The affordability and obtainability of gluten-free foods for adults with coeliac disease following their withdrawal on prescription in England: a qualitative study

Background Changes to prescribing policies in England have restricted or stopped access to gluten-free food on prescription for people with coeliac disease in some geographical areas. The present study aimed to explore the impact of these changes on the affordability and obtainability of gluten-free foods for adults with coeliac disease. Methods Semi-structured qualitative interviews (n = 24) were conducted with people with coeliac disease living in areas where prescriptions for gluten-free foods were no longer available, were restricted or followed national guidelines. Interviews explored the impact of gluten-free prescribing changes on the affordability and obtainability of gluten-free food, as well as dietary adherence. Results All participants considered gluten-free substitute foods to be expensive. Participants felt the availability of gluten-free foods has improved over time, also acknowledging some challenges remain, such as limited local availability. For most, the withdrawal of prescriptions had minimal impact requiring small adjustments such as reducing the quantity of foods obtained. However, greater challenges were faced by those less mobile, permanently sick or disabled and/or on lower incomes. Conclusions The majority of participants affected by the withdrawal of prescriptions were able to adapt to cope with these changes. However, participants with mobility issues, who are permanently sick or disabled and/or on lower incomes were struggling to afford and obtain gluten-free substitute foods from elsewhere. The withdrawal of prescriptions may further widen health inequalities. Further research should focus on the long-term impacts of prescription withdrawal for the vulnerable groups identified

Modelling Oscillator synchronisation during vertebrate axis segmentation

he somitogenesis clock regulates the periodicity with which somites form in the posterior pre-somitic mesoderm. Whilst cell heterogeneity results in noisy oscillation rates amongst constituent cells, synchrony within the population is maintained as oscillators are entrained via juxtracine signalling mechanisms. Here we consider a population of phase-coupled oscillators and investigate how biologically motivated perturbations to the entrained state can perturb synchrony within the population. We find that the ratio of mitosis length to clock period can influence levels of desynchronisation. Moreover, we observe that random cell movement, and hence change of local neighbourhoods, increases synchronisation

Cyanobacteria and microalgae in supporting human habitation on Mars

Establishing the first human presence on Mars will be the most technically challenging undertaking yet in the exploration beyond our planet. The remoteness of Mars from Earth, the inhospitable surface conditions including low atmospheric pressure and cold temperatures, and the need for basic resources including water, pose a formidable challenge to this endeavour. The intersection of multiple disciplines will be required to provide solutions for temporary and eventually permanent Martian habitation. This review considers the role cyanobacteria and eukaryotic microalgae (collectively referred to here as ‘microalgae’) may have in supporting missions to the red planet. The current research using these microorganisms in biological life support systems is discussed, with a systematic analysis of their usage in each system conducted. The potential of microalgae to provide astronauts with oxygen, food, bio-polymers and pharmaceuticals is considered. An overview of microalgal experiments in space missions across the last 60 years is presented, and the research exploring the technical challenges of cultivation on Mars is discussed. From these findings, an argument for culturing microalgae in subterranean bioreactors is proposed. Finally, future synthetic biology approaches for enhancing the cyanobacterial/microalgal role in supporting human deep-space exploration are presented. We show that microalgae hold significant promise for providing solutions to many problems faced by the first Martian settlers, however these can only be realised with significant infrastructure and a reliable power source

The self-assembly and evolution of homomeric protein complexes

We introduce a simple "patchy particle" model to study the thermodynamics and dynamics of self-assembly of homomeric protein complexes. Our calculations allow us to rationalize recent results for dihedral complexes. Namely, why evolution of such complexes naturally takes the system into a region of interaction space where (i) the evolutionarily newer interactions are weaker, (ii) subcomplexes involving the stronger interactions are observed to be thermodynamically stable on destabilization of the protein-protein interactions and (iii) the self-assembly dynamics are hierarchical with these same subcomplexes acting as kinetic intermediates.Comment: 4 pages, 4 figure

Spotlight on Local and Refugee-Led Efforts to Address Key Protection Needs: Lessons Learned in Three Key Regions

In 2022, the International Refugee Assistance Project (IRAP) undertook a geographic rapid assessment project to better understand the unmet legal needs and protection gaps faced by displaced people in three regions of the world: Africa, Latin America and the Caribbean, and South and Southeast Asia.This report synthesizes insights and recommendations gathered from interviews with refugee-led initiatives (RLI) and local organizations serving populations facing acute systemic legal rights violations, shares key trends impacting displaced populations in the three regions, and identifies opportunities for more productive and inclusive philanthropic engagement and international cooperation with historically excluded RLIs

Astrobites as a Community-led Model for Education, Science Communication, and Accessibility in Astrophysics

