44,171 results match your criteria: "VT; The Geisel School of Medicine at Dartmouth College[Affiliation]"

Reinforcing treatment and evaluation workflow of stereotactic ablative body radiotherapy for refractory ventricular tachycardia.

Radiat Oncol J

December 2024

Department of Radiation Oncology, Yonsei Cancer Center, Heavy Ion Therapy Research Institute, Yonsei University College of Medicine, Seoul, Republic of Korea.

Purpose: Cardiac radioablation is a novel, non-invasive treatment for ventricular tachycardia (VT), involving a single fractional stereotactic ablative body radiotherapy (SABR) session with a prescribed dose of 25 Gy. This complex procedure requires a detailed workflow and stringent dose constraints compared to conventional radiation therapy. This study aims to establish a consistent institutional workflow for single-fraction cardiac VT-SABR, emphasizing robust plan evaluation and quality assurance.

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Single-cell RNA sequencing (scRNA-seq) is widely used in plant biology and is a powerful tool for studying cell identity and differentiation. However, the scarcity of known cell-type marker genes and the divergence of marker expression patterns limit the accuracy of cell-type identification and our capacity to investigate cell-type conservation in many species. To tackle this challenge, we devise a novel computational strategy called Orthologous Marker Gene Groups (OMGs), which can identify cell types in both model and non-model plant species and allows for rapid comparison of cell types across many published single-cell maps.

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Purpose: Patients with inborn errors of immunity (IEI) have lifelong health complications including severe infections and physical impairments. Previous studies show that a patient's perception of their health is an important predictor of health outcomes. The purpose of this study was to understand factors related to patient reported health status.

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The diagnosis of milk fever or hypocalcemia in lactating cows has a significant economic impact on the dairy industry. It is challenging to identify asymptomatic subclinical hypocalcemia (SCH) in transition dairy cows. Monitoring subclinical hypocalcemia in milk samples can expedite treatment and improve the health, productivity, and welfare of dairy cows.

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Chromosome instability is a prevalent vulnerability of cancer cells that has yet to be fully exploited therapeutically. To identify genes uniquely essential to chromosomally unstable cells, we mined the Cancer Dependency Map for genes essential in tumor cells with high levels of copy number aberrations. We identify and validate KIF18A, a mitotic kinesin, as a vulnerability of chromosomally unstable cancer cells.

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Effects of a self-efficacy-centered self-management program on neurogenic bladder after spinal cord injury: A randomized controlled trial.

Jpn J Nurs Sci

January 2025

Center for Medical Ultrasound, Suzhou Municipal Hospital, The Affiliated Suzhou Hospital of Nanjing Medical University, Gusu School, Nanjing Medical University, Suzhou, China.

Purpose: The present research aimed to investigate the effects of a self-efficacy-centered self-management program on persons with neurogenic bladder (NGB) after spinal cord injury (SCI).

Design: A randomized controlled trial.

Materials And Methods: Eighty-two individuals with NGB after spinal cord injury (SCI) were randomized into either the control or intervention group.

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This study examines the impact of the COVID-19 pandemic and stay-at-home (SAH) orders on gun violence in New York City (NYC), with a focus on variations across neighborhood demographic and socioeconomic characteristics. Using a 4-year longitudinal and geospatial analysis, we investigate the relationship between socioeconomic factors (e.g.

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Association between autoimmune diseases and all-cause mortality in patients with cardiac arrhythmia.

Rev Esp Cardiol (Engl Ed)

December 2024

Arrhythmia Center, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing, China. Electronic address:

Article Synopsis
  • Autoimmune diseases (ADs) are linked to a higher risk of all-cause mortality in patients with cardiac arrhythmias, particularly atrial fibrillation and ventricular tachycardia.
  • The study analyzed data from over 14,000 patients, finding that those with ADs had increased mortality rates after one year of discharge.
  • Statistical analyses confirmed these results, highlighting the significant risk associated with ADs in arrhythmia patients, although the association for bradyarrhythmias did not reach statistical significance.
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Article Synopsis
  • The study aimed to validate simpler methods for measuring [Ga]Ga-FAPI-46 uptake by comparing them to comprehensive pharmacokinetic modeling.
  • Ten patients with pancreatobiliary cancer participated in a 90-minute dynamic PET/CT scan, and various methods, including plasma-input tissue-compartment models, were used to assess the uptake of the compound in lesions.
  • The results indicated that image-based target-to-whole blood ratio (TBR) and mean standardized uptake values (SUVmean) at 60-70 minutes post-injection are effective and reliable for quantifying [Ga]Ga-FAPI-46 uptake.
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Research and Implementation of Psychedelic-Assisted Therapy in the Veterans Health Administration.

