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Newton-X is an open-source computational platform to perform nonadiabatic molecular dynamics based on surface hopping and spectrum simulations using the nuclear ensemble approach. Both are among the most common methodologies in computational chemistry for photophysical and photochemical investigations. This paper describes the main features of these methods and how they are implemented in Newton-X. It emphasizes the newest developments, including zero-point-energy leakage correction, dynamics on complex-valued potential energy surfaces, dynamics induced by incoherent light, dynamics based on machine-learning potentials, exciton dynamics of multiple chromophores, and supervised and unsupervised machine learning techniques. Newton-X is interfaced with several third-party quantum-chemistry programs, spanning a broad spectrum of electronic structure methods.In most cases, children with SARS-CoV-2 have a mild infection. However, very rarely, some children may develop a severe disease called multisystem inflammatory syndrome in children temporally associated with COVID-19 (MIS-C). Given its recent emergence, some aspects of its pathophysiology are still unknown. The possibility of recurrence in case of reinfection or SARS-CoV-2 vaccination are new questions we are facing. Here we report a case series of 4 adolescent patients who developed MIS-C and, months later, received the SARS-CoV-2 vaccine with messenger RNA (mRNA) platforms without disease recurrence or cardiac adverse events.
Floral stalk height is known to affect seed dispersal of wind-dispersed grassland species, but it may also affect the attractiveness of flowers and fruits of animal-pollinated and animal-dispersed plants. Stalk height may thus be responsive to selection via interactions with both mutualist pollinators and seed dispersers, but also antagonist florivores and seed predators. In this study, we aimed to determine the effect of pollinators and seed predators on selection on floral stalk height in the insect-pollinated and wind-dispersed, alpine, andromonoecious herb Pulsatilla alpina, whose flowers also vary in their sex allocation and thus in the resources available to both mutualists and antagonists.

We measured the resource status of individuals in terms of their size and the height of the vegetation surrounding plants of P. alpina at 11 sites. In one population, we recorded floral stalk height over an entire growing season and investigated its association with floral morphology and floral sex allocation (piccess and its likely role in the evolution of sex-allocation strategies, especially andromonoecy.
Stalk height of P. Asciminib in vivo alpina is a costly trait that affects female reproductive success via interactions with both mutualists and antagonists. We discuss the interplay between the resource status and selection imposed on female reproductive success and its likely role in the evolution of sex-allocation strategies, especially andromonoecy.The evidence of waning immunity offered by COVID-19 vaccines suggests that widespread and regular uptake of routine COVID-19 booster vaccines will be needed. In order to understand the hesitancy toward COVID-19 boosters, we examined the barriers and facilitators to receiving regular COVID-19 boosters in a sample of young adults in the UK. A cross-sectional survey was completed by 423 participants (M = 22.8; SD = 8.6 years) and assessed intention to receive regular COVID-19 boosters, the 7C antecedents of vaccination (i.e. confidence, complacency, constraints, calculation, collective responsibility, and compliance and conspiracy), and any previous experience of side-effects from COVID-19 vaccines. Participants also provided a free text qualitative response outlining their barriers and facilitators to receiving regular COVID-19 boosters. Overall, 42.8% of the sample were hesitant about receiving regular COVID-19 boosters. Multivariate logistic regression analysis showed that intention to accept future boosters was associated with having higher levels of confidence in, and compliance with, vaccines, lower levels of complacency, calculation and perceptions of constraints to vaccination, and having experienced less severe side effects from the COVID-19 vaccines. Qualitative responses highlighted the main barriers included experiencing side effects with previous COVID-19 vaccines and inaccessibility of vaccination services. Key facilitators included protecting the health of friends and family members, protecting personal health, and maintaining regular activities. Our findings suggest that interventions targeted at increasing booster uptake should address the experience of side effects while also emphasizing the positive vaccine benefits relating to the individual's health and the maintenance of their regular work and social activities.Protein-polysaccharide composite materials have generated much interest due to their potential use in medical science and biotechnology. A comprehensive understanding of the assembly mechanism and the mesoscale architecture is needed for fabricating protein-polysaccharide composite materials with desired properties. In this study, complex assemblies were built on silica surfaces through a layer-by-layer (LbL) approach using bovine beta-lactoglobulin variant A (βLgA) and pectin as model protein and polysaccharide, respectively. We demonstrated the combined use of quartz crystal microbalance with dissipation monitoring (QCM-D) and neutron reflectometry (NR) for elucidating the assembly mechanism as well as the internal architecture of the protein-polysaccharide complexes formed at the solid-liquid interface. Our results show that βLgA and pectin interacted with each other and formed a cohesive matrix structure at the interface consisting