Integration of Lightwave Guides in UV-Microstructured Glass

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Physician antipsychotic overprescribing letters and cognitive, behavioral, and physical health outcomes among people with dementia: a secondary analysis of a randomized clinical trial

Importance Antipsychotics, such as quetiapine, are frequently prescribed to people with dementia to address behavioral symptoms but can also cause harm in this population. Objective To determine whether warning letters to high prescribers of quetiapine can successfully reduce its use among patients with dementia and to investigate the impacts on patients’ health outcomes. Design, Setting, and Participants This is a secondary analysis of a randomized clinical trial of overprescribing letters that began in April 2015 and included the highest-volume primary care physician (PCP) prescribers of quetiapine in original Medicare. Outcomes of patients with dementia were analyzed in repeated 90-day cross-sections through December 2018. Analyses were conducted from September 2021 to February 2024. Interventions PCPs were randomized to a placebo letter or 3 overprescribing warning letters stating that their prescribing of quetiapine was high and under review by Medicare. Main Outcomes and Measures The primary outcome of this analysis was patients’ total quetiapine use in days per 90-day period (the original trial primary outcome was total quetiapine prescribing by study PCPs). Prespecified secondary outcomes included measures of cognitive function and behavioral symptoms from nursing home assessments, indicators of depression from screening questionnaires in assessments and diagnoses in claims, metabolic diagnoses derived from assessments and claims, indicators of use of the hospital and other health care services, and death. Outcomes were analyzed separately for patients living in nursing homes and in the community. Results Of the 5055 study PCPs, 2528 were randomized to the placebo letter, and 2527 were randomized to the 3 warning letters. A total of 84 881 patients with dementia living in nursing homes and 261 288 community-dwelling patients with dementia were attributed to these PCPs. There were 92 874 baseline patients (mean [SD] age, 81.5 [10.5] years; 64 242 female [69.2%]). The intervention reduced quetiapine use among both nursing home patients (adjusted difference, –0.7 days; 95% CI, −1.3 to −0.1 days; P = .02) and community-dwelling patients (adjusted difference, −1.5 days; 95% CI, −1.8 to −1.1 days; P < .001). There were no detected adverse effects on cognitive function (cognitive function scale adjusted difference, 0.01; 95% CI, −0.01 to 0.03; P = .19), behavioral symptoms (agitated or reactive behavior adjusted difference, −0.2%; 95% CI −1.2% to 0.8% percentage points; P = .72), depression, metabolic diagnoses, or more severe outcomes, including hospitalization and death. Conclusions and Relevance This study found that overprescribing warning letters to PCPs safely reduced quetiapine prescribing to their patients with dementia. This intervention and others like it may be useful for future efforts to promote guideline-concordant care

Bifidobacterium breve reduces apoptotic epithelial cell shedding in an exopolysaccharide and MyD88-dependent manner

Certain members of the microbiota genus Bifidobacterium are known to positively influence host well-being. Importantly, reduced bifidobacterial levels are associated with inflammatory bowel disease (IBD) patients, who also have impaired epithelial barrier function, including elevated rates of apoptotic extrusion of small intestinal epithelial cells (IECs) from villi—a process termed ‘cell shedding’. Using a mouse model of pathological cell shedding, we show that mice receiving Bifidobacterium breve UCC2003 exhibit significantly reduced rates of small IEC shedding. Bifidobacterial-induced protection appears to be mediated by a specific bifidobacterial surface exopolysaccharide and interactions with host MyD88 resulting in downregulation of intrinsic and extrinsic apoptotic responses to protect epithelial cells under highly inflammatory conditions. Our results reveal an important and previously undescribed role for B. breve, in positively modulating epithelial cell shedding outcomes via bacterial- and host-dependent factors, supporting the notion that manipulation of the microbiota affects intestinal disease outcomes

Syntrophy drives the microbial electrochemical oxidation of toluene in a continuous-flow "bioelectric well"

Microbial electrochemical technologies (MET) are promising for the remediation of groundwater pollutants such as petroleum hydrocarbons (PH). Indeed, MET can provide virtually inexhaustible electron donors or acceptors directly in the subsurface environment. However, the degradation mechanisms linking contaminants removal to electric current flow are still largely unknown, hindering the development of robust design criteria. Here, we analysed the degradation of toluene, a model PH, in a bioelectrochemical reactor known as "bioelectric well"operated in continuous-flow mode at various influent toluene concentrations. With increasing concentration of toluene, the removal rate increased while the current tended to a plateau, hence the columbic efficiency decreased. Operation at open circuit confirmed that the bioelectrochemical degradation of toluene proceeded via a syntrophic pathway involving cooperation between different microbial populations. First of all, hydrocarbon degraders quickly converted toluene into metabolic intermediates probably by breaking the aromatic ring upon fumarate addition. Subsequently, fermentative bacteria converted these intermediates into volatile fatty acids (VFA) and likely also H2, which were then used as substrates by electroactive microorganisms forming the anodic biofilm. As toluene degradation is faster than subsequent conversion steps, the increase in intermediate concentration could not result in a current increase. This work provides valuable insights on the syntrophic degradation of BTEX, which are essential for the application of microbial electrochemical system to groundwater remediation of petroleum hydrocarbons

