469,027 results match your criteria: "Massachusetts; and Simon Fraser University Faculty of Health Sciences[Affiliation]"

Measuring the effects of motion corruption in fetal fMRI.

Hum Brain Mapp

February 2025

Computational Imaging Research Lab, Department of Biomedical Imaging and Image-Guided Therapy, Medical University of Vienna, Vienna, Austria.

Irregular and unpredictable fetal movement is the most common cause of artifacts in in utero functional magnetic resonance imaging (fMRI), affecting analysis and limiting our understanding of early functional brain development. The accurate detection of corrupted functional connectivity (FC) resulting from motion artifacts or preprocessing, instead of neural activity, is a prerequisite for reliable and valid analysis of FC and early brain development. Approaches to address this problem in adult data are of limited utility in fetal fMRI.

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Ultrahigh Specific Strength by Bayesian Optimization of Carbon Nanolattices.

Adv Mater

January 2025

Department of Mechanical & Industrial Engineering, University of Toronto, 5 King's College Road, Toronto, M5S 3G8, Canada.

Nanoarchitected materials are at the frontier of metamaterial design and have set the benchmark for mechanical performance in several contemporary applications. However, traditional nanoarchitected designs with conventional topologies exhibit poor stress distributions and induce premature nodal failure. Here, using multi-objective Bayesian optimization and two-photon polymerization, optimized carbon nanolattices with an exceptional specific strength of 2.

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Osteoarthritis (OA) shows various clinical manifestations depending on the status of its joint components. We aimed to identify the synovial cell subsets responsible for OA pathophysiology by comprehensive analyses of human synovium samples in single-cell resolution. Two distinct OA synovial tissue groups were classified by gene expression profiles in RNA-Seq: inflammatory and fibrotic.

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Diabetes mellitus can cause impaired and delayed wound healing, leading to lower extremity amputations; however, the mechanisms underlying the regulation of vascular endothelial growth factor-dependent (VEGF-dependent) angiogenesis remain unclear. In our study, the molecular underpinnings of endothelial dysfunction in diabetes are investigated, focusing on the roles of disabled-2 (Dab2) and Forkhead box M1 (FOXM1) in VEGF receptor 2 (VEGFR2) signaling and endothelial cell function. Bulk RNA-sequencing analysis identified significant downregulation of Dab2 in high-glucose-treated primary mouse skin endothelial cells.

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Spatial transcriptomics (ST) offers enormous potential to decipher the biological and pathological heterogeneity in precious archival cancer tissues. Traditionally, these tissues have rarely been used and only examined at a low throughput, most commonly by histopathological staining. ST adds thousands of times as many molecular features to histopathological images, but critical technical issues and limitations require more assessment of how ST performs on fixed archival tissues.

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Mature aggressive B-cell lymphomas, such as Burkitt lymphoma (BL) and Diffuse large B-cell lymphoma (DLBCL), show variations in microRNA (miRNA) expression. The entity of High-grade B-cell lymphoma with 11q aberration (HGBCL-11q) shares several biological features with both BL and DLBCL but data on its miRNA expression profile are yet scarce. Hence, this study aims to analyze the potential differences in miRNA expression of HGBCL-11q compared to BL and DLBCL.

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Aims: Accurate prediction of clinical outcomes following percutaneous coronary intervention (PCI) is essential for mitigating risk and peri-procedural planning. Traditional risk models have demonstrated a modest predictive value. Machine learning (ML) models offer an alternative risk stratification that may provide improved predictive accuracy.

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Maternal-fetal cytokine profiles in acute SARS-CoV-2 "breakthrough" infection after COVID-19 vaccination.

Front Immunol

January 2025

Department of Obstetrics and Gynecology, Massachusetts General Hospital, Harvard Medical School, Boston, MA, United States.

Objective: Vaccination is protective against severe COVID-19 disease, yet whether vaccination reduces COVID-19-associated inflammation in pregnancy has not been established. The objective of this study is to characterize maternal and cord cytokine profiles of acute SARS-CoV-2 "breakthrough" infection (BTI) after vaccination, compared with unvaccinated infection and uninfected controls.

Study Design: 66 pregnant individuals enrolled in the MGH COVID-19 biorepository (March 2020-April 2022) were included.

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White matter hyperintensities (WMHs) are commonly detected on T2-weighted magnetic resonance imaging (MRI) scans, occurring in both typical aging and Alzheimer's disease (AD). Despite their frequent appearance and their association with cognitive decline in AD, the molecular factors contributing to WMHs remain unclear. In this study, we investigated the transcriptomic profiles of two commonly affected brain regions with coincident AD pathology-frontal subcortical white matter (frontal-WM) and occipital subcortical white matter (occipital-WM)-and compared with age-matched cognitively intact controls.

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 The purpose of this review is to characterize themes among the five reconstructive microsurgery articles achieving the highest Relative Citation Ratios (RCRs) published in the past 20 years in the top journals. In doing so, researchers may be better informed on how to propose salient research questions to impact the field and understand future directions in plastic surgery.  A cross-sectional study was conducted with articles published in the top three journals based on the Impact Factor: Plastic and Reconstructive Surgery, Journal of Reconstructive Microsurgery, and Annals of Plastic Surgery.

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The corpus callosum, a major white matter region central to cognitive function, is vulnerable to aging. Using zeitgeber time (ZT) aligned with environmental light/dark cycles, we investigated temporal gene expression patterns in the corpus callosum of young (5-month-old) and aged (24-month-old) mice using RNA-seq. Comparative analysis revealed more differentially expressed genes across ZT pairs in young mice than aged mice.

