2,347 research outputs found
Vermont Adolescent Perception of Barriers to Smoking and Cessation
Introduction: Despite a decline in youth smoking rates over the past decade, thirteen percent of Vermont high school students still smoke (Vermont Youth Risk Behavior Survey, YRBS, 2013). Smoking and nicotine exposure at an early age can have detrimental effects on brain development and lead to long term, sustained tobacco use (Arrazola et. al 2015). It was our goal to characterize the barriers to cessation for these adolescents. Some important factors suggested by the literature include living with someone who smokes (50% of VT teen smokers report a parent or guardian who smokes) and having a close friend who smokes (70% of VT teen smokers) (American Lung Association 2015). Nationally, while teen smoking rates continue to decline, the decrease is being offset by a significant increase in electronic vapor products (e-cigs) (12% increase from 2011-2014) (Arrazola et. al 2015). The 2013 Vermont YRBS data may therefore be misleading, and not capture this increase in tobacco and e-cig use. Therefore, we were particularly interested in further characterizing the link, if any, between e-cig use and smoking initiation or successful smoking cessation.https://scholarworks.uvm.edu/comphp_gallery/1222/thumbnail.jp
CRISPR/Cas-based screening of long non-coding RNAs (lncRNAs) in macrophages with an NF-κB reporter.
The innate immune system protects against infections by initiating an inducible inflammatory response. NF-κB is one of the critical transcription factors controlling this complex response, but some aspects of its regulation remain unclear. For example, although long non-coding RNAs (lncRNAs) have been shown to critically regulate gene expression, only a fraction of these have been functionally characterized, and the extent to which lncRNAs control NF-κB expression is unknown. Here, we describe the generation of a GFP-based NF-κB reporter system in immortalized murine bone marrow-derived macrophages (iBMDM). Activation of this reporter, using Toll-like receptor ligands, resulted in GFP expression, which could be monitored by flow cytometry. We also established a CRISPR/Cas9 gene deletion system in this NF-κB reporter line, enabling us to screen for genes that regulate NF-κB signaling. Our deletion-based approach identified two long intergenic non-coding(linc)RNAs, lincRNA-Cox2 and lincRNA-AK170409, that control NF-κB signaling. We demonstrate a potential novel role for lincRNA-Cox2 in promoting IκBα degradation in the cytoplasm. For lincRNA-AK170409, we provide evidence that this nuclearly-localized lincRNA regulates a number of inflammation-related genes. In conclusion, we have established an NF-κB-GFP iBMDM reporter cell line and a line that stably expresses Cas9. Our approach enabled the identification of lincRNA-Cox2 and lincRNA-AK170409 as NF-κB regulators, and this tool will be useful for identifying additional genes involved in regulating this transcription factor critical for immune function
The zebrafish xenograft platform-A novel tool for modeling KSHV-associated diseases
Kaposi\u27s sarcoma associated-herpesvirus (KSHV, also known as human herpesvirus-8) is a gammaherpesvirus that establishes life-long infection in human B lymphocytes. KSHV infection is typically asymptomatic, but immunosuppression can predispose KSHV-infected individuals to primary effusion lymphoma (PEL); a malignancy driven by aberrant proliferation of latently infected B lymphocytes, and supported by pro-inflammatory cytokines and angiogenic factors produced by cells that succumb to lytic viral replication. Here, we report the development of the firs
Commissioning care for people with dementia at the end of life: a mixed methods study.
