336,211 results match your criteria: "Baltimore; and Department of Neurology & Stroke Center (G.M.D.M.)[Affiliation]"

Time Code for multifunctional 3D printhead controls.

Nat Commun

January 2025

Department of Civil and Systems Engineering, Johns Hopkins University, Baltimore, MD, USA.

Direct Ink Writing, an extrusion-based 3D printing technique, has attracted growing interest due to its ability to process a broad range of materials and integrate multifunctional printheads with features such as shape-changing nozzles, in-situ curing, material switching, and material mixing. Despite these advancements, incorporating auxiliary controls into Geometry Code (G-Code), the standard programming language for these printers, remains challenging. G-Code's line-by-line execution requires auxiliary control commands to interrupt the print path motion, causing defects in the printed structure.

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Continuing the Commitment to Diversity, Equity, and Inclusion Within AGA Journals.

Gastroenterology

February 2025

Vatche and Tamar Manoukian Division of Digestive Diseases, UCLA Kaiser Permanente Center for Health Equity and Jonsson Comprehensive Cancer Center, University of California, Los Angeles, Los Angeles, California; Department of Medicine, Veterans Affairs Greater Los Angeles Healthcare System, Los Angeles, California.

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Background: Thoracic Endovascular Aortic Repair (TEVAR) reduced mortality for blunt aortic injury (BAI) from 30-50% to < 10%; however, penetrating traumatic aortic injury (PAI) remains highly lethal (>40% mortality). This study's goal is to determine outcomes of TEVAR for PAI.

Methods: Patients undergoing TEVAR for traumatic aortic injuries were identified from the Vascular Quality Initiative database from 2011-2022.

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Background Recommendations regarding long-term postoperative activity are intended to prevent adverse events, but no common policy or best practice exists among ophthalmologists for pediatric patients. We surveyed ophthalmologists on their postoperative guidelines after the one-month postoperative period following childhood cataract and glaucoma surgeries. Methods A 28-question anonymous Qualtrics survey was distributed via listservs and social media.

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Rationale & Objective: Arterial stiffness is associated with prevalent chronic kidney disease (CKD). Whether arterial stiffness is prospectively associated with incident CKD is inconclusive.

Study Design: Longitudinal cohort study.

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Introduction: The humeral head is the second most common site for osteonecrosis but its epidemiology is poorly described. This study aimed to better understand its treatment in the United States by 1) evaluating total operative procedures with rates normalized to the annual surgical volume; 2) determining trends of non-joint preserving (shoulder arthroplasty) vs. joint preserving procedures; and 3) quantifying rates of operative techniques in different aged cohorts (<50 vs.

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Sarcoplasmic/endoplasmic reticulum Ca-ATPase1 (SERCA1) is responsible for the clearance of cytosolic Ca in skeletal muscle. Due to its vital importance in regulating Ca homeostasis, the regulation of SERCA1 has been intensively studied. Small ankyrin 1 (sAnk1, Ank1.

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Objective: This retrospective, single centre, comparative effectiveness study aimed to compare the long term outcomes of percutaneous arteriovenous fistulae (pAVF) and surgically created arteriovenous fistulae (sAVF) created in the proximal forearm for haemodialysis access.

Methods: Data were reviewed from a prospectively maintained database on patients who underwent pAVF or sAVF creation from September 2017 to September 2023. A total of 217 pAVFs (61 WavelinQ and 156 Ellipsys) and 158 sAVFs were analysed.

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Lung tissue from human patients and murine models of sickle cell disease pulmonary hypertension (SCD-PH) show perivascular regions with excessive iron accumulation. The iron accumulation arises from chronic hemolysis and extravasation of hemoglobin (Hb) into the lung adventitial spaces, where it is linked to nitric oxide depletion, oxidative stress, inflammation, and tissue hypoxia, which collectively drive SCD-PH. Here, we tested the hypothesis that intrapulmonary delivery of hemopexin (Hpx) to the deep lung is effective at scavenging heme-iron and attenuating the progression of SCD-PH.

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The age-specific incidence of traumatic brain injury in older adults is rising in high-income countries, mainly due to an increase in the incidence of falls. The severity of traumatic brain injury in older adults can be underestimated because of a delay in the development of mass effect and symptoms of intracranial haemorrhage. Management and rehabilitation in older adults must consider comorbidities and frailty, the treatment of pre-existing disorders, the reduced potential for recovery, the likelihood of cognitive decline, and the avoidance of future falls.

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Intranasal oxytocin for apathy in people with frontotemporal dementia (FOXY): a multicentre, randomised, double-blind, placebo-controlled, adaptive, crossover, phase 2a/2b superiority trial.

