204,049 results match your criteria: "Virginia; Fralin Translational Obesity Research Center[Affiliation]"

As endpoints of watersheds, bays concentrate erosion- and human-derived substances such as dissolved inorganic nutrients and pollutants. We investigated the water movement and biogeochemistry of two bays in Curaçao: Piscadera Bay and Spaanse Water, during the dry (May 2022 and 2023) and wet seasons (November 2021 and 2023). Bay-ocean exchange was limited during the dry season, enhancing nutrient concentrations in the bays.

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Characterization of a novel PET radioligand for mitochondrial complex I in nonhuman primate.

Nucl Med Biol

January 2025

Athinoula A. Martinos Center for Biomedical Imaging, Department of Radiology, Massachusetts General Hospital, Harvard Medical School, Charlestown, MA 02129, United States. Electronic address:

The role of mitochondrial complex I (MC-I) dysfunction is well-documented across a range of neurodegenerative disorders. Recently, a novel positron emission tomography (PET) radioligand, [F]CNL02, has been synthesized to target MC-I. In this paper, we provide a comprehensive characterization of [F]CNL02, using nonhuman primate as a model system.

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Background: Hikikomori, or prolonged social withdrawal, is a clinical condition usually emerging during adolescence or young adulthood, characterized by severe self-isolation in one's home, and often associated with other psychiatric disorders and symptoms.

Objective: The study summarized evidence of hikikomori diagnostic criteria, clinical manifestations, and comorbidity with psychiatric disorders and symptoms in adolescents and young adults.

Methods: A scoping review was conducted following PRISMA guidelines, with four electronic databases searched for original works in English, French, and Italian published since 2010.

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Exploring the Unique Properties and Superior Schwann Cell Guiding Abilities of Spider Egg Sac Silk.

ACS Appl Bio Mater

January 2025

Institute of Physics and Materials Science, Department of Natural Sciences and Sustainable Ressources, BOKU University, Peter Jordan-Straß 82, 1190 Vienna, Austria.

Spider silk (SPSI) is a promising candidate for use as a filler material in nerve guidance conduits (NGCs), facilitating peripheral nerve regeneration by providing a scaffold for Schwann cells (SCs) and axonal growth. However, the specific properties of SPSI that contribute to its regenerative success remain unclear. In this study, the egg sac silk of is investigated, which contains two distinct fiber types: tubuliform (TU) and major ampullate (MA) silk.

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Amino acid identification is crucial across various scientific disciplines, including biochemistry, pharmaceutical research, and medical diagnostics. However, traditional methods such as mass spectrometry require extensive sample preparation and are time-consuming, complex and costly. Therefore, this study presents a pioneering Machine Learning (ML) approach for automatic amino acid identification by utilizing the unique absorption profiles from an Elliptical Dichroism (ED) spectrometer.

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Mucin Colocalizes with Influenza Virus and Preserves Infectivity in Deposited Model Respiratory Droplets.

Environ Sci Technol

January 2025

Department of Civil and Environmental Engineering, Virginia Tech, Blacksburg, Virginia 24061, United States.

The stability of influenza virus in respiratory particles varies with relative humidity (RH) and protein content. This study investigated the decay, or loss of infectivity, of influenza A virus (IAV) in 1-μL respiratory droplets deposited on a surface with varying concentrations of mucin, one of the most abundant proteins in respiratory mucus, and examined the localization of virions within droplets. IAV remained stable at 0.

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The vibron behavior of hydrogen bears significant importance for understanding the phases of solid hydrogen under high pressure. In this work, we reveal an unusual high-pressure behavior of hydrogen confined within nanopores through a combination of experimental measurements and theoretical calculations. The nanoconfined hydrogen molecules retain an hcp lattice up to 170 GPa, yet significant deviations from the vibrational characteristics of bulk hydrogen are observed in the primary vibrons of both Raman and infrared spectra.

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Purpose: Despite rigorous evidence of improved quality of life and longer survival, disparities in the utilization of palliative and hospice care persist for racial and ethnic minority patients with cancer. This study evaluated the impact of psychosocial factors on utilization of these services.

Methods: Patients with advanced lung cancer were recruited at a large academic urban hospital.

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Objective: The aim of this study was to determine if oral beta-lactam therapy is non-inferior to alternative therapy at discharge following inpatient treatment with an IV cephalosporin for acute pyelonephritis.

Design: Institutional Review Board (IRB)-approved, multicenter, retrospective, non-inferiority cohort (15% non-inferiority margin).

Setting: Six hospitals within two healthcare systems.

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Background: The purpose of this study was to assess impingement-free internal rotation (IR) in a virtual reverse shoulder arthroplasty simulation using a Statistical Shape Model based on scapula size.

Methods: A database of over 10,000 scapulae utilized for preoperative planning for shoulder arthroplasty was analyzed with a Statistical Shape Model to obtain 5 scapula sizes including the mean and 2 standard deviations. For each scapula model, one glenosphere size (33-42 mm) was selected as the best fit based on consensus among 3 shoulder surgeons.

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Surgical Management of Fibrosing Mediastinitis Presenting as Superior Vena Cava Syndrome.

JACC Case Rep

January 2025

Division of Cardiac Surgery, Department of Surgery, Johns Hopkins Hospital, Baltimore, Maryland, USA.

