1,647 results match your criteria: "David Geffen School of Medicine at the University of California[Affiliation]"

The amnion is a thin layer of fetal origin in contact with the amniotic fluid which plays a key role at the feto-maternal interface during pregnancy. Here, we present a protocol for isolation of human and Rhesusmacaque amnion cells. We describe steps for tissue dissection, cell isolation for flow cytometry analysis, and RNA isolation for RNA sequencing library preparation and analysis.

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Background: Antibiotic overuse at hospital discharge is common, but there is no metric to evaluate hospital performance at this transition of care. We built a risk-adjusted metric for comparing hospitals on their overall post-discharge antibiotic use.

Methods: This was a retrospective study across all acute-care admissions within the Veterans Health Administration during 2018-2021.

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Article Synopsis
  • Datopotamab deruxtecan (Dato-DXd) is an antibody-drug conjugate designed to target TROP2 in solid tumors, specifically tested for safety and effectiveness in treating hormone receptor-positive and triple-negative breast cancers.
  • In a phase I trial involving 85 patients, the treatment showed an objective response rate of 26.8% for hormone receptor-positive breast cancer and 31.8% for triple-negative breast cancer, with a median progression-free survival of 8.3 months and 4.4 months, respectively.
  • The most common treatment-related side effects included stomatitis, with the study indicating that Dato-DXd has promising clinical potential and an acceptable safety profile, warranting further investigation
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Description: The American College of Physicians (ACP) developed this clinical guideline to update recommendations on newer pharmacologic treatments of type 2 diabetes. This clinical guideline is based on the best available evidence for effectiveness, comparative benefits and harms, consideration of patients' values and preferences, and costs.

Methods: This clinical guideline is based on a systematic review of the effectiveness and harms of newer pharmacologic treatments of type 2 diabetes, including glucagon-like peptide-1 (GLP-1) agonists, a GLP-1 agonist and glucose-dependent insulinotropic polypeptide agonist, sodium-glucose cotransporter-2 (SGLT-2) inhibitors, dipeptidyl peptidase-4 (DPP-4) inhibitors, and long-acting insulins, used either as monotherapy or in combination with other medications.

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  • The study investigates the changes in intraretinal hyper-reflective foci (IHRF) over two years in patients with intermediate age-related macular degeneration (AMD) using optical coherence tomography (OCT).
  • It found a significant increase in the average number of IHRF per eye after 24 months, with most eyes showing an increase in these foci.
  • The results suggest that IHRF predominantly occur in the outer retinal layers and indicate a need for further research on their role in AMD progression.
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Background: Polymorphic ventricular tachycardia (PMVT) is an unstable and often fatal cardiac tachyarrhythmia. While there are many causes of this rhythm, including electrolyte imbalances, ischemia, and genetic disorders, iatrogenic etiologies are important to recognize. Abiraterone is an androgen synthesis antagonist effective in treating prostate cancer, but here we describe a case of severe hypokalemia secondary to abiraterone resulting in polymorphic ventricular tachycardia and cardiac arrest.

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RNA: The Unsuspected Conductor in the Orchestra of Macromolecular Crowding.

Chem Rev

April 2024

RNA Systems Biology Lab, Center for Human Technologies, Istituto Italiano di Tecnologia, Via Enrico Melen, 83, 16152 Genova, Italy.

This comprehensive Review delves into the chemical principles governing RNA-mediated crowding events, commonly referred to as granules or biological condensates. We explore the pivotal role played by RNA sequence, structure, and chemical modifications in these processes, uncovering their correlation with crowding phenomena under physiological conditions. Additionally, we investigate instances where crowding deviates from its intended function, leading to pathological consequences.

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Importance: Perceived social isolation is associated with negative health outcomes, including increased risk for altered eating behaviors, obesity, and psychological symptoms. However, the underlying neural mechanisms of these pathways are unknown.

Objective: To investigate the association of perceived social isolation with brain reactivity to food cues, altered eating behaviors, obesity, and mental health symptoms.

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Background: As a subset of symptomatic discoid lateral meniscal (DLM) tears, anterior horn (AH) meniscal tears are not well studied in the pediatric population. There are even fewer studies reporting patient-reported outcomes after surgical treatment of AH tears in DLM.

