Grey matter volume and cortical structure in Prader-Willi syndrome compared to typically developing young adults.

Prader-Willi syndrome (PWS) is a neurodevelopmental disorder of genomic imprinting, presenting with a characteristic overeating disorder, mild to moderate intellectual disability, and a variable range of social and behavioral difficulties. Consequently, widespread alterations in neural structure and developmental and maturational trajectory would be expected. To date, there have been few quantitative and systematic studies of brain morphology in PWS, although alterations of volume and of cortical organisation have been reported.

An experimental and computational study of the inferior vena cava hemodynamics under respiratory-induced collapse of the infrarenal IVC.

Inferior vena cava (IVC) filters have been used for over five decades as an alternative to anticoagulation therapy in the treatment of venous thromboembolic disease. However, complications associated with IVC filters remain common. Though many studies have investigated blood flow in the IVC, the effects of respiration-induced IVC collapse have not been evaluated.

Interprofessional Teamwork Innovation Model (ITIM) to promote communication and patient-centred, coordinated care.

Background: Despite recommendations and the need to accelerate redesign of delivery models to be team-based and patient-centred, professional silos and cultural and structural barriers that inhibit working together and communicating effectively still predominate in the hospital setting. Aiming to improve team-based rounding, we developed, implemented and evaluated the Interprofessional Teamwork Innovation Model (ITIM).

Methods: This quality improvement (QI) study was conducted at an academic medical centre.

Should Structured Exercise Be Promoted As a Model of Care? Dissemination of the Department of Veterans Affairs Gerofit Program.

Exercise provides a wide range of health-promoting benefits, but support is limited for clinical programs that use exercise as a means of health promotion. This stands in contrast to restorative or rehabilitative exercise, which is considered an essential medical service. We propose that there is a place for ongoing, structured wellness and health promotion programs, with exercise as the primary therapeutic focus.

Anxiety sensitivity and rumination: Transdiagnostic factors involved in the relation between subjective social status and anxiety and depressive symptoms and disorders among economically disadvantaged Latinos in primary care.

Latinos face striking physical and mental health disparities. One factor associated with such disparities is subjective social status, reflecting subjective ratings of social standing. Yet there is presently a lack of empirical information about the mechanisms underlying relations between subjective social status and anxiety and depressive symptoms and disorders among Latinos in community medical services that serve as focal catchment areas for assessment and intervention programming.

Mechanistic insights into the genetics of affective psychosis from Prader-Willi syndrome.

Schizophrenia and bipolar disorder are common, severe, and disabling psychotic disorders, which are difficult to research. We argue that the genetically determined neurodevelopmental disorder Prader-Willi syndrome (PWS), which is associated with a high risk of affective psychotic illness, can provide a window into genetic mechanisms and associated neural pathways. People with PWS can all show non-psychotic psychopathology and problem behaviours, but the prevalence of psychotic illness differs markedly by genetic subtype; people with PWS due to chromosome 15 maternal uniparental disomy have higher prevalence of psychotic illness compared with patients with PWS due to 15q11-13 deletions of paternal origin.

Physical Activity Trackers: Promising Tools to Promote Resilience in Older Surgical Patients.

Objectives: Impending surgery presents a high risk for older adults given their vulnerability to adverse outcomes. New approaches to peri-operative care bring together surgeons, geriatricians, and other Multidisciplinary specialties to co-manage the geriatric surgical patient. However, few have incorporated interventions to promote physical activity (PA) throughout this period.

Emotion dysregulation and smoking among treatment-seeking smokers.

Introduction: There has been increased scholarly interest in advancing the study of emotion dysregulation and substance use. However, there is limited study of emotion dysregulation in the context of smoking. The current study examined the emotion dysregulation global construct and sub facets in relation to negative affect reduction expectancies, coping motives, perceived barriers for quitting, and the severity of problems experienced during quit attempts.

Reduced brain glutamine in female varsity rugby athletes after concussion and in non-concussed athletes after a season of play.

The purpose of this study was to use non-invasive proton magnetic resonance spectroscopy (MRS) and diffusion tensor imaging (DTI) to monitor changes in prefrontal white matter metabolite levels and tissue microstructure in female rugby players with and without concussion (ages 18-23, n = 64). Evaluations including clinical tests and 3 T MRI were performed at the beginning of a season (in-season) and followed up at the end of the season (off-season). Concussed athletes were additionally evaluated 24-72 hr (n = 14), three months (n = 11), and six months (n = 8) post-concussion.

Live Continuing Education Program for Adjunct Clinical Nursing Faculty.

Aim: The aim of the study was to evaluate a mentorship program for adjunct clinical faculty.

Background: The nursing faculty shortage has been cited as the primary reason for decreased student enrollments. Clinical adjuncts hired to teach to fill this shortage need a competency-based orientation and formal mentorship.

Cleavage and Structural Transitions during Maturation of Staphylococcus aureus Bacteriophage 80α and SaPI1 Capsids.

In the tailed bacteriophages, DNA is packaged into spherical procapsids, leading to expansion into angular, thin-walled mature capsids. In many cases, this maturation is accompanied by cleavage of the major capsid protein (CP) and other capsid-associated proteins, including the scaffolding protein (SP) that serves as a chaperone for the assembly process. bacteriophage 80α is capable of high frequency mobilization of mobile genetic elements called pathogenicity islands (SaPIs), such as SaPI1.

