21 results on '"Fournier V"'
Search Results
2. Effect of early peptide diets on European sea bass (Dicentrarchus labrax) skeletal development
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Printzi, Aliki, Jodet, S., Fournier, V., Collet, Sophie, Madec, Lauriane, Simon, Victor, Zambonino Infante, Jose-luis, Koumoundouros, G., Mazurais, David, Printzi, Aliki, Jodet, S., Fournier, V., Collet, Sophie, Madec, Lauriane, Simon, Victor, Zambonino Infante, Jose-luis, Koumoundouros, G., and Mazurais, David
- Abstract
The mechanisms behind the beneficial effects of dietary peptides on fish skeletal development remain unrevealed. In the present study, we evaluated the effect of 0% (C, Control), 6% (P6) and 12% (P12) levels of small peptide incorporation on European sea bass (Dicentrarchus labrax) early larval skeletal development and post-larval skeletal integrity against a swimming challenge test. Survival was not affected by the peptide diets, whereas P6 presented the lowest growth rate. Larval quality control underlined the advantageous effect of P12 on reducing the frequency of cephalic deformities (e.g., branchiostegal rays, operculum and cross-bite), pre-haemal lordosis and vertebrae bone loss. Simultaneously, individuals from P12 group exhibited an earlier mineralization of the vertebral column and were less prone to develop swimming-induced haemal lordosis (16.0 ± 0.1%) and scoliosis (3.3 ± 0.6%). Expression analysis of genes involved in digestive function, protein transport, muscle ontogeny and bone mineralization revealed a peptide-enhanced larvae development of the P12 group. An early nutritional programming of the post-larval musculoskeletal system is proposed. Limitations induced by the differential free amino-acid profiles are discussed. A potential developmental-stage-specific incorporation of peptide diets in European sea bass rearing is suggested.
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- 2024
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3. Constitution d’une équipe de pharmacie clinique inter-établissement : l’union fait la force… des petites pharmacies à usage intérieur
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Cesbron, S., primary, Petit, M., additional, Papin, N., additional, Metayer, K., additional, Langlais, A., additional, Tessier, P., additional, Choblet, S., additional, and Fournier, V., additional
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- 2022
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4. Systématisation des pratiques de pharmacie clinique dans la prise en charge médicamenteuse des résidents d’établissements d’hébergement pour personnes âgées dépendantes (EHPAD) et en unité de soins longue durée (USLD)
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Cesbron, S., Robin, E., Choblet, S., Telliet, A., and Fournier, V.
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- 2024
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5. Assessing the role of conspiracy beliefs in oncological treatment decisions: An experimental approach.
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Varet F, Fournier V, and Delouvée S
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Cancer is an important issue and a model topic for misinformatfion researchers. The present research experimentally investigates the effect of cancer-related conspiracy beliefs and misinformation on oncology treatment intentions in a cancer-free population. In three pre-registered studies (N total = 1020), participants were asked to put themselves in the shoes of a patient recommended for chemotherapy. Study 1 (N = 300) failed to experimentally manipulate cancer-related conspiracy beliefs with exposure to a health scandal not related to cancer. In Study 2 (N = 258), exposure to a pro-conspiracy (vs. anti-conspiracy) content related to cancer treatment was associated with more conspiracy beliefs, less intention to use chemotherapy and more intentions to use unconventional medicines. Exploratory analyses revealed that these effects were conditioned by the credibility of the misinformation. Study 3 (N = 462) replicated these findings using a full experimental design. Exposure (vs. no exposure) to a warning and accuracy prompt, prior to exposure to the pro-conspiracy content, was found to be effective in reducing its credibility and preventing its detrimental effects. These findings corroborate the existence of an effect of conspiracy beliefs on treatment intentions in oncology and also suggest several ways to mitigate them., (© 2024 The Author(s). Applied Psychology: Health and Well‐Being published by John Wiley & Sons Ltd on behalf of International Association of Applied Psychology.)
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- 2024
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6. Postoperative complications and symptoms of anxiety and depression in patients with gastric and esophageal cancer: a retrospective cohort study.
