1,209 results match your criteria: "and David Geffen School of Medicine at University of California Los Angeles[Affiliation]"

Background: FGFR2/3, MTAP and ERBB2 genomic alterations have treatment targets in advanced urothelial carcinoma (aUC). These alterations may affect tumor microenvironment and outcomes with immune checkpoint inhibitors (ICIs) in aUC.

Patients And Methods: We identified patients with available genomic data in our multi-institution cohort of patients with aUC treated with ICI.

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Objectives: The 2022 US Supreme Court decision dramatically shifted the legal landscape in health care, leaving state legislatures to redefine the ethics of medical practice. As gold-standard medical procedures become banned and criminalized, physicians are facing heightened legal uncertainty and grappling with moral dilemmas of where and how to practice. This study aimed to quantitatively assess trends in legal concern among medical students and identify correlations with decision making regarding future medical training.

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Organelles such as mitochondria, lysosomes, peroxisomes, and the endoplasmic reticulum form highly dynamic cellular networks and exchange information through sites of physical contact. While each organelle performs unique functions, this inter-organelle crosstalk helps maintain cell homeostasis. Age-related macular degeneration (AMD) is a devastating blinding disease strongly associated with mitochondrial dysfunction, oxidative stress, and decreased clearance of cellular debris in the retinal pigment epithelium (RPE).

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Purpose: Teprotumumab, a novel human monoclonal antibody, has been shown to reverse the clinical manifestations of thyroid eye disease. Previous reports have suggested that it demonstrates disease-modifying properties through the reduction of orbital fat and muscle volumes. This study aims to analyze orbital volumetric change following treatment and to identify clinical and radiological predictors of response.

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Background: Psoriasis is a chronic inflammatory skin disease often associated with obesity. Psoriasis therapies may be less effective in patients with obese. The purpose of this expert consensus panel is to evaluate the relationship between obesity and efficacy of psoriasis therapies, thereby optimizing patient care.

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Background: Intimate partner violence affects about a third of women in their lifetimes and can result in short- and long-term health consequences, including less favorable performance on measures of cognitive function.

Objectives: We assess whether experiencing physical intimate partner violence in midlife was associated with steeper declines in subsequent tests of cognitive performance.

Design: This study used data from 1713 women in the longitudinal cohort Study of Women's Health Across the Nation to relate baseline information on physical intimate partner violence to declines in scores from the Symbol Digit Modalities Test, the East Boston Memory Test and the Digit Span Backwards spanning follow-up visits 7 through 15.

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Adaptive Platform Trials in Stroke.

Stroke

January 2025

Berry Consultants LLC, Austin, TX (E.L., A.M.C., S.M.B., R.J.L.).

Clinical trials of treatments for stroke have generally utilized 2-arm, randomized designs to evaluate a single intervention against a control. Running separate clinical trials, with each addressing a single therapeutic question, is resource intensive and slows evidence generation, especially in a field with rapidly expanding treatment options and evolving practices. Platform trials-randomized clinical trials designed to evaluate multiple interventions that may enter and exit the ongoing platform based on a master protocol-accelerate the investigation of multiple therapeutic options within a single infrastructure.

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Objective: Assessing the quality of human papillomavirus (HPV) vaccination-related content on TikTok is crucial due to its popularity among adolescents. We assessed these videos while comparing the content and quality of videos with and without physician involvement.

Study Design: Cross-sectional cohort analysis.

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Purpose: To compare regression rates, characteristics, and surgical outcomes of thyroid eye disease patients who underwent orbit, strabismus, or eyelid surgery at various times during or after teprotumumab treatment.

Design: Multicenter, retrospective, observational cohort study.

Participants: Adult patients (age >18) with a minimum of 4 infusions of teprotumumab treatment for thyroid eye disease who had had eye surgery during or after treatment.

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There is a growing consensus that brain development in Huntington's disease (HD) is abnormal, leading to the idea that HD is not only a neurodegenerative but also a neurodevelopmental disorder. Indeed, structural and functional abnormalities have been observed during brain development in both humans and animal models of HD. However, a concurrent study of cortical and striatal development in a genetic model of HD is still lacking.

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Article Synopsis
  • Macropinocytosis is a survival strategy used by cancer cells, especially in nutrient-poor environments, relying heavily on glutamine to sustain themselves, particularly in pancreatic ductal adenocarcinoma (PDAC) cells.
  • The atypical protein kinase C (aPKC) enzymes, specifically PKCζ and PKCι, play a crucial role in regulating macropinocytosis by interacting with scaffold proteins that influence cell structure and function.
  • The research shows that aPKCs enhance macropinocytosis through the relocation of Par3 to microtubules, and their depletion adversely affects cell viability, which can be reversed by restoring macropinocytosis, highlighting the significance of aPKCs in supporting
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Introduction: RELAY, a global double-blind, placebo-controlled phase 3 study (NCT02411448) found statistically significant improvement in progression-free survival (primary end point) for ramucirumab (RAM) plus erlotinib (ERL) (RAM + ERL) in patients with untreated EGFR-mutated metastatic NSCLC (hazard ratio [HR] = 0.59, 95% confidence interval [CI]: 0.46-0.

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Article Synopsis
  • Protein-energy wasting (PEW) is a significant issue in patients with chronic kidney disease (CKD), especially as the disease advances, leading to increased risks of hospitalization and mortality.
  • Research indicates that low levels of serum albumin, body mass index (BMI), and inadequate dietary intake of energy and protein are linked to the progression of CKD.
  • Effective management of PEW may involve a tailored nutrition plan, including a moderately low protein diet and appropriate supplementation, alongside addressing other health conditions and lifestyle factors.
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Electronic cigarettes alter cardiac rhythm and heart rate variability hyperacutely in mice.

