Publications by authors named "Nicole Mitchell"

Background: Management of pediatric solid organ injuries continues to evolve, decreasing the need for serial hemoglobin measurements, repeat imaging, and operative intervention. Transcutaneous continuous hemoglobin monitoring (TCHM) has been shown to effectively monitor hemoglobin levels in children with solid organ trauma.

Methods: A 6-year, single-center, retrospective chart review was conducted of pediatric solid organ injury patients aged 30 days to <18 years admitted to a quaternary children's hospital following implementation of a highly protocolized TCHM system.

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Background: There is limited evidence on the optimal surveillance approach in patients with low- and very low-risk gastrointestinal stromal tumors, resulting in inconsistent and arbitrary approaches to surveillance in this population. In this study, we reviewed our institutional approach to surveillance in patients with low- and very low-risk gastrointestinal stromal tumors and the costs associated with detecting recurrence.

Methods: We retrospectively reviewed consecutive adult patients treated for low- and very low-risk gastrointestinal stromal tumors at our institution from 2010 to 2019.

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Cedars-Sinai is a sixth continuous Magnet organization in Southern California that embodies inclusive leadership in support of diversity, equity, inclusion, and justice (DEIJ) principles. The organization adheres to a strategic model prioritizing staff sense of belonging, empowerment, engagement, curiosity, and creativity. Employing inclusive leadership, we have implemented strong programs of professional development and continuous learning, innovation, and research.

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Objective: EDs are necessary for urgent health concerns; however, many physical ED visits could be better treated in alternate settings. The present study aimed to describe the feasibility, acceptability and effectiveness of a Virtual ED to reduce unnecessary physical ED presentations at a large tertiary health service in Australia.

Methods: This observational study using the RE-AIM framework (Reach, Efficacy, Adoption, Implementation and Maintenance) evaluated the feasibility of a Virtual ED using routinely collected health service data and process-evaluation to assess intervention fidelity and adherence between April 2020 and 31 March 2022.

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Introduction: Access to patients' electronic medical records (EMRs) on personal communication devices (PCDs) is beneficial but can negatively impact surgeons. In a recent op-ed, Cohen et al. explored this technology "empowerment/enslavement paradox" and its potential effect on surgeon burnout.

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Since its inception, Cedars-Sinai Health System has led with compassion to embody the principles of health equity and the fight against prejudice and racism. Founded in 1902 as Los Angeles' first Jewish hospital, Cedars-Sinai through the years has continued to serve the most vulnerable, disadvantaged, and marginalized communities. In this article, we share a part of our current journey toward advancing health equity during a challenging year of pandemic and crisis (2020-2021).

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Background: Comminution reduces the sampling error arising from distributional heterogeneity of the target contaminant/target analyte in the material, facilitating the selection of a more representative test portion. A laboratory sampling method incorporating comminution prior to selection of the test portion (Sampling Method B) was compared to current sampling methods that used no comminution step (Sampling Method A).

Objective: This required the development of an efficient process for comminution of food samples prior to removal of the test portion for the detection and isolation of Listeria monocytogenes and the enumeration of Staphylococcus species and Escherichia coli.

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Background: Docking large ligands, and especially peptides, to protein receptors is still considered a challenge in computational structural biology. Besides the issue of accurately scoring the binding modes of a protein-ligand complex produced by a molecular docking tool, the conformational sampling of a large ligand is also often considered a challenge because of its underlying combinatorial complexity. In this study, we evaluate the impact of using parallelized and incremental paradigms on the accuracy and performance of conformational sampling when docking large ligands.

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Growth impairment is a major public health issue for children in Tanzania. The question remains as to whether dietary mycotoxins play a role in compromising children's growth. We examined children's exposures to dietary aflatoxin and fumonisin and potential impacts on growth in 114 children under 36 months of age in Haydom, Tanzania.

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Exposure to aflatoxin, a mycotoxin common in many foods, has been associated with child growth impairment in sub-Saharan Africa. To improve our understanding of growth impairment in relation to aflatoxin and other risk factors, we assessed biospecimens collected in Nepalese children at 15, 24, and 36 months of age for aflatoxin exposure. Children (N = 85) enrolled in the Bhaktapur, Nepal MAL-ED study encompassed the cohort analysed in this study.

