Introduction: Acute and late inflammatory markers including high-sensitivity C-reactive protein (hsCRP) and interleukin-6 (IL-6) are associated with future vascular events after stroke. However, few longitudinal studies exist examining the intra-individual reproducibility of inflammatory biomarker measures at different timepoints after atherosclerotic stroke. We sought to examine the reproducibility of hsCRP and IL-6 in a cohort of patients with minor stroke or transient ischaemic attack (TIA) caused by ipsilateral carotid atherosclerosis.
View Article and Find Full Text PDFIntroduction: HCV antibody assays have been used to screen for HCV, but confirmation of acute infection is dependent on RNA or core antigen testing. The aim of the study was to compare the performance of five HCV test methods, including RNA testing, on a US emergency department population.
Methods: Clinical performance metrics were calculated on 708 consenting Johns Hopkins Emergency Department patients who self-reported an increased risk for HCV infection.
Acta Crystallogr D Struct Biol
May 2024
The Swiss Light Source facilitates fragment-based drug-discovery campaigns for academic and industrial users through the Fast Fragment and Compound Screening (FFCS) software suite. This framework is further enriched by the option to utilize the Smart Digital User (SDU) software for automated data collection across the PXI, PXII and PXIII beamlines. In this work, the newly developed HEIDI webpage (https://heidi.
View Article and Find Full Text PDFAll widely used mRNA vaccines against COVID-19 contain in their sequence 1-methylpseudouridine (m1Ψ) instead of uridine. In this publication, we report two high resolution crystal structures (at up to 1.01 and 1.
View Article and Find Full Text PDFFixed targets are a popular form of sample-delivery system used in serial crystallography at synchrotron and X-ray free-electron laser sources. They offer a wide range of sample-preparation options and are generally easy to use. The supports are typically made from silicon, quartz or polymer.
View Article and Find Full Text PDFRecent advances in automation have fostered the development of unattended data collection services at a handful of synchrotron facilities worldwide. At the Swiss Light Source, the installation of new high-throughput sample changers at all three macromolecular crystallography beamlines and the commissioning of the Fast Fragment and Compound Screening pipeline created a unique opportunity to automate data acquisition. Here, the DA+ microservice software stack upgrades, implementation of an automatic loop-centering service and deployment of the Smart Digital User (SDU) software for unattended data collection are reported.
View Article and Find Full Text PDFBackground: Evidence suggests that Aboriginal babies in Western Australia are not receiving adequate primary health care in their first 3 months of life, leading to questions about enablers and constraints to delivering such care. This paper presents findings from a qualitative research project investigating health providers' perceptions and experiences of best and current practice in discharge planning, postnatal care and health education for Aboriginal mothers and their newborn babies.
Methods: Constructivist grounded theory guided this research involving 58 semi-structured interviews conducted with health providers who deliver care to Aboriginal mothers and infants.
Aim: Posthumous electronic healthcare data (PHCD) are ubiquitous and increasing in volume. Despite their potential utility and value, no empirically-derived, publicly-generated information exists to guide what uses society may view as acceptable. This study explores the attitude and perceptions of Aotearoa New Zealanders to PHCD utilisation.
View Article and Find Full Text PDFBackground: Background Population-based data on SARS-CoV-2 infection in pregnancy and assessment of passive immunity to the neonate, is lacking. We profiled the maternal and fetal response using a combination of viral RNA from naso-pharyngeal swabs and serological assessment of antibodies against SARS-CoV-2.
Methods: This multicentre prospective observational study was conducted between March 24th and August 31st 2020.
Objective: To explore rural nurse experiences of ethical issues and their management of these as a first step in a programme of work to address rural nurses' ethical needs.
Design: This study was qualitative, using mixed qualitative techniques to gather data, which was analysed using a general inductive approach.
Setting: Primary health care in 2 regions of Aotearoa New Zealand.
Organic synthesis underpins the evolution of weak fragment hits into potent lead compounds. Deficiencies within current screening collections often result in the requirement of significant synthetic investment to enable multidirectional fragment growth, limiting the efficiency of the hit evolution process. Diversity-oriented synthesis (DOS)-derived fragment libraries are constructed in an efficient and modular fashion and thus are well-suited to address this challenge.
View Article and Find Full Text PDFVaccines against SARS-CoV-2 are likely to be critical in the management of the ongoing pandemic. A number of candidates are in Phase III human clinical trials, including ChAdOx1 nCoV-19 (AZD1222), a replication-deficient chimpanzee adenovirus-vectored vaccine candidate. In preclinical trials, the efficacy of ChAdOx1 nCoV-19 against SARS-CoV-2 challenge was evaluated in a ferret model of infection.
