Establishing a living biobank of pediatric high-grade glioma and ependymoma suitable for cancer pharmacology.

Background: Brain tumors are the deadliest solid tumors in children and adolescents. Most of these tumors are glial in origin and exhibit strong heterogeneity, hampering the development of effective therapeutic strategies. In the past decades, patient-derived tumor organoids (PDT-O) have emerged as powerful tools for modeling tumoral cell diversity and dynamics, and they could then help defining new therapeutic options for pediatric brain tumors.

Isocitrate dehydrogenase wt and IDHmut adult-type diffuse gliomas display distinct alterations in ribosome biogenesis and 2'O-methylation of ribosomal RNA.

Background: High-grade adult-type diffuse gliomas (HGGs) constitute a heterogeneous group of aggressive tumors that are mostly incurable. Recent advances highlighting the contribution of ribosomes to cancer development have offered new clinical perspectives. Here, we uncovered that isocitrate dehydrogenase (IDH)wt and IDHmut HGGs display distinct alterations of ribosome biology, in terms of rRNA epitranscriptomics and ribosome biogenesis, which could constitute novel hallmarks that can be exploited for the management of these pathologies.

Horsemeat consumption in France: Determinants and sustainable market perspectives.

In France, the horsemeat market has been declining for about 50 years and has become a specialized market. Our study aims to understand this decline with regard to the drivers and practices of consumers and non-consumers of this meat, in order to estimate the potential for this market development. To study horsemeat consumption, we analyze two sets of data: two large-scale surveys carried out on the French general population, and one ad-hoc survey focusing more specifically on the representations of horses and horsemeat.

Non-thermal Electroporation Ablation of Epileptogenic Zones Stops Seizures in Mice While Providing Reduced Vascular Damage and Accelerated Tissue Recovery.

In epilepsy, the most frequent surgical procedure is the resection of brain tissue in the temporal lobe, with seizure-free outcomes in approximately two-thirds of cases. However, consequences of surgery can vary strongly depending on the brain region targeted for removal, as surgical morbidity and collateral damage can lead to significant complications, particularly when bleeding and swelling are located near delicate functional cortical regions. Although focal thermal ablations are well-explored in epilepsy as a minimally invasive approach, hemorrhage and edema can be a consequence as the blood-brain barrier is still disrupted.

Factors associated with falls in hemodialysis patients: a case-control study.

Objective: to identify possible associations between a higher probability of falls among hemodialysis patients and laboratory values, comorbidities, pharmacological treatment, hemodynamic changes, dialysis results and stabilometric alterations.

Method: this was a retrospective case-control study with hemodialysis patients. Patients in a hemodialysis unit who had suffered one or more falls were included in the case group.

Effect of vitamin D supplementation on microvascular reactivity in obese adolescents: A randomized controlled trial.

Background And Aim: Childhood obesity is associated with vitamin D (VD) deficiency and vascular dysfunction. Considering evidence indicates that VD may improve vascular function, this study, for the first time, assessed the effect of VD supplementation on microvascular reactivity in obese adolescents (OA).

Methods And Results: This randomized controlled trial included 26 OA, receiving fruit juice with (n = 13) or without VD (4000 IU/d; n = 13) over a 3-month lifestyle program, as well as 23 normal-weight adolescents (controls).

The cationic amino acid exporter Slc7a7 is induced and vital in zebrafish tissue macrophages with sustained efferocytic activity.

Most tissues harbor a substantial population of resident macrophages. Here, we elucidate a functional link between the Slc7a7 cationic amino acid transporter and tissue macrophages. We identified a mutant zebrafish devoid of microglia due to a mutation in the gene.

Time rescaling reproduces EEG behavior during transition from propofol anesthesia-induced unconsciousness to consciousness.

