2,053 results match your criteria: "Univ. Brest[Affiliation]"

Telomere length (TL) is increasingly recognized as a molecular marker that reflects how reproductive aging affects intergenerational transmissions. Here, we investigated the effects of parental age on offspring survival and the regulation of TL by examining the telomere-elongating activity of telomerase in the Pacific oyster. We assessed the classical hallmarks of aging in parents at three age classes (young, middle-aged, and old) and crossbred them using a split-brood design to examine the consequences of the nine maternal-by-paternal age combinations on their offspring.

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The impact of a cyclonic (C), an anticyclonic (AC) eddy and transition zone (TZ), which is the area between the two eddies, on acoustic groups representing various mesopelagic organisms, was investigated using a semi-supervised multifrequency classification approach (hereafter, Escore algorithm). The Escore algorithm involved selecting regions of interest (ROIs) within multifrequency (18, 38, 70, and 120 kHz) echograms and classifying into four clusters or echo-classes using Sv differences (Sv18-38, Sv70-38, and Sv120-38). Acoustic densities and diel vertical migration strength varied between the AC, C, and TZ according to the frequency.

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Article Synopsis
  • * Data from over 6,000 patients revealed varying rates of LLT reimbursement and treatment discontinuation after four years, indicating different sequenced surgical impacts.
  • * Findings showed that CMBS significantly decreases the costs and necessity for LLT in dyslipidemia patients over a four-year follow-up period.
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The queen scallop Aequipecten opercularis: A slow domoic acid depurator?

Harmful Algae

September 2024

Laboratoire des Sciences de l'Environnement Marin, UMR 6539 LEMAR (UBO/CNRS/IRD/Ifremer). Institut Universitaire Européen de la Mer, Rue Dumont d'Urville, Technopộle Brest-Iroise, Plouzané 29280, France. Electronic address:

Article Synopsis
  • - Domoic acid (DA), a harmful toxin from Pseudo-nitzschia diatoms, causes Amnesic Shellfish Poisoning (ASP) and has led to significant harvest bans in the English Channel, affecting economically important scallop species like Pecten maximus.
  • - The study investigated the depuration rate of DA in queen scallops (Aequipecten opercularis) after exposure to a toxic bloom, finding that these scallops can remain contaminated for up to 70 days even at low toxin levels.
  • - Results indicated that A. opercularis's method of toxin retention involves late-autophagy processes, suggesting they are not effective DA depurators, which is important for making informed
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Duration of anticoagulation of venous thromboembolism.

Presse Med

September 2024

Respiratory Department, Ramón y Cajal Hospital (IRICYS), Madrid, Spain; Medicine Department, Universidad de Alcalá (IRICYS), Madrid, Spain; CIBER de Enfermedades Respiratorias (CIBERES), Madrid, Spain.

Venous thromboembolism (VTE) is a common, serious condition that requires anticoagulation for at least three months to prevent recurrence and long-term complications. After this initial period, the decision to continue or stop anticoagulation depends on the balance between the risk of recurrent VTE and the risk of bleeding. Established guidelines suggest short-term anticoagulation for VTE caused by transient factors and indefinite anticoagulation for recurrent or cancer-associated VTE.

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Hypercoagulable states, also called thrombophilia, can either be congenital or acquired. Congenital thrombophilia, associated mainly with venous thrombosis, is either secondary to coagulation-inhibitor deficiencies, i.e.

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A tribute to Guy Meyer.

Presse Med

September 2024

FCRIN INNOVTE network, Saint-Etienne, France; Département de Pneumologie, Institut Mutualiste Montsouris, Paris, France.

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Accelerating rate of human impact and environmental change severely affects marine biodiversity and increases the urgency to implement the Convention on Biological Diversity (CBD) 30×30 plan for conserving 30% of sea areas by 2030. However, area-based conservation targets are complex to identify in a 3-dimensional (3D) ocean where deep-sea features such as seamounts have been seldom studied mostly due to challenging methodologies to implement at great depths. Yet, the use of emerging technologies, such as environmental DNA combined with modern modeling frameworks, could help address the problem.

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Article Synopsis
  • * Conducted across 40 hospitals in France, the trial involved 2,222 patients who were randomly assigned to either keep using RASIs until surgery or stop them 48 hours prior.
  • * The results showed no significant difference in all-cause mortality or major complications within 28 days after surgery between the two groups, suggesting that either strategy can be safely applied.
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Background: This study assesses the effectiveness of 5 main conversional or revisional metabolic bariatric surgery sequences after sleeve gastrectomy, adjustable gastric banding and gastric bypass on reimbursement and cost of continuous positive airway pressure therapy, the first line treatment for obstructive sleep apnea, in France.

Methods: This nationwide observational population-based cohort study analyzed data from the French National Health Insurance database. It included all patients who had undergone primary metabolic bariatric surgery in France between January 1, 2012, and December 31, 2014, and followed until December 31, 2020.

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Article Synopsis
  • * A study analyzed 381 isolates using a genetic typing method, revealing low genetic diversity and high clonal reproduction among populations, indicating potential movement between walnut trees and a latent pathogenic lifestyle.
  • * Genetic comparisons showed different patterns between French populations and those from California and Spain, hinting at limited pathogen transmission from overseas but possible links to French vineyards, offering insights into the spread and factors contributing to walnut dieback in France.
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The last few years have seen a surge of interest from field ecologists and evolutionary biologists to study neoplasia and cancer in wildlife. This contributes to the One Health Approach, which investigates health issues at the intersection of people, wild and domestic animals, together with their changing environments. Nonetheless, the emerging field of wildlife cancer is currently constrained by methodological limitations in detecting cancer using non-invasive sampling.