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Fournier V, Fontesse S, Christophe V, Ramdane N, Anota A, Gauchet A, Lelorain S, Baudry AS, Duprez C, Devaux S, Bergeat D, D'Journo XB, Glehen O, Piessen G, and Grynberg D
- Abstract
Context: Gastric and oesophageal cancers are common. They are also expected to increase in incidence in the next few years and are characterized by poor prognosis. Surprisingly, whereas the incidence of severe anxiety and depression is high in patients with gastric and oesophageal cancers, the influence of symptoms of depression and anxiety on postoperative complications has barely been explored., Methods: In a retrospective study based on a prospectively collected database, 629 cancer patients were enrolled. Symptoms of depression and anxiety (Hospital Anxiety and Depression Scale scores) and sociodemographic and medical information were collected immediately after diagnosis and before any treatment. The surgical approach (i.e. gastrectomy or oesophagectomy) and postoperative complications according to the Clavien-Dindo classification were collected after surgery., Results: After controlling for known medical predictors (i.e. surgical strategy, alcohol and tobacco consumption, American Society of Anaesthesiologists classification physical status score) of postoperative complications, no effect of symptoms of depression or anxiety was detected., Discussion: The observed results are surprising given the literature. However, several potential arguments can be put forwards regarding methods and measures, controlling variables, and conceptual distinctions. Despite the absence of significant results, this topic should be more deeply investigated by applying methodological and conceptual adjustments.
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- 2024
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7. A Pilot Study of UM171-Expanded Cord Blood Grafts for Tandem Auto/Allogeneic Hematopoietic Cell Transplant in High and Ultra-High-Risk Myeloma Patients.
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Roy J, Cohen S, Sauvageau G, Ahmad I, Fournier V, Terra R, Caudrelier P, Thiant S, Thauvette G, Bambace N, Delisle JS, Lachance S, Kiss T, Bernard L, Roy DC, Veilleux O, and LeBlanc R
- Abstract
Multiple myeloma (MM) remains associated with a poor outcome, particularly in patients with advanced disease and high-risk (HR) cytogenetics. To date, the only curative treatment is allogeneic (allo) hematopoietic cell transplantation (HCT), but high incidences of graft versus host disease (GVHD), nonrelapse mortality (NRM) and disease progression remain important obstacles. Cord blood (CB) transplantation has been associated with low rates of relapse and chronic (c) GVHD, but its use has declined because of high incidences of infections, severe acute GVHD and high NRM. In other hematologic malignancies, UM171-expanded CB transplants have led to improved outcomes, allowing for the selection of smaller, better HLA-matched units. We aimed to investigate the safety and feasibility of single UM171-expanded single CB unit transplantation in frontline tandem auto/allo HCT for HR/ultra-HR MM patients. Newly diagnosed MM patients ≤ 65 years with an ISS stage II/III and del(17p), t(4;14), t(14;16), t(14;20), del(1p) or +1q, R-ISS 3, ≥ 2 cytogenetic abnormalities, or plasma cell leukemia without a sibling donor and availability of a 5-7/8 matched CB graft with ≥ 0.5 x 10
5 CD34+/kg and ≥ 1.5 x 107 TNCs/kg were eligible to this phase I/II prospective study (ClinicalTrials.gov NCT03441958). After induction and autologous HCT, patients received a reduced intensity conditioning regimen and were infused with 7-day UM171-expanded CD34+ cells, along with the lymphocytes contained in the CD34-negative fraction. The primary endpoints were feasibility of UM171 expansion, safety, kinetics of engraftment, incidences and maximum grades of acute and cGVHD at 1 and 2 years, assessment of measurable residual disease (MRD) and quality of life (QoL). Between 05/2018 and 11/2021, 20 patients were enrolled. One patient had an unsuccessful CB expansion with UM171, leaving 19 patients with a median age of 56 years. Median CD34+ cell dose infused after expansion was 4.62 x 106 /kg (range: 0.79 to 5.76). Median times to achieve absolute neutrophil counts of 0.1 and 0.5 x 109 /L were D+6 and D+10.5; median time to reach ≥ 20 x 109 /L platelets was D+36. Full donor chimerism was achieved in all cell lineages by D+120 in recipients of reduced intensity conditioning. Cumulative incidences of grade II-IV, grade III-IV