13,770 results match your criteria: "CO ¶University of Colorado School of Medicine[Affiliation]"

Human recombination-activating gene (RAG) deficiency can manifest with distinct clinical and immunological phenotypes. By applying a multiomics approach to a large group of -mutated patients, we aimed at characterizing the immunopathology associated with each phenotype. Although defective T and B cell development is common to all phenotypes, patients with hypomorphic variants can generate T and B cells with signatures of immune dysregulation and produce autoantibodies to a broad range of self-antigens, including type I interferons.

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Purpose: Uncorrected visual impairment (VI) significantly impacts life quality and exacerbates age-related health issues. Social determinants of health (SDOH) are associated with uncorrected VI, but quantitative evidence is limited. This study investigated the link between SDOH and uncorrected VI among aging adults to identify disparities and improve vision care.

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Evoked potential metrics extracted from an EEG exam can provide novel sources of information regarding brain function. While the P300 occurring around 300 ms post-stimulus has been extensively investigated in relation to mild cognitive impairment (MCI), with decreased amplitude and increased latency, the P200 response has not, particularly in an oddball-stimulus paradigm. This study compares the auditory P200 amplitudes between MCI (28 patients aged 74(8)) and non-MCI, (35 aged 72(4)).

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Recessive dystrophic epidermolysis bullosa (RDEB) is a genetic disorder due to pathogenic variants in the COL7A1 gene. In this study we determined the association between different categories of COL7A1 variants and clinical disease severity in 236 RDEB patients in North America. Published reports or in-silico predictions were used to assess the impact of pathogenic variants in COL7A1 on type VII collagen (C7) protein function.

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Background: Determining why some upper respiratory illnesses provoke asthma exacerbations remains an unmet need.

Objective: To identify transcriptome-wide gene expression changes associated with colds that progress to exacerbation.

Methods: 208 urban children (6-17 years) with exacerbation-prone asthma were prospectively monitored for up to two cold illnesses.

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Venoarterial extracorporeal membrane oxygenation (VA ECMO) may provide temporary hemodynamic support for patients with severe vasodilatory shock due to toxicologic ingestion. In a series of 10 cases of children less than 18 years of age who received VA ECMO support for toxicologic-induced vasodilatory shock, there were eight survivors and two nonsurvivors who died of significant neurologic injury. Upon initiation of ECMO support, survivors had decline in Vasoactive-Inotrope Scores (VIS).

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Introduction: Alcohol intoxication significantly increases an individual's risk for a variety of injuries including craniofacial injuries, although this research is limited to adults. Further research is needed on pediatric craniofacial injuries related to alcohol use in children, a group inherently different in anatomy and developmental considerations from adults. This study aims to identify alcohol-related craniofacial injury patterns, injury mechanisms, and patient disposition in the pediatric population presenting to the emergency department.

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Aim: Lebrikizumab is an interleukin (IL)-13 inhibitor that specifically blocks IL-13 signaling. Here, we report the effects of lebrikizumab on asthma serum biomarkers in 2 phase 3 clinical studies.

Methods: LAVOLTA I and LAVOLTA II are replicate, double-blind, placebo-controlled trials with 52-week placebo-controlled treatment periods that evaluated lebrikizumab 37.

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Objective: This qualitative study aimed to understand facilitators and barriers to implementation of interventions to improve guideline-concordant antibiotic duration prescribing for pediatric acute otitis media (AOM).

Design: Clinicians and clinic administrators participated in semi-structured qualitative interviews, and parents of children 2 years of age or older with a recent diagnosis of AOM participated in focus groups. The Practical Robust Implementation and Sustainability Model (PRISM) guided the study.

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Death and survival of gut CD4 T cells following HIV-1 infection ex vivo.

PNAS Nexus

November 2024

Division of Infectious Diseases, Department of Medicine, University of Colorado School of Medicine, 12700 E 19th Ave, Mail Stop B168, Aurora, CO 80045, USA.

The gastrointestinal tract is ground zero for the massive and sustained CD4 T cell depletion during acute HIV-1 infection. To date, the molecular mechanisms governing this fundamental pathogenic process remain unclear. HIV-1 infection in the gastrointestinal tract is associated with chronic inflammation due to a disrupted epithelial barrier that results in microbial translocation.

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We examined fatigue among emergency department (ED) clinicians. ED clinicians are susceptible to burnout, because of fatigue. Fatigue represents a latent hazard in ED care, being associated with impaired clinician performance, poor patient outcomes, and a negative impact on patient safety.

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Guidelines in statistical modeling for genomics hold that simpler models have advantages over more complex ones. Potential advantages include cost, interpretability, and improved generalization across datasets or biological contexts. We directly tested the assumption that small gene signatures generalize better by examining the generalization of mutation status prediction models across datasets (from cell lines to human tumors and vice versa) and biological contexts (holding out entire cancer types from pan-cancer data).

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Objective: To better understand the clinical phenotype of Ménière's disease (MD), we examined family history, thyroid disorder, migraine, and associated disorders in complaints of people living with MD.

Method: We designed the study as a retrospective and examined data gathered from 912 participants with MD. Their data were originally collected by the Finnish Ménière Federation (FMF).

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Objectives: To determine the association of whole blood and other blood products (components, prothrombin complex concentrate, and fibrinogen concentrate) with the development of acute respiratory distress syndrome (ARDS) among blood recipients.

Design: Retrospective cohort study.

Setting: American College of Surgeons Trauma Quality Improvement Program (TQIP) database between 2020 and 2021.

