106,798 results match your criteria: "Oregon; and Littleton Adventist Hospital D.V.[Affiliation]"

Association between axial elongation and corneal topography in children undergoing orthokeratology with different back optic zone diameters.

Eye Vis (Lond)

January 2025

Contact Lens and Visual Optics Laboratory, Optometry and Vision Science, Centre for Vision and Eye Research, Queensland University of Technology, Brisbane, Australia.

Purpose: To explore the associations between myopia defocus dosage (MDD), aberration coefficients (primary spherical aberration and coma), and axial elongation in children undergoing orthokeratology (ortho-k) with back optic zone diameters (BOZD) of 5 mm and 6 mm over 2 years.

Methods: Data from 80 participants from two ortho-k studies were analyzed: 22 and 58 children wore lenses with 5-mm and 6-mm BOZD, respectively. Four MDD metrics were calculated from corneal topography data over a 5-mm pupil for the 1-month and 24-month visits: the circumferential, flat, steep, and volumetric MDD.

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Article Synopsis
  • In 1974, lesbian intentional communities emerged in rural Oregon, influenced by the back-to-the-land movement and women's liberation, allowing members to challenge traditional gender norms through a unique ecofeminist lifestyle.
  • The land they occupy, which has been affected by logging, serves as a conservation site for old-growth forests, emphasizing their commitment to environmental preservation and their connection to non-human life.
  • The essay combines past research with personal reflections and interviews, exploring the intimate relationships within the lesbian land community and their potential significance for future queer and feminist ecological movements.
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Exposure of Mycobacteriodes abscessus clones to mucin affects bacterial phenotype.

Sci Rep

January 2025

Department of Biomedical Sciences, Carlton College of Veterinary Medicine, Oregon State University, Corvallis, USA.

In the past 20 years infections caused by Mycobacterioides abscessus have become increasingly common in patients with chronic lung conditions. The microorganisms are also resistant to a number of antibiotic classes, making treatment challenging. To begin understanding how the bacterium adapts to the lung environment, pure colonies of M.

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Large emissions of CO and CH due to active-layer warming in Arctic tundra.

Nat Commun

January 2025

Climate and Ecosystem Sciences Division, Berkeley Lab, Berkeley, CA, USA.

Climate warming may accelerate decomposition of Arctic soil carbon, but few controlled experiments have manipulated the entire active layer. To determine surface-atmosphere fluxes of carbon dioxide and methane under anticipated end-of-century warming, here we used heating rods to warm (by 3.8 °C) to the depth of permafrost in polygonal tundra in Utqiaġvik (formerly Barrow), Alaska and measured fluxes over two growing seasons.

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Introduction: Inflammatory bowel disease (IBD) is a global health issue profoundly impacting quality of life. The United States accounts for nearly a quarter of the world's IBD patients, with the highest prevalence rates. This study aims to identify the demographic and regional trends of IBD-related mortality in the U.

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Protective antibodies target cryptic epitope unmasked by cleavage of malaria sporozoite protein.

Science

January 2025

Antibody Biology Unit, Laboratory of Immunogenetics, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Rockville, MD, USA.

The most advanced monoclonal antibodies (mAbs) and vaccines against malaria target the central repeat region or closely related sequences within the circumsporozoite protein (PfCSP). Here, using an antigen-agnostic strategy to investigate human antibody responses to whole sporozoites, we identified a class of mAbs that target a cryptic PfCSP epitope that is only exposed after cleavage and subsequent pyroglutamylation (pGlu) of the newly formed N terminus. This pGlu-CSP epitope is not targeted by current anti-PfCSP mAbs and is not included in the licensed malaria vaccines.

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Objective: Several studies have suggested that depression may be associated with increased risk of ovarian cancer. Less is known about whether timing matters regarding when depression occurs. To provide evidence for an etiologically relevant exposure period, we examined depression occurring during the time in which precursor lesions develop and progress to invasive carcinoma with risk of developing ovarian cancer.

