11,711 results match your criteria: "Aix-Marseille Univ. & CNRS[Affiliation]"

Background: There is emerging recognition of the risks of harmful chemical pesticides, fertilizers and 'nutrients' by cannabis growers. One group of chemicals, Plant Growth Regulators (PGRs), many of which have been banned from food crops for decades, have been found unlisted in a number of fertilizers and supplements marketed at cannabis growers.

Methods: This paper predominately uses data from a 2020-21 convenience web survey of mainly small-scale, recent (last 5yrs) cannabis growers from 18 countries (n = 11,479).

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Exploring the effect of displacement rate on the mechanical properties of denticulate ligaments through uniaxial tensile testing.

J Mech Behav Biomed Mater

February 2025

Ecole de Technologie Supérieur de Montréal, Montréal, Canada; iLabSpine, Canada. Electronic address:

Denticulate ligaments play a key role in stabilizing the spinal cord (SC). Accurate representation of these structures in finite element modelling, whether in quasi-static or dynamic conditions, is essential for providing biofidelic responses. Therefore, understanding, characterizing and comparing the tensile mechanical properties of denticulate ligaments at different loading velocities is crucial.

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Patients' psychosocial attributes and aggressiveness of cancer treatments near the end of life.

Oncologist

November 2024

Department of Supportive and Palliative Care, Institut Paoli-Camettes, Aix-Marseille Univ, CNRS, INSERM, Marseille, France.

Background: While the use of chemotherapy near the end of life (EOL) has been identified as a relevant criterion for assessing quality of cancer care and has been estimated as non-beneficial, a trend of aggressiveness in cancer care during the last period of life remains. Both patients' sociodemographic characteristics and physicians' practice setting are associated with this use. The role of patients' psychosocial characteristics has however been understudied.

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Tailoring glioblastoma treatment based on longitudinal analysis of post-surgical tumor microenvironment.

J Exp Clin Cancer Res

November 2024

Aix-Marseille Univ, CNRS, INP, Institute of Neurophysiopathology UMR7051, Team Gliomagenesis and Microenvironment, Faculté des Sciences Médicales et Paramédicales - Secteur Timone, 27, Bd Jean Moulin, Marseille, 13005, France.

Glioblastoma (GBM), an incurable primary brain tumor, typically requires surgical intervention followed by chemoradiation; however, recurrences remain fatal. Our previous work demonstrated that a nanomedicine hydrogel (GemC-LNC) delays recurrence when administered post-surgery. However, tumor debulking also triggers time-dependent immune reactions that promote recurrence at the resection cavity borders.

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Article Synopsis
  • The study aimed to gather insights from international experts on the efficacy and challenges of two minimally invasive surgical techniques, transoral laser microsurgery (TLM) and transoral robotic surgery (TORS), for treating supraglottic laryngeal tumors.
  • A survey was conducted with 27 head and neck surgeons, finding that TLM generally took less setup time compared to TORS, although both techniques faced concerns about bleeding during surgery, particularly with TLM.
  • Experts viewed TLM and TORS as largely equal in effectiveness, but noted that TORS offered better control over bleeding and improved visibility during the procedure.
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Article Synopsis
  • Extreme climatic events (ECEs) like marine heatwaves pose serious threats to biodiversity, highlighting the need for understanding ecological responses to these recurring events.
  • Researchers used a "multiple events" approach to study the effects of recurrent ECEs on the temperate coral Paramuricea clavata, assessing factors like environmental, genetic, and phenotypic influences over three years.
  • Findings indicated that environmental impacts were the primary drivers of coral responses, with limited evidence of genetic adaptability, suggesting that P. clavata populations face significant challenges due to ongoing heat stress and may struggle to recover.
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Background: Platelet transfusion is considered the standard treatment for preventing or controlling severe haemorrhage in Glanzmann thrombasthenia (GT). However, platelet transfusion can have detrimental effects, including the production of anti-GPIIb/IIIa isoantibodies or anti-HLA antibodies (Ab) and platelet transfusion refractoriness. Recombinant activated factor VII (rFVIIa) has been proposed as an alternative treatment to platelet transfusion.

