147 research outputs found
Qualitative Exploration of the Daily Experiences and Challenges Faced by Parents and Caregivers of Children with Tourette's Syndrome.
This document is the Accepted Manuscript version of the following article: Amanda K. Ludlow, Rachel Brown, and Joerg Schulz, âA qualitative exploration of the daily experiences and challenges faced by parents and caregivers of children with Touretteâs syndromeâ. The final, definitive version of this paper has been published in Journal of Health Psychology, September 2016, published by SAGE Publishing, All rights reserved. Copyright © 2016, © SAGE PublicationsFew studies address the daily challenges faced by parents of children diagnosed with Touretteâs syndrome. This article reports on a qualitative interview study with 15 parents exploring their experiences, the challenges they face and the support mechanisms they have found to be most helpful. Thematic analysis identified four core categories which represented shared experiences of the participants: coping with childrenâs challenging behaviours, misconceptions and lack of understanding of professionals and the lay public, negative experiences of their childrenâs education and lack of support and services for families with Touretteâs syndrome. The findings highlight the challenges of parenting a child with Touretteâs syndrome, particularly with respect to family life and the childâs schooling.Peer reviewedFinal Accepted Versio
A prospective study exploring the construct and predictive validity of the COM-B model for physical activity
The final, definitive version of this paper has been published in Journal of Health Psychology, November 2017, doi: https://doi.org/10.1177/1359105317739098, published by SAGE Publishing, All rights reserved.This study examined the constructs of Capability, Opportunity, and Motivation from the COM-B model and their influence on moderate-to-vigorous physical activity (MVPA). Using a prospective survey design, 186 healthy adults completed measures representing the Theoretical Domains Framework mapped to the COM-B, and MVPA one week later. The main indicators for the COM constructs were âhabitsâ (Capability), âsubjective normsâ (Opportunity), and âexercise self-identityâ (Motivation). Motivation (77%) and MVPA (50%) were strongly predicted, with Capability and Motivation as key drivers of behaviour. Motivation was a strong mediator for Capability on behaviour. Future research should consider this approach for other populations and behaviours.Peer reviewe
Chemoresistance of glioblastoma cancer stem cells - much more complex than expected
Glioblastomas (GBM) are a paradigm for the investigation of cancer stem cells (CSC) in solid malignancies. The susceptibility of GBM CSC to standard chemotherapeutic drugs is controversial as the existing literature presents conflicting experimental data. Here, we summarize the experimental evidence on the resistance of GBM CSC to alkylating chemotherapeutic agents, with a special focus on temozolomide (TMZ). The data suggests that CSC are neither resistant nor susceptible to chemotherapy per se. Detoxifying proteins such as O6-methylguanine-DNA-methyltransferase (MGMT) confer a strong intrinsic resistance to CSC in all studies. Extrinsic factors may also contribute to the resistance of CSC to TMZ. These may include TMZ concentrations in the brain parenchyma, TMZ dosing schemes, hypoxic microenvironments, niche factors, and the re-acquisition of stem cell properties by non-stem cells. Thus, the interaction of CSC and chemotherapy is more complex than may be expected and it is necessary to consider these factors in order to overcome chemoresistance in the patient
Evaluation of the CHUMS Child Bereavement Group : A Pilot Study Examining Statistical and Clinical Change
This is an Accepted Manuscript of an article published by Taylor & Francis in Death Studies on 7 February 2015, available online at: http://dx.doi.org/10.1080/07481187.2014.913085.This article describes the largest evaluation of a UK child bereavement service to date. Change was assessed using conventional statistical tests as well as clinical significance methodology. Consistent with the fact that the intervention was offered on a universal, preventative basis, bereaved young people experienced a statistically significant, small to medium-sized decrease in symptoms over time. This change was equivalent across child age and gender. Type of bereavement had a slight impact on change when rated by parents. Potential clinical implications are highlighted, and various limitations are discussed that we hope to address using an experimental design in future researchPeer reviewedFinal Accepted Versio
Determinants of weekly sitting time: Construct validation of an initial COM-B model and comparison of its predictive validity with the Theory of Planned Behaviour
© 2020 Taylor & Francis. This is an Accepted Manuscript of an article published by Taylor & Francis in Psychology & Health on 14 May 2020, available online: https://doi.org/10.1080/08870446.2020.1763994.Objective: In relation to sitting behaviour, to investigate which theoretical domains best formed the Capability, Opportunity, and Motivation constructs of the COM-B, and compare the predictive validity to the Theory of Planned Behaviour (TPB), taking habit strength into consideration. Design: Using a prospective design, 186 adults completed measures capturing domains from the Theoretical Domains Framework for the three COM-B constructs, and habit strength, which were examined using a formative measurement model. Predictive validity was then compared to the TPB.Main Outcome Measures: Self-reported sitting behaviour. Results: Self-monitoring (behavioural regulation domain) formed Capability; subjective norm (social influences domain) formed Opportunity; intention (intentions domain), positive affect (emotion domain), and perceived behavioural control (beliefs about capabilities domain), formed Motivation. The COM-B strongly predicted sitting behaviour (27% variance explained), with Capability, Opportunity, and habit strength as key drivers. The TPB explained a large amount of variance (23%) in sitting behaviour, with intention and habit strength as key drivers. Conclusions: The behavioural regulation domain of Capability, the social influences domain of Opportunity, and habit strength were important drivers of sitting behaviour, with comparable variance predicted in the COM-B and TPB. Future research should consider this approach to conceptualise the COM-B for specific populations and behaviours.Peer reviewe
Ionization wave propagation on a micro cavity plasma array
Microcavity plasma arrays of inverse pyramidal cavities have been fabricated
in p-Si wafers. Each cavity acts as a microscopic dielectric barrier discharge.
