4,657 results match your criteria: "Beth Israel deaconess Medical Center and Harvard Medical School[Affiliation]"

Background: Despite recommendations against routine use, sodium bicarbonate (SB) is administered in approximately 50% of adult and pediatric in-hospital cardiac arrest (IHCA).

Methods: Cross-sectional electronic survey of adult and pediatric attending physicians at two academic hospitals in Boston, Massachusetts. The survey included two IHCA vignettes.

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Two-ended recombination at a Flp-nickase-broken replication fork.

Mol Cell

January 2025

Department of Medicine, Division of Hematology-Oncology and Cancer Research Institute, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, MA 02215, USA. Electronic address:

Replication fork collision with a DNA nick can generate a one-ended break, fostering genomic instability. The opposing fork's collision with the nick could form a second DNA end, enabling conservative repair by homologous recombination (HR). To study mechanisms of nickase-induced HR, we developed the Flp recombinase "step arrest" nickase in mammalian cells.

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Background: Cardiovascular magnetic resonance (CMR) phase contrast is used to quantify blood flow. We sought to develop a complex-difference reconstruction for inline super-resolution of phase-contrast flow (CRISPFlow) to accelerate phase-contrast imaging.

Methods: CRISPFlow was built on the super-resolution generative adversarial network.

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Background: Late gadolinium enhancement (LGE) cardiovascular magnetic resonance (CMR) imaging enables imaging of scar/fibrosis and is a cornerstone of most CMR imaging protocols. CMR imaging can benefit from image acceleration; however, image acceleration in LGE remains challenging due to its limited signal-to-noise ratio. In this study, we sought to evaluate a rapid two-dimensional (2D) LGE imaging protocol using a generative artificial intelligence (AI) algorithm with inline reconstruction.

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Background: Colloid bodies (CB), also known as Civatte bodies, are commonly seen in inflammatory dermatoses and are thought to represent cell degeneration. No studies have investigated the incidence and clinical associations of CB in cutaneous basal cell carcinoma (BCC). The aim of this study is to assess the incidence of CB in BCC lesions and analyze their clinical associations.

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Article Synopsis
  • The study focuses on the need for an objective method to evaluate and compare different computer-aided detection (CADe) algorithms used in colorectal cancer screening, as their performance varies and no standard exists.
  • A modified Delphi approach was employed, where 25 experts generated and prioritized scoring criteria over eight months, ultimately identifying six key metrics, including sensitivity and adenoma detection rate.
  • The resulting criteria aim to guide the development and improvement of CADe software, with future research suggested to validate these metrics on benchmark video datasets.
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Genetic evidence against involvement of TRPC proteins in SOCE, ROCE, and CRAC channel function.

Proc Natl Acad Sci U S A

December 2024

Institute of Biomedical Research, School of Biomedical Sciences, Catholic University of Argentina, Buenos Aires C1107AFF, Argentina.

Article Synopsis
  • Researchers used genetically engineered mice and cell lines to study how the depletion of endoplasmic reticulum (ER) calcium stores activates specific calcium entry channels (SOCE) that primarily rely on Orai1 molecules.
  • They discovered that Orai1 is the dominant calcium entry pathway compared to Orai2 and Orai3, and this process does not require functional TRPC molecules, as shown by experiments using cells with inactive TRPC genes.
  • The study also found that even though the TRPC genes were disrupted, both store-depletion-activated calcium entry and receptor-operated calcium entry (ROCE) still relied on Orai1, leading to the establishment of a new strain of mice called TRPC heptaKO mice, which are
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Background: Left atrial appendage closure (LAAC) is an alternative therapy for patients with nonvalvular atrial fibrillation who are not eligible for long-term oral anticoagulation. However, the optimal therapy after this procedure still is controversial, especially in a subgroup of patients with severe renal dysfunction.

Objective: The purpose of this study was to evaluate the use of low-dose direct oral anticoagulation (l-DOAC) vs dual antiplatelet therapy (DAPT) after LAAC in patients with nonvalvular atrial fibrillation.

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Article Synopsis
  • * Traditional imaging techniques can help rule out conditions like urinary obstruction but still fall short in providing a clear diagnosis for the underlying causes of AKI.
  • * There is growing interest in developing new urine and blood biomarkers that could lead to better diagnostic tools, particularly for conditions like acute interstitial nephritis and damage from chemotherapy, which might significantly enhance patient care and outcomes.
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Objectives: Moyamoya disease (MMD) is a cerebrovascular disorder marked by the progressive steno-occlusion of the bilateral internal carotid arteries and the formation of abnormal collateral vessel networks at the base of the brain. Previous studies have attempted to identify risk factors predictive of postoperative complications to improve patient management. This study aims to identify pretreatment factors associated with post-bypass symptomatic strokes in MMD patients.

