341 results match your criteria: "S.J.A.); Mayo Clinic College of Medicine[Affiliation]"

Background: The reported benefit of poly (ADP-ribose) polymerase inhibitor (PARPi) maintenance in patients with newly diagnosed and platinum (Pt)-sensitive recurrent ovarian cancer (OC) included in randomized clinical trials needs to be corroborated in a less selected population.

Objective: The aim is to increase the evidence on niraparib in a real-world setting.

Methods: This is a retrospective observational study including women with platinum-sensitive relapsed high-grade serous OC who started niraparib maintenance between August 2019 (marketing data, Spain) and May 2022.

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Purpose: To identify key molecular components within the femoroacetabular impingement hip and compare the findings between male and female patients across varying age groups.

Methods: All patients undergoing hip arthroscopy for femoroacetabular impingement syndrome (FAIS) without hip dysplasia were included. During hip arthroscopy, performed at University of Wisconsin Health, loose articular cartilage, excess synovium, damaged labral tissue, and minimal adipose tissue were debrided only as needed for visualization and tissue repair purposes and collected.

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Chemotherapies remain standard therapy for cancers but have limited efficacy and cause significant side effects, highlighting the need for targeted approaches. In the progression of cancer, tumors increase matrix metalloproteinase (MMP) activity. Leveraging and therapeutically redirecting tumor MMPs through activatable cell-penetrating peptide (ACPP) technology offers new approaches for tumor-selective drug delivery and for studying how drug payloads engage the tumor immune microenvironment.

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US of Acute Tendon Tears.

Radiographics

December 2024

From the Department of Diagnostic Services, Hamilton Health Sciences, Hamilton General Hospital, 237 Barton St E, Hamilton, ON, Canada L8L 2X2 (L.M.B., S.J.A.); Department of Radiology, Radiation Oncology, and Medical Physics, University of Ottawa Faculty of Medicine, Ottawa, Ontario, Canada (D.V.F.); and Department of Medical Imaging, The Ottawa Hospital, Ottawa Hospital Research Institute, Ottawa, Ontario, Canada (D.V.F.).

Article Synopsis
  • Ultrasound (US) is a valuable tool for assessing acute tendon injuries, enabling quick evaluations and decisions on treatment at the bedside.
  • It surpasses physical exams in sensitivity and specificity, making it critical for accurately identifying conditions like distal triceps tears that show similar symptoms but have different severities.
  • US also helps characterize the injury's location and extent, which guides treatment choices, and can eliminate misdiagnoses by distinguishing between musculoskeletal and nonmusculoskeletal issues like deep venous thrombosis.
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Association of Striatal Dopamine Depletion and Brain Metabolism Changes With Motor and Cognitive Deficits in Patients With Parkinson Disease.

Neurology

December 2024

From the Department of Neurology (H.S.Y., H.K.N., S.K., C.H.L.), Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul; Department of Neurology (H.-K.K.), Wonju Severance Christian Hospital, Yonsei University Wonju College of Medicine; Department of Radiology (M.P., S.J.A.), and Department of Nuclear Medicine (J.-H.L., Y.H.R.), Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, South Korea.

Background And Objectives: Parkinson disease (PD) shows degeneration of dopaminergic neurons in the substantia nigra and characteristic changes in brain metabolism. However, how they correlated and affect motor and cognitive dysfunction in PD has not yet been well elucidated.

Methods: In this single-site cross-sectional study, we enrolled patients with PD who underwent -(3-[F]fluoropropyl)-2β-carbomethoxy-3β-(4-iodophenyl)nortropane (F-FP-CIT) PET, F-fluorodeoxyglucose (F-FDG) PET, the Movement Disorder Society-sponsored Unified PD Rating Scale examination, and detailed neuropsychological testing.

