566 results match your criteria: "Institute of Psychiatry and Neuroscience[Affiliation]"

Neuroinflammation is a hallmark of Alzheimer's disease (AD) and both positive and negative associations of individual inflammation-related markers with brain structure and cognitive function have been described. We aimed to identify inflammatory signatures of CSF immune-related markers that relate to changes of brain structure and cognition across the clinical spectrum ranging from normal aging to AD. A panel of 16 inflammatory markers, Aβ42/40 and p-tau181 were measured in CSF at baseline in the DZNE DELCODE cohort (n = 295); a longitudinal observational study focusing on at-risk stages of AD.

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Presentation and Management of Cerebral Venous Sinus Thrombosis After Supratentorial Craniotomy.

Neurosurgery

January 2024

Department of Neurosurgery, GHU Paris Psychiatrie et Neurosciences, Hôpital Sainte-Anne, Paris, France.

Background And Objectives: Cerebral venous sinus thrombosis (CVST) after supratentorial craniotomy is a poorly studied complication, for which there are no management guidelines. This study assessed the incidence, associated risk factors, and management of postoperative CVST after awake craniotomy.

Methods: This is an observational, retrospective, monocentric analysis of patients who underwent a supratentorial awake craniotomy.

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Photovoice is a type of visual research method which supports participants to reflect upon their experiences by capturing digital images. It is a methodology that is routinely used with groups that could be considered vulnerable, as a way of allowing participants to tell their stories for themselves. This article details the process of conducting a Photovoice study with individuals in recovery from problem substance use and reflects on the methodological benefits and challenges of utilising a visual research methodology with this population.

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Background: Depression is a major global health challenge, affecting over 300 million people worldwide. Current pharmacological and psychotherapeutic interventions have limited efficacy, underscoring the need for novel approaches. Emerging evidence suggests that peak emotional experiences characterized by awe, transcendence, and meaning hold promise for rapidly shifting maladaptive cognitive patterns in depression.

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Kinetic study of membrane protein interactions: from three to two dimensions.

Sci Rep

January 2024

Laboratoire de Physique de l'École normale superieure, École Normale Supérieure, Université Paris Sciences et Lettres, CNRS, Sorbonne Université, Université Paris Cité, F-75005, Paris, France.

Molecular interactions are contingent upon the system's dimensionality. Notably, comprehending the impact of dimensionality on protein-protein interactions holds paramount importance in foreseeing protein behaviour across diverse scenarios, encompassing both solution and membrane environments. Here, we unravel interactions among membrane proteins across various dimensionalities by quantifying their binding rates through fluorescence recovery experiments.

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Versatile and automated workflow for the analysis of oligodendroglial calcium signals.

Cell Mol Life Sci

January 2024

Université Paris Cité, Institute of Psychiatry and Neuroscience of Paris (IPNP), INSERM U1266, "Team: Interactions Between Neurons and Oligodendroglia in Myelination and Myelin Repair", 75014, Paris, France.

Although intracellular Ca signals of oligodendroglia, the myelin-forming cells of the central nervous system, regulate vital cellular processes including myelination, few studies on oligodendroglia Ca signal dynamics have been carried out and existing software solutions are not adapted to the analysis of the complex Ca signal characteristics of these cells. Here, we provide a comprehensive solution to analyze oligodendroglia Ca imaging data at the population and single-cell levels. We describe a new analytical pipeline containing two free, open source and cross-platform software programs, Occam and post-prOccam, that enable the fully automated analysis of one- and two-photon Ca imaging datasets from oligodendroglia obtained by either ex vivo or in vivo Ca imaging techniques.

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Background And Objectives: We assessed the impact of ventricular opening on postoperative complications and survival of carmustine wafer implantation during surgery of newly diagnosed supratentorial glioblastomas, isocitrate dehydrogenase (IDH)-wildtype in adults.

Methods: We performed an observational, retrospective, single-center cohort study at a tertiary surgical neuro-oncological center between January 2006 and December 2021.

Results: One hundred ninety-four patients who benefited from a first-line surgical resection with carmustine wafer implantation were included.

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Characteristics and Prognosis of Tumor-Related Epilepsy During Tumor Evolution in Patients With Wild-Type Glioblastoma.

Neurology

January 2024

From the Université Paris Cité (J.P., A.R., A.M., A.E., E.G., C.O., M.G., M.Z.), Institute of Psychiatry and Neuroscience of Paris (IPNP), INSERM U1266; Departments of Neurosurgery (J.P., A.R., A.M., O.A., A.E., E.P., M.Z.), Neurophysiology (E.G., M.G.), Neuroradiology (C.O.), Neuropathology (A.T.-E., F.C.), and Neurology (G.H.), Hôpital Fondation Adolphe de Rothschild; and Neuroglial Interactions in Cerebral Physiopathology (G.H.), Center for Interdisciplinary Research in Biology, Collège de France, CNRS UMR 7241, INSERM U1050, Université PSL Paris, France.

