Publications by authors named "Donaldson C"

Purpose Of Review: This article discusses a tailored approach to managing cardiogenic shock and temporary mechanical circulatory support (tMCS). We also outline specific mobilization strategies for patients with different tMCS devices and configurations, which can be enabled by this tailored approach to cardiogenic shock management.

Recent Findings: Safe and effective mobilization of patients with cardiogenic shock receiving tMCS can be accomplished.

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Determining lead (Pb) concentrations in new paints using spectroscopic methods such as Inductively Coupled Plasma-Optical Emission Spectroscopy (ICP-OES) requires technical expertise, consumables, equipment for method preparation, and instrumentation that can be cost prohibitive and difficult to maintain in low and middle-income countries (LMICs). Although portable X-ray Fluorescence (pXRF) analyzers are less expensive and simple to operate, their inaccuracy has limited their use to screening for the analysis of Pb in new, dried paint. To determine the limits of pXRF analyzers, new paint samples were purchased, dried, homogenized, and analyzed pXRF and ICP-OES.

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Background: Engaging with the public can influence policy decisions, particularly towards more radical policy change. While established research exists exploring public perceptions on causes of health inequalities, much less exists on how to tackle health inequalities in the UK. Despite an emphasis on 'lived experience', currently no study has focused on how individuals with very poor health conceive of both causes of, and solutions to, health inequalities.

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Background: The public health literature has established a relationship between discrimination, health outcomes, and health and well-being in adolescence. The objective of this study is to add vaping to the existing studies on discrimination and tobacco use among youth. To achieve this objective, the analysis examined the relationship between discrimination, type of discrimination, and current tobacco use, including current vape use, among adolescents in California.

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Introduction: In December 2022, a California law banned the retail sale of most flavored tobacco products (including e-cigarettes). This investigation evaluates adolescents' use of flavored tobacco before and after enactment.

Methods: The Teens Nicotine and Tobacco Project included online surveys of California adolescents (age 12-17) in 2022 (N=5127) and 2023 (N=5015) that assessed past 30-day use of various tobacco products, flavored product use, and perceived access to flavored e-cigarettes.

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Since the discovery of fatty acid hydroxy fatty acids (FAHFAs), significant progress has been made in understanding their regulation, biochemistry, and physiological activities. Here, we contribute to this understanding by revealing that inflammation induces the production of fatty acid hydroxy stearic acids and fatty acid hydroxyoctadecadienoic acids in white adipose tissue depots and in adipocytes cocultured with macrophages. In lipopolysaccharide (LPS)-induced coculture systems, we confirm that adipose triglyceride lipase is required for inflammation-induced FAHFA generation and demonstrate that inflammation is necessary for producing hydroxy fatty acids.

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Background: Recent analysis of the human proteome via proteogenomics and ribosome profiling of the transcriptome revealed the existence of thousands of previously unannotated microprotein-coding small open reading frames (smORFs). Most functional microproteins were chosen for characterization because of their evolutionary conservation. However, one example of a non-conserved immunomodulatory microprotein in mice suggests that strict sequence conservation misses some intriguing microproteins.

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Introduction: Topical anesthesia strabismus surgery is practised in selected surgical situations in the management of adult strabismus. Careful patient selection and patient co-operation throughout the surgery forms the crux of successfully completing the procedure.

Objective: To discuss and identify the scope of topical anesthesia in strabismus surgery based on the current level of evidence.

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Background: Clinical healthcare is not the only way to improve an individual's health. Community-based interventions can have health and wellbeing impacts as well; however, the nature of these interventions, which have public good characteristics, poses challenges for the typical ways in which we value outcomes for use in (health) economic evaluations. The approaches to valuation of these type of interventions should allow for the incorporation of all types of values including option value, externalities and individual use-value.

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Background: People's time is a finite resource and a valuable input that ought to be considered in economic evaluations taking a broad, societal perspective. Yet, evaluations of interventions focusing on children and young people (CYP) rarely account for the opportunity cost of time in this population. As a key reason for this, health economists have pointed to uncertainty around when it is appropriate to include CYP time-related costs in an economic evaluation and highlighted the lack of clear guidance on the topic.

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People on low-incomes in the UK develop multiple long-term health conditions over 10 years earlier than affluent individuals. Financial diaries -new to public health- are used to explore the lived experiences of financially-vulnerable individuals, diagnosed with at least one long-term condition, living in two inner-city London Boroughs. Findings show that the health status of these individuals is a key barrier to work opportunities, undermining their income.

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Article Synopsis
  • Volume overload (VO) is a common issue in ICUs, often leading to negative health outcomes, prompting this study to explore a pharmacist-led initiative to optimize medication diluent volumes.
  • The pilot study was conducted in two phases, comparing fluid balance and medication administration between a pre-implementation group and a post-implementation group in a medical ICU.
  • Although the post-implementation group showed a reduction in antimicrobial diluent volumes, overall fluid balance did not significantly differ between the groups, indicating that optimizing diluent volumes alone may not effectively manage VO, and suggesting the need for broader strategies in future research.
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Background: Pressure ulcers account for a substantial fraction of hospital-acquired pathology, with consequent morbidity and economic cost. Treatments are largely focused on preventing further injury, whereas interventions that facilitate healing remain limited. Intermittent electrical stimulation (IES) increases local blood flow and redistributes pressure from muscle-bone interfaces, thus potentially reducing ulcer progression and facilitating healing.

