Targeting the chemokine receptor CXCR4 with histamine analog to reduce inflammation in juvenile arthritis

IntroductionAmong immune cells, activated monocytes play a detrimental role in chronic and viral-induced inflammatory pathologies, particularly in Juvenile Idiopathic Arthritis (JIA), a childhood rheumatoid arthritis (RA) disease. The uncontrolled activation of monocytes and excessive production of inflammatory factors contribute to the damage of bone-cartilage joints. Despite the moderate beneficial effect of current therapies and clinical trials, there is still a need for alternative strategies targeting monocytes to treat RA.MethodsTo explore such an alternative strategy, we investigated the effects of targeting the CXCR4 receptor using the histamine analog clobenpropit (CB). Monocytes were isolated from the blood and synovial fluids of JIA patients to assess CB's impact on their production of key inflammatory cytokines. Additionally, we administered daily intraperitoneal CB treatment to arthritic mice to evaluate its effects on circulating inflammatory cytokine levels, immune cell infiltrates, joints erosion, and bone resorption, as indicators of disease progression.ResultsOur findings demonstrated that CXCR4 targeting with CB significantly inhibited the spontaneous and induced-production of key inflammatory cytokines by monocytes isolated from JIA patients. Furthermore, CB treatment in a mouse model of collagen-induce arthritis resulted in a significant decrease in circulating inflammatory cytokine levels, immune cell infiltrates, joints erosion, and bone resorption, leading to a reduction in disease progression.DiscussionIn conclusion, targeting CXCR4 with the small amino compound CB shows promise as a therapeutic option for chronic and viral-induced inflammatory diseases, including RA. CB effectively regulated inflammatory cytokine production of monocytes, presenting a potential targeted approach with potential advantages over current therapies. These results warrant further research and clinical trials to explore the full therapeutic potential of targeting CXCR4 with CB-like molecules in the management of various inflammatory diseases

The Cellular Prion Protein Interacts with the Tissue Non-Specific Alkaline Phosphatase in Membrane Microdomains of Bioaminergic Neuronal Cells

BACKGROUND: The cellular prion protein, PrP(C), is GPI anchored and abundant in lipid rafts. The absolute requirement of PrP(C) in neurodegeneration associated to prion diseases is well established. However, the function of this ubiquitous protein is still puzzling. Our previous work using the 1C11 neuronal model, provided evidence that PrP(C) acts as a cell surface receptor. Besides a ubiquitous signaling function of PrP(C), we have described a neuronal specificity pointing to a role of PrP(C) in neuronal homeostasis. 1C11 cells, upon appropriate induction, engage into neuronal differentiation programs, giving rise either to serotonergic (1C11(5-HT)) or noradrenergic (1C11(NE)) derivatives. METHODOLOGY/PRINCIPAL FINDINGS: The neuronal specificity of PrP(C) signaling prompted us to search for PrP(C) partners in 1C11-derived bioaminergic neuronal cells. We show here by immunoprecipitation an association of PrP(C) with an 80 kDa protein identified by mass spectrometry as the tissue non-specific alkaline phosphatase (TNAP). This interaction occurs in lipid rafts and is restricted to 1C11-derived neuronal progenies. Our data indicate that TNAP is implemented during the differentiation programs of 1C11(5-HT) and 1C11(NE) cells and is active at their cell surface. Noteworthy, TNAP may contribute to the regulation of serotonin or catecholamine synthesis in 1C11(5-HT) and 1C11(NE) bioaminergic cells by controlling pyridoxal phosphate levels. Finally, TNAP activity is shown to modulate the phosphorylation status of laminin and thereby its interaction with PrP. CONCLUSION/SIGNIFICANCE: The identification of a novel PrP(C) partner in lipid rafts of neuronal cells favors the idea of a role of PrP in multiple functions. Because PrP(C) and laminin functionally interact to support neuronal differentiation and memory consolidation, our findings introduce TNAP as a functional protagonist in the PrP(C)-laminin interplay. The partnership between TNAP and PrP(C) in neuronal cells may provide new clues as to the neurospecificity of PrP(C) function

Extracorporeal Membrane Oxygenation for Severe Acute Respiratory Distress Syndrome associated with COVID-19: An Emulated Target Trial Analysis.

