Publications by authors named "Laroche J"

Background: The objective of this study was to determine the factors associated with low or no parental intention to vaccinate children of 0-4-years in Canada with a COVID-19 vaccine through the 2022 Childhood COVID-19 Immunization Coverage Survey (CCICS). The CCICS was conducted prior to the introduction of a COVID-19 vaccine and a vaccine recommendation for this age group.

Methods: Simple and multiple logistic regression models were used to determine associations between sociodemographic factors as well as knowledge, attitudes and beliefs and low/no intentions to vaccinate against COVID-19 among parents of children 0-4 years.

View Article and Find Full Text PDF

UCYN-A (or Atelocyanobacterium thalassa) has been recognized as a globally distributed, early stage, nitrogen-fixing organelle (the "nitroplast") of cyanobacterial origin present in the haptophyte alga . Although the nitroplast was recognized as UCYN-A2, not all sublineages of UCYN-A have been confirmed as nitroplasts, and full genomes are still lacking for several known sublineages. We investigated the differences between UCYN-A sublineages by sequencing and assembly of metagenomic sequences acquired from cultured biomass from NW Atlantic seawater, which yielded near-complete Metagenome Assembled Genomes (MAGs) corresponding to UCYN-A1, -A4, and the plastid of the UCYN-A4-associated Weekly time-series data paired with the recurrence of specific microbes in cultures used for metagenomics gave further insight into the microbial community associated with the algal/UCYN-A complex.

View Article and Find Full Text PDF
Article Synopsis
  • Creativity is essential for adapting in the 21st century, but there's a lack of practical understanding on how to implement creativity theories effectively.
  • The paper identifies gaps in current literature, especially regarding the separate treatment of individual and group creativity, and highlights the importance of disrupting habitual behaviors for fostering creativity.
  • The authors propose a new framework based on dynamical systems, emphasizing "de-synchronization" as a method to enhance creativity through collective practices like music and dance improvisation, which could also apply to other creative contexts.
View Article and Find Full Text PDF

Cobalamin influences marine microbial communities because an exogenous source is required by most eukaryotic phytoplankton, and demand can exceed supply. Pseudocobalamin is a cobalamin analogue produced and used by most cyanobacteria but is not directly available to eukaryotic phytoplankton. Some microbes can remodel pseudocobalamin into cobalamin, but a scarcity of pseudocobalamin measurements impedes our ability to evaluate its importance for marine cobalamin production.

View Article and Find Full Text PDF

This editorial outlines the outcome of an interdisciplinary session on collective sense-making through dance improvisation, which took place during the 'Neural and Social Bases of Creative Movement' workshop. We argue that joint improvisation practices place the scientist in a privileged position to reveal the nature of cognitive and creative behaviors.

View Article and Find Full Text PDF
Article Synopsis
  • Watersheds and estuaries face various human-related stressors that threaten their biodiversity and ecosystem health, creating a challenge for scientists and stakeholders in evaluating their ecological quality.
  • The study focuses on seven small French estuaries in agricultural watersheds, utilizing a multidisciplinary approach that includes landscape analysis, pollutant chemistry, and fish proteomics to understand the impact of land use on these environments.
  • Results showed significant environmental stress on juvenile European flounder due to factors like pesticides and hypoxia, revealing a complex response in fish proteins linked to detoxification, immunity, and metabolism in densely agricultural areas.
View Article and Find Full Text PDF

New selection methods, using trait-specific markers (marker-assisted selection (MAS)) and/or genome-wide markers (genomic selection (GS)), are becoming increasingly widespread in breeding programs. This new era requires innovative and cost-efficient solutions for genotyping. Reduction in sequencing cost has enhanced the use of high-throughput low-cost genotyping methods such as genotyping-by-sequencing (GBS) for genome-wide single-nucleotide polymorphism (SNP) profiling in large breeding populations.

View Article and Find Full Text PDF

The evolution of intracellular organelles by endosymbiosis is considered rare. Two recent studies suggest that endosymbioses between nitrogen-fixing bacteria and eukaryotic algae are approaching levels of integration comparable to cellular organelles, helping to solve the problem of oceanic nitrogen limitation.

View Article and Find Full Text PDF

The high diversity and global distribution of heterotrophic bacterial diazotrophs (HBDs) in the ocean has recently become apparent. However, understanding the role these largely uncultured microorganisms play in marine N fixation poses a challenge due to their undefined growth requirements and the complex regulation of the nitrogenase enzyme. We isolated and characterized Thalassolituus haligoni, a member of a widely distributed clade of HBD belonging to the Oceanospirillales.

View Article and Find Full Text PDF

UCYN-A (Cand. Atelocyanobacterium thalassa) has recently been recognized as a globally-distributed, early stage, nitrogen-fixing organelle (the 'nitroplast') of cyanobacterial origin present in select species of haptophyte algae (e.g.

View Article and Find Full Text PDF

Background: To identify determinants influencing Canadian parents' decision not to vaccinate their children aged 6 months to 17 years against seasonal influenza.

Methods: Data from the 2022 Childhood COVID-19 Immunization Coverage Survey, a national survey of approximately 10,500 Canadian parents/guardians and their children, was analyzed. The survey examined influenza vaccine coverage, parental perspectives on vaccines, reasons for hesitancy, and factors influencing immunization.

View Article and Find Full Text PDF

Background: COVID-19 vaccination efforts are critical in mitigating the impact of the virus, but despite proven safety and efficacy, vaccination rates among children in Canada are lower than in adults, prompting a need to explore determinants of childhood COVID-19 non-vaccination to improve uptake.

Method: This study analyzed data from the Canadian COVID-19 Immunization Coverage Survey 2022. Using multivariable logistic regression, it examined the association between COVID-19 non-vaccination among children aged 5-17 and factors such as parental sociodemographic characteristics, vaccine knowledge, attitudes, and beliefs (KAB), and vaccination history.

