8,817 results match your criteria: "Christophe Mérieux Center[Affiliation]"

Background/objectives: Anterior Gradient-2 (AGR2/PDIA17) is a member of the protein disulfide isomerase (PDI) family of oxidoreductases. AGR2 is up-regulated in several solid tumors, including pancreatic ductal adenocarcinoma (PDAC). Given the dire need for new therapeutic options for PDAC patients, we investigated the expression and function of AGR2 in PDAC and developed a novel series of affinity-matured AGR2-specific single-chain variable fragments (scFvs) and monoclonal antibodies.

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Why implementing machine learning algorithms in the clinic is not a plug-and-play solution: a simulation study of a machine learning algorithm for acute leukaemia subtype diagnosis.

EBioMedicine

December 2024

Department of Haematology & Stem Cell Transplantation, West German Cancer Center, University Hospital Essen, Essen, Germany; Laboratory for Clinical Research and Real-World Evidence, Institute for Artificial Intelligence in Medicine, University Hospital Essen, Essen, Germany. Electronic address:

Article Synopsis
  • The study evaluated the performance of the AI-PAL machine learning algorithm for diagnosing acute leukaemia when implemented in a real-world clinical setting at the University Hospital Essen.
  • Results showed that the AI-PAL algorithm performed significantly worse in the clinical simulation compared to previous results, with key performance metrics falling below the expected levels.
  • The findings highlight the necessity for local validation and potential recalibration of machine learning models before their use in clinical settings to ensure they are reliable and safe for patient care.
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Purpose: To report cytokine/chemokine profiles of ocular fluid in two patients with herpetic uveitis.

Methods: Cytokine and chemokine profiling of ocular fluid was performed in two patients with herpetic uveitis. Ocular fluid findings were correlated with disease manifestations and the patients' clinical course.

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Dysregulation of mRNA expression by hsa-miR-186 overexpression in arsenic-induced skin carcinogenesis.

Toxicol Appl Pharmacol

December 2024

Department of Pharmacology and Toxicology, University of Louisville, 505 S. Hancock Street, Louisville, KY 40202, USA; Center for Integrative Environmental Health Sciences, University of Louisville, 505 S. Hancock Street, Louisville, KY 40202, USA. Electronic address:

Dysregulated miRNA expression contributes to development of arsenic-induced cutaneous squamous cell carcinoma (cSCC). hsa-miR-186 (miR-186) is overexpressed in arsenical cSCC tissues as well as in preclinical cell line model of arsenical cSCC. Simultaneous miR-186 overexpression and chronic inorganic trivalent arsenite (iAs; 100 nM) exposure transformed human HaCaT cell line preferentially over miR-186 overexpression or iAs exposure alone.

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Objective: To investigate the positioning of deep epigastric vessels in obese patients to determine the need to redefine laparoscopic port placement 'safe zones' based on body habitus.

Design: Retrospective case series.

Setting: University-affiliated 500-bed hospital.

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Simulation program staff and leadership often struggle to partner with front-line healthcare workers, their managers, and health system leaders. Simulation-based learning programs are too often seen as burdensome add-ons rather than essential mechanisms supporting clinical workforce readiness. Healthcare system leaders grappling with declining morale, economic pressure, and too few qualified staff often don't see how simulation can help them, and we simulation program leaders can't seem to bridge this gap.

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High-Throughput Protein-Bound Amino Acid Quantification from Maize Kernels.

Cold Spring Harb Protoc

December 2024

Christopher S. Bond Life Sciences Center, Division of Biological Sciences, Interdisciplinary Plant Group, University of Missouri, Columbia, Missouri 65211, USA

In cereal crops, seed quality is determined by the composition and levels of protein-bound amino acids, which account for ∼90% of the seed total amino acid content. In maize particularly, seed quality is affected by the low levels of lysine and tryptophan, two amino acids that humans and animals cannot synthesize and must obtain from the diet. The low levels of these two amino acids in seeds is due to the dominance of seed storage proteins, namely zeins, which are deficient in these two amino acids.

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High-Throughput Free Amino Acid Quantification from Maize Tissues.

Cold Spring Harb Protoc

December 2024

Christopher S. Bond Life Sciences Center, Division of Biological Sciences, Interdisciplinary Plant Group, University of Missouri, Columbia, Missouri 65211, USA

Amino acids in maize can exist in both a free and protein-bound state. While most amino acids are part of a protein backbone, a small percentage of them remain free and play important biological roles, serving as signaling molecules, nitrogen transporters, osmolytes, and precursors for multiple primary and secondary metabolites. Their levels vary widely especially in maize leaves, depending on the developmental stage and in response to environmental conditions.

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Amino Acid Quantification from Maize Tissues.

Cold Spring Harb Protoc

December 2024

Christopher S. Bond Life Sciences Center, Division of Biological Sciences, Interdisciplinary Plant Group, University of Missouri, Columbia, Missouri 65211, USA

Amino acid analysis is a vital part of analytical biochemistry. The increasing demand for low nitrogen fertilization and for plant-based diets with balanced amino acid levels and composition have made it crucial to develop reliable, fast, and affordable methods for analyzing amino acids in plants. As maize accounts for 43% of global cereal production, improving the amino acid composition of its kernels (i.

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Pulmonary lysyl oxidase expression and its role in seeding Lewis lung carcinoma cells.

Clin Exp Metastasis

December 2024

Christopher S. Bond Life Sciences Center 540F, University of Missouri, 1201 E Rollins, Columbia, MO, 65211, USA.

Copper promotes tumor growth and metastasis through a variety of mechanisms, most notably as a cofactor within the lysyl oxidase (LOX) family of secreted cuproenzymes. Members of this family, which include LOX and LOX-like enzymes LOXL1-4, catalyze the copper-dependent crosslinking of collagens and elastin within the extracellular matrix (ECM). Elevated LOX expression is associated with higher incidence and worse prognosis in multiple cancers, including colorectal, breast, pancreatic, and head and neck.

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Alpha-synuclein pathology enhances peripheral and CNS immune responses to bacterial endotoxins.

Neurobiol Dis

December 2024

Department of Pharmacology, Toxicology, and Pharmacy, University of Veterinary Medicine Hannover, Bünteweg 17, 30559 Hannover, Germany. Electronic address:

Increasing evidence points to infectious diseases as contributor to the pathogenesis of neurodegeneration in Parkinson's disease (PD), probably driven by a peripheral and CNS inflammatory response together with alpha-synuclein (aSyn) pathology. Pro-inflammatory lipopolysaccharide (LPS) endotoxin is suggested as a risk factor, and LPS shedding gram-negative bacteria are more prevalent in the gut-microbiome of PD patients. Here, we investigated whether LPS could contribute to the neurodegenerative disease progression via neuroinflammation, especially under conditions of aSyn pathology.

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The concept of immunothrombosis in pancreas transplantation.

Am J Transplant

December 2024

Institut de Transplantation-Urologie-Néphrologie (ITUN), Nantes University Hospital, Nantes, France; Nantes Université, INSERM, Center for Research in Transplantation and Translational Immunology, UMR 1064. Electronic address:

Early failure of a pancreatic allograft due to complete thrombosis has an incidence of approximately 10% and is the main cause of comorbidity in pancreas transplantation. Although several risk factors have been identified, the exact mechanisms leading to this serious complication are still unclear. In this review, we define the roles of the individual components involved during sterile immunothrombosis-namely endothelial cells, platelets, and innate immune cells.

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Protective effects of Mycobacterium vaccae ATCC 15483 against "Western"-style diet-induced weight gain and visceral adiposity in adolescent male mice.

Brain Behav Immun

December 2024

Department of Integrative Physiology, University of Colorado Boulder, Boulder, CO 80309, USA; Department of Psychology and Neuroscience, University of Colorado Boulder, Boulder, CO 80309, USA; Center for Microbial Exploration, University of Colorado Boulder, Boulder, CO 80309, USA; Center for Neuroscience, University of Colorado Boulder, Boulder, CO 80309, USA; Department of Physical Medicine and Rehabilitation and Center for Neuroscience, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA. Electronic address:

The prevalence of noncommunicable inflammatory disease is increasing in modern urban societies, posing significant challenges to public health. Novel prevention and therapeutic strategies are needed to effectively deal with this issue. One promising approach is leveraging microorganisms such as Mycobacterium vaccae ATCC 15483, known for its anti-inflammatory, immunoregulatory, and stress-resilience properties.

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The complex interplay between redox dysregulation and mTOR signaling pathway in cancer: A rationale for cancer treatment.

Biochem Pharmacol

December 2024

Química y Farmacia, Facultad de Ciencias de la Salud, Universidad Arturo Prat, 1100000 Iquique, Chile; Instituto de Química Medicinal, Universidad Arturo Prat, 1100000 Iquique, Chile; Research Group in Metabolism and Nutrition, Louvain Drug Research Institute, Université catholique de Louvain, 1200 Brussels, Belgium. Electronic address:

The mechanistic target of rapamycin (mTOR) is a highly conserved serine/threonine kinase that plays a critical role in regulating cellular processes such as growth, proliferation, and metabolism in healthy cells. Dysregulation of mTOR signaling and oxidative stress have been implicated in various diseases including cancer. This review aims to provide an overview of the current understanding of mTOR and its involvement in cell survival and the regulation of cancer cell metabolism as well as its complex interplay with reactive oxygen species (ROS).

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Background: Mechanically ventilated critically ill patients often develop pleural effusions, which may impact lung compliance and expansion. This systematic review explores the management of pleural effusion in the critically ill population.

Methods: A comprehensive literature search was performed.

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Evaluating glaucoma in myopic eyes: Challenges and opportunities.

Surv Ophthalmol

December 2024

Hamilton Glaucoma Center, Shiley Eye Institute, Viterbi Family Department of Ophthalmology, UC San Diego, La Jolla, CA, United States. Electronic address:

The increasing global prevalence of myopia presents a significant public health concern, and growing evidence has demonstrated that myopia is a major risk factor for the development of open-angle glaucoma. Therefore, timely detection and management of glaucoma in myopic patients are crucial; however, identifying the structural alterations of glaucoma in the optic nerve head (ONH) and retinal tissues of myopic eyes using standard diagnostic tools such as fundus photography, optical coherence tomography (OCT), and OCT angiography (OCTA) presents challenges. Additionally, myopia-related perimetric defects can be confounded with glaucoma-related defects.

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Background: A significant proportion of individuals with symptoms of sexually transmitted infection (STI) delay or avoid seeking healthcare, and digital diagnostic tools may prompt them to seek healthcare earlier. Unfortunately, none of the currently available tools fully mimic clinical assessment or cover a wide range of STIs.

Methods: We prospectively invited attendees presenting with STI-related symptoms at Melbourne Sexual Health Centre to answer gender-specific questionnaires covering the symptoms of 12 common STIs using a computer-assisted self-interviewing system between 2015 and 2018.

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Transferable automatic hematological cell classification: Overcoming data limitations with self-supervised learning.

Comput Methods Programs Biomed

December 2024

Institute for Applied Medical Informatics, University Medical Center Hamburg-Eppendorf, Christoph-Probst-Weg 1, 20251 Hamburg, Germany; Institute of Computational Neuroscience, University Medical Center Hamburg-Eppendorf, Martinistr. 52, 20246 Hamburg, Germany; Center for Biomedical Artificial Intelligence (bAIome), University Medical Center Hamburg-Eppendorf, Martinistr. 52, 20246 Hamburg, Germany. Electronic address:

Background And Objective: Classification of peripheral blood and bone marrow cells is critical in the diagnosis and monitoring of hematological disorders. The development of robust and reliable automatic classification systems is hampered by data scarcity and limited model generalizability across laboratories. The present study proposes the integration of self-supervised learning (SSL) into cell classification pipelines to address these challenges.

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Background: There is limited evidence on point-of-care ultrasound for tuberculosis (TB), but studies suggest high sensitivity, especially for lung ultrasound (LUS). However, insufficient data are available on specificity of the examination and its generalizability to a broader patient population.

Aims: Our study aimed to establish accuracy for lung, chest, and abdominal ultrasound, individually and in combination, for TB diagnosis.

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Background: The relationship between the extent and severity of stress-induced ischemia and the extent and severity of anatomic coronary artery disease (CAD) in patients with obstructive CAD is multifactorial and includes the intensity of stress achieved, type of testing used, presence and extent of prior infarction, collateral blood flow, plaque characteristics, microvascular disease, coronary vasomotor tone, and genetic factors. Among chronic coronary disease participants with site-determined moderate or severe ischemia, we investigated associations between ischemia severity on stress testing and the extent of CAD on coronary computed tomography angiography.

Methods: Clinically indicated stress testing included nuclear imaging, echocardiography, cardiac magnetic resonance imaging, or nonimaging exercise tolerance test.

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Background: Recent studies highlight the increasing adoption of single-position prone lateral(SP-PL) and single-position lateral decubitus(SP-LD) in Minimally Invasive Spine Surgery(MISS) to reduce operative time, enhance patient safety, and improve surgical accessibility.

Objective: To assess the differences between SP-PL and SP-LD achievement of optimal postoperative outcomes and post-operative complication rates.

Study Design: Retrospective review of prospectively collected MIS database.

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Background: The impact of radiotherapy on the oncologic outcome of retroperitoneal liposarcoma (RPLS) remains controversial. The aim of this study was to evaluate the effect of radiotherapy on disease-specific survival (DSS) in a cohort of patients with RPLSs.

Methods: In this population-based, retrospective cohort study, patients with localized RPLSs who underwent surgical therapy were identified from the Surveillance, Epidemiology, and End Results-17 cancer registry program.

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