819 results match your criteria: "University of Southern California Los Angeles[Affiliation]"
Obes Sci Pract
February 2024
Background: During the early months of the COVID-19 pandemic, decreases in physical activity (PA) and increases in sedentary behavior (SB) were reported among children in the United States (U.S.).
View Article and Find Full Text PDFJ Am Heart Assoc
February 2024
Department of Population and Public Health Sciences, Keck School of Medicine University of Southern California Los Angeles CA USA.
Laryngoscope Investig Otolaryngol
December 2023
Objectives: Determine factors associated with delayed endoscopic sinus surgery (ESS) in patients with chronic rhinosinusitis (CRS).
Methods: This is a retrospective cohort study conducted at a tertiary care academic center. Patients were included in the study if they were at least 18 years old and underwent surgery for CRS.
Laryngoscope Investig Otolaryngol
December 2023
Objective: To evaluate the quality of thyroidectomy-related posts on TikTok, the fastest-growing social media platform worldwide.
Methods: Videos posted from April 2020 to September 2022 were queried on TikTok using the search terms "thyroidsurgery," "thyroidectomy," and "thyroidremoval." Two reviewers recorded thematic, demographic, and performance data of these posts.
This review addresses the largely overlooked yet critical issue of "dead" metal in heterogeneous metal catalysts. "Dead" metal refers to the fraction of metal in a catalyst that remains inaccessible to reactants, significantly reducing the overall catalyst performance. As a representative example considered in detail here, this challenge is particularly relevant for carbon-supported metal catalysts, extensively employed in research and industrial settings.
View Article and Find Full Text PDFAlzheimers Dement (N Y)
December 2023
Department of Statistics Donald Bren School of Information and Computer Sciences University of California, Irvine Irvine California USA.
Introduction: Alzheimer's disease (AD) trials require enrollment with an informant.
Methods: We assessed relationships between informant replacement and Alzheimer's Disease Cooperative Study Activities of Daily Living (ADCS-ADL) scores across four AD trials. Using generalized estimating equations, we examined associations between replacement and change in ADCS-ADL between successive visits.
Many multicellular organisms, such as humans, plants, and invertebrates, depend on symbioses with microbes for metabolic cooperation and exchange. Reef-building corals, an ecologically important order of invertebrates, are particularly vulnerable to environmental stress in part because of their nutritive symbiosis with dinoflagellate algae, and yet also benefit from these and other microbial associations. While coral microbiomes remain difficult to study because of their complexity, the anemone is emerging as a simplified model.
View Article and Find Full Text PDFSalud Publica Mex
September 2023
School of Public and Population Health, University of Texas Medical Branch. Galveston, Texas, United States..
Objective: We examine the socioeconomic and health drivers of retirement decisions and compare these determinants between formal and informal sector workers in Mexico.
Materials And Methods: Using data from the Mexican Health and Aging Study 2012 and 2015, we estimate conditional probit models of retirement using sociodemographic, health, health care utilization, health insurance, private pensions, and social security systems covariates. The Institutional Review Board at the University of Southern California reviewed and approved the research (IRB # UP-15-00023).
J Allergy Clin Immunol Glob
February 2024
Keck School of Medicine, University of Southern California Los Angeles, Los Angeles, Calif.
Background: The assessment of erythema in patients with atopic dermatitis (AD) is based on clinical examination. The difficulty of perceiving erythema in Black patients with AD has led to underestimation of AD severity in these patients.
Objective: In this study, we analyzed the concentration of skin tape soluble protein of AD lesions against common AD clinical signs.
Background: Complex aortic plaque (CAP) is a potential embolic source in patients with cryptogenic stroke (CS). We review CAP imaging criteria for transesophageal echocardiogram (TEE), computed tomography angiography (CTA), and magnetic resonance imaging and calculate CAP prevalence in patients with acute CS.
Methods And Results: PubMed and EMBASE databases were searched up to December 2022 in accordance with the Preferred Reporting Items for Systematic Reviews and Meta-Analyses guideline.
OTO Open
November 2023
Objective: To characterize the users of the largest chronic rhinosinusitis (CRS) online support communities (OSCs), describe the perceived benefits of OSCs for their users, and understand how patient medical decision making is affected by membership in OSCs.
Study Design: Cross-sectional online survey.
Setting: Online.
Objective: To characterize the users of the head and neck cancer (HNC) online support group (OSG) and describe the perceived benefits of membership.
Study Design: Cross-sectional.
Setting: Online.
Obstet Gynecol Clin North Am
December 2023
University of Southern California/Los Angeles General Medical Center, 2051 Marengo Street, Los Angeles, CA 90033, USA; HRC Fertility, 55 S Lake Avenue, Suite 900, Pasadena, CA 91101, USA.
Although oocyte cryopreservation was initially used as a fertility preservation strategy for medical indications, it is now is increasingly used to circumvent age-related infertility. Outcomes following planned oocyte vitrification, also known as elective egg freezing, are limited. Current studies show higher success rates for individuals undergoing fertility preservation treatment under age 35.
