222 results on '"Carlson JC"'
Search Results
2. Diagnosis and Management of Insect Allergy: Barriers and Facilitators in the United States
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Carlson JC, Hajirawala M, and Hein N
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insect hypersensitivity ,venom ,anaphylaxis ,immunotherapy ,social determinants of health ,Immunologic diseases. Allergy ,RC581-607 - Abstract
John C Carlson,1 Monica Hajirawala,2 Nina Hein3 1Department of Pediatrics, Ochsner Health System, New Orleans, LA, USA; 2Department of Pediatric Allergy and Immunology, University of South Florida, St. Petersburg, FL, USA; 3Department of Allergy and Clinical Immunology, Tulane University, New Orleans, LA, USACorrespondence: John C Carlson, Department of Pediatrics, Ochsner Health System, 1315 Jefferson Hwy, New Orleans, LA, 20121, USA, Tel +1-504-842-3900, Fax +1-504-842-5848, Email john.carlson@ochsner.orgAbstract: While guidelines recommend testing and treatment for patients with venom-induced anaphylaxis to prevent morbidity and mortality, significant barriers prevent most patients from receiving the evaluation and treatments that they need. This review examines these barriers in the United States along with the facilitators that can be used to overcome them.Keywords: insect hypersensitivity, venom, anaphylaxis, immunotherapy, social determinants of health
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- 2022
3. MO‐G‐BRE‐06: Metrics of Success: Measuring Participation and Attitudes Related to Near‐Miss Incident Learning Systems
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Nyflot, MJ, primary, Kusano, AS, additional, Zeng, J, additional, Carlson, JC, additional, Novak, A, additional, Sponseller, P, additional, Jordan, L, additional, Kane, G, additional, and Ford, EC, additional
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- 2014
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4. Generation of free radicals and messenger function.
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Carlson JC and Sawada M
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- 1995
5. Standardized endosonographic evaluation of prostate cancer: receiver-operator-characteristic analysis
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Baran, GW, primary, Golin, A, additional, Bergsma, C, additional, Stone, T, additional, Wilson, P, additional, Reichardt, B, additional, Lobert, P, additional, Locke, CS, additional, Carlson, JC, additional, and Holly, LE, additional
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- 1987
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6. Impact of Psychological Stressors on Natural Killer Cell Function: A Comprehensive Analysis based on Stressor Type, Duration, Intensity, and Species.
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Katz AR, Huntwork MP, Kolls JK, Hewes JL, Ellsworth CR, Clark RDE, and Carlson JC
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Patients with natural killer (NK) cell deficiency or dysfunction are more susceptible to infections by Herpesviridae viruses, herpesvirus-related cancers, and macrophage activation syndromes. This review summarizes research on NK cell dysfunction following psychological stress, focusing on stressor type, duration, age of exposure, and species studied. Psychological stressors negatively affect NK cell activity (NKCA) across species. Prolonged stress leads to more significant decreases in NK cell number and function, with rehabilitation efforts proving ineffective in reversing these effects. Early life and prolonged stress exposure particularly increases the risk of infections and cancer due to impaired NKCA. The review also highlights that stress impacts males and females differently, with females exhibiting a more immunosuppressed NK cell phenotype. Notably, mice respond differently compared to humans and other animals, making them unsuitable for NK cell stress-related studies. Most studies measured NKCA using cytolytic assays against K-562 or YAC-1 cells. Although the exact mechanisms of NK cell dysfunction under stress remain unclear, potential causes include reduced release of secretory lysosomes with perforin or granzyme, impaired NK cell synapse formation, decreased expression of synapse-related molecules like CD2 or LFA-1 (CD11a), altered activating receptor expression, and dysregulated signaling pathways, such as decreased Erk1/2 phosphorylation and NFkB signaling. These mechanisms are not mutually exclusive, and future research is needed to clarify these pathways and develop therapeutic interventions for stress-induced immune dysregulation., (Copyright © 2024. Published by Elsevier Inc.)