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Article Synopsis
  • * In a Phase II clinical trial, 27 patients received entinostat followed by nivolumab, resulting in an objective response rate of 11% and a median response duration of over 10 months, although the primary endpoint for overall effectiveness was not reached.
  • * The combination treatment led to significant immune profile changes, including increased dendritic cell activity and enhanced inflammatory response, suggesting potential for improving treatment strategies in PDA despite
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Heart failure (HF) is a leading cause of mortality, morbidity, and financial burden worldwide. The emergence of advanced artificial intelligence (AI) technologies, particularly Generative Pre-trained Transformer (GPT) systems, presents new opportunities to enhance HF management. In this review, we identified and examined existing studies on the use of ChatGPT in HF care by searching multiple medical databases (PubMed, Google Scholar, Medline, and Scopus).

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Induction of a distinct macrophage population and protection from lung injury and fibrosis by Notch2 blockade.

Nat Commun

November 2024

Department of Research Biology, Genentech Research and Early Development, South San Francisco, CA, 94080, USA.

Article Synopsis
  • Macrophages are diverse cells that inhabit all body tissues, with specific types residing in organs and additional subtypes recruited during injury.
  • A specific population of recruited macrophages, marked by certain gene expressions, has been linked to fibrosis in various injury and cancer models.
  • Blocking Notch2 increases these macrophages in the lungs, but evidence suggests they actually help reduce fibrosis rather than cause it, highlighting their potential protective role during lung injuries.
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Background: The protein kinase DYRK1B is a negative regulator of cell proliferation but has been found to be overexpressed in diverse human solid cancers. While DYRK1B is recognized to promote cell survival and adaption to stressful conditions, the consequences of elevated DYRK1B levels in cancer cells are largely uncharted.

Methods: To elucidate the role of DYRK1B in cancer cells, we established a A549 lung adenocarcinoma cell model featuring conditional overexpression of DYRK1B.

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Biopsychosocial Approaches for the Management of Female Chronic Pelvic Pain: A Systematic Review.

BJOG

February 2025

Department of Women's and Children's Health, Institute of Life Course and Medical Sciences, University of Liverpool, Liverpool, UK.

Background/objective: Current guidelines recommend biopsychosocial-informed treatment for chronic pelvic pain (CPP). The objective of this systematic review was to describe the available biopsychosocial approaches for the treatment of CPP, and the outcomes reported, to understand how guideline-recommended treatments can be applied.

Search Strategy: MEDLINE, CINAHL, PsycINFO, EMBASE, Emcare, AMED and Cochrane trial registries were searched (inception to 17 November 2023).

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Article Synopsis
  • The study investigates how genotype analysis can enhance the classification of (mosaic) aneuploid embryos that have been diagnosed through copy number analysis of a trophectoderm biopsy.
  • Results showed that genotype analysis can identify different types of aneuploidy, revealing meiotic or uniform aneuploidy in embryos with intermediate changes, and presumed mitotic or mosaic aneuploidy in those with full changes.
  • The research involved a large-scale analysis of 1560 embryos, focusing on assessing the chromosomal anomalies and their origins by integrating copy number data with genotyping.
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Diarrhoeal disease caused by Cryptosporidium is a major cause of morbidity and mortality in young and malnourished children from low- and middle-income countries, with no vaccine or effective treatment. Here we describe the discovery of EDI048, a Cryptosporidium PI(4)K inhibitor, designed to be active at the infection site in the gastrointestinal tract and undergo rapid metabolism in the liver. By using mutational analysis and crystal structure, we show that EDI048 binds to highly conserved amino acid residues in the ATP-binding site.

