977,540 results match your criteria: "California; and ††Greater Los Angeles VA Healthcare Center[Affiliation]"

The immune landscape of fetal chorionic villous tissue in term placenta.

Front Immunol

January 2025

Department of Microbiology, Immunology and Molecular Genetics, University of Kentucky, Lexington, KY, United States.

Introduction: The immune compartment within fetal chorionic villi is comprised of fetal Hofbauer cells (HBC) and invading placenta-associated maternal monocytes and macrophages (PAMM). Recent studies have characterized the transcriptional profile of the first trimester (T1) placenta; however, the phenotypic and functional diversity of chorionic villous immune cells at term (T3) remain poorly understood.

Methods: To address this knowledge gap, immune cells from human chorionic villous tissues obtained from full-term, uncomplicated pregnancies were deeply phenotyped using a combination of flow cytometry, single-cell RNA sequencing (scRNA-seq, CITE-seq) and chromatin accessibility profiling (snATAC-seq).

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Association between governmental spending on social services and health care use among low-income older adults.

Health Aff Sch

January 2025

Division of General Internal Medicine and Health Services Research, Department of Medicine, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA 90024, United States.

Prior research demonstrates that local government spending on social policies, excluding health care, is linked to improved population health. Whether such spending is associated with better access to primary care and reduced acute care utilization remains unclear. In this cross-sectional study, we evaluated the associations between county-level social spending and individual-level health care utilization among low-income Medicare beneficiaries, aged ≥65 years, from 2016 to 2018.

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On the substrate turnover rate of NBCe1 and AE1 SLC4 transporters: structure-function considerations.

Front Physiol

January 2025

Department of Medicine, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA, United States.

A transport protein's turnover rate (TOR) is the maximum rate of substrate translocation under saturating conditions. This parameter represents the number of transporting events per transporter molecule (assuming a single transport site) per second (s). From this standpoint, a transporter's TOR is similar to an enzyme's catalytic constant.

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Medicare Resource Use Differs by English Reading Proficiency.

Innov Aging

December 2024

Leonard Davis School of Gerontology, University of Southern California, Los Angeles, California, USA.

Background And Objectives: Medicare coverage decisions are complex. The Centers for Medicare & Medicaid Services (CMS) provides a hotline, handbook, and website to help Medicare beneficiaries understand their benefits and coverage options, yet it is unclear what factors affect beneficiary use of these resources. We examined limited English speaking and English reading proficiency status as predictors of CMS Medicare informational resource use in a nationally representative sample of Medicare beneficiaries.

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Environment scan of generative AI infrastructure for clinical and translational science.

Npj Health Syst

January 2025

Department of Population Health Sciences, Weill Cornell Medicine, New York, NY USA.

This study reports a comprehensive environmental scan of the generative AI (GenAI) infrastructure in the national network for clinical and translational science across 36 institutions supported by the CTSA Program led by the National Center for Advancing Translational Sciences (NCATS) of the National Institutes of Health (NIH) at the United States. Key findings indicate a diverse range of institutional strategies, with most organizations in the experimental phase of GenAI deployment. The results underscore the need for a more coordinated approach to GenAI governance, emphasizing collaboration among senior leaders, clinicians, information technology staff, and researchers.

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Fatty acid oxidation-induced HIF-1α activation facilitates hepatic urate synthesis through upregulating NT5C2 and XDH.

Life Metab

October 2024

CAS Key Laboratory of Nutrition, Metabolism, and Food Safety, Shanghai Institute of Nutrition and Health, Chinese Academy of Sciences (CAS), Shanghai 200031, China.

Dyslipidemia affects approximately half of all people with gout, and prior Mendelian randomization analysis suggested a causal role for elevated triglycerides in hyperuricemia (HU), but the underlying mechanisms remain elusive. We hypothesize that dyslipidemia promotes hepatic urate biosynthesis in HU and gout and fatty acid (FA) oxidation (FAO) drives this process. Here we developed a targeted metabolomics to quantify major metabolites in purine metabolic pathway in the sera of a human cohort with HU, gout, and normaluricemic controls.

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Background: In high-burden settings, most tuberculosis (TB) transmission likely occurs outside the home. Our qualitative study in Zambia explored the acceptability and preferences for designing TB active case finding (ACF) strategies to reach non-household contacts of people with TB.

Methods: We conducted 56 in-depth interviews with persons with TB ( = 12), TB healthcare workers (HCWs) ( = 10), TB lay HCWs ( = 10), and leaders/owners ( = 12) and attendees ( = 12) of community venue types identified as potential TB transmission locations.

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Under climate change, ecosystems are experiencing novel drought regimes, often in combination with stressors that reduce resilience and amplify drought's impacts. Consequently, drought appears increasingly likely to push systems beyond important physiological and ecological thresholds, resulting in substantial changes in ecosystem characteristics persisting long after drought ends (i.e.

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Machine learning Hubbard parameters with equivariant neural networks.

NPJ Comput Mater

January 2025

Theory and Simulation of Materials (THEOS), and National Centre for Computational Design and Discovery of Novel Materials (MARVEL), École Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland.

Density-functional theory with extended Hubbard functionals (DFT +  + ) provides a robust framework to accurately describe complex materials containing transition-metal or rare-earth elements. It does so by mitigating self-interaction errors inherent to semi-local functionals which are particularly pronounced in systems with partially-filled d and f electronic states. However, achieving accuracy in this approach hinges upon the accurate determination of the on-site and inter-site Hubbard parameters.

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Preterm Labor and Hypertensive Disorders in Adolescent Pregnancies With Diabetes Between 2006 and 2019.

Pediatr Diabetes

January 2025

Division of General Internal Medicine and Health Services Research, Department of Medicine, David Geffen School of Medicine, University of California, Los Angeles, California, USA.