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Mycotoxin contamination of food and feed is a major global concern. Chronic or acute dietary exposure to contaminated food and feed can negatively affect both human and animal health. Contamination occurs through plant infection by toxigenic fungi, primarily and spp.

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Article Synopsis
  • People are getting more exposed to harmful chemicals called PAH, especially because of climate change and wildfires.
  • Some fish have adapted to live in waters with high PAH pollution, showing changes in their genes that help protect them from cancer.
  • When those fish are raised in clean water, they can recover some of their protective gene responses, indicating that their adaptations come from environmental influences, not just their DNA.
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Macrocyclic chelators play a central role in medical imaging and nuclear medicine owing to their unparalleled metal cation coordination abilities. Their functionalization by fluorinated groups is an attractive design, to combine their properties with those of F for Positron Emission Tomography (PET) or natural F for Magnetic Resonance Imaging (MRI), and access potential theranostic or smart medical imaging probes. For the first time, a compact fluorinated macrocyclic architecture has been synthesized, based on a cyclen chelator bearing additional pyridine coordinating units and simple methyltrifluoroborate prosthetic groups.

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Straightforward, accurate diagnostic management in patients presenting with clinically suspected pulmonary embolism (PE) is essential, since starting anticoagulant treatment may give important adverse effects of bleeding, while false exclusion of the disease may lead to recurrent VTE, with associated morbidity and mortality. In the past three decades, considerable improvement in the diagnostic management of PE has been made. Computed tomography pulmonary angiography (CTPA) has largely replaced conventional pulmonary angiography and ventilation-perfusion lung scanning as the imaging methods of choice.

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Extracellular vesicles (EVs) are future promising therapeutics, but their instability in vivo after administration remains an important barrier to their further development. Many groups evaluated EV surface modification strategies to add a targeting group with the aim of controlling EV biodistribution. Conversely, fewer groups focused on their stabilization to obtain "stealth" allogenic EVs.

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Background: The main aim of this study was to build an item bank for assessing the care quality of multi-professional healthcare centers (MPHCC) from the perspective of patients with multimorbidity. This study was part of the QUALSOPRIM (QUALité des SOins PRIMaires; primary healthcare quality) research project to create a psychometrically robust self-administered questionnaire to assess healthcare quality.

Methods: First, twelve experts built an item bank using data from a previous qualitative work and a systematic literature review.

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Article Synopsis
  • The composition of volatile elements varies widely among planetary bodies like Earth, Mars, and the Moon, sparking debates about the processes behind these variations.
  • Howardites-eucrites-diogenites (HED) meteorites, likely from asteroid 4-Vesta, provide valuable information about the depletion of volatiles in the Solar System.
  • The study reveals that the zinc isotopic composition in diogenites indicates minimal outer solar system influence on 4-Vesta's volatiles, suggesting a history of global evaporation followed by partial recondensation, impacting the volatile content of planetary bodies.
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SEC16A Variants Predispose to Chronic Pancreatitis by Impairing ER-to-Golgi Transport and Inducing ER Stress.

Adv Sci (Weinh)

October 2024

Department of Gastroenterology, Shanghai Institute of Pancreatic Diseases, Shanghai Key Laboratory of Nautical Medicine and Translation of Drugs and Medical Devices, Changhai Hospital, National Key Laboratory of Immunity and Inflammation, Naval Medical University, Shanghai, 200433, China.

Chronic pancreatitis (CP) is a complex disease with genetic and environmental factors at play. Through trio exome sequencing, a de novo SEC16A frameshift variant in a Chinese teenage CP patient is identified. Subsequent targeted next-generation sequencing of the SEC16A gene in 1,061 Chinese CP patients and 1,196 controls reveals a higher allele frequency of rare nonsynonymous SEC16A variants in patients (4.

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Article Synopsis
  • The study investigates the demographic history of France using genotype datasets from individuals in Northern France, revealing significant population structure and differentiation in regions like Brittany and the Loire basin.
  • The research highlights a connection between the ancestry of local populations and genetic variations, particularly indicating a distinction in shared ancestry related to Neolithic and steppe populations.
  • Findings suggest the necessity of studying local demographics to better comprehend the distribution of genetic variants and their role in the prevalence of diseases among populations in Brittany and neighboring areas.
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Microsatellite instability at U2AF-binding polypyrimidic tract sites perturbs alternative splicing during colorectal cancer initiation.

Genome Biol

August 2024

Sorbonne Université, INSERM, Unité Mixte de Recherche Scientifique 938 and SIRIC CURAMUS, Centre de Recherche Saint-Antoine, Equipe Instabilité Des Microsatellites Et Cancer, Equipe Labellisée Par La Ligue Nationale Contre Le Cancer, 75012, Paris, France.

Article Synopsis
  • Microsatellite instability (MSI), often linked to mismatch repair deficiency in colorectal cancer (CRC), leads to numerous noncoding DNA mutations, particularly affecting RNA splicing sites.
  • This research shows that these noncoding mutations happen early in tumor development, even before the cancer cells become mutated in their coding regions, and are associated with altered splicing patterns in mRNA.
  • The altered RNA splicing impacts cellular differentiation and promotes the initiation of MSI CRC, indicating that these noncoding changes are significant for cancer progression before traditional coding mutations occur.
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