Purpose: To compare reported outcomes after surgical treatment of DLM tears involving the AH versus other locations in pediatric patients.

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Objective: Standard MRI protocols lack a quantitative sequence that can be used to evaluate shunt-treated patients with a history of hydrocephalus. The objective of this study was to investigate the use of phase-contrast MRI (PC-MRI), a quantitative MR sequence, to measure CSF flow through the shunt and demonstrate PC-MRI as a useful adjunct in the clinical monitoring of shunt-treated patients.

Methods: The rapid (96 seconds) PC-MRI sequence was calibrated using a flow phantom with known flow rates ranging from 0 to 24 mL/hr.

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Understanding immune dysregulation in post-acute sequelae of COVID-19 (PASC)-The hunt for effective treatments.

J Infect

May 2024

Division of Infectious Diseases, Department of Medicine, David Geffen School of Medicine at the University of California-Los Angeles, Los Angeles, CA, USA; Department of Microbiology, Immunology, and Molecular Genetics, University of California-Los Angeles, Los Angeles, CA, USA.

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Background: The University of California's Diabetes Prevention Program (UC DPP) Initiative was implemented across all 10 UC campuses in 2018. The COVID-19 pandemic and accompanying mandates required swift changes to program delivery, including pivoting from in-person to virtual delivery (i.e.

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Ribociclib plus Endocrine Therapy in Early Breast Cancer.

N Engl J Med

March 2024

From the David Geffen School of Medicine at the University of California, Los Angeles (D. Slamon, N.M.); Republican Clinical Oncology Dispensary, Ufa (O.L.), and Moscow City Oncology Hospital No. 62, Moscow (D. Stroyakovskiy) - both in Russia; Maria Sklodowska-Curie National Research Institute of Oncology, Warsaw (Z.N.), and Centrum Onkologii Ziemi Lubelskiej im. św. Jana z Dukli, Lublin (B.K.-B.) - both in Poland; the Sarah Cannon Research Institute at Tennessee Oncology, Nashville (D.A.Y.); the National Taiwan University Hospital, National Taiwan University College of Medicine, Taipei City (C.-S.H.); University Hospital Erlangen, the Comprehensive Cancer Center Erlangen-European Metropolitan Region of Nuremberg, Friedrich-Alexander University Erlangen-Nuremberg, Erlangen (P.A.F.), and the Interdisciplinary Breast Cancer Center, Helios Klinikum Berlin-Buch, Berlin (M.U.) - both in Germany; St. Vincent's Hospital, Dublin (J.C.); Massachusetts General Hospital Cancer Center, Harvard Medical School, Boston (A.B.); the British Columbia Cancer Agency, Vancouver (S.C.), and Translational Research in Oncology (TRIO), Edmonton, AB (I.S.) - both in Canada; the Cancer Research Institute, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, South Korea (S.-A.I.); Hospital Virgen del Rocío, Seville, and Grupo Español de Investigación en Cáncer de Mama, Spanish Breast Cancer Group, Madrid - both in Spain (M.R.-B.); the Peter MacCallum Cancer Centre, Melbourne, VIC, Australia (S.L.); the Department of Medical Oncology Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing (B.X.); the Fred Hutchinson Cancer Center, University of Washington, Seattle (S.H.); the Latin American Cooperative Oncology Group, Porto Alegre, Brazil (C.B.); the Orlando Health Cancer Institute, Orlando, FL (R.M.); the National Breast Cancer Coalition, Washington, DC (F.V.); TRIO, Paris (K.A.); TRIO, Montevideo, Uruguay (R.F.); Novartis Pharmaceuticals, East Hanover, NJ (Y.J., F.G., Z.L., J.P.Z., A.C.); Novartis Pharma, Basel, Switzerland (T.T.); and the Department of Breast Medical Oncology, University of Texas M.D. Anderson Cancer Center, Houston (G.H.).

Background: Ribociclib has been shown to have a significant overall survival benefit in patients with hormone receptor (HR)-positive, human epidermal growth factor receptor 2 (HER2)-negative advanced breast cancer. Whether this benefit in advanced breast cancer extends to early breast cancer is unclear.

