Publications by authors named "Rachel Nelson"

Article Synopsis
  • * Researchers analyzed fecal samples from 18 anemic and 20 control infants at various postnatal ages, revealing that severe anemia correlates with increased virulence factors and significant alterations in gut metabolites.
  • * Findings suggest that severe anemia leads to a pro-inflammatory gut microbiome with more harmful bacterial activities, highlighting the need for further research on how these gut changes affect the health outcomes of preterm infants.
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Objectives: Many nonhuman primate diets are dominated by plant foods, yet plant tissues are often poor sources of sodium-a necessary mineral for metabolism and health. Among primates, chimpanzees (Pan troglodytes), which are ripe fruit specialists, consume diverse animal, and plant resources. Insects have been proposed as a source of dietary sodium for chimpanzees, yet published data on sodium values for specific foods are limited.

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Iliopsoas hematomas (IPH) are defined as a spontaneous or traumatic retroperitoneal collection of blood involving the iliopsoas muscle. In some cases, intramuscular hematomas can progress to abscesses and put the patient at risk for further complications. Our objectives are: to describe the etiology of intramuscular hematoma and psoas abscess, to describe the clinical signs and treatment of intramuscular hematoma and psoas abscess, and to analyze the association between uncontrolled diabetes mellitus and psoas abscess progression, which we achieve through retrospective case analysis and associated literature review on symptom constellation.

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Pyostomatitis vegetans (PSV) is a rare disorder strongly associated with inflammatory bowel disease (IBD), most commonly ulcerative colitis, but has infrequently been found in patients with Crohn disease (CD). We present the case of a 7-year-old girl with PSV and extraintestinal findings suggestive of CD-chelitis granulomatosa, perianal and vulvar edema with biopsies revealing noncaseating granulomas, and anal skin tags-and an elevated calprotectin noted during a cutaneous flare. She did not have clinical or endoscopically identified underlying gastrointestinal involvement for 4 years after symptom onset.

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Background: Therapeutic hypothermia in brain-dead organ donors has been shown to reduce delayed graft function in kidney recipients after transplantation. Data are needed on the effect of hypothermia as compared with machine perfusion on outcomes after kidney transplantation.

Methods: At six organ-procurement facilities in the United States, we randomly assigned brain-dead kidney donors to undergo therapeutic hypothermia (hypothermia group), ex situ kidney hypothermic machine perfusion (machine-perfusion group), or both (combination-therapy group).

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To identify potential gaps in attitudes, knowledge, and practices towards LGBTQ2S + patients with a cancer diagnosis, a survey of clinical providers (CP) and allied health staff (AHS) was conducted to identify areas of improvement and guide development for future education and training. A previously published, validated survey was adapted at the direction of a LGBTQ2S + Patient and Family Advisory Council, and modified to include AHS. The survey was disseminated to all faculty and staff, and was adapted to the participants' self-identified level of patient interaction/care responsibilities.

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Background: Prior research has demonstrated the widespread presence of racial disparities in emergency department (ED) care and analgesia. We hypothesized that racial disparities continue to exist in ED analgesic prescribing patterns, time to analgesia, and time to provider in the treatment of headache.

Methods: We performed a retrospective cohort study of patients presenting to a large tertiary academic ED with chief complaint of headache.

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Introduction: Giant cell arteritis (GCA) is a serious condition that carries with it a high rate of morbidity.

Objective: This review highlights the pearls and pitfalls of GCA in adult patients, including presentation, diagnosis, and management in the emergency department (ED) based on current evidence.

Discussion: GCA is an immune-mediated vasculitis of medium-sized vessels that primarily affects those over the age of 50 years.

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Maintaining water balance is essential for organismal health, and lactating females must balance individual needs with milk production and offspring hydration. Primate milk is dilute and presumed to be the primary source for infant hydration for a considerable time period. Few studies have investigated the hydration burden that lactation may place on female primates.

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Dissemination and implementation (D&I) researchers serve critical scientific, practical, and personal roles in translating science to public health benefit. However, they face multifaceted barriers that may erode their capacity to plan, lead, and evaluate implementation. Individualized coaching focused on human flourishing is an unexplored approach to fully actualize D&I researchers' capacity to bridge the research-practice gap.

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Importance: Ten years have passed since the Institute of Medicine (IOM) released its recommendations for gestational weight gain (GWG), based on a woman's prepregnancy body mass index. Despite this, the majority of women do not gain the appropriate gestational weight; most women gain too much weight, and a small but substantial number gain too little.

Objective: We review the literature concerning GWG, the opinions and practices of clinicians in managing their patients' weight, and how these practices are perceived by patients.

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Article Synopsis
  • * A study of 1181 SARS-CoV-2 samples shows that 95.1% exhibit noticeable within-host mutations, with unique patterns hinting at RNA damage or editing rather than typical replication errors.
  • * Despite most infections stemming from a single viral lineage, the presence of co-infections and complex mutation patterns can make it challenging to accurately reconstruct transmission histories using these within-host variants.
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Introduction: People with Down syndrome (DS) are particularly susceptible to Alzheimer's disease (AD) due to the triplication of the amyloid precursor protein () gene. In this cross-sectional study, we hypothesized that choroidal thinning reported in sporadic AD (sAD) is mirrored in adults with DS.

