3,659 results match your criteria: "University of Paris Est-Creteil; and.[Affiliation]"

Deep learning enabled label-free microfluidic droplet classification for single cell functional assays.

Front Bioeng Biotechnol

September 2024

Institut Pasteur, Université Paris Cité, Institut National de la Santé et de la Recherche Médicale (INSERM), Unité Mixte de Recherche (UMR) 1222, Antibodies in Therapy and Pathology, Paris, France.

Droplet-based microfluidics techniques coupled to microscopy allow for the characterization of cells at the single-cell scale. However, such techniques generate substantial amounts of data and microscopy images that must be analyzed. Droplets on these images usually need to be classified depending on the number of cells they contain.

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Quantification Approaches in Non-Target LC/ESI/HRMS Analysis: An Interlaboratory Comparison.

Anal Chem

October 2024

Department of Materials and Environmental Chemistry, Stockholm University, Svante Arrhenius väg 16, 11418 Stockholm, Sweden.

Nontargeted screening (NTS) utilizing liquid chromatography electrospray ionization high-resolution mass spectrometry (LC/ESI/HRMS) is increasingly used to identify environmental contaminants. Major differences in the ionization efficiency of compounds in ESI/HRMS result in widely varying responses and complicate quantitative analysis. Despite an increasing number of methods for quantification without authentic standards in NTS, the approaches are evaluated on limited and diverse data sets with varying chemical coverage collected on different instruments, complicating an unbiased comparison.

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Introduction: A clear immune correlate of protection from severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection has not been defined. We explored antibody, B-cell, and T-cell responses to the third-dose vaccine and relationship to incident SARS-CoV-2 infection.

Methods: Adults in a prospective cohort provided blood samples at day 0, day 14, and 10 months after the third-dose SARS-CoV-2 vaccine.

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Article Synopsis
  • - G6PD deficiency is a genetic condition that affects red blood cells, making them more vulnerable to oxidative stress, potentially leading to hemolytic anemia, especially after certain drug exposures or infections.
  • - A study evaluated flow cytometry as an alternative diagnostic tool for G6PD deficiency in 514 samples, finding it to be more effective than traditional spectrophotometry, particularly in identifying cases in heterozygous females.
  • - While flow cytometry demonstrated high sensitivity and specificity, it also had some limitations, such as false negatives in patients with sickle cell disease, indicating the need for careful interpretation of results in those with other blood disorders.
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Background: Cerebrovascular accident (CVA) is a major global contributor to death and disability. As part of its medical management, researchers have recognized the importance of promising neuroprotective strategies, where stem cell transplantation (SCT) is thought to confer advantages trophic and neuroprotective effects.

Aim: To evaluate the current state of research on SCT in patients with CVA, assess key trends and highlight literature gaps.

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Objective: This study aimed: (i) to investigate the impact of fatigue, triggered by maximal isometric contraction exercises, on the active and passive stiffness of plantar flexors (PF), and (ii) to examine the relationship between changes in mechanical parameters and neuromuscular alterations after fatigue.

Methods: A healthy cohort (n = 12; age = 27.3 ± 5.

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Hypothesis: Acoustic levitation is a suitable approach for studying processes occurring at the gas-liquid interfaces, as it allows its investigation in a contact-free manner while providing control over the gas phase. Here, we hypothesize that phase transitions induced by a CO rich atmosphere can be examined, at different length scales, in a contact-free manner.

Experimental: A system consisting of 12-hydroxysteric acid (HSA) soaps mixed with different ratios of monoethanolamine (MEA) and choline hydroxide, was prepared.

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Background: To describe French general practioners' (GPs) adaptation strategies to ensure follow-up care of nursing home patients during the first wave of COVID-19 (May 2020) and to identify factors associated with each strategy.