Support for early career astronomers who are just beginning to explore astronomy research is imperative to increase retention of diverse practitioners in the field. Since 2010, Astrobites has played an instrumental role in engaging members of the community -- particularly undergraduate and graduate students -- in research. In this white paper, the Astrobites collaboration outlines our multi-faceted online education platform that both eases the transition into astronomy research and promotes inclusive professional development opportunities. We additionally offer recommendations for how the astronomy community can reduce barriers to entry to astronomy research in the coming decade

Effect of d-cycloserine on fear extinction training in adults with social anxiety disorder

© 2019 Hofmann et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. Preclinical and clinical data have shown that D-cycloserine (DCS), a partial agonist at the N-methyl-d-aspartate receptor complex, augments the retention of fear extinction in animals and the therapeutic learning from exposure therapy in humans. However, studies with nonclinical human samples in de novo fear conditioning paradigms have demonstrated minimal to no benefit of DCS. The aim of this study was to evaluate the effects of DCS on the retention of extinction learning following de novo fear conditioning in a clinical sample. Eighty-one patients with social anxiety disorder were recruited and underwent a previously validated de novo fear conditioning and extinction paradigm over the course of three days. Of those, only 43 (53%) provided analyzable data. During conditioning on Day 1, participants viewed images of differently colored lamps, two of which were followed by with electric shock (CS+) and a third which was not (CS-). On Day 2, participants were randomly assigned to receive either 50 mg DCS or placebo, administered in a double-blind manner 1 hour prior to extinction training with a single CS+ in a distinct context. Day 3 consisted of tests of extinction recall and renewal. The primary outcome was skin conductance response to conditioned stimuli, and shock expectancy ratings were examined as a secondary outcome. Results showed greater skin conductance and expectancy ratings in response to the CS+ compared to CS- at the end of conditioning. As expected, this difference was no longer present at the end of extinction training, but returned at early recall and renewal phases on Day 3, showing evidence of return of fear. In contrast to hypotheses, DCS had no moderating influence on skin conductance response or expectancy of shock during recall or renewal phases. We did not find evidence of an effect of DCS on the retention of extinction learning in humans in this fear conditioning and extinction paradigm

Sequence locally, think globally:The Darwin tree of life project

The goals of the Earth Biogenome Project—to sequence the genomes of all eukaryotic life on earth—are as daunting as they are ambitious. The Darwin Tree of Life Project was founded to demonstrate the credibility of these goals and to deliver at-scale genome sequences of unprecedented quality for a biogeographic region: the archipelago of islands that constitute Britain and Ireland. The Darwin Tree of Life Project is a collaboration between biodiversity organizations (museums, botanical gardens, and biodiversity institutes) and genomics institutes. Together, we have built a workflow that collects specimens from the field, robustly identifies them, performs sequencing, generates high-quality, curated assemblies, and releases these openly for the global community to use to build future science and conservation efforts.</jats:p

Characterisation of physico-mechanical properties and degradation potential of calcium alginate beads for use in embolisation

High molecular weight alginate beads with 59% mannuronic acid content or 68% guluronic acid were prepared using a droplet generator and crosslinked in calcium chloride. The alginate beads were compared to current embolisation microspheres for compressibility and monitored over 12 weeks for size and weight change at 37°C in low volumes of ringers solutions. A sheep uterine model was used to analyse bead degradation and inflammatory response over 12 weeks. Both the in vitro and in vivo data show good delivery, with a compressibility similar to current embolic beads. In vitro, swelling was noted almost immediately and after 12 weeks the first signs of degradation were noted. No difference was noted in vivo. This study has shown that high molecular weight alginate gel beads were well tolerated by the body, but beads associated with induced thrombi were susceptible to inflammatory cell infiltration. The beads were shown to be easy to handle and were still observable after 3 months in vivo. The beads were robust enough to be delivered through a 2.7 Fr microcatheter. This study has demonstrated that high molecular weight, high purity alginate bead can be considered as semi-permanent embolisation beads, with the potential to bioresorb over time

Crafting Democratic Futures: Understanding Political Conditions and Racialized Attitudes Toward Black Reparations

As a growing number of states and municipalities consider reparative policies for Black Americans, it is important to understand what shapes support for and opposition to these policies. We explore the role that awareness of racial inequality plays in shaping attitudes. Drawing on data from a large, representative survey in Detroit and one national survey, we find that awareness of racial inequality plays a powerful role in the likelihood of supporting reparative policies. Yet, in follow-up surveys, we find that exposing respondents to information on the rationale for and importance of reparations does not shift public support. These findings suggest that it is the awareness of racial inequality that is cultivated over time that appears to be the dominant force in building support for reparations. These findings are particularly important during a time when many school districts are severely restricting access to information about the history of Black Americans