61 results match your criteria: "Children's Hospital of Orange County (CHOC)[Affiliation]"

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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Perceived memory credibility: The role of details.

Proc Natl Acad Sci U S A

December 2024

Department of Pediatrics, School of Medicine, University of California, Irvine, CA 92697.

The sharing of personal memories is a unique aspect of the human experience. Humans communicate to provide information, to influence, or even to amuse. How do we distinguish between credible and noncredible narratives? Forensic science has identified race, age, and detail quantity as influential.

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Objectives: Emergency Medical Services (EMS) clinicians are in a unique position to screen for child maltreatment as they are often the first point of contact with the health care system and they may encounter children in their home environment. However, EMS training regarding the signs of child maltreatment is lacking. Although several child maltreatment screening tools have been developed for the primary care and Emergency Department (ED) settings, there appears to be no published literature describing or evaluating a prehospital screening aid.

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As frontline healthcare workers, pediatric oncology nurses are at high risk for burnout, compassion fatigue, and decreased compassion satisfaction. Research indicates that up to 60% of oncology staff experience some form of burnout. This can lead to difficulties in personal and professional relationships, decreased staff retention, and negative effects on patient safety.

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Article Synopsis
  • Most menstrual cycle studies have focused on small, lab-based samples of young women, limiting understanding of broader impacts across different ages and real-life conditions.
  • This study involved 116 healthy females, comprising young and midlife groups, using wearable tech to monitor finger temperature, heart rate, physical activity, and self-reported symptoms throughout the menstrual cycle.
  • Findings revealed that temperature fluctuated with the menstrual cycle phases, HR was lowest during menses for both groups, but sleep metrics remained stable regardless of cycle changes.
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The state of California (CA) added X-linked adrenoleukodystrophy (X-ALD) to newborn screening (NBS) in 2016 via the measurement of C26:0-lysophosphatidylcholine (C26:0-LPC) in a two-tier fashion, followed by sequencing of the gene. This has resulted in the identification of individuals with genetic conditions beyond X-ALD that can also result in elevated C26:0-LPC by NBS. We describe the biochemical, molecular, and clinical characteristics of nine patients from two metabolic centers in California who screened positive by NBS for elevated C26:0-LPC between 2016 and 2022 and were ultimately diagnosed with a genetic condition other than X-ALD.

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Background: Alzheimer's disease (AD) is the most common neurodegenerative disease. Studying the effects of drug treatments on multiple health outcomes related to AD could be beneficial in demonstrating which drugs reduce the disease burden and increase survival.

Methods: We conducted a comprehensive causal inference study implementing doubly robust estimators and using one of the largest high-quality medical databases, the Oracle Electronic Health Records (EHR) Real-World Data.

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East Meets West: Effect of Acupuncture on Lactation and Maternal Quality of Life.

Breastfeed Med

April 2024

University of California, Irvine, Department of Pediatrics, School of Medicine, Irvine, California, USA.

To evaluate the impact of acupuncture as part of a traditional Chinese medicine (TCM) treatment plan on lactation and maternal well-being in pump-dependent mothers of hospitalized neonates during the first 30 days after delivery. This single-center study was conducted in a level IV regional neonatal intensive care unit with access to integrative health services. Sixty-six mothers were prospectively enrolled in two nonparallel groups: (1) Standard lactation support and (2) standard lactation support augmented with acupuncture.

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Pediatric ping-pong skull fractures treated with vacuum-assisted elevation.

Childs Nerv Syst

June 2024

Division of Neurosurgery, Children's Hospital of Orange County (CHOC), CHOC Neuroscience Institute, Orange, CA, USA.

Article Synopsis
  • Vacuum-assisted elevation is a noninvasive treatment for "ping-pong" skull fractures in infants, offering an alternative to observation or surgical intervention.
  • A study at the Children's Hospital of Orange County found that this technique resulted in significant improvement in fracture reduction for most patients, with no major complications reported.
  • Factors like the mechanism of injury and patient age may influence treatment outcomes; however, the procedure is generally safe and performed quickly at the bedside.
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Background: Biomarkers for idiopathic inflammatory myopathies are difficult to identify and may involve expensive laboratory tests. We assess the potential for artificial intelligence (AI) to differentiate children with juvenile dermatomyositis (JDM) from healthy controls using nailfold capillaroscopy (NFC) images. We also assessed the potential of NFC images to reflect the range of disease activity with JDM.