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Introduction: Electronic cigarettes (also termed e-cigarette or vapes) often contain nicotine, an addictive psychoactive substance, which can have harmful effects during adolescence. Frequent experiences of discrimination are one risk factor shown to increase susceptibility to tobacco use, especially for individuals that identify as a social minority. Applying Intersectionality Theory, this research examined the relationship between youth experiences of discrimination and vape use at the intersection of race/ethnicity and sexual orientation.

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Pancreatic alpha cell activity and glucagon secretion lower as glucose levels increase. While part of the decrease is regulated by glucose itself, paracrine signaling by their neighboring beta and delta cells also plays an important role. Somatostatin from delta cells is an important local inhibitor of alpha cells at high glucose.

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Background: The most commonly used cages for intervertebral disc replacement in lumbar fusion procedures are made predominantly from polyetheretherketone (PEEK). There is sufficient data studying their subsidence and failure rates from a variety of approaches. A novel implant is now available for commercial use, 3D-printed porous titanium (3DppTi) alloy cages, which have recently become available for use in spinal procedures.

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Objectives: Examine the: 1) relative role of hemodynamic determinants of acute kidney injury (AKI) obtained in the immediate postcardiac surgery setting compared with established risk factors, 2) their predictive value, and 3) extent mediation via central venous pressure (CVP) and mean arterial pressure (MAP).

Design: Retrospective observational study. The main outcome of the study was moderate to severe AKI, per kidney disease: improving global outcomes, within 14 days of surgery.

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Background: Exposure to tobacco, e-cigarette, or cannabis marketing is associated with adolescent use. Few studies have examined advertising exposure prevalence and patterns across these products concurrently.

Methods: This study assessed past 30-day recalled exposure to promotional messages about tobacco, e-cigarettes ("vapes" on the survey), and cannabis ("marijuana") from various sources among California adolescents (ages 12-17) in the 2022 Teens, Nicotine, and Tobacco Online Survey ( = 2530).

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Purpose: A transthoracic anterior or lateral approach for giant thoracic disc herniations is a complex operation which requires optimal exposure and maximal visualisation. Traditional metal rigid retractors may inflict significant skin trauma especially with prolonged operative use and limit the working angles of endoscopic instrumentation at depth. We pioneer the use of the Alexis retractor in transthoracic thoracoscopically assisted discectomy for the first time.

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In this perspective paper we use publicly-available data to show that, despite much positive rhetoric in support of reforms in Scotland to integrate health and social care, these reforms, in their current state, have failed to meet their stated objectives. Rather than regress to the previous system, we propose continued evaluation of even more radical forms of such integration. This analysis, and set of future proposals, are timely given current considerations with respect to a National Care Service in Scotland and recent similar reforms in England and in other countries.

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Introduction: The tobacco endgame, policies aiming to end the commercial tobacco epidemic, requires sustained public support, including among youth. We assessed endgame support among California (USA) adolescents, including their reasons and associated participant and policy-specific factors.

Methods: Teens, Nicotine and Tobacco Project online surveys (n=4827) and focus groups were conducted in 2021 and 2022 among California residents aged 12-17 years.

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Objective: The rarity of intracranial extraventricular neurocytomas (EVNs) has precluded accurate definition of its surgical characteristics to date. The authors present the first survival analysis of this unique entity that aims to clarify tumor characteristics, surgical outcomes, and efficacy of postoperative adjuvant therapy.

Methods: A systematic review was conducted in accordance with the Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines.

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Objectives: We aimed to synthesise knowledge on the relative social value of child and adult health.

Methods: Quantitative and qualitative studies that evaluated the willingness of the public to prioritise treatments for children over adults were included. A search to September 2023 was undertaken.

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Article Synopsis
  • Advances in genomics have uncovered thousands of small open reading frames (smORFs) that encode micropeptides or microproteins, which were previously overlooked by traditional methods.
  • CYREN1 is a specific characterizable microprotein that plays a role in regulating double-strand break repair in cells by interacting with the Ku70/80 heterodimer, crucial for DNA repair processes.
  • The study reveals that CYREN1 is intrinsically disordered, allowing it to engage with various proteins, including a new interaction with SF3B1, suggesting a possible scaffolding role that connects DNA repair and splicing processes.
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People's time is a limited resource and, in economic evaluations that adopt a societal perspective, it is important that it is valued and accounted for. Yet, in economic evaluations of interventions for children and young people (CYP), attempts to take into account the opportunity cost of their time are rare. To understand why this is the case, we need to first understand what views health economists hold in relation to CYP time, and what challenges they face in incorporating this in their evaluations.

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