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Over-the-counter diet pills and muscle-building supplements are linked to increased eating disorder diagnoses, especially among youth. With limited regulatory oversight, minors may unknowingly consume harmful substances leading to other adverse effects. Massachusetts has proposed restricting sales to individuals under 18 years.

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Children betrayed: The unseen victims of domestic violence and how law enforcement can better protect them.

Policing (Oxf)

April 2024

Kathryn J. Spearman, MSN, RN, PhD candidate, Johns Hopkins University, School of Nursing (Baltimore, MD, USA).

Domestic violence is a commonplace and serious societal problem with vast public health and economic consequences. Childhood exposure to domestic violence can blight children's biological and social development. Often, local police departments are first responders to domestic violence.

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Brain mapping during resection of high-grade brain arteriovenous malformation.

Neurosurg Focus Video

January 2025

Department of Neurosurgery, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts; and.

Eloquent brain creates a challenge when resecting brain arteriovenous malformations (bAVMs). Here the authors present their technique of using subcortical motor mapping as an adjunct to increase safety during resection of a high-grade bAVM involving somatosensory cortex as well as cortical spinal tracts and visual tracts. After a bilateral craniotomy, they use direct cortical stimulation of the left motor cortex and subcortical stimulation using a suction stimulator to dynamically map motor tracts during the resection.

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Motor mapping-guided resection of a brainstem recurrent pilocytic astrocytoma.

Neurosurg Focus Video

January 2025

Department of Neurosurgery, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts.

Brainstem tumors are bounded by a compact topography of eloquent tracts, cranial nerves, and nuclei. Reliable intraoperative neuromonitoring aids microneurosurgical technique to optimize safe resection. The authors present a case of motor mapping-guided resection of a recurrent brainstem pilocytic astrocytoma.

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Surgical management of short-segment Hirschsprung disease.

World J Pediatr Surg

December 2024

Department of General Surgery, Boston Children's Hospital, Boston, Massachusetts, USA.

Hirschsprung disease (HSCR) is the most common congenital motility disorder of the intestine, characterized by the absence of ganglion cells in the myenteric and submucosal plexuses, leading to functional bowel obstruction. Short-segment Hirschsprung disease (SS-HSCR) accounts for the majority of cases, with surgical resection being the cornerstone of treatment. Despite advances in surgical techniques, considerable variability exists in practice regarding the timing of surgery, the choice of technique, and the length of aganglionic rectal cuff to resect.

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Our case highlights the importance of being aware of the potential renal complications that can occur with acetaminophen, even when used at dosages slightly above the recommended therapeutic dose.

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Objectives: The objective of this study was to assess transthoracic echocardiography (TTE) parameters in pregnancy by race and ethnicity.

Methods: We performed a retrospective cohort study of pregnant individuals without cardiovascular disease who underwent a perinatal TTE between October 2017 and May 2022. Demographics and echocardiographic parameters were compared by race/ethnicity.

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Background: Ewing sarcoma of the head and neck (ES-HN) is a rare subsite of ES, where therapeutic outcomes need to be explored further.

Methods: This retrospective study includes ES-HN patients registered at our center between 2003 and 2019. Demographic details and treatment outcomes were recorded from the hospital database.

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Follistatins, activins and inhibins during osteoporosis therapy with denosumab or zoledronate and after their discontinuation.

Diabetes Obes Metab

January 2025

Division of Endocrinology, Diabetes and Metabolism, Department of Internal Medicine, Boston VA Healthcare System and Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts, USA.

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Local Climate Might Amplify Economic and Environmental Impacts of Electric Vehicles in China.

Environ Sci Technol

January 2025

Joint International Research Laboratory of Atmospheric and Earth System Sciences, School of Atmospheric Sciences, Nanjing University, Nanjing 210023, China.

Electric vehicles (EVs) are crucial for addressing the intertwined challenges of climate change and air pollution. The multiaspect benefits of EVs are highly dependent on local climate conditions, yet the impacts of regional heterogeneity in the context of future climate change remain unclear. Here, we develop a systemic modeling framework integrating fleet modeling, emission projection, index decomposition analysis, and detailed cost assessment to identify local drivers and potential trade-offs behind electrification.

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Objectives: Reconstruction of total pharyngolaryngectomy defects may restore pharyngeal function and enable tracheoesophageal speech after resection of locoregionally advanced malignancy. Little remains known about variations in the practices and preferences of surgeons across differing global regions.

Methods: A survey was sent to reconstructive head and neck surgeons across three continents with responses analyzed to evaluate trends.

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Zoonotic outbreaks present with unpredictable threats to human health, food production, biodiversity, national security and disrupt the global economy. The COVID-19 pandemic-caused by zoonotic coronavirus, SARS-CoV2- is the most recent upsurge of an increasing trend in outbreaks for the past 100 years. This year, emergence of avian influenza (H5N1) is a stark reminder of the need for national and international pandemic preparedness.

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Introduction: The QTc prolongation effect of methadone has been extensively studied at higher doses commonly used in opioid dependence maintenance therapy, but evidence remains limited regarding its impact at the lower doses typically prescribed for cancer pain. This study aims to evaluate the effect of oral methadone on QTc intervals in cancer pain patients.

Methods: A retrospective analysis was performed on adult patients initiated on oral methadone therapy for cancer.

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