Maturation of mammalian H/ACA box snoRNAs: PAPD5-dependent adenylation and PARN-dependent trimming

Small nucleolar and small Cajal body RNAs (snoRNAs and scaRNAs) of the H/ACA box and C/D box type are generated by exonucleolytic shortening of longer precursors. Removal of the last few nucleotides at the 3' end is known to be a distinct step. We report that, in human cells, knock-down of the poly(A) specific ribonuclease (PARN), previously implicated only in mRNA metabolism, causes the accumulation of oligoadenylated processing intermediates of H/ACA box but not C/D box RNAs. In agreement with a role of PARN in snoRNA and scaRNA processing, the enzyme is concentrated in nucleoli and Cajal bodies. Oligo(A) tails are attached to a short stub of intron sequence remaining beyond the mature 3' end of the snoRNAs. The noncanonical poly(A) polymerase PAPD5 is responsible for addition of the oligo(A) tails. We suggest that deadenylation is coupled to clean 3' end trimming, which might serve to enhance snoRNA stability

Chapter 16 - Cross-cutting investment and finance issues

This is the first time an assessment report by the Intergovernmental Panel on Climate Change (IPCC) contains a chapter dedicated to investment and finance to address climate change. This reflects the growing awareness of the relevance of these issues for the design of efficient and effective climate policies

Casting for a sovereign role:Socialising an aspirant state in the Scottish independence referendum

This article examines international reactions to Scotland’s 2014 bid for independence as an instance of socialisation of an aspirant state, what we term ‘pre-socialisation’. Building on and contributing to research on state socialisation and role theory, this study proposes a nexus between roles and sovereignty. This nexus has three components: sovereignty itself is a role casted for by an actor; the sovereign role is entangled with the substantive foreign policy roles the actor might play; and the sovereign role implicates the substantive foreign policy roles of other actors. The Scottish debate on independence provides an effective laboratory to develop and explore these theoretical dimensions of pre-socialisation, revealing the contested value and meaning of sovereignty, the possible roles that an independent Scotland could play, and the projected implications for the role of the UK and other international actors. Our analysis of the Scottish case can provide insights for other cases of pre-socialisation and is more empirically significant following the UK’s 2016 referendum to leave the European Union.PostprintPeer reviewe

Herausforderung Climate Engineering – Bewertung neuer Optionen für den Klimaschutz

[Einleitung] Der Begriff Climate Engineering (CE) fasst verschiedene Technologien zusammen, mit denen bewusst in das Klimasystem der Erde eingegriffen wird, um den anthropogenen Klimawandel zu begrenzen. Dabei lassen sich die CE-Technologien von den herkömmlichen Vermeidungs- und Anpassungsmaßnahmen durch die Tatsache abgrenzen, dass sie ansetzen, nachdem Treibhausgase in die Atmosphäre emittiert wurden, aber bevor es zu einer Anpassung an die Auswirkungen des Klimawandels kommt (Keith 2000). Sie können danach in zwei Gruppen eingeteilt werden, je nachdem ob sie eingesetzt werden, um die atmosphärische Treibhausgaskonzentration zu senken - und damit die Ursache des Klimawandels zurückzuführen - oder ob sie eingesetzt werden, um in die Strahlungsbilanz der Erde einzugreifen und damit die Symptome des Klimawandels abzumildern. Die Technologien der ersten Gruppe werden als Carbon Dioxid Removal (CDR)-Technologien und jene der anderen als Radiation Management (RM)-Technologien bezeichnet. Dabei ist Radiation Management der weitere Begriff, da sowohl Technologien zur direkten Beeinflussung der kurzwelligen (SRM) als auch der langwelligen (TRM) Strahlung beinhaltet sind. Entsprechend könnten Technologien zur ursächlichen Rückführung des Klimawandels eigentlich auch als Concentration Management bezeichnet werden, da theoretisch die atmosphärische Konzentration verschiedener Treibhausgase manipuliert werden könnte (Rickels et al. 2011: 41). Da aber derzeit nur die Konzentration von Kohlendioxid (CO2) beeinflusst wird, wird in der vorliegenden Studie der engere Begriff CDR verwendet. [...

Summary for policymakers

The Working Group III contribution to the IPCC Fifth Assessment Report (WGIII AR5) provides a comprehensive assessment of all relevant options for mitigating climate change through limiting or preventing greenhouse gas emissions, as well as activities that remove them from the atmosphere. It draws on scientific literature accepted for publication prior to 4 October 2013. The WGIII Summary for Policymakers was approved at the Twelfth Session of Working Group III, held in Berlin, Germany, from 7 to 11 April, 2014. During the session, the IPCC plenary also accepted the underlying scientific and technical assessment, which stands at 2000 pages, including more than 700 pages of references