628 results match your criteria: "Universite de Lyon 1[Affiliation]"

Mammals in arid zones have to trade off thermal stress, predation pressure, and time spent foraging in a complex thermal landscape. We quantified the relationship between the environmental heat load and activity of a mammal community in the hot, arid Kalahari Desert. We deployed miniature black globe thermometers within the existing Snapshot Safari camera trap grid on Tswalu Kalahari Reserve, South Africa.

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Anionic Dye Removal with a Thin Cationic Polyaniline Coating on Cellulosic Biomaterial.

ACS Omega

April 2024

Laboratoire de Recherche: Caractérisations, Applications et Modélisation de Matériaux, Université de Tunis El Manar, Faculté des Sciences de Tunis, Campus Universitaire El Manar, Tunis 2092, Tunisia.

This paper reports the development of novel adsorbent materials using polyaniline (PANI) grafted onto Posidonia (POS) fibers, aimed at efficiently removing phenol red (PSP), an anionic dye, from aqueous solutions. The synthesis involved the copolymerization of aniline grafted on the surface of the POS and aniline monomer in solution, resulting in a chemically bound thin PANI layer on the POS bioadsorbent. Structural characteristics and binding affinities of these adsorbents with PANI under its emeraldine salt (POS@PANI-ES) or emeraldine base (POS@PANI-EB) forms are reported.

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Article Synopsis
  • Predators of similar sizes compete for food in ecosystems where water is scarce, which can lead to more conflicts among them, especially in Hwange National Park, Zimbabwe.
  • The study found that African wild dogs, lions, hyenas, cheetahs, and leopards had overlapping diets, primarily feeding on kudu, and that competition increased in areas with fewer waterholes.
  • To help wild dogs face less competition, the study suggests conserving larger prey species that rely less on water and managing water resources to maintain diversity in habitat availability.
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Background: The clinical spectrum of melanoma-associated neurological autoimmunity, whether melanoma-associated paraneoplastic neurological syndromes (PNS) or induced by immune checkpoint inhibitors (ICI), is not well characterized. We aim to describe the clinical spectrum of melanoma-associated neurological autoimmunity.

Methods: A systematic review of the literature combined with patients from French databases of paraneoplastic neurological syndromes was conducted.

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Study Objectives: Obstructive sleep apnea (OSA) is a heterogeneous condition covering many clinical phenotypes in terms of the diversity of symptoms. Patient-based OSA screening questionnaires used in routine practice contain significantly varying contents that can impact the reliability and validity of the screening. We investigated to what extent common patient-based OSA screening questionnaires differ or overlap in their item content by conducting a rigorous, methodical, and quantified content overlap analysis.

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Sleepiness should be reinvestigated through the lens of clinical neurophysiology: A mixed expertal and big-data Natural Language Processing approach.

Neurophysiol Clin

April 2024

Univ. Bordeaux, CNRS, SANPSY, UMR 6033, F-33000 Bordeaux, France; University Sleep Clinic, University Hospital of Bordeaux, Place Amélie Raba-Leon, 33 076 Bordeaux, France. Electronic address:

Historically, the field of sleep medicine has revolved around electrophysiological tools. However, the use of these tools as a neurophysiological method of investigation seems to be underrepresented today, from both international recommendations and sleep centers, in contrast to behavioral and psychometric tools. The aim of this article is to combine a data-driven approach and neurophysiological and sleep medicine expertise to confirm or refute the hypothesis that neurophysiology has declined in favor of behavioral or self-reported dimensions in sleep medicine for the investigation of sleepiness, despite the use of electrophysiological tools.

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Background: Understanding and teaching the three-dimensional architecture of the brain remains difficult because of the intricate arrangement of grey nuclei within white matter tracts. Although cortical area functions have been well studied, educational and three-dimensional descriptions of the organization of deep nuclei and white matter tracts are still missing.

