Publications by authors named "OLIVIER C"

Background: Though widely used, resting heart rate (RHR), as measured by a wearable device, has not been previously evaluated in a large cohort against a variety of important baseline characteristics.

Objective: This study aimed to assess the validity of the RHR measured by a wearable device compared against the gold standard of ECG (electrocardiography), and assess the relationships between device-measured RHR and a broad range of clinical characteristics.

Methods: The Project Baseline Health Study (PHBS) captured detailed demographic, occupational, social, lifestyle, and clinical data to generate a deeply phenotyped cohort.

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Background: We explored preferences around the benefit-risk ratio (BRR) of vaccination among the general adult population and health care sector workers (HCSWs). We estimated preference weights and expected vaccine uptake for different BRR levels for a vaccine recommended during an infectious disease emergence. In addition, we explored how far qualitative information about disease severity, epidemiological context, and indirect protection interacts with these preferences.

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  • The study focuses on the osteochondral interface, which includes calcified cartilage (CC) and subchondral bone (SCB), and presents a new method for analyzing chondrocyte and osteocyte lacunae in human knee samples using advanced imaging techniques.
  • Researchers employed a combination of a marker-controlled watershed algorithm and deep learning (specifically nnU-Net) to enhance the 3D segmentation of cell lacunae, effectively improving the assessment of their structures.
  • Findings showed that while chondrocyte characteristics didn't differ significantly between control and osteoarthritic knees, osteocytes in the osteoarthritic group exhibited lower anisotropy and tended to be more spherical,
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Cardiogenic shock (CS) is a devastating and fatal complication of acute myocardial infarction (AMI). CS can affect the pharmacokinetics and pharmacodynamics of medications. The unique properties of cangrelor make it the optimal P2Y12 inhibitor for CS-AMI, in terms of both efficacy and safety.

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This study proposes an approach for developing or improving performance management and measurement systems (PMMSs) for healthcare organisations. First, data is collected to analyse and understand the current organisation's performance management system. Second, the SWOT (Strengths, Weaknesses, Opportunities, Threats) method is used to identify the main aspects of the performance management system to be improved.

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  • The study evaluates the effectiveness of a treatment regimen (ixazomib, thalidomide, and dexamethasone) followed by maintenance with ixazomib after salvage autologous hematopoietic stem-cell transplantation (HSCT) for patients with relapsed multiple myeloma, compared to observation.
  • Conducted as part of a larger trial (Myeloma XII) across 79 UK hospitals, it involved patients aged 18+ with measurable disease and certain health criteria, randomized into two treatment groups.
  • The primary measurement for effectiveness was progression-free survival, with safety assessments also being conducted, and a total of 206 patients participated in this phase of the trial.
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Objectives: Physical performance tests are predictive of mortality and may screen for certain health conditions (e.g., sarcopenia); however, their diagnostic and/or prognostic value has primarily been studied in age-limited or disease-specific cohorts.

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  • - Osteocytes play a crucial role in bone mechanobiology by communicating mechanical signals through the interconnected lacunocanalicular network (LCN) filled with interstitial fluid.
  • - This study aimed to gather detailed morphological data on the human LCN using advanced imaging techniques, specifically measuring 27 femoral bone samples with a 100 nm voxel size.
  • - Results showed variability in canalicular morphology, with some differences between males and females, although only larger canaliculi were detected; this research is groundbreaking as it presents new data for further investigations on LCN permeability.
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Introduction: Amid the global health crisis, HIV/TB co-infection presents significant challenges, amplifying the burden on patients and healthcare systems alike. Metabolomics offers an innovative window into the metabolic disruptions caused by co-infection, potentially improving diagnosis and treatment monitoring.

Aim: This study uses untargeted metabolomics to investigate the urinary metabolic signature of HIV/TB co-infection, enhancing understanding of the metabolic interplay between these infections.

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  • Response inhibition plays a key role in executive control and affects gait initiation, which the study focused on.
  • Researchers examined the effects of proactive and reactive inhibitory control during gait initiation using kinematics and EEG data from 23 healthy adults.
  • Findings indicated that uncertainty in the Go condition led to slower reaction times and influenced EEG activity, showcasing the complexity of inhibitory control during gait initiation.
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Background: People in correctional settings are a key population for HIV epidemic control. We sought to demonstrate scale-up of universal test and treat in correctional facilities in South Africa and Zambia through a virtual cross-sectional analysis.

Methods: We used routine data on 2 dates: At the start of universal test and treat implementation (time 1, T1) and 1 year later (time 2, T2).

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Background: Across various stages of the COVID-19 pandemic and related vaccine recommendations in France, we assessed the association of the 7C-psychological antecedents with vaccine uptake/intention for booster vaccination among healthcare-sector workers (HCSWs). We also assessed whether 7C-antecedent profiles changed over time.

Methodology: The Research Group for the Prevention of Occupational Infections in Healthcare Workers (GERES) conducted three repeated web-surveys which were disseminated by email chain-referral among HCSWs throughout France.

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Early sowing can help summer crops escape drought and can mitigate the impacts of climate change on them. However, it exposes them to cold stress during initial developmental stages, which has both immediate and long-term effects on development and physiology. To understand how early night-chilling stress impacts plant development and yield, we studied the reference sunflower line XRQ under controlled, semi-controlled and field conditions.

