Microprofiling real time nitric oxide flux for field studies using a stratified nanohybrid carbon-metal electrode.

Nitric oxide (NO) is an important signaling molecule that is involved in stress response, homeostasis, host defense, and cell development. In most cells, NO levels are in the femtomolar to micromolar range, with extracellular concentrations being much lower. Thus, real time measurement of spatiotemporal NO dynamics near the surface of living cells/tissues is a major challenge.

Assessing psychosocial risk factors in children with Sickle Cell Disease.

Background: Individuals with Sickle Cell Disease (SCD) are a minoritized and marginalized community that have disparate health outcomes as a result of systemic racism and disease-related stigma. The purpose of this study was to determine the psychosocial risk factors for families caring for children with SCD at a pediatric SCD center through use of the Psychosocial Assessment Tool (PAT), a validated caregiver-report screener.

Methods: The PAT was administered annually during routine clinical visits and scored by the SCD Social Worker to provide tailored resources to families.

Toward Sustainable Polydienes.

The sustainable management of polydiene waste represents a formidable challenge in the realm of polymer chemistry, given the extensive industrial utilization of polydienes due to their superior elastomeric properties. This comprehensive Perspective addresses the multifaceted obstacles hindering efficient recycling of polydienes, encompassing environmental concerns, technical limitations, and economic disincentives. We systematically dissect the influence of polydienes' chemical structures on their recyclability, tracing the evolution of polydiene utilization and disposal practices while assessing the current landscape of waste management strategies.

PSMC2 promotes resistance against temozolomide in glioblastoma via suppressing JNK-mediated autophagic cell death.

Temozolomide is universally used to treat glioblastoma due to its unique ability to cross the blood-brain barrier and inhibit tumor growth through DNA alkylation. However, over time, the inevitable emergence of resistance to temozolomide impedes successful treatment of this cancer. As a result, there is an urgent need to identify new therapeutic targets to improve treatment outcomes for this malignancy.

Identifying dissolved reactive phosphorus sources in agricultural runoff and leachate using phosphate oxygen isotopes.

Agricultural phosphorus (P) losses may result from either recently applied fertilizers or from P accumulated in soil and sediment. While both P sources pose an environmental risk to freshwater systems, differentiating between sources is crucial for identifying and implementing management practices to decrease loss. In this study, laboratory rainfall simulations were completed on runoff boxes and undisturbed soil columns before and after fertilizer application.

Defining the Speciation, Coordination Chemistry, and Lewis Acid Catalysis of Electronically Diverse Zinc Benzoates.

Zinc benzoates may provide an element of tunability that is not available to their ubiquitous acetate analogues. Unfortunately, the synthesis, speciation, and coordination chemistry of zinc benzoates are less developed than the acetates. In this study, we systematically investigate zinc benzoates to understand their propensity to favor solvate (Zn(OCAr)(L)) or cluster (ZnO(OCAr)) formation as well as their utility as metal complex precursors.

Left atrial reservoir strain as a predictor of cardiac dysfunction in a murine model of pressure overload.

Aim: Left atrial (LA) strain is emerging as a valuable metric for evaluating cardiac function, particularly under pathological conditions such as pressure overload. This preclinical study investigates the predictive utility of LA strain on cardiac function in a murine model subjected to pressure overload, mimicking pathologies such as hypertension and aortic stenosis.

Methods: High-resolution ultrasound was performed in a cohort of mice (n = 16) to evaluate left atrial and left ventricular function at baseline and 2 and 4 weeks after transverse aortic constriction (TAC).

The Effects of Gymnastics Programs with Different Cognitive Loads on Working Memory and Prefrontal Cortex Oxygenation: A Randomized Controlled Trial.

Purpose: This study used functional near-infrared spectroscopy (fNIRS) to investigate the effects of gymnastics programs with high versus low cognitive load on children's visuospatial working memory (VSWM) and prefrontal cortex (PFC) oxygenation.

Methods: Eighty-one healthy children aged 7 to 10 from Taipei City were randomly assigned to high cognitive load (HG), low cognitive load (LG), and control (SC) groups. The HG and LG groups underwent an 8-week gymnastics program with different levels of cognitive load, while the SC group participated in a static course.

Genome-wide association study and genomic prediction of root system architecture traits in Sorghum (Sorghum bicolor (L.) Moench) at the seedling stage.

