Publications by authors named "POLLOCK C"

Emerging evidence suggests cell exfoliation could be operating under the control of cell metabolism. It is unclear if there are associations between the concentration of exfoliated kidney proximal tubule cells (PTCs) in urine with glycemic control and complications. Our study is aimed at exploring this.

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Aims: The sodium-glucose cotransporter 2 inhibitor canagliflozin reduces the risk of heart failure (HF) hospitalization or cardiovascular death and chronic kidney disease (CKD) progression among patients with type 2 diabetes at high cardiovascular risk or with CKD. Patients with type 2 diabetes commonly have coexisting HF or CKD that require treatment with loop diuretics; however, the prognostic implications of oral loop diuretic intensification are not well characterized.

Methods And Results: In this participant-level pooled analysis of the CREDENCE and CANVAS trials (not including CANVAS-R), 1454/8731 (16.

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Chorus waves are some of the strongest electromagnetic emissions naturally occurring in space and can cause radiation that is hazardous to humans and satellites. Although chorus waves have attracted extreme interest and been intensively studied for decades, their generation and evolution remain highly debated. Here, in contrast to the conventional expectation that chorus waves are governed by planetary magnetic dipolar fields, we report observations of repetitive, rising-tone chorus waves in the terrestrial neutral sheet, where the effects of the magnetic dipole are absent.

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X-ray spectroscopies are uniquely poised to describe the geometric and electronic structure of metalloenzyme active sites under a wide variety of sample conditions. UV/Vis (ultraviolet/visible) spectroscopy is a similarly well-established technique that can identify and quantify catalytic intermediates. The work described here reports the first simultaneous collection of full in situ UV/Vis and high-energy resolution fluorescence detected x-ray absorption spectra.

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Aim: SGLT2 inhibitors may be underused in older adults with type 2 diabetes due to concerns about safety and tolerability. This pooled analysis of the CANVAS Program and CREDENCE trial examined the efficacy and safety of canagliflozin according to age.

Methods: Pooled individual participant data from the CANVAS Program (n = 10 142) and CREDENCE trial (n = 4401) were analysed by baseline age (<65 years, 65 to <75 years, and ≥75 years).

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Freshwater ecosystems are highly biodiverse and important for livelihoods and economic development, but are under substantial stress. To date, comprehensive global assessments of extinction risk have not included any speciose groups primarily living in freshwaters. Consequently, data from predominantly terrestrial tetrapods are used to guide environmental policy and conservation prioritization, whereas recent proposals for target setting in freshwaters use abiotic factors.

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Alkane monooxygenase (AlkB) is the dominant enzyme that catalyzes the oxidation of liquid alkanes in the environment. Two recent structural models derived from cryo-electron microscopy (cryo-EM) reveal an unusual active site: a histidine-rich center that binds two iron ions without a bridging ligand. To ensure that potential photoreduction and radiation damage are not responsible for the absence of a bridging ligand in the cryo-EM structures, spectroscopic methods are needed.

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Article Synopsis
  • People with brain injuries often have lower resiliency, making it crucial to measure resilience to help them cope with challenges.
  • The review identified nine self-report resiliency measures suitable for individuals after acquired brain injury and evaluated their reliability and usefulness based on established guidelines.
  • Future research could focus on applying these validated measures in clinical settings to enhance rehabilitation strategies aimed at improving resilience in patients with brain injuries.
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Chronic kidney disease (CKD), a global public health problem, causes substantial morbidity and mortality worldwide. Innovative therapeutic strategies to mitigate the progression of CKD are needed due to the limitations of existing treatments. Kv1.

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Background: Upper limb activity following stroke is low, which may limit recovery. We investigated whether a virtually-delivered upper limb program, that included a wearable device with reach-to-grasp feedback, would increase upper limb activity after stroke.

Methods: This was a parallel-group, assessor-blinded, randomized control trial conducted at 6 sites across 5 provinces of the CanStroke Recovery Trials Platform between 2020 to 2022.

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Kidney fibrosis is the common pathological pathway in progressive chronic kidney disease (CKD), and current treatments are largely ineffective. The C-X-C chemokine receptor 4 (CXCR4) is crucial to fibrosis development. By using neural cell adhesion molecules as scaffolds with binding loops that mimic the shape of shark antibodies, fully humanized single-domain i-bodies have been developed.

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  • Assessing ocean biodiversity is challenging, with limited global indicators highlighting overfishing as a major threat, impacting shark and ray populations.
  • Analysis of 1199 species shows their populations have declined by 50% since 1970, with a 19% increase in extinction risk, particularly in regions with high coastal human populations.
  • Sustainable fishing practices and restrictions on threatened species can help prevent further biodiversity loss and maintain ecological balance in marine environments.
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Introduction: Real-world data from patients with chronic kidney disease (CKD) are limited, particularly regarding clinical management, treatment patterns and health-related quality of life (HRQoL) in the context of new therapies and updated standard of care guidelines.