acute GVHD and moderate/severe cGVHD at 12 months were 68.4% (95% CI: 46 to 90), 5.3% (95% CI: 0% to 16%), and 10.5% (95% CI: 0% to 25%), respectively. With a median follow-up of 2.9 years (range: 0.46 to 5.3), cumulative incidences of relapse, PFS, OS and NRM at 3 years were 36.8% (95% CI: 14 to 59), 47.4% (95% CI: 29 to 76), 68.4% (95% CI: 50 to 93) and 15.8% (95%CI: 0 to 33), respectively. Median time to complete immunosuppression discontinuation was D+238. No unexpected adverse events were observed. Only one of 7 patients alive at 2 years with negative MRD at transplant has relapsed. Non-relapsing patients had a QoL after transplant similar to the general population. UM171-expanded CB transplant in HR/ultra-HR myeloma patients is feasible and allows the use of single CB units with a low risk of cGVHD. Patients with negative pretransplant MRD might benefit most from a UM171-expanded CB transplant., (Copyright © 2024 The American Society for Transplantation and Cellular Therapy. Published by Elsevier Inc. All rights reserved.)- Published
- 2024
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8. Characterization of the ciliary beating efficiency in primary diffuse chronic rhinosinusitis.
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Renaud M, Venkatasamy A, Escudier E, Mitri-Frangieh R, Filoche M, Fournier V, Papon JF, Coste A, Louis B, and Bequignon E
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Ciliary dysfunction may result in chronic airway inflammation and infection causing injury and structural changes to the airway epithelium, leading to a variety of diseases, like bronchiectasis and primary diffuse chronic rhinosinusitis (CRS). Currently, ciliary beating analysis has mainly been studied through the measure of the ciliary beating frequency (CBF) by high-speed digital video microscopy (HSDV). However, a normal CBF has been described in different forms of primary and acquired ciliary dyskinesia.
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- 2024
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9. Representations of illness and treatments in patients with desmoid tumors: A thematic content analysis of a qualitative study.
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Fournier V, Vansimaeys C, Le Borgne MA, Krieger AE, and Flahault C
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- Humans, Female, Male, Adult, Middle Aged, Aged, France, Adaptation, Psychological, Interviews as Topic, Fibromatosis, Aggressive therapy, Fibromatosis, Aggressive psychology, Qualitative Research, Quality of Life
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Purpose: Desmoid tumors are a rare and complex disease characterized by a great diversity in its forms, localizations, and prognosis. Both the disease and the treatment can have a significant impact on quality of life in patients. Given the complexity of the disease and its rarity, the literature on patients' experience with the disease scarce. The purpose of this study is to investigate illness representations and subjective experience in participants affected with desmoid tumors., Methods: Telephonic semi-directive interviews were used in French patients over 18 years, diagnosed with desmoid tumor. Data were analyzed through a general inductive method to identify emergent general themes in participants' discourse., Results: Participants (8 women, 7 men) in this study were aged between 27 and 71. The analysis revealed eight major themes relative to representations of illness and treatment, live with the illness, the impact of illness on relationships with others, the illness and medical pathways, and the identity changes caused by the illness. The two most salient themes were illness and treatment representations and life with the illness. Those themes were chosen for this study., Conclusions: The results provide new insights on representation of and experience with desmoid tumors in patients. It brings arguments for the necessity of development wider systematic study to explore those variables in a larger sample during all the illness pathway. Indeed, this population meets particular issues appealing for the development of a specific psychosocial support., Competing Interests: Declaration of competing interest None declared., (Copyright © 2024 The Authors. Published by Elsevier Ltd.. All rights reserved.)
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- 2024
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10. Dupilumab prevents nasal epithelial function alteration by IL-4 in vitro: Evidence for its efficacy.
