Publications by authors named "Howlett M"

Article Synopsis
  • Lymphatic filariasis (LF) is a serious neglected tropical disease that requires improved surveillance methods, and molecular xenomonitoring (MX) could help track the disease by detecting its DNA in mosquitoes.
  • A study in Samoa compared the prevalence of microfilaraemia (Mf) in humans with the presence of PCR-positive mosquitoes in different communities.
  • The results showed a correlation between the number of positive mosquitoes and human Mf prevalence, particularly with the mosquito species Aedes polynesiensis, indicating that MX could be a valuable tool in monitoring LF.
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  • The study focuses on improving vascular access for patients needing frequent apheresis by transitioning from a Vortex dual lumen port to a combination of a Powerflow port and a ClearVUE port.
  • Results showed that the new port configuration significantly reduced treatment time (from 91.18 min to 77.96 min) and increased flow rates (from 61.59 mL/min to 71.89 mL/min).
  • Additionally, the need for tissue plasminogen activator (tPA) was almost eliminated among those switched from the Vortex ports, indicating potential cost savings and improved efficiency in apheresis procedures.
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  • The study evaluated the Q Filariasis Antigen Test (QFAT) against the current Filariasis Test Strip (FTS) for detecting Wuchereria bancrofti, the parasite causing lymphatic filariasis, in field surveys conducted in Samoa.
  • Results showed that both tests had similar Ag-positivity rates (29.0% for FTS and 30.2% for QFAT) with a high concordance of 93.6%.
  • The QFAT was preferred by the field team for its ease of use, smaller blood volume requirement, and better readability, indicating it could be an effective alternative for LF monitoring.
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Background: Lymphatic filariasis (LF) remains a significant global issue. To eliminate LF as a public health problem, the World Health Organization (WHO) recommends multiple rounds of mass drug administration (MDA). In certain scenarios, including when elimination targets have not been met with two-drug MDA, triple-drug MDA (using ivermectin, diethylcarbamazine and albendazole) is recommended.

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We report chemically fueled oscillations of vesicles. The population cycling of vesicles is driven by their self-reproduction and collapse within a biphasic reaction network involving the interplay of molecular and supramolecular events. We studied the oscillations on the molecular and supramolecular scales and tracked vesicle populations in time by interferometric scattering microscopy and dynamic light scattering.

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Background: Patients in intensive care units (ICUs) are susceptible to medication errors (MEs) for many reasons, including the complexity and intensity of care. Little is known about patient safety culture, its relationship to medication safety, and ME prevention strategies used in ICUs. This study explored the attitudes of healthcare professionals (HCPs) working in ICUs or within medication safety towards patient safety culture, medication safety, and factors influencing implementation of ME prevention strategies in ICUs across Europe.

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Background: Just in Time (JIT) and Lean manufacturing are concepts that originated in the automotive industry and were then adopted by pharmaceutical and biopharmaceutical companies during the 1990s. However, the Covid-19 pandemic and the urgent demand for pharmaceutical treatment challenged JIT and Lean manufacturing processes. Production of Covid-19-related medicines increased, putting pressure on global supply chains and operations.

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Objectives: Medication errors (MEs) are a leading cause of morbidity and mortality in the healthcare system. Patients admitted to intensive care units (ICUs) are potentially more susceptible to MEs due to severity of illness, the complexity of treatments they receive and the challenging nature of the ICU setting. The European Association of Hospital Pharmacists established a Special Interest Group (SIG) to undertake a programme of work to develop and prioritise recommendations to support medication safety improvement in ICUs across Europe.

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Background: Adolescents and young adults (AYAs; ages 15-29 years) diagnosed with cancer are increasingly recognized as an oncology population with distinct psychosocial needs. However, few specialized psychosocial interventions for AYAs currently exist. This study reports on the development of a novel group-based psychotherapy intervention to address the psychosocial needs of AYAs.

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Background: Standard concentration infusions and 'smart-pumps' are recognised as best practice in the paediatric setting. Implementation rates in European hospitals remain low. Children's Health Ireland (CHI) developed a paediatric 'smart-pump' drug library using standardised concentrations.

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In Nyx mice, a model for congenital nystagmus associated with congenital stationary night blindness (CSNB), synchronous oscillating retinal ganglion cells (RGCs) lead to oscillatory eye movements, i.e. nystagmus.

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Studying autocatalysis - in which molecules catalyse their own formation - might help to explain the emergence of chemical systems that exhibit traits normally associated with biology. When coupled to other processes, autocatalysis can lead to complex systems-level behaviour in apparently simple mixtures. Lipids are an important class of chemicals that appear simple in isolation, but collectively show complex supramolecular and mesoscale dynamics.