Operated at atmospheric pressure in argon and excited with high voltage at
about 10 kHz, each cavity develops a localized microplasma. Experiments have
shown a strong interaction of individual cavities, leading to the propagation
of wave-like optical emission structures along the surface of the array. This
phenomenon is numerically investigated using computer simulation. The observed
ionization wave propagates with a speed of about 5 km/s, which agrees well the
experimental findings. It is found that the wave propagation is due to
sequential contributions of a drift of electrons followed by drift of ions
between cavities seeded by photoemission of electrons by the plasma in adjacent
cavities
An exemplary life? A personal construct analysis of the autobiography of Rudolf Hoess, Commandant of Auschwitz
This is an Accepted Manuscript of an article published by Taylor & Francis Group in Journal of Constructivist Psychology on 27 August 2014, available online at: https://www.tandfonline.com/doi/abs/10.1080/10720537.2013.849214This article analyses the autobiography of Rudolf Hoess, commandant of Auschwitz. Textual grid, ABC and self-characterisation analyses of the autobiography are used to construe Hoessâs writing. The textual grid analysis suggests that Hoess saw his adult self as being different from others but his young self as similar to Jews. Conflicts in self-construing are identified. The ABC analysis indicates that, from his perspective, it made sense for Hoess to choose not to leave the concentration camp service. The self-characterisation analysis focuses on whether Hoess experienced Kellyan guilt and it suggests that he did, but in unexpected contexts.Peer reviewedFinal Accepted Versio
Deltoid muscular flap transfer for the treatment of irreparable rotator cuff tears
The purpose of this study was to evaluate the outcome of deltoid muscle flap transfer for the treatment of irreparable rotator cuff tears. In a retrospective study 20 consecutive patients were evaluated. The index procedure took place between 2000 and 2003. Fifteen patients were male, mean age was 62 years. Inclusion criterion was a rotator cuff defect Bateman grade IV. Exclusion criteria were smaller defects, shoulder instability and fractures of the injured shoulder. An open reconstruction with acromioplasty and a pedicled delta flap was performed. Follow up period was mean 42 months. Follow-up included clinical examination, Magnetic Resonance Imaging (MRI) and the Constant and Simple (CS) shoulder tests. According to the Constant shoulder test the results were good in 13 patients, fair in 5 and unsatisfactory in 2. The pre-operative Constant Score improved from mean 25.7 points (±5.3) to 72.3 (±7.8) at follow-up. The mean values for the subcategories of CS increased significantly from 3.9 to 14.4 points for pain and from 4.2 to 15.9 points for activities daily routine (p<0.05). The change in range of motion and strength were not significant (p>0.05). Results of the Simple Shoulder Test showed a significant increase of the mean values from pre-operative 4.3 to 14.7 points post-operatively. MRI showed a subacromial covering of the defect in all cases, all flaps where intact on MRI but always the flap showed marked fatty degeneration. In conclusion, the delta flap is a simple method for the repair of large defects of the rotator cuff leading to satisfying medium results
Irreversible inhibitors of the 3C protease of Coxsackie virus through templated assembly of protein-binding fragments
Small-molecule fragments binding to biomacromolecules can be starting points
for the development of drugs, but are often difficult to detect due to low
affinities. Here we present a strategy that identifies protein-binding
fragments through their potential to induce the target-guided formation of
covalently bound, irreversible enzyme inhibitors. A protein-binding
nucleophile reacts reversibly with a bis-electrophilic warhead, thereby
positioning the second electrophile in close proximity of the active site of a
viral protease, resulting in the covalent de-activation of the enzyme. The
concept is implemented for Coxsackie virus B3 3C protease, a pharmacological
target against enteroviral infections. Using an aldehyde-epoxide as bis-
electrophile, active fragment combinations are validated through measuring the
protein inactivation rate and by detecting covalent protein modification in
mass spectrometry. The structure of one enzymeâinhibitor complex is determined
by X-ray crystallography. The presented warhead activation assay provides
potent non-peptidic, broad-spectrum inhibitors of enteroviral proteases
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