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Fieux M, Carsuzaa F, Bellanger Y, Bartier S, Fournier V, Lecron JC, Bainaud M, Louis B, Tringali S, Dufour X, Coste A, Favot L, and Bequignon E
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- Humans, Middle Aged, Female, Adult, Male, Cilia drug effects, Epithelial Cells drug effects, Cells, Cultured, Chronic Disease, Wound Healing drug effects, Interleukin-4 metabolism, Nasal Mucosa drug effects, Antibodies, Monoclonal, Humanized pharmacology, Interleukin-13 metabolism, Nasal Polyps drug therapy, Rhinitis drug therapy, Rhinitis immunology, Sinusitis drug therapy, Sinusitis immunology
- Abstract
Background: Chronic rhinosinusitis with nasal polyp (CRSwNP) is a typical type 2 inflammation involving interleukin (IL)-4 and IL-13. Dupilumab is a fully human monoclonal antibody targeting IL-4 receptor α subunit, thereby blocking signaling by both cytokines. Our hypothesis was that IL-4 and IL-13, by inducing a severe epithelial dysregulation, are involved in CRSwNP pathogenesis. This study aimed to evaluate the in vitro direct effect of IL-4, IL-13, and dupilumab on nasal epithelial functions., Methods: Nasal polyps and control mucosa from 28 patients, as well as human nasal epithelial cells (HNEC) from 35 patients with CRSwNP were used. Three major epithelial functions were investigated: the epithelial barrier function (characterized by transepithelial electrical resistance measurements and tight junction protein expression), the ciliary motion (characterized by the ciliary beating efficiency index), and wound healing (characterized by the wound repair rate) under various stimulations (IL-4, IL-13, and dupilumab). The main outcome was a significant change in epithelial functions following exposure to IL-4, IL-13, and dupilumab for 48 h in the basal media., Results: IL-4 (1, 10, and 100 ng/mL) but not IL-13 induced a significant decrease in occludin and zonula-occludens protein expression, ciliary beating efficiency, and wound repair rate in HNEC. Dupilumab (0.04 mg/mL) had no effect on HNEC and specifically restored all epithelial functions altered when cells were exposed to a 48-h IL-4 stimulation., Conclusion: Dupilumab, in vitro, restored epithelial integrity by counteracting the effect of IL-4 on the epithelial barrier (increased epithelial permeability, decreased ciliary beating efficiency, and decreased wound repair rate)., (© 2024 The Authors. International Forum of Allergy & Rhinology published by Wiley Periodicals LLC on behalf of American Academy of Otolaryngic Allergy and American Rhinologic Society.)
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- 2024
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11. Conspiracy beliefs and intention to use conventional, complementary and alternative medicines: Two vignette studies.
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Fournier V and Varet F
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- Male, Humans, Female, Adult, Adolescent, Child, Intention, Neoplasms
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Objective: Conspiracy beliefs (CBs) can have substantial consequences on health behaviours by influencing both conventional and non-conventional medicine uptake. They can target powerful groups (i.e. upward CBs) or powerless groups (i.e. downward CBs). Considering their repercussions in oncology, it appears useful to understand how CBs are related to the intentions to use conventional, complementary and alternative medicines (CAM)., Design and Methods: This paper includes two pre-registered online correlational studies on a general French population (Study 1 N = 248, recruited on social media M
age = 40.07, SDage = 14.78; 205 women, 41 men and 2 non-binaries; Study 2 N = 313, recruited on social media and Prolific, Mage = 28.91, SDage = 9.60; 154 women, 149 men and 10 non-binaries). We investigated the links between generic and chemotherapy-related CBs and intentions to use conventional, complementary and alternative medicines. Study 2 consisted of a conceptual replication of Study 1, considering the orientation of CBs., Results: Generic CBs and chemotherapy-related CBs appear strongly and positively correlated, negatively correlated with intentions to take conventional medicine and positively with intentions to take CAM. The link between generic CBs and medication intention is fully mediated by chemotherapy-related CBs. When distinguished, upward CBs are a stronger predictor of chemotherapy-related CBs than downward CBs., Conclusions: The findings suggest that intentions to use medicine are strongly associated with CBs. This has several important implications for further research and practice, notably on the presence and effects of CBs on medication behaviours in cancer patients., (© 2023 The Authors. British Journal of Health Psychology published by John Wiley & Sons Ltd on behalf of British Psychological Society.)- Published
- 2024
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12. Make me more comfortable: effects of a hypnosis session on pain perception in chronic pain patients.