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- 2024
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7. Corrigendum to "Nutritional depletion of total mixed rations by European starlings: Projected effects on dairy cow performance and potential intervention strategies to mitigate damage" (J. Dairy Sci. 101:1777-1784).
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Carlson JC, Stahl RS, DeLiberto ST, Wagner JJ, Engle TE, Engeman RM, Olson CS, Ellis JW, and Werner SJ
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- 2024
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8. Pediatrician-Authored Opinion/Editorial Articles Published in Newspapers Before and After the Start of the COVID-19 Pandemic.
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Eggers SJ, Katz BJ, Wood ME, Aragon SV, Mukerjee KA, and Carlson JC
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- Humans, United States, SARS-CoV-2, Pediatrics, Pandemics, Authorship, Publishing, COVID-19 epidemiology, Pediatricians, Newspapers as Topic statistics & numerical data
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Background: Pediatricians publish opinion/editorials in newspapers as a form of advocacy. No research has characterized these publications to determine the scope of this communication., Objective: We examined the characteristics of pediatrician-authored op-eds, comparing articles published in a seasonally matched six-month period before and after the onset of the COVID-19 pandemic., Methods: We reviewed 249 pediatrician-authored op-eds (109 before COVID-19; 140 during COVID-19 pandemic) over two six-month periods accessed through America's Newspapers database in June 2021. Each article was coded for topics covered, presumed motivations for the publication, and communication techniques used., Results: Total number of articles published by pediatricians was higher after the start of COVID-19 compared with a period before the pandemic. Authors commonly asked for legislative action before and during the COVID-19 pandemic, but within the COVID-19 pandemic authors more often asked for behavioral changes in the readers themselves. Personal stories were a common technique used in both time periods; shaming of government became more common during COVID-19., Conclusions: These data provide context for additional studies examining the usefulness of op-eds in pediatrician advocacy., Competing Interests: Declaration of Competing Interest None., (Copyright © 2024 Academic Pediatric Association. Published by Elsevier Inc. All rights reserved.)
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- 2024
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9. Exploratory assessment of the effect of systemic administration of soluble glycoprotein 130 on cognitive performance and chemokine levels in a mouse model of experimental traumatic brain injury.
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Gober IG, Russell AL, Shick TJ, Vagni VA, Carlson JC, Kochanek PM, and Wagner AK
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- Animals, Mice, Male, Chemokines metabolism, Interleukin-6 metabolism, Cognition drug effects, Cognition physiology, Brain Injuries, Traumatic drug therapy, Disease Models, Animal, Mice, Inbred C57BL, Cytokine Receptor gp130 metabolism, Maze Learning drug effects, Maze Learning physiology
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Uncontrolled neuroinflammation mediates traumatic brain injury (TBI) pathology and impairs recovery. Interleukin-6 (IL-6), a pleiotropic inflammatory regulator, is associated with poor clinical TBI outcomes. IL-6 operates via classical-signaling through membrane-bound IL-6 receptor (IL-6R) and trans-signaling through soluble IL-6 receptor (s)IL-6R. IL-6 trans-signaling specifically contributes to neuropathology, making it a potential precision therapeutic TBI target. Soluble glycoprotein 130 (sgp130) prevents IL-6 trans-signaling, sparing classical signaling, thus is a possible treatment. Mice received either controlled cortical impact (CCI) (6.0 ± 0.2 m/s; 2 mm; 50-60ms) or sham procedures. Vehicle (VEH) or sgp130-Fc was subcutaneously administered to sham (VEH or 1 µg) and CCI (VEH, 0.25 µg or 1 µg) mice on days 1, 4, 7, 10 and 13 post-surgery to assess effects on cognition [Morris Water Maze (MWM)] and ipsilateral hemisphere IL-6 related biomarkers (day 21 post-surgery). CCI + sgp130-Fc groups (0.25 µg and 1 µg) were combined for analysis given similar behavior/biomarker outcomes. CCI + VEH mice had longer latencies and path lengths to the platform and increased peripheral zone time versus Sham + VEH