Am J Psychiatry

January 2025

Directorate of Behavioral Health, Walter Reed National Military Medical Center, Bethesda, Md. (Wolfgang); Department of Psychiatry, Uniformed Services University, Bethesda, Md. (Wolfgang, Benedek); Department of Psychiatry, Yale University School of Medicine, New Haven, Conn. (Wolfgang, Wiechers); Department of Veterans Affairs, Office of Research and Development, Washington, D.C. (McClair, Smyth, Tenhula); Department of Veterans Affairs, Executive Division, National Center for PTSD, White River Junction, Vt. (Schnurr, Holtzheimer); Department of Psychiatry, Geisel School of Medicine at Dartmouth, Hanover, N.H. (Schnurr, Holtzheimer); Department of Psychiatry and Behavioral Sciences, University of California, San Francisco. (Woolley, Wiechers); San Francisco Veterans Affairs Medical Center, San Francisco. (Woolley); Department of Psychiatry, Oregon Health and Science University, Portland, Ore. (Stauffer); Department of Mental Health; VA Portland Health Care System, Portland, Ore. (Stauffer); Substance Abuse and Mental Health Services Administration, Rockville, Md. (Wolf); Department of Health and Human Services, Office of the Assistant Secretary for Health, Washington, D.C. (States); Department of Psychiatry, Harvard Medical School, Boston (Bradley); VA Boston Healthcare System, Boston (Bradley); Department of Veterans Affairs, Pharmacy Benefits Management Service, Washington, D.C. (Fuller); Department of Psychiatry, Case Western Reserve University, Cleveland, Ohio (Fuller); Department of Veterans Affairs, Northeast Program Evaluation Center, Office of Mental Health, Washington, D.C. (Hermes); Veterans Health Administration Office of Mental Health, Washington, D.C. (Wiechers).

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Background: Wide QRS complex tachycardia (WCT) differentiation into ventricular tachycardia (VT) and supraventricular wide complex tachycardia (SWCT) remains challenging despite numerous 12-lead electrocardiogram (ECG) criteria and algorithms. Automated solutions leveraging computerized ECG interpretation (CEI) measurements and engineered features offer practical ways to improve diagnostic accuracy. We propose automated algorithms based on (i) WCT QRS polarity direction (WCT Polarity Code [WCT-PC]) and (ii) QRS polarity shifts between WCT and baseline ECGs (QRS Polarity Shift [QRS-PS]).

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This study presents a novel methodology for high-resolution 3D bladder modeling during filling, developed by leveraging improved imaging and computational techniques. Using murine bladder filling data, the methodology generates accurate 3D geometries across time, enabling in-depth mechanical analysis. Comparison with a traditional spherical model revealed similar stress trends, but the 3D model permitted nuanced quantifications, such as localized surface curvature and stress analysis.

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Chemical mitochondrial uncouplers are protonophoric, lipophilic small molecules that transport protons from the mitochondrial intermembrane space into the matrix independent of ATP synthase, thus uncoupling nutrient oxidation from ATP production. Our previous work identified BAM15 (IC 0.27 μM) as a potent and efficacious mitochondrial uncoupler with potential for obesity treatment.

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Pulmonary mucus serves as a crucial protective barrier in the respiratory tract, defending against pathogens and contributing to effective clearance mechanisms. In Muco Obstructive Pulmonary Diseases (MOPD), abnormal rheological properties lead to highly viscous mucus, fostering chronic infections and exacerbations. While prior research has linked mucus viscoelasticity to its mucin content, the variability in MOPD patients implies the involvement of other factors.

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Herein, SUMO-LUMO inversion (SLI) radicals - were designed by the combination of the tris(2,4,6-trichlorophenyl)methyl (TTM) radical and pyridinium derivatives (electron-withdrawing groups) for the first time. The energy of the LUMO lies below that of the SUMO, which deviated from the Aufbau principle as an alternative electronic configuration beyond the well-established SOMO-HOMO inversed system. Thus, for SLI radicals, the injection of one extra electron preferred to occupy the LUMO rather than the SUMO, giving diradicals, one of which had been fully confirmed by single crystal analysis, VT-NMR and VT-EPR experiments, as well as DFT calculations.

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Purposes: The objective of this study was to investigate intra-articular distal radius fractures, aiming to provide a comprehensive analysis of fracture patterns and discuss the corresponding treatment strategies for each pattern.

Methods: 294 cases of intra-articular distal radius fractures lines were collected and clustered thorough K-means and hierarchical clustering algorithm. The demographic data of patients and the clinical treatment outcomes were recorded.

