Publications by authors named "Swain L"

Background: Alcohol (AC) and nonalcohol-associated cirrhosis (NAC) epidemiology studies are limited by available case definitions. We compared the diagnostic accuracy of previous and newly developed case definitions to identify AC and NAC hospitalizations.

Methods: We randomly selected 700 hospitalizations from the 2008 to 2022 Canadian Discharge Abstract Database with alcohol-associated and cirrhosis-related International Classification of Diseases 10th revision codes.

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Drug-induced aseptic meningitis is a rare condition that occurs because of an adverse reaction to medications such as nonsteroidal anti-inflammatory drugs (NSAIDs) and antibiotics. Unlike bacterial or viral meningitis, aseptic meningitis is not caused by an infection, but rather by an inflammatory response. This condition creates a challenge since patients with aseptic meningitis often present with classic clinical meningeal symptoms, including fever, headache, and neck stiffness.

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  • In-hospital mortality rates for patients experiencing cardiogenic shock remain high, even with advanced support devices like VA-ECMO and Impella.
  • A study analyzed blood samples from 11 patients before and after device implantation, focusing on changes in the plasma proteome using SOMAscan technology.
  • The findings indicated that both ECMO and Impella lead to reduced inflammatory markers and increased cell death among inflammatory cells, suggesting that these proteins could be potential targets for new treatments or biomarkers in managing acute myocardial circulatory support (AMCS).
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  • Cardiolipin is crucial for mitochondrial function and is impacted by VA-ECMO, which is used in treating acute myocardial infarction, but its effects on heart damage are not well understood.
  • The study found that both human patients requiring VA-ECMO and healthy swine subjected to this treatment showed significantly lower levels of cardiolipin and the enzyme tafazzin, indicating potential detrimental effects on the heart.
  • Importantly, VA-ECMO increased heart damage during ischemia/reperfusion, evidenced by a larger infarct size in swine, suggesting that depleting cardiolipin during treatment may worsen myocardial injury.
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Background: Health research partnership approaches have grown in popularity over the past decade, but the systematic evaluation of their outcomes and impacts has not kept equal pace. Identifying partnership assessment tools and key partnership characteristics is needed to advance partnerships, partnership measurement, and the assessment of their outcomes and impacts through systematic study.

Objective: To locate and identify globally available tools for assessing the outcomes and impacts of health research partnerships.

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  • No research has looked into how BMP-9, a protein related to the transforming growth factor-β superfamily, affects heart remodeling after a heart attack (myocardial infarction or MI).
  • In experiments with mice lacking BMP-9, researchers found that these mice had lower survival rates and a higher chance of heart rupture following a heart attack.
  • The study also revealed that without BMP-9, there was more collagen buildup and increased activity of enzymes that break down collagen, suggesting BMP-9 plays a crucial role in heart recovery after MI and could be a target for treatments to enhance recovery.
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  • The study investigates the role of ALK1, a receptor linked to TGFβ, in heart remodeling after a heart attack (myocardial infarction).
  • Researchers found that mice with reduced ALK1 activity had lower survival rates and higher instances of cardiac rupture compared to normal mice.
  • The findings suggest that ALK1 is essential for heart recovery post-MI and could be a target for treatments to enhance survival following a heart attack.
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In a metal-catalyzed oxidative addition, an oriented external electric field (EEF) catalyzes the reaction along one direction and inhibits it when applied in the opposite direction. Beyond a threshold value, the inhibitory direction becomes catalyzing by swapping the metal-to-ligand charge transfer (MLCT) to ligand-to-metal charge-transfer (LMCT) or . The change in direction of the charge-transfer mechanism triggers the inversion of the dipole moment along the reaction axis, that results in the resurgence of catalysis.

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  • The study investigates whether combining ECMO with Impella (EC-Pella) can reduce heart damage in acute myocardial infarction, finding that EC-Pella lowers infarct size compared to ECMO alone when started before reperfusion.
  • Results indicate that using EC-Pella before activating ECMO helps to decrease left ventricular pressure-volume area and activates protective signaling, but it doesn't fix mitochondrial dysfunction like ECMO alone.
  • The research suggests that while EC-Pella may reduce heart damage, the processes that protect the heart and those that repair damage may not be directly linked when using ECMO in the context of acute myocardial infarction.
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Background: Suggested mechanisms for SARS-CoV-2 direct liver infection have been proposed by others to involve both cholangiocytes and hepatocytes. Early clinical studies have highlighted abnormal liver biochemistry with COVID-19 infection as often not being severe, with elevated liver enzymes <5X the upper limit of normal.

Methods: Liver enzymes were evaluated and compared in patients admitted with a diagnosis of COVID-19 in a deidentified Internal Medicine-Medical Teaching Unit/hospitalist admission laboratory database.

