Publications by authors named "Davy S"

Oxylipin signalling is central in biology, mediating processes such as cellular homeostasis, inflammation and molecular signalling. It may also facilitate inter-partner communication in the cnidarian-dinoflagellate symbiosis, though this aspect remains understudied. In this study, four oxylipin receptors were characterised using immunohistochemistry and immunoblotting in the sea anemone Exaiptasia diaphana ('Aiptasia'): Prostaglandin E2 receptor 2 (EP2) and 4 (EP4), Transient Receptor Potential cation channel A1 (TRPA1) and Glutamate Receptor Ionotropic, Kainate 2 (GRIK2).

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Background: The National Health Service (NHS) Long Term Plan, published in 2019, committed to ensuring that every patient in England has the right to digital-first primary care by 2023-2024. The COVID-19 pandemic and infection prevention and control measures accelerated work by the NHS to enable and stimulate the use of online consultation (OC) systems across all practices for improved access to primary care.

Objective: We aimed to explore general practice coding activity associated with the use of OC systems in terms of trends, COVID-19 effect, variation, and quality.

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Importance: Associations have been found between COVID-19 and subsequent mental illness in both hospital- and population-based studies. However, evidence regarding which mental illnesses are associated with COVID-19 by vaccination status in these populations is limited.

Objective: To determine which mental illnesses are associated with diagnosed COVID-19 by vaccination status in both hospitalized patients and the general population.

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Background: Some studies have shown that the incidence of type 2 diabetes increases after a diagnosis of COVID-19, although the evidence is not conclusive. However, the effects of the COVID-19 vaccine on this association, or the effect on other diabetes subtypes, are not clear. We aimed to investigate the association between COVID-19 and incidence of type 2, type 1, gestational and non-specific diabetes, and the effect of COVID- 19 vaccination, up to 52 weeks after diagnosis.

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Cellular mechanisms responsible for the regulation of nutrient exchange, immune responses, and symbiont population growth in the cnidarian-dinoflagellate symbiosis are poorly resolved, particularly with respect to the dinoflagellate symbiont. Here, we characterized proteomic changes in the native symbiont Breviolum minutum during colonization of its host sea anemone Exaiptasia diaphana ("Aiptasia"). We also compared the proteome of this native symbiont in the established symbiotic state with that of a non-native symbiont, Durusdinium trenchii.

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Article Synopsis
  • * In the OpenSAFELY-TPP database, 78.2% of patients had their ethnicity recorded in primary care as of January 2022, with higher rates in women and those with serious health conditions.
  • * The primary care ethnicity data closely matched the 2021 UK census data, with a high consistency found among patients with multiple ethnicity records, particularly indicating issues with classification for those recorded as "Other."
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  • - The study examines how the Covid-19 pandemic influenced the rates of group A streptococcal infections and related antibiotic prescriptions in primary care practices across England from January 2018 to March 2023.
  • - Significant findings show that infections and antibiotic prescriptions peaked in December 2022, surpassing levels seen during the 2017-18 season, with notable increases in rates for sore throat, scarlet fever, and invasive infections.
  • - The research highlights a concerning trend, reporting that the rate ratios for infections and prescriptions in the 2022-23 season were considerably higher compared to the pre-pandemic period, suggesting lasting impacts from the pandemic on public health.
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Article Synopsis
  • Electronic health records (EHRs) are essential for researching medical products and informing public health, but reproducibility in EHR research is a significant challenge.
  • OpenSAFELY is an open-source software platform created during the COVID-19 pandemic to improve the reproducibility of research using EHRs by standardizing workflows and ensuring consistent computational environments.
  • The platform promotes transparency by enforcing code-sharing, providing an audit trail for data usage, and integrating tools that support reproducible research practices.
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Concentrations of dissolved nitrogen in seawater can affect the resilience of the cnidarian-dinoflagellate symbiosis to climate change-induced bleaching. However, it is not yet known how the assimilation and translocation of the various nitrogen forms change during heat stress, nor how the symbiosis responds to nutrient depletion, which may occur due to increasing water stratification. Here, the tropical scleractinian coral Stylophora pistillata, in symbiosis with dinoflagellates of the genus Symbiodinium, was grown at different temperatures (26°C, 30°C and 34°C), before being placed in nutrient-replete or -depleted seawater for 24 h.

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Aims: The COVID-19 pandemic caused significant disruption to routine activity in primary care. Medication reviews are an important primary care activity ensuring safety and appropriateness of prescribing. A disruption could have significant negative implications for patient care.

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Infection with SARS-CoV-2 is associated with an increased risk of arterial and venous thrombotic events, but the implications of vaccination for this increased risk are uncertain. With the approval of NHS England, we quantified associations between COVID-19 diagnosis and cardiovascular diseases in different vaccination and variant eras using linked electronic health records for ~40% of the English population. We defined a 'pre-vaccination' cohort (18,210,937 people) in the wild-type/Alpha variant eras (January 2020-June 2021), and 'vaccinated' and 'unvaccinated' cohorts (13,572,399 and 3,161,485 people respectively) in the Delta variant era (June-December 2021).

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Objectives: To investigate the effect of the COVID-19 pandemic on prostate cancer incidence, prevalence, and mortality in England.