Background And Objectives: Tumor-related epilepsy is a well-known symptom of glioblastoma. However, the particular characteristics of epileptic seizures related to glioblastoma, ()-wild-type is almost unexplored longitudinally during the whole course of the disease. We assessed tumor-related epilepsy and seizure control during tumor evolution and the prognostic significance of tumor-related epilepsy.

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SNPs-Panel Polymorphism Variations in and Genes Are Not Associated with Prostate Cancer.

Biomedicines

December 2023

Laboratory of Applied Biochemistry and Microbiology, Department of Biochemistry, Faculty of Sciences, Badji Mokhtar University, Annaba 23000, Algeria.

Prostate cancer (PCa) is a major public health problem worldwide. Recent studies have suggested that ghrelin and its receptor could be involved in the susceptibility to several cancers such as PCa, leading to their use as an important predictive way for the clinical progression and prognosis of cancer. However, conflicting results of single nucleotide polymorphisms (SNPs) with ghrelin () and its receptor () genes were demonstrated in different studies.

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Clinical and cognitive characteristics of subjects with schizophrenia and childhood attention-deficit/hyperactivity disorder: Results from the multicentric FACE-SZ cross-sectional dataset.

Schizophr Res

February 2024

Fondation Fondamental, Créteil, France; Université de Paris, INSERM UMR1266, Institute of Psychiatry and Neuroscience of Paris, France; AP-HP, Department of Psychiatry, Louis Mourier Hospital, Colombes, France.

Background: Childhood Attention-deficit/hyperactivity disorder (C-ADHD) is a neurodevelopmental disorder, associated with an increased risk of subsequent schizophrenia. The objective of the present study was to determine the prevalence of C-ADHD in schizophrenia and the clinical and cognitive characteristics associated with C-ADHD history in schizophrenia.

Methods: 569 subjects with schizophrenia (74 % men, mean age 30.

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Familial KCNQ2 mutation: a psychiatric perspective.

Psychiatr Genet

February 2024

Department of Child and Adolescent Psychiatry, Robert Debré Hospital, APHP, Paris.

Article Synopsis
  • * The report details a case of a 5-year-old boy with a deletion mutation in the KCNQ2 gene, diagnosed with seizures, autism, and intellectual deficiency linked to KCNQ2-encephalopathy.
  • * The findings emphasize the need for genetic counseling and psychiatric evaluation to better manage the complex social and behavioral aspects of these conditions.
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Intervention of muscle-building and antifrailty exercise combined with Baduanjin for frailty of different functional levels: study protocol for a randomised controlled trial.

BMJ Open

December 2023

Department of Rehabilitation Medicine, The Second Medical Center & National Clinical Research Center for Geriatric Diseases, Chinese PLA General Hospital, Beijing, China

Introduction: Frailty has been currently considered as a multidimensional concept, including physical, cognitive and social frailty. Frailty has also been associated with a range of adverse events, which might increase the risks of disability, falls, fractures, delirium and death. Increasing evidence has shown that multicomponent exercise training can improve physical and cognitive function, delay or reverse frailty.

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The value of plasma cell-free DNA levels as biomarker in patients with eating disorders: A preliminary study.

Psychoneuroendocrinology

February 2024

Service de Médecine Génomique des Maladies de Système et d'Organe, Fédération de Génétique et de Médecine Génomique, APHP, Centre - Université Paris Cité, Hôpital Cochin, Paris 75014, France; Université Paris Cité, Institute of Psychiatry and Neuroscience of Paris (IPNP), INSERM U1266, Gorwood Team, Paris 75014, France.

Objective: Circulating cell-free DNA (cfDNA) holds promise as a rapid and convenient biomarker for identifying individuals with eating disorders. To investigate this hypothesis, we measured plasma cfDNA in patients with different eating disorders.

Methods: In this study, 110 participants (98 patients with eating disorders divided into 30 patients with bulimia nervosa, 33 patients with anorexia nervosa (AN) Restricting subtype, 35 patients with AN Binge-eating/purging subtype and 12 controls) were enrolled.

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ALS-linked C9orf72-SMCR8 complex is a negative regulator of primary ciliogenesis.

Proc Natl Acad Sci U S A

December 2023

Department of Urology, Institute of Urology, State Key Laboratory of Biotherapy, West China Hospital, College of Life Sciences, Sichuan University, and National Collaborative Innovation Center, Chengdu 610041, People's Republic of China.

Massive GGGGCC (G4C2) repeat expansion in and the resulting loss of C9orf72 function are the key features of ~50% of inherited amyotrophic lateral sclerosis and frontotemporal dementia cases. However, the biological function of C9orf72 remains unclear. We previously found that C9orf72 can form a stable GTPase activating protein (GAP) complex with SMCR8 (Smith-Magenis chromosome region 8).

