1,079,846 results match your criteria: "France ; University Hospital[Affiliation]"

Background: The detection rate of oncogenic human papillomaviruses (HPVs) in sinonasal squamous cell carcinomas (SNSCCs) varies among studies. The mutational landscape of SNSCCs remains poorly investigated.

Methods: We investigated the prevalence and prognostic significance of HPV infections based on p16 protein expression, HPV-DNA detection, and E6/E7 mRNA expression using immunohistochemistry, polymerase chain reaction, and in situ hybridization, respectively.

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The new allele HLA-B*44:384 differs from HLA-B*44:02:01:01 by one non-synonymous nucleotide substitution in exon 2.

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Purpose: This study aimed to investigate whether combining the analysis of different magnetic resonance imaging (MRI) signs enhances the diagnostic accuracy of lateral meniscus posterior root tears (LMPRTs) in patients with anterior cruciate ligament (ACL) injuries. We hypothesised that analysing the cleft, ghost and truncated triangle signs and lateral meniscus extrusion (LME) measurement together would improve the preoperative MRI-based diagnosis of LMPRTs.

Methods: This retrospective study used prospectively collected registry data from two academic centres, including patients undergoing primary or revision ACL reconstruction (ACLR) and LMPRT repair.

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The novel allele HLA-DQA1*02:39 differs from HLA-DQA1*02:01:01:01 by one non-synonymous nucleotide substitution in exon 2.

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The novel HLA-DRB1*07:159 allele differs from HLA-DRB1*07:01:01:01 by one non-synonymous nucleotide substitution in exon 2.

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A preliminary ex vivo diffusion tensor imaging study of distinct aortic morphologies.

J Anat

January 2025

Trinity Centre for Biomedical Engineering, Trinity Biomedical Sciences Institute, Trinity College Dublin, Dublin, Ireland.

Changes in the microstructure of the aortic wall precede the progression of various aortic pathologies, including aneurysms and dissection. Current clinical decisions with regards to surgical planning and/or radiological intervention are guided by geometric features, such as aortic diameter, since clinical imaging lacks tissue microstructural information. The aim of this proof-of-concept work is to investigate a non-invasive imaging method, diffusion tensor imaging (DTI), in ex vivo aortic tissue to gain insights into the microstructure.

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Impact of Norepinephrine Use on Free Flap Survival in Breast Reconstructive Microsurgery.

Microsurgery

January 2025

Service de Chirurgie Plastique et Reconstructrice, Hôpital européen Georges-Pompidou, Paris, France.

Objective: The optimal method for maintaining intraoperative blood pressure during microsurgical procedures remains controversial. While intravenous fluid administration is essential, overfilling can lead to complications. Vasopressor agents are used cautiously due to their vasoconstrictive effects, which could potentially lead to flap failure.

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Background And Aims: The performance of non-invasive liver tests (NITs) is known to vary across settings and subgroups. We systematically evaluated whether the performance of three NITs in detecting advanced fibrosis in patients with metabolic dysfunction-associated steatotic liver disease (MASLD) varies with age, sex, body mass index (BMI), type 2 diabetes mellitus (T2DM) status or liver enzymes.

Methods: Data from 586 adult LITMUS Metacohort participants with histologically characterised MASLD were included.

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Background: Systemic lupus erythematosus (SLE) often presents with neuropsychiatric (NP) involvement, including cognitive impairment and depression. Past magnetic resonance imaging (MRI) research in SLE patients showed smaller hippocampal volumes but did not investigate other medial temporal lobe (MTL) regions. Our study aims to compare MTL subregional volumes in SLE patients to healthy individuals (HI) and explore MTL subregional volumes in relation to neuropsychiatric SLE (NPSLE) manifestations.

