1,408 results match your criteria: "University of Maryland - College Park[Affiliation]"

Background: Depressive moods and behaviors are developmentally normative, yet potentially impairing, in preschool-aged children. In addition to frequency, duration of behavior is an important parameter to consider when characterizing risk for worsening mood dysregulation. The goal of this study was to identify the duration and severity of depressive moods and behaviors and associations with impairment in a large community sample of preschool-aged children using an online parent-report daily diary.

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A common approach to assess the nature of energy conversion in a classical fluid or plasma is to compare power densities of the various possible energy conversion mechanisms. A leading research area is quantifying energy conversion for systems that are not in local thermodynamic equilibrium (LTE), as is common in a number of fluid and plasma systems. Here we introduce the "higher-order nonequilibrium term" (HORNET) effective power density, which quantifies the rate of change of departure of a phase space density from LTE.

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Mosquito midgut stem cell cellular defense response limits Plasmodium parasite infection.

Nat Commun

February 2024

Laboratory of Malaria and Vector Research, National Institutes of Allergy and Infectious Diseases, National Institutes of Health, Rockville, MD, 20852, USA.

A novel cellular response of midgut progenitors (stem cells and enteroblasts) to Plasmodium berghei infection was investigated in Anopheles stephensi. The presence of developing oocysts triggers proliferation of midgut progenitors that is modulated by the Jak/STAT pathway and is proportional to the number of oocysts on individual midguts. The percentage of parasites in direct contact with enteroblasts increases over time, as progenitors proliferate.

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Magnetars are neutron stars with extremely high magnetic fields (≳10 gauss) that exhibit various X-ray phenomena such as sporadic subsecond bursts, long-term persistent flux enhancements and variable rotation-period derivative. In 2020, a fast radio burst (FRB), akin to cosmological millisecond-duration radio bursts, was detected from the Galactic magnetar SGR 1935+2154 (refs. ), confirming the long-suspected association between some FRBs and magnetars.

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We conducted a single-center study at a free community testing site in Baltimore City to assess the accuracy of self-performed rapid antigen tests (RATs) for COVID-19. Self-administered BinaxNOW RATs were compared with clinician-performed RATs and against a reference lab molecular testing as the gold standard. Of the 953 participants, 14.

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Impacts of long-term fertilization and cultivation were evaluated on nematode communities associated with tall fescue turfgrass following 11 years of treatment applications. Fertilizer treatments of biosolid, synthetic, and plant-based fertilizers and cultivation treatments of 0×, 1×, and 2× aerification passes were applied to randomized and replicated tall fescue plots at the University of Maryland Paint Branch Turfgrass facility in College Park, Maryland. Free-living and plant-parasitic nematodes were identified, enumerated, and categorized into functional groups.

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Applying theories and models in leadership program and curriculum design.

New Dir Stud Leadersh

December 2023

A. James Clark School of Engineering, University of Maryland-College Park, College Park, Maryland, USA.

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A Salt Bridge and Disulfide Bond within the Lassa Virus Fusion Domain Are Required for the Initiation of Membrane Fusion.

ACS Omega

January 2024

Department of Chemistry and Biochemistry, College of Computer, Mathematics, and Natural Science, University of Maryland College Park, College Park, Maryland 20740, United States.

Infection with Lassa virus (LASV), an Old-World arenavirus that is endemic to West Africa, causes Lassa fever, a lethal hemorrhagic fever. Delivery of LASV's genetic material into the host cell is an integral component of its lifecycle. This is accomplished via membrane fusion, a process initiated by a hydrophobic sequence known as the fusion domain (FD).

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Evaluating the Use of ChatGPT to Accurately Simplify Patient-centered Information about Breast Cancer Prevention and Screening.

Radiol Imaging Cancer

March 2024

From the University of Maryland Medical Intelligent Imaging (UM2ii) Center, Department of Diagnostic Radiology and Nuclear Medicine, University of Maryland School of Medicine, 670 W Baltimore St, First Floor, Rm 1172, Baltimore, MD 21201 (H.L.H., A.K.G., J.J., P.H.Y.); The Russell H. Morgan Department of Radiology and Radiological Science, Johns Hopkins University School of Medicine, Baltimore, Md (E.B.A., E.T.O.); Department of Radiology, Division of Breast Imaging, Massachusetts General Hospital, Boston, Mass (M.B.); Malone Center for Engineering in Healthcare, Whiting School of Engineering, Johns Hopkins University, Baltimore, Md (P.H.Y.); and Fischell Department of Bioengineering, A. James Clark School of Engineering, University of Maryland-College Park, College Park, Md (P.H.Y.).