and Sham + sgp130-Fc mice, suggesting injury-induced impairments in learning and anxiety. CCI + sgp130-Fc mice had shorter platform latencies and path lengths and had decreased peripheral zone time, indicating a therapeutic benefit of sgp130-Fc after injury on learning and anxiety. Interestingly, Sham + sgp130-Fc mice had shorter platform latencies, path lengths and peripheral zone times than Sham + VEH mice, suggesting a beneficial effect of sgp130-Fc, independent of injury. CCI + VEH mice had increased brain IL-6 and decreased sgp130 levels versus Sham + VEH and Sham + sgp130-Fc mice. There was no treatment effect on IL-6, sIL6-R or sgp130 in Sham + VEH versus Sham + sgp130-Fc mice. There was also no treatment effect on IL-6 in CCI + VEH versus CCI + sgp130-Fc mice. However, CCI + sgp130-Fc mice had increased sIL-6R and sgp130 versus CCI + VEH mice, demonstrating sgp130-Fc treatment effects on brain biomarkers. Inflammatory chemokines (MIP-1β, IP-10, MIG) were increased in CCI + VEH mice versus Sham + VEH and Sham + sgp130-Fc mice. However, CCI + sgp130-Fc mice had decreased chemokine levels versus CCI + VEH mice. IL-6 positively correlated, while sgp130 negatively correlated, with chemokine levels. Overall, we found that systemic sgp130-Fc treatment after CCI improved learning, decreased anxiety and reduced CCI-induced brain chemokines. Future studies will explore sex-specific dosing and treatment mechanisms for sgp130-Fc therapy., (© 2024. The Author(s).)
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- 2024
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10. Associations between fasting glucose rate-of-change and the missense variant, rs373863828, in an adult Samoan cohort.
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Rivara AC, Russell EM, Carlson JC, Pomer A, Naseri T, Reupena MS, Manna SL, Viali S, Minster RL, Weeks DE, DeLany JP, Kershaw EE, McGarvey ST, and Hawley NL
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- Humans, Female, Male, Middle Aged, Adult, Mutation, Missense, Polymorphism, Single Nucleotide, Alleles, Samoa, Cohort Studies, Body Mass Index, Genotype, Longitudinal Studies, Cross-Sectional Studies, Aged, Tumor Suppressor Proteins, Diabetes Mellitus, Type 2 genetics, Blood Glucose metabolism, Fasting blood
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Background: The A allele of rs373863828 in CREB3 regulatory factor is associated with high Body Mass Index, but lower odds of type 2 diabetes. These associations have been replicated elsewhere, but to date all studies have been cross-sectional. Our aims were (1) to describe the development of type 2 diabetes and change in fasting glucose between 2010 and 2018 among a longitudinal cohort of adult Samoans without type 2 diabetes or who were not using diabetes medications at baseline, and (2) to examine associations between fasting glucose rate-of-change (mmol/L per year) and the A allele of rs373863828., Methods: We describe and test differences in fasting glucose, the development of type 2 diabetes, body mass index, age, smoking status, physical activity, urbanicity of residence, and household asset scores between 2010 and 2018 among a cohort of n = 401 adult Samoans, selected to have a ~2:2:1 ratio of GG:AG: AA rs373863828 genotypes. Multivariate linear regression was used to test whether fasting glucose rate-of-change was associated with rs373863828 genotype, and other baseline variables., Results: By 2018, fasting glucose and BMI significantly increased among all genotype groups, and a substantial portion of the sample developed type 2 diabetes mellitus. The A allele was associated with a lower fasting glucose rate-of-change (β = -0.05 mmol/L/year per allele, p = 0.058 among women; β = -0.004 mmol/L/year per allele, p = 0.863 among men), after accounting for baseline variables. Mean fasting glucose and mean BMI increased over an eight-year period and a substantial number of individuals developed type 2 diabetes by 2018. However, fasting glucose rate-of-change, and type 2 diabetes development was lower among females with AG and AA genotypes., Conclusions: Further research is needed to understand the effect of the A allele on fasting glucose and type 2 diabetes development. Based on our observations that other risk factors increased over time, we advocate for the continued promotion for diabetes prevention and treatment programming, and the reduction of modifiable risk factors, in this setting., Competing Interests: The authors have declared that no competing interests exist., (Copyright: © 2024 Rivara et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.)
