2,929 results match your criteria: "Massachusetts General Hospital Harvard Medical School[Affiliation]"

Stabilization of mitochondria-associated endoplasmic reticulum membranes regulates Aβ generation in a three-dimensional neural model of Alzheimer's disease.

Alzheimers Dement

December 2024

Genetics and Aging Research Unit, MassGeneral Institute for Neurodegenerative Disease, Henry and Allison McCance Center for Brain Health, Department of Neurology, Massachusetts General Hospital, Harvard Medical School, Charlestown, Massachusetts, USA.

Introduction: We previously demonstrated that regulating mitochondria-associated endoplasmic reticulum (ER) membranes (MAMs) affects axonal Aβ generation in a well-characterized three-dimensional (3D) neural Alzheimer's disease (AD) model. MAMs vary in thickness and length, impacting their functions. Here, we examined the effect of MAM thickness on Aβ in our 3D neural model of AD.

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Context: A diagnosis of ALS can be challenging, and many people find ways to adapt. At the same time, emotional distress can arise early after an ALS diagnosis even when high quality multidisciplinary care is provided. When emotional distress occurs, it can become chronic over time, and can affect both the person living with ALS and their care-partner (together called a dyad).

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Examining Caregiver Practices During Adolescent Outpatient Alcohol Use and Co-Occurring Mental Health Treatment: Protocol for a Dyadic Ecological Momentary Assessment Study.

JMIR Res Protoc

December 2024

Center for Alcohol and Addiction Studies, Department of Psychiatry and Human Behavior, Warren Alpert Medical School of Brown University,, Brown University, Providence, RI, United States.

Background: Caregiver-involved treatments for adolescents with alcohol use disorder and co-occurring disorders (AUD+CODs) are associated with the best treatment outcomes. Understanding what caregiving practices during treatment improve core adolescent treatment targets may facilitate the refinement and scalability of caregiver-involved interventions. Caregiving is dynamic, varying by context, affect, and adolescent behavior.

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Introduction: Smoking cessation is important for men and women diagnosed with cancer. Oncology clinicians should encourage all patients to quit and offer resources to help them do so, following the 5As framework (Ask, Advise, Assess, Assist, and Arrange follow-up).

Method: This study tests gender differences in self-reported receipt of the 5As by an oncology provider among 306 recently-diagnosed male and female cancer patients.

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The endoplasmic reticulum (ER) is crucial for maintaining calcium balance, lipid biosynthesis, and protein folding. Disruptions in ER homeostasis, often due to the accumulation of misfolded or unfolded proteins, lead to ER stress, which plays a significant role in various diseases, especially cancer. Urological cancers, which account for high male mortality worldwide, pose a persistent challenge due to their incurability and tendency to develop drug resistance.

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Multicenter Analysis of the Relationship Between Operative Team Familiarity and Safety and Efficiency Outcomes in Cardiac Surgery.

Circ Cardiovasc Qual Outcomes

December 2024

Surgical Sabermetrics Laboratory, Centre for Medical Informatics, Usher Institute, The University of Edinburgh, Scotland (S.Y.).

Background: Safety in cardiac surgical procedures is predicated on effective team dynamics. This study associated operative team familiarity (ie, the extent of clinical collaboration among surgical team members) with procedural efficiency and Society of Thoracic Surgeons (STS) adjudicated patient outcomes.

Methods: Institutional STS adult cardiac surgery registry and electronic health record data from 2014 to 2021 were evaluated across 3 quaternary hospitals.

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Allergic Rhinitis (AR) is an atopic disease affecting the upper airways of predisposed subjects exposed to aeroallergens. This study evaluates the effects of a mix of specific probiotics ( PBS066, LRH020, BB077, and subsp. BLG240) on symptoms and fecal microbiota modulation in subjects with AR.

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Congenital hydrocephalus (CH), characterized by cerebral ventriculomegaly (CV), is among the most common and least understood pediatric neurosurgical disorders. We have identified in the largest-assembled CV cohort (>2,697 parent-proband trios) an exome-wide significant enrichment of protein-altering de novo variants (DNVs) in LDB1 (p = 1.11 x 10-15).

