305 results match your criteria: "Fondation Bordeaux Univ.; richard.walton@ihu-liryc.fr.[Affiliation]"

Background: Clonal hematopoiesis of indeterminate potential (CHIP) was initially linked to a twofold increase in atherothrombotic events. However, recent investigations have revealed a more nuanced picture, suggesting that CHIP may confer only a modest rise in myocardial infarction (MI) risk. This observed lower risk might be influenced by yet unidentified factors that modulate the pathological effects of CHIP.

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Article Synopsis
  • Clinical heterogeneity in bipolar disorder (BD) refers to the diverse experiences of individuals with the same diagnosis, affecting their remission and recovery during periods of wellbeing known as euthymia.
  • A study with 58 participants identified five distinct profiles of experiences during euthymia, based on their symptoms and recovery, and highlighted that current family functioning plays a significant role in these experiences.
  • The findings suggest that understanding personal recovery and family dynamics is crucial for clinicians to adapt their care strategies effectively for individuals with BD.
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Association between education level and access to disease-modifying treatment in patients with multiple sclerosis in France.

Mult Scler

January 2025

Univ Rennes, EHESP, CNRS, Inserm, Arènes-UMR 6051, RSMS (Recherche sur les Services et Management en Santé)-U 1309, Rennes, France.

Background: We hypothesized that differences in access to disease-modifying treatments (DMTs) could explain the association between socioeconomic status and disability progression in multiple sclerosis (MS).

Objective: This study aimed to analyze the association between education level and DMT use in France.

Methods: All patients from OFSEP network with MS onset over 1996-2014 and aged ⩾ 25 years at onset were included.

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Association between education level and disability progression in patients with multiple sclerosis in France.

Mult Scler

January 2025

Univ Rennes, EHESP, CNRS, Inserm, Arènes-UMR 6051, RSMS (Recherche sur les Services et Management en Santé)-U 1309, Rennes, France.

Background: Studies have reported an association between socioeconomic status and disability progression in multiple sclerosis (MS), but findings using the pre-MS individual socioeconomic status are missing.

Objective: The objective was to investigate the association between education level and disability progression.

Methods: All Observatoire Français de la Sclérose en Plaques (OFSEP) patients with MS clinical onset over 1960-2014, and aged ⩾25 years at MS onset were included.

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  • Dilated cardiomyopathy (DCM) is a major cause of heart failure, and this study analyzes genetic factors by examining 14,256 DCM cases and 36,203 participants from the UK Biobank for related traits.
  • Researchers discovered 80 genomic risk loci and pinpointed 62 potential effector genes tied to DCM, including some linked to rare variants.
  • The study uses advanced transcriptomics to explore how cellular functions contribute to DCM, showing that polygenic scores can help predict the disease in the general population and emphasize the importance of genetic testing and development of precise treatments.
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Background: Quality of life is decreased in bipolar disorders (BD) and contributes to poor prognosis. However, little is known about the causal pathways that may affect it. This study aimed to explore health-related QoL (HRQoL) in BD and investigate its relationship with cognition and psychosocial functioning.

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  • The study investigated the link between air pollution and cataract surgery incidence in older adults in Bordeaux, France.
  • Researchers followed 829 participants aged 65 and older from 1999-2017, monitoring their cataract surgeries and estimating their long-term air pollution exposure.
  • Results showed that long-term exposure to nitrogen dioxide (NO) at levels ≥40 μg/m was significantly associated with increased incidence of cataract surgery, suggesting that meeting air quality standards could benefit public health.
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Children with neurodevelopmental disorders, such as developmental coordination disorder (DCD), exhibit gross to fine sensorimotor impairments, reduced physical activity and interactions with the environment and people. This disorder co-exists with cognitive deficits, executive dysfunctions and learning impairments. Previously, we demonstrated in rats that limited amounts and atypical patterns of movements and somatosensory feedback during early movement restriction manifested in adulthood as degraded postural and locomotor abilities, and musculoskeletal histopathology, including muscle atrophy, hyperexcitability within sensorimotor circuitry and maladaptive cortical plasticity, leading to functional disorganization of the primary somatosensory and motor cortices in the absence of cortical histopathology.