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- 2024
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11. Allergen immunotherapy in patients with severe asthma: A need for prospective trials.
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Huntwork MP and Carlson JC
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- Humans, Prospective Studies, Child, Severity of Illness Index, Allergens immunology, Clinical Trials as Topic, Asthma therapy, Asthma immunology, Desensitization, Immunologic methods
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- 2024
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12. Fungal Sensitization and Human Allergic Disease.
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Treadwell S, Green M, Gowda G, Levetin E, and Carlson JC
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- Humans, Antigens, Fungal immunology, Allergens immunology, Mycoses immunology, Fungi immunology, Hypersensitivity immunology
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Purpose of the Review: Fungal sensitizations have been associated with hypersensitivity reactions with variable levels of evidence available to link types of fungi with human disease. We conducted systematic reviews of the literature to identify the strength of evidence linking lesser-studied fungi for which there are commercially available extracts to identify populations in which they were useful in clinical practice., Recent Findings: Excluding five fungi for which hundreds of articles were identified, there are 54 articles on the remaining fungi with clinical data. For 12 of the fungi, the prevalence of fungal sensitization varies in different hypersensitivity disorders due to factors related to geographic areas, age, and other underlying medical conditions. There were no studies linking seven genera to human disease. Most of the commercially available fungal extracts are uncommonly associated with hypersensitivity reactions in humans. Specific extracts may be useful in particular disease states such as allergic fungal sinusitis or allergic bronchopulmonary mycosis, or when routine testing fails to identify a cause of uncontrolled disease, such as in asthma., (© 2024. The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature.)
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- 2024
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13. Epilepsy panel testing criteria: A clinical assessment.
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Fazenbaker AC, Munro CD, Carlson JC, Durst AL, and Vento JM
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- Humans, Female, Male, Retrospective Studies, Child, Adolescent, Adult, Epilepsy diagnosis, Epilepsy genetics, Genetic Testing methods
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Epilepsy is a common, and often genetic, neurological disorder. Few guidelines exist to help medical providers or insurance companies decide when to order or cover epilepsy panels for patients with epilepsy. The most recent guidelines were published by NSGC after this study's data collection. Since 2017, the Genetic Testing Stewardship Program (GTSP) at UPMC Children's Hospital of Pittsburgh (CHP) has been utilizing a set of internally developed epilepsy panel (EP) testing criteria to facilitate appropriate EP ordering practices. The purpose of this study was to assess these testing criteria by determining their sensitivities and positive predictive values (PPV). Retrospective chart review of the electronic medical record (EMR) was performed for 1242 CHP Neurology patients that were evaluated for a primary diagnosis of epilepsy between 2016 and 2018. One hundred and nine patients had EPs at various testing laboratories. Of the patients that met criteria, 17 had diagnostic EPs and 54 had negative EPs. Criteria were organized into category groupings (C1-C4), and analyzed alone for C1, in pairs for C2, etc. The highest sensitivity and PPV results in each category grouping were: C1 (64.7%, 60%); C2, (88%, 30.3%); C3, (94.1%, 27.1%); C4, (94.1%, 25.4%). Family history was crucial to increasing sensitivity. Confidence intervals (CIs) narrowed as category grouping level increased, though this was not statistically significant due to the considerable CI overlap across category groupings. The PPV from C4 was applied to the untested population cohort and predicted 121 patients with unidentified positive EPs. This study presents data supporting the predictive capabilities of EP testing criteria and suggests the addition of a family history criterion. This study impacts public health by encouraging the adoption of evidence-driven insurance policies and by suggesting guidelines to ease EP ordering and coverage decisions, which could potentially improve patient access to EP testing., (© 2023 National Society of Genetic Counselors.)
