Publications by authors named "NELSON R"

Background: Chronic kidney disease (CKD) represents a significant global burden. Hypertension is a modifiable risk factor for rapid progression of CKD.

Methods: We extend the risk stratification by introducing the non-parametric determination of rhythmic components in 24-hour profiles of ambulatory blood pressure monitoring (ABPM) in the African American Study for Kidney Disease and Hypertension (AASK) cohort and the Chronic Renal Insufficiency Cohort (CRIC) using Cox proportional hazards models.

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  • The study investigates epigenetic markers as potential indicators for diabetes-related kidney issues, focusing on a cohort from the Hong Kong Diabetes Register composed of 1,271 type 2 diabetes patients.
  • Researchers conducted two separate epigenome-wide association studies that identified 40 significant CpG sites related to baseline kidney function and another 8 for the decline in kidney function.
  • The findings, validated in a separate group of Native Americans with type 2 diabetes, suggest that these methylation markers could help in assessing the risk of kidney disease in diabetes patients.
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Objective: Military veterans have high rates of noise-induced hearing loss (NIHL) which is associated with more significant spiral ganglion neuronal loss. This study explores the relationship between NIHL and cochlear implant (CI) outcomes in veterans.

Study Design: Retrospective case series of veterans who underwent CI between 2019 and 2021.

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Marine herbivorous fish that feed primarily on macroalgae, such as those from the genus are essential for maintaining coral health and abundance on tropical reefs. Here, deep metagenomic sequencing and assembly of gut compartment-specific samples from three sympatric, macroalgivorous Hawaiian kyphosid species have been used to connect host gut microbial taxa with predicted protein functional capacities likely to contribute to efficient macroalgal digestion. Bacterial community compositions, algal dietary sources, and predicted enzyme functionalities were analyzed in parallel for 16 metagenomes spanning the mid- and hindgut digestive regions of wild-caught fishes.

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In late May 2021, the M/V container ship caught fire while anchored 18 km off the coast of Colombo, Sri Lanka and spilled upward of 70 billion pieces of plastic or "nurdles" (∼1680 tons), littering the country's coastline. Exposure to combustion, heat, chemicals, and petroleum products led to an apparent continuum of changes from no obvious effects to pieces consistent with previous reports of melted and burned plastic (pyroplastic) found on beaches. At the middle of this continuum, nurdles were discolored but appeared to retain their prefire morphology, resembling nurdles that had been weathered in the environment.

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The number of approved or investigational late phase viral vector gene therapies (GTx) has been rapidly growing. The adeno-associated virus vector (AAV) technology continues to be the most used GTx platform of choice. The presence of pre-existing anti-AAV immunity has been firmly established and is broadly viewed as a potential deterrent for successful AAV transduction with a possibility of negative impact on clinical efficacy and a connection to adverse events.

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Background: The effectiveness and sustainability of masking policies as a pandemic control measure remain uncertain. Our aim was to evaluate different masking policy types on severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) incidence and to identify factors and conditions impacting effectiveness.

Methods: Nationwide, retrospective cohort study of US counties from 4/4/2020-28/6/2021.

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Objective: Stakeholders met to address persistent challenges facing the development of therapeutics for polyarticular juvenile idiopathic arthritis (pJIA), which result in fewer approved therapies for children with pJIA than adults with rheumatoid arthritis (RA) and long lag times from adult RA approval to pediatric labeling. Ensuring that new medications are authorized in a timely manner to meet the needs of JIA patients worldwide is critically important to multiple stakeholders.

Methods: The Food and Drug Administration in collaboration with the University of Maryland Center for Regulatory Science and Innovation held a public workshop entitled "Accelerating Drug Development for pJIA" on October 2, 2019, to address challenges surrounding access to new medications for children and adolescents with pJIA.

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Exercise-based cardiac rehabilitation (CR) is effective for improving both primary (i.e., mortality and hospitalizations) and secondary (i.

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Background: Homelessness is associated with poor health outcomes, including lack of access to care. Homelessness experienced in rural areas is understudied but likely associated with difficulty accessing needed services. Prior studies have assessed the extent to which Veterans experiencing homelessness in rural areas "migrate" to urban areas, but have not focused on changes in services utilization following migration.