View Article and Find Full Text PDFIntroduction: We examined whether a combined measure of neighborhood greenspace and neighborhood median income was associated with white matter hyperintensity (WMH) and ventricle size changes.
Methods: The sample included 1260 cognitively normal ≥ 65-year-olds with two magnetic resonance images (MRI; ≈ 5 years apart). WMH and ventricular size were graded from 0 (least) to 9 (most) abnormal (worsening = increase of ≥1 grade from initial to follow-up MRI scans).
JAMA
November 2023
Department of Surgery, University of Texas, Houston.
Importance: Among patients receiving mechanical ventilation, tidal volumes with each breath are often constant or similar. This may lead to ventilator-induced lung injury by altering or depleting surfactant. The role of sigh breaths in reducing ventilator-induced lung injury among trauma patients at risk of poor outcomes is unknown.
View Article and Find Full Text PDFChem Sci
October 2023
Department of Molecular Biosciences, University of Kansas 1200 Sunnyside Avenue Lawrence KS 66045 USA
is a serious human pathogen causing life-threatening Aspergillosis in immunocompromised patients. Secondary metabolites (SMs) play an important role in pathogenesis, but the products of many SM biosynthetic gene clusters (BGCs) remain unknown. In this study, we have developed a heterologous expression platform in , using a newly created genetic dereplication strain, to express a previously unknown BGC from and determine its products.
View Article and Find Full Text PDFPulmonary hypertension (PH) is a risk factor for mortality in patients with sarcoidosis. Severe PH in chronic lung disease has previously been defined as mean pulmonary arterial pressure (mPAP) ≥ 35 mmHg or mPAP 25 ≥ mmHg with cardiac index (CI) ≤ 2 L/min/m. However, there is no clear definition denoting severity of sarcoidosis-associated PH (SAPH).
View Article and Find Full Text PDFSevere acute respiratory syndrome coronavirus 2 (SARS-CoV-2) is the causal agent for coronavirus disease 2019 (COVID-19). Although vaccines have helped to prevent uncontrolled viral spreading, our understanding of the fundamental biology of SARS-CoV-2 infection remains insufficient, which hinders effective therapeutic development. Here, we found that Apolipoprotein E (ApoE), a lipid binding protein, is hijacked by SARS-CoV-2 for infection.
View Article and Find Full Text PDFAm J Cancer Res
September 2023
Faculty of Medicine, National Yang Ming Chiao Tung University Taipei 11221, Taiwan.
The association between REST reduction and the development of neuroendocrine prostate cancer (NEPC), a novel drug-resistant and lethal variant of castration-resistant prostate cancer (CRPC), is well established. To better understand the mechanisms underlying this process, we aimed to identify REST-repressed long noncoding RNAs (lncRNAs) that promote neuroendocrine differentiation (NED), thus facilitating targeted therapy-induced resistance. In this study, we used data from REST knockdown RNA sequencing combined with siRNA screening to determine that LINC01801 was upregulated and played a crucial role in NED in prostate cancer (PCa).
View Article and Find Full Text PDFRSC Chem Biol
October 2023
Department of Pharmacology and Pharmaceutical Sciences, Alfred E. Mann School of Pharmacy Los Angeles CA90033 USA +1-(323) 442-1417.
The search for novel antimicrobial agents to combat microbial pathogens is intensifying in response to rapid drug resistance development to current antibiotic therapeutics. The use of disulfide-rich head-to-tail cyclized polypeptides as molecular frameworks for designing a new type of peptide antibiotics is gaining increasing attention among the scientific community and the pharmaceutical industry. The use of macrocyclic peptides, further constrained by the presence of several disulfide bonds, makes these peptide frameworks remarkably more stable to thermal, biological, and chemical degradation showing better activities when compared to their linear analogs.
View Article and Find Full Text PDFSkin Health Dis
October 2023
Despite the high prevalence of psychiatric illness in hospitalised dermatology patients, characterisation of psychiatric comorbidities on an inpatient dermatology consultation service in the United States has yet to be performed. To fill this gap in knowledge, we investigated the prevalence of and factors associated with psychiatric illness on the inpatient dermatology consultation service at the University of Southern California. Of the 429 patients seen by the dermatology consultation service between June 2021 to July 2022, 147 (34%) had psychiatric illness (defined as having at least 1 psychiatric diagnosis).
View Article and Find Full Text PDFBackground: attention-deficit/hyperactivity disorder (ADHD) is associated with both polygenic liability and environmental exposures, both intrinsic to the family, such as family conflict, and extrinsic, such as air pollution. However, much less is known about the interplay between environmental and genetic risks relevant to ADHD-a better understanding of which could inform both mechanistic models and clinical prediction algorithms.
Methods: Two independent data sets, the population-based Adolescent Brain Cognitive Development Study (ABCD) ( = 11,876) and the case-control Oregon-ADHD-1000 ( = 1449), were used to examine additive (G + E) and interactive (GxE) effects of selected polygenic risk scores (PRS) and environmental factors in a cross-sectional design.