Objective: We propose herein a detailed step-by-step dissection of the lateral aspect of a left hemisphere using the Klingler method and provide high-quality stereoscopic views with the aim to help teach medical students or surgeons the three-dimensional anatomy of the brain.

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Gas exchange parameters for the prediction of obstructive sleep apnea in infants.

J Clin Sleep Med

July 2024

Service de Pneumologie Infantile, Allergologie et Centre De Référence En Mucoviscidose, Hôpital Femme Mère Enfant, Hospices Civils de Lyon, Bron, France.

Study Objectives: Sleep laboratory polysomnography is the gold standard for obstructive sleep apnea (OSA) diagnosis in infants, but its access remains limited. Oximetry-capnography is another simple and widely used tool that can provide information on the presence of desaturations and alveolar hypoventilation. However, its reliability is debated.

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[How Palmer did… Raoul Palmer and the laparoscopic odyssey].

Gynecol Obstet Fertil Senol

June 2024

Département de gynécologie, hôpital Femme-Mère-Enfant (HFME), 59, boulevard Pinel, 69000 Lyon, France; EMR 3738, université de Lyon 1, 69000 Lyon, France.

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Alterations of serotonin type 4 receptor levels are linked to mood disorders and cognitive deficits in several conditions. However, few studies have investigated 5-HT4R alterations in movement disorders. We wondered whether striatal 5-HT4R expression is altered in experimental parkinsonism.

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The orientation of nonspherical particles in the atmosphere, such as volcanic ash and ice crystals, influences their residence times and the radiative properties of the atmosphere. Here, we demonstrate experimentally that the orientation of heavy submillimeter spheroids settling in still air exhibits decaying oscillations, whereas it relaxes monotonically in liquids. Theoretical analysis shows that these oscillations are due to particle inertia, caused by the large particle-fluid mass-density ratio.

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Journal Club: Update on pyoderma gangrenosum.

Eur J Dermatol

October 2023

CIRI, Centre International de Recherche en Infectiologie, (Team Epidermal Immunity and Allergy); INSERM, U1111; Univ Lyon; Université de Lyon 1; École Normale Supérieure de Lyon; CNRS, UMR 5308, Lyon, France, Department of Allergology and Immunology, Centre Hospitalier Lyon Sud, Pierre-Bénite, France.

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Particles from the tread of vehicle tyres are a global pollutant, which are emitted into the environment at an approximate rate of 1.4 kg.year for an average passenger-car.

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Assessing viral freshwater hazard using a toxicokinetic model and Dreissena polymorpha.

Environ Pollut

March 2024

UMR-I 02 SEBIO (Stress Environnementaux et BIOsurveillance des milieux aquatiques), Université de Reims Champagne Ardenne, UFR Sciences Exactes et Naturelles, Campus Moulin de Housse, BP 1039, 51687, Reims cedex 2, France. Electronic address:

The detection all pathogenic enteric viruses in water is expensive, time-consuming, and limited by numerous technical difficulties. Consequently, using reliable indicators such as F-specific RNA phages (FRNAPH) can be well adapted to assess the risk of viral contamination of fecal origin in surface waters. However, the variability of results inherent to the water matrix makes it difficult to use them routinely and to interpret viral risk.

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One-third of the nine WHO shortlisted pathogens prioritized for research and development in public health emergencies belong to the order. Several species carry an NSm protein that acts as a virulence factor. We predicted the structures of these NSm proteins and unexpectedly found that in two families, their cytosolic domain was inferred to have a similar fold to that of the cytosolic domain of the viral envelope-forming glycoprotein N (Gn) encoded on the same genome fragment.

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Gene profiling in active dermatitis lesions strengthens the diagnosis of allergic contact dermatitis.