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Genome wide association and animal studies have implicated genetic variations in CHRNΑ5, encoding the α5 subunit-containing nicotinic acetylcholine receptors (α5*nAChRs), as a risk factor for developing alcohol use disorders (AUDs). To understand how α5*nAChR mutations may influence alcohol (EtOH) drinking behavior, we used a two-bottle choice procedure with intermittent access to alcohol in male and female transgenic mice expressing either the highly frequent human single nucleotide polymorphism (α5SNP/rs16969968) or a deletion of the Chrna5 gene (α5KO). AUDs-related preconsommatory traits (anxiety, sensation-seeking and impulsivity) were assessed with a battery of relevant tasks (elevated-plus maze, novel place preference and step-down inhibitory avoidance).

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Structural insights into the mechanism of DNA branch migration during homologous recombination in bacteria.

EMBO J

December 2024

Structure and Function of Bacterial Nanomachines-Institut Européen de Chimie et Biologie, Microbiologie fondamentale et pathogénicité, UMR 5234, CNRS, University of Bordeaux, 2 rue Robert Escarpit, 33600, Pessac, France.

Article Synopsis
  • Some DNA helicases are important for maintaining and adapting genomes by facilitating branch migration in homologous recombination pathways.
  • RadA is a common bacterial helicase that aids in DNA repair and plays additional roles in natural transformation for some bacteria; while ComM serves a similar purpose in Gram-negative bacteria.
  • The study presents cryoEM structures of RadA and ComM with DNA and ATP analogs, highlighting how ATP hydrolysis and DNA binding are interconnected, along with the function of a shared domain in these helicases.
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Background: Patients with acute basilar artery occlusion (BAO) and low-to-moderate symptoms (National Institutes of Health Stroke Scale [NIHSS] < 10) are poorly represented in thrombectomy trials. Our objective is to compare thrombectomy and best medical management (BMT) in this population.

Methods: We compared data of all consecutive patients presenting with an initial NIHSS < 10 and acute symptomatic BAO included in two registries.

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Astrocytic DLL4-NOTCH1 signaling pathway promotes neuroinflammation via the IL-6-STAT3 axis.

J Neuroinflammation

October 2024

Univ. Bordeaux, INSERM, Biology of Cardiovascular Diseases, U1034, 01 avenue de Magellan, Pessac, 33601, France.

Article Synopsis
  • Under neuroinflammatory conditions, astrocytes adopt a reactive phenotype that exacerbates inflammation and contributes to neurodegeneration, with the study focusing on the role of astrocytic DLL4 and its interaction with NOTCH1 in regulating this reactivity.
  • The research found that during neuroinflammation, DLL4 is upregulated in both mice and humans, leading to increased astrocyte reactivity, blood-brain barrier permeability, and inflammatory responses through the DLL4-NOTCH1 signaling pathway.
  • Blocking DLL4 with antibodies showed promise in alleviating symptoms of experimental autoimmune encephalomyelitis in mice, suggesting a new potential therapeutic approach for treating CNS autoimmune diseases.
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Psychiatric symptoms are common in neurodevelopmental movement disorders, including some types of dystonia. However, research has mainly focused on motor manifestations and underlying circuits. Myoclonus-dystonia is a rare and homogeneous neurodevelopmental condition serving as an illustrative paradigm of childhood-onset dystonias, associated with psychiatric symptoms.

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Anti-CD20 Therapies in Drug-Naive Patients With Primary Progressive Multiple Sclerosis: A Multicenter Real-Life Study.

