Publications by authors named "Sheehan P"

Energy plays an integral role in New Yorkers' lives. It powers the economy, moves people and goods, keeps homes and workplaces at a livable temperature, and runs critical infrastructure that keeps people healthy and safe. Reliable energy systems are easy to take for granted, but many aspects of these systems are vulnerable to weather and climate hazards.

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Testicular cancer is a rare solid organ tumour associated with high cure rates and young age at diagnosis, hence it has a sizeable cohort of survivors worldwide. As it is one of the earliest tumours to be cured, a lot of studies have highlighted the late side effects of cancer and its different treatment modalities including surgery, radiotherapy and chemotherapy. While we are trying to identify the population at higher risk of platinum based chemotherapy and reduce its exposure, cisplatin based regimes remain an important tool to cure testicular cancer.

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Solar-warmed surface waters subduct beneath Antarctica's ice shelves as a result of wind forcing, but this process is poorly observed and its interannual variability is yet to be assessed. We observe a 50-meter-thick intrusion of warm surface water immediately beneath the Ross Ice Shelf. Temperature in the uppermost 5 meters decreases toward the ice base in near-perfect agreement with an exponential fit, consistent with the loss of heat to the overlying ice.

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Article Synopsis
  • The study aimed to compare perinatal outcomes like maternal Body Mass Index (BMI), macrosomia, and cesarean section rates for first-time mothers with singleton infants, focusing on the influence of the COVID-19 pandemic in Melbourne.
  • It involved a multi-centre analysis of data from nearly 51,000 births between January 2019 and March 2022, looking into changes in these health metrics during the pandemic.
  • While the findings showed some increases in BMI and cesarean sections during the pandemic, the study concluded that these trends were not significantly exacerbated by the pandemic conditions, particularly for those who experienced no labor or inductions.
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Cell-based drug factories could produce therapies on demand inside patients.

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While circadian rhythm disruption may promote neurodegenerative disease, how aging and neurodegenerative pathology impact circadian gene expression patterns in different brain cell types is unknown. Here, we used translating ribosome affinity purification methods to define the circadian translatomes of astrocytes, microglia, and bulk cerebral cortex, in healthy mouse brain and in the settings of amyloid-beta plaque pathology or aging. Our data reveal that glial circadian translatomes are highly cell type-specific and exhibit profound, context-dependent reprogramming of rhythmic transcripts in response to amyloid pathology or aging.

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  • GRN mutations lead to a condition known as FTD-GRN, which causes frontotemporal dementia; PR006 is a new gene therapy aimed at delivering the granulin gene using an adeno-associated virus.
  • In initial studies, PR006 showed effectiveness in improving various pathological conditions related to FTD-GRN in animal models and was generally well tolerated in non-human primates.
  • An ongoing human trial has reported that PR006 was safe for administration with some transient increases in progranulin levels in cerebrospinal fluid, although some patients experienced treatment-related adverse events, such as CSF pleocytosis and deep vein thrombosis.
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Microglia are tissue-resident macrophages and professional phagocytes of the central nervous system (CNS). In development, microglia-mediated phagocytosis is important for sculpting the cellular architecture. This includes the engulfment of dead/dying cells, pruning extranumerary synapses and axons, and phagocytosing fragments of myelin sheaths.

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There is increased recognition that people with lived-experience of mental ill-health ought to be centred in research design, implementation and translation, and quality improvement and program evaluation of services. There is also an increased focus on ways to ensure that co-design processes can be led by people with lived-experience of mental ill-health. Despite this, there remains limited explanation of the physical, social, human, and economic infrastructure needed to create and sustain such models in research and service settings.

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  • - During Melbourne's first pandemic lockdown (2020), twin pregnancies experienced a decrease in preterm births compared to the pre-pandemic period, with fewer spontaneous and iatrogenic births.
  • - The study analyzed twin pregnancies in public hospitals using data from multiple lockdown phases, finding a significant drop in preterm births less than 37 weeks during the first lockdown, while rates in the second lockdown showed an increase in severe preterm births.
  • - Despite lower overall preterm birth rates in the first lockdown, there were no significant changes in stillbirth rates, but the second lockdown period saw an uptick in very early preterm births and neonatal intensive care admissions.
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Circadian rhythm dysfunction is a hallmark of Parkinson disease (PD), and diminished expression of the core clock gene Bmal1 has been described in patients with PD. BMAL1 is required for core circadian clock function but also serves nonrhythmic functions. Germline Bmal1 deletion can cause brain oxidative stress and synapse loss in mice, and it can exacerbate dopaminergic neurodegeneration in response to the toxin MPTP.

