Exploring Virtual Reality as a Tool for Enhancing Teaching and Learning Anatomy to Medical Students: A Feasibility and Acceptability Study.

Background: Virtual reality (VR) provides an immersive, interactive 3D learning environment with increasing use in medical education. It benefits surgical training and, increasingly more so in anatomy education, particularly where access to human body dissection is limited. Although VR can enhance engagement and knowledge retention, concerns remain regarding usability, feasibility and cybersickness.

Exploring Calcium Channels as Potential Therapeutic Targets in Blast Traumatic Brain Injury.

: Repeat low-level blast exposure has emerged as a significant concern for military populations exposed to explosive events. Blast-Related Traumatic Brain Injury (bTBI) is a unique form of brain trauma with poorly understood molecular mechanisms. Loss of calcium homeostasis has emerged as a mediator of early neuronal dysfunction after blast injury.

Development and validation of the Transgender Adolescent Stress Survey-Minority Stress (TASS-MS).

Objective: This study aimed to create and validate a novel measure of gender-related minority stress in transgender and non-binary adolescents (TNBA). TNBA face higher risks of varied behavioral health concerns compared to their cisgender peers, a disparity often attributed to the presence of minority stress due to discrimination. To date, no comprehensive measures of gender-related minority stress exist for use with TNBA.

Development and validation of the Transgender Adolescent Stress Survey-Dysphoria.

Objective: Transgender and nonbinary adolescents (TNBA) may experience gender dysphoria arising from incongruities between their body and their gender. Prior dysphoria measures have largely focused on clinical diagnosis with little regard to comparability of forms for people assigned male or female at birth, overall psychometric performance, or applicability to nonbinary populations. This study develops and validates the Transgender Adolescent Stress Survey-Dysphoria (TASS-D), intended to address these gaps.

Anatomical Diversity of the Adult Corticospinal Tract Revealed by Single-Cell Transcriptional Profiling.

The corticospinal tract (CST) forms a central part of the voluntary motor apparatus in all mammals. Thus, injury, disease, and subsequent degeneration within this pathway result in chronic irreversible functional deficits. Current strategies to repair the damaged CST are suboptimal in part because of underexplored molecular heterogeneity within the adult tract.

Electroencephalography Quality and Application Times in a Pediatric Emergency Department Setting: A Feasibility Study.

Background: Status epilepticus is the most common neurological emergency presenting to pediatric emergency departments. Nonconvulsive status epilepticus can be extremely challenging to diagnose, however, requiring electroencephalographic (EEG) confirmation for definitive diagnosis. We aimed to determine the feasibility of achieving a good-quality pediatric EEG recording within 20 minutes of presentation to the emergency department.

Changes in Immune Function during Initial Military Training.

Purpose: Initial military training (IMT) is a transitionary period wherein immune function may be suppressed and infection risk heightened due to physical and psychological stress, communal living, and sleep deprivation. This study characterized changes in biomarkers of innate and adaptive immune function, and potential modulators of those changes, in military recruits during IMT.

Methods: Peripheral leukocyte distribution and mitogen-stimulated cytokine profiles were measured in fasted blood samples, Epstein-Barr (EBV), varicella zoster (VZV), and herpes simplex 1 (HSV1) DNA was measured in saliva by quantitative polymerase chain reaction as an indicator of latent herpesvirus reactivation, and diet quality was determined using the healthy eating index measured by food frequency questionnaire in 61 US Army recruits (97% male) at the beginning (PRE) and end (POST) of 22-wk IMT.

Effects of SARS-CoV-2 Infection on Attention, Memory, and Sensorimotor Performance.

Background: Recovery after SARS-CoV-2 infection is extremely variable, with some individuals recovering quickly, and others experiencing persistent long-term symptoms or developing new symptoms after the acute phase of infection, including fatigue, poor concentration, impaired attention, or memory deficits. Many existing studies reporting cognitive deficits associated with SARS-CoV-2 infection are limited by the exclusive use of self-reported measures or a lack of adequate comparison groups.

Methods: Forty-five participants, ages 18-70, (11 Long-COVID, 14 COVID, and 20 No-COVID) underwent behavioral testing with the NIH Toolbox Neuro-Quality of Life survey and selected psychometric tests, including a flanker interference task and the d2 Test of Attention.

Explaining behavioral health differences in urban and rural sexual minority adolescents: A longitudinal investigation of minority stress in a diverse national sample of sexual minority adolescents: A longitudinal investigation of minority stress in a diverse national sample of sexual minority adolescents.

Purpose: Experiences of sexuality-based discrimination (ie, minority stressors) against youth who identify as nonheterosexual (ie, sexual minority) have been associated with increased symptoms of anxiety, depression, and post-traumatic stress disorder (PTSD) for sexual minority adolescents (SMA; ages 14-17). However, little is known about the experiences of SMA living in rural communities across the United States. Thus, the present study sought to examine differences in mental health patterns between urban and rural dwelling SMA, and to see whether these differences are, at least in part, explained by experiences of lifetime minority stress.

Initial military training modulates serum fatty acid and amino acid metabolites.

Initial military training (IMT) results in increased fat-free mass (FFM) and decreased fat mass (FM). The underlying metabolic adaptations facilitating changes in body composition during IMT are unknown. The objective of this study was to assess changes in body composition and the serum metabolome during 22-week US Army IMT.

Refusal Rates to Sexual Orientation and Gender Identity Items in the Behavioral Risk Factor Surveillance System, 2014-2019.