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Vacuolization of hematopoietic precursors cells is a common future of several otherwise non-related clinical settings such as VEXAS, Chediak-Higashi syndrome and Danon disease. Although these disorders have a priori nothing to do with one other from a clinical point of view, all share abnormal vacuolization in different cell types including cells of the erythroid/myeloid lineage that is likely the consequence of moderate to drastic dysfunctions in the ubiquitin proteasome system and/or the endo-lysosomal pathway. Indeed, the genes affected in these three diseases UBA1, LYST or LAMP2 are known to be direct or indirect regulators of lysosome trafficking and function and/or of different modes of autophagy.

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Background: We investigated factors associated with post-transplant growth in pediatric kidney transplant (KTx) recipients with a focus on plasma bicarbonate (HCO3) and estimated the effect of alkali treatment on growth.

Methods: In this study of the CERTAIN Registry, data were collected up to 5 years post-transplant. Generalized Additive Mixed Models were applied to assess the association between post-transplant growth and covariates.

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Cuneiform tablets were a primary writing medium in the ancient Near East from the late fourth millennium BCE to the first century CE. Although these clay tablets were durable for daily use, prolonged burial over millennia has made them vulnerable to salt damage. Fluctuations in temperature and humidity cause the migration of salts to the surface of the tablets, damaging them and covering the inscriptions, making the text unreadable.

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Prostate cancer is a heterogeneous disease with a slow progression and a highly variable clinical outcome. The tumor suppressor genes PTEN and TP53 are frequently mutated in prostate cancer and are predictive of early metastatic dissemination and unfavorable patient outcomes. The progression of solid tumors to metastasis is often associated with increased cell plasticity, but the complex events underlying TP53-loss-induced disease aggressiveness remain incompletely understood.

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Irrigation rapidly expanded during the 20 century, affecting climate via water, energy, and biogeochemical changes. Previous assessments of these effects predominantly relied on a single Earth System Model, and therefore suffered from structural model uncertainties. Here we quantify the impacts of historical irrigation expansion on climate by analysing simulation results from six Earth system models participating in the Irrigation Model Intercomparison Project (IRRMIP).

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Temperature seasonality regulates organic carbon burial in lake.

Nat Commun

January 2025

Laboratoire des Sciences du Climat et de l' Environnement, LSCE/IPSL, CEA-CNRS-UVSQ, Université Paris-Saclay, Gif-sur-Yvette, France.

Organic carbon burial (OCB) in lakes, a critical component of the global carbon cycle, surpasses that in oceans, yet its response to global warming and associated feedbacks remains poorly understood. Using a well-dated biomarker sequence from the southern Tibetan Plateau and a comprehensive analysis of Holocene total organic carbon variations in lakes across the region, here we demonstrate that lake OCB significantly declined throughout the Holocene, closely linked to changes in temperature seasonality. Process-based land surface model simulations clarified the key impact of temperature seasonality on OCB in lakes: increased seasonality in the early Holocene saw warmer summers enhancing ecosystem productivity and organic matter deposition, while cooler winters improved organic matter preservation.

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Metabolic syndrome is, in humans, associated with alterations in the composition and localization of the intestinal microbiota, including encroachment of bacteria within the colon's inner mucus layer. Possible promoters of these events include dietary emulsifiers, such as carboxymethylcellulose (CMC) and polysorbate-80 (P80), which, in mice, result in altered microbiota composition, encroachment, low-grade inflammation and metabolic syndrome. While assessments of gut microbiota composition have largely focused on fecal/luminal samples, we hypothesize an outsized role for changes in mucus microbiota in driving low-grade inflammation and its consequences.

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Normal variations of myocardial T1, T2 and T2* values at 1.5 T cardiac MRI in sex-matched healthy volunteers.

Diagn Interv Imaging

January 2025

UFR Santé INSERM U1096, Rouen 76183, France; Department of Radiology and Medical Imaging (Cardiac Imaging Unit), CHU de Rouen Normandie, Hôpital Charles Nicolle, University of Rouen Normandie, Rouen 76000, France. Electronic address:

Purpose: The purpose of this study was to determine the normal variations of myocardial T1, T2, and T2* relaxation times on cardiac MRI obtained at 1.5 T in healthy, sex-balanced volunteers aged between 18 and 69 years.

