710 results match your criteria: "Basil Hetzel Institute[Affiliation]"

Article Synopsis
  • Individuals at ultra-high risk (UHR) for psychosis with persistent attenuated psychotic symptoms (APS) show worse clinical and functional outcomes compared to those who remit, closely resembling individuals who transition to psychosis.
  • After an initial period, the symptom and functioning trajectories for those with persistent APS diverge quickly from those who remit.
  • Prediction of non-remission improves significantly with longitudinal data (6-month follow-up) rather than relying on baseline data alone, indicating the need for consistent monitoring and intervention for UHR individuals with persistent APS.
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Gold nanoparticles (AuNPs) have shown promise for applications in the diagnosis and treatment of different diseases, including cancer. Understanding the effect of AuNPs on metabolic reprogramming in cancer cells at the single cell level is of high importance for improving the efficacy and safety. Fluorescence lifetime imaging microscopy (FLIM) of nicotinamide adenine dinucleotide (phosphate) hydrogen (NAD(P)H) as a main metabolic cofactor and an indicator of metabolic reprogramming in cancer cells enables real-time monitoring of cancer cell metabolism in response to different treatments, including AuNPs.

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Nontuberculous mycobacteria (NTM) are among the recalcitrant bacterial strains that cause difficult-to-treat infections for patients with chronic underlying pulmonary conditions. The bacteria's intrinsic resistance to various antibiotics and their ability to infect macrophages enable them to overcome both the host immune response and standard antibiotics. Unconventional approaches to treating NTM-mediated infections are required.

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Purpose: Typical clinical "in use" conditions for topical semisolids involve their application as a thin film, often with rubbing that can induce metamorphic stress. Yet, product quality and performance tests often characterize the manufactured product, and may not consider product metamorphosis (e.g.

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Enhancing non-viral DNA delivery systems: Recent advances in improving efficiency and target specificity.

J Control Release

December 2024

Clinical and Health Sciences, Centre for Pharmaceutical Innovation, University of South Australia, Adelaide, SA 5000, Australia. Electronic address:

DNA-based therapies are often limited by challenges such as stability, long-term integration, low transfection efficiency, and insufficient targeted DNA delivery. This review focuses on recent progress in the design of non-viral delivery systems for enhancing targeted DNA delivery and modulation of therapeutic efficiency. Cellular uptake and intracellular trafficking mechanisms play a crucial role in optimizing gene delivery efficiency.

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Background: As the world's population ages, there is a growing concern with frailty, marked by reduced strength and greater vulnerability to stress. Overcoming obstacles like reluctance towards screening methods in this process is crucial for identifying and addressing frailty at an early stage. Understanding older people's perspectives can help adapt screening procedures in primary healthcare settings.

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Background And Aims: Functional gastrointestinal disorders (FGIDs) impact quality of life and represent a significant burden on healthcare services. Guidelines recommend an early, positive diagnosis to reduce harmful over-investigation in FGID patients. The aim of this multicentre study was to evaluate FGID management against current guidelines.

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phage therapy candidates from Sphae: An automated toolkit for predicting sequencing data.

bioRxiv

November 2024

Flinders Accelerator for Microbiome Exploration, College of Science and Engineering, Flinders University, Adelaide, SA, 5042, Australia.

Motivation: Phage therapy is a viable alternative for treating bacterial infections amidst the escalating threat of antimicrobial resistance. However, the therapeutic success of phage therapy depends on selecting safe and effective phage candidates. While experimental methods focus on isolating phages and determining their lifecycle and host range, comprehensive genomic screening is critical to identify markers that indicate potential risks, such as toxins, antimicrobial resistance, or temperate lifecycle traits.

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Alternate Sampling Matrices for Therapeutic Drug Monitoring of Immunosuppressants.

Ther Drug Monit

November 2024

Department of Clinical Pharmacology, The Basil Hetzel Institute for Translational Health Research, The Queen Elizabeth Hospital, Woodville South, SA, Australia; and.

Background: Immunosuppressant (IS) therapeutic drug monitoring (TDM) relies on measuring mostly pharmacologically inactive erythrocyte-bound and/or plasma protein-bound drug levels. Variations in hematocrit and plasma protein levels complicate interpretation of blood calcineurin inhibitor (CNI) and inhibitors of the molecular target of rapamycin (mTORi) concentrations. Variable binding of mycophenolic acid (MPA) to albumin similarly complicates its TDM in plasma.