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Muscle development and diversity require a large number of spatially and temporally regulated events controlled by transcription factors (TFs). has long stood as a model to study myogenesis due to the highly conserved key TFs involved at all stages of muscle development. While many studies focused on the diversification of larval musculature, how distinct adult muscle types are generated is much less characterized.

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Enhancing Antileishmanial Activity of Amidoxime-Based Compounds Bearing a 4,5-Dihydrofuran Scaffold: In Vitro Screening Against .

Molecules

November 2024

Aix Marseille Univ, CNRS, ICR UMR 7273, Equipe Pharmaco-Chimie Radicalaire, Faculté de Pharmacie, 27 Boulevard Jean Moulin, CS30064, CEDEX 05, 13385 Marseille, France.

Article Synopsis
  • - Leishmaniasis, caused by a protozoan, has treatment gaps, leading to the development of new amidoxime derivatives aimed at improving antileishmanial activity.
  • - Twelve new compounds were created by modifying a previous hit, using a three-step synthesis process that included cyclization, amidation, and reaction with hydroxylamine.
  • - Three specific derivatives showed promising in vitro toxicity-activity results, with high selectivity indices (SI) against the parasite, indicating they could potentially be more effective and less toxic than existing treatments like Pentamidine.
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Dihydroartemisinin-Piperaquine Combination in the Treatment of Uncomplicated Malaria: Update on Clinical Failures in Africa and Tools for Surveillance.

J Clin Med

November 2024

Unité Parasitologie et Entomologie, Département Microbiologie et Maladies Infectieuses, Institut de Recherche Biomédicale des Armées, 13005 Marseille, France.

Dihydroartemisinin (or artenimol)-piperaquine is one of the six artemisinin-based combination therapies recommended in uncomplicated malaria treatment. However, artemisinin partial resistance has been reported in Cambodia, Laos, Vietnam, India, and, recently, in Africa. Polymorphisms in the gene have been described as molecular markers of artemisinin resistance and the amplification of the plasmepsine II/III (/) gene has been associated with piperaquine resistance.

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Alpha oscillations in the auditory cortex have been associated with attention and the suppression of irrelevant information. However, their anatomical organization and interaction with other neural processes remain unclear. Do alpha oscillations function as a local mechanism within most neural sources to regulate their internal excitation/inhibition balance, or do they belong to separated inhibitory sources gating information across the auditory network? To address this question, we acquired intracerebral electrophysiological recordings from epilepsy patients during rest and tones listening.

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Impact Statement: This study addresses the pressing issue of subjective cognitive decline in aging populations by investigating neurofeedback (NFB) as a potential early therapeutic intervention. By evaluating the efficacy of individualised NFB training compared to standard protocols, tailored to each participant's EEG profile, it provides novel insights into personalised treatment approaches. The incorporation of innovative elements and rigorous analytical techniques contributes to advancing our understanding of NFB's modulatory effects on EEG frequencies and cognitive function in aging individuals.

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Advancements in microplastic research are progressing rapidly, yet detecting and identifying nanoplastics remain challenging, especially in natural samples. In this study, we addressed these challenges by employing fluorescent labeling on nanoparticles of six prevalent plastic types (PP, LDPE, HDPE, PS, PET, and PVC) to enable their specific detection the analysis of 3D fluorescence spectra post-staining. Four fluorescent molecules were tested: cyanine-3 phosphoramidite, rhodamine-6G, fluorescein sodium salt, and Vat Red 15.

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Introduction: Distal anterior urethral strictures (DAUS) affect the meatus, navicular fossa (NF) and penile urethra (PU). The main causes are inflammatory (lichen sclerosous [LS]), traumatic iatrogenic, or idiopathic. Post-hypospadias stenosis is common and constitutes a separate entity, dealt with in a separate article.

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Chlorine 36 dry deposition on lettuce and maize crops.

J Environ Radioact

January 2025

Univ. Aix-Marseille, CNRS, IRD, INRAE, Coll. France, UM 34 CEREGE, Aix-en-Provence, 13545, France. Electronic address:

Chlorine is a mineral nutrient which, in a certain amount in the form of chloride, is essential for plant development. However, the atmosphere-plant transfer of its radioactive isotope, chlorine-36, is still poorly understood. In this study, dry deposition of Cl on lettuce and maize was determined experimentally.

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Gastruloids are competent to specify both cardiac and skeletal muscle lineages.