of intertwined pectin chains that were cross-linked by βLgA-rich domains. Although the complexes were fabricated in an LbL fashion, the complexes appeared to be relatively homogeneous with βLgA and pectin molecules spatially distributed within the matrix structure. Our results also demonstrate that the density of βLgA-pectin complex assemblies increased with both the overall and local charge density of pectin molecules. Therefore, the physical properties of the protein-polysaccharide matrix structure, including density and level of hydration, can be tuned by using polysaccharides with varying charge patterns, thus promoting the development of composite materials with desired properties.Photoswitchable lipids have emerged as attractive tools for the optical control of lipid bioactivity, metabolism, and biophysical properties. Their design is typically based on the incorporation of an azobenzene photoswitch into the hydrophobic lipid tail, which can be switched between its trans- and cis-form using two different wavelengths of light. While glycero- and sphingolipids have been successfully designed to be photoswitchable, isoprenoid lipids have not yet been investigated. Herein, we describe the development of photoswitchable analogs of an isoprenoid lipid and systematically assess their potential for the optical control of various steps in the isoprenylation processing pathway of CaaX proteins in Saccharomyces cerevisiae. One photoswitchable analog of farnesyl diphosphate (AzoFPP-1) allowed effective optical control of substrate prenylation by farnesyltransferase. The subsequent steps of isoprenylation processing (proteolysis by either Ste24 or Rce1 and carboxyl methylation by Ste14) were less affected by photoisomerization of the group introduced into the lipid moiety of the substrate a-factor, a mating pheromone from yeast. We assessed both proteolysis and methylation of the a-factor analogs in vitro and the bioactivity of a fully processed a-factor analog containing the photoswitch, exogenously added to cognate yeast cells. Combined, these data describe the first successful conversion of an isoprenoid lipid into a photolipid and suggest the utility of this approach for the optical control of protein prenylation.Visualizing intracellular microRNA (miRNA) is of great importance for revealing its roles in the development of disease. However, cell membrane barrier, complex intracellular environment and low abundance of target miRNA are three main challenges for efficient imaging of intracellular miRNA. Here, we report a size-controllable and self-assembled DNA nanosphere with ATP-fueled dissociation property for amplified miRNA imaging in live cells and mice. The DNA nanosphere was self-assembled from Y-shaped DNA (Y-DNA) monomers through predesigned base pair hybridization, and the size could be easily controlled by varying the concentration of Y-DNA. Once the nanosphere was internalized into cells, the intracellular specific target miRNA would trigger the cyclic dissociation of the DNA nanosphere driven by ATP, resulting in amplified FRET signal. The programmable DNA nanosphere has been proven to work well for detecting the expression of miRNA in cancer cells and in mice, which demonstrates its fairish cell penetration, stability and sensitivity.Introduction. In pediatric intensive care units, a large number of drugs are used, many of which are prescribed for condition beyond those established in their summary of product characteristics (off-label and unlicensed drug prescriptions). The objective of this study was to describe drug use and estimate the prevalence of off-label and unlicensed drugs in a pediatric intensive care unit of a tertiary care Spanish hospital. Population and methods. Cross-sectional, observational study with a single cohort of children admitted to a pediatric intensive care unit. The study was conducted in 2017. Each drug prescription, its conditions of use and administration were reviewed. In addition, the summary of product characteristics of drugs used were analyzed in order to identify whether they were used according to their conditions of authorization, or whether they were used in an off-label or unlicensed manner. Results. The sample included 97 patients. At least one off-label or unlicensed drug was administered to 74.2% (n = 72) of patients; 23.8% (n = 243) corresponded to off-label prescriptions and 8.7% (n = 89), unlicensed prescriptions. A sub-analysis by age group showed that the age group that received a higher number of total prescriptions (n = 611) and a higher percentage of off-label and/or unlicensed drug prescriptions (38.4%) was under 2 years of age. Conclusions. Off-label and/or unlicensed drug prescription is a common practice in the pediatric intensive care unit. This study allowed us to document the complexity of therapeutics in children.Cystic fibrosis (CF) is a multisystemic, autosomal recessive disorder caused by mutations in the cystic fibrosis transmembrane conductance regulator (CFTR) gene with the majority of morbidity and mortality extending from lung disease. Single-cell RNA-sequencing (scRNA-seq) has been leveraged in the lung and elsewhere in the body to articulate discrete cell populations, describing cell types, states, and lineages as well as their roles in health and disease. In this perspective translational review, we provide an overview of the current applications of scRNA-seq to the study of the normal and CF lungs, allowing for the beginning of a new cellular and molecular narrative of CF lung disease, and highlight some of the future opportunities to further leverage scRNA-seq and complementary single-cell technologies in the study of CF as we bridge from scientific understanding to clinical application.
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