View Article and Find Full Text PDFThis structural and biophysical study exploited a method of perdeuterating hen egg-white lysozyme based on the expression of insoluble protein in followed by in-column chemical refolding. This allowed detailed comparisons with perdeuterated lysozyme produced in the yeast , as well as with unlabelled lysozyme. Both perdeuterated variants exhibit reduced thermal stability and enzymatic activity in comparison with hydrogenated lysozyme.
View Article and Find Full Text PDFBackground: Troponin is a widely used cardiac protein biomarker for acute coronary syndrome. Its increasing importance drives an increasing need to assess, in real-world conditions, the performance of the tests to measure it. We evaluated the performance characteristics of high-sensitivity troponin I assay reagents and ancillary agents on the Abbott ARCHITECT ci4100, ARCHITECT i2000SR and Alinity ci using historical quality control data spanning 5 years.
View Article and Find Full Text PDFInt J Environ Res Public Health
October 2020
High concentrations of trihalomethanes (THMs) in public water supplies potentially pose a health hazard, but exposure assessment remains a complex task. To interpret research findings and monitoring data for THMs, it is important to evaluate spatial and temporal variations in both total THM and the individual constituent compounds (including brominated species). We therefore aimed to determine the concentrations, and spatial and temporal variability of concentrations, of THMs public water supplies in Perth, Western Australia, which is known historically to have high brominated THM concentrations.
View Article and Find Full Text PDFPrion diseases, a group of incurable, lethal neurodegenerative disorders of mammals including humans, are caused by prions, assemblies of misfolded host prion protein (PrP). A single point mutation (G127V) in human PrP prevents prion disease, however the structural basis for its protective effect remains unknown. Here we show that the mutation alters and constrains the PrP backbone conformation preceding the PrP β-sheet, stabilising PrP dimer interactions by increasing intermolecular hydrogen bonding.
View Article and Find Full Text PDFINTRODUCTION Chronic obstructive pulmonary disease (COPD) is a common chronic condition managed in primary care. AIM To understand how patients with severe COPD living in the Southern Health Region (Otago and Southland) experience and cope with the condition. METHODS Semi-structured interviews were undertaken with 23 patients with severe COPD (defined using the 2013 GOLD classification).
View Article and Find Full Text PDFObjective: To explore caregiver perspectives of their children's journey through the specialist paediatric service, the Aboriginal Ambulatory Care Coordination Program (AACC), and non-AACC services at the Perth Children's Hospital.
Methods: Eighteen semi-structured interviews with families of Aboriginal children were completed. Indigenous research methodology and a phenomenological approach guided data collection and analysis.
We examined health care utilisation and needs of people with severe COPD in the low-population-density setting of the Southern Region of New Zealand (NZ). We undertook a retrospective case note review of patients with COPD coded as having an emergency department attendance and/or admission with at least one acute exacerbation during 2015 to hospitals in the Southern Region of NZ. Data were collected and analysed from 340 case notes pertaining to: demographics, hospital admissions, outpatient contacts, pulmonary rehabilitation, advance care planning and comorbidities.
View Article and Find Full Text PDFBackground: The Australian Early Development Census (AEDC) provides a measure of early child development upon school entry. Understanding which combination of factors influences Aboriginal child neurodevelopment is important to inform policy and practice.
Objective: The primary objective was to use latent class analysis (LCA) to model AEDC profiles and identify the highest need profiles.
Objectives: Chronic obstructive pulmonary disease (COPD) is a common chronic disease with significant morbidity and mortality, particularly for Māori, which places a large burden on the New Zealand (NZ) health system. We undertook a qualitative study as part of a mixed-methods implementation research project which aimed to determine the barriers and enablers to the provision of accessible high-quality COPD care.
Setting: Southern Health Region of NZ (Otago and Southland).
Background: Botulism is a rare and potentially fatal paralytic disease caused by botulinum neurotoxin (BoNT). In April 2017, 4 California residents from 2 adjacent counties were hospitalized with suspected foodborne botulism, precipitating an investigation by state and local public health departments in California.
Methods: We interviewed suspected botulism patients and their families, inspected the suspect establishment, and collected suspect food.
Aim: To systematically review the effectiveness of education and/or training for traditional (informal) and formal health service providers in infant male circumcision on morbidity or mortality outcomes.
Methods: We searched Cochrane Central Register of Controlled Trials, MEDLINE, EMBASE, CINAHL, Global Health, Cochrane Database of Systematic Reviews and Database of Abstracts of Reviews of Effects and clinical trial registries in all languages from January 1985 to June 2018. Our primary outcomes were all-cause morbidity and all-cause mortality.
Background: Anemia rates are over 60% in disadvantaged children yet there is little information about the quality of anemia care for disadvantaged children.
Methods: Our primary objective was to assess the burden and quality of anemia care for disadvantaged children and to determine how this varied by age and geographic location. We implemented a cross-sectional study using clinical audit data from 2287 Indigenous children aged 6-59 months attending 109 primary health care centers between 2012 and 2014.