Methods: A national cross-sectional study was conducted with online questionnaires in May 2020 among GPs practicing in France (metropolitan and overseas) and usually providing nursing home visits before pandemic. The outcome was defined as the GPs' adaptation strategies for managing nursing home patients and was categorized into four groups: Maintenance of Nursing Home Visits NHV (reference), Stopping NHV, Numeric adaptation (teleconsultations only), Mixed adaptation (NHV and teleconsultations).

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Background: Hypertension is a major risk factor for ischemic stroke. An important strategy in controlling hypertension is dietary modification. The present study evaluates the effect of Dietary Approaches to Stop Hypertension (DASH) diet on the risk of ischemic stroke.

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Global trade depends on long-haul transportation, yet comfort for drivers on lengthy trips is sometimes neglected. Rough roads have a major negative influence on driver comfort and increase the risk of weariness, distracted driving, and accidents. Using Random Forest regression, a machine learning technique well-suited to examining big datasets and nonlinear relationships, this study examines the relationship between road roughness and driver comfort.

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Background: While parent-delivered pain management has been demonstrated to effectively reduce neonatal procedural pain responses, little is known about to what extent it is utilized. Our aim was to explore the utilization of parents in neonatal pain management and investigate whether local guidelines promote parent-delivered interventions.

Methods: A web-based survey was distributed to neonatal units worldwide.

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Monitoring macroplastics in aquatic and terrestrial ecosystems: Expert survey reveals visual and drone-based census as most effective techniques.

Sci Total Environ

December 2024

Department of Sciences, University Roma Tre, Viale Guglielmo Marconi 446, 00146 Rome, Italy; National Biodiversity Future Center (NBFC), Università di Palermo, Piazza Marina 61, 90133 Palermo, Italy. Electronic address:

Article Synopsis
  • Anthropogenic litter, specifically plastic, significantly impacts ecosystems, and scientists from various fields are working together to assess and reduce these pollutants.
  • The research aimed to determine the best methods for monitoring macroplastic litter in rivers and oceans by surveying 46 researchers who evaluated different techniques such as visual census, drone surveys, satellite imagery, and GPS/GNSS trackers.
  • Results indicated that traditional visual census and drone use were the most favored methods (scoring 3.5 and 2.0), while satellite imagery and GPS trackers were less effective due to validation challenges and range limitations, with scores below 1.2.
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Use of Botulinum Toxin in Upper-Limb Tremor: Systematic Review and Perspectives.

Toxins (Basel)

September 2024

Assistance Publique Hôpitaux de Paris, Service de Rééducation Neurolocomotrice, Hôpitaux Universitaires Henri Mondor, F-94010 Créteil, France.

Article Synopsis
  • Tremor is the most common movement disorder, and while oral medications often have limited effectiveness due to side effects, botulinum toxin (BT) shows promise for improving upper limb function, although strong evidence is still lacking.
  • A systematic review analyzed existing studies on BT for upper-limb tremor, finding only eight randomized controlled trials and seven open-label studies with small sample sizes, indicating that tailored injections based on individual needs lead to better outcomes.
  • While BT injections can improve functionality, they may cause temporary weakness, particularly in wrist and finger movements; the review suggests optimizing injection techniques to minimize weakness and enhance effectiveness in treating tremors.
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T-lymphoblastic lymphoma (T-LBL) and thymoma are two rare primary tumors of the thymus deriving either from T-cell precursors or from thymic epithelial cells, respectively. Some thymoma subtypes (AB, B1, and B2) display numerous reactive terminal deoxynucleotidyl transferase-positive (TdT) T-cell precursors masking epithelial tumor cells. Therefore, the differential diagnosis between T-LBL and TdT T-lymphocyte-rich thymoma could be challenging, especially in the case of needle biopsy.