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Survival of Salmonella on Biodegradable Mulch, Landscape Fabric, and Plastic Mulch.

J Food Prot

December 2024

Department of Food Science and Technology, Virginia Tech, Blacksburg, Virginia, USA. Electronic address:

Ground covers are used in produce production to enhance plant growth and control diseases and pests. While various factors are considered when selecting commercial ground covers, food safety, particularly the survival of foodborne pathogens, is often overlooked. This study aimed to assess the survival of Salmonella on different ground covers, including biodegradable mulch, landscape fabric, and plastic mulch.

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Background: Catecholaminergic polymorphic ventricular tachycardia (CPVT) is a rare inherited arrhythmia disorder characterized by ventricular arrhythmia triggered by adrenergic stimulation.

Case Presentation: A 9-year-old boy presented with convulsions following physical exertion. Bidirectional ventricular tachycardia (VT) during a treadmill test led to the diagnosis of catecholaminergic polymorphic ventricular tachycardia (CPVT).

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Most of the recent work in psychedelic neuroscience has been done using noninvasive neuroimaging, with data recorded from the brains of adult volunteers under the influence of a variety of drugs. While these data provide holistic insights into the effects of psychedelics on whole-brain dynamics, the effects of psychedelics on the mesoscale dynamics of neuronal circuits remain much less explored. Here, we report the effects of the serotonergic psychedelic N,N-diproptyltryptamine (DPT) on information-processing dynamics in a sample of in vitro organotypic cultures of cortical tissue from postnatal rats.

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Acute astrocytic and neuronal regulation of glutamatergic protein expression following blast.

Neurosci Lett

December 2024

School of Biomedical Engineering and Sciences, Virginia Tech, Blacksburg, VA, USA; Department of Biomedical Engineering and Mechanics, Virginia Tech, Blacksburg, VA, USA; Veterans Affairs Medical Center, Salem, VA, USA. Electronic address:

Regulation of glutamate through glutamate-glutamine cycling is critical for mediating nervous system plasticity. Blast-induced traumatic brain injury (bTBI) has been linked to glutamate-dependent excitotoxicity, which may be potentiating chronic disorders such as post-traumatic epilepsy. The purpose of this study was to measure changes in the expression of astrocytic and neuronal proteins responsible for glutamatergic regulation at 4-, 12-, and 24 h in the cortex and hippocampus following single blast exposure in a rat model for bTBI.

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Cellular takeover: How new world alphaviruses impact host organelle function.

Virology

December 2024

Department of Biomedical Sciences and Pathobiology, Virginia-Maryland College of Veterinary Medicine, Virginia Polytechnic Institute and State University, Blacksburg, VA, 24061, USA; Center for Emerging, Zoonotic, and Arthropod-borne Pathogens, Virginia Polytechnic Institute and State University, Blacksburg, VA, 24061, USA. Electronic address:

Alphavirus replication is dependent on host cell organelles to facilitate multiple steps of the viral life cycle. New world alphaviruses (NWA) consisting of eastern, western and Venezuelan equine encephalitis viruses are a subgroup of alphaviruses associated with central nervous system disease. Despite differing morbidity and mortality amongst these viruses, all are important human pathogens due to their transmission through viral aerosolization and mosquito transmission.

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Application of deep learning models on single-cell RNA sequencing analysis uncovers novel markers of double negative T cells.

Sci Rep

December 2024

Department of Biomedical Sciences and Pathobiology, Virginia Tech, Blacksburg, VA, USA.

Double negative T (DNT) cells are a unique subset of CD3 + TCRαβ + T lymphocytes that lack CD4, CD8, or NK1.1 expression and constitute 3-5% of the total T cell population in C57BL/6 mice. They have increasingly gained recognition for their novel roles in the immune system, especially under autoimmune conditions.

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Feasibility and safety of ultra-low volume ventilation (≤ 3 ml/kg) combined with extra corporeal carbon dioxide removal (ECCOR) in acute respiratory failure patients.

Crit Care

December 2024

Department of Anesthesia and Intensive Care Unit, Regional University Hospital of Montpellier, St-Eloi Hospital, PhyMedExp, INSERM U1046, CNRS UMR, University of Montpellier, 9214, Montpellier Cedex 5, France.

Background: Ultra-protective ventilation is the combination of low airway pressures and tidal volume (Vt) combined with extra corporeal carbon dioxide removal (ECCOR). A recent large study showed no benefit of ultra-protective ventilation compared to standard ventilation in ARDS (Acute Respiratory Distress Syndrome) patients. However, the reduction in Vt failed to achieve the objective of less than or equal to 3 ml/kg predicted body weight (PBW).

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