E4F1 coordinates pyruvate metabolism and the activity of the elongator complex to ensure translation fidelity during brain development.

Pyruvate metabolism defects lead to severe neuropathies such as the Leigh syndrome (LS) but the molecular mechanisms underlying neuronal cell death remain poorly understood. Here, we unravel a connection between pyruvate metabolism and the regulation of the epitranscriptome that plays an essential role during brain development. Using genetically engineered mouse model and primary neuronal cells, we identify the transcription factor E4F1 as a key coordinator of AcetylCoenzyme A (AcCoA) production by the pyruvate dehydrogenase complex (PDC) and its utilization as an essential co-factor by the Elongator complex to acetylate tRNAs at the wobble position uridine 34 (U).

Quantum key distribution implemented with d-level time-bin entangled photons.

High-dimensional photon states (qudits) are pivotal to enhance the information capacity, noise robustness, and data rates of quantum communications. Time-bin entangled qudits are promising candidates for implementing high-dimensional quantum communications over optical fiber networks with processing rates approaching those of classical telecommunications. However, their use is hindered by phase instability, timing inaccuracy, and low scalability of interferometric schemes needed for time-bin processing.

Structural and electronic features enabling delocalized charge-carriers in CuSbSe.

Inorganic semiconductors based on heavy pnictogen cations (Sb and Bi) have gained significant attention as potential nontoxic and stable alternatives to lead-halide perovskites for solar cell applications. A limitation of these novel materials, which is being increasingly commonly found, is carrier localization, which substantially reduces mobilities and diffusion lengths. Herein, CuSbSe is investigated and discovered to have delocalized free carriers, as shown through optical pump terahertz probe spectroscopy and temperature-dependent mobility measurements.

Single-cell data reveal heterogeneity of investment in ribosomes across a bacterial population.

Ribosomes are responsible for the synthesis of proteins, the major component of cellular biomass. Classical experiments have established a linear relationship between the fraction of resources invested in ribosomal proteins and the rate of balanced growth of a microbial population. Very little is known, however, about how the investment in ribosomes varies over individual cells in a population.

Essential and dual effects of Notch activity on a natural transdifferentiation event.

Cell identity can be reprogrammed, naturally or experimentally, albeit with low frequency. Why some cells, but not their neighbours, undergo a cell identity conversion remains unclear. We find that Notch signalling plays a key role to promote natural transdifferentiation in C.

Neurofilament Light Chain under the Lens of Structural Mass Spectrometry.

Neurofilament light chain (NfL) is an early nonspecific biomarker in neurodegenerative diseases and traumatic brain injury, indicating axonal damage. This work describes the detailed structural characterization of a selected primary calibrator with the potential to be used in future reference measurement procedure (RMP) development for the accurate quantification of NfL. As a part of the described workflow, the sequence, higher-order structure as well as solvent accessibility, and hydrogen-bonding profile were assessed under three different conditions in KPBS, artificial cerebrospinal fluid, and artificial cerebrospinal fluid in the presence of human serum albumin.

Prior Anti-TNF Exposure Is Associated with an Increased Risk of Short- and Long-Term Colectomy in Acute Severe Ulcerative Colitis.

Background: Acute severe ulcerative colitis (ASUC) affects up to 25% of patients with UC and is associated with an increased risk of colectomy. Despite improvements in medical management, individual patient prognostication and risk stratification in ASUC remains challenging. We explored clinical, biochemical, and endoscopic factors as potential predictors for colectomy in patients hospitalized with ASUC.

Hydroxytyrosol-rich Olive Mill Wastewater, A Potential Protector Against Dyslipidemia, Diabetes and Diabetic Retinopathy in Psammomys obesus.

Olive mill wastewater (OMWW), a byproduct of olive oil extraction, constitutes a natural resource of phenolic compounds. Hydroxytyrosol (HT), the predominant compound, exhibits antioxidant, anti-inflammatory, and neuroprotective effects. This research aims to evaluate the effect of OMWW bioproduct rich in HT on retinal glial function, glutamate metabolism and synaptic transmission alterations mediated by hyperglycemia and dyslipidemia in high-calorie diet (HCD) induced diabetic retinopathy (DR) in Psammomys obesus.

EGLN1 mutations in Cis can induce congenital erythrocytosis with thromboses by increasing protein instability.

Hereditary congenital erythrocytosis results from constitutive activation of the hypoxia pathway. This pathway is controlled by regulation of the α isoforms of the hypoxia-inducible factor α/β heterodimer, notably via hydroxylation by prolyl hydroxylase domain 2 (PHD2). Mutations affecting PHD2 are involved in Type 3 erythrocytosis.

Estrogen-regulated lateral septal kisspeptin neurons abundantly project to GnRH neurons and the hypothalamic supramammillary nucleus.

While hypothalamic kisspeptin (KP) neurons play well-established roles in the estrogen-dependent regulation of reproduction, little is known about extrahypothalamic KP-producing (KP) neurons of the lateral septum. As established previously, expression in this region is low and regulated by estrogen receptor- and GABA receptor-dependent mechanisms. Our present experiments on knock-in mice revealed that transgene expression in the LS begins at P33-36 in females and P40-45 in males and is stimulated by estrogen receptor signaling.

Applying the health capability profile: an analytical study of leading causes of death in the USA and of pressing public health issues.

