848 research outputs found

    Linguistics

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    Contains reports on three research projects.National Science Foundatio

    Linguistics

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    Contains research objectives and reports on two research projects.National Institutes of Health (Grant MH-13390-01)U.S. Air Force (Electronic Systems Division) under Contract AF 19(628)-248

    Does Twitter User Activity Promote Gambling-Related Content?

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    Social media has provided gambling operators with access to millions of individuals and novel ways to promote gambling. Research has suggested that exposure to gambling advertisements on social media platforms is associated with increased gambling in individuals at-risk for problem gambling. These findings bring into question whether social media platforms are sensitive to differences in user account activity (e.g., tweets, likes, accounts visited) when displaying advertisements and gambling-related content. To assess for these differences, four Twitter accounts were created and assigned to send out tweets containing pro-wagering versus safe-wagering-related messages. Additionally, one of each account was assigned to interact with Twitter profiles associated with gambling operators or responsible gambling. Accounts were assessed daily for advertisement traffic and gambling-related content from January to March 2022. The study included three phases that implemented changes in privacy settings, websites visited, and gambling-related tweets observed. To assess for between-phase differences, Tau-U analyses were performed using R. No gambling advertisements were observed throughout the study. Nongambling advertisements remained constant across all accounts. Gambling-related content observed depended on assigned account activity. Accounts that interacted with gambling operators’ profiles were only displayed pro-wagering-related content. Conversely, accounts that interacted with responsible gambling profiles were only displayed safe-wagering-related content. Findings suggest that Twitter is sensitive to differences in account activity. Social media platforms’ ethical obligations have been a topic of concern. However, it seems that the type of gambling-related content displayed on Twitter largely depends on the user’s activity, thus, placing responsibility for what is displayed on the user

    Comprehensive, long-term evaluation of pancreatic exocrine insufficiency after pancreatoduodenectomy

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    AIMS: Treatment of pancreatic exocrine insufficiency (PEI) following pancreatoduodenectomy (PD) improves quality of life, clinical outcomes, and survival. However, diagnosing PEI following PD is challenging owing to the difficulties with current tests and often non-specific symptoms. This work aims to quantify the true rate of long-term PEI in patients following a PD.METHODS: Patients underwent a PEI screen approximately one to two years following PD for oncologic indication, including the 13C Mixed triglyceride breath test (13CMTGT), faecal elastase 1 (FE-1) and the PEI Questionnaire (PEI-Q). Four reviewers with expertise in PEI reviewed the results blinded to other decisions to classify PEI status; disagreements were resolved on consensus.RESULTS: 26 patients were recruited. Of those with valid test results, these were indicative of PEI based on pre-specified thresholds for 60 % (15/25) for the 13CMTGT, 82 % (18/22) for FE-1, and 88 % (22/25) for the PEI-Q. After discussion between reviewers, the consensus PEI prevalence was 81 % (95 % CI: 61-93 %; 21/26), with 50 % (N = 13) classified as having severe, 23 % (N = 6) moderate, and 8 % (N = 2) mild PEI.DISCUSSION: Since no ideal test exists for PEI, this collation of diagnostic modalities and blinded expert review was designed to ascertain the true rate of long-term PEI following PD. This required our cohort to survive a year, travel to hospital, and undergo a period of starvation and PERT hold, and therefore there is likely to be recruitment bias towards fitter, younger patients with less aggressive pathology. Despite this, over 80 % were deemed to have PEI, with over 90 % of these being considered moderate or severe.</p

    Involvement of the Gut Microbiome in the Local and Systemic Immune Response to Pancreatic Ductal Adenocarcinoma

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    Simple Summary: One of the reasons that pancreatic cancer is such a deadly disease is that it is able to evade the body’s usual defence system (the immune system). It has been shown that the population of microorganisms in the human gut (the gut microbiome) plays a role in regulating the human immune system. This article outlines the ways in which the gut microbiome influences the immune system in pancreatic cancer both within the bloodstream (systemic) and around the pancreatic tumour itself (local). These are important mechanisms because greater understanding of these will direct the development of future treatments for pancreatic cancer. It is possible that some of these treatment options will target the gut microbiome in order to boost the immune system’s response to pancreatic cancer. Abstract: The systemic and local immunosuppression exhibited by pancreatic ductal adenocarcinoma (PDAC) contributes significantly to its aggressive nature. There is a need for a greater understanding of the mechanisms behind this profound immune evasion, which makes it one of the most challenging malignancies to treat and thus one of the leading causes of cancer death worldwide. The gut microbiome is now thought to be the largest immune organ in the body and has been shown to play an important role in multiple immune-mediated diseases. By summarizing the current literature, this review examines the mechanisms by which the gut microbiome may modulate the immune response to PDAC. Evidence suggests that the gut microbiome can alter immune cell populations both in the peripheral blood and within the tumour itself in PDAC patients. In addition, evidence suggests that the gut microbiome influences the composition of the PDAC tumour microbiome, which exerts a local effect on PDAC tumour immune infiltration. Put together, this promotes the gut microbiome as a promising route for future therapies to improve immune responses in PDAC patients
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