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Background: Pediatric patients transferred by Emergency Medical Services (EMS) from urgent care (UC) and office-based physician practices to the emergency department (ED) following activation of the 9-1-1 EMS system are an under-studied population with scarce literature regarding outcomes for these children. The objectives of this study were to describe this population, explore EMS level-of-care transport decisions, and examine ED outcomes.

Methods: This was a retrospective review of patients zero to <15 years of age transported by EMS from UC and office-based physician practices to the ED of two pediatric receiving centers from January 2017 through December 2019.

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Alzheimer's disease is the most common type of dementia that currently affects over 6.5 million people in the U.S.

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Sublaminar Band Fixation Provides Excellent Anchors for MAGEC Rod Distraction Systems.

J Am Acad Orthop Surg Glob Res Rev

August 2023

From Orthopaedic Surgery, Children's Hospital of Orange County (CHOC Children's Health), Orange, CA (Dr. Rosenfeld, Dr. Weber, Dr. Thomas, and Dr. Barger); Orthopaedic Surgery, Riverside University Health system Medical Center, Moreno Valley, CA (Dr. Weber and Dr. Barger); and Orthopaedic Surgery, Kettering Health Dayton, Dayton, OH (Dr. Thomas).

MAGEC rods (NuVasive) provide distraction growth in early-onset scoliosis. Pedicle screw use with MAGEC rods can lead to anchor failure. Sublaminar bands offer superior fixation points for the MAGEC system while preserving pedicles and facets, avoiding spinal cord injury, and eliminating the need for fluoroscopy.

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In the bone marrow microenvironment (BMME), mesenchymal stem/stromal cells (MSCs) control the self-renewal of both healthy and cancerous hematopoietic stem/progenitor cells (HSPCs). We previously showed that leukemia-derived MSCs change neighbor MSCs into leukemia-permissive states and boost leukemia cell proliferation, survival, and chemotherapy resistance. But the mechanisms behind how the state changes are still not fully understood.

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By converting physical forces into electrical signals or triggering intracellular cascades, stretch-activated ion channels allow the cell to respond to osmotic and mechanical stress. Knowledge of the pathophysiological mechanisms underlying associations of stretch-activated ion channels with human disease is limited. Here, we describe 17 unrelated individuals with severe early-onset developmental and epileptic encephalopathy (DEE), intellectual disability, and severe motor and cortical visual impairment associated with progressive neurodegenerative brain changes carrying ten distinct heterozygous variants of TMEM63B, encoding for a highly conserved stretch-activated ion channel.

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The rate model of basal ganglia function predicts that muscle activity in dystonia is due to disinhibition of thalamus resulting from decreased inhibitory input from pallidum. We seek to test this hypothesis in children with dyskinetic cerebral palsy undergoing evaluation for deep brain stimulation (DBS) to analyze movement-related activity in different brain regions. The results revealed prominent beta-band frequency peaks in the globus pallidus interna (GPi), ventral oralis anterior/posterior (VoaVop) subnuclei of the thalamus, and subthalamic nucleus (STN) during movement but not at rest.

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Introduction: Neuroblastoma (NB) is one of the children's most common solid tumors, accounting for approximately 8% of pediatric malignancies and 15% of childhood cancer deaths. Somatic mutations in several genes, such as , have been associated with NB progression and can facilitate the discovery of novel therapeutic strategies. However, the differential expression of mutated and wild-type alleles on the transcriptome level is poorly studied.

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Long-term survival with anlotinib as a front-line treatment in an elderly NSCLC patient: A case report.

Front Oncol

April 2023

Neuro-Oncology and Stem Cell Research Laboratory, Center for Neuroscience Research, CHOC Children's Research Institute, Children's Hospital of Orange County (CHOC), Orange, CA, United States.