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Conservative management of patients with end-stage chronic limb-threatening ischaemia in the community.

Aust J Gen Pract

November 2024

MBBS, MSc, FRACS, Professor of Vascular Surgery, Central Adelaide Local Health Network, Adelaide SA; Professor of Vascular Surgery, Adelaide Medical School, Faculty of Health and Medical Sciences, The University of Adelaide, Adelaide, SA; Professor of Vascular Surgery, Basil Hetzel Institute of Translational Health Research, Adelaide, SA.

Background: Chronic limb-threatening ischaemia (CLTI) is an advanced and severe form of lower limb peripheral arterial disease (PAD) and can pose significant challenges in clinical management. Not all patients are able to undergo surgical intervention due to patient-related and disease-related factors.

Objective: This review article aims to provide general practitioners with an overview of conservative management of patients with end-stage CLTI in the community.

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Evaluation of mucosal barrier disruption due to Staphylococcus lugdunensis and Staphylococcus epidermidis exoproteins in patients with chronic rhinosinusitis.

Int Forum Allergy Rhinol

November 2024

Department of Surgery-Otolaryngology, Head and Neck Surgery, Central Adelaide Local Health Network (Basil Hetzel Institute), The Queen Elizabeth Hospital, University of Adelaide, Adelaide, South Australia, Australia.

Background: Chronic rhinosinusitis (CRS) is a persistent inflammatory condition of the sinus mucosa. While Staphylococcus aureus has been shown to play a significant role in mucosal barrier disruption in CRS patients, coagulase-negative staphylococci (CoNS) such as Staphylococcus epidermidis and Staphylococcus lugdunensis are also implicated in CRS pathophysiology. This study investigates the effects of exoproteins secreted by planktonic and biofilm forms of clinical isolates of S.

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Article Synopsis
  • * Analysis of different sample types (saliva and oral rinse) showed lower microbial diversity in HNC saliva compared to healthy samples, with varying results based on the sequencing method used.
  • * Despite challenges with 16S rRNA sequencing, the study found effective models for distinguishing HNC using specific saliva and oral rinse samples, emphasizing the importance of consistent methodology for accurate interpretations.
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Background: The association between cardiovascular disease and carcinogenesis is bidirectional and well-established. Furthermore, cancer treatment improves overall patient survival, potentially at the cost of incremental and fatal cardiovascular disease (CVD).

Aim: To evaluate (a) In a real-world cohort, the proportion of patients offered cancer chemotherapy who have antecedent CVD (CVD); (b) The rates of patient admission with subsequent development of CVD (CVD) requiring hospital admission post assignment to chemotherapy; (c) The impact of CVD and CVD on mortality rates relative to those seen in patients without overt CVD (CVD) and (d) The time course of mortality in CVD versus CVD patients.

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Article Synopsis
  • The study investigates the significance of cardiac troponin (cTn) levels in predicting mortality in patients with Takotsubo syndrome (TTS), analyzing data from the International Takotsubo Registry.
  • It identifies that a cTn increase greater than 28.8 times the upper reference limit signals clinically relevant myocardial injury, correlating with a higher risk of mortality over 5 years (adjusted HR 1.58).
  • The findings enhance understanding of patient risk profiles in TTS, emphasizing the need for increased monitoring and follow-up for those with significant troponin elevations.
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Article Synopsis
  • - The study examines how varying microvascular resistance affects fractional flow reserve (FFR) and hyperaemic stenosis resistance (hSR), which are crucial for making medical decisions regarding stenosis severity.
  • - Researchers conducted tests simulating the coronary flow circuit at different degrees of stenosis and downstream resistance, finding that FFR increases with higher microvascular resistance while hSR remains steady.
  • - The findings suggest that high downstream resistance can lead to misinterpretation of stenosis severity, as an 84% stenosis could yield a misleading FFR value over 0.8, highlighting the need to factor in microvascular resistance when assessing stenosis significance.
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Frailty in general medicine patients receiving geriatric medicine liaison services is predictive of adverse outcomes.

Australas J Ageing

October 2024

Adelaide Geriatrics Training and Research with Aged Care (GTRAC) Centre, Faculty of Health and Medical Sciences, Adelaide Medical School, University of Adelaide, Adelaide, South Australia, Australia.