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Article Synopsis
  • - The study investigates why recruitment rates in inflammatory bowel disease (IBD) trials are declining, focusing on screen failure (SF) proportions and their causes across phase 2 and 3 trials for ulcerative colitis (UC) and Crohn's disease (CD).
  • - An analysis of 17 clinical trials revealed that 43% of UC patients and 53% of CD patients experienced SF, with key reasons being inability to meet specific clinical and endoscopic criteria, along with infections like Clostridium difficile.
  • - The findings highlight that high SF rates, especially in CD trials, hinder patient recruitment, largely due to rigid and often unclear eligibility criteria.
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Current clinical interventions for stroke majorly involve thrombolysis or thrombectomy, however, cessation of the progressive deleterious cellular cascades post-stroke and long-term neuroprotection are yet to be explored. Mitochondria are highly vulnerable organelles and their dysfunction is one of the detrimental consequences following stroke. Mitochondria dysregulation activate unfavourable cellular events over a period of time that leads to the collapse of neuronal machinery in the brain.

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Explant-based models for assessing HCC recurrence after liver transplantation serve as the gold standard, guiding post-liver transplantation screening and immunosuppression adjustment. Incorporating alpha-fetoprotein (AFP) levels into these models, such as the novel R3-AFP score, has notably enhanced risk stratification. However, validation of these models in high-evidence data is mandatory.

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Health literacy and the use of digital tools in older patients with cancer and their younger counterparts: A multicenter, nationwide study.

Patient Educ Couns

January 2025

Univ. Bordeaux, Inserm, Bordeaux Population Health Research Center, Epicene team, UMR, 1219, Bordeaux, France; Inserm CIC1401, Clinical and Epidemiological Research Unit, Institut Bergonie, Comprehensive Cancer Center, Bordeaux, France.

Article Synopsis
  • The study looked at health literacy (HL) in cancer patients aged 65 and older compared to those aged 18-64 in France.
  • It found that older patients used digital tools less often and had lower HL scores than younger patients.
  • The results suggest that it's really important for doctors to pay attention to health literacy so they can help patients understand their health better, especially those who may struggle with it.
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Purpose: Stress shielding in short-stem arthroplasty can cause critical metaphyseal bone loss. If the size and shape of the humeral shaft are important factors, it is unknown whether the shape of the polyethylene component in reverse shoulder arthroplasty (RSA) affects bone stress around or within the stem. We explored the impact of polyethylene shape on humeral and scapular stress distribution using a finite element model.

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Refractory multiprincipal element alloys (RMPEAs) are potential successors to incumbent high-temperature structural alloys, although efforts to improve oxidation resistance with large additions of passivating elements have led to embrittlement. RMPEAs containing group IV and V elements have a balance of properties including moderate ductility, low density, and the necessary formability. We find that oxidation of group IV-V RMPEAs induces hierarchical heterogeneities, ranging from nanoscale interstitial complexes to tertiary phases.

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Background: Among 547 patients receiving maribavir or valganciclovir for first-episode cytomegalovirus infection after hematopoietic cell transplant, the treatment response rate was 69.6% and 77.4% respectively.

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Disrupted basolateral amygdala circuits supports negative valence bias in depressive states.

Transl Psychiatry

September 2024

Institut Pasteur, Université Paris Cité, Centre National de la Recherche Scientifique, Unité Mixte de Recherche 3571, Perception and Action Unit, F-75015, Paris, France.

Article Synopsis
  • * A study using a mouse model of depression revealed that chronic stress alters brain circuits in the basolateral amygdala, affecting how positive and negative stimuli are processed.
  • * Key findings suggest that negatively biased stimulus processing can be improved by stimulating certain neural pathways, highlighting potential targets for depression treatment.
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Serum triglyceride concentrations increase in dogs with obesity, which is typically assessed by body condition score (BCS), however little is known about changes that take place in non-obese dogs in overweight condition. Further, the associations of triglyceride levels with other markers of energy homeostasis are poorly characterised in healthy animals. The present study aimed to evaluate associations between both BCS and triglyceride concentrations with other markers of lipid and glucose metabolism in healthy, non-obese dogs, as well as to assess whether these markers change significantly in non-obese dogs with overweight as compared to their lean counterparts.

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