Methods: DISCOVER CKD is an observational cohort study enrolling adult patients with CKD, defined by an International Classification of Diseases, 10th Revision code, or with two estimated glomerular filtration rate measures < 75 ml/min/1.73 m recorded 91-730 days apart.

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Chronic kidney disease (CKD) is a multifactorial health issue characterised by kidney impairment that has significant morbidity and mortality in the global population. Current treatments for CKD fail to prevent progression to end-stage kidney disease, where management is limited to renal replacement therapy or kidney transplantation. Mitochondrial dysfunction has been implicated in the pathogenesis of CKD and can be broadly categorised into abnormalities related to excessive oxidative stress, reduced mitochondrial biogenesis, excess mitochondrial fission and dysregulated mitophagy.

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Introduction: Inhaled fine and ultrafine particulate matter may affect organs other than the lung, including the kidney. Recent studies have consistently shown the possibility of air pollution in highly polluted countries to be nephrotoxic. However, in countries like Australia, where air quality generally adheres to or remains below the WHO standards, the subtle yet consequential impacts of chronic exposure to seemingly safe levels of traffic PM2.

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We report results in the development and testing of a low resource tophat electrostatic analyzer (ESA) for space plasma measurements. This device has been additively manufactured (3D-printed) using fused deposition modeling. The classic tophat design is composed of four plastic pieces, without any surface coatings.

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Introduction: During endobronchial ultrasound transbronchial needle aspiration (EBUS-TBNA), a saline-filled balloon placed over the tip of the bronchoscope is used to improve coupling of the ultrasound transducer to the airway wall. However, it is unknown whether it objectively improves image quality or affects procedural outcomes. Our aim was to establish whether the use of a balloon during EBUS impacts image quality, diagnostic yield, procedure duration or complications.

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Collecting urine samples in neonates by catheterisation or suprapubic puncture causes trauma, whereas self-adhesive collection bags can damage fragile skin. An alternative method is the collection of samples from urine-soaked cotton wool balls placed in diapers. The aim of this study was to compare the concentration of albumin, creatinine, neutrophil gelatinase-associated lipocalin (NGAL), and uromodulin between clean-catch urine and samples collected in cotton wool balls in neonates and assess the efficiency of exosome extraction.

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Introduction: Seated exercises can reduce the need for in-person assistance during remote-delivered programs, but its safety implications in stroke are unknown.

Objective: This case-report investigates the effect of a novel, remotely delivered 2-week seated exercise program on mobility in a person living with stroke.

Case Description: A 68-year-old man living with a chronic stroke (>1-year post-stroke) and moderate disability (Modified Rankin Scale = 3) participated in a 2-week seated exercise program delivered remotely through videoconferencing (Zoom).

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Introduction: Physiotherapy services have been typically provided in-person since the profession usually involves a therapist providing hands-on assessment and treatments. The COVID-19 pandemic provided an opportunity to study physiotherapists' adaptation to telerehabilitation (phone or videoconference).

Objective: This study aimed: (1) to explore how physiotherapists adapted to the transition to delivering telerehabilitation, (2) to assess physiotherapists' perceptions of implementing telerehabilitation, and (3) to identify the challenges and facilitators of delivering telerehabilitation.

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Article Synopsis
  • This study aimed to assess whether DMX-200, a chemokine receptor antagonist, combined with candesartan, could improve outcomes for hospitalized adults under 65 with moderate to severe COVID-19.
  • Conducted in ten hospitals in India, the trial was double-blind and placebo-controlled but was terminated early due to challenges in recruitment, resulting in only 49 participants.
  • Preliminary results showed both treatment groups had similar outcomes, with no significant differences in disease progression, ICU admissions, or length of hospital stays, indicating that the intervention may not have had a notable impact.
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Background: There is a need to develop accurate and reliable non-invasive methods to evaluate chronic kidney disease (CKD) status and assess disease progression. Given it is recognized that dysregulation in metabolic pathways occur from early CKD, there is a basis in utilizing metabolomic biomarkers to monitor CKD progression. Volatile Organic Compounds (VOCs), a form of metabolomic biomarker, are gaseous products of metabolic processes in organisms which are typically released with greater abundance in disease conditions when there is dysregulation in metabolism.

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Background/objectives: The implementation of information quality value stream maps (IQ-VSMs) in food animal production systems can increase our understanding of the opportunities and challenges when using laboratory testing for antimicrobial resistance (AMR) to support antimicrobial stewardship (AMS). Our objectives were to (1) explore the implementation of information quality value stream mapping as a continuous improvement tool to inform decisions for bovine respiratory disease (BRD) management and AMS and (2) apply the information quality dimensions to identified Kaizen opportunities for the integration of laboratory data into BRD management systems to assess the appropriateness of BRD treatment plans in western Canadian feedlot production.

Methods: A 'Current State' IQ-VSM outlined the processes, available information, information processing steps, and control decisions contributing to BRD management and treatment in commercial western Canadian feedlots, recognizing that laboratory BRD pathogens and AMR data are typically not part of BRD management.

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