Nat Commun

November 2024

Aix-Marseille Univ, INSERM, Marseille Medical Genetics (MMG), Marseille, France.

Cardiopharyngeal mesoderm contributes to the formation of the heart and head muscles. However, the mechanisms governing cardiopharyngeal mesoderm specification remain unclear. Here, we reproduce cardiopharyngeal mesoderm specification towards cardiac and skeletal muscle lineages with gastruloids from mouse embryonic stem cells.

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An in-situ experiment was conducted in a young mangrove with no history of oil contamination (French Guiana). Control and oil-contaminated sediments were sampled one month after exposure and analyzed to a depth of 18 cm to assess natural oil depletion and changes in benthic communities. High biodegradation percentages (89-99 %) of n-alkanes and polycyclic aromatic hydrocarbons were measured.

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Impact of the COVID-19 pandemic on cannabis cultivation and use in 18 countries.

Int J Drug Policy

November 2024

Social Equity Research Centre and Digital Ethnography Research Centre, RMIT University, Melbourne, Vic, Australia; National Drug and Alcohol Research Centre, UNSW Sydney, NSW, Australia.

Article Synopsis
  • The COVID-19 pandemic affected cannabis cultivation behaviors, with a web survey of 11,479 growers across 18 countries revealing that most practices remained stable, though challenges were noted in purchasing cannabis.
  • While 28.2% of respondents reported increased cannabis use, and 21.4% reported growing more cannabis during the pandemic, those who faced job loss or casual employment were notably more likely to increase their cultivation.
  • The study concluded that the pandemic prompted some to start growing cannabis and highlighted that a lack of access to illegal supply chains motivated home cultivation increases, though it acknowledged limitations in sample representation.
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New insights into mechanisms underlying cognitive impairment in chronic kidney disease.

Kidney Int

December 2024

Centre de Néphrologie et Transplantation Rénale, Hôpital de la Conception, Assistance Publique - Hôpitaux de Marseille, Marseille, France; Aix Marseille Univ, INSERM 1263, INRAE 1260, Centre de Recherche en CardioVasculaire et Nutrition, Marseille, France.

Chronic kidney disease (CKD) is associated with an increased risk of cognitive impairment. Patients with CKD display an increased permeability of the blood-brain barrier. Zimmermann et al.

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Meningiomas are the most common primary intracranial tumors of adults. For meningiomas that progress or recur despite surgical resection and radiotherapy, additional treatment options are limited due to lack of proven efficacy. Meningiomas show recurring molecular aberrations, which may serve as predictive markers for systemic pharmacotherapies with targeted drugs or immunotherapy, radiotherapy or radioligand therapy.

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Article Synopsis
  • Biomarkers in psychiatry are essential for better diagnosis and management, and radionuclide imaging (PET and SPECT) shows potential for practical use, particularly in schizophrenia-spectrum disorders.
  • A systematic review evaluated 56 longitudinal studies involving 1,329 patients, focusing on the impact of PET and SPECT imaging on diagnosis and treatment personalization.
  • Key findings indicated that PET and SPECT can predict treatment responses and optimize dosages of antipsychotic medications, highlighting the need for more clinical trials to confirm these benefits.
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Background And Aims: Inflammatory Bowel Disease (IBD) are known to impact patients 'sexual lives. The aim of this study is to create and validate a sexual QoL designed for youth with IBD.

Methods: This study was conducted in two phases: development of the score and validation of the items.

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The present study sought to replicate two non-intuitive effects reported in the literature on lateral manual interception of uniformly moving targets, the angle-of-approach (AoA) effect and the reversal-movement (RM) effect. Both entail an influence of the target trajectory's incidence angle on the observed interceptive hand movements along the interception axis; they differ in the interception location considered. The AoA effect concerns all trajectory conditions requiring hand movement to allow successful interception, while the RM effect concerns the particular condition where the target will in fact arrive at the hand's initial position and no hand movement is therefore required but nevertheless regularly produced.

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Apical extracellular matrices (aECMs) act as crucial barriers, and communicate with the epidermis to trigger protective responses following injury or infection. In , the skin aECM, the cuticle, is produced by the epidermis and is decorated with periodic circumferential furrows. We previously showed that mutants lacking cuticle furrows exhibit persistent immune activation (PIA).

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