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Miscanthus × giganteus (Miscanthus) is a warm-season perennial grass grown for bioenergy feedstock production. Nitrogen (N) fertilizer management is crucial for the sustainability of Miscanthus production. In our two-year study (2018 and 2019), we investigated the role of vegetation indices (VIs) in evaluating N fertilization (0 N, 56 N, 112 N, and 168 N kg ha−1) impacts on Miscanthus biomass yield and stand health. The flight campaigns were conducted early, middle, and late during the summer growing season. Among the VIs, mid-summer growing season NDRE provided the best prediction of fresh biomass (R2 = 0.87 and 0.97) and dry biomass (R2 = 0.89 and 0.97) in 2018 and 2019, respectively. The VIs generally showed that it was possible to distinguish between 0 N and 168 N treatments, but neither 0 N and 56 N kg ha−1 nor 112 N and 168 N kg ha−1 could be separated. The results from this study highlight the importance of moderate application of N (112 kg N ha−1) in improving and maintaining the stand health and biomass yield of Miscanthus over time and suggest that mid-summer growing season VIs, NDRE in particular, can be useful for assessment of Miscanthus stand health and biomass yield.

The stability of a formulation of 1% N-chlorotaurine (NCT) in a smectite clay as a gel was characterized using a range of physicochemical parameters, and its antimicrobial efficacy was determined against Staphylococcus aureus and Pseudomonas aeruginosa. The stability of the NCT gel was determined by UV–visible spectroscopy. The efficacy against S. aureus and P. aeruginosa was tested in single- and dual-species biofilms using a dynamic in vitro chronic wound infection model and only showed efficacy against S. aureus. The gel proved stable over time at room temperature and at 4 °C with half-life values of ~161 days and 4 years, respectively. The compatibility of NCT with the preferred pH of the clay gel makes this formulation a candidate for durable topical application to chronic wounds.

Missense driver mutations in cancer are concentrated in a few hotspots 1 . Various mechanisms have been proposed to explain this skew, including biased mutational processes 2 , phenotypic differences 3 – 6 and immunoediting of neoantigens 7 , 8 ; however, to our knowledge, no existing model weighs the relative contribution of these features to tumour evolution. We propose a unified theoretical ‘free fitness’ framework that parsimoniously integrates multimodal genomic, epigenetic, transcriptomic and proteomic data into a biophysical model of the rate-limiting processes underlying the fitness advantage conferred on cancer cells by driver gene mutations. Focusing on TP53 , the most mutated gene in cancer 1 , we present an inference of mutant p53 concentration and demonstrate that TP53 hotspot mutations optimally solve an evolutionary trade-off between oncogenic potential and neoantigen immunogenicity. Our model anticipates patient survival in The Cancer Genome Atlas and patients with lung cancer treated with immunotherapy as well as the age of tumour onset in germline carriers of TP53 variants. The predicted differential immunogenicity between hotspot mutations was validated experimentally in patients with cancer and in a unique large dataset of healthy individuals. Our data indicate that immune selective pressure on TP53 mutations has a smaller role in non-cancerous lesions than in tumours, suggesting that targeted immunotherapy may offer an early prophylactic opportunity for the former. Determining the relative contribution of immunogenicity and oncogenic function to the selective advantage of hotspot mutations thus has important implications for both precision immunotherapies and our understanding of tumour evolution. A mathematical framework to estimate the fitness of cancer driver mutations by integrating mutational bias, oncogenicity and immunogenicity finds fundamental trade-offs in cancer evolution.

We analyzed maternal plasma cell-free DNA samples from twin pregnancies in a prospective blinded study to validate a single-nucleotide polymorphism (SNP)-based non-invasive prenatal test (NIPT) for zygosity, fetal sex, and aneuploidy. Zygosity was evaluated by looking for either one or two fetal genome complements, fetal sex was evaluated by evaluating Y-chromosome loci, and aneuploidy was assessed through SNP ratios. Zygosity was correctly predicted in 100% of cases (93/93; 95% confidence interval (CI) 96.1%–100%). Individual fetal sex for both twins was also called with 100% accuracy (102/102; 95% weighted CI 95.2%–100%). All cases with copy number truth were also correctly identified. The dizygotic aneuploidy sensitivity was 100% (10/10; 95% CI 69.2%–100%), and overall specificity was 100% (96/96; 95% weighted CI, 94.8%–100%). The mean fetal fraction (FF) of monozygotic twins (n = 43) was 13.0% (standard deviation (SD), 4.5%); for dizygotic twins (n = 79), the mean lower FF was 6.5% (SD, 3.1%) and the mean higher FF was 8.1% (SD, 3.5%). We conclude SNP-based NIPT for zygosity is of value when chorionicity is uncertain or anomalies are identified. Zygosity, fetal sex, and aneuploidy are complementary evaluations that can be carried out on the same specimen as early as 9 weeks’ gestation.

