Allostery at opioid receptors: modulation with small molecule ligands

Peer Reviewedhttps://deepblue.lib.umich.edu/bitstream/2027.42/144601/1/bph13823_am.pdfhttps://deepblue.lib.umich.edu/bitstream/2027.42/144601/2/bph13823.pd

Diclidophora merlangi (Kuhn, 1829) Krøyer, 1838 (Monogenea : Diclidophoridae) as an indicator of hydrocarbon pollution in the North Sea

Acknowledgements We thank the crews and scientific staff on the cruises of FRS Scotia during which these samples were collected. We are grateful to Dr Coby Needle of Marine Scotland for his helpful comments on an earlier draft of the manuscript, and to the anonymous reviewer for his constructive comments. We wish to dedicate this study to the memory of Dr H.H. Williams, whose original idea it was to investigate D. merlangi as an indicator of hydrocarbon pollution.Peer reviewedPostprin

A feasibility study of behavioural activation for depressive symptoms in adults with intellectual disabilities

Background: Important work has been carried out adapting cognitive behavioural therapy for people with intellectual disabilities. However, there is a lack of alternative psychological therapies available for people with intellectual disabilities and emotional difficulties. Behavioural activation for depression is less reliant on verbal communication and focuses on increasing purposeful activity and reducing avoidance. Method: This feasibility study involved the development and piloting of an adapted manual of behavioural activation for people with intellectual disabilities. The intervention consisted of 10–12 sessions and a key adaptation was that the therapist worked with the clients alongside a significant other in their life, either a paid carer or family member. Baseline, post-intervention (3 months after entering the study) and 6-month quantitative follow-up data were obtained. Primary outcome data were gathered, concerning depressive symptoms, participants' levels of activity and general well-being. Results: Twenty-three adults with intellectual disabilities with symptoms of depression were recruited from specialist health services. In terms of acceptability, the behavioural activation intervention was well received and only two individuals dropped out, with a further two lost to follow-up. The main measures of depression appeared to be sensitive to change. Pre- to post-intervention data showed a significant reduction in self-report of depressive symptoms with a strong effect size (r = 0.78), that was maintained at follow-up (r = 0.86). Positive change was also obtained for informant reports of depressive symptoms from pre- to post-intervention, with a strong effect size (r = 0.7). Once again, this positive change was maintained at follow-up (r = 0.72). Conclusions: The study suggested that behavioural activation may be a feasible and worthwhile approach to tackling depression in people with intellectual disabilities. However, a randomised controlled trial would be required to establish its effectiveness, with more sensitive measurement of change in activity

Optimization of double pulse pumping for Ni-like Sm x-ray lasers

We report a systematic study of double pulse pumping of the Ni-like Sm x-ray laser at 73 Angstrom, currently the shortest wavelength saturated x-ray laser. It is found that the Sm x-ray laser output can change by orders of magnitude when the intensity ratio of the pumping pulses and their relative delay are varied. Optimum pumping conditions are found and interpreted in terms of a simple model. (C) 1999 American Institute of Physics. [S0021-8979(99)07102-9]

Enhanced inverse bremsstrahlung heating rates in a strong laser field

Test particle studies of electron scattering on ions, in an oscillatory electromagnetic field have shown that standard theoretical assumptions of small angle collisions and phase independent orbits are incorrect for electron trajectories with drift velocities smaller than quiver velocity amplitude. This leads to significant enhancement of the electron energy gain and the inverse bremsstrahlung heating rate in strong laser fields. Nonlinear processes such as Coulomb focusing and correlated collisions of electrons being brought back to the same ion by the oscillatory field are responsible for large angle, head-on scattering processes. The statistical importance of these trajectories has been examined for mono-energetic beam-like, Maxwellian and highly anisotropic electron distribution functions. A new scaling of the inverse bremsstrahlung heating rate with drift velocity and laser intensity is discussed.Comment: 12 pages, 12 figure

Increasing intensities of Anisakis simplex third-stage larvae (L3) in Atlantic salmon of coastal waters of Scotland