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People living with HIV (PLWH) experience a range of co-occurring psychosocial stressors, mental health symptoms, and structural barriers (e.g., "syndemics") that can impair their ability to adhere to medical recommendations for treatment.

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Background: Standardized letters of evaluation (SLOEs) are an important part of residency recruitment, particularly given the limited availability of other discerning factors in residency applications. While consensus regarding SLOE competitiveness has been studied within a small group of academic faculty, it remains unexplored how a more diverse group of letter readers interpret SLOEs in terms of competitiveness.

Methods: A sample of 50 real SLOEs in the new SLOE format (2022 eSLOE 2.

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Background: While faculty have previously been shown to have high levels of agreement about the competitiveness of emergency medicine (EM) standardized letters of evaluation (SLOEs), reviewing SLOEs remains a highly time-intensive process for faculty. Artificial intelligence large language models (LLMs) have shown promise for effectively analyzing large volumes of data across a variety of contexts, but their ability to interpret SLOEs is unknown.

Objective: The objective was to evaluate the ability of LLMs to rate EM SLOEs on competitiveness compared to faculty consensus and previously developed algorithms.

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TOPAS-nBio enables users to simulate dose rate-dependent radiation chemical yields in water radiolysis accounting for inter-track and long-term chemistry for pulsed irradiation. This study aims to extend the TOPAS-nBio chemistry for the special case of continuous high-dose rate scenario, where both intertrack and longer time reactions need to be considered, and to quantitatively validate the extended framework by comparing the results with experimental data.The inter-track chemistry and escape-values were first evaluated by the independent reaction time method.

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X-chromosome-wide association study for Alzheimer's disease.

Mol Psychiatry

December 2024

Univ. Lille, Inserm, CHU Lille, Institut Pasteur de Lille, LabEx DISTALZ - U1167-RID-AGE Facteurs de Risque et Déterminants Moléculaires des Maladies Liées au Vieillissement, Lille, France.

Article Synopsis
  • A study was conducted to investigate the X-chromosome's role in Alzheimer's Disease (AD), which had been overlooked in previous genome-wide association studies.
  • The research included 115,841 AD cases and 613,671 controls, considering different X-chromosome inactivation (XCI) states in females.
  • While no strong genetic risk factors for AD were found on the X-chromosome, seven significant loci were identified, suggesting areas for future research.
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Article Synopsis
  • Percutaneous transluminal angioplasty (PTA) for peripheral artery disease often results in vascular dissections, increasing the need for additional interventions (target lesion revascularization or TLR).
  • A study using a decision-analytic model analyzed the clinical outcomes, costs, and quality of life impacts of using the Tack Endovascular System versus the standard PTA approach, showing lower TLR rates with the Tack-supported strategy.
  • The results suggest that focal stenting (using Tack) is cost-effective for non-severe dissections and may even save costs for severe cases while improving patient quality of life, highlighting potential economic benefits in managing dissections post-PTA.
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Article Synopsis
  • - The study explores the relationship between body-focused repetitive behavior (BFRB) disorders, like trichotillomania and skin picking, and anxiety disorders, finding that comorbidity is common, with notable prevalence rates for various anxiety disorders.
  • - A meta-analysis of 119 studies revealed that current and lifetime prevalence rates for anxiety disorders among individuals with BFRBs are significant, such as 19.2% for generalized anxiety disorder and 27.5% for any anxiety disorder.
  • - Although comorbid anxiety is frequent in BFRB cases, the correlation between anxiety severity and BFRB severity is only low to moderate, indicating a complex relationship that warrants further research and consideration in clinical practice. *
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Prolonged Venous Transit on Perfusion Imaging is Associated with Longer Lengths of Stay in Acute Large Vessel Occlusions.