This is an Open Access article distributed in accordance with the Creative Commons Attribution Non Commercial (CC BY-NC 4.0) license, which permits others to distribute, remix, adapt, build upon this work non-commercially, and license their derivative works on different terms, provided the original work is properly cited and the use is non-commercial. See: http://creativecommons.org/licenses/by-nc/4.0/ The version of record, Zoe M Gotts, Nicole Baur, Emma McLellan, Claire Goodman, Louise Robinson and Richard P Lee, ‘Commissioning care for people with dementia at the end of life: a mixed methods study’, BMJ Open, 2016,; 6: e013554, is available online at doi: 10.1136/ bmjopen-2016-013554Objectives To understand how end of life care for people with dementia is currently commissioned (.e contracted)and organised, with a view to informing the development of commissioning guidance for good quality community-based end of life care in dementia. Design Mixed-methods study; narrative review and qualitative interviews. Setting 8 NHS clinical commissioning groups and 5 Adult Services across England. Methods Narrative review of evidence; 20 semi structured interviews (telephone and face-to-face) with professionals involved in commissioning end of life care for people with dementia. Main outcome measures Summary of the existing evidence base for commissioning, commissioners’ approaches to the commissioning process for end of life care for people with dementia in England. Results In the context of commissioning end of life care for people with dementia, the literature review generated three key themes; (1) importance of joint commissioning; (2) lack of clarity for the process; and (3) factors influencing commissioning. In exploring health professionals’ perceptions of the commissioning process, ‘uncertainty’ was elicited as an overarching theme across the CCGs interviewed. Organisation of the process, lack of expertise, issues surrounding integration and the art of specification were considered important factors that contribute to the uncertainty surrounding the commissioning process. Conclusions The current evidence base for commissioning end of life care is limited with considerable uncertainty as how clinical commissioners in England undertake the process to ensure future services are evidence-based. Strengths and limitations of this study • The use of a multimethod approach (narrative review, qualitative interviews) allowed for triangulation of our findings. • The evidence indentified in the review may be limited given that ‘commissioning’ is a relatively new term in England. • The review presented is a narrative review; the manuscripts were not subject to a quality assessment process. • Generalisability of findings might be affected by the small number of published studies, their heterogeneity in methodologies, and small sample sizes. • The study highlights that information on commissioning specifically for health and social care in England is limited; this is mirrored in commissioners’ accounts.Peer reviewe
Epifluorescence imaging of electrochemically Switchable Langmuir-Blodgett films of Nafion
Reforestation of riparian zones is increasingly practiced in many regions for purposes of biodiversity conservation, bank stabilisation, and improvement in water quality. This is in spite of the actual benefits of reforestation for recovering underlying soil properties and function remaining poorly understood. Here we compare remnant riparian rainforest, pasture and reforestation plantings aged 2-20 years in an Australian subtropical catchment on ferrosols to determine the extent to which reforestation restores key soil properties. Of the nine soil attributes measured (total nitrogen, nitrate and ammonium concentrations, net nitrification and ammonification rates, organic carbon, bulk density, fine root biomass and water infiltration rates), only infiltration rates were significantly lower in pasture than remnant riparian rainforest. Within reforestation plantings, bulk density decreased up to 1.4-fold and infiltration rates increased up to 60-fold with time post-reforestation. Our results suggest that the main outcome of belowground processes of early reforestation is the recovery of the soils' physical structure, with potential beneficial ecosystem services including reduced runoff, erosion and associated sediment and nutrient loads in waterways. We also demonstrate differential impacts of two commonly planted tree species on a subset of soil properties suggesting that preferential planting of select species could accelerate progress on specific restoration objectives
Searching for Inflow Towards Massive Starless Clump Candidates Identified in the Bolocam Galactic Plane Survey
Recent Galactic plane surveys of dust continuum emission at long wavelengths
have identified a population of dense, massive clumps with no evidence for
on-going star formation. These massive starless clump candidates are excellent
sites to search for the initial phases of massive star formation before the
feedback from massive star formation effects the clump. In this study, we
search for the spectroscopic signature of inflowing gas toward starless clumps,
some of which are massive enough to form a massive star. We observed 101
starless clump candidates identified in the Bolocam Galactic Plane Survey
(BGPS) in HCO+ J = 1-0 using the 12m Arizona Radio Observatory telescope. We
find a small blue excess of E = (Nblue - Nred)/Ntotal = 0.03 for the complete
