Publications by authors named "Cowley A"

Background: Hypertension or elevated blood pressure (BP) is a worldwide clinical challenge and the leading primary risk factor for kidney dysfunctions, heart failure, and cerebrovascular disease. The kidney is a central regulator of BP by maintaining sodium-water balance. Multiple genome-wide association studies revealed that BP is a heritable quantitative trait, modulated by several genetic, epigenetic, and environmental factors.

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Background: Type 2 diabetes (T2D) leads to cardiovascular remodeling, and heart failure has emerged as a major complication of T2D. There is a limited understanding of the impact of T2D on the right heart. This study aimed to assess subclinical right heart alterations and their contribution to aerobic exercise capacity (peak oxygen consumption; peak VO) in adults with T2D.

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Arterioles are small blood vessels located just upstream of capillaries in nearly all tissues. The constriction and dilation of arterioles regulate tissue perfusion and are primary determinants of systemic blood pressure (BP). Abnormalities in arterioles are central to the development of major diseases such as hypertension, stroke, and microvascular complications of diabetes.

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Article Synopsis
  • - Studies indicate that blood flow to the renal medulla is crucial for regulating blood pressure and pressure-natriuresis.
  • - Research in rats suggests that proper medullary blood flow is essential for balancing blood pressure and that reduced blood flow can lead to hypertension.
  • - Enhanced blood flow in the medulla can lower hypertension, and nitric oxide production in this area is vital for protecting against damage caused by various harmful agents.
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Background: There is a need to develop research focussed healthcare professionals with the clinical experience and academic skills to meet the needs of a diverse population. Yet, healthcare professionals from ethnic minority backgrounds are often faced with personal, structural or organisational barriers, which prevent them from accessing and applying for development opportunities.

Aim: To undertake an evaluation of the Step into Clinical Academic Careers' programme.

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Most common sequence variants associated with human traits are in noncoding regions of the genome, form haplotypes with other noncoding variants, and exhibit small effect sizes in the general population. Determining the physiological roles and mechanisms of action for these noncoding variants, particularly large haplotypes containing multiple variants, is both critical and challenging. To address this challenge, we developed an approach that integrates physiological studies in genetically engineered and phenotypically permissive animal models, precise editing of large haplotypes in human induced pluripotent stem cells (hiPSCs), and targeted chromatin conformation analysis.

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The development of devices for the in situ resource utilization (ISRU) of lunar surface powder (regolith) by means of microwaves needs regolith simulants with electromagnetic properties similar to the lunar regolith. This document deals with the measurement of complex permittivity and dielectric loss tangent of the aforementioned simulants at ambient temperature from 400 MHz to 20 GHz, performing measurements using two lunar dust simulants, EAC-1A and JSC-2A, resulting, on the one hand, in permittivity values of ε'=-0.0432f+4.

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  • This study compares the effects of two mTOR inhibitors, rapamycin and PP242, on hypertension and kidney function in salt-sensitive rats.
  • While rapamycin reduced hypertension and kidney inflammation, only PP242 completely prevented hypertension and improved kidney health, showing significant natriuretic effects.
  • The research identified that PP242's natriuretic effect primarily results from inhibiting the Na-Cl cotransporter and reducing Na channel activity, suggesting it may be a better therapeutic option for managing blood pressure and kidney injury in salt-sensitive individuals.
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Background: Functional loss, the inability to perform necessary or desired tasks, is a common consequence of life-limiting illnesses and associated symptoms (pain, fatigue, breathlessness, etc.) and causes suffering for patients and families. Rehabilitation, a set of interventions designed to address functional loss, is recognised as essential within palliative care, as it can improve quality of life and reduce care costs.

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Introduction: The optimum time to mobilise (standing, walking) following spinal cord injury (SCI) is unknown but may have implications for patient outcomes. There are no high-quality experimental studies that examine this issue, with a paucity of guidance for clinicians. Pre-clinical studies lead research in this field and can contribute to knowledge and support future clinical practice.

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Pain and frailty are closely linked. Chronic pain is a risk factor for frailty, and frailty is a risk factor for pain. People living with frailty also commonly have cognitive impairment, which can make assessment of pain and monitoring of pain management even more difficult.

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Essential hypertension, a multifaceted disorder, is a worldwide health problem. A complex network of genetic, epigenetic, physiological, and environmental components regulates blood pressure (BP), and any dysregulation of this network may result in hypertension. Growing evidence suggests a role for epigenetic factors in BP regulation.

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  • The study examines the changing use of intraosseous versus intravenous drug administration during out-of-hospital cardiac arrests in England from 2015 to 2020.
  • Data from 75,343 adult patients showed that intraosseous access significantly increased from 22.8% in 2015 to 42.5% in 2020, with a consistent rise in odds each month.
  • The findings suggest a shift towards intraosseous access, indicating a need for further research through randomized controlled trials to determine the effectiveness of these different drug delivery methods during cardiac arrest.
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Objective: To determine the effectiveness of an exercise and functional activity therapy intervention in adults with early dementia or mild cognitive impairment compared with usual care.