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Article Synopsis
  • Randomized trials in stroke often evaluate multiple outcomes, but a limitation is that all events are treated equally despite varying severity.
  • The win ratio is introduced as a new method, prioritizing clinically significant outcomes in a hierarchical order, which helps manage competing risks like death.
  • This approach has potential benefits, such as emphasizing key outcomes and combining various outcome types, and it will be applied in the upcoming ECST-2 trial, advocating for a broader use of the win ratio in future stroke research.
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Nucleoside-modified mRNA-LNP vaccines have revolutionized vaccine development against infectious pathogens due to their ability to elicit potent humoral and cellular immune responses. In this article, we present the results of the first norovirus vaccine candidate employing mRNA-LNP platform technology. The mRNA-LNP bivalent vaccine encoding the major capsid protein VP1 from GI.

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Evaluating the amoeba thioredoxin reductase selenoprotein as potential drug target for treatment of Acanthamoeba infections.

Int J Parasitol Drugs Drug Resist

December 2024

Institute of Specific Prophylaxis and Tropical Medicine, Center for Pathophysiology, Infectiology and Immunology, Medical University of Vienna, 1090, Vienna, Austria. Electronic address:

The genus Acanthamoeba comprises facultative pathogens, causing Acanthamoeba keratitis (AK) and granulomatous amoebic encephalitis (GAE). In both diseases, treatment options are limited, and drug development is challenging. This study aimed to investigate the role of the large thioredoxin reductase selenoprotein of Acanthamoeba (AcTrxR-L) as a potential drug target assessing the effects of the thioredoxin reductase inhibitors auranofin, TRi-1, and TRi-2 on AcTrxR-L activity and on the viability of Acanthamoeba trophozoites.

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Safe and effective in vivo delivery of DNA and RNA using proteolipid vehicles.

Cell

September 2024

Department of Oncology, University of Alberta, Edmonton, AB T6G 2E1, Canada; Entos Pharmaceuticals, 10230 Jasper Avenue, Suite 4550, Edmonton, AB T5J 4P6, Canada; OncoSenX, 701 Fifth Avenue, Suite 4200, Seattle, WA 98104, USA; Oisin Biotechnologies, 701 Fifth Avenue, Suite 4200, Seattle, WA 98104, USA. Electronic address:

Genetic medicines show promise for treating various diseases, yet clinical success has been limited by tolerability, scalability, and immunogenicity issues of current delivery platforms. To overcome these, we developed a proteolipid vehicle (PLV) by combining features from viral and non-viral approaches. PLVs incorporate fusion-associated small transmembrane (FAST) proteins isolated from fusogenic orthoreoviruses into a well-tolerated lipid formulation, using scalable microfluidic mixing.

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Proximogram-A multi-omics network-based framework to capture tissue heterogeneity integrating single-cell omics and spatial profiling.

Comput Biol Med

November 2024

Department of Computational Medicine and Bioinformatics, University of Michigan, Ann Arbor, MI, USA; Department of Pediatrics, University of Michigan, Ann Arbor, MI, USA; Department of Biostatistics, University of Michigan, Ann Arbor, MI, USA; Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI, USA; Department of Radiation Oncology, University of Michigan, Ann Arbor, MI, USA. Electronic address:

Article Synopsis
  • The availability of diverse biological data is enabling more effective ways to analyze and combine this information for better disease understanding.
  • The authors introduce "Proximogram," a graph-based model that integrates various biological datasets, specifically using multiplexed immunofluorescence and single-cell RNA-seq data from pancreatic disease patients.
  • The study demonstrates that using proximograms in graph deep-learning models leads to better classification results by merging structural data from cell interactions with spatial cell layouts, highlighting potential diagnostic markers.
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Primary vaccination with mRNA-1273 (100-µg) was safe and efficacious at preventing coronavirus disease 2019 (COVID-19) in the previously reported, blinded Part A of the phase 3 Coronavirus Efficacy (COVE; NCT04470427) trial in adults (≥18 years) across 99 U.S. sites.

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Prognostic impact of tumor location and gene expression profile in sporadic desmoid tumor.