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Physiology and behavior are synchronized to the external environment by endogenous circadian rhythms that are set to precisely 24 h by exposure to bright light early in the day. Exposure to artificial light outside of the typical solar day, such as during the night, may impair aspects of physiology and behavior in human and non-human animals. Both the intensity and the wavelength of light are important in mediating these effects.

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Introduction: Hemoglobin A1c (A1c) treatment goals in older adults should be individualized to balance risks and benefits. It is unclear if A1c stability over time within unique target ranges also affects adverse outcomes.

Research Design And Methods: We conducted a retrospective observational cohort study from 2004 to 2016 of veterans with diabetes and at least four A1c tests during a 3-year baseline.

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To develop a cognitive dysfunction (CD) focused questionnaire to evaluate caregiver burden in glioblastoma. The survey was developed from stakeholder consultations and a pilot study, and disseminated at eight US academic cancer centers. Caregivers self-reported caring for an adult with glioblastoma and CD.

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  • Some patients with subglottic stenosis (SGS) may need surgery for airway reconstruction; a new technique called cricoid-sparing high tracheal resection is introduced as an alternative to traditional methods that remove anterior cricoid cartilage.
  • A study at a single tertiary care center reviewed the outcomes of 14 female patients who underwent this novel surgery from 2016 to 2021.
  • Results showed that after an average follow-up of 12 months, 86% of patients maintained their airways without needing tracheostomy, and the procedure minimized the risk of voice dysfunction, which is particularly important for female patients.
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African American (AA) and Latino populations are impacted disproportionately by cancer incidence and mortality compared to the general US population. Contributing to these rates are multiple inheritable cancers that impact both men and women. Some of these diseases may be detected through genetic counseling and germline DNA testing; however, AA and Latinos are unaware and have limited knowledge and thus significantly underutilize these services and technologies.

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Background: Glucarpidase is indicated for treating delayed methotrexate (MTX) elimination due to impaired renal function. Although glucarpidase is capable of rapidly eliminating MTX independent of renal clearance, its cost can be perceived as a barrier to use. However, no published economic analyses have evaluated glucarpidase relative to comparable treatments.

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  • Research shows that LGBTQ+ youth experience worse mental health compared to cisgender heterosexual peers, with school environments being a significant factor impacting their well-being.
  • A UK study aimed to understand effective school-based interventions to improve mental health for LGBTQ+ young people by involving various stakeholders, including students and staff.
  • The developed program theory highlights three key pathways for success: promoting LGBTQ+ visibility, offering support and coping strategies, and addressing school culture through training and policies to create a safe and inclusive environment.
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Pain behavior and the systems that mediate opioid analgesia and opioid reward processing display circadian rhythms. Moreover, the pain system and opioid processing systems, including the mesolimbic reward circuitry, reciprocally interact with the circadian system. Recent work has demonstrated the disruptive relationship among these three systems.

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Pediatric patients should have access to medicines that have been appropriately evaluated for safety and efficacy through revised labelling. Given this goal, the adequacy of the pediatric clinical development plan and resulting safety database are critical factors to inform a favorable benefit-risk assessment for the intended use of the medicinal product. While extrapolation from adults can be used to support efficacy of drugs in children, there may be a reluctance to use the same approach in safety assessments, wiping out potential gains in trial efficiency through a reduction of sample size.

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Availability of artificial light and light-emitting devices have altered human temporal life, allowing 24-hour healthcare, commerce and production, and expanding social life around the clock. However, physiology and behavior that evolved in the context of 24 h solar days are frequently perturbed by exposure to artificial light at night. This is particularly salient in the context of circadian rhythms, the result of endogenous biological clocks with a rhythm of ~24 h.

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  • The increasing amount of high-dimensional biomolecular data has led to the development of statistical models for predicting disease, but many lack biological interpretability despite high accuracy.
  • A new method, called covariate-adjusted top-scoring pair (TSP), improves upon the standard TSP by using residuals from regression to better identify decision rules, taking into account influential covariates.
  • In tests, the covariate-adjusted TSP successfully identified new metabolite pairs for classifying diabetic kidney disease that were largely uncorrelated with established clinical variables, suggesting it offers greater biological insight than the standard method.
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