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Ogez D, Landry M, Caron-Trahan R, Jusseaux AE, Aubin M, Véronneau J, Fournier V, Godin N, Idrissi M, Rainville P, and Richebé P
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Introduction: Approximately one-quarter of Canadians experience chronic pain, a debilitating condition often necessitating opioid use, which raises concerns regarding dependency and overdose risks. As an alternative, we developed the HYlaDO program (Hypnose de la Douleur, hypnosis of Pain in French), a novel self-hypnosis approach for chronic pain management. The development of this program followed the ORBIT model, a comprehensive framework for designing interventions encompassing several phases ranging from design to efficacy assessment., Methods: In the present work, we conducted a preliminary evaluation of the HYlaDO program with 21 participants (18 of the 21 patients were included in the analysis). The primary objective was to determine one session of the program's effectiveness in altering pain, anxiety and relaxation via pre-post analysis. The secondary goal was to examine the long-term effects across the same measures, in addition to the overall quality of life., Results: The results highlight the benefits of our approach, while participants reported short-term significant pain reduction, decreased anxiety, and increased relaxation. Additionally, preliminary trends suggest improvements in physical activity and quality of life metrics., Discussion: These positive outcomes highlight HYlaDO's potential as an alternative to opioid therapy for chronic pain. Encouraged by these results, we aim to extend our research to a broader and more diverse cohort, paving the way for comprehensive randomized controlled trials. This expansion will further validate HYlaDO's efficacy and its role in transforming chronic pain management., Competing Interests: The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest., (Copyright © 2024 Ogez, Landry, Caron-Trahan, Jusseaux, Aubin, Véronneau, Fournier, Godin, Idrissi, Rainville and Richebé.)
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- 2024
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13. Anogenital distribution of mucosal HPV in males and females before and after renal transplantation.
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Prétet JL, Touzé A, Pazart L, Boiteux G, Fournier V, Vidal C, Arnold F, Ducloux D, Lepiller Q, and Mougin C
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- Male, Humans, Female, Papillomaviridae genetics, DNA, Papillomavirus Infections epidemiology, Kidney Transplantation adverse effects
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Introduction: Immunosuppressive drugs taken by transplant recipients may favor HPV infection at anogenital sites. HPV-type prevalence was studied in males and females before and after renal transplantation., Patients and Methods: Anal, cervical and penile samples were taken from 62 patients before transplantation and from 41 patients after transplantation. HPV DNA was investigated using the INNO-LiPA HPV genotyping extra test and HPV-type distribution determined., Results: Before transplantation, up to 30% of analyzed samples harbored HPV DNA, with the highest prevalence found in cervical specimens (60%). After transplantation, a trend toward HPV clearance was observed in females. By contrast, a trend toward incident infections by a wide variety of HPV genotypes at the penis and anal level was documented in men., Conclusion: High prevalence of HPV at anogenital sites was documented before and after renal transplantation. Immunosuppressive drugs taken after transplantation may impact HPV acquisition or reactivation, especially in males. Special attention should be paid in view of preventing HPV-associated diseases in this vulnerable population., Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (Copyright © 2023 Elsevier Masson SAS. All rights reserved.)
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- 2024
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14. Pre- and postsynaptic nanostructures increase in size and complexity after induction of long-term potentiation.
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Clavet-Fournier V, Lee C, Wegner W, Brose N, Rhee J, and Willig KI
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Synapses, specialized contact sites between neurons, are the fundamental elements of neuronal information transfer. Synaptic plasticity involves changes in synaptic morphology and the number of neurotransmitter receptors, and is thought to underlie learning and memory. However, it is not clear how these structural and functional changes are connected. We utilized time-lapse super-resolution STED microscopy of organotypic hippocampal brain slices and cultured neurons to visualize structural changes of the synaptic nano-organization of the postsynaptic scaffolding protein PSD95, the presynaptic scaffolding protein Bassoon, and the GluA2 subunit of AMPA receptors by chemically induced long-term potentiation (cLTP) at the level of single synapses. We found that the nano-organization of all three proteins increased in complexity and size after cLTP induction. The increase was largely synchronous, peaking at ∼60 min after stimulation. Therefore, both the size and complexity of individual pre- and post-synaptic nanostructures serve as substrates for tuning and determining synaptic strength., Competing Interests: The authors declare no competing interests., (© 2023 The Authors.)