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Categorical and Dimensional Approaches for Psychiatric Classification and Treatment Targeting: Considerations from Psychosis Biotypes.

Adv Neurobiol

November 2024

Departments of Psychiatry and Neuroscience, Olin Neuropsychiatric Research Center, Institute of Living, Hartford Hospital, and Yale University School of Medicine, Hartford, CT, USA.

Categorical diagnosis, a pillar of the medical model, has not worked well in psychiatry where most diagnoses are still exclusively symptom based. Uncertainty continues about whether categories or dimensions work better for the assessment and treatment of idiopathic psychoses. The Bipolar Schizophrenia Network for Intermediate Phenotypes (B-SNIP) examined multiple cognitive and electrophysiological biomarkers across a large transdiagnostic psychosis data set.

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Results from multiple recent studies support further evaluation of 3,4-methylenedioxymethamphetamine (MDMA) in conjunction with psychotherapy (i.e., MDMA-Assisted Therapy) in the treatment of post-traumatic stress disorder (PTSD).

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G-mediated signaling stimulates hepatic glucose production and has a major impact on whole body glucose homeostasis.

Nat Commun

November 2024

Molecular Signaling Section, Laboratory of Bioorganic Chemistry, NIDDK, NIH, Bethesda, MD, USA.

Altered hepatic glucose fluxes are critical during the pathogenesis of type 2 diabetes. G protein-coupled receptors represent important regulators of hepatic glucose production. Recent studies have shown that hepatocytes express GPCRs that can couple to G, a subfamily of heterotrimeric G proteins that has attracted relatively little attention in the past.

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Article Synopsis
  • * The KDOQI Work Group generally agrees with KDIGO's suggestions for CKD evaluation, management options, and the use of new medications such as SGLT2 inhibitors for various CKD types, particularly in patients with diabetes.
  • * The guidelines stress team-based care as essential in addressing CKD challenges, and the work group has identified barriers and opportunities for implementing these new recommendations while continuing research on early CKD detection and treatment.
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Article Synopsis
  • Genetic Basis of Migraine
  • : Migraine is largely polygenic, with many genetic variants identified through genome-wide association studies. Key mutations are linked to the TRPM8 channel, which senses cold but may have different activation mechanisms related to migraine.
  • Role of Artemin and GFRα3
  • : The study explores how the neurotrophic factor artemin and its receptor GFRα3 influence migraine-related pain through their effects on TRPM8, potentially affecting cold sensitivity and pain responses in migraine models.
  • Preclinical Findings
  • : Experiments on mice show that GFRα3 is crucial for mechanical sensitivity in migraine, as blocking artemin reduces migraine-like symptoms, highlighting its significance in
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Article Synopsis
  • - This study looks at how sleep disturbances affect emotional well-being daily, with a focus on how exercise and social interaction might play a role in this relationship.
  • - Using data from 455 participants over 20 days, researchers found that better sleep efficiency leads to more positive feelings and less negative feelings, while poor sleep quality has the opposite effect.
  • - The study revealed that exercise can help lessen the negative impact of bad sleep on emotions, while more social interaction can enhance the benefits of good sleep on emotional health.
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Introduction: Ancillary testing on cytopathology and other small biopsy specimens is crucial for diagnosis and provides critical information to clinicians. Testing is dependent on preanalytic factors and would benefit from standardization of specimen collection protocols across laboratories. To assess institutional practices and areas of need for evidence-based standards, we surveyed current practices across cytopathology laboratories.

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Frailty represents a dynamic multisystem state of reduced physiological reserve that increases vulnerability to adverse health outcomes. Frailty occurs prematurely in adults with immune-mediated rheumatic diseases and is emerging as an important risk factor for adverse outcomes in these conditions. In this Series paper, we present a conceptual overview of frailty and its prevalence among patients with immune-mediated rheumatic diseases.

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Ageism and rheumatic diseases.

Lancet Rheumatol

December 2024

Division of Rheumatic Diseases, Department of Medicine, UT Southwestern Medical Center, Dallas, TX, USA; Rheumatology, Medical Service, Veterans Administration North Texas Health Care System, Dallas VA North Texas Health Care System, Dallas, TX, USA.

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