Publications by authors named "Bloom G"

Article Synopsis
  • Alterations in NADH and NADPH metabolism are linked to aging, cancer, and Alzheimer's Disease.
  • Research shows that tau oligomers increase mitochondrial NADPH production through an enzyme called NADK2 in both human neurons and mouse brains.
  • This increase in NADPH contributes to a harmful cycle that enhances the internalization of tau oligomers, leading to increased toxicity in neurons.
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Introduction: Reduced brain energy metabolism, mammalian target of rapamycin (mTOR) dysregulation, and extracellular amyloid beta (Aβ) oligomer (xcAβO) buildup are some well-known Alzheimer's disease (AD) features; how they promote neurodegeneration is poorly understood. We previously reported that xcAβOs inhibit nutrient-induced mitochondrial activity (NiMA) in cultured neurons. We now report NiMA disruption in vivo.

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Grounded in role strain theory, this study explored the dual career experiences of North American female ice hockey players who were also involved in full-time non-sporting work, focusing on factors that produced and reduced their role strain. We interviewed ten professional ice hockey players who held full-time non-sport jobs at the time of their interview. Our reflexive thematic analysis revealed that the multitude of factors leading to role strain among professional female working-athletes were notably significant, spanning societal expectations and environmental complexities.

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Objective: To establish the pharmacokinetics of the cyclin-dependent kinase-9 inhibitor flavopiridol in equine middle carpal joints, using an extended-release poly lactic-co-glycolic acid (PLGA) microparticle formulation.

Animals: 4 healthy horses without evidence of forelimb lameness.

Methods: A 6-week longitudinal pharmacokinetic study was conducted in 2 phases (6 weeks each) in 4 healthy horses.

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We sought to explore the strategies and behaviours employed by University serial winning coaches during seasons of both low performance and a maladaptive team culture. We interviewed seven University team sport coaches and subsequently analyzed the data using a reflexive thematic analysis (RTA). Results indicated that our coaches generally felt unprepared for the unexpected and challenging season, leading to increased stress and decreased psychological well-being.

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Background: Several studies have suggested that spinal anesthesia gives superior outcomes for primary total joint arthroplasty (TJA). However, there is a lack of available data regarding contemporary general anesthesia (GA) approaches for revision TJA utilized at high-volume joint arthroplasty centers.

Methods: We retrospectively reviewed a series of 850 consecutive revision TJAs (405 revision total hip arthroplasties and 445 revision total knee arthroplasties) performed over 4 years at a single institution that uses a contemporary GA protocol and reported on the lengths of stay, early recovery rates, perioperative complications, and readmissions.

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Purpose: This study aimed to develop and psychometrically evaluate a patient-reported outcome measure (PROM), SAlivary, LAcrimal, NaSal (SALANS), to document patients' symptoms after radioactive iodine (RAI) treatment for differentiated thyroid cancer (DTC).

Methods: We generated and iteratively revised SALANS items based on expert input, focus group discussions and feedback from cognitive testing (n = 17). We administered an initial SALANS measure with 39 items to patients diagnosed with DTC in the past two years (n = 105).

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Introduction: Reduced brain energy metabolism, mTOR dysregulation, and extracellular amyloid-β oligomer (xcAβO) buildup characterize AD; how they collectively promote neurodegeneration is poorly understood. We previously reported that xcAβOs inhibit N utrient-induced M itochondrial A ctivity (NiMA) in cultured neurons. We now report NiMA disruption .

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Objectives: To understand community antibiotic practices and their drivers, comprehensively and in contextually sensitive ways, we explored the individual, community and health system-level factors influencing community antibiotic practices in rural West Bengal in India.

Design: Qualitative study using focus group discussions and in-depth interviews.

Setting: Two contrasting village clusters in South 24 Parganas district, West Bengal, India.

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This study explored the experiences and perceptions of coaches, athletes, and integrated support teams towards the management of three Paralympic teams across North America and Europe. Six focus groups with athletes, three interviews with head coaches, and 10 interviews with support team members were conducted and analyzed using a reflexive thematic analysis. Our analysis resulted in three overarching themes to portray the coaches' role and behaviours in managing their (1) athletes, (2) integrated support teams, and (3) team as a collective unit.

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Introduction: Community-based spinal cord injury (SCI) organizations deliver peer mentorship programs in rehabilitation settings. Little is known on how these programs are delivered through the collaboration between community-based SCI organizations and rehabilitation institutions. This study aimed to identify barriers, facilitators, and collaboration processes within a SCI peer mentorship program provided by a community-based organization at a rehabilitation center.