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- 2023
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15. Are digital health interventions valuable to support patients with cancer and caregivers? An umbrella review of web-based and app-based supportive care interventions.
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Fournier V, Duprez C, Grynberg D, Antoine P, and Lamore K
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- Adult, Humans, Child, Caregivers, Digital Health, Quality of Life, Internet, Mobile Applications, Neoplasms therapy
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Background: Digital health technologies have expanded tremendously in the last two decades, creating an emerging research and clinical field. They are regarded as cost-effective, and their use in healthcare is prioritized by many countries. However, the constant evolution of these technologies has led to an abundance of related literature. Thus, we conducted an umbrella review to identify and characterize digital supportive care interventions for patients with cancer and their relatives., Methods: A preregistered umbrella review was conducted (PROSPERO registration number CRD42022333110). Five databases were searched (Embase, PsycINFO, PubMed, CINAHL, and the Cochrane Library). To be considered, studies had to be systematic reviews or meta-analyses, be performed on pediatric or adult patients with cancer or survivors or their relatives, report results on web-based or app-based supportive care interventions, and measure psychological, functional, or behavioral variables or quality of life related to cancer. The methodological quality of the studies was assessed using the AMSTAR-2 tool., Findings: Twenty eligible studies were identified. Most of the included studies reported results from adult patients with cancer. Globally, digital interventions were shown to be effective for physical activity in patients with cancer but had mixed results regarding emotional outcomes and quality of life. Additionally, a lack of methodological quality was noted for most of the included reviews., Discussion: Digital supportive care interventions could be an effective tool in cancer care for some outcomes. Recommendations have been formulated for further research in this field using adapted methodologies for the development of digital health interventions., (© 2023 The Authors. Cancer Medicine published by John Wiley & Sons Ltd.)
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- 2023
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16. Happy thus survivor? A systematic review and meta-analysis on the association between cancer survival and positive states, emotions, and traits.
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Fontesse S, Fournier V, Gérain P, Dassonneville C, Lelorain S, Duprez C, Christophe V, Piessen G, and Grynberg D
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- Humans, Prognosis, Happiness, Emotions, Neoplasms psychology
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Objectives: Traditionally, the literature investigating patient-reported outcomes in relation to cancer survival focused on negative factors such as distress. Meta-analyses in this field have provided a clear identification of negative affect that reduce cancer survival (e.g., depression). Nevertheless, positive psychological factors and especially positive affect might be equally crucial for cancer survival but have been neglected so far. While studies in this domain have been conducted, they remain less numerous and have produced mixed results., Methods: A pre-registered systematic review and meta-analysis (https://osf.io/jtw7x) aimed at identifying the positive affect linked to mortality in cancers were conducted. Four databases (Pubmed, PsycINFO, Embase, and Cochrane Library) were searched to find longitudinal studies linking positive affect to survival in cancers. Two reviewers completed each stage of the study selection process, the data extraction, and the Quality in Prognosis Studies risk of bias assessments., Results: Twenty-four studies involving 822,789 patients were included based on the 2462 references identified. The meta-analysis reveals that positive affect is associated with longer survival (Hazard Ratio [HR] = 0.91; 95% CI [0.86, 0.96], z = -3.58, p < 0.001) and lower mortality (Odd Ratio [OR] = 0.59; 95% CI [0.45, 0.78], z = -3.70, p < 0.001). Sub-group analyses indicated that the main predictors of survival are emotional and physical well-being, optimism, and vitality., Conclusion: This work emphasizes the need to consider the role of affective mechanisms in patients with cancer, including their levels of well-being or optimism to provide the most favorable conditions for survival. Therefore, stronger and continuous effort to improve patients' positive affect could be particularly beneficial for their life expectancy., (© 2023 The Authors. Psycho-Oncology published by John Wiley & Sons Ltd.)