Patients And Methods: With the approval of NHS England and using the OpenSAFELY-TPP dataset of 24 million patients, we undertook a cohort study of men diagnosed with prostate cancer. We visualised monthly rates in prostate cancer incidence, prevalence, and mortality per 100 000 adult men from January 2015 to July 2023.

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The fragmentation of plastic debris is a key pathway to the formation of microplastic pollution. These disintegration processes depend on the materials' physical and chemical characteristics, but insight into these interrelationships is still limited, especially under natural conditions. Five plastics of known polymer/additive compositions and processing histories were deployed in aquatic environments and recovered after six and twelve months.

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The intracellular coral-dinoflagellate symbiosis is the engine that underpins the success of coral reefs, one of the most diverse ecosystems on the planet. However, the breakdown of the symbiosis and the loss of the microalgal symbiont (i.e.

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Gas chromatography-mass spectrometry (GC-MS)-based approaches have proven to be powerful for elucidating the metabolic basis of the cnidarian-dinoflagellate symbiosis and how coral responds to stress (i.e., during temperature-induced bleaching).

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Background: The COVID-19 pandemic affected how care was delivered to vulnerable patients, such as those with dementia or learning disability.

Objective: To explore whether this affected antipsychotic prescribing in at-risk populations.

Methods: With the approval of NHS England, we completed a retrospective cohort study, using the OpenSAFELY platform to explore primary care data of 59 million patients.

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Article Synopsis
  • - The resilience of the distribution grid is crucial for distribution system operators (DSO), as climate change and severe weather lead to service disruptions, negatively impacting their performance metrics and incurring financial penalties.
  • - A new software-based solution called Fault Location, Isolation and Service Restoration (FLISR) has been proposed to enhance fault detection and response times, aimed at minimizing customer disruptions and associated financial losses.
  • - Trials of the FLISR solution in southeast Ireland indicated that it could significantly improve the speed of resolving faults compared to existing systems, ultimately benefiting both the grid's management and customer service quality.
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Background: Healthcare across all sectors, in the UK and globally, was negatively affected by the COVID-19 pandemic. We analysed healthcare services delivered to people with pancreatic cancer from January 2015 to March 2023 to investigate the effect of the COVID-19 pandemic.

Methods: With the approval of NHS England, and drawing from a nationally representative OpenSAFELY-TPP dataset of 24 million patients (over 40% of the English population), we undertook a cohort study of people diagnosed with pancreatic cancer.

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The symbiosis between cnidarians and dinoflagellates underpins the success of reef-building corals in otherwise nutrient-poor habitats. Alterations to symbiotic state can perturb metabolic homeostasis and thus alter the release of biogenic volatile organic compounds (BVOCs). While BVOCs can play important roles in metabolic regulation and signalling, how the symbiotic state affects BVOC output remains unexplored.

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Article Synopsis
  • - The COVID-19 pandemic significantly disrupted NHS primary care services, leading to the creation of the OpenSAFELY Service Restoration Observatory (SRO) to track clinical activity trends throughout this period.
  • - An open-source data management framework was developed to analyze electronic health records from 48 million adults, focusing on key measures like blood pressure monitoring and asthma reviews from January 2019 to December 2021.
  • - While most clinical activities showed signs of recovery by April 2021, some measures like medication and blood pressure reviews continued to experience notable reductions, indicating lasting impacts from the pandemic.
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Objective: To implement complex, PINCER (pharmacist led information technology intervention) prescribing indicators, on a national scale with general practice data to describe the impact of the covid-19 pandemic on safe prescribing.

Design: Population based, retrospective cohort study using federated analytics.

Setting: Electronic general practice health record data from 56.

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Marine heatwaves are increasingly subjecting organisms to unprecedented stressful conditions, but the biological consequences of these events are still poorly understood. Here we experimentally tested the presence of carryover effects of heatwave conditions on the larval microbiome, settlers growth rate and metamorphosis duration of the temperate sponge . The microbial community of adult sponges changed significantly after ten days at 21°C.

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Article Synopsis
  • Microeukaryotes, like the dinoflagellate family Symbiodiniaceae, show faster genetic and functional variations compared to physical traits, making it essential to analyze diversity across different biological levels for better evolutionary insights.
  • Despite advancements in genomics, inconsistent interpretations of genetic data among researchers hinder progress in understanding Symbiodiniaceae and their roles in marine ecosystems.
  • The article identifies challenges in evaluating genetic diversity at the species, population, and community levels, proposes accepted techniques, and emphasizes the need for collaboration to overcome unresolved issues and stimulate advancements in coral reef research.
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The COVID-19 vaccines were developed and rigorously evaluated in randomized trials during 2020. However, important questions, such as the magnitude and duration of protection, their effectiveness against new virus variants, and the effectiveness of booster vaccination, could not be answered by randomized trials and have therefore been addressed in observational studies. Analyses of observational data can be biased because of confounding and because of inadequate design that does not consider the evolution of the pandemic over time and the rapid uptake of vaccination.

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Article Synopsis
  • The study investigated how different demographic and clinical groups experienced varying mortality risks related to COVID-19 across five pandemic waves in England, using data from the OpenSAFELY platform.
  • A total of nearly 19 million adults were analyzed across each wave, with significant trends showing a decrease in crude COVID-19-related death rates from the first wave to the fifth.
  • The highest standardized death rates were found among older adults and those with certain health conditions, such as advanced kidney disease or dementia, especially in the first wave of the pandemic.
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