2,402 results match your criteria: "Irvine School of Medicine[Affiliation]"

Background: Methicillin-resistant Staphylococcus aureus (MRSA) bacteremia is associated with high rates of treatment failure, even when antibiotics showing in vitro susceptibility are used. Early optimization of therapy is crucial to reduce morbidity and mortality. Building on our previous research on carbapenem therapy for methicillin-susceptible S.

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Background: Leber congenital amaurosis (LCA) is a congenital onset severe form of inherited retinal dystrophy (IRD) and a common cause of pediatric blindness. Disease-causing variants in at least 14 genes are reported to predispose LCA phenotype. LCA is inherited as an autosomal recessive disease.

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Neuronal ceroid lipofuscinosis type 2 (CLN2) is a rapidly progressive neurodegenerative disorder leading to premature mortality. Ambulatory CLN2 patients typically receive standard of care treatment through biweekly intracerebroventricular (ICV) enzyme replacement therapy (ERT) involving recombinant human tripeptidyl peptidase 1, known as cerliponase alfa (Brineura, Biomarin Pharmaceuticals). This study longitudinally assessed the impact of ICV cerliponase alfa ERT on gait, and postural control across a two-year span in two siblings diagnosed with atypical CLN2 disease.

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Functional analysis of non-coding variants associated with congenital disorders remains challenging due to the lack of efficient in vivo models. Here we introduce dual-enSERT, a robust Cas9-based two-color fluorescent reporter system which enables rapid, quantitative comparison of enhancer allele activities in live mice in less than two weeks. We use this technology to examine and measure the gain- and loss-of-function effects of enhancer variants previously linked to limb polydactyly, autism spectrum disorder, and craniofacial malformation.

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Mutations in KRAS G12C are among the more common oncogenic driver mutations in non-small cell lung cancer (NSCLC). In December 2022, the US Food and Drug Administration (FDA) granted accelerated approval to adagrasib, a small molecule covalent inhibitor of KRAS G12C, for the treatment of patients with locally advanced or metastatic KRAS G12C mutant NSCLC who received at least one prior systemic therapy based on promising results from phase 1 and 2 trials wherein adagrasib demonstrated a median PFS of 6.5 months.

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Introduction: The utility of pancreaticoduodenectomy (PD) for high-grade traumatic injuries remains unclear and data surrounding its use are limited. We hypothesized that PD does not result in improved outcomes when compared with non-PD surgical management of grade IV-V pancreaticoduodenal injuries.

Methods: This is a retrospective, multicenter analysis from 35 level 1 trauma centers from January 2010 to December 2020.

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Objective: The purpose of this systematic review is to provide a detailed summary of the long-acting injectable antipsychotic medications approved by the Food and Drug Administration (FDA) between 2008 to October 2024. We aim to provide an overview of the mechanism of action, indications for both labeled and off-label uses, evidence for efficacy, dosing, and the adverse effects of each drug.

Methods: Studies published from 2008 to October 1, 2024, were identified from the PubMed database, using the keywords: 'long-acting injectables' OR 'LAI*'AND 'psychopharm*" OR 'schizophrenia' The authors conducted a focused analysis independently and reached a consensus on the recently approved long-acting injectable antipsychotic medications to be included in this systematic review.

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Dietary methionine supplementation promotes mice hematopoiesis after irradiation.

Mil Med Res

December 2024

Department of Blood Transfusion, Laboratory Medicine Center, the Second Affiliated Hospital, Army Medical University, Chongqing, 400037, China.

Background: With the increasing risk of nuclear exposure, more attention has been paid to the prevention and treatment of acute radiation syndrome (ARS). Although amino acids are key nutrients involved in hematopoietic regulation, the impacts of amino acids on bone marrow hematopoiesis following irradiation and the associated mechanisms have not been fully elucidated. Hence, it is of paramount importance to study the changes in amino acid metabolism after irradiation and their effects on hematopoiesis as well as the related mechanisms.

