2,882 research outputs found

    Efficacy of cognitive behaviour therapy versus anxiety management for body dysmorphic disorder: a randomised controlled trial

    Get PDF
    Background: The evidence base for the effectiveness of cognitive behaviour therapy (CBT) for treating Body Dysmorphic Disorder (BDD) is weak. Aims: To determine if CBT is more effective than anxiety management (AM) in an out-patient setting. Method: A single blind, stratified parallel-group randomized controlled trial. The primary endpoint was at 12 weeks, and the Yale Brown Obsessive Compulsive Scale for BDD (BDD-YBOCS) was the primary outcome measure. Secondary measures for BDD included the Brown Assessment of Beliefs (BABS), the Appearance Anxiety Inventory (AAI) and the Body Image Quality of Life Inventory (BIQLI). The outcome measures were collected at baseline and week 12. The CBT group, unlike the AM group, had 4 further weekly sessions that were analysed for their added value. Both groups then completed measures at their 1-month follow-up. Forty-six participants, with DSM-IV diagnosis of BDD including those with a delusional BDD were randomly allocated to either CBT or AM. Results: At 12 weeks, CBT was found to be significantly superior to AM on the BDD-YBOCS ( = -7.19, S.E. () = 2.61, p < .01, C.I. = -12.31, -2.07, d 0.99) as well as the secondary outcome measures of the BABS, AAI and BIQL. Further benefits occurred by Week 16 within the CBT group. There were no differences in outcome for those with delusional BDD or depression. Conclusions: CBT is an effective intervention for people with BDD even with delusional beliefs or depression and is more effective than anxiety management over 12 weeks

    Heterologous prime-boost-boost immunisation of Chinese cynomolgus macaques using DNA and recombinant poxvirus vectors expressing HIV-1 virus-like particles

    Get PDF
    Background: There is renewed interest in the development of poxvirus vector-based HIV vaccines due to the protective effect observed with repeated recombinant canarypox priming with gp120 boosting in the recent Thai placebo-controlled trial. This study sought to investigate whether a heterologous prime-boost-boost vaccine regimen in Chinese cynomolgus macaques with a DNA vaccine and recombinant poxviral vectors expressing HIV virus-like particles bearing envelopes derived from the most prevalent clades circulating in sub-Saharan Africa, focused the antibody response to shared neutralising epitopes. Methods: Three Chinese cynomolgus macaques were immunised via intramuscular injections using a regimen composed of a prime with two DNA vaccines expressing clade A Env/clade B Gag followed by boosting with recombinant fowlpox virus expressing HIV-1 clade D Gag, Env and cholera toxin B subunit followed by the final boost with recombinant modified vaccinia virus Ankara expressing HIV-1 clade C Env, Gag and human complement protein C3d. We measured the macaque serum antibody responses by ELISA, enumerated T cell responses by IFN-gamma ELISpot and assessed seroneutralisation of HIV-1 using the TZM-bl beta-galactosidase assay with primary isolates of HIV-1. Results: This study shows that large and complex synthetic DNA sequences can be successfully cloned in a single step into two poxvirus vectors: MVA and FPV and the recombinant poxviruses could be grown to high titres. The vaccine candidates showed appropriate expression of recombinant proteins with the formation of authentic HIV virus-like particles seen on transmission electron microscopy. In addition the b12 epitope was shown to be held in common by the vaccine candidates using confocal immunofluorescent microscopy. The vaccine candidates were safely administered to Chinese cynomolgus macaques which elicited modest T cell responses at the end of the study but only one out of the three macaques elicited an HIV-specific antibody response. However, the antibodies did not neutralise primary isolates of HIV-1 or the V3-sensitive isolate SF162 using the TZM-bl b-galactosidase assay. Conclusions: MVA and FP9 are ideal replication-deficient viral vectors for HIV-1 vaccines due to their excellent safety profile for use in humans. This study shows this novel prime-boost-boost regimen was poorly immunogenic in Chinese cynomolgus macaques

    Evolution of the Differential Transverse Momentum Correlation Function with Centrality in Au + Au Collisions at āˆšsNN = 200 GeV

    Get PDF
    We present first measurements of the evolution of the differential transverse momentum correlation function, C, with collision centrality in Au + Au interactions at āˆšsNN = 200 GeV. This observable exhibits a strong dependence on collision centrality that is qualitatively similar to that of number correlations previously reported. We use the observed longitudinal broadening of the near-side peak of C with increasing centrality to estimate the ratio of the shear viscosity to entropy density, Ī· / s , of the matter formed in central Au + Au interactions. We obtain an upper limit estimate of Ī· / s that suggests that the produced medium has a small viscosity per unit entropy

    Measurement of the Parity-Violating Longitudinal Single-Spin Asymmetry for WĀ± Boson Production in Polarized Proton-Proton Collisions at āˆšs=500 GeV