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- 2023
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17. Control of Phytonemus pallidus (Acari: Tarsonemidae) from strawberry transplants using controlled atmosphere temperature treatment.
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Bernier V, Lefebvre N, Khelifi M, Renkema J, and Fournier V
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Since it inhabits young leaves and buds of strawberry (Fragaria × ananassa Duchesne) crowns, cyclamen mite (Phytonemus pallidus Banks) is a difficult pest to control with biological or chemical means once it is present in a field. Controlled atmosphere temperature treatment (CATT) is a successful technique that has been commercially used in the Netherlands for nearly 2 decades to disinfect strawberry nursery stock, including elimination of cyclamen mite. During CATT, plants are treated at 35 °C, 50% CO2, and 10% O2 under high relative humidity for 48 h. The objective of this study was to test CATT against P. pallidus in North America at a scale that can be easily used on-farms by strawberry growers. Two greenhouse experiments were conducted where infested trayplants were treated with CATT or the acaricide abamectin, and P. pallidus number were compared to control plants. Plants were destructively sampled after 4 weeks, and CATT reduced mobile forms of P. pallidus by 99.9% in both experiments. Abamectin used in the first experiment had an efficacy of 95.5%. Our findings suggest that CATT is effective at nearly eliminating P. pallidus from strawberry planting material, and its application could reduce risks of field infestations and the need for multiple acaricide applications. While our results are encouraging, additional research is needed to assess the effects of CATT on strawberry plant survival, growth, and fruit production., (© The Author(s) 2023. Published by Oxford University Press on behalf of Entomological Society of America. All rights reserved. For permissions, please e-mail: journals.permissions@oup.com.)
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- 2023
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18. Characterizing the blood-brain barrier and gut barrier with super-resolution imaging: opportunities and challenges.
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Doney E, Bernatchez R, Clavet-Fournier V, Dudek KA, Dion-Albert L, Lavoie-Cardinal F, and Menard C
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Brain and gut barriers have been receiving increasing attention in health and diseases including in psychiatry. Recent studies have highlighted changes in the blood-brain barrier and gut barrier structural properties, notably a loss of tight junctions, leading to hyperpermeability, passage of inflammatory mediators, stress vulnerability, and the development of depressive behaviors. To decipher the cellular processes actively contributing to brain and gut barrier function in health and disease, scientists can take advantage of neurophotonic tools and recent advances in super-resolution microscopy techniques to complement traditional imaging approaches like confocal and electron microscopy. Here, we summarize the challenges, pros, and cons of these innovative approaches, hoping that a growing number of scientists will integrate them in their study design exploring barrier-related properties and mechanisms., (© 2023 The Authors.)
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- 2023
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19. Effect of Early Peptide Diets on Zebrafish Skeletal Development.
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Printzi A, Koumoundouros G, Fournier V, Madec L, Zambonino-Infante JL, and Mazurais D
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- Animals, Diet, Peptides pharmacology, Larva, Zebrafish, Animal Feed analysis
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Incorporation of dietary peptides has been correlated with decreased presence of skeletal abnormalities in marine larvae. In an attempt to clarify the effect of smaller protein fractions on fish larval and post-larval skeleton, we designed three isoenergetic diets with partial substitution of their protein content with 0% (C), 6% (P6) and 12% (P12) shrimp di- and tripeptides. Experimental diets were tested in zebrafish under two regimes, with inclusion (ADF-Artemia and dry feed) or lack (DF-dry feed only) of live food. Results at the end of metamorphosis highlight the beneficial effect of P12 on growth, survival and early skeletal quality when dry diets are provided from first feeding (DF). Exclusive feeding with P12 also increased the musculoskeletal resistance of the post-larval skeleton against the swimming challenge test (SCT). On the contrary, Artemia inclusion (ADF) overruled any peptide effect in total fish performance. Given the unknown species' larval nutrient requirements, a 12% dietary peptide incorporation is proposed for successful rearing without live food. A potential nutritional control of the larval and post-larval skeletal development even in aquaculture species is suggested. Limitations of the current molecular analysis are discussed to enable the future identification of the peptide-driven regulatory pathways.