Neurology

October 2024

From the Neurology Department (M.H., A.K., G.E., E.L.P., L. Michel), Rennes University Hospital; Clinical Neuroscience Centre (M.H., A.K., G.E., E.L.P., L. Michel), CIC_P1414 INSERM, Rennes, University Hospital, Rennes University; Université Claude Bernard Lyon 1 (F.R., R.C., S.V.), Université de Lyon; Service de Neurologie, Sclérose en Plaques, Pathologies de la Myéline et Neuro-inflammation (F.R., R.C., S.V.), Hospices Civils de Lyon, Bron; Observatoire Français de la Sclérose en Plaques (F.R., R.C., S.V.), Centre de Recherche en Neurosciences de Lyon, INSERM 1028 et CNRS UMR 5292; EUGENE DEVIC EDMUS Foundation Against Multiple Sclerosis, state-approved foundation (F.R., R.C., S.V.), Bron; Department of Neurology (G.M.), Nancy University Hospital; Université de Lorraine (G.M.), Inserm, INSPIIRE, Nancy; MS Unit (P.L.), CHU de Montpellier; University of Montpellier (MUSE) (P.L.); Department of Neurology and Clinical Investigation Center (J.D.S.), CHU de Strasbourg, CIC 1434, INSERM 1434; Service de Neurologie (D.-A.L.), CHU Nantes, Nantes Université, INSERM, Center for Research in Transplantation and Translational Immunology, UMR 1064, CIC INSERM 1413; Department of Neurology (C.P.), Fondation Rotschild, Paris; Department of Neurology (T.M.), CHU de Dijon, EA4184; Department of Neurology (E.T.), Nimes University Hospital; IGF (E.T.), University of Montpellier, CNRS, INSERM; CHU de Caen (G.D.), MS Expert Centre, Department of Neurology, Normandy University, Caen; Neurology (C.L.-F.), UR2CA_URRIS, Centre Hospitalier Universitaire Pasteur2, Université Nice Côte d'Azur, Nice; Department of Neurology (J.C.), CHU de Toulouse, CRC-SEP; Université Toulouse III (J.C.), Infinity, INSERM UMR1291-CNRS UMR5051; Service de Neurologie (E.B.), CHU de Besançon; Sorbonne Universités (B.S.), Paris Brain Institute, ICM, Inserm UMR S 1127, CNRS UMR 7225, and Department of Neurology, AP-HP, Hôpital de la Pitié Salpêtrière; CHU Clermont-Ferrand (P.C.), CRC SEP Auvergne, Department of Neurology, and INSERM NeuroDol U1107; Département de Neurologie (E.M.), Hôpital Pitié-Salpêtrière, APHP; Centre de Ressources et de Compétences SEP Paris (E.M.); Departement of Neurology (O.H.), Centre de Ressource et Compétences SEP IDF Ouest, Hôpital de Poissy; CHU Lille (H.Z.), CRCSEP Lille, Univ Lille, U1172; Department of Neurology (A.R.), University Hospital of Bordeaux; Neurocentre Magendie (A.R.), Bordeaux University, INSERM U1215; Department of Neurology (O.C.), CHU Grenoble Alpes, Neurology MS Clinic Grenoble, Grenoble Alpes University Hospital, La Tronche; Department of Neurology (S.M.), CHU de Reims, CRC-SEP; Department of Neurology (A.A.-K.), CHU d'Amiens; Departement of Neurology (B.B.), CHU de Rouen; Service de Neurologie (J.P.), Pôle de Neurosciences Cliniques, APHM, Hôpital de la Timone, Aix Marseille Univ; Department of Neurology (L. Magy), Hôpital Dupuytren, CHU de Limoges; Department of Neurology (J.-P.N.), Hôpital Jean Bernard, CHU La Milétrie, Poitiers; Department of Neurology (J.-P.C.), Hôpital Nord, CHU de Saint-Étienne; CRC SEP and Department of Neurology (I.D.), Hôpital Bretonneau, CHU de Tours; Department of Neurology (A.W.), Hôpital Henri Mondor, APHP, Créteil; Department of Neurology (M.T.), Hôpital Foch, Suresnes; Department of Neurology (C.L.), CHU Bicêtre; and Department of Neurology (K.H.), Hôpital Pierre Delafontaine, Centre Hospitalier de Saint-Denis, France.

Article Synopsis
  • The study aimed to compare disability progression between primary progressive multiple sclerosis (PPMS) patients treated with anti-CD20 therapies (rituximab and ocrelizumab) and a control group that was untreated.
  • Data was gathered retrospectively from the French MS registry, including factors like time to confirmed disability progression (CDP), relapse rates, and MRI activity in patients from 2016 to 2021.
  • Results showed no significant difference in CDP or MRI activity between treated and untreated groups, although a trend suggested treated patients might experience fewer relapses, warranting further investigation.
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Cyclin-dependent kinase-like 5 (CDKL5) deficiency disorder (CDD) is a neurodevelopmental disease caused by mutations in the X-linked CDKL5 gene and characterized by early-onset epilepsy, intellectual disability, and autistic features. To date, the etiological mechanisms underlying CDD are largely unknown and no effective therapies are available. The Cdkl5 knock-out (KO) mouse has been broadly employed in preclinical studies on CDD; Cdkl5-KO mice display neurobehavioral abnormalities recapitulating most CDD symptoms, including alterations in motor, sensory, cognitive, and social abilities.