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Ochratoxin A (OTA) is a mycotoxin (fungal toxin) found in multiple foodstuffs. Because OTA has been shown to cause kidney disease in multiple animal models, several governmental bodies around the world have set maximum allowable levels of OTA in different foods and beverages. In this study, we conducted the first exposure and risk assessment study of OTA for the United States' population.

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Dietary co-exposure to aflatoxin B1 (AFB1) and fumonisin B1 (FB1) and their interaction on hepatocellular carcinogenesis is of particular concern in toxicology and public health. In this study we evaluated the liver preneoplastic effects of single and sequential dietary exposure to AFB1 and FB1 in the F344 rat carcinogenesis model. Serum biochemical alterations, liver histopathological changes, and the formation of liver glutathione S transferase positive (GST-P+) foci were the major outcome parameters examined.

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Trichothecene mycotoxins commonly co-contaminate cereal products. They cause immunosuppression, anorexia, and emesis in multiple species. Dietary exposure to such toxins often occurs in mixtures.

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Mycotoxins, toxins produced by fungi that colonise food crops, can pose a heavy economic burden to the US corn industry. In terms of economic burden, aflatoxins are the most problematic mycotoxins in US agriculture. Estimates of their market impacts are important in determining the benefits of implementing mitigation strategies within the US corn industry, and the value of strategies to mitigate mycotoxin problems.

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Exposure to aflatoxin, a mycotoxin common in maize and groundnuts, has been associated with childhood stunting in sub-Saharan Africa. In an effort to further our understanding of growth impairment in relation to mycotoxins and other risk factors, biospecimens from a cohort of children enrolled in the Bhaktapur, Nepal MAL-ED study were assessed for aflatoxin exposure at 15, 24, and 36 months of age. Exposure was assessed through a well-established serum biomarker, the AFB-lysine adduct.

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Recently, an association between childhood growth stunting and aflatoxin (AF) exposure has been identified. In Ghana, homemade nutritional supplements often consist of AF-prone commodities. In this study, children were enrolled in a clinical intervention trial to determine the safety and efficacy of Uniform Particle Size NovaSil (UPSN), a refined calcium montmorillonite known to be safe in adults.

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Naturally occurring foodborne toxins are common in subsistence diets of low-income human populations worldwide. Often, these populations rely on one or two staple foods for the bulk of their calories, making them more susceptible to chronic intake of certain toxins. Exposure to common foodborne toxins is associated with diverse conditions such as cancer, immunotoxicity, growth impairment, and neurological deficits.

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We investigated the effects of consuming a high-carbohydrate meal (HC), high-fat meal (HF), or no meal (CON) following exercise on fat and carbohydrate oxidation (FAT-OX, CHO-OX) in women with differing levels of body fat. Healthy, physically active females were divided into a Lower Fat (<25% fat, n = 10) or Higher Fat (>25% fat, n = 9) group and tested on 4 occasions. During session 1, body composition and maximal oxygen consumption were determined.

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Aflatoxins are common contaminants of staple crops, such as corn and groundnuts, and a significant cause of concern for food safety and public health in developing countries. Aflatoxin B (AFB) has been implicated in the etiology of acute and chronic disease in humans and animals, including growth stunting, liver cancer and death. Cost effective and culturally acceptable intervention strategies for the reduction of dietary AFB exposure are of critical need in populations at high risk for aflatoxicosis.

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Aflatoxins (AFs) and fumonisins (FBs) can co-contaminate foodstuffs and have been associated with hepatocellular and esophageal carcinomas in humans at high risk for exposure. One strategy to reduce exposure (and toxicity) from contaminated foodstuffs is the dietary inclusion of a montmorillonite clay (UPSN) that binds AFs and FBs in the gastrointestinal tract. In this study, the binding capacity of UPSN was evaluated for AFB1, FB1 and a combination thereof in Fischer 344 rats.

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