Eur J Cancer

September 2024

Health Research Institute Fundación Jiménez Díaz (IIS-FJD, UAM), Madrid, Spain; Medical Oncology Department, University Hospital General de Villalba, Madrid, Spain; Medical Oncology Department, University Hospital Fundación Jiménez Díaz, Madrid, Spain. Electronic address:

Article Synopsis
  • Prognostic biomarkers are important for understanding sporadic desmoid tumors (DT) due to their unpredictable nature; this study focused on gene expression differences between DTs located in the thoracic versus abdominal wall.
  • A retrospective analysis of 197 sporadic DT patients showed significant relationships between relapse-free survival (RFS) and factors like tumor size, location, and specific gene mutations, notably the CTNNB1 T41A and S45F mutations.
  • Results suggest that tumors in the abdominal wall have a better prognosis compared to extra-abdominal locations, with distinct gene expression profiles influencing cancer pathways related to their behavior and outcomes.
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The Consortium of Eosinophilic Gastrointestinal disease Researchers (CEGIR) and The International Gastrointestinal Eosinophil Researchers (TIGERs) organized a daylong symposium at the 2024 annual meeting of the American Academy of Allergy, Asthma & Immunology. The symposium featured new discoveries in basic and translational research as well as debates on the mechanisms and management of eosinophilic gastrointestinal diseases. Updates on recent clinical trials and consensus guidelines were also presented.

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Severe acute respiratory syndrome coronavirus type 2 (SARS-CoV-2) continues to be a global threat due to its ability to evolve and generate new subvariants, leading to new waves of infection. Additionally, other coronaviruses like Middle East respiratory syndrome coronavirus (MERS-CoV, formerly known as hCoV-EMC), which first emerged in 2012, persist and continue to present a threat of severe illness to humans. The continued identification of novel coronaviruses, coupled with the potential for genetic recombination between different strains, raises the possibility of new coronavirus clades of global concern emerging.

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Background: Differentiating wide complex tachycardias (WCTs) into ventricular tachycardia (VT) and supraventricular wide tachycardia via 12-lead ECG interpretation is a crucial but difficult task. Automated algorithms show promise as alternatives to manual ECG interpretation, but direct comparison of their diagnostic performance has not been undertaken.

Methods: Two electrophysiologists applied 3 manual WCT differentiation approaches (ie, Brugada, Vereckei aVR, and VT score).

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Pancreatic ductal adenocarcinoma (PDAC) represents a challenge in oncology, with limited treatment options for advanced-stage patients. Chimeric antigen receptor T cell (CAR T) therapy targeting mesothelin (MSLN) shows promise, but challenges such as the hostile immunosuppressive tumor microenvironment (TME) hinder its efficacy. This study explores the synergistic potential of combining proton radiation therapy (RT) with MSLN-targeting CAR T therapy in a syngeneic PDAC model.

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Large Language Models as Tools to Generate Radiology Board-Style Multiple-Choice Questions.

Acad Radiol

September 2024

College of Medicine, University of Saskatchewan, Saskatoon, Saskatchewan, Canada (N.P.M., H.S., H.O., S.J.A.); Department of Medical Imaging, Royal University Hospital, Saskatoon, Saskatchewan, Canada (N.P.M., H.O., S.J.A.). Electronic address:

Rationale And Objectives: To determine the potential of large language models (LLMs) to be used as tools by radiology educators to create radiology board-style multiple choice questions (MCQs), answers, and rationales.

Methods: Two LLMs (Llama 2 and GPT-4) were used to develop 104 MCQs based on the American Board of Radiology exam blueprint. Two board-certified radiologists assessed each MCQ using a 10-point Likert scale across five criteria-clarity, relevance, suitability for a board exam based on level of difficulty, quality of distractors, and adequacy of rationale.

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Introduction: Early neoplastic progression of Barrett's esophagus (BE) is often treated with endoscopic therapy. Although effective, some patients are refractory to therapy or recur after apparent eradication of the BE. The goal of this study was to determine whether genomic alterations within the treated BE may be associated with persistent or recurrent disease.

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