Root system architecture (RSA) plays an important role in plant adaptation to drought stress. However, the genetic basis of RSA in sorghum has not been adequately elucidated. This study aimed to investigate the genetic bases of RSA traits through genome-wide association studies (GWAS) and determine genomic prediction (GP) accuracy in sorghum landraces at the seedling stage.

Multi-Omics Assessment of Puff Volume-Mediated Salivary Biomarkers of Metal Exposure and Oxidative Injury Associated with Electronic Nicotine Delivery Systems.

Background: Since their inception, electronic nicotine delivery systems (ENDS) have gained increasing popularity, sparking a vaping epidemic among adolescents in the US and globally. Several ENDS safety concerns have emerged as device features and formats that contribute to heavy metal exposure and toxicity continue to evolve and outpace regulatory efforts.

Objectives: Our objective was to integrate ENDS emission profiles with salivary proteome and metabolome data to characterize exposure factors that may influence adverse vaping-mediated health outcomes.

Structural brain correlates of externalizing traits and symptoms in the IMAGEN sample.

The evidence supporting the presence of individual brain structure correlates of the externalizing spectrum (EXT) is sparse and mixed. To date, large-sample studies of brain-EXT relations have mainly found null to very small effects by focusing exclusively on either EXT-related personality traits (e.g.

Who, how, and when? New perspectives on longstanding issues in the study of externalizing psychopathology.

This special issue of aimed to provide methodologically robust research conducted across the globe that addressed a variety of questions related to externalizing psychopathology across the lifespan. Across all included articles are examples of sophisticated statistical approaches or innovative methods, including articles that evaluate the psychometrics of different structural models of externalizing psychopathology, test the invariance of indicators of externalizing problems over time or across different racial/ethnic groups, and leverage experience sampling methodologies. In what follows, we provide a brief overview of each of the eight articles included in this special issue.

Structure of E6AP in complex with HPV16-E6 and p53 reveals a novel ordered domain important for E3 ligase activation.

High-risk human papillomavirus E6 oncoprotein is a model system for the recognition and degradation of cellular p53 tumor suppressor protein. There remains a gap in the understanding of the ubiquitin transfer reaction, including placement of the E6AP catalytic HECT domain of the ligase concerning the p53 substrate and how E6 itself is protected from ubiquitination. We determined the cryoelectron microscopy (cryo-EM) structure of the E6AP/E6/p53 complex, related the structure to in vivo modeling of the tri-molecular complex, and identified structural interactions associated with activation of the ubiquitin ligase function.

Single cell derived multicellular meristem: insights into male-to-hermaphrodite conversion and de novo meristem formation in ceratopteris.

Land plants alternate between asexual sporophytes and sexual gametophytes. Unlike seed plants, ferns develop free-living gametophytes. Gametophytes of the model fern Ceratopteris exhibit two sex types: hermaphrodites with pluripotent meristems and males lacking meristems.

The Impact of Storage Conditions on Stool Smellprints as Assessed by an Electronic Nose.

Necrotizing enterocolitis (NEC) is a devastating disease of the neonatal gastrointestinal tract. Volatile organic compounds (VOCs), odoriferous compounds released as a byproduct of bacterial metabolism, can be used as a proxy for gut health. We hypothesized that patients with NEC would have different microbial profiles and elicit different VOC signatures as assessed by gas chromatography/mass spectrometry (GC/MS) or an electronic nose compared to controls.

Spatiotemporal Mapping of Ultrafine Particle Fluxes in an Office HVAC System with a Diffusion Charger Sensor Array.

Commercial HVAC systems intended to mitigate indoor air pollution are operated based on standards that exclude aerosols with smaller diameters, such as ultrafine particles (UFPs, D ≤ 100 nm), which dominate a large proportion of indoor and outdoor number-based particle size distributions. UFPs generated from occupant activities or infiltrating from the outdoors can be recirculated and accumulate indoors when they are not successfully filtered by an air handling unit. Monitoring UFPs in real occupied environments is vital to understanding these source and mitigation dynamics, but capturing their rapid transience across multiple locations can be challenging due to high-cost instrumentation.

Evaluation of Probiotic Effects on the Growth Performance and Microbiome of Nile Tilapia () in a High-Density Biofloc System.