Design: Randomised controlled trial.

Setting: Participants' homes and communities at five sites in the United Kingdom.

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Background: The PRomoting Activity, Independence and Stability in Early Dementia (PrAISED) study delivered an exercise and functional activity programme to participants living with dementia. A Randomised Controlled Trial showed no measurable benefits in activities of daily living, physical activity or quality of life.

Objective: To explore participants' responses to PrAISED and explain why an intervention that might be expected to have produced measurable health gains did not do so.

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In this study, novel methods were developed, which allowed continuous (24/7) measurement of arterial blood pressure and renal blood flow in freely moving rats and the intermittent collection of arterial and renal venous blood to estimate kidney metabolic fluxes of O and metabolites. Specifically, the study determined the effects of a high salt (HS; 4.0% NaCl) diet upon whole kidney O consumption and arterial and renal venous plasma metabolomic profiles of normal Sprague-Dawley rats.

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Integrated computational modeling provides a mechanistic and quantitative framework to characterize alterations in mitochondrial respiration and bioenergetics in response to different metabolic substrates . These alterations play critical roles in the pathogenesis of diseases affecting metabolically active organs such as heart and kidney. Therefore, the present study aimed to develop and validate thermodynamically constrained integrated computational models of mitochondrial respiration and bioenergetics in the heart and kidney cortex and outer medulla (OM).

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Purpose: To investigate the longitudinal associations between pain and depressive symptoms in adults.

Methods: Prospective cohort study on data from 28,515 community-dwelling adults ≥ 50 years, free from depression at baseline (Wave 5), with follow-up in Wave 6 of the Survey of Health, Ageing and Retirement in Europe (SHARE). Significant depressive symptoms were defined by a EURO-D score ≥ 4.

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Mitochondria are major sources of reactive oxygen species (ROS), which play important roles in both physiological and pathological processes. However, the specific contributions of different ROS production and scavenging components in the mitochondria of metabolically active tissues such as heart and kidney cortex and outer medulla (OM) are not well understood. Therefore, the goal of this study was to determine contributions of different ROS production and scavenging components and provide detailed comparisons of mitochondrial respiration, bioenergetics, ROS emission between the heart and kidney cortex and OM using tissues obtained from the same Sprague-Dawley rat under identical conditions and perturbations.

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Background: A common feature of single-cell RNA-seq (scRNA-seq) data is that the number of cells in a cell cluster may vary widely, ranging from a few dozen to several thousand. It is not clear whether scRNA-seq data from a small number of cells allow robust identification of differentially expressed genes (DEGs) with various characteristics.

Results: We addressed this question by performing scRNA-seq and poly(A)-dependent bulk RNA-seq in comparable aliquots of human induced pluripotent stem cells-derived, purified vascular endothelial and smooth muscle cells.

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  • A TMJ Patient-Led RoundTable initiative was formed due to inconsistent reports about TMJ implant outcomes, leading to the need for a Coordinated Registry Network (CRN) to gather and analyze data on temporomandibular disorders (TMD) and their treatment.
  • The study aimed to establish a core minimum dataset for TMD patients, using a Delphi survey to collect and refine data elements based on input from 92 participants, retaining only those with over 75% consensus.
  • Ultimately, 397 data elements were selected for inclusion, with a focus on integrating these into the HIVE web application and CHIOS™ blockchain platform to enhance data reliability and patient consent tracking.
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Background: Understanding symptoms of temporomandibular joint disorders (TMDs) can help doctors and patients document, monitor, and manage the disease and help researchers evaluate interventions. Patients with TMDs experience symptoms ranging from mild to severe, primarily in the head and neck region. This study describes findings from formative patient focus groups to capture, categorize, and prioritize symptoms of TMDs towards the development of a patient-reported outcome measure (PROM).

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To achieve a sustainable human presence on the Moon, it is critical to develop technologies utilising the local resources (a.k.a.

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In the present study, novel methods were developed which allowed continuous (24/7) measurement of blood pressure (BP) and renal blood flow (RBF) in freely moving rats and the intermittent collection of arterial and renal venous blood to estimate kidney metabolic fluxes of O and metabolites. The study determined the effects of a high salt (HS) diet upon whole kidney O consumption and the metabolomic profiles of normal Sprague Dawley (SD) rats. A separate group of rats was studied to determine changes in the cortex (Cx) and outer medulla (OM) tissue metabolomic and mRNAseq profiles before and following the switch from a 0.

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Pain is common in people with dementia, and pain can exacerbate the behavioural and psychological symptoms of dementia. Effective pain management is challenging, not least in people with dementia. Impairments of cognition, communication and abstract thought can make communicating pain unreliable or impossible.

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