Introduction: Frailty is in an increasing focus for acute care systems due to its association with adverse health outcomes. The Clinical Frailty Scale (CFS) is a judgement-based frailty assessment tool, which classifies the frailty status of older adults, but more research involving general medicine inpatients is necessary. The objectives of this study were to describe the predictive ability of CFS, administered by geriatric medicine trained nurses, for adverse outcomes including the following: acute unit and total length of stay (LOS), new nursing home (NH) admission, 12-month mortality and readmission within 30-day.

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Nonlinear biomechanical behaviour of extracranial carotid artery aneurysms in the framework of Windkessel effect via FSI technique.

J Mech Behav Biomed Mater

December 2024

Vascular and Endovascular Service, Royal Adelaide Hospital, Adelaide, Australia; Discipline of Surgery, University of Adelaide, Adelaide, Australia; Basil Hetzel Institute for Translational Health Research, The Queen Elizabeth Hospital, Adelaide, Australia.

Extracranial carotid artery aneurysms (ECCA) lead to rupture and neurologic symptoms from embolisation, with potentially fatal outcomes. Investigating the biomechanical behaviour of EECA with blood flow dynamics is crucial for identifying regions more susceptible to rupture. A coupled three-dimensional (3D) Windkessel-framework and hyperelastic fluid-structure interaction (FSI) analysis of ECCAs with patient-specific geometries, was developed in this paper with a particular focus on hemodynamic parameters and the arterial wall's biomechanical response.

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Impact of Different Packaging Configurations on A Topical Cream Product.

Pharm Res

October 2024

Therapeutics Research Centre, Frazer Institute, Faculty of Medicine, The University of Queensland, Brisbane, Australia.

Purpose: The objective of this study was to investigate whether different dispensing processes can alter the physicochemical and structural (Q3) attributes of a topical cream product, and potentially alter its performance.

Methods: Acyclovir cream, 5% (Zovirax®) is sold in the UK and other countries in a tube and a pump packaging configurations. The structural attributes of the cream dispensed from each packaging configuration were analyzed by optical microscopy, confocal Raman microscopy and cryo-scanning electron microscopy.

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The optic nerve sheath is a rare site for schwannoma, to our knowledge 19 optic nerve sheath schwannoma (ONSS) cases have been reported. Difficulty can arise in diagnosis as imaging findings can be relatively non-specific. We describe a case of ONSS that mimicked orbital cavernous venous malformation pre-operatively.

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Background: Healthcare utilization for patients with peripheral artery disease (PAD) is high, but stratifying patients' risk of hospitalization at initial evaluation is challenging. We examined the association between health status at PAD presentation and risk of (1) combined all-cause hospital admissions and emergency department (ED) visits and (2) all-cause hospital admissions.

Methods: Patients with claudication enrolled at US sites in the PORTRAIT registry were included.

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Article Synopsis
  • * Approximately 17.4% of residents used at least one strong anticholinergic medication, with significant variation across countries (from 1.3% in China to 27.1% in Italy).
  • * The findings indicated higher usage among residents with cognitive impairment and those classified as most frail, suggesting the need for targeted deprescribing to minimize medication-related risks.
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: The coronary slow flow phenomenon (CSFP) is an angiographic finding characterised by the delayed passage of contrast through the coronary arteries, despite the absence of obstructive coronary artery disease (defined as less than 50% narrowing of the vessel lumen). Patients with the CSFP experience recurrent angina, for which there are limited evidence-based therapies. Ticagrelor may serve as an effective anti-anginal therapy for these patients by increasing adenosine levels, which could alleviate coronary microvascular dysfunction and its associated angina due to its vasodilatory properties.

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Prognostic accuracy of eight frailty instruments for all-cause mortality in Australian primary care.

Arch Gerontol Geriatr

January 2025

Caring Futures Institute, College of Nursing and Health Sciences, Flinders University, Adelaide, Australia; Adelaide Primary Health Network, Adelaide, Australia.

Aim: To investigate the ability of eight frailty instruments to accurately predict all-cause mortality and other adverse outcomes in Australian primary care patients.

Methods: Study participants included adults aged ≥75 years attending one of three primary care clinics in South Australia. Frailty instruments studied were Fried's frailty phenotype (FFP), the Frailty Index (FI) of cumulative deficits, Kihon Checklist (KCL), the Fatigue Resistance Ambulation Illness and Loss of weight (FRAIL) scale, Groningen Frailty Indicator (GFI), PRISMA-7, Reported Edmonton Frail Scale (REFS), and gait speed.

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