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Objectives: Diabetes mellitus has been associated with greater difficulty of tracheal intubation in the operating room. This relationship has not been examined for tracheal intubation of critically ill adults. We examined whether diabetes mellitus was independently associated with the time from induction of anesthesia to intubation of the trachea among critically ill adults.

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Introduction: A primary objective when performing a total hip arthroplasty (THA) is to restore hip biomechanics in accordance with a chosen surgical plan. The aim of this study was to assess the accuracy of a 3D-printed patient-specific guide for delivering a planned femoral osteotomy for both a posterior and an anterior approach.

Methodology: 40 patients (20 anterior and 20 posterior) scheduled for THA received a preoperative work-up allowing for patient-specific implant sizing and positioning.

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Oral Delivery of miR146a Conjugated to Cerium Oxide Nanoparticles Improves an Established T Cell-Mediated Experimental Colitis in Mice.

Pharmaceutics

December 2024

Laboratory for Fetal and Regenerative Biology, Department of Surgery, University of Arizona Tucson College of Medicine, Banner Children's at Diamond Children's Medical Center, 1656 E Mabel St, Rm 230, Tucson, AZ 85721, USA.

Dysregulated inflammation and oxidative stress are strongly implicated in the pathogenesis of inflammatory bowel disease. We have developed a novel therapeutic that targets inflammation and oxidative stress. It is comprised of microRNA-146a (miR146a)-loaded cerium oxide nanoparticles (CNPs) (CNP-miR146a).

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Enhancement of Human Immunodeficiency Virus-Specific CD8 T Cell Responses with TIGIT Blockade Involves Trogocytosis.

Pathogens

December 2024

Immunology and Infectious Diseases Program, Division of BioMedical Sciences, Faculty of Medicine, Memorial University of Newfoundland, St. John's, NL A1B 3V6, Canada.

Natural killer (NK) and CD8 T cell function is compromised in human immunodeficiency virus type 1 (HIV-1) infection by increased expression of inhibitory receptors such as TIGIT (T cell immunoreceptor with Ig and ITIM domains). Blocking inhibitory receptors or their ligands with monoclonal antibodies (mAb) has potential to improve antiviral immunity in general and facilitate HIV eradication strategies. We assessed the impact of TIGIT engagement and blockade on cytotoxicity, degranulation, and interferon-gamma (IFN-γ) production by CD8 T cells from persons living with HIV (PLWH).

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DEAD/H Box 5 (DDX5) Augments E2F1-Induced Cell Death Independent of the Tumor Suppressor p53.

Int J Mol Sci

December 2024

Department of Biomedical Sciences, School of Biological and Environmental Sciences, Kwansei Gakuin University, 1 Gakuen Uegahara, Sanda 669-1330, Hyogo, Japan.

In almost all cancers, the p53 pathway is disabled and cancer cells survive. Hence, it is crucially important to induce cell death independent of p53 in the treatment of cancers. The transcription factor E2F1 is controlled by binding of the tumor suppressor pRB, and induces apoptosis by activating the gene, an upstream activator of p53, when deregulated from pRB by loss of pRB function.

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Leveraging Large Language Models in Radiology Research: A Comprehensive User Guide.

Acad Radiol

January 2025

Department of Radiology, Charles E. Schmidt College of Medicine, Florida Atlantic University, Boca Raton, FL 33431 (M.R.). Electronic address:

Large Language Models (LLMs) such as ChatGPT have been increasingly integrated into radiology research, revolutionizing the research landscape. The Radiology Research Alliance (RRA) of the Association for Academic Radiology (AAR) has convened a Task Force to develop this guide to help radiology researchers responsibly adopt LLM technologies. LLMs can improve various phases of the research process by helping to automate literature reviews, generate research questions, analyze complex datasets, and draft manuscripts.

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Targeted kinase inhibitors are well known for their promiscuity and off-target effects. Herein, we define an off-target effect in which several clinical BRAF inhibitors, including the widely used dabrafenib and encorafenib, interact directly with GCN2 to activate the Integrated Stress Response and ATF4. Blocking this off-target effect by co-drugging with a GCN2 inhibitor in A375 melanoma cells causes enhancement rather than suppression of cancer cell outgrowth, suggesting that the off-target activation of GCN2 is detrimental to these cells.

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Objective: To evaluate if peer relationship ratings differ among adolescents who sustain a sport-related concussion compared to those who sustain a non-sport-related concussion.

Study Design: We conducted a cross-sectional investigation of 123 adolescents who sustained a concussion within 21 days before their initial post-injury evaluation (mean = 9.2 ± 3.

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Background And Objectives: Selective pressures on human childbirth have led to the evolution of cooperative birth practices, with birth attendants playing a crucial role in providing emotional support during labor.

Methodology: We leveraged COVID-19-related healthcare disruptions to investigate the impact of the evolutionary mismatch in the availability of emotional support persons on perceived birth stress among a US-based convenience sample ( = 1082).

Results: Individuals who stated during pregnancy that they desired support from their partner or a doula but who did not receive this support had significantly higher perceived childbirth stress ( = 12.

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Feedback curricula in medical education typically cover only the uncontextualized basics of feedback. We created a self-paced, online course that covered advanced feedback techniques with intentional inclusion of social dynamics that can influence feedback processes. Results revealed significant improvements in participant feedback orientation, feedback-seeking behaviors, and perceptions of feedback environment.

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Unlabelled: Mindfulness is defined as nonjudgmentally and purposefully paying attention in the present moment. Mindfulness may be a valuable tool in the remediation armamentarium, useful in bringing attention to an individual's struggles. However, such application has largely been unexplored.

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