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Septin proteins are involved in diverse physiological functions, including the formation of specialized cytoskeletal structures. Septin 8 (Sept8) is implicated in spine morphogenesis and dendritic branching through palmitoylation. We explored the role and regulation of a Sept8 variant in human neural-like cells and in the mouse brain.

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Apolipoproteins L1 and L3 control mitochondrial membrane dynamics.

Cell Rep

December 2023

Laboratory of Molecular Parasitology, IBMM, Université Libre de Bruxelles, 6041 Gosselies, Belgium. Electronic address:

Apolipoproteins L1 and L3 (APOLs) are associated at the Golgi with the membrane fission factors phosphatidylinositol 4-kinase-IIIB (PI4KB) and non-muscular myosin 2A. Either APOL1 C-terminal truncation (APOL1Δ) or APOL3 deletion (APOL3-KO [knockout]) reduces PI4KB activity and triggers actomyosin reorganization. We report that APOL3, but not APOL1, controls PI4KB activity through interaction with PI4KB and neuronal calcium sensor-1 or calneuron-1.

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Article Synopsis
  • The paper examines youth e-cigarette (EC) and tobacco cigarette (TC) purchasing trends in Canada, England, and the US, focusing on the effects of changing minimum legal age (MLA) laws from 2017 to 2022.
  • Data was collected from over 104,000 national samples of 16- to 19-year-olds across the three countries, revealing that EC purchasing rose overall, but at varying rates by country.
  • In the US, TC purchasing sharply declined, especially from traditional retail locations, while EC purchases peaked at vape shops, with a notable change after the federal law raised the legal purchasing age to 21 in late 2019.
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Ganglioglioma cells potentiate neuronal network synchronicity and elicit burst discharges via released factors.

Neurobiol Dis

January 2024

Université Paris Cité, Institute of Psychiatry and Neuroscience of Paris (IPNP), INSERM U1266, Neuronal Signaling in Epilepsy and Glioma, 75014 Paris, France. Electronic address:

Gangliogliomas (GGs) represent the most frequent glioneuronal tumor entity associated with chronic recurrent seizures; rare anaplastic GGs variants retain the glioneuronal character. So far, key mechanisms triggering chronic hyperexcitability in the peritumoral area are unresolved. Based on a recent mouse model for anaplastic GG (BRAF, mTOR activation and Trp53) we here assessed the influence of GG-secreted factors on non-neoplastic cells in-vitro.

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Article Synopsis
  • EEG microstates are used to analyze cognitive functions in various psychiatric disorders, and their abnormalities may indicate issues related to mood, psychosis, and autism spectrum disorders.
  • The study will assess diverse groups, including those at high risk for psychosis and healthy controls, using a range of methods including EEG recordings and psychological evaluations over a year-long period.
  • A key focus is to determine if light hypnosis can positively alter unhealthy EEG microstate patterns observed in patients.
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Multi-electrode recording of neural activity in cultures offer opportunities for understanding how the structure of a network gives rise to function. Although it is hypothesized that network size is critical for determining the dynamics of activity, this relationship in human neural cultures remains largely unexplored. By applying new methods for analyzing neural activity to human iPSC derived cultures at either low-densities or high-densities, we uncovered the significant impacts that neuron number has on the individual neurophysiological properties of cells (such as firing rates), the collective behavior of the networks these cultures formed (as measured by entropy), and the relationship between the two.

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Schizophrenia is characterized by the most salient medication adherence problems among severe mental disorders, but limited prospective data are available to predict and improve adherence in this population. This investigation aims to identify predictors of medication adherence over a 1-year period in a large national cohort using clustering analysis. Outpatients were recruited from ten Schizophrenia Expert Centers and were evaluated with a day-long standardized battery including clinician and patient-rated medication adherence measures.

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Purpose: The present study aimed to explore the implicit associations between food and bodily stimuli in patients with anorexia nervosa (AN) and control subjects (HC).

Methods: A Go/No-Go Association Task was administrated to 55 participants (28 AN and 27 HC), using food stimuli (low-calorie food vs. high-calorie food) and body stimuli (underweight vs.

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Aim: Neuroimaging-based machine-learning predictions of psychosis onset rely on the hypothesis that structural brain anomalies may reflect the underlying pathophysiology. Yet, current predictors remain difficult to interpret in light of brain structure. Here, we combined an advanced interpretable supervised algorithm and a model of neuroanatomical age to identify the level of brain maturation of the regions most predictive of psychosis.

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Local glycolysis fuels actomyosin contraction during axonal retraction.

J Cell Biol

December 2023

Université Paris Cité, Institute of Psychiatry and Neuroscience of Paris, INSERM U1266, Laboratory of Dynamics of Neuronal Structure in Health and Disease, Paris, France.

In response to repulsive cues, axonal growth cones can quickly retract. This requires the prompt activity of contractile actomyosin, which is formed by the non-muscle myosin II (NMII) bound to actin filaments. NMII is a molecular motor that provides the necessary mechanical force at the expense of ATP.

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