Biofloc technology is an aquaculture production system that has gained popularity with tilapia production. Probiotics provide benefits for the host and/or aquatic environments by both regulating and modulating microbial communities and their metabolites. When a probiotic feed is combined with a biofloc system, the production amount may be improved through better fish growth, disease resistance, and/or improved water quality by reducing organic matter and stabilizing metrics such as pH and components of the nitrogen cycle.

Unguarded liabilities: complex amino acid dependence exposes unique avenues of inhibition.

Recent reports from the Centers for Disease Control and Prevention approximate 500,000 cases of Lyme disease in the United States yearly, a significant economic burden on the healthcare system. The standard treatment for Lyme disease includes broad-spectrum antibiotics, which may be administered for extensive periods of time and result in significant impacts to the patient. Recently, we demonstrated that , the causative agent of Lyme disease, is uniquely dependent upon peptide acquisition via an oligopeptide transport (Opp) system.

Language about gender/sex should be used intentionally and flexibly.

In their paper, 'Conceptualizing transgender experiences in psychology: Do we have a 'true' gender?' Jackson and Bussey (British Journal of Psychology, 115, 723) critique the idea of having a 'true' gender and propose that the term 'transgender experience' may be more appropriate than 'transgender identity'. In this commentary, I reflect on the usefulness of the terms transgender identity and transgender experience and argue that both hold value and can contribute to a more nuanced discussion of gender/sex. I use the discussion of these two terms as a springboard to make a broader point: As researchers, we should use language about gender/sex flexibly and intentionally.

Altering Lipid A Precursor Ion Types in the Gas Phase for In-Depth Structural Elucidation via Tandem Mass Spectrometry.

Lipid A, a well-known saccharolipid, acts as the inner lipid-glycan anchor of lipopolysaccharides in Gram-negative bacterial cell membranes and functions as an endotoxin. Its structure is composed of two glucosamines with β(1 → 6) linkages and various fatty acyl and phosphate groups. The lipid A structure can be used for the identification of bacterial species, but its complexity poses significant structural characterization challenges.

Resting beat-to-beat blood pressure variability in humans: role of alpha-1 adrenergic receptors.

Purpose: Resting beat-to-beat blood pressure variability is a strong predictor of cardiovascular events and mortality. However, its underlying mechanisms remain incompletely understood. Given that the sympathetic nervous system plays a pivotal role in cardiovascular regulation, we hypothesized that alpha-1 adrenergic receptors (the main sympathetic receptor controlling peripheral vasoconstriction) may contribute to resting beat-to-beat blood pressure variability.

Comparison of Methods of Eliciting Vital Capacity: Forced Versus Slow Vital Capacity.

Background: Methods to elicit the vital capacity (VC) include forced vital capacity (FVC) and slow vital capacity (SVC). Because the FVC maneuver can be affected by air trapping or inefficiencies in lung emptying vs. the SVC, the SVC-FVC difference may be substantial and diagnostically meaningful in elderly individuals and patients with respiratory obstruction.

Long-Range Charge Transport Facilitated by Electron Delocalization in MoS and Carbon Nanotube Heterostructures.

Controlling charge transport at the interfaces of nanostructures is crucial for their successful use in optoelectronic and solar energy applications. Mixed-dimensional heterostructures based on single-walled carbon nanotubes (SWCNTs) and transition metal dichalcogenides (TMDCs) have demonstrated exceptionally long-lived charge-separated states. However, the factors that control the charge transport at these interfaces remain unclear.

N-acetyl-L-cysteine and lauric acid; effective antioxidant and antimicrobial feed additives for juvenile Pacific white shrimp (Litopenaeus vannamei) cultured at high stocking density.

Present study aimed at improving the immune and antioxidant response of Pacific white shrimp (Litopenaeus vannamei) cultured at high stocking density fed with 0.2% supplementation of lauric acid (LA) and N-acetyl-L-cysteine (NAC). Shrimp (initial average weight = 0.

Effective repulsive interaction between Janus polymer-grafted nanoparticles adhering to lipid vesicles.

The adhesion of nanoparticles to lipid vesicles causes curvature deformations to the membrane to an extent determined by the competition between the adhesive interaction and the membrane's elasticity. These deformations can extend over length scales larger than the size of a nanoparticle, leading to an effective membrane-curvature-mediated interaction between nanoparticles. Nanoparticles with uniform surfaces tend to aggregate into unidimensionally close-packed clusters at moderate adhesion strengths and endocytose at high adhesion strengths.