Purpose To evaluate the use of ChatGPT as a tool to simplify answers to common questions about breast cancer prevention and screening. Materials and Methods In this retrospective, exploratory study, ChatGPT was requested to simplify responses to 25 questions about breast cancer to a sixth-grade reading level in March and August 2023. Simplified responses were evaluated for clinical appropriateness.

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Purpose: The AAST Organ Injury Scale is widely adopted for splenic injury severity but suffers from only moderate inter-rater agreement. This work assesses SpleenPro, a prototype interactive explainable artificial intelligence/machine learning (AI/ML) diagnostic aid to support AAST grading, for effects on radiologist dwell time, agreement, clinical utility, and user acceptance.

Methods: Two trauma radiology ad hoc expert panelists independently performed timed AAST grading on 76 admission CT studies with blunt splenic injury, first without AI/ML assistance, and after a 2-month washout period and randomization, with AI/ML assistance.

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Evaluation of an Online Training Course for Childcare Providers Participating in the CACFP Infant Feeding Program.

Matern Child Health J

March 2024

Department of Nutrition and Food Sciences, College of Agriculture and Natural Resources, University of Maryland College Park, 0112 Skinner Building, 4300 Chapel Lane, College Park, MD, 20742, USA.

Introduction: The Child and Adult Care Food Program (CACFP) provides reimbursement for meals and snacks offered in participating centers and issues nutrition standards, including guidelines for feeding infants in childcare settings. Offering training to childcare providers participating in the CACFP is necessary to ensure compliance with nutrition standards in childcare settings.

Methods: A State Department of Education and University Extension system collaborated to develop an online nutrition training course for childcare providers.

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Disparities in socioeconomic status (SES) lead to unequal access to financial and social support. These disparities are believed to influence reward sensitivity, which in turn are hypothesized to shape how individuals respond to and pursue rewarding experiences. However, surprisingly little is known about how SES shapes reward sensitivity in adolescence.

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Parental language input influences child language outcomes but may vary based on certain characteristics. This research examined how parental language differs during two contexts for toddlers at varying likelihood of autism based on their developmental skills. Parental language (quantity, quality, and pragmatic functions) was analyzed during dyadic play and mealtime interactions as a secondary data analysis of observational data from a study of toddlers at elevated and lower likelihood of autism.

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Tissues are active materials where epithelial turnover, immune surveillance, and remodeling of stromal cells such as macrophages all regulate form and function. Scattering modalities such as Brillouin microscopy (BM) can non-invasively access mechanical signatures at GHz. However, our traditional understanding of tissue material properties is derived mainly from modalities which probe mechanical properties at different frequencies.

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We need to make progress on blunted affect: A commentary.

Schizophr Res

February 2024

Department of Psychiatry, University of Maryland School of Medicine, 717 W. Lombard St. 5th Floor, Baltimore, MD 21201, United States of America; VA Capital Healthcare Network Mental Illness Research, Education, and Clinical Center (MIRECC), Veterans Affairs Maryland Health Care System (Baltimore Annex), 209 West Fayette Street, Baltimore, MD 20210, United States of America. Electronic address:

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GZMK+CD8+ T cells Target A Specific Acinar Cell Type in Sjögren's Disease.

Res Sq

July 2024

Salivary Disorders Unit, National Institute of Dental and Craniofacial Research, National Institutes of Health, Bethesda, MD, USA.

Article Synopsis
  • Sjögren's Disease (SjD) is an autoimmune disorder affecting salivary glands, but the cause and effective treatments are still unclear.
  • Researchers used advanced techniques like single-cell and spatial transcriptomics to analyze both healthy and diseased salivary glands, revealing key differences in cellular composition.
  • The study found that specific immune cells, particularly +CD8 T cells, are involved in damaging secretory cell types in SjD, highlighting the complex immune interactions that contribute to the disease's progression.
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Religion and spirituality (R/S) have been linked to better physical and mental health. The US government has funded several research studies that include a focus on R/S but the amount of support over the last several years appears to be declining. To better understand these funding trends for R/S and health research, we chose relevant comparisons from projects that include a focus on social support and optimism.