RATIONALE: Whether COVID patients may benefit from extracorporeal membrane oxygenation (ECMO) compared with conventional invasive mechanical ventilation (IMV) remains unknown. OBJECTIVES: To estimate the effect of ECMO on 90-Day mortality vs IMV only Methods: Among 4,244 critically ill adult patients with COVID-19 included in a multicenter cohort study, we emulated a target trial comparing the treatment strategies of initiating ECMO vs. no ECMO within 7 days of IMV in patients with severe acute respiratory distress syndrome (PaO2/FiO2 <80 or PaCO2 ≥60 mmHg). We controlled for confounding using a multivariable Cox model based on predefined variables. MAIN RESULTS: 1,235 patients met the full eligibility criteria for the emulated trial, among whom 164 patients initiated ECMO. The ECMO strategy had a higher survival probability at Day-7 from the onset of eligibility criteria (87% vs 83%, risk difference: 4%, 95% CI 0;9%) which decreased during follow-up (survival at Day-90: 63% vs 65%, risk difference: -2%, 95% CI -10;5%). However, ECMO was associated with higher survival when performed in high-volume ECMO centers or in regions where a specific ECMO network organization was set up to handle high demand, and when initiated within the first 4 days of MV and in profoundly hypoxemic patients. CONCLUSIONS: In an emulated trial based on a nationwide COVID-19 cohort, we found differential survival over time of an ECMO compared with a no-ECMO strategy. However, ECMO was consistently associated with better outcomes when performed in high-volume centers and in regions with ECMO capacities specifically organized to handle high demand. This article is open access and distributed under the terms of the Creative Commons Attribution Non-Commercial No Derivatives License 4.0 (http://creativecommons.org/licenses/by-nc-nd/4.0/)

Emotional competence and supportive care needs of caregivers in oncology

Le diagnostic de cancer et les traitements associés vont entrainer un bouleversement de la vie du patient mais aussi de son entourage, et en particulier des proches-aidants. Ces derniers devenant « aidant » doivent assumer de nouvelles responsabilités qui peuvent entrainer des problèmes de santé, une altération de leur qualité de vie et ainsi de manière générale des difficultés d’ajustement face à la maladie (e.g., altération du fonctionnement émotionnel, physique, social et professionnel, symptômes somatiques, détresse émotionnelle). Les proches-aidants ont ainsi besoin du soutien des professionnels de santé pour faire face à leur rôle d’aidant mais ils rapportent souvent des besoins en soins de support insatisfaits. Ce travail de thèse, inscrit dans un programme de recherche plus global, vise ainsi à mieux appréhender les besoins en soins de support des proches-aidants de patients atteints d’un cancer et leurs déterminants, à travers notamment l’implication des processus émotionnels. La première étude de ce travail a consisté à valider en français une échelle évaluant les besoins en soins de support des proches-aidants de patients atteints d’un cancer. La deuxième étude visait à déterminer des profils de proches-aidants plus à risques d’avoir au moins un besoin en soins de support insatisfait moyen ou fort selon des facteurs intrapersonnels (i.e., symptômes anxieux-dépressifs) et sociodémographiques et médicales (e.g., âge des patients et des proches-aidants, cancer métastatique ou non). Enfin, la troisième étude visait à tester le modèle théorique, validé en amont auprès des patients, selon lequel les compétences émotionnelles des proches-aidants auraient un effet bénéfique sur leurs besoins en soins de support insatisfaits via moins de symptômes anxieux-dépressifs. Ces résultats montrent l’importance de dépister et prendre en charge les besoins en soins de support des proches-aidants, surtout liés à la prise en charge du patient, à l’information et au soutien psychologique et émotionnel. Certains profils de proches-aidants pourraient représenter une population particulièrement à risques de difficultés qui nécessiteraient une attention particulière des professionnels de santé. Enfin, tenir compte des processus émotionnels, notamment des compétences émotionnelles et des symptômes anxieux-dépressifs, parait important pour la prise en charge en soins de support des proches-aidants.Cancers causes a disruption in the lives of patients and their caregivers. They must assume new responsibilities that can lead to health problems, altered quality of life, and adjustment difficulties (e.g., impaired emotional, physical, social, and professional functioning, somatic symptoms, emotional distress). Thus, caregivers need support from health professionals to cope with their role but they frequently report unmet supportive care needs. This thesis work is a part of a more global research program and aims to better understand the supportive care needs of caregivers of cancer patients and their determinants, in particular through emotional processes. The first study of this work validated the French version of a scale assessing the unmet supportive care needs of caregivers of cancer patients. The second study identified profiles of caregivers at higher risk of having at least one moderate or high unmet supportive care need from intrapersonal factors (i.e. emotional distress) and socio-demographic and medical variables (e.g., age of patients and caregivers, metastatic cancer). Finally, the third study tested the theoretical model of the thesis work, already validated for cancer patients, which considers that the emotional competence of caregivers can reduce their unmet supportive care needs by reducing their anxiety and depression symptoms. The results highlight the importance of identifying and addressing the unmet supportive care needs of caregivers, especially related to cancer care, information, and psychological and emotional support. Some profiles of caregivers may represent a population at higher risk of having difficulties and requiring more attention from professionals. Finally, taking into account emotional processes, including emotional competence and anxiety and depression symptoms, may be essential in the supportive care of caregivers