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Health systems are 'the ensemble of all public and private organisations, institutions and resources mandated to improve, maintain or restore health.' The private sector forms a major part of healthcare practice in many health systems providing a wide range of health goods and services, with significant growth across low-income and middle-income countries. WHO sees building stronger and more effective health systems through the participation and engagement of all health stakeholders as the pathway to further reducing the burden of disease and meeting health targets and the Sustainable Development Goals.

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Introduction: Neuronal nuclei are normally smoothly surfaced. In Alzheimer's disease (AD) and other tauopathies, though, they often develop invaginations. We investigated mechanisms and functional consequences of neuronal nuclear invagination in tauopathies.

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Partnering with a provincial coaching association in Canada, we explored the experiences and perceptions of 15 mentor and 29 mentee coaches who participated in a formal virtual parasport coach mentorship program. Data were gathered via focus groups and individual interviews and analyzed using a reflexive thematic analysis. Mentor coaches built a virtual relationship through mutual trust and respect and were perceived by their mentees as supportive, motivating, and knowledgeable.

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Tau was discovered in the mid 1970's as a microtubule-associated protein that stimulates tubulin polymerization, and subsequently was shown to be expressed primarily in neurons, where it is most concentrated in axons. Interest in tau rose by the late 1980's, when it was shown to be the principal subunit of the neurofibrillary tangles (NFTs) that accumulate in Alzheimer's disease (AD) brain, and achieved new heights by the late 1990's, when numerous tau mutations were found to be highly penetrant for AD-related disorders that also are associated with NFTs and came to be known as non-Alzheimer's tauopathies. The role of tau in neurodegeneration is far more complex than whatever effects on neurons may be caused by NFTs, however, and here we review our work on dysregulation of mTOR by tau in AD.

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While historically viewed as an insulin insensitive organ, it is now accepted that insulin has a role in brain physiology. Changes in brain insulin and IGF1 signaling have been associated with neurological diseases, however the molecular factors regulating brain insulin sensitivity remain uncertain. In this study, we proposed that a recently described protein, termed Inceptor, may play a role in brain insulin and IGF1 resistance.

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Article Synopsis
  • Scientists studied how brain cells, called neurons, grow and change over time.
  • They tested different medicines to see how they affected neurons at different stages of development.
  • They found that some medicines were harmful to neurons at both stages, while others had different effects depending on whether the neurons were still growing or more mature.
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In individuals who have sustained maxillofacial trauma, inadequate nutrition is often a sequela and may lead to complications. The purpose of this study was to investigate the association between preoperative laboratory values and postoperative complications in patients with maxillofacial trauma requiring surgical intervention. A retrospective cohort study of patients with maxillofacial trauma requiring surgical repair from 2014 to 2020 was performed at a single academic Level I Trauma Center.

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Introduction: Neuronal nuclei are normally smoothly surfaced. In Alzheimer's disease (AD) and other tauopathies, though, they often develop invaginations. We investigated mechanisms and functional consequences of neuronal nuclear invagination in tauopathies.

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Background: In Alzheimer's disease (AD) brain, neuronal polarity and synaptic connectivity are compromised. A key structure for regulating polarity and functions of neurons is the axon initial segment (AIS), which segregates somatodendritic from axonal proteins and initiates action potentials. Toxic tau species, including extracellular oligomers (xcTauOs), spread tau pathology from neuron to neuron by a prion-like process, but few other cell biological effects of xcTauOs have been described.

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Introduction: Tau phosphorylation at T217 is a promising Alzheimer's disease (AD) biomarker, but its functional consequences were unknown.

Methods: Human brain and cultured mouse neurons were analyzed by immunoblotting and immunofluorescence for total tau, tau , tau , tau , and tau . Direct stochastic optical reconstruction microscopy (dSTORM) super resolution microscopy was used to localize tau in cultured neurons.

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Importance: Counseling prior to thyroid cancer (TC) treatment is an essential component of informed consent. An informed patient affects treatment-related expectations and patient engagement, factors that contribute significantly to patient-reported quality-of-life outcomes.

Objective: To describe experiences with pretreatment counseling among survivors of TC and to test factors associated with self-reported treatment meeting expectations.

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The purpose of this scoping review was to examine how mixed methods research (MMR) has been applied in adapted physical activity (APA) research about children and adolescents age 5-18 years with a disability. Six electronic databases were searched to retrieve relevant studies published between 2003 and 2020. Sixty-four studies were identified and analyzed.

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