The primary aim of the present study is to explore whether brief education can change Chinese adolescents’ and parents’ beliefs about when counselors would breach confidentiality. The two secondary aims are to examine whether the brief education (1) increases adolescents’ willingness to share private information with their counselor and (2) decreases parents’ expectations of the amount of information their child’s counselor would divulge to them. Results showed that adolescents and parents who read a brief passage about the limitations of confidentiality were significantly less likely to believe counselors would breach confidentiality in situations where counselors reported they would not likely breach confidentiality. Regarding our secondary research aims, results indicate that education increases adolescents’ willingness to share more sensitive information, such as about suicidality and drug use, but it does not change parents’ expectations to have most of the information divulged to them by their child’s counselor.

This study characterizes the use of HEPA air filters provided to 89 households participating in an intervention study investigating the respiratory health of children with asthma. Free-standing filters were placed in the child's bedroom and monitored continuously for nearly a year in each household. Filter use was significantly affected by study phase, season, and monitoring week. During the “intensive” weeks when a community education worker and a field technician visited the household, the use rate averaged 70 ± 33 %. During season-long “non-intensive” periods between seasonal visits, use dropped to 34 ± 30 %. Filter use rapidly decreased during the 3 to 4 weeks following each intensive, and was slightly higher in spring, summer, and in the evening and at night when the child was likely to be home, although households did not follow consistent diurnal patterns. While participants expressed an understanding of the benefits of filter use and reported good experiences with them, use rates were low, particularly during unobserved non-intensive periods. The provision of free-standing air filters to individuals or households must be considered an active intervention that requires monitoring and evaluation; otherwise, unknown and unexpected patterns of filter use may alter and possibly bias results due to exposure misclassification.

Community Action Against Asthma (CAAA) is a community-based participatory research (CBPR) project that assesses the effects of outdoor and indoor air quality on exacerbation of asthma in children, and tests household- and neighborhood-level interventions to reduce exposure to environmental asthma triggers. Representatives of community-based organizations, academia, an integrated health system, and the local health department work in partnership on CAAA's Steering Committee (SC) to design and implement the project. To conduct a process evaluation of the CAAA community-academic partnership. In-depth interviews containing open-ended questions were conducted with SC members. Analysis included established methods for qualitative data, including focused coding and constant comparison methods. Community setting in Detroit, Michigan. Twenty-three members of the CAAA SC. Common themes identified by SC members relating to the partnership's ability to achieve project goals and the successes and challenges facing the partnership itself. Identified partnership accomplishments included: successful implementation of a complex project, identification of children with previously undiagnosed asthma, and diverse participation and community influence in SC decisions. Challenges included ensuring all partners' influence in decision-making, the need to adjust to \"a different way of doing things\" in CBPR, constraints and costs of doing CBPR felt by all partners, ongoing need for communication and maintaining trust, and balancing the needs of science and the community through intervention. CBPR can enhance and facilitate basic research, but care must be given to trust issues, governance issues, organizational culture, and costs of participation for all organizations involved.

We report the case of a seventy-five year old woman with a sporadic primary malignant intracerebral nerve sheath tumor (MINST). These tumors fall within the spectrum of malignant peripheral nerve sheath tumors (MPNST) but confirming the diagnosis of a MINST can be difficult due to its rarity and unusual intraparenchymal location. Radiographically, MINST’s mimic malignant glioma and should be considered in the differential diagnosis of enhancing cerebral lesions. In this report, we present a comprehensive panel of histological, immunohistochemical, ultrastructural, and genetic considerations that may be used to diagnosis MINST based on their similarities to MPNSTs and brain parenchyma location.