Upper limb ischaemia: a South African single-centre experience.

Objective: The aims of this study were to report on our experience with upper limb ischaemia (ULI), to define the pattern and distribution of disease, describe key demographic features and report on conventional clinical outcomes.

Methods: This was a single-centre, retrospective, descriptive study. All patients (n = 64) who underwent a surgical intervention for ULI over a 12-year study period were included.

Negative affectivity as a mechanism underlying perceived distress tolerance and cannabis use problems, barriers to cessation, and self-efficacy for quitting among urban cannabis users.

Cannabis use rates continue to rise in the United States and currently cannabis is among the most widely used substances in the world. Cannabis use is associated with several mental health problems, low educational attainment, low income, and underemployment. The current study explored the tendency to experience negative affect (negative affectivity) as a factor accounting for the association between perceived distress tolerance and problems related to the use of cannabis.

Presence of neuroticism and antidepressant remission rates in late-life depression: results from the Neurobiology of Late-Life Depression (NBOLD) study.

ABSTRACTNeuroticism in older adults is common yet understudied, particularly its effects on depression treatment outcomes. We hypothesized that presence of high neuroticism would be associated with lower 12-week remission rates in older depressed sertraline-treated patients. In this longitudinal cohort study, 43 depressed older adults completed the Revised NEO Personality Inventory (NEO PI-R).

A prospective investigation of the synergistic effect of change in anxiety sensitivity and dysphoria on tobacco withdrawal.

Objective: Prevailing theory and research suggests the psychological and physiological discomfort associated with tobacco withdrawal may play a formative role in the risk of cessation failure. Yet, research elucidating cognitive-affective vulnerability characteristics that contribute to increased tobacco withdrawal severity during periods of planned abstinence is highly limited. In the current study, we explored whether smokers with greater reductions of Anxiety Sensitivity (AS) and dysphoria during a smoking cessation intervention would experience less severe postquit tobacco withdrawal.

Climate induced human demographic and cultural change in northern Europe during the mid-Holocene.

The transition from hunter-gatherer-fisher groups to agrarian societies is arguably the most significant change in human prehistory. In the European plain there is evidence for fully developed agrarian societies by 7,500 cal. yr BP, yet a well-established agrarian society does not appear in the north until 6,000 cal.

Anxiety Sensitivity and Nicotine Replacement Therapy Side Effects: Examining the Role of Emotion Dysregulation Among Treatment-Seeking Smokers.

Objective: Nicotine replacement therapy (NRT) significantly increases the likelihood of quit success at least over the short term, yet some smokers prematurely discontinue use. NRT side effects are often cited as the primary reason for medication discontinuation. The current study examined a theoretical pathway by which two smoking-related emotional vulnerabilities (anxiety sensitivity and emotion dysregulation) were related to the number of NRT (nicotine patch) side effects reported 1 week following a scheduled quit attempt.

Multiparametric MRI changes persist beyond recovery in concussed adolescent hockey players.

Objective: To determine whether multiparametric MRI data can provide insight into the acute and long-lasting neuronal sequelae after a concussion in adolescent athletes.

Methods: Players were recruited from Bantam hockey leagues in which body checking is first introduced (male, age 11-14 years). Clinical measures, diffusion metrics, resting-state network and region-to-region functional connectivity patterns, and magnetic resonance spectroscopy absolute metabolite concentrations were analyzed from an independent, age-matched control group of hockey players (n = 26) and longitudinally in concussed athletes within 24 to 72 hours (n = 17) and 3 months (n = 14) after a diagnosed concussion.

An innovative educational clinical experience promoting geriatric exercise.

Formal educational training in physical activity promotion is relatively sparse throughout the medical education system. The authors describe an innovative clinical experience in physical activity directed at medical clinicians on a geriatrics rotation. The experience consists of a single 2 1/2 hour session, in which learners are partnered with geriatric patients engaged in a formal supervised exercise program.

Competing scaffolding proteins determine capsid size during mobilization of pathogenicity islands.

pathogenicity islands (SaPIs), such as SaPI1, exploit specific helper bacteriophages, like 80α, for their high frequency mobilization, a process termed 'molecular piracy'. SaPI1 redirects the helper's assembly pathway to form small capsids that can only accommodate the smaller SaPI1 genome, but not a complete phage genome. SaPI1 encodes two proteins, CpmA and CpmB, that are responsible for this size redirection.

A Qualitative Study of Participation in Cardiac Rehabilitation Programs in an Integrated Health Care System.

Introduction: Despite strong incentives to use cardiac rehabilitation (CR), patient participation is low in the Veterans Health Administration (VHA). This is paradoxical given that VHA is an integrated health care system that offers a range of CR programs which should logically reduce barriers to access to CR participation. The purpose of this study was to better understand the contextual factors that influence patient participation in CR and how patients consider factors together when making decisions about CR participation.

BNA Gapmers Revert Splicing and Reduce RNA Foci with Low Toxicity in Myotonic Dystrophy Cells.

Myotonic dystrophy type 1 (DM1) is a multisystemic disease caused by an expanded CTG repeat in the 3' UTR of the dystrophia myotonica protein kinase (DMPK) gene. Short, DNA-based antisense oligonucleotides termed gapmers are a promising strategy to degrade toxic CUG expanded repeat (CUG) RNA. Nucleoside analogs are incorporated to increase gapmer affinity and stability; however, some analogs also exhibit toxicity.