To explore trends in sexual orientation and gender identity (SOGI) item refusal in the Behavioral Risk Factor Surveillance System (BRFSS). We used annual data from 7 US states that implemented the SOGI module of the BRFSS from 2014 to 2019 to examine prevalence of sexual orientation (n = 373 332) and gender identity (n = 373 336) item refusal. Analyses included the weighted Wald χ test of association between refusal and year and logistic regressions predicting refusal by year.

Quality improvement project to decrease unnecessary investigations in infants with bronchiolitis in Cork University Hospital.

Background: Bronchiolitis is a common reason for infants to present to the emergency department (ED). Clear evidence-based guidelines exist that recommend against routine radiological and laboratory investigations in this cohort. Despite this, preintervention audit showed that children below 12 months of age with bronchiolitis in the ED during November 2018-January 2019 were receiving unnecessary investigations.

COVID-19-Related Household Job Loss and Mental Health in a Nationwide United States Sample of Sexual Minority Adolescents.

Household job loss during COVID-19 constitutes a public health crisis. Research suggests associations between household job loss, harsher parenting practices, and mental health challenges in the general population. Sexual minority adolescents (SMA) face high rates of family stress and rejection, but evidence linking household job loss to SMA mental health is lacking.

Development of a reference standard for the detection and quantification of Mycobacterium avium subsp. paratuberculosis by quantitative PCR.

Quantitative PCR (qPCR) has become a frequently employed direct method for the detection and quantification of Mycobacterium avium subsp. paratuberculosis (MAP). The quantity of MAP determined by qPCR, however, may be affected by the type of qPCR quantification standard used (PCR product, plasmid, genomic DNA) and the way in which standard DNA quantity is determined (absorbance, fluorescence).

"Trying My Best": Sexual Minority Adolescents' Self-Care During the COVID-19 Pandemic.

Purpose: The COVID-19 pandemic has resulted in major life disruptions for sexual minority adolescents (SMAs), who already face and cope with pervasive and disproportionate rates of social, behavioral, and mental health challenges. Current research suggests that SMAs are struggling with COVID-19-related shelter in place orders navigating family proximity and dynamics and experiencing isolation from SMA-specific supports. Given identified challenges that may exacerbate known mental health disparities in SMAs, this work explores self-care practices among SMAs during the COVID-19 pandemic.

Paediatric attendances of the emergency department in a major Irish tertiary referral centre before and after expansion of free GP care to children under 6: a retrospective observational study.

Objectives: To examine the characteristics of paediatric attendances to the emergency department (ED) in Cork University Hospital (CUH) before and after the expansion of free general practitioner (GP) care to children under the age of 6 years.

Design: This is a retrospective observational study that used a large administrative dataset.

Setting: The study was conducted in major Irish tertiary referral centre that serves a total population of over 1.

Estimation of the sensitivity and specificity of four serum ELISA and one fecal PCR for diagnosis of paratuberculosis in adult dairy cattle in New Zealand using Bayesian latent class analysis.

In New Zealand, a new diagnostic approach for the control of paratuberculosis in mixed aged milking cows has been developed using a combination of ELISA and quantitative fecal PCR (f-qPCR). Our analysis was designed to evaluate performance of these individual tests in infected or infectious mixed aged cows across the prevalence of infection typically encountered on NZ dairy farms and calculate test accuracy when used as a screening test of serological ELISAs for four separate antigens read in parallel followed by a confirmatory quantitative f-qPCR test. Data from a cross-sectional study of 20 moderate prevalence herds was combined with existing data from 2 low and 20 high prevalence herds forming a dataset of 3845 paired serum and fecal samples.

Bioluminescent flashes drive nighttime schooling behavior and synchronized swimming dynamics in flashlight fish.

Schooling fishes, like flocking birds and swarming insects, display remarkable behavioral coordination. While over 25% of fish species exhibit schooling behavior, nighttime schooling has rarely been observed or reported. This is due to vision being the primary modality for schooling, which is corroborated by the fact that most fish schools disperse at critically low light levels.

Control of Mycobacterium avium subsp. paratuberculosis infection on a New Zealand pastoral dairy farm.

Background: Johne's disease is a major production limiting disease of dairy cows caused by infection with Mycobacterium avium subsp. paratuberculosis in calf-hood. The disease is chronic, progressive, contagious and widespread with no treatment and no cure.

The effect of sub-clinical infection with Mycobacterium avium subsp. paratuberculosis on milk production in a New Zealand dairy herd.

Background: Johne's disease is a major production limiting disease of dairy cows. The disease is chronic, progressive, contagious and widespread; there is no treatment and there is no cure. Economic losses arise from decreased productivity through reduced growth, milk yield and fertility and capital losses due to premature culling or death.

Prevalence of Shiga toxin-producing and enteropathogenic Escherichia coli marker genes in diarrhoeic stools in a New Zealand catchment area.

Background: Shiga toxin-producing (STEC) and enteropathogenic (EPEC) Escherichia coli are gastrointestinal pathogens causing diarrhoeal and extraintestinal disease. Due to lack of EPEC screening and use of Sorbitol-MacConkey (SMAC) agar in faecal screening, the true prevalence of EPEC and non-O157 STEC in New Zealand diarrhoeal cases is unknown.

Methods: Diarrhoeic stools sourced from Dunedin hospital were pre-enriched, DNA extracted with Chelex-100 resin and screened using a multiplex TaqMan quantitative PCR assay amplifying stx1, sxt2 and EPEC (eae) gene markers.