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Purpose: Activating T cell costimulatory receptors is a promising approach for cancer immunotherapy. In preclinical work, adding an OX40 agonist to in situ vaccination (ISV) with SD101, a TLR9 agonist, was curative in a mouse model of lymphoma. We sought to test this combination in a Phase I clinical trial for patients with low-grade B cell lymphoma.

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Pancreatic ductal adenocarcinoma (PDAC) remains one of the deadliest solid cancers; thus, identifying more effective therapies is a major unmet need. In this study, we characterized the super enhancer (SE) landscape of human PDAC to identify drivers of the disease that might be targetable. This analysis revealed MICAL2 as a super enhancer-associated gene in human PDAC, which encodes the flavin monooxygenase MICAL2 that induces actin depolymerization and indirectly promotes SRF transcription by modulating the availability of serum response factor coactivators myocardin-related transcription factors (MRTF-A and MRTF-B).

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Introduction: Primary care providers or clinicians (PCPs) have the potential to assist dermatologists in screening patients at risk for skin cancer, but require training to appropriately identify higher-risk patients, perform skin checks, recognize and biopsy concerning lesions, interpret pathology results, document the exam, and bill for the service. Very few validated dermatology training programs exist for PCPs and those that are available focus primarily on one emphasis area, which results in variable efficacy and single-topic limited scope.

Methods: We have created a free, online, continuing education program (Melanoma Toolkit for Early Detection, MTED) that allows learners to choose from a variety of multimedia tools (image recognition, videos, written material, in-person seminars, self-tests, etc.

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Introduction: With the intensification of global aging, health management for the older adult has become a significant societal concern. Addressing challenges such as data diversity, health status complexity, long-term dependence, and data privacy is crucial for predicting older adult health behaviors.

Methods: This study designs and implements a smart older adult care service model incorporating modules like multimodal data fusion, data loss processing, nonlinear prediction, emergency detection, and privacy protection.

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The successful onset of recovery of the European pine marten () in some parts of Britain through range expansion and, more recently translocation for reintroductions, has resulted in a strong interest in reintroduction projects throughout the country. However, the geographic scope and conservation goals of these initiatives are often local and lack consideration of how they fit within the wider context of national-scale pine marten conservation. Here, we aim to maximize conservation benefit strategically at a national level by developing a simple, transparent, and transferable framework based on landscape modelling methods and spatially explicit population viability analyses.

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Article Synopsis
  • The subseafloor igneous basement contains a vast microbial habitat, but little is known about the life that exists there, especially in older sections over 65 million years old.
  • Recent research tested this by analyzing samples from the Louisville Seamount Chain, finding varied cell biomass indicating the presence of microbial life in rocks older than 65 million years.
  • The dominant bacterial genes found suggest active microbial processes related to nitrogen, sulfur, metal transformations, and hydrocarbon breakdown, highlighting a much broader range of subseafloor life than previously recognized.
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The "historical myths" addressed in the target article are but one type of societal meta-narrative, a cognitive framework for understanding the story of one's group: Its origins, purpose, turning points, threats and opportunities, key relationships, and the appropriate affect for group members. Engagement with the broader literature on meta-narratives, including political and sacred myths, and on group entitativity is recommended.

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  • A team of over 180 researchers from more than 40 countries is addressing the issues related to "phantom agents," which are proposed pathogenic agents that are listed without concrete evidence of their existence.
  • These phantom agents, identified only through symptoms and lacking proper isolates or genetic data, create obstacles for trade and plant certification, making effective detection and risk assessment difficult.
  • The researchers recommend removing these agents from regulatory lists and updating standards in line with modern diagnostic methods to facilitate germplasm exchange and support global agriculture.
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Understanding the causes of past atmospheric methane (CH) variability is important for characterizing the relationship between CH, global climate and terrestrial biogeochemical cycling. Ice core records of atmospheric CH contain rapid variations linked to abrupt climate changes of the last glacial period known as Dansgaard-Oeschger (DO) events and Heinrich events (HE). The drivers of these CH variations remain unknown but can be constrained with ice core measurements of the stable isotopic composition of atmospheric CH, which is sensitive to the strength of different isotopically distinguishable emission categories (microbial, pyrogenic and geologic).