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Objectives: Targeted therapies have been shown to improve outcomes in metastatic non-small cell lung cancer (mNSCLC) with driver mutations. We evaluated the real-world prevalence of human epidermal growth factor receptor 2 (HER2; ERBB2) tumor gene mutations among patients with mNSCLC and described historical treatments and outcomes in patients with HER2-mutant mNSCLC, during a period when there was no approved targeted therapy for HER2-mutant mNSCLC.

Materials And Methods: This retrospective observational study used a US nationwide de-identified NSCLC clinico-genomic database.

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Introduction: Individuals living with sickle cell disease (SCD) commonly report impaired health-related quality of life (HRQoL). However, impacts of SCD on HRQoL and the unmet needs of SCD treatment/management are under-researched. This study characterized the impact of SCD on HRQoL and identified the unmet needs of individuals with SCD.

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Climate Change and Health: Occupational and Environmental Medicine at the Frontlines.

J Grad Med Educ

December 2024

is Associate Professor of Medicine, Harvard Medical School, Associate Professor of Environmental Health, Harvard T.H. Chan School of Public Health, Boston, Massachusetts, USA, and Director of Faculty Affairs, Department of Medicine, and Occupational and Environmental Health Physician, Cambridge Health Alliance, Cambridge, Massachusetts, USA.

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Introduction: In response to the COVID-19 pandemic, we rapidly implemented a plasma coordination center, within two months, to support transfusion for two outpatient randomized controlled trials. The center design was based on an investigational drug services model and a Food and Drug Administration-compliant database to manage blood product inventory and trial safety.

Methods: A core investigational team adapted a cloud-based platform to randomize patient assignments and track inventory distribution of control plasma and high-titer COVID-19 convalescent plasma of different blood groups from 29 donor collection centers directly to blood banks serving 26 transfusion sites.

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Adagrasib in the Treatment of KRAS p.G12C Positive Advanced NSCLC: Design, Development and Place in Therapy.

Drug Des Devel Ther

December 2024

Department of Medicine, University of California Irvine School of Medicine, Chao Family Comprehensive Cancer Center, Orange, CA, USA.

One of the most common mutations seen in lung cancers are mutations in Kristen Rat Sarcoma Viral Oncogene Homolog (KRAS), observed in 25-30% of patients with NSCLC. Mutations in KRAS result in oncogenesis via persistent activation of the MAPK/ERK pathways. Although once thought to be "undruggable", KRAS p.

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Article Synopsis
  • - Drug resistance in EGFR-mutant non-small cell lung cancer (NSCLC) is complicated by mechanisms like pathway reactivation and fusion of receptor tyrosine kinases (RTKs), leading to challenges in treatment with tyrosine kinase inhibitors (TKIs).
  • - A study involving multiple institutions analyzed 27 patients with RTK fusions identified through genetic testing, focusing on their response to dual TKI therapy, with results showing a 24% objective response rate and an 80% disease control rate overall.
  • - The majority of patients had ALK or RET fusions, and those who received dual TKI treatment had a slightly lower response rate (21.4%) but no new side effects were reported, suggesting this approach
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Implementing novel diagnostic and therapeutic strategies to improve population health outcomes and equity in kidney disease, dialysis therapies, and transplantation.

Curr Opin Nephrol Hypertens

January 2025

American Heart Association Comprehensive Hypertension Center at the University of California Irvine Medical Center, Division of Nephrology, Hypertension and Kidney Transplantation, Department of Medicine, University of California Irvine School of Medicine, Orange.

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Background: Respiratory syncytial virus (RSV) is the leading cause of acute lower respiratory illness among young children. Human immunodeficiency virus (HIV)-exposed, uninfected (HEU) children experience a higher burden of RSV disease and have immune abnormalities that may influence their responses to live-attenuated RSV vaccines.

Methods: In a pooled analysis of clinical trials of 7 live-attenuated, intranasal RSV vaccines conducted by the IMPAACT Network among children 6 to <25 months of age with serum RSV-neutralizing titers of <1:40, the infectivity and immunogenicity of these vaccines were compared among HEU and HIV-unexposed, uninfected (HUU) children.