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Maintaining a healthy diet is essential for pregnant women and their developing fetuses, including being mindful of caffeine consumption. While consuming caffeine during pregnancy is generally safe, there is a concern among healthcare practitioners about whether it can adversely impact pregnancy. There is a lack of accurate information about the effects of caffeine on fetal development and inadequate education on the risks of excessive caffeine intake during pregnancy.

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Alzheimer's disease, the most common age-related neurodegenerative disease, is characterized by tau aggregation and associated with disrupted circadian rhythms and dampened clock gene expression. REV-ERBα is a core circadian clock protein which also serves as a nuclear receptor and transcriptional repressor involved in lipid metabolism and macrophage function. Global REV-ERBα deletion has been shown to promote microglial activation and mitigate amyloid plaque formation.

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Given recent evidence challenging the replicability of results in the social and behavioral sciences, critical questions have been raised about appropriate measures for determining replication success in comparing effect estimates across studies. At issue is the fact that conclusions about replication success often depend on the measure used for evaluating correspondence in results. Despite the importance of choosing an appropriate measure, there is still no widespread agreement about which measures should be used.

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The circadian clock protein BMAL1 modulates glial activation and amyloid-beta deposition in mice. However, the effects of BMAL1 on other aspects of neurodegenerative pathology are unknown. Here, we show that global post-natal deletion of Bmal1 in mouse tauopathy or alpha-synucleinopathy models unexpectedly suppresses both tau and alpha-synuclein (αSyn) aggregation and related pathology.

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Reliably predicting spontaneous preterm birth remains challenging, therefore it persists as a major contributor to perinatal morbidity and mortality. The use of biomarkers to predict premature cervical shortening, a recognised risk factor for spontaneous preterm birth, is yet to be fully explored in current literature. This study evaluates seven cervicovaginal biochemical biomarkers as possible predictors of premature cervical shortening.

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Local Problem: Central line-associated bloodstream infections (CLABSIs) are associated with increased mortality and costs. In the cardiothoracic ICU (CTICU) of an academic medical center, nine CLABSIs occurred in fiscal year (FY) 2018.

Purpose: The aim of this project was to reduce the CLABSI rate in the CTICU and sustain the results.

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Social media users are often exposed to cute content that evokes emotional reactions and influences them to feel or behave certain ways. The cuteness phenomenon in social media has been scarcely studied despite its prevalence and potential to spread quickly and affect large audiences. The main framework for understanding cuteness and emotions related to cuteness outside of social media is baby schema (having juvenile characteristics), which triggers parental instincts.

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Water is a fundamental molecule in the star and planet formation process, essential for catalysing the growth of solid material and the formation of planetesimals within disks. However, the water snowline and the HDO:HO ratio within proto-planetary disks have not been well characterized because water only sublimates at roughly 160 K (ref. ), meaning that most water is frozen out onto dust grains and that the water snowline radii are less than 10 AU (astronomical units).

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Expectancy-value theory of motivation (EVT) suggests that student values influence their likelihood of putting in the effort required to learn, and these values can be shaped by student characteristics, such as their experiences, sociodemographics, and disciplinary norms. To understand the extent to which these characteristics relate to students' values, we surveyed 1162 graduating science, technology, engineering, and mathematics (STEM) students across four universities using the previously developed and validated Survey of Teaching Beliefs and Practices for Undergraduates (STEP-U). The STEP-U survey included Likert questions to capture students' values of 27 cross-disciplinary skills and the frequency with which they experienced 27 instructional methods thought to develop particular skills.

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Article Synopsis
  • Preterm birth (PTB) is a major global issue, linked to risk factors like a shortened cervix and amniotic fluid sludge (AFS), which could indicate inflammation or infection.
  • The study aimed to evaluate whether administering azithromycin to women with a shortened cervix would extend their pregnancy duration and improve outcomes for newborns.
  • Findings revealed that women treated with azithromycin had a higher adjusted risk of PTB compared to those not treated, suggesting that routine use of this antibiotic in such cases may not be beneficial.
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Background: COVID-19 infection in pregnancy is associated with a higher risk of progression to severe disease, but vaccine uptake by pregnant women is hindered by persistent safety concerns. COVID-19 vaccination in pregnancy has been shown to reduce stillbirth, but its relationship with preterm birth is uncertain.

Objective: This study aimed to measure the rate of COVID-19 vaccine uptake among women giving birth in Melbourne, Australia, and to compare perinatal outcomes by vaccination status.

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