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Background: This study aimed to evaluate the association of antiphospholipid antibodies (aPL) and conventional markers of coagulation with ischemic and bleeding risk in patients with atrial fibrillation (AF) undergoing percutaneous coronary intervention (PCI).

Methods: In this prospective two-center observational cohort study, patients with AF and an indication for oral anticoagulation (OAC) were enrolled after PCI. Blood was drawn on day 1-3 after PCI.

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  • Twin pregnancies carry higher risks for mothers and babies, and delivery methods can vary based on factors like amnionicity and fetal presentation.
  • This study compared outcomes from two European centers, one favoring cesarean sections (Italy) and the other offering vaginal delivery (Belgium) for non-cephalic second twins.
  • Despite higher cesarean rates in Italy, both centers reported similar severe adverse neonatal outcomes, though the Belgian group faced higher NICU admissions and respiratory issues.
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Importance: For the design of a randomized clinical trial (RCT), estimation of the expected event rate and effect size of an intervention is needed to calculate the sample size. Overestimation may lead to an underpowered trial.

Objective: To evaluate the accuracy of published estimates of event rate and effect size in contemporary cardiovascular RCTs.

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Introduction: Awareness influences the evolution of neurodegenerative dementias. We gathered participants' and caregivers assessments of dependence in daily activities and we studied how each score would be related to next year participant autonomy, independently of other explicative variables.

Method: We retrospectively analyzed data from mildly demented participants with a clinical diagnosis of Alzheimer's disease (AD, = 186) and frontotemporal dementia (FTD, = 29) and their relatives.

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In plant-microbe-insect systems, plant-mediated responses involve the regulation and interactions of plant defense signaling pathways of phytohormones jasmonic acid (JA), ethylene (ET), and salicylic acid (SA). Phytoplasma subgroup 16SrI is the causal agent of Aster Yellows (AY) disease and is primarily transmitted by populations of aster leafhoppers (Macrosteles quadrilineatus Forbes). Aster Yellows infection in plants is associated with the downregulation of the JA pathway and increased leafhopper oviposition.

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Moral or ethical questions are vital because they affect our daily lives: what is the best choice we can make, the best action to take in a given situation, and ultimately, the best way to live our lives? Health ethics has contributed to moving ethics toward a more experience-based and user-oriented theoretical and methodological stance but remains in our practice an incomplete lever for human development and flourishing. This context led us to envision and develop the stance of a "living ethics", described in this inaugural collective and programmatic paper as an effort to consolidate creative collaboration between a wide array of stakeholders. We engaged in a participatory discussion and collective writing process known as instrumentalist concept analysis.

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  • High on-clopidogrel platelet reactivity (HPR) is linked to ischemic risks in patients undergoing percutaneous intervention (PCI), especially those with atrial fibrillation (AF) who are on oral anticoagulants.
  • In a study involving 159 patients, only 1% exhibited HPR, while the majority had low platelet reactivity, indicating overall low aggregability in this group.
  • The results suggested that traditional HPR definitions may not be suitable for these patients, and that monitoring platelet aggregation might help assess bleeding risks rather than ischemic events.
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Explaining the evolution of primate social organization has been fundamental to understand human sociality and social evolution more broadly. It has often been suggested that the ancestor of all primates was solitary and that other forms of social organization evolved later, with transitions being driven by various life history traits and ecological factors. However, recent research showed that many understudied primate species previously assumed to be solitary actually live in pairs, and intraspecific variation in social organization is common.

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Living labs are interdisciplinary and participatory initiatives aimed at bringing research closer to practice by involving stakeholders in all stages of research. Living labs align with the principles of participatory research methods as well as recent insights about how participatory ways of generating knowledge help to change practices in concrete settings with respect to specific problems. The participatory, open, and discussion-oriented nature of living labs could be ideally suited to accompany ethical reflection and changes ensuing from reflection.

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Background: Biological therapies have revolutionized the treatment of severe asthma with type 2 inflammation. Although such treatments are very effective in reducing exacerbation and the dose of oral steroids, little is known about the persistence of symptoms in severe asthma patients treated with biologics.

Purpose: We aim to describe asthma control and healthcare consumption of severe asthma patients treated with biologics.

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Support for vaccine decision-making requires a tailored approach taking into account psychological antecedents of vaccine acceptance. We aimed at validating an extended 7C-model of antecedents in three different target population groups (healthcare workers [n = 3870], parents [n = 2002] and adolescents [n = 7118]) and two vaccinations (COVID-19, HPV) in France. We performed a secondary analysis of questionnaires collecting sociodemographic characteristics, attitudes and knowledge on vaccination, and vaccine status and intention.

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  • Intensive use of pesticides leads to environmental contamination and significant health risks due to exposure to chemical residues, particularly affecting the liver, which is crucial for metabolizing these substances.
  • A study on a mixture of seven common pesticides revealed strong cytotoxic effects on liver cells, primarily caused by manganese-containing dithiocarbamates (maneb and mancozeb), even at low concentrations.
  • The mechanism of toxicity involves oxidative stress and intrinsic apoptosis triggered by altered manganese and zinc levels due to the metabolization of these pesticides, with potential protective effects from zinc supplementation.
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