Objective: We sought to evaluate the risk of preterm labor and hypertensive disorders in adolescent pregnancies with and without diabetes.

Methods: We evaluated 1,843,139 adolescents (≤20 years old) with labor and delivery admissions in the national Kids' Inpatient Database (KID) in years 2006, 2009, 2012, 2016, and 2019. International classification of disease codes was used to identify diabetes and medical factors affecting pregnancy.

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Background: Recent research indicates that the intestinal microbial community, known as the gut microbiota, may play a crucial role in the pathogenesis of nonalcoholic fatty liver disease (NAFLD). To understand this relationship, this study used a comprehensive bibliometric analysis to explore and analyze the currently little-known connection between gut microbiota and NAFLD, as well as new findings and possible future pathways in this field.

Aim: To provide an in-depth analysis of the current focus issues and research developments on the interaction between gut microbiota and NAFLD.

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Off-target evaluation is essential in preclinical safety assessments of novel biotherapeutics, supporting lead molecule selection, endpoint selection in toxicology studies, and regulatory requirements for first-in-human trials. Off-target interaction of a therapeutic antibody and antibody derivatives has been historically assessed via the Tissue Cross-Reactivity (TCR) study, in which the candidate molecule is used as a reagent in immunohistochemistry (IHC) to assess binding of the candidate molecule to a panel of human tissue sections. The TCR approach is limited by the performance of the therapeutic as an IHC reagent, which is often suboptimal to outright infeasible.

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Organic radical reactions are crucial in many areas of chemistry, including synthetic, biological, and atmospheric chemistry. We develop a predictive framework based on the interaction of molecular orbitals that operates on mechanistic-level radical reactions. Given our chemistry-aware model, all predictions are provided with different levels of interpretability.

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Multi-disciplinary research will be the key to stop, restore, and end MS.

Mult Scler

January 2025

Department of Neurology, Weill Institute for Neurosciences, University of California San Francisco, San Francisco, CA, USA.

The past 25 years have brought extraordinary advances in our understanding of MS pathogenesis and the subsequent development of effective therapies. Collaborative genetics efforts have uncovered the association of 236 common DNA variants with disease susceptibility and the first association with disease severity, paving the way to more effective therapies, particularly for progressive forms of the disease. In parallel, and in addition to established environmental disease triggers or modifiers, new collaborative work has revealed new associations with components of the gut microbiome.

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Objective: To assess the utility and challenges of using natural language processing (NLP) in electronic health records (EHRs) to ascertain health-related social needs (HRSNs) among older adults.

Study Setting And Design: We extracted HRSN information using the NLP system Clinical Text Analysis and Knowledge Extraction System (cTAKES), combined with Concept Unique Identifiers and Systematized Nomenclature for Medicine codes. We validated cTAKES performance, via manual chart review, on two HRSNs: food insecurity, which was included in the healthcare system's HRSN screening tool, and housing insecurity, which was not.

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A significant challenge in commercializing electrochemical CO reduction (COR) is achieving catalyst durability. In this study, online inductively coupled mass spectrometry (ICP-MS) was used to investigate catalyst degradation via nanoparticle detachment and/or dissolution into metal ions under COR operating conditions in 0.1 M KHCO.

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The CN stretch frequency of neutral, gas-phase 9-cyanoanthracene is 2207 cm (4.531 μm) based on high-resolution infrared absorption experiments coupled with a new hybrid anharmonic quantum chemical methodology. A broad band (full-width at half-maximum of 47 cm) is observed and assigned to multiple transitions, including the CN stretch fundamental and various combination bands that gather intensity from strong anharmonic coupling with the bright CN stretch.

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Background And Purpose: In the late 1990s, the Nordic countries, with Norway at the top, were among the countries with the highest prostate cancer mortality in the world. We present updated mortality rates from the Nordic countries and discuss possible interpretations of changes in trends.

Material And Methods: Age-standardized rates for prostate-specific mortality in 1985-2022, estimated lifetime risk of death (0-84 years) and annual changes in mortality were obtained from the NORDCAN database.

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Background: Multiple approaches exist for operative fixation of metacarpal fractures; with common treatments including lag screw fixation or open-reduction internal fixation (ORIF) with plates and screws. Recently, the adaptation of intramedullary screw (IMS) placement has allowed for an essentially closed approach with stable fixation and theoretically improved outcomes. Thus, we sought to compare such approaches to ultimately determine the superior method for achieving the goal of return to normal function.

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Background: Mohs micrographic surgery offers high cure rates of cutaneous malignancies, but surgeons are often faced with large and complicated defects after tumour removal.

Objectives: To assess the safety and complication rates of large flaps and grafts (measuring ≥30 cm) and larger complex linear closures (CLC, ≥12.5 cm, as defined by the American Medical Association Current Procedural Terminology code set), when performed under local anaesthesia.

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Background: Asymptomatic carriers significantly influence the transmission dynamics of C. difficile. This study aimed to assess the prevalence of toxigenic C.

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Objective: HIV-related stigma is a major public health concern compromising the rights and health outcomes of many people living with HIV (PLWH). Its reduction is said to be critical in strengthening the continuous efforts targeted at preventing and controlling HIV, as it directly impacts antiretroviral treatment adherence. This study examines the association between HIV-related stigma and adherence to antiretroviral therapy (ART) among PLWH in one of the 16 administrative regions of Ghana, Africa.

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Background: Telomere length is an important indicator of biological age and a complex multi-factor trait. To date, the telomere interactome for comprehending the high-dimensional biological aspects linked to telomere regulation during childhood remains unexplored. Here we describe the multi-omics signatures associated with childhood telomere length.

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