Background: Half of the population of non-small cell lung cancer (NSCLC) patients are older than 70 years and have limited therapeutic options due to poor tolerance and being excluded in most clinical trials. Anlotinib hydrochloride, a novel oral multi-target tyrosine kinase inhibitor, has been approved for the standard third-line treatment for NSCLC in China. Herein we report an elderly NSCLC patient without any driver gene mutations who was undergoing anlotinib as a front-line treatment and who achieved long-term survival.

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Marfan syndrome is a pleiotropic genetic connective tissue disorder most commonly involving the cardiovascular, skeletal, and ocular systems, which have abundant connective tissue. It is not known to affect the central nervous system, therefore developmental delays or cognitive involvement are not typically associated. We present a case of a 2-year-old Hispanic male who was diagnosed with autism spectrum disorder (ASD) because of poor social interaction, lack of eye contact, and speech delays.

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Qigong Exercise Balances Oxygen Supply and Acid-Base to Modulate Hypoxia: A Perspective Platform toward Preemptive Health & Medicine.

Med Sci (Basel)

February 2023

Neuro-Oncology and Stem Cell Research Laboratory (NSCL), CHOC Children's Research Institute (CCRI), Children's Hospital of Orange County (CHOC), 1201 W. La Veta Ave., Orange, CA 92868-3874, USA.

Qigong is a meditative movement with therapeutic effects and is commonly practiced in Eastern medicine. A growing body of evidence validates its health benefits, leading to mechanistic questions about how it works. We propose a novel mechanism by which the "acid" caused by hypoxia affects metabolism, and the way it is neutralized through Qigong practice involves the body's blood flow and vasculature modifications.

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The contribution of different brain regions to movement abnormalities in children with dystonia is unknown. Three awake subjects undergoing depth electrode implantation for assessments of potential deep brain recording targets performed a rhythmic figure-8 drawing task. Two subjects had dystonia, one was undergoing testing for treatment of Tourette Syndrome and had neither dystonia nor abnormal movements during testing.

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Healthcare-associated infections (HAIs) affect patient health. Patients with Paediatric Intensive Care Unit (PICU) acquired viral respiratory infections had longer use of respiratory support. We found it's uncommon in ICUs to have high risk HAIs.

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Dominantly acting KIF5B variants with pleiotropic cellular consequences cause variable clinical phenotypes.

Hum Mol Genet

January 2023

Genetics and Rare Diseases Research Division, Ospedale Pediatrico Bambino Gesù, IRCCS, 00146 Rome, Italy.

Kinesins are motor proteins involved in microtubule (MT)-mediated intracellular transport. They contribute to key cellular processes, including intracellular trafficking, organelle dynamics and cell division. Pathogenic variants in kinesin-encoding genes underlie several human diseases characterized by an extremely variable clinical phenotype, ranging from isolated neurodevelopmental/neurodegenerative disorders to syndromic phenotypes belonging to a family of conditions collectively termed as 'ciliopathies.

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Currently, most neuroblastoma patients are treated according to the Children's Oncology Group (COG) risk group assignment; however, neuroblastoma's heterogeneity renders only a few predictors for treatment response, resulting in excessive treatment. Here, we sought to couple COG risk classification with tumor intracellular microbiome, which is part of the molecular signature of a tumor. We determine that an intra-tumor microbial gene abundance score, namely M-score, separates the high COG-risk patients into two subpopulations (M and M) with higher accuracy in risk stratification than the current COG risk assessment, thus sparing a subset of high COG-risk patients from being subjected to traditional high-risk therapies.

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Adolescent COVID-19 Vaccine Decision-Making among Parents in Southern California.

Int J Environ Res Public Health

April 2022

Institute for Clinical and Translational Science, University of California, Irvine, CA 92697, USA.

Adolescent COVID-19 vaccination has stalled at 53% in the United States. Vaccinating adolescents remains critical to preventing the continued transmission of COVID-19, the emergence of variants, and rare but serious disease in children, and it is the best preventive measure available to return to in-person schooling. We investigated parent-adolescent COVID-19 vaccine decision-making.

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