Methods: The posterior pole of the eye for 24 adults with DS and 16 age-matched controls (Ctrl) were imaged with optical coherence tomography.

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Article Synopsis
  • Spasticity and balance issues are common after traumatic brain injury (TBI), but little is known about how neurotransmitter levels in motor-related brain regions are affected after repetitive blast TBI (bTBI).
  • This study induced mild, repetitive bTBI in male rats and measured neurotransmitter levels (norepinephrine, dopamine, serotonin) in various motor system regions to see if these levels correlate with observed motor deficits.
  • Findings showed significant changes in monoamine levels, with increased norepinephrine in the locus coeruleus and decreased levels in the vestibular nuclei, suggesting that these neurotransmitter alterations may contribute to spasticity and balance problems after mild bTBI.
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Background: This study aimed to characterize bodily injury patterns associated with helmet usage by comparing trauma sustained by helmeted and helmetless cyclists admitted to a large US health-care system.

Materials And Methods: A prospective trauma registry associated with a large regional United States health-care network was queried for bicycle injuries resulting in hospital admission over a 5-year period. Data pertaining to helmet usage, demographics, injury description (s), Abbreviated Injury Scale score, Injury Severity Score, and hospital length of stay were collected from 140 patients treated for bicycle-related injuries.

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Aims: We report a novel pilot project that allows access to healthcare for children and staff at school via a mobile clinic or telemedicine portal connected to the mobile clinic. The objectives of this pilot project were (a) to perform physicals for children not attached to a primary care physician; (b) to provide medical consultations and treatment for acute illnesses of students and staff, and (c) to lower absenteeism rates among students and staff.

Methods: In 2013, Ronald McDonald House Charities, a non-profit organization, partnered with Children's Hospital of Erlanger to provide a mobile clinic trademarked Ronald McDonald Care Mobile utilising a large, box-style truck equipped with examination rooms and a telemedicine portal.

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Cervical spinal cord injury (CSCI) can induce lifelong disabilities, including spasticity and gait impairments. The objective of this pre-clinical study was to evaluate the therapeutic effects of simultaneous and combined early locomotor treadmill training (Tm) and injury site magnetic stimulation (TMSsc) on spasticity and gait impairments in a rat model of C moderate contusion SCI. The Tm training was initiated at post-injury (PI) day 8, whereas TMS treatment was added to Tm 14 days PI, and then the combined therapy (TMSTm) was continued for six weeks.

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By uncovering complex dynamics in the expression or localization of transcriptional regulators in single cells that were otherwise hidden at the population level, live cell imaging has transformed our understanding of how cells sense and orchestrate appropriate responses to changes in their internal state or extracellular environment. This has proved particularly true for the nuclear factor-kappaB (NF-κB) family of transcription factors, key regulators of the inflammatory response and innate immune function, which are capable of encoding information about the mode and intensity of stimuli in the dynamics of NF-κB nuclear accumulation and loss. While live cell imaging continues to serve as a useful tool in ongoing efforts to characterize the feedbacks that shape these dynamics and to connect dynamics to downstream gene expression, it is also proving invaluable for recent studies that seek to determine how intracellular pathogens subvert NF-κB signaling to survive and replicate within host cells by providing quantitative information about the pathogen and changes in NF-κB activity during different stages of an infection.

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Problem: Chorioamnionitis and infection-associated inflammation are major causes of preterm birth. Magnesium sulfate (MgSO ) is widely used in obstetrics as a tocolytic; however, its mechanism of action is unclear. This study sought to investigate how MgSO modulates infection-associated inflammation in fetal membranes (FMs), and whether the response was time dependent.

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Our recent findings have demonstrated that rodent models of closed head traumatic brain injury exhibit comprehensive evidence of progressive and enduring orofacial allodynias, a hypersensitive pain response induced by non-painful stimulation. These allodynias, tested using thermal hyperalgesia, correlated with changes in several known pain signaling receptors and molecules along the trigeminal pain pathway, especially in the trigeminal nucleus caudalis. This study focused to extend our previous work to investigate the changes in monoamine neurotransmitter immunoreactivity changes in spinal trigeminal nucleus oralis, pars interpolaris and nucleus tractus solitaries following mild to moderate closed head traumatic brain injury, which are related to tactile allodynia, touch-pressure sensitivity, and visceral pain.

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Technology utilizing human induced pluripotent stem cells (iPS cells) has enormous potential to provide improved cellular models of human disease. However, variable genetic and phenotypic characterization of many existing iPS cell lines limits their potential use for research and therapy. Here we describe the systematic generation, genotyping and phenotyping of 711 iPS cell lines derived from 301 healthy individuals by the Human Induced Pluripotent Stem Cells Initiative.

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