Lancet Neurol

February 2025

Department of Clinical Neurological Sciences, University of Western Ontario, London, ON, Canada; Department of Cognitive Neurology, St Joseph's Health Care London, London, ON, Canada. Electronic address:

Background: No treatments exist for apathy in people with frontotemporal dementia. Previously, in a randomised double-blind, placebo-controlled, dose-finding study, intranasal oxytocin administration in people with frontotemporal dementia improved apathy ratings on the Neuropsychiatric Inventory over 1 week and, in a randomised, double-blind, placebo-controlled, crossover study, a single dose of 72 IU oxytocin increased blood-oxygen-level-dependent signal in limbic brain regions. We aimed to determine whether longer treatment with oxytocin improves apathy in people with frontotemporal dementia.

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Disseminated mpox in an immunocompromised patient in DR Congo: a call for a shift from disease-focused to person-centred outbreak response.

Lancet Infect Dis

January 2025

Department of Epidemiology, Johns Hopkins University, Baltimore, MD 21205, USA; Center for Tropical Diseases and Global Health, Université Catholique de Bukavu, Bukavu, Democratic Republic of the Congo. Electronic address:

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Long-acting and extended-release drug delivery strategies have greatly improved treatment for a variety of medical conditions. Special populations, specifically infants, children, young people, and pregnant and postpartum women, could greatly benefit from access to these strategies but are often excluded from clinical trials. We conducted a systematic review of all clinical studies involving the use of a long-acting intramuscular injection or implant in infants, children, young people, and pregnant and postpartum people.

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: Extracellular vesicles (EVs) can carry pathological cargo, contributing to disease progression. The enzyme neutral sphingomyelinase 2 (nSMase2) plays a critical role in EV biogenesis, making it a promising therapeutic target. Our lab previously identified a potent and selective inhibitor of nSMase2, named DPTIP (IC = 30 nM).

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Background: Polymethyl methacrylate (PMMA) is ideal for denture bases but is prone to biofilm accumulation, leading to denture stomatitis (DS), often involving . Dimethylaminohexadecyl methacrylate (DMAHDM) and 2-methacryloyloxyethyl phosphorylcholine (MPC) are introduced into dental materials for their antimicrobial and protein-repellent properties. This study investigates the effects of incorporating dimethylaminohexadecyl methacrylate (DMAHDM) and 2-methacryloyloxyethyl phosphorylcholine (MPC) into heat-polymerized (HP) and 3D-printed (3DP) denture base resins on microbial adhesion and cytotoxicity.

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Artificial Intelligence (AI) has the disruptive potential to transform patients' lives via innovations in pharmaceutical sciences, drug development, clinical trials, and manufacturing. However, it presents significant challenges, ethical concerns, and risks across sectors and societies. AI's rapid advancement has revealed regulatory gaps as existing public policies struggle to keep pace with the challenges posed by these emerging technologies.

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Information on circulating HBV (sub-)genotype, variants, and hepatitis D virus (HDV) coinfection, which vary by geographical area, is crucial for the efficient control and management of HBV. We investigated the genomic characteristics of HBV (with a prevalence of 8.1%) and the prevalence of HDV in Nigeria.

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Mitochondrial DNA Structure in .

Pathogens

January 2025

Centro de Biología Molecular Severo Ochoa, Consejo Superior de Investigaciones Científicas, Universidad Autónoma de Madrid, Cantoblanco, 28049 Madrid, Spain.

Kinetoplastids display a single, large mitochondrion per cell, with their mitochondrial DNA referred to as the kinetoplast. This kinetoplast is a network of concatenated circular molecules comprising a maxicircle (20-64 kb) and up to thousands of minicircles varying in size depending on the species (0.5-10 kb).

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: Genomic Diversity and Structure.

Pathogens

January 2025

Centro de Biología Molecular Severo Ochoa, Consejo Superior de Investigaciones Científicas, Universidad Autónoma de Madrid, Cantoblanco, 28049 Madrid, Spain.

is the causative agent of Chagas disease, a neglected tropical disease, and one of the most important parasitic diseases worldwide. The first genome of was sequenced in 2005, and its complexity made assembly and annotation challenging. Nowadays, new sequencing methods have improved some strains' genome sequence and annotation, revealing this parasite's extensive genetic diversity and complexity.

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: There is significant underrepresentation in clinical trials across diverse populations. Less is known about how health system-related factors, such as relationships and trust, mediate the motivation for clinical trial participation. We aimed to investigate whether health system-related factors explain the association between sociodemographic factors and motivation for participation.

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: Predictors of morbidity and mortality in hospitalized COVID-19 patients have been extensively studied. However, comparative analyses of predictors for hospitalization versus discharge from the emergency department remain limited. : This retrospective study evaluated predictors of hospitalization among adults (≥18 years) presenting to the emergency department with COVID-19 infection between 1 March 2020 and 15 June 2020.

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: Alzheimer's disease (AD) is the most common neurodegenerative disease in the older adult population and is often associated with reduced physical activity. Reduced activity and mechanical loading subsequently reduce bone mineral density and increase risk of osteoporosis. Bisphosphonates (BPs) offer preventative effects on osteoporotic fractures in the general population, but their effects on patients with AD are less known.

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