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Background: Airflow limitation is the hallmark of obstructive pulmonary diseases, with the distal airways representing a major site of obstruction. Although numerous models of bronchi already exist, there is currently no culture system for obstructive diseases that reproduces the architecture and function of small airways. Here, we aimed to engineer a model of distal airways to overcome the limitations of current culture systems.

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This study aims to assess the sensitivity of epicardial potential-based electrocardiographic imaging (ECGI) to the removal or interpolation of bad leads.We utilized experimental data from two distinct centers. Langendorff-perfused pig (= 2) and dog (= 2) hearts were suspended in a human torso-shaped tank and paced from the ventricles.

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Background: Factors associated with severe COVID-19 infection have been identified; however, the impact of infection on longer-term outcomes is unclear. The objective of this study was to examine the impact of COVID-19 infection on the trajectory of lung function and nutritional status in people with cystic fibrosis (pwCF).

Methods: This is a retrospective global cohort study of pwCF who had confirmed COVID-19 infection diagnosed between January 1, 2020 and December 31, 2021.

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The sensory quality of a wine is mainly based on its aroma and flavor. Sweetness contributes in the gustatory balance of red wines. The investigation of compounds involved in this flavor was based on empirical observations, such as the increase in wine sweetness during yeast autolysis, concomitant to post-fermentation maceration in red winemaking.

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The Insula functions as a multisensory relay involved in socio-emotional processing with projections to sensory, cognitive, emotional, and motivational regions. Notably, the interhemispheric projection from the Insula to the contralateral Insula is a robust yet underexplored connection. Using viral-based tracing neuroanatomy, ex vivo and in vivo electrophysiology, in vivo fiber photometry along with targeted circuit manipulation, we elucidated the nature and role of Insula communication in social and anxiety processing in mice.

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Astrocytes control brain activity via both metabolic processes and gliotransmission, but the physiological links between these functions are scantly known. Here we show that endogenous activation of astrocyte type-1 cannabinoid (CB1) receptors determines a shift of glycolysis towards the lactate-dependent production of D-serine, thereby gating synaptic and cognitive functions in male mice. Mutant mice lacking the CB1 receptor gene in astrocytes (GFAP-CB1-KO) are impaired in novel object recognition (NOR) memory.

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Diet quality and associations with lactate and metabolic syndrome in bipolar disorder.

J Affect Disord

November 2024

Department of Pharmacology and Toxicology, Temerty Faculty of Medicine, University of Toronto, Toronto, ON, Canada; Mitochondrial Innovation Initiative, MITO2i, Toronto, ON, Canada; Department of Psychiatry, University of Toronto, Toronto, ON, Canada. Electronic address:

Background: Nutrition is largely affected in bipolar disorder (BD), however, there is a lack of understanding on the relationship between dietary categories, BD, and the prevalence of metabolic syndrome. The objective of this study is to examine dietary trends in BD and it is hypothesized that diets with increased consumption of seafood and high-fiber carbohydrates will be correlated to improved patient outcomes, and a lower frequency of metabolic syndrome.

Methods: This retrospective cohort study includes two French cohorts.

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Article Synopsis
  • Individuals with bipolar disorders (BD) tend to have a shorter life expectancy, prompting the need for easily measurable markers of accelerated aging like BioAge, calculated from routine blood tests and physical exams.
  • In a study of 2,220 outpatients with BD, results showed that a small percentage had significant BioAge Acceleration, which is linked to factors such as young age, male sex, being overweight, and sleep issues.
  • Further research is needed to confirm these findings with different groups and explore whether improving factors like metabolic health and sleep could impact aging rates in individuals with BD.
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  • The study investigates allergic bronchopulmonary mycoses (ABPM) in patients with cystic fibrosis, focusing on specific IgE responses to five non-Aspergillus molds.
  • Researchers analyzed serum samples from 238 patients across several European countries, finding higher levels of specific IgE in these patients compared to healthy controls.
  • The findings highlight the need for improved diagnostic tools for ABPM, as several cases were identified using a new scoring system, emphasizing the importance of non-A. fumigatus molds in these conditions.
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