AJNR Am J Neuroradiol

November 2024

From the Department of Radiology (M.K.), Cooper Medical School of Rowan University, Camden, NJ, USA; Department of Radiology (J.Y.M., H.A.S., M.S., H.L., V.S.Y), Department of Neurosurgery (R.X.), and Department of Neurology (V.C.U., E.B.M., R.L., M.B., R.H.L, A.E.H), Johns Hopkins Hospital, Baltimore, MD, USA; Department of Radiology (D.A.L.), West Virginia University Medicine, Morgantown, WV, USA; Department of Neuroradiology (A.A.D.), Massachusetts General Hospital & Harvard Medical School, Boston, MA, USA; Department of Radiology (A.G.), Universite Libre De Bruxelles Hospital, Erasme, Belgium; Department of Radiology (J.J.H., B.P.), Department of Neurology (G.W.A.), Stanford University School of Medicine, Stanford, CA, USA; Department of Radiology (D.W.), Brown University/Rhode Island Hospital, Providence, RI, USA; Department of Radiology (T.D.F.), University Medical Center Munster, Munster, Germany; Department of Radiology (V.V.), Renaissance School of Medicine at Stony Brook University, Stony Brook, NY, USA; Department of Radiology (A.S.), Department of Neurology (Y.A.), University of Cincinnati, Cincinnati, OH, USA; Department of Radiology and Biomedical Imaging (K.N.), University of California San Francisco, San Francisco, CA, USA.

Background And Purpose: Prolonged venous transit (PVT+) is a marker of venous outflow; it is defined as the presence or absence of time-to-maximum ≥10 seconds timing in either the superior sagittal sinus or torcula. This novel perfusion imaging-based metric has been associated with higher odds of mortality and lower odds of functional recovery. This study aims to assess the relationship between PVT on admission perfusion imaging and length of hospital stay in large vessel occlusion strokes successfully reperfused with mechanical thrombectomy.

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Background: Anterior rotator interval lesions (ARIL) have been associated with shoulder instability. However, a paucity of data exists on its association with labrum pathology as a source for persistent anterior shoulder pain. This study primarily aims to describe pathoanatomy of ARIL and the parameters we used that aid in the diagnosis of ARIL.

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Introduction: With the implementation of low-dose computed tomography screening, multiple pulmonary tumor nodules are diagnosed with increasing frequency and the selection of surgical treatments versus systemic therapies has become challenging on a daily basis in clinical practice. In the presence of multiple carcinomas, especially adenocarcinomas, pathologically determined to be of pulmonary origin, the distinction between separate primary lung carcinomas (SPLCs) and intrapulmonary metastases (IPMs) is important for staging, management, and prognostication.

Methods: We systemically reviewed various means that aid in the differentiation between SPLCs and IPMs explored by histopathologic evaluation and molecular profiling, the latter includes DNA microsatellite analysis, array comparative genomic hybridization, TP53 and oncogenic driver mutation testing and, more recently, with promising effectiveness, next-generation sequencing comprising small- or large-scale multi-gene panels.

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Over the past decades, fundamental insights have been gained to establish the pivotal role of imaging in the diagnosis of large-vessel vasculitis, including giant cell arteritis (GCA) and Takayasu's arteritis (TAK). A deeper comprehension of imaging modalities has prompted earlier diagnosis leading to expedited treatment for better prognosis. The European Alliance of Associations in Rheumatology (EULAR) recommended in 2023 that ultrasound should be the initial imaging test in suspected GCA, and Magnetic Resonance Imaging (MRI) remains the first-line imaging modality in suspected TAK.

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Background And Purpose: Proton arc therapy and FLASH radiotherapy (FLASH-RT) each offer unique advantages in proton therapy. However, clinical translation of FLASH-RT faces challenges in defining and delivering high dose rates. We propose the use of proton FLASH-arc therapy (PFAT) to leverage the benefits of arc while addressing FLASH delivery concerns by spatially fractionating dose delivery to healthy tissue.

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Study Design: Retrospectively matched case-control study.

Objective: To compare intraoperative and postoperative outcomes between separation surgery and corpectomy with anterior reconstruction for patients with metastatic epidural spinal cord compression (MESCC).

Summary Of Background Data: The primary goal of surgery for MESCC is to preserve and improve neurological function.

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The use of positive hepatitis B surface antigen (HBsAg+) liver allografts has been increasing globally and is gaining wider acceptance within the United States. However, most of the data supporting the use of HBsAg+ organs has been in the setting of recipients with chronic hepatitis B. We aim to describe our institutional experience using HBsAg+ liver donors in HBsAg-negative recipients via case series.

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