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- 2023
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20. Host Range and Phenology of Sugarcane Aphid (Hemiptera: Aphididae) and Natural Enemy Community in Sorghum in Haiti.
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Exilien R, Brodeur J, Fournier V, and Martini X
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- Animals, Haiti, Host Specificity, Edible Grain, Aphids, Sorghum, Saccharum
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To determine the factors leading to outbreaks of the sugarcane aphid, Melanaphis sacchari, (Zehntner) (Hemiptera: Aphididae) in sorghum in Haiti, a survey was carried out on farms during two cropping seasons, spring and fall of 2018. A total of 45 plots in three Haitian regions were monitored from the five-leaf stage to grain ripening. Infestation with M. sacchari was significantly higher in spring than in fall, except in one location. Melanaphis sacchari populations varied significantly according to phenological stages of sorghum, with significantly higher abundance during the heading and flowering stages than other stages. In and around sorghum fields, the sugarcane aphid was observed on plants from three families: Poaceae, Malvaceae, and Cucurbitaceae. Aphid natural enemies found in sorghum fields consisted of eight species of ladybeetles (Coleoptera: Coccinellidae), one hoverfly (Diptera: Syrphidae), one lacewing (Neuroptera: Chrysopidae), and one predatory midge (Diptera: Cecidomyiidae). In addition to these predators, two parasitoid species, Adialytus sp. (Hymenoptera: Braconidae) and Pachyneuron aphidis (Bouché) (Hymenoptera: Pteromalidae), emerged from sugarcane aphid mummies. Predator and parasitoid densities were highly affected by growing season, with most of the biological control happening in fall. This study provides insights on sugarcane aphid management in Haiti and the Caribbean Islands., (© The Author(s) 2022. Published by Oxford University Press on behalf of Entomological Society of America. All rights reserved. For permissions, please e-mail: journals.permissions@oup.com.)
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- 2022
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21. Lessons learned from two feasibility trials of a translated and minimally monitored iCBT program for young adults among community and university samples.
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LeBlanc J, Talbot F, Fournier V, Titov N, and Dear BF
- Abstract
Young adults are less likely to use traditional mental health services than adults. iCBT may be more youth friendly, but its access remains limited in several countries. This study aims to evaluate the feasibility of a minimally monitored transdiagnostic iCBT program translated from English to French and offered in Canada for the treatment of anxiety and depression among young adults. The impact of the program on resilience was also assessed. Twenty-five participants from community and university samples were included in the analyses in two separate single-group feasibility trials with a 3-month follow-up. Feasibility outcomes were attrition, adherence, treatment acceptability and treatment gains. Outcome measures included the Patient Health Questionnaire 9-item (PHQ-9), Generalized Anxiety Disorder 7-item (GAD-7) and Connor-Davidson Resilience Scale (CD-RISC). In Trial 1 (N = 10), recruiting among the general population proved to be challenging. Low adherence (20%) and high attrition (80%) rates were observed. Methodological changes to recruitment were made and a second trial was conducted among university students using incentives (N = 15). About half of the participants completed treatment (55%, n = 8/15), 12/15 provided post-treatment data and 8/15 provided 3-month follow-up data. All study completers (100%; n = 14) reported they would recommend the program. Mixed effects model analyses revealed significant and large pre-post treatment reductions on the PHQ-9 and GAD-7 (Cohen's d = 1.09 and 1.64 respectively) with treatment gains maintained at follow-up. Moderate improvements were found on the CD-RISC post-treatment with further gains at follow-up (ds = 0.55 and 1.10 respectively). These finding suggest that future research on this French-Canadian version of the Mood Mechanic Course is feasible with appropriate attention to recruitment. Translating existing iCBT interventions and using minimal monitoring may be an optimal first step to initiate the cross-cultural dissemination of iCBT while increasing access to treatments among young adults. Lessons learned are discussed., Competing Interests: The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (© 2022 Published by Elsevier B.V.)
- Published
- 2022
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