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Yellowstone Caldera is one of the largest volcanic systems on Earth, hosting three major caldera-forming eruptions in the past two million years, interspersed with periods of less explosive, smaller-volume eruptions. Caldera-forming eruptions at Yellowstone are sourced by rhyolitic melts stored within the mid- to upper crust. Seismic tomography studies have suggested that a broad region of rhyolitic melt extends beneath Yellowstone Caldera, with an estimated melt volume that is one to four times greater than the eruptive volume of the largest past caldera-forming eruption, and an estimated melt fraction of 6-28 per cent.

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Mechanical force is an essential feature for many physical and biological processes, and remote measurement of mechanical signals with high sensitivity and spatial resolution is needed for diverse applications, including robotics, biophysics, energy storage and medicine. Nanoscale luminescent force sensors excel at measuring piconewton forces, whereas larger sensors have proven powerful in probing micronewton forces. However, large gaps remain in the force magnitudes that can be probed remotely from subsurface or interfacial sites, and no individual, non-invasive sensor is capable of measuring over the large dynamic range needed to understand many systems.

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The brain's action-mode network.

Nat Rev Neurosci

January 2025

Mallinckrodt Institute of Radiology, Washington University School of Medicine, St. Louis, MO, USA.

The brain is always intrinsically active, using energy at high rates while cycling through global functional modes. Awake brain modes are tied to corresponding behavioural states. During goal-directed behaviour, the brain enters an action-mode of function.

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A smart probe for detection of sugar markers for applications in gastrointestinal barrier dysfunction.

Biosens Bioelectron

December 2024

Bio-Acoustic MEMS in Medicine (BAMM) Laboratory, Canary Center at Stanford, Department of Radiology, Stanford School of Medicine, Stanford University, Palo Alto, CA, 94304, USA. Electronic address:

Article Synopsis
  • Gastrointestinal (GI) barrier dysfunction is a critical early indicator of multiple complex diseases, but current testing methods for saccharide molecules used to assess this function are expensive and time-consuming.
  • A new one-component system utilizing a naphthyl-pyridine core and boronic acid receptor has been developed for the early detection of saccharide biomarkers like lactulose, which indicates GI barrier issues.
  • The innovative design incorporates a scalable 96-well format with gold nanoparticles and combines plasmonics and fluorescence for sensitive lactulose quantification, aiming to create an affordable and portable diagnostic tool for routine GI permeability testing.
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  • Isopropylated phenyl phosphates (IPP) are organophosphate flame retardants used in various products, but their leaching raises toxicity concerns due to limited toxicological studies.
  • Using zebrafish embryos, the study found significant biological disruptions, including morphological changes and alterations in dopamine levels, alongside behavioral deficits at low concentrations.
  • Further analysis indicated IPP inhibits retinoic acid receptor activity and caused hypermethylation in embryos, with distinct impacts observed in the eyes, revealing changes in genes related to nervous system functions.
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  • The study evaluated low-stress resin-based composites (RBCs) and their stress relaxation mechanisms, comparing them to an experimental low-stress thiourethane (TU) material.
  • The experimental composites included a mix of different dimethacrylates and barium aluminosilicate filler, with tests on polymerization kinetics and stress relaxation conducted using advanced analytical techniques.
  • Results indicated that TU-modified RBCs exhibited significantly higher polymerization conversion rates and stress reduction capabilities compared to traditional materials, with the TU composites and SDR Flow+ showing the most effective stress relaxation.
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Host response to cholestyramine can be mediated by the gut microbiota.

Microbiome Res Rep

July 2024

Department of Biomedical Sciences, Carson College of Veterinary Medicine, Oregon State University, Corvallis, OR 97331, USA.

The gut microbiota has been implicated as a major factor contributing to metabolic diseases and the response to drugs used for the treatment of such diseases. In this study, we tested the effect of cholestyramine, a bile acid sequestrant that reduces blood cholesterol, on the murine gut microbiota and metabolism. We also explored the hypothesis that some effects of this drug on systemic metabolism can be attributed to alterations in the gut microbiota.

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