Methods: In this international, open-label, randomized, phase 3 trial, we randomly assigned patients with HR-positive, HER2-negative early breast cancer in a 1:1 ratio to receive ribociclib (at a dose of 400 mg per day for 3 weeks, followed by 1 week off, for 3 years) plus a nonsteroidal aromatase inhibitor (NSAI; letrozole at a dose of 2.

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Article Synopsis
  • Phonatory instabilities and sudden changes in vocal registers can occur during singing, but the underlying mechanisms remain poorly understood.
  • Researchers studied this by varying laryngeal muscle activation and airflow in a canine larynx model to examine how these factors affect phonation.
  • They found a specific instability region around 400 Hz, suggesting that better control of muscle activation, especially of the thyroarytenoid muscle, could help prevent these issues in singing.
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Importance: COVID-19 prompted rapid development of scarce resource allocation (SRA) policies to be implemented if demand eclipsed health systems' ability to provide critical care. While SRA policies follow general ethical frameworks, understanding priorities of those affected by policies and/or tasked with implementing them is critical.

Objective: To evaluate whether community members and health care profesionals (HCP) agree with SRA protocols at the University of California (UC).

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  • Advances in mobile tech and AI have led to a rise in dermatology apps for consumers, but evidence supporting their effectiveness is limited.
  • A study analyzed 909 AI dermatology apps, narrowing it down to 41 after reviewing their purpose, evidence, regulatory status, and data privacy.
  • Findings showed that none of the apps were FDA-approved, and most lacked clinician input and transparency, raising concerns about their reliability and safety for consumers.
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  • Sleep-disordered breathing (SDB) is prevalent in Veterans, with a study analyzing the rates of central sleep apnea (CSA), obstructive sleep apnea (OSA), and a combination of both (COSA).
  • From 90 screened patients, 71% had COSA, 20% had CSA only, and 9% had OSA only, with only 24.4% of those with CSA or COSA responding well to PAP therapy.
  • Although the initial response to PAP therapy was low, both responsive and nonresponsive groups showed significant improvements in apnea rates after 60 days of treatment.
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Study Objective: Treatment of sleep-disordered breathing (SDB) with positive airway pressure (PAP) therapy has unique clinical challenges in individuals living with spinal cord injuries and diseases (spinal cord injury [SCI]/D). Interventions focused on increasing PAP use have not been studied in this population. We aimed to evaluate the benefits of a program to increase PAP use among Veterans with SCI/D and SDB.

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Introduction: There are gaps in knowledge and experience of antiretroviral pre-exposure prophylaxis (PrEP) delivery in adolescents.

Methods: This pilot study enrolled Thai adolescents 14-20 year-old without HIV who reported risk behaviour. All participants were offered daily tenofovir/emtricitabine (TDF-FTC) and followed for 24 weeks.

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A major limitation to developing chimeric antigen receptor (CAR)-T cell therapies for solid tumors is identifying surface proteins highly expressed in tumors but not in normal tissues. Here, we identify Tyrosinase Related Protein 1 (TYRP1) as a CAR-T cell therapy target to treat patients with cutaneous and rare melanoma subtypes unresponsive to immune checkpoint blockade. TYRP1 is primarily located intracellularly in the melanosomes, with a small fraction being trafficked to the cell surface via vesicular transport.

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Protocol for neurogenin-2-mediated induction of human stem cell-derived neural progenitor cells.

STAR Protoc

March 2024

Department of Human Genetics, David Geffen School of Medicine at the University of California Los Angeles, Los Angeles, CA 90095, USA; Molecular Biology Institute, University of California Los Angeles, Los Angeles, CA 90095, USA. Electronic address:

Human pluripotent stem cell-derived neural progenitor cells (NPCs) are an essential tool for the study of brain development and developmental disorders such as autism. Here, we present a protocol to generate NPCs rapidly and reproducibly from human stem cells using dual-SMAD inhibition coupled with a brief pulse of mouse neurogenin-2 (Ngn2) overexpression. We detail the 48-h induction scheme deployed to produce these cells-termed stem cell-derived Ngn2-accelerated progenitor cells-followed by steps for expansion, purification, banking, and quality assessment.

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