Material And Methods: A total of 172 healthy volunteers were recruited prospectively.

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Circadian aspects in nonpharmacologic and pharmacologic treatment of insomnia.

Handb Clin Neurol

January 2025

Department of Surgical Medical and Molecular Pathology and Critical Care Medicine, University of Pisa, Pisa, Italy; Department of Neuroscience, Psychology Unit, University of Pisa Azienda Ospedaliera Universitaria Pisana (AUOP), Pisa, Italy.

Insomnia disorder is a frequent sleep disorder leading to significant health and economic consequences. It has been proposed that individuals with insomnia may experience compromised deactivation systems of arousal, leading to a chronic state of hyperactivation of arousal known as hyperarousal, along with instability in the flip-flop system. Such disruptions may have a primarily impact on the sleep homeostatic drive process.

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Circadian rhythm disorders in the blind.

Handb Clin Neurol

January 2025

Neurology Department, Adsalutem Institute Sleep Medicine, Barcelona, Spain; Neurology Service, Sleep Disorders Unit, Hospital Universitari Sagrat Cor, Grupo Quirónsalud, Barcelona, Spain.

Non-24-h sleep-wake disorder in blind patients without light perception is an orphan circadian rhythm sleep-wake disorder and is extremely rare in sighted people. Non-24-h sleep-wake disorder is characterized by insomnia and daytime sleepiness alternating with asymptomatic episodes. The frequency of symptomatic periods depends on the daily desynchronization of endogenous circadian pattern of each patient.

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ESMO Clinical Practice Guideline interim update on the management of biliary tract cancer.

ESMO Open

January 2025

INSERM U1279, Université Paris-Saclay, Villejuif, France; Department of Cancer Medicine, Gustave Roussy, Villejuif, France.

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Nuclear calcium signaling in D1 receptor-expressing neurons of the nucleus accumbens regulates molecular, cellular and behavioral adaptations to cocaine.

Biol Psychiatry

January 2025

Institute of Biology Paris-Seine, laboratory Neuroscience Paris-Seine, CNRS, INSERM, Sorbonne Université, UPMC Université Paris 06 F-75005, Paris, France. Electronic address:

Background: The persistence of cocaine-evoked adaptations relies on gene regulations within the reward circuit, especially in the ventral striatum (i.e., nucleus accumbens (NAc)).

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Clarithromycin, a common antibiotic found in domestic wastewater, persists even after treatment and can transfer to soils when treated wastewater (TWW) is used for irrigation. This residual antibiotic may exert selection pressure, promoting the spread of antibiotic resistance. While Predicted No Effect Concentrations (PNECs) are used in liquid media to predict resistance risks, PNEC values for soils, especially for clarithromycin, are lacking.

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A 15 month-monitoring of biofouling in relationship with hydrological parameters and contaminants in three French harbours of the English Channel.

Environ Res

January 2025

Université de Caen Normandie, Alliance Sorbonne Université, MNHN, UA, CNRS, IRD, Biologie des Organismes et Ecosystèmes Aquatiques (BOREA), Esplanade de la Paix, 14032 Caen, France; MERSEA UR 7482, Université de Caen Normandie, Esplanade de la Paix, 14032 Caen, France.

Three French harbours connected to different water masses of the English Channel were chosen to investigate the hydrological parameters, chemical contaminants, and biofouling characteristics for 15 months. The biofouling development on two kinds of coatings, an anticorrosion coating (Epoxy) and a foul-release coating (FRC), was studied to compare micro- and macro- biofouling in harbour environments. Biofouling was investigated by considering wet biofouling biomass and composition, microalgae concentration, and bacterial abundance.

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