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- 2024
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14. Impact of Foliar Fungicide Application on the Culturable Fungal Endophyte Community of Soybean Seed in the Midwest United States.
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Batzer JC, Shirazi A, Lawson M, Mathew FM, Sureshbabu BM, Smith DL, and Mueller DS
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- United States, Glycine max, Endophytes, Alternaria, Seeds, Iowa, Fungicides, Industrial pharmacology, Fusarium, Saccharomycetales
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The purpose of our study was to determine whether the application of quinone outside inhibitor (QoI) and pyrazole-carboxamide fungicides as a tank mix would impact the endophyte community of soybean seed. Field trials during 2018 in Iowa, South Dakota, and Wisconsin, U.S.A., investigated the impact of a single combination fungicide spray at early pod set in soybeans. The composition of culturable endophytic fungi in mature soybean seed was assessed on three cultivars per state, with maturity groups (MGs) ranging from 1.1 to 4.7. An unusually wet 2018 season delayed harvest, which led to a high level of fungal growth in grain. The survey included 1,080 asymptomatic seeds that were disinfested and individually placed on 5-cm-diameter Petri plates of acidified water agar. The survey yielded 721 fungal isolates belonging to 24 putative species in seven genera; taxa were grouped into genera based on a combination of morphological and molecular evidence. The dominant genera encountered in the survey were Alternaria , Diaporthe , and Fusarium . The study showed that the fungicide treatment reduced the incidence of Fusarium in Wisconsin seed, increased the incidence of Diaporthe in seed from all states, and had no impact on the incidence of Alternaria . This is one of the first attempts to characterize the diversity of seed endophytes in soybean and the first to characterize the impacts of fungicide spraying on these endophyte communities across three states. Our study provides evidence that the impact of a fungicide spray on soybean seed endophyte communities may be influenced by site, weather, and cultivar maturity group., Competing Interests: The author(s) declare no conflict of interest.
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- 2024
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15. Controversies in Antibiotic Use for Chronic Wet Cough in Children.
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Liptzin DR, Neemann K, McCulloh R, Singleton R, Smith P, and Carlson JC
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- Child, Humans, Chronic Disease, Anti-Bacterial Agents therapeutic use, Cough drug therapy
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Competing Interests: Declaration of Competing Interest All authors are funded through the ECHO ISPCN NIH network. R.M. also receives funding from Merck for vaccine communication research. There are no real or perceived conflicts of interest in this commentary including the design, writing, or decision to submit.
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- 2024
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16. Geographical and temporal distribution of Megalopygidae in the United States and Puerto Rico.
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Sancio EP, Kratzer CA, and Carlson JC
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Background: The venom of Megalopygidae caterpillars causes inflammation and pain. Understanding geographic and temporal variation in exposure will help physicians and the public understand when and where the species in this family may be encountered., Methods: Photographs uploaded by community scientists to the iNaturalist database were reviewed and identified. GIS data points were used to model distribution of species based on geographic variables at the location of photographs for each group. Data on temporal abundance was also noted., Results: Maps were created predicting the geographic range for 11 species of Megalopygidae. Peak larval abundance for the most abundant species, Megalopyge opercularis , was determined as September in the southeastern United States and October in south-central US., Conclusion: Geographic and temporal distributions, based on community science observations, allow for more accurate predictions on the likelihood of encountering venomous Megalopygidae caterpillars., Competing Interests: The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (© 2024 The Authors.)
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- 2023
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17. Pairing patient