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Congenital nystagmus is a condition where the eyes of patients oscillate, mostly horizontally, with a frequency of between 2 and 10 Hz. Historically, nystagmus is believed to be caused by a maladaptation of the oculomotor system and is thus considered a disease of the brain stem. However, we have recently shown that congenital nystagmus associated with congenital stationary night blindness is caused by synchronously oscillating retinal ganglion cells.

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Article Synopsis
  • Diffuse midline gliomas (DMG), particularly diffuse intrinsic pontine gliomas (DIPG), are highly lethal childhood cancers, with palliative radiotherapy offering limited survival benefits of 9-11 months.
  • ONC201, a drug that targets certain pathways in cancer cells, has shown potential effectiveness against DMG, but further research is needed to understand how different genetic mutations affect its response.
  • Studies indicate that DIPGs with PIK3CA mutations are more sensitive to ONC201, while those with TP53 mutations are resistant; combining ONC201 with the drug paxalisib can enhance treatment effectiveness by overcoming metabolic adaptations linked to these mutations.
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Diffuse midline gliomas (DMG), including diffuse intrinsic pontine gliomas (DIPGs), are the most lethal of childhood cancers. Palliative radiotherapy is the only established treatment, with median patient survival of 9-11 months. ONC201 is a DRD2 antagonist and ClpP agonist that has shown preclinical and emerging clinical efficacy in DMG.

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Introduction: Ependymomas (EPN) are the third most common malignant brain cancer in children. Treatment strategies for pediatric EPN have remained unchanged over recent decades, with 10-year survival rates stagnating at just 67% for children aged 0-14 years. Moreover, a proportion of patients who survive treatment often suffer long-term neurological side effects as a result of therapy.

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Purpose: Point-of-care ultrasonography (POCUS) is an established tool in the management of hypotensive patients in the emergency department (ED). We compared the diagnostic accuracy of a POCUS protocol versus standard assessment without POCUS in patients with undifferentiated hypotension.

Methods: This was an international, multicenter randomized controlled trial included three EDs in North America and three in South Africa from September 2012 to December 2016.

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Article Synopsis
  • Avoidable medication-related harm is a widespread issue in healthcare, and while smart infusion pumps and data monitoring can help reduce these risks, their high costs and poor implementation present significant challenges.
  • To address these issues, a symposium of medication safety experts proposed strategic recommendations, including standardizing infusion concentrations and creating user-friendly drug libraries based on real-world practices.
  • The overall goal is to foster collaboration among all stakeholders, ensuring that new technology improves safety and efficiency in medication administration while being cost-effective.
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For many social science scholars, the COVID-19 pandemic has forced us to re-think our approaches to research. As a result of new social distancing measures, those of us who conduct in-person qualitative and ethnographic research have faced significant challenges in accessing the populations and fields we study. Technology served as an incredibly useful tool for social interaction and research prior to the pandemic, and it has since become even more important as a way to engage with others.

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A key goal of chemistry is to develop synthetic systems that mimic biology, such as self-assembling, self-replicating models of minimal life forms. Oscillations are often observed in complex biological networks, but oscillating, self-replicating species are unknown, and how to control autonomous supramolecular-level oscillating systems is also not yet established. Here we show how a population of self-assembling self-replicators can autonomously oscillate, so that simple micellar species repeatedly appear and disappear in time.

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Background And Purpose: The prognosis of rapid onset functional tic-like behaviors (FTLBs) is unknown. This prospective cohort study describes the course and treatment of rapid onset FTLBs in adolescents (n = 20) and adults (n = 9) previously reported in two case series.

Methods: Yale Global Tic Severity Scale (YGTSS) scores were compared between first clinical presentation and 6-month follow-up assessment.

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Patients with congenital nystagmus, involuntary eye movements, often have a reduced visual acuity. Some of these patients have a retinal-specific mutation in the protein nyctalopin, which is also present in the mouse. In these mice, retinal ganglion cells (RGCs) have oscillatory activity, which leads to expanded axonal projections towards the dLGN and consequently to a desegregation of retinal projections to the brain.

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Medulloblastoma is the most common childhood brain cancer. Mainstay treatments of radiation and chemotherapy have not changed in decades and new treatment approaches are crucial for the improvement of clinical outcomes. To date, immunotherapies for medulloblastoma have been unsuccessful, and studies investigating the immune microenvironment of the disease and the impact of current therapies are limited.

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