Compétences émotionnelles et besoins en soins de support des proches-aidants en oncologie

Cancers causes a disruption in the lives of patients and their caregivers. They must assume new responsibilities that can lead to health problems, altered quality of life, and adjustment difficulties (e.g., impaired emotional, physical, social, and professional functioning, somatic symptoms, emotional distress). Thus, caregivers need support from health professionals to cope with their role but they frequently report unmet supportive care needs. This thesis work is a part of a more global research program and aims to better understand the supportive care needs of caregivers of cancer patients and their determinants, in particular through emotional processes. The first study of this work validated the French version of a scale assessing the unmet supportive care needs of caregivers of cancer patients. The second study identified profiles of caregivers at higher risk of having at least one moderate or high unmet supportive care need from intrapersonal factors (i.e. emotional distress) and socio-demographic and medical variables (e.g., age of patients and caregivers, metastatic cancer). Finally, the third study tested the theoretical model of the thesis work, already validated for cancer patients, which considers that the emotional competence of caregivers can reduce their unmet supportive care needs by reducing their anxiety and depression symptoms. The results highlight the importance of identifying and addressing the unmet supportive care needs of caregivers, especially related to cancer care, information, and psychological and emotional support. Some profiles of caregivers may represent a population at higher risk of having difficulties and requiring more attention from professionals. Finally, taking into account emotional processes, including emotional competence and anxiety and depression symptoms, may be essential in the supportive care of caregivers.Le diagnostic de cancer et les traitements associés vont entrainer un bouleversement de la vie du patient mais aussi de son entourage, et en particulier des proches-aidants. Ces derniers devenant « aidant » doivent assumer de nouvelles responsabilités qui peuvent entrainer des problèmes de santé, une altération de leur qualité de vie et ainsi de manière générale des difficultés d’ajustement face à la maladie (e.g., altération du fonctionnement émotionnel, physique, social et professionnel, symptômes somatiques, détresse émotionnelle). Les proches-aidants ont ainsi besoin du soutien des professionnels de santé pour faire face à leur rôle d’aidant mais ils rapportent souvent des besoins en soins de support insatisfaits. Ce travail de thèse, inscrit dans un programme de recherche plus global, vise ainsi à mieux appréhender les besoins en soins de support des proches-aidants de patients atteints d’un cancer et leurs déterminants, à travers notamment l’implication des processus émotionnels. La première étude de ce travail a consisté à valider en français une échelle évaluant les besoins en soins de support des proches-aidants de patients atteints d’un cancer. La deuxième étude visait à déterminer des profils de proches-aidants plus à risques d’avoir au moins un besoin en soins de support insatisfait moyen ou fort selon des facteurs intrapersonnels (i.e., symptômes anxieux-dépressifs) et sociodémographiques et médicales (e.g., âge des patients et des proches-aidants, cancer métastatique ou non). Enfin, la troisième étude visait à tester le modèle théorique, validé en amont auprès des patients, selon lequel les compétences émotionnelles des proches-aidants auraient un effet bénéfique sur leurs besoins en soins de support insatisfaits via moins de symptômes anxieux-dépressifs. Ces résultats montrent l’importance de dépister et prendre en charge les besoins en soins de support des proches-aidants, surtout liés à la prise en charge du patient, à l’information et au soutien psychologique et émotionnel. Certains profils de proches-aidants pourraient représenter une population particulièrement à risques de difficultés qui nécessiteraient une attention particulière des professionnels de santé. Enfin, tenir compte des processus émotionnels, notamment des compétences émotionnelles et des symptômes anxieux-dépressifs, parait important pour la prise en charge en soins de support des proches-aidants