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Centrioles are subcellular organelles found at the cilia base with an evolutionarily conserved structure and a shock absorber-like function. In sperm, centrioles are found at the flagellum base and are essential for embryo development in basal animals. Yet, sperm centrioles have evolved diverse forms, sometimes acting like a transmission system, as in cattle, and sometimes becoming dispensable, as in house mice.

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Multiscale Molecular Dynamics Simulations of the Homodimer Accessory Protein ORF7b of SARS-CoV-2.

J Phys Chem B

January 2024

Department of Chemical and Biomolecular Engineering, University of Maryland College Park, College Park, Maryland 20742, United States.

The SARS-CoV-2 ORF7b protein has drawn attention for its potential role in viral pathogenesis, but its structural details and lateral membrane associations remain elusive. In this study, we conducted multiscale molecular dynamics simulations to provide detailed molecular insights of the protein's dimerization, which is crucial for unraveling its structural model of protein-protein interface important to regulating cellular immune response. To gain a deeper understanding of homodimer configurations, we employed a machine learning algorithm for structural-based clustering.

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Premise: The genus (Calceolariaceae) is emblematic of the Andes, is hypothesized to have originated as a recent, rapid radiation, and has important taxonomic needs. Additionally, the genus is a model for the study of specialized pollination systems, as its flowers are nectarless and many offer floral oils as a pollination reward collected by specialist bees. Despite their evolutionary and ecological significance, obtaining a resolved phylogeny for the group has proved difficult.

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It has long been recognized that an individual's experiences can metaphorically 'get under the skin' and become biologically embedded, thus affecting behavior and life outcomes (Hertzman, 2012). While this term is most often used to describe how adverse experiences influence biological process, it is rarely discussed how the same can be said of positive experiences, such as intervention to prevent or treat negative outcomes. In their annual review, Nelson et al.

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Article Synopsis
  • The angiotensin type 2 receptor (ATR) plays a crucial but still unclear role in lung health, particularly in alveolar fibroblasts, contrasting with the angiotensin type 1 receptor (ATR) that is found mainly in lung pericytes.
  • Disruption of ATR leads to increased oxidative stress and worsened lung permeability, especially during Hyperoxic Acute Lung Injury (HALI), with aging mice exhibiting more severe lung damage and higher mortality when lacking ATR.
  • Research indicates that using Losartan to block ATR may not offer protective benefits in ATR-deficient mice, while the ATR agonist Compound 21 (C21) shows promise in reversing lung damage, suggesting a shift in treatment strategies to enhance ATR function instead of blocking it
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Comparative proteomic analysis identifies proteins associated with arbuscular mycorrhizal symbiosis in .

Front Plant Sci

November 2023

National Key Laboratory for Germplasm Innovation & Utilization of Horticultural Crops, College of Horticulture and Forestry Sciences, Huazhong Agricultural University, Wuhan, China.

Citrus, one of the most widely cultivated fruit crops in the world, relies on arbuscular mycorrhizal fungi (AMF) to absorb nutrients and water from soil. However, the molecular mechanism of AM symbiosis (AMS) in citrus in general have largely been understudied. Here, using a TMT labeling proteomic approach, we identified 365 differentially expressed proteins (DEPs) in roots of (a common citrus rootstock) upon colonization as compared with uninoculated roots, of which 287 were up-regulated and 78 were down-regulated.

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Pre-saccadic Neural Enhancements in Marmoset Area MT.

J Neurosci

January 2024

Brain and Cognitive Sciences, University of Rochester, Rochester 14627-0268, New York

Each time we make an eye movement, attention moves before the eyes, resulting in a perceptual enhancement at the target. Recent psychophysical studies suggest that this pre-saccadic attention enhances the visual features at the saccade target, whereas covert attention causes only spatially selective enhancements. While previous nonhuman primate studies have found that pre-saccadic attention does enhance neural responses spatially, no studies have tested whether changes in neural tuning reflect an automatic feature enhancement.

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Specimens of an egg parasitoid wasp, Johnson (Platygastroidea, Scelionidae), were reared from stink bug egg masses collected in the wild, in Maryland, United States. The egg masses were identified morphologically as (Stål), Stål and Dallas (Hemiptera, Pentatomidae). Molecular tools were used to further identify the egg masses as (Say) and (Say).

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