General anesthesia (GA) is a reversible manipulation of consciousness whose mechanism is mysterious at the level of neural networks leaving space for several competing hypotheses. We recorded electrocorticography (ECoG) signals in patients who underwent intracranial monitoring during awake surgery for the treatment of cerebral tumors in functional areas of the brain. Therefore, we recorded the transition from unconsciousness to consciousness directly on the brain surface.

A gene-expression profiling score for prediction of outcome in patients with follicular lymphoma: a retrospective training and validation analysis in three international cohorts.

Background: Patients with follicular lymphoma have heterogeneous outcomes. Predictor models to distinguish, at diagnosis, between patients at high and low risk of progression are needed. The objective of this study was to use gene-expression profiling data to build and validate a predictive model of outcome for patients treated in the rituximab era.

EZH2 alterations in follicular lymphoma: biological and clinical correlations.

The histone methyltransferase EZH2 has an essential role in the development of follicular lymphoma (FL). Recurrent gain-of-function mutations in EZH2 have been described in 25% of FL patients and induce aberrant methylation of histone H3 lysine 27 (H3K27). We evaluated the role of EZH2 genomic gains in FL biology.

Resting state brain dynamics and its transients: a combined TMS-EEG study.

The brain at rest exhibits a spatio-temporally rich dynamics which adheres to systematic behaviours that persist in task paradigms but appear altered in disease. Despite this hypothesis, many rest state paradigms do not act directly upon the rest state and therefore cannot confirm hypotheses about its mechanisms. To address this challenge, we combined transcranial magnetic stimulation (TMS) and electroencephalography (EEG) to study brain's relaxation toward rest following a transient perturbation.

Genomic Copy Number Profiling Using Circulating Free Tumor DNA Highlights Heterogeneity in Neuroblastoma.

Purpose: The tumor genomic copy number profile is of prognostic significance in neuroblastoma patients. We have studied the genomic copy number profile of cell-free DNA (cfDNA) and compared this with primary tumor arrayCGH (aCGH) at diagnosis.

Experimental Design: In 70 patients, cfDNA genomic copy number profiling was performed using the OncoScan platform.

A pavlovian model of the amygdala and its influence within the medial temporal lobe.

Recent advances in neuroscience give us a better view of the inner structure of the amygdala, of its relations with other regions in the Medial Temporal Lobe (MTL) and of the prominent role of neuromodulation. They have particularly shed light on two kinds of neurons in the basal nucleus of the amygdala, the so-called fear neurons and extinction neurons. Fear neurons mediate context-dependent fear by receiving contextual information from the hippocampus, whereas extinction neurons are linked with the medial prefrontal cortex (mPFC) and involved in fear extinction.

Treatment decision-making in the medical encounter: comparing the attitudes of French surgeons and their patients in breast cancer care.

Objectives: To explore attitudes of French surgeons and their patients towards treatment decision-making (TDM) in the medical encounter.

Methods: Surgeons involved in early stage breast cancer and their patients treated in a French cancer care network received a cross-sectional survey questionnaire containing examples of four different approaches to TDM: paternalistic, "some sharing", informed TDM and, shared TDM.

Results: Surgeons' interaction styles were clearly distributed among paternalistic, shared and mixed.

Contribution of respiratory gating techniques for optimization of breast cancer radiotherapy.

A comparative, nonrandomized, multicenter, and prospective analysis were performed between April 2004 and June 2008 in 20 French centers in order to compare clinical aspects of respiratory-gated conformal radiotherapy (RGRT) during breast cancer irradiation versus conventional conformal radiotherapy. The final results based on 233 evaluable patients at 48 months confirm the feasibility and good reproducibility of the RGRT systems. The main results demonstrated a marked reduction of dosimetric parameters predictive of lungs and cardiac toxicities in the RGRT group; especially the dose delivered to the heart during irradiation of the left breast; mostly observed with deep inspiration breath-hold techniques.

Respiratory gating techniques for optimization of lung cancer radiotherapy.

