europe and are the main vectors of Sindbis, West Nile and Usutu virus.

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Pulmonary arterial hypertension (PAH) is a rare disease characterized by pulmonary vascular remodeling leading to right heart failure and death. To date, despite the three therapeutic approaches targeting the three major endothelial dysfunction pathways based on the prostacyclin, nitric oxide/cyclic guanosine monophosphate, and endothelin pathways, PAH remains a serious disease. As such, new targets and therapeutic agents are needed.

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Objective: To describe the treatment and outcome of a foal with a fresh allogenic cancellous bone graft after surgical debridement of a traumatic septic osteitis.

Animal: A neonatal Quarter Horse foal.

Study Design: Case report.

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Article Synopsis
  • The study examines mitochondrial function in circulating peripheral blood mononuclear cells (PBMCs) of heart transplant (Htx) patients compared to healthy controls, noting a decrease in complex II respiration and an increase in complex IV respiration in Htx patients.
  • Enhanced superoxide anion production and changes in leucocyte-to-lymphocyte ratios were observed in Htx patients, suggesting a correlation between mitochondrial respiration and immune cell dynamics.
  • The findings indicate that despite normal systolic function, heart transplant patients exhibit abnormal PBMC mitochondrial respiration, which may be affected by subclinical diastolic dysfunction and the immune response related to the transplant.
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