survey. We identified 6 clumps that are good candidates for inflow motion and
used a radiative transfer model to calculate mass inflow rates that range from
500 - 2000 M /Myr. If the observed line profiles are indeed due to large-scale
inflow motions, then these clumps will typically double their mass on a free
fall time. Our survey finds that massive BGPS starless clump candidates with
inflow signatures in HCO+ J = 1-0 are rare throughout our Galaxy.Comment: 14 pages, 9 figure
Development and piloting of a treatment foster care program for older youth with psychiatric problems
BACKGROUND: Older youth in out-of-home care often live in restrictive settings and face psychiatric issues without sufficient family support. This paper reports on the development and piloting of a manualized treatment foster care program designed to step down older youth with high psychiatric needs from residential programs to treatment foster care homes. METHODS: A team of researchers and agency partners set out to develop a treatment foster care model for older youth based on Multi-dimensional Treatment Foster Care (MTFC). After matching youth by mental health condition and determining for whom randomization would be allowed, 14 youth were randomized to treatment as usual or a treatment foster home intervention. Stakeholders were interviewed qualitatively at multiple time points. Quantitative measures assessed mental health symptoms, days in locked facilities, employment and educational outcomes. RESULTS: Development efforts led to substantial variations from the MTFC model and a new model, Treatment Foster Care for Older Youth was piloted. Feasibility monitoring suggested that it was difficult, but possible to recruit and randomize youth from and out of residential homes and that foster parents could be recruited to serve them. Qualitative data pointed to some qualified clinical successes. Stakeholders viewed two team roles – that of psychiatric nurse and skills coaches – very highly. However, results also suggested that foster parents and some staff did not tolerate the intervention well and struggled to address the emotion dysregulation issues of the young people they served. Quantitative data demonstrated that the intervention was not keeping youth out of locked facilities. CONCLUSIONS: The intervention needed further refinement prior to a broader trial. Intervention development work continued until components were developed to help address emotion regulation problems among fostered youth. Psychiatric nurses and skills coaches who work with youth in community settings hold promise as important supports for older youth with psychiatric needs
Three-Dimensional Simulations of Magnetized Superbubbles: New Insights into the Importance of MHD Effects on Observed Quantities
We present three-dimensional magnetohydrodynamic (MHD) simulations of
superbubbles, to study the importance of MHD effects in the interpretation of
images from recent surveys of the Galactic plane. These simulations focus
mainly on atmospheres defined by an exponential density distribution and the
Dickey & Lockman (1990) density distribution. In each case, the magnetic field
is parallel to the Galactic plane and we investigate cases with either infinite
scale height (constant magnetic field) or a constant ratio of gas pressure to
magnetic pressure. The three-dimensional structure of superbubbles in these
simulations is discussed with emphasis on the axial ratio of the cavity as a
function of magnetic field strength and the age of the bubble. We investigate
systematic errors in the age of the bubble and scale height of the surrounding
medium that may be introduced by modeling the data with purely hydrodynamic
models. Age estimates derived with symmetric hydrodynamic models fitted to an
asymmetric magnetized superbubble can differ by up to a factor of four,
depending on the direction of the line of sight. The scale height of the
surrounding medium based on the Kompaneets model may be up to 50% lower than
the actual scale height. We also present the first ever predictions of Faraday
rotation by a magnetized superbubble based on three-dimensional MHD
simulations. We emphasize the importance of MHD effects in the interpretation
of observations of superbubbles.Comment: 21 journal pages. 17 figures. 5 tables (added extensive discussion on
the effect of cooling on the bubbles); Accepted for publications in the
Astrophysical Journal. Related animations can be accessed via
http://www.capca.ucalgary.c
A comparison of race-related pain stereotypes held by White and Black individuals
Pain judgments are the basis for pain management. The purpose of this study was to assess Black and White participants’ race-related pain stereotypes. Undergraduates (n=551) rated the pain sensitivity and willingness to report pain for the typical Black person, White person, and themselves. Participants, regardless of race, rated the typical White person as being more pain sensitive and more willing to report pain than the typical Black person. White participants rated themselves as less sensitive and less willing to report pain than same-race peers; however, Black participants rated themselves as more pain sensitive and more willing to report pain than same-race peers. These findings highlight similarities and differences in racial stereotypic pain beliefs held by Black and White individuals
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