J Am Acad Dermatol

May 2024

CIRI, Centre International de Recherche en Infectiologie, Team Epidermal Immunity and Allergy, INSERM, U1111, Univ Lyon, Université de Lyon 1, Ecole Normale Supérieure de Lyon, CNRS, UMR, Lyon, France. Electronic address:

Article Synopsis
  • - The study aims to distinguish between allergic and nonallergic Contact Dermatitis (CD) by analyzing molecular signatures in skin lesions of patients, using patch-testing for diagnosis.
  • - Researchers tested 12 allergy biomarkers in lesions from 38 CD patients, finding two patterns: one group showed allergy signatures that correlated with acute allergic reactions, while another group did not.
  • - The findings suggest that identifying these molecular signatures could improve patient management by helping to predict those with allergic CD, potentially simplifying treatment approaches.
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Article Synopsis
  • - The study examines the Acinetobacter baumannii clonal lineage ST25 in both humans and animals, revealing its global presence and connections through phylogenetic analysis of 141 genomes.
  • - Four distinct clades of ST25 were identified, with two primarily in South America and two in Europe, Asia, and America, showing variations in antibiotic resistance genes, especially OXA-23 carbapenemase.
  • - Findings indicate genomic similarities between drug-resistant ST25 isolates from humans and animals, suggesting possible cross-contamination and emphasizing the need for tracking these bacteria to improve global health strategies.
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Background: The escalating risk and contemporary occurrences of arbovirus infections prompt a critical inquiry into the ability of nations to execute efficient surveillance systems capable to detect, prevent and respond to arbovirus outbreaks. Healthcare workers (HCWs) are the major actors in the surveillance of infectious diseases with epidemic potential. The objective of this study was to evaluate the knowledge, attitudes and perceptions of HCWs regarding arboviruses in the public health facilities of Conakry, Guinea.

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Article Synopsis
  • - Immune checkpoint inhibitors (ICIs) have significantly improved the treatment of metastatic melanoma, but they can cause immune-related adverse events (irAEs), which are still under debate regarding their impact on patient prognosis.
  • - This study analyzed data from 14 randomized controlled trials, involving 7646 melanoma patients, to explore the relationship between irAEs and overall survival (OS) but found no significant correlation.
  • - The results indicate that while irAEs are common, especially with combination therapies, they do not appear to indicate better survival outcomes for melanoma patients, suggesting no link between irAE occurrence and prognosis.
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Content analysis of insomnia questionnaires: A step to better evaluate the complex and multifaceted construct of insomnia disorder.

Psychiatry Res

December 2023

University Bordeaux, CNRS, SANPSY, UMR 6033, Bordeaux F-33000, France; University Sleep Clinic, University Hospital of Bordeaux, Place Amélie Raba-Leon, Bordeaux 33 076, France.

Insomnia disorder is a mental disorder that includes various types of symptoms (e.g., insomnia initiating, worries, mood disturbances) and impairments (e.

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AS1411 aptamer tagged PEGylated liposomes as a smart nanocarrier for tumor-specific delivery of Withaferin A for mitigating pulmonary metastasis.

Biomater Adv

November 2023

Laboratory of Immunopharmacology and Experimental Therapeutics, Division of Cancer Research, Regional Cancer Centre, Medical College post, Thiruvananthapuram 695011, Kerala, India (Recognized Research Centre, University of Kerala). Electronic address:

Metastasis is the most challenging health problem contributing to about 90 % of cancer-related deaths worldwide. Metastatic tumors are highly aggressive and resistant to the most available therapeutic options. Hence, innovative therapeutic approaches are required to target metastatic tumors selectively.

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[Not Available].

Rev Prat

September 2023

Service de transplantation, néphrologie et immunologie clinique, hôpital Édouard-Herriot, Lyon, France. Université de Lyon-1, France. Unité INSERM U1111, France.

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[Organ transplantation].

Rev Prat

September 2023

Service de transplantation, néphrologie et immunologie clinique, hôpital Édouard-Herriot, Lyon, France. Université de Lyon-1, France. Unité Inserm U1111, France.

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