Background: Red Vent Syndrome (RVS), a haemorrhagic inflammation of the vent region in Atlantic salmon, is associated with high abundance of Anisakis simplex (s.s.) third-stage larvae (L3) in the vent region. Despite evidence suggesting that increasing A. simplex (s.s.) intensity is a causative factor in RVS aetiology, the definitive cause remains unclear.Methods: A total of 117 Atlantic salmon were sampled from commercial fisheries on the East, West, and North coasts of Scotland and examined for ascaridoid parasites. Genetic identification of a subsample of Anisakis larvae was per-formed using the internal transcribed spacer (ITS) region of ribosomal DNA. To assess the extent of differentiation of feeding grounds and dietary composition, stable isotope analysis of carbon and nitrogen was carried out on Atlantic salmon muscle tissue.Results: In the present study, the obtained ITS rDNA sequences matched A. simplex (s.s.) sequences deposited in GenBank at 99–100%. Not all isolated larvae (n=30,406) were genetically identified. Therefore, the morphotype found in this study is referred to as A. simplex (sensu lato). Anisakis simplex (s.l.) was the most prevalent (100%) nematode with the highest mean intensity (259.9 ±197.3), in comparison to Hysterothylacium aduncum (66.7%, 6.4 ± 10.2) and Pseudoterranova decipiens (s.l.) (14.5%, 1.4 ±0.6). The mean intensity of A. simplex (s.l.) represents a four-fold increase compared to published data (63.6 ±31.9) from salmon captured in Scotland in 2009. Significant positive correlations between A. simplex (s.l.) larvae intensities from the body and the vent suggest that they play a role in the emergence of RVS. The lack of a significant variation in stable isotope ratios of Atlantic salmon indicates that diet or feeding ground are not driving regional differences in A. simplex (s.l.) intensities.Conclusions: This paper presents the most recent survey for ascaridoid parasites of wild Atlantic salmon from three coastal regions in Scotland. A significant rise in A. simplex (s.l.) intensity could potentially increase both natural mortal-ity rates of Atlantic salmon and possible risks for salmon consumers due to the known zoonotic role of A. simplex (s.s.) and A. pegreffii within the A. simplex (s.l.) species complex

‘It's scary starting a new school’: Children and young people's perspectives on wellbeing support during educational transitions

Background Children and young people experience various transitions throughout their education. Theory and evidence highlight that these can be complex, and poor experiences of transitions can be associated with worsened outcomes, necessitating a need to develop and implement wellbeing support. However, children and young people's views are lacking in the literature, and studies tend to focus on specific transitions rather than on what matters for wellbeing during transitions generally. Aims We explore children and young people's own perceptions of what would support wellbeing during educational transitions. Sample We engaged with 49 children and young people aged 6–17 years, using purposeful maximum variation sampling to facilitate engagement of a diverse sample across a variety of education setting types. Methods We undertook focus groups, using creative methods centred around a storybook, asking participants to make decisions as headteachers about wellbeing provision in a fictional setting. Data were analysed using reflexive thematic analysis. Analysis We constructed four themes: (1) helping children and young people understand what to expect; (2) developing and sustaining relationships and support; (3) being responsive to individual needs and vulnerabilities; and (4) managing loss and providing a sense of closure. Conclusions Our analysis highlights a desire among children and young people for a considered, supportive approach that recognizes their individual needs and their connection to educational communities. The study makes a methodological and conceptual contribution, demonstrating the value of adopting a multifocussed lens to researching and supporting transitions

“We want it to be a culture”: children and young people’s perceptions of what underpins and undermines education-based wellbeing provision

Background: Provision that aims to promote the social, emotional, and mental wellbeing of children and young people (including their mental health) is increasingly implemented in education settings. As researchers, policymakers, and practitioners explore the complexities of promotion and prevention provision in practice, it is critical that we include and amplify children and young people’s perspectives. In the current study, we explore children and young people’s perceptions of the values, conditions, and foundations that underpin effective social, emotional, and mental wellbeing provision. Methods: We engaged in remote focus groups with 49 children and young people aged 6–17 years across diverse settings and backgrounds, using a storybook in which participants constructed wellbeing provision for a fictional setting. Analysis: Using reflexive thematic analysis, we constructed six main themes presenting participants’ perceptions: (1) recognising and facilitating the setting as a caring social community; (2) enabling wellbeing to be a central setting priority; (3) facilitating strong relationships with staff who understand and care about wellbeing; (4) engaging children and young people as active partners; (5) adapting to collective and individual needs; and (6) being discreet and sensitive to vulnerability. Conclusions: Our analysis presents a vision from children and young people of an integrated systems approach to wellbeing provision, with a relational, participatory culture in which wellbeing and student needs are prioritised. However, our participants identified a range of tensions that risk undermining efforts to promote wellbeing. Achieving children and young people’s vision for an integrated culture of wellbeing will require critical reflection and change to address the current challenges faced by education settings, systems, and staff