Impact of emotional competence on supportive care needs, anxiety and depression symptoms of cancer patients: a multiple mediation model

PURPOSE: The aim of this study was to test the effect of intrapersonal and interpersonal emotional competence on cancer patients' supportive care needs, as mediated by anxiety and depression symptoms. METHODS: Cross-sectional design: 137 cancer patients (42% breast or ovarian cancer, 58% gastrointestinal cancer) in 4 French hospitals completed the Profile of Emotional Competence (PEC), the Hospital Anxiety and Depression Scale (HADS), and the Supportive Care Needs Survey Short Form (SCNS-SF). Bootstrap methods with PROCESS Macro were used to test multiple mediation models. RESULTS: Emotional competence presented a direct or indirect beneficial effect on the satisfaction of supportive care needs, anxiety and depression symptoms. As expected, anxiety and depression symptoms had also strong positive correlations with unmet needs. All multiple mediation models were significant, except for physical needs: intrapersonal and interpersonal emotional competence impacted anxiety and depression symptoms, which in turn impacted psychological, sexual, care/support, and information needs. CONCLUSIONS: These innovative results show the important effect of patients' emotional competence on their supportive care need satisfaction, as mediated by anxiety and depression. Consequently, patients with high emotional competence may require less psychosocial input from medical clinicians. Thus, emotional competence may be integrated into health models and psychosocial interventions to improve patient adjustment. Further investigation is, however, needed to know which are the most beneficial specific emotional competences and at what point of the cancer pathway

Concilier agricultures et gestion de la biodiversité: Dynamiques sociales, écologiques et politiques

Lancé par le ministère de l’Écologie, le programme de recherche Action publique, Agriculture et Biodiversité a pour but de mieux comprendre les interactions entre politiques publiques et biodiversité sur les territoires agricoles. Il met en évidence la nécessité d’adapter les mesures des politiques agricoles aux conditions régionales et de les intégrer dans des dynamiques sociales collectives. Cet ouvrage présente les résultats de ce programme : cadres réglementaires et outils juridiques en agriculture et environnement, dynamiques sociales de la biodiversité, dynamiques écologiques de la biodiversité et intégration des politiques de biodiversité

Concilier agricultures et gestion de la biodiversité: Dynamiques sociales, écologiques et politiques

Lancé par le ministère de l’Écologie, le programme de recherche Action publique, Agriculture et Biodiversité a pour but de mieux comprendre les interactions entre politiques publiques et biodiversité sur les territoires agricoles. Il met en évidence la nécessité d’adapter les mesures des politiques agricoles aux conditions régionales et de les intégrer dans des dynamiques sociales collectives. Cet ouvrage présente les résultats de ce programme : cadres réglementaires et outils juridiques en agriculture et environnement, dynamiques sociales de la biodiversité, dynamiques écologiques de la biodiversité et intégration des politiques de biodiversité

Détérioration de la Qualité de Vie globale des patients atteints d’un cancer œsogastrique à chaque étape du parcours de soin : résultats de l’étude DETAVIE

National audienc