Public health problems are complex; investigating them requires a framework that both accounts for multiple interactions among individuals and their intermediate and broader environment and also integrates equity concerns. Incorporating internal and external influences at the individual level, the health capability profile (HCP)'s 15 different health capabilities address this need.Using a systematic three-step deductive content analysis process, we examine hypothetical case studies representing leading causes of death in the USA (eg, heart disease, cancer and diabetes) as well as pressing public health issues such as COVID-19, alcohol use disorder, stigma and discrimination, intimate partner violence and firearm violence.

Mechanical compressive forces increase PI3K output signaling in breast and pancreatic cancer cells.

Mechanical stresses, including compression, arise during cancer progression. In solid cancer, especially breast and pancreatic cancers, the rapid tumor growth and the environment remodeling explain their high intensity of compressive forces. However, the sensitivity of compressed cells to targeted therapies remains poorly known.

Nutritional Support in the ICU.

Critical illness is a complex condition that can have a devastating impact on health and quality of life. Nutritional support is a crucial component of critical care that aims to maintain or restore nutritional status and muscle function. A one-size-fits-all approach to the components of nutritional support has not proven beneficial.

[Visions and repercussions of identity-release in oocyte and sperm donors : descriptive survey among gamete donors].

Objectives: The Bioethics Law of August 2nd, 2021 established access to origins for people conceived by gamete donation. Two years after the implementation of this disposition, what is the proportion of former gamete donors informed about access to origins, and what is their position on this matter? What could be the potential repercussions of this new law on them? .

Methods: Retrospective single-center cohort study using questionnaires Results: When former gamete donors were asked about access to origins, only 53 % of oocytes donors and 71 % of sperm donors were aware of this measure.

Intractable conflicts over end-of-life decisions: A descriptive and ethical analysis of French case-law.

Context: In European and Anglo-Saxon countries, life-sustaining treatment (LST) limitation decisions precede more than 80% of ICU deaths. However, there is now increasing evidence of disagreement and conflict between clinical teams and family members over LST limitation decisions. In some cases, these conflicts are brought to the courts.

Intrahepatic levels of microbiome-derived hippurate associates with improved metabolic dysfunction-associated steatotic liver disease.

Metabolic dysfunction-associated steatotic liver disease (MASLD) is characterised by lipid accumulation in the liver and is often associated with obesity and type 2 diabetes. The gut microbiome recently emerged as a significant player of liver metabolism and health through the production of bioactive compounds that are beneficial for its host - "postbiotics". Circulating hippurate, a host-microbial co-metabolite produced by conjugating microbial benzoate with glycine in the host-liver, is associated with human gut microbial gene richness and with metabolic health.

Perivascular Chorioretinal Atrophy: an Unusual Feature in Pathologic Myopia Eyes.

Purpose: To describe a new feature in pathologic myopia: perivascular patchy chorioretinal atrophy (PVCA) DESIGN: Cross-sectional study METHODS: 604 eyes of 312 highly myopic patients followed at Strasbourg University Hospitals were reviewed for the presence of PVCA lesions. Demographic, clinical, and paraclinical data (ultra-widefield retinography, optical coherence tomography (OCT), fluorescein and indocyanine green angiography images) were analyzed. Controls were matched for age, sex, and axial length (AL).

Phylogenomics yields new systematic and taxonomical insights for Lissotriton newts, a genus with a strong legacy of introgressive hybridization.

The ease with which genome-wide data can nowadays be collected allows complicated phylogenetic questions to be re-evaluated. Phylogenetic relationships among newts have often proven difficult to resolve due to the prevalence of incomplete lineage sorting and introgressive hybridization. For the newt genus Lissotriton, phylogenetic relationships are not settled and there is controversy surrounding the species status of several taxa.

Lifetime Disability-adjusted Life Year assessment of indolent systemic mastocytosis.

Background: Indolent Systemic Mastocytosis (ISM) is a rare disease associated with numerous and diverse symptoms that significantly impact patients' overall health, psychological, emotional, and professional well-being, ultimately affecting their quality of life.

Objective: We aim to estimate the Disability-adjusted Life Year (DALY) of ISM to assess the burden for patients and society.

Methods: We used prospective and retrospective data on symptoms and quality of life from an ISM population recruited at the French expert center CEREMAST, to estimate Disability Weight allowing DALY calculation.

Evidence linking cadmium and/or lead exposure to immunomodulatory effects in mammals based upon an adverse outcome pathways approach, and research perspectives.

For decades, studies have shown how exposure to non-essential trace metals such as lead (Pb) and cadmium (Cd) largely impact global wildlife. Ecoimmunotoxicology has emerged in the past two decades and focuses on the effects of pollutants on the immune system of free-ranging organisms. Adverse outcome pathways (AOPs) represent a conceptual approach to explore the mechanistic linkage between a molecular initiating event and adverse outcomes, potentially at all biological levels of organisation.

Returning to Work After Childbirth and Women's Mental Health: The Place of Work-Family Conflict and of Social Supports in a Population of Working Mothers in Paris Area.

Objective: Analyzing in a cross-sectional study the factors associated with mental health in 1511 recently delivered women returning to work, the mediating role of work-family interface, and the moderating role of social supports.

Methods: Data were collected at 3 months after returning to work to assess work characteristics (Copenhagen Psychosocial Questionnaire), work-family conflict (Survey Work-Home Interaction Nijmegen), anxiodepressive symptoms (Hospital Anxiety and Depression Scale), commuting, childcare, household demands, and social supports.

Results: Anxiety and, to a lesser extent, depressive symptoms were associated with work factors, the opposite for the nonwork demands.