Fibrosing mediastinitis is a rare chronic inflammatory condition characterized by excessive fibrotic process in the mediastinum. Although various infectious processes are more common causes, it can also be related to several malignancies. We report a case of a 28-year-old woman with fibrosing mediastinitis related to an aggressive primary gray-zone lymphoma causing complete occlusion of the superior vena cava (SVC) and the innominate veins.

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Extracavitary cardiac calcific amorphous tumors/masses are extremely rare. We present a case report of a 62-year-old man with end-stage renal disease who presented with extracavitary cardiac calcific amorphous tumors/masses compressing the biventricular outflow tracts, resulting in hemodynamic compromise and progressive limitation of activities. The patient was successfully treated with surgery, with complete resolution of symptoms and markedly improved quality of life.

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TEER for SAM of the Mitral Valve and Flail Posterior Mitral Leaflet: 1-Clip Solution.

JACC Case Rep

January 2025

Department of Cardiovascular Medicine, Richmond Heart & Vascular Associates, Richmond, Virginia, USA.

Transcatheter edge-to-edge repair (TEER) is approved for patients with symptomatic severe mitral regurgitation (MR) who are deemed inoperable or at high surgical risk with life expectancy of more than 1 year, but has also been used off-label in patients with hypertrophic obstructive cardiomyopathy (HOCM) for symptomatic relief who are not candidates for septal reduction therapy. An 83-year-old woman with decompensated heart failure was found to have HOCM with systolic anterior motion of the mitral valve and a large P2 flail segment with ruptured cords. TEER was performed resulting in mild MR and resolution of the prior left ventricular outflow tract gradient.

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Interagency teams are considered an evidence-based change practice, but there is a paucity of research examining them in criminal justice (CJ) and behavioral health (BH) reform contexts. This study draws on qualitative interviews ( = 52) and survey data ( = 791) from BH and CJ leaders across the United States to examine who is on them, what they do, and effective strategies for building and sustaining them. Findings indicated that CJ-BH interagency teams often incorporate agencies from a range of CJ, BH, social service, and health agencies.

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Background: Understanding the risk of hospitalization from severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infections can guide effective public health interventions and severity assessments. This study calculated infection-hospitalization ratios (IHRs) and infection-case ratios (ICRs) to understand the relationship between SARS-CoV-2 infections, cases, and hospitalizations among different age groups during periods of Delta and Omicron variant predominance.

Methods: After calculating antinucleocapsid SARS-CoV-2 antibody seroprevalence using residual commercial laboratory serum specimens, 2 ratios were computed: (1) IHRs using coronavirus disease 2019 hospitalization data and (2) ICRs using Centers for Disease Control and Prevention surveillance data.

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Objective: To test the hypothesis that step count based on a virtual 2-minute step test (2MST) predicts cardiorespiratory fitness (CRF).

Design: Cross-sectional study.

Setting: Veteran Affairs Medical Centers participating in a randomized trial of functional exercise training delivered by videoconferencing.

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A Phage-Based Approach to Identify Antivirulence Inhibitors of Bacterial Type IV Pili.

Microb Biotechnol

January 2025

Department of Biological Sciences, Virginia Tech, Blacksburg, Virginia, USA.

The increasing threat of antibiotic resistance underscores the urgent need for innovative strategies to combat infectious diseases, including the development of antivirulants. Microbial pathogens rely on their virulence factors to initiate and sustain infections. Antivirulants are small molecules designed to target virulence factors, thereby attenuating the virulence of infectious microbes.

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Objective: To evaluate the efficacy, safety, and durability of temperature-controlled radiofrequency (TCRF) treatment of the nasal valve in patients with severe or extreme nasal airway obstruction (NAO).

Study Design: A long-term, prospective, multicenter, single-blind, randomized controlled trial.

Setting: Sixteen otolaryngologic clinics and academic centers.

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People with mosaicism for trisomy 21 have been shown to exhibit many of the same phenotypic traits present in people with non-mosaic Down syndrome, but with varying symptom severity. However, the behavioral phenotype of people with mosaic Down syndrome (mDS) has not been well characterized. This study aimed to examine the prevalence of self-report and caregiver-report symptoms of depression and anxiety among a sample of 62 participants with mDS aged 12-46 and assess their association with the percentage of trisomy 21 in blood and/or buccal mucosa cells.

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Objective: To determine the outcomes of patients receiving hyperbaric oxygen therapy for sudden sensorineural hearing loss and the impact of patient comorbidities on outcomes.

Study Design: Retrospective chart review.

Setting: Tertiary referral center.

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Neurocritical Care Rapid Response Team Providing Critical Care Support During Mechanical Thrombectomy of Emergent Large Vessel Occlusion Stroke.

Neurocrit Care

January 2025

Divisions of Vascular Neurology and Neurocritical Care, Inova Fairfax Medical Campus, Inova Neuroscience and Spine Institute, 3300 Gallows Rd., Falls Church, VA, 22042 , USA.

Background:  Acute ischemic stroke with medium and large vessel occlusion is a leading cause of morbidity and mortality, in which timely intervention with mechanical thrombectomy (MT) is crucial for restoring cerebral blood flow and improving patient outcomes. Effective analgosedation and hemodynamic management during MT are critical to patient outcomes and typically managed by anesthesia. Because of inconsistent anesthesia support at our institution, we implemented a dedicated neurocritical care rapid response team (NCC-RRT) to manage these aspects of care.

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