Toxicol Appl Pharmacol

November 2024

Division of Cardiology, David Geffen School of Medicine at University of California Los Angeles, Los Angeles, California, United States of America; Department of Environmental Health Sciences, Fielding School of Public Health at University of California Los Angeles, Los Angeles, California, United States of America; Environmental and Molecular Toxicology Interdepartmental Program, University of California Los Angeles, Los Angeles, California, United States of America; Molecular Biology Institute, University of California Los Angeles, Los Angeles, California, United States of America. Electronic address:

Article Synopsis
  • The study investigates how brief electronic cigarette (EC) exposures affect heart rate (HR) and heart rate variability (HRV) in mice, focusing on the impact of timing and frequency of these exposures.
  • EC exposure led to noticeable changes in HR and HRV, including bradycardia and increased time domain parameters during exposure, with varying effects observed across the three weeks of the experiment.
  • Additionally, the study found that ECs caused prooxidative effects in the lungs, indicating potential harm beyond just heart rate changes.
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Panic Attacks in the Presentation of COVID-19.

Prim Care Companion CNS Disord

November 2024

Department of Psychiatry and Biobehavioral Sciences, David Geffen School of Medicine at University of California Los Angeles, Los Angeles, California.

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Introduction: Stroke mortality has declined, with differential changes by race; stroke is now the 5th leading cause of death overall, but 2nd leading cause of death in Black individuals. Little is known about recent race/ethnic and sex trends in in-hospital mortality after acute ischemic stroke (AIS) and whether system-level factors contribute to possible differences.

Methods: Using the National Inpatient Sample, adults (≥18 years) with a primary diagnosis of AIS from 2006 to 2017 (n = 643,912) were identified.

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Objective: Human papillomavirus (HPV) is a significant driver of elevated risk for oropharyngeal squamous cell carcinoma (OPSCC). In 2018, HPV vaccination eligibility was expanded to men and women aged 27 to 45. We evaluated changes in awareness of HPV, its association with OPSCC, and HPV vaccination among all US adults between 2018 and 2020, focusing on those aged 27 to 45.

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Tau seeds catalyze fibril-type structures from GFP tau biosensor cells.

Structure

December 2024

Department of Pharmacology and Pharmaceutical Sciences, University of Southern California Mann School of Pharmacy and Pharmaceutical Sciences, 1985 Zonal Avenue, Los Angeles, CA 90089-9121, USA. Electronic address:

Fibril-type aggregates of tau occur in Alzheimer's disease (AD) and dozens of tauopathies. Fibrils catalyze aggregation by prion-like seeding, which in part underlies disease progression. Seeding by recombinant and brain-derived tau fibrils is measured using biosensor cells that express aggregation-prone tau mutants fused with fluorescent reporter proteins.

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Immunocytochemistry assessment of vocal fold regeneration after cell-based implant in rabbits.

Laryngoscope Investig Otolaryngol

October 2024

Research Service Greater Los Angeles VAHS Los Angeles California USA.

Article Synopsis
  • The study explores the use of cell-based outer vocal fold replacement (COVR) for severe vocal fold scarring or cancer recovery, specifically using human adipose-derived stem cells (ASC) in rabbits.
  • Immunocytochemistry was employed to analyze samples taken two months post-implantation, focusing on markers for human cells and other cellular features.
  • The results indicate that implanted human ASC persist and some express CD31, while smooth muscle actin was present across all samples, suggesting a mix of implanted and host cells creating a hybrid vocal fold structure.
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Article Synopsis
  • The study aimed to assess how effective track cautery is during lung microwave ablation (MWA) in minimizing adverse events after the procedure.
  • A total of 365 MWA sessions were analyzed, comparing patients who underwent track cautery during antenna removal to those who did not, evaluating post-procedural complications like pneumothorax and pleural effusion.
  • Results indicated that track cautery significantly reduced rates of enlarging pneumothorax, delayed pneumothorax, and pleural effusion, while factors like emphysema and tumor size were linked to higher adverse event rates.
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Beyond borders: The global impact of violating reproductive human rights.

Int J Gynaecol Obstet

December 2024

Department of Obstetrics and Gynecology, University Unisanitas and Militar Nueva Granada, PMA Fertility Center, Bogotá, Colombia.

Article Synopsis
  • - The right to sexual health is a crucial aspect of the basic right to health, allowing individuals to make free choices about their sexual and reproductive health without facing discrimination.
  • - This right is interconnected with other human rights, such as access to information and equality, and its fulfillment enhances not only maternal and neonatal health but also the safety of healthcare workers and the delivery of essential medical services.
  • - Despite its importance, many individuals face violations of their sexual and reproductive rights due to increasing stigma and discrimination, particularly related to abortion and contraception, which FIGO aims to combat by advocating for accessible, equitable care and supporting vulnerable populations.
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Retinal ganglion cell vulnerability to pathogenic tau in Alzheimer's disease.

bioRxiv

September 2024

Department of Neurosurgery, Maxine Dunitz Neurosurgical Research Institute, Cedars-Sinai Medical Center, Los Angeles, CA, USA.

Article Synopsis
  • Pathological tau isoforms, particularly hyperphosphorylated tau at serine 396, and tau oligomers were found in the retinas of patients with mild cognitive impairment (MCI) and Alzheimer's disease (AD), indicating a potential link between tauopathy and retinal changes.
  • The study analyzed retinal cross-sections from 25 patients with MCI or AD and 16 cognitively normal controls, revealing a significant reduction in retinal ganglion cells (RGCs) and increased signs of cell distress in MCI and AD patients compared to controls.
  • Findings showed that higher amounts of pS396-tau in RGCs were strongly correlated with decreased RGC integrity and related to severity in cognitive decline, suggesting that retinal
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