Browsing by Author "Eckstrand, Julie"

Filter results by typing the first few letters
Now showing 1 - 3 of 3
  • Thumbnail Image
    ItemOpen Access
    Lipid changes in the metabolome of a single case study with maple syrup urine disease (MSUD) after five days of improved diet adherence of controlled branched-chain amino acids (BCAA).
    (Molecular genetics and metabolism reports, 2020-12) Douglas, Teresa D; Newby, L Kristin; Eckstrand, Julie; Wixted, Douglas; Singh, Rani H

    Background

    Distinguishing systemic metabolic disruptions in maple syrup urine disease (MSUD) beyond amino acid pathways is under-investigated, yet important to understanding disease pathology and treatment options.

    Methods

    An adolescent female (15 years) with MSUD without liver transplant, attended 2 study visits, 5 days apart. Medical diet adherence was determined based on her 3-day diet records and plasma branched-chain amino acid (BCAA) concentrations at both study visits. Plasma from a single age- and sex-matched control (MURDOCK Study, Duke University) and the case patient were analyzed with UPLC/MS/MS for intensity (m/z), annotated, and normalized against a median of 1 (Metabolon, Morrisville NC). Differences between case/control and 5-day comparisons were defined as ≥ ǀ 0.5 ǀ.

    Results

    434 lipid metabolites were identified across samples; 90 (20.7%) were higher and 120 (27.6%) lower in the MSUD case at baseline compared with control. By study visit 2, plasma BCAA had declined, while 48 (53%) of elevated lipids and 14 (11.7%) of lower lipid values had moved to within ǀ 0.5 ǀ of control. Most shifts towards control by day 5 were seen in long-chain fatty acid intermediates (42%) and acylcarnitines (32%). Although androgenic (28%) and bile acid (23%) metabolites increased towards control, neither reached control level by day 5.

    Discussion

    This comparative metabolomics study in a single MSUD case and healthy control suggests intrinsic differences in MSUD lipid metabolism potentially influenced by therapeutic diet. Findings suggest influences on hormone regulation, fatty acid oxidation, and bile acid synthesis, but further studies are needed to confirm an association between MSUD and lipid dysregulation.

    Synopsis

    Within 5 days of improved dietary adherence, a single MSUD case experienced substantial changes in lipid markers potentially related to changes in plasma branched-chain amino acids.
  • Thumbnail Image
    ItemOpen Access
    The Cabarrus County COVID-19 Prevalence and Immunity (C3PI) Study: design, methods, and baseline characteristics.
    (American journal of translational research, 2022-01) Neighbors, Coralei E; Wu, Angie E; Wixted, Douglas G; Heidenfelder, Brooke L; Kingsbury, Carla A; Register, Heidi M; Louzao, Raul; Sloane, Richard; Eckstrand, Julie; Pieper, Carl C; Faldowski, Richard A; Denny, Thomas N; Woods, Christopher W; Newby, L Kristin

    Objectives

    Coronavirus Disease 2019 (COVID-19) is a viral illness with public health importance. The Cabarrus County COVID-19 Prevalence and Immunity (C3PI) Study is a prospective, longitudinal cohort study designed to contribute valuable information on community prevalence of active COVID-19 infection and SARS-CoV-2 antibodies as the pandemic and responses to it have and continue to evolve. We present the rationale, study design, and baseline characteristics of the C3PI Study.

    Methods

    We recruited 1,426 participants between June 2020 and August 2020 from the Measurement to Understand the Reclassification of Disease of Cabarrus/Kannapolis (MURDOCK) Study Community Registry and Biorepository, a previously established, community-based, longitudinal cohort. Participants completed a baseline survey and follow-up surveys every two weeks. A nested weighted, random sub-cohort (n=300) was recruited to measure the incidence and prevalence of active COVID-19 infection and SARS-CoV-2 IgG antibodies.

    Results

    The sub-cohort was younger (56 vs 61 years), had more men (39.0% vs 30.9%), and a higher proportion of Hispanic (11.0% vs 5.1%) and Black participants (17.0% vs 8.2%) compared with the overall cohort. They had similar anthropometrics and medical histories, but a greater proportion of the sub-cohort had a higher educational degree (36.1% vs 31.3%) and reported a pre-pandemic annual household income of >$90,000 (57.1% vs 47.9%).

    Conclusion

    This study is part of a multisite consortium that will provide critical data on the epidemiology of COVID-19 and community perspectives about the pandemic, behaviors and mitigation strategies, and individual and community burden in North Carolina.
  • Thumbnail Image
    ItemOpen Access
    The Project Baseline Health Study: a step towards a broader mission to map human health.
    (NPJ digital medicine, 2020-01) Arges, Kristine; Assimes, Themistocles; Bajaj, Vikram; Balu, Suresh; Bashir, Mustafa R; Beskow, Laura; Blanco, Rosalia; Califf, Robert; Campbell, Paul; Carin, Larry; Christian, Victoria; Cousins, Scott; Das, Millie; Dockery, Marie; Douglas, Pamela S; Dunham, Ashley; Eckstrand, Julie; Fleischmann, Dominik; Ford, Emily; Fraulo, Elizabeth; French, John; Gambhir, Sanjiv S; Ginsburg, Geoffrey S; Green, Robert C; Haddad, Francois; Hernandez, Adrian; Hernandez, John; Huang, Erich S; Jaffe, Glenn; King, Daniel; Koweek, Lynne H; Langlotz, Curtis; Liao, Yaping J; Mahaffey, Kenneth W; Marcom, Kelly; Marks, William J; Maron, David; McCabe, Reid; McCall, Shannon; McCue, Rebecca; Mega, Jessica; Miller, David; Muhlbaier, Lawrence H; Munshi, Rajan; Newby, L Kristin; Pak-Harvey, Ezra; Patrick-Lake, Bray; Pencina, Michael; Peterson, Eric D; Rodriguez, Fatima; Shore, Scarlet; Shah, Svati; Shipes, Steven; Sledge, George; Spielman, Susie; Spitler, Ryan; Schaack, Terry; Swamy, Geeta; Willemink, Martin J; Wong, Charlene A
    The Project Baseline Health Study (PBHS) was launched to map human health through a comprehensive understanding of both the health of an individual and how it relates to the broader population. The study will contribute to the creation of a biomedical information system that accounts for the highly complex interplay of biological, behavioral, environmental, and social systems. The PBHS is a prospective, multicenter, longitudinal cohort study that aims to enroll thousands of participants with diverse backgrounds who are representative of the entire health spectrum. Enrolled participants will be evaluated serially using clinical, molecular, imaging, sensor, self-reported, behavioral, psychological, environmental, and other health-related measurements. An initial deeply phenotyped cohort will inform the development of a large, expanded virtual cohort. The PBHS will contribute to precision health and medicine by integrating state of the art testing, longitudinal monitoring and participant engagement, and by contributing to the development of an improved platform for data sharing and analysis.