    Get PDF
    We report the first measurement of the parity-violating single-spin asymmetries for midrapidity decay positrons and electrons from W+ and W- boson production in longitudinally polarized proton-proton collisions at āˆšs = 500 GeV by the STAR experiment at RHIC. The measured asymmetries, A(L)(W+) = -0.27Ā± 0.10(stat.) Ā± 0.02(syst.) Ā± 0.03(norm.) and A(L)(W-) = 0.14 Ā± 0.19(stat.) Ā± 0.02(syst.) Ā± 0.01(norm.), are consistent with theory predictions, which are large and of opposite sign. These predictions are based on polarized quark and antiquark distribution functions constrained by polarized deep-inelastic scattering measurements

    System Size and Energy Dependence of Near-Side Dihadron Correlations

    Get PDF
    Two-particle azimuthal (Ī”Ļ†) and pseudorapidity (Ī”Ī·) correlations using a trigger particle with large transverse momentum (PT)in d+Au, Cu+Cu, and Au+Au collisions at āˆš sNN = 62.4 GeV and 200 GeV from the STAR experiment at the Relativistic Heavy Ion Collider are presented. The near-side correlation is separated into a jet-like component, narrow in both Ī”Ļ† and Ī”Ī·, and the ridge, narrow in Ī”Ļ† but broad in Ī”Ī·. Both components are studied as a function of collision centrality, and the jet-like correlation is studied as a function of the trigger and associated PT. The behavior of the jet-like component is remarkably consistent for different collision systems, suggesting it is produced by fragmentation. The width of the jet-like correlation is found to increase with the system size. The ridge, previously observed in Au+Au collisions at āˆš sNN = 200 GeV, is also found in Cu+Cu collisions and in collisions at āˆš sNN = 62.4 GeV, but is found to be substantially smaller at āˆš sNN = 62.4 GeV than at āˆš sNN = 200 GeV for the same average number of participants (Npart ). Measurements of the ridge are compared to models

    Ļ0 Photoproduction in AuAu Collisions at āˆš sNN = 62.4 GeV Measured With the STAR Detector

    Get PDF
    Vector mesons may be photoproduced in relativistic heavy-ion collisions when a virtual photon emitted by one nucleus scatters from the other nucleus, emerging as a vector meson. The STAR Collaboration has previously presented measurements of coherent Ļ0 photoproduction at center of mass energies of 130 GeV and 200 GeV in AuAu collisions. Here, we present a measurement of the cross section at 62.4 GeV; we find that the cross section for coherent Ļ0 photoproduction with nuclear breakup is 10.5 Ā± 1.5 Ā± 1.6mb at 62.4 GeV. The cross-section ratio between 200 GeV and 62.4 GeV is 4.4 Ā± 0.6, less than is predicted by most theoretical models. It is, however, proportionally much larger than the previously observed 15% Ā± 55% increase between 130 GeV and 200 GeV

    Let's Agree to Disagree: Learning Highly Debatable Multirater Labelling

    Get PDF
    Classification and differentiation of small pathological objects may greatly vary among human raters due to differences in training, expertise and their consistency over time. In a radiological setting, objects commonly have high within-class appearance variability whilst sharing certain characteristics across different classes, making their distinction even more difficult. As an example, markers of cerebral small vessel disease, such as enlarged perivascular spaces (EPVS) and lacunes, can be very varied in their appearance while exhibiting high inter-class similarity, making this task highly challenging for human raters. In this work, we investigate joint models of individual rater behaviour and multi-rater consensus in a deep learning setting, and apply it to a brain lesion object-detection task. Results show that jointly modelling both individual and consensus estimates leads to significant improvements in performance when compared to directly predicting consensus labels, while also allowing the characterization of human-rater consistency

    Indirect inguinal hernia masquerading as a Spigelian hernia

    Get PDF
    Inguinal hernia usually developed and descended into scrotum. The clinical presentation is inguinal or inguino-scrotal swelling. Abdominal wall weakness as it is frequently seen in African tropical zones produces often rare clinical case. We report a case of inguinal hernia presented as an abdominal wall swelling clinically suggestive of a Spigelian hernia and discuss the mechanism

    J/Ń° polarization in p+p collisions at āˆšs = 200 GeV in STAR

    Get PDF
    We report on a polarization measurement of inclusive J/Ń° mesons in the di-electron decay channel at mid-rapidity at 2 \u3c pT \u3c 6 GeV/c in p + p collisions at āˆšs = 200 GeV. Data were taken with the STAR detector at RHIC. The J/Ń° polarization measurement should help to distinguish between different models of the J/Ń° production mechanism since they predict different pT dependences of the J/Ń° polarization. In this analysis, J/Ń° is studied in the helicity frame. The polarization parameter Ī»Īø measured at RHIC becomes smaller towards high pT, indicating more longitudinal J/Ń° polarization as pT increases. The result is compared with predictions of presently available models
    • ā€¦
    corecore