View Article and Find Full Text PDF

Acting in concert with others, a key aspect of our social life, requires behavioral coordination between persons on multiple timescales. When zooming in on the kinematic properties of movements, it appears that small speed fluctuations, called submovements, are embedded within otherwise smooth end-point trajectories. Submovements, by occurring at a faster timescale than that of movements, offer a novel window upon the functional relationship between distinct motor timescales.

View Article and Find Full Text PDF

On September 26th 2019, a major fire occurred in the Lubrizol factory located near the Seine estuary, in Rouen-France. Juvenile flounders were captured in the Canche estuary (a reference system) and caged one month in the Canche and in the Seine downstream the accident site. No significant increases of PAHs, PCBs and PFAS was detected in Seine vs Canche sediments after the accident, but a significant increase of dioxins and furans was observed in water and sewage sludge in the Rouen wastewater treatment plant.

View Article and Find Full Text PDF

In species with large and complex genomes such as conifers, dense linkage maps are a useful resource for supporting genome assembly and laying the genomic groundwork at the structural, populational, and functional levels. However, most of the 600+ extant conifer species still lack extensive genotyping resources, which hampers the development of high-density linkage maps. In this study, we developed a linkage map relying on 21,570 single nucleotide polymorphism (SNP) markers in Sitka spruce (Picea sitchensis [Bong.

View Article and Find Full Text PDF

Objective: This study aims to calculate the global warming potential, in carbon dioxide (CO2) equivalent emissions, from all in-scope activities involved in a phase-1 clinical study.

Design: Retrospective analysis.

Data Source: Internal data held by Janssen Pharmaceuticals.

View Article and Find Full Text PDF

Trimming of sequencing reads is a pre-processing step that aims to discard sequence segments such as primers, adapters and low quality nucleotides that will interfere with clustering and classification steps. We evaluated the impact of trimming length of paired-end 16S and 18S rRNA amplicon reads on the ability to reconstruct the taxonomic composition and relative abundances of communities with a known composition in both even and uneven proportions. We found that maximizing read retention maximizes recall but reduces precision by increasing false positives.

View Article and Find Full Text PDF

Background: The circular economy reshapes the linear "take, make, and dispose" approach and evolves around minimizing waste and recapturing resources in a closed-loop system. The health sector accounts for 4.6% of global greenhouse gas emissions and has, over the decades, been built to rely on single-use devices and deal with high volumes of medical waste.

View Article and Find Full Text PDF

Movements are naturally composed of submovements, i.e. recurrent speed pulses (2-3 Hz), possibly reflecting intermittent feedback-based motor adjustments.

View Article and Find Full Text PDF

We describe diazotrophs present during a 2015 GEOTRACES expedition through the Canadian Arctic Gateway (CAG) using nifH metabarcoding. In the less studied Labrador Sea, Bradyrhizobium sp. and Vitreoscilla sp.

View Article and Find Full Text PDF

UCYN-A is a globally important nitrogen-fixing symbiotic microbe often found in colder regions and coastal areas where nitrogen fixation has been overlooked. We present a 3-year coastal Northwest Atlantic time series of UCYN-A by integrating oceanographic data with weekly and16 rRNA gene sequencing and quantitative PCR assays for UCYN-A ecotypes. High UCYN-A relative abundances dominated by A1 to A4 ecotypes reoccurred annually in the coastal Northwest Atlantic.

View Article and Find Full Text PDF

Background: Digital health technologies (DHTs) can facilitate the execution of de-centralized trials that can offer opportunities to reduce the burden on participants, collect outcome data in a real-world setting, and potentially make trial populations more diverse and inclusive. However, DHTs can also be a significant source of electronic waste (e-waste). In recognition of the potential health and environmental impact from DHT use in trials, private and public institutions have recently launched initiatives to help measure and manage this e-waste.

View Article and Find Full Text PDF

Introduction: Monoclonal antibodies targeting interleukin 5 (IL5) or its receptor (IL5R) are frequently used in severe asthma, in which they reduce exacerbations rate and oral corticosteroids (OCS) exposure. Anti-IL5/IL5Rs have been studied in patients with chronic obstructive pulmonary disease (COPD) without convincing benefits. However, these therapies have been used in clinical practice in COPD with apparently good results.

View Article and Find Full Text PDF

The OPTIMEV (OPTimisation de l'Interrogatoire dans l'évaluation du risque throMbo-Embolique Veineux) study has provided some important and innovative information for the management of lower extremity isolated distal deep vein thrombosis (distal DVT). Indeed, if distal deep-vein thrombosis (DVT) therapeutic management is nowadays still debated, before the OPTIMEV study, the clinical relevance of these DVT itself was questioned. Via the publication of 6 articles, between 2009 and 2022, assessing risk factors, therapeutic management, and outcomes of 933 patients with distal DVT we were able to demonstrate that: - When distal deep veins are systematically screened for suspicion of DVT, distal DVT are the most frequent clinical presentation of the venous thromboembolic disease (VTE).

View Article and Find Full Text PDF
Article Synopsis
  • This study developed a multidisciplinary framework to evaluate the ecological health of six French estuaries by collecting various data types, including geography, hydrobiology, pollution chemistry, and fish biology.
  • European flounder were collected to analyze their responses to environmental stressors through classical biomarkers and modern molecular techniques like transcriptomics and proteomics, revealing significant changes in protein levels related to detoxification and stress.
  • The findings highlighted specific human impacts on each estuary, such as industrial activity and agricultural runoff, which led to issues like hypoxia and potential endocrine disruption in fish populations.
View Article and Find Full Text PDF