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Despite innovations in contraceptive methods, unintended pregnancies remain common. Researchers have examined psychological approaches to decrease unintended pregnancies through contraceptive use. These interventions have involved applying aspects of social cognitive theory, the health belief model and self-determination theory.

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Objective: To identify and assess the globally available valid, reliable and acceptable tools for assessing health research partnership outcomes and impacts.

Methods: We searched Ovid MEDLINE, Embase, CINAHL Plus and PsycINFO from origin to 2 June 2021, without limits, using an a priori strategy and registered protocol. We screened citations independently and in duplicate, resolving discrepancies by consensus and retaining studies involving health research partnerships, the development, use and/or assessment of tools to evaluate partnership outcomes and impacts, and reporting empirical psychometric evidence.

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Background: Accurate, consistent assessment of outcomes and impacts is challenging in the health research partnerships domain. Increased focus on tool quality, including conceptual, psychometric and pragmatic characteristics, could improve the quantification, measurement and reporting partnership outcomes and impacts. This cascading review was undertaken as part of a coordinated, multicentre effort to identify, synthesize and assess a vast body of health research partnership literature.

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Introduction: Management of medication regimens and improvement of medication-taking behaviours may require various levels of support, education, engagement and barrier reduction from health services and or pharmacists. The use of dose administration aids (DAAs) may improve medication management for some people, and therefore may facilitate positive health benefits. This Australian study was informed by a literature review that found there was a dearth of data about Aboriginal and Torres Strait Islander peoples' use of DAAs.

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Background: The primary health care management of chronic disease affecting Aboriginal and Torres Strait Islander peoples requires healthcare quality and equity demands to be met, and systems that foster better team-based care. Non-dispensing pharmacists (NDPs) integrated within primary healthcare settings can enhance the quality of patient care, although factors that enable or challenge integration within these settings need to be better understood.

Objectives: To investigate enabling factors and barriers influencing integration of NDPs within Aboriginal community-controlled health services delivering primary health care.

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Disintegrin and metalloproteinase domain-containing protein 17 (ADAM17) is a ubiquitously expressed membrane-bound enzyme that mediates shedding of a wide variety of important regulators in inflammation including cytokines and adhesion molecules. Hepatic expression of numerous cytokines and adhesion molecules are increased in cholestatic liver diseases including primary biliary cholangitis (PBC) and primary sclerosing cholangitis (PSC), however, the pathophysiological role of ADAM17 in regulating these conditions remains unknown. Therefore, we evaluated the role of ADAM17 in a mouse model of cholestatic liver injury due to bile duct ligation (BDL).

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  • - New research reveals that acute myocardial infarction (AMI) heightens inflammation and MMP-9 activity in the kidney, underscoring a need for better understanding of this response.
  • - A study involving swine showed that using Impella support before heart reperfusion decreased MMP-9 levels and reduced kidney damage compared to ischemia-reperfusion or VA-ECMO methods.
  • - Impella support not only lessened heart injury but also mitigated harmful kidney signaling pathways, suggesting it may offer protective benefits during cardiac events like AMI.
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In-hospital mortality associated with cardiogenic shock (CS) remains high despite introduction of mechanical circulatory support. In this study, we aimed to investigate whether systemic inflammation is associated with clinical outcomes in CS. We retrospectively analyzed systemic cytokine levels and the neutrophil-to-lymphocyte ratio (NLR), a marker of low-grade inflammation, among 134 patients with CS supported by VA-ECMO or Impella.

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A lack of quantitative information on the species composition of parasite communities present in fecal samples is a major limiting factor for the sensitivity, accuracy and interpretation of the diagnostic tests commonly used to assess anthelmintic efficacy and resistance. In this paper, we investigate the ability of ITS-2 rDNA nemabiome metabarcoding to enhance fecal egg count reduction testing by providing information on the effect of drug treatments on individual parasite species. Application of ITS-2 rDNA nemabiome metabarcoding to fecal samples from ewes from over 90 flocks across western Canada revealed high gastrointestinal nematode infection intensities in many flocks with Haemonchus contortus being the most abundant species followed by Teladorsagia circumcincta and then Trichostrongylus colubriformis.

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Background: Myocardial damage due to acute ST-segment elevation myocardial infarction (STEMI) remains a significant global health problem. New approaches to limit myocardial infarct size and reduce progression to heart failure after STEMI are needed. Mechanically reducing left ventricular (LV) workload (LV unloading) before coronary reperfusion is emerging as a potential approach to reduce infarct size.

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Introduction: Rural and remote Australia has a shortage of allied health clinicians. The provision of quality rural placement experiences for allied health students has been a significant strategy to address these health workforce shortages. Service learning rural placements are providing allied health services in small rural towns where previously allied health services were limited or did not exist.

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