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Background: Overdose deaths due to opioids are a major concern in the United States. Physicians often report inadequate training in chronic pain and substance use disorder management. Here, we evaluate whether a specialized program, the Train New Trainers Primary Care Psychiatry (TNT PCP) Fellowship, affected opioid prescription practices among primary care physicians.

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Article Synopsis
  • Elevated intracranial pressure during vaginal delivery may lead to neonatal retinal hemorrhage by causing stress and deformation in the eye's structures.
  • A computational model showed how maternal contractions can displace the eye backward, inducing strain in the retina and stress on retinal vessels.
  • The study suggests that the resulting eye deformation, rather than blockage of blood vessels, is a more likely cause for this type of retinal damage in newborns.
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Objectives: Metabolic dysfunction-associated steatotic liver disease (MASLD) is the most common pediatric liver disease and can progress to liver fibrosis. Latino adolescents have increased MASLD and fibrosis risk. While fibrosis is diagnosed by biopsy or imaging, more accessible, noninvasive, and economical screening methods are needed.

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Article Synopsis
  • This study focused on the risk of Alzheimer's disease in adults with Down syndrome, using amyloid and tau PET imaging to track disease progression.
  • It involved a longitudinal analysis of 167 participants, assessing cognitive functioning and biomarkers over two visits between 2017 and 2022.
  • The research aimed to determine the timeline for symptomatic Alzheimer's based on "amyloid age" and its relation to cognitive decline and tau accumulation.
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The discovery of gene fusions involving Neuregulin-1 () within solid tumors has important therapeutic implications, as they are being actively explored as targets for emerging ERBB/ERBB2/ERBB3-directed anti-cancer agents. fusions are very uncommon across all tumor types and are infrequently documented in the medical literature. We report a female patient presenting with widespread peritoneal carcinomatosis diagnosed as high grade serous fallopian tube carcinoma, which harbored a previously undescribed :: fusion.

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Combined impact of prediabetes and hepatic steatosis on cardiometabolic outcomes in young adults.

Cardiovasc Diabetol

November 2024

Department of Internal Medicine, Chonnam National University Hwasun Hospital, Chonnam National University Medical School, 322, Seoyang-ro, Hwasun-eup, Hwasun-gun, Hwasun, 58128, Jeollanam-do, Republic of Korea.

Objectives: This study aimed to investigate the impact of hepatic steatosis on cardiometabolic outcomes in young adults with prediabetes.

Methods: A nationwide cohort study was conducted with 896,585 young adults under 40 years old without diabetes or previous history of cardiovascular disease. Hepatic steatosis was identified using a fatty liver index of ≥ 60.

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Dimerization of the deaminase domain and locking interactions with Cas9 boost base editing efficiency in ABE8e.

Nucleic Acids Res

December 2024

Department of Bioengineering, University of California Riverside, 900 University Avenue, 92512 Riverside, CA, USA.

CRISPR-based DNA adenine base editors (ABEs) hold remarkable promises to address human genetic diseases caused by point mutations. ABEs were developed by combining CRISPR-Cas9 with a transfer RNA (tRNA) adenosine deaminase enzyme and through directed evolution, conferring the ability to deaminate DNA. However, the molecular mechanisms driving the efficient DNA deamination in the evolved ABEs remain unresolved.

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Correction Rates and Clinical Outcomes in Hospitalized Adults With Severe Hyponatremia: A Systematic Review and Meta-Analysis.

JAMA Intern Med

January 2025

Argentine Cochrane Center, Centro de Investigación de Epidemiología y Salud Pública (CIESP)-Instituto de Efectividad Clínica y Sanitaria (IECS-CONICET), Buenos Aires, Argentina.

Importance: Hyponatremia treatment guidelines recommend limiting the correction of severe hyponatremia during the first 24 hours to prevent osmotic demyelination syndrome (ODS). Recent evidence suggests that slower rates of correction are associated with increased mortality.

Objective: To evaluate the association of sodium correction rates with mortality among hospitalized adults with severe hyponatremia.

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