Purpose: The primary objective of the STIC 2003 project was to compare the clinical and economic aspects of respiratory-gated conformal radiotherapy (RGRT), an innovative technique proposed to limit the impact of respiratory movements during irradiation, versus conventional conformal radiotherapy, the reference radiation therapy for lung cancer.

Methods And Materials: A comparative, nonrandomized, multicenter, and prospective cost toxicity analysis was performed in the context of this project between April 2004 and June 2008 in 20 French centers. Only the results of the clinical study are presented here, as the results of the economic assessment have been published previously.

Cancer patients' willingness to pay for blood transfusions at home: results from a contingent valuation study in a French cancer network.

Home blood transfusion may be an interesting alternative to hospital transfusion, especially when given with curative or palliative intent or for terminal care in advanced-stage cancer patients. However, there is limited information about patients' attitude toward this type of care. The purpose of this study was to measure French cancer patients' willingness to pay (WTP) for home blood transfusion and to analyze determinants of their choice.

[Economic assessment of pulsed dose-rate (PDR) brachytherapy with optimized dose distribution for cervix carcinoma].

Purpose: Our study aims at evaluating the cost of pulsed dose-rate (PDR) brachytherapy with optimized dose distribution versus traditional treatments (iridium wires, cesium, non-optimized PDR). Issues surrounding reimbursement were also explored.

Materials And Methods: This prospective, multicentre, non-randomised study conducted in the framework of a project entitled "Support Program for Costly Diagnostic and Therapeutic Innovations" involved 21 hospitals.

Dry anaerobic digestion in batch mode: design and operation of a laboratory-scale, completely mixed reactor.

A laboratory-scale (40 l) reactor was designed to investigate dry anaerobic digestion. The reactor is equipped with an intermittent paddle mixer, enabling complete mixing in the reactor. Three consecutive batch dry digestion tests of municipal solid waste were performed under mesophilic conditions and compared to operation results obtained on a pilot-scale (21 m(3)) with the same feedstock.

[Impact of FDG-PET on radiation therapy: economic results of a STIC study].

The aim of this study is to assess the effects of Positron Emission Tomography (PET) associated with computed tomography (CT) on resource allocation (costs and savings) of the following treatment in radiotherapy for non small cell lung cancers (NSCLC) and Hodgkin's diseases. A national prospective study was conducted in nine hospitals. Two treatment decisions made on the basis of CT only or on PET associated with, were compared in a before-after design.

[The cost of respiration-gated radiotherapy in the framework of a clinical research programme "STIC"].

Purpose: Our study aims to evaluate the impact of the implementation of respiratory gating (RG) on the production cost of radiotherapy, as compared to conformational radiotherapy without RG (comparator) in patients with lung or breast cancers. Issues surrounding reimbursement were also explored.

Materials And Methods: A prospective, multicenter, non-randomised study was conducted in the framework of a project entitled "Support Program for Costly Diagnostic and Therapeutic Innovations".

Analyzing multiple learning effects in health care using multilevel modeling: application to radiotherapy at an early stage of innovation.

Objectives: Learning effects may have considerable influence on the performance of new health technologies, thereby on cost-effectiveness and ultimately on resource allocation. In the area of radiotherapy, equipment is becoming increasingly costly and the analysis of learning effects is complex given that sequential treatments are necessary, with multiple sessions for each patient. Our study aimed at analyzing learning effects in radiotherapy at an early stage of innovation.

The statutory duty of physicians to inform patients versus unmet patients' information needs: the case of breast cancer in France.

Objectives: (1) To explore empirically the extent to which early stage breast cancer patients in France, wish to be informed about their disease and treatments and (2) in view of the statutory duty of physicians to inform patients, to explore, from the patients' point of view, the type of information given by physicians and whether it meets their information needs.

Methods: A retrospective, cross-sectional survey questionnaire using standardized questions was administered by mail to newly diagnosed breast cancer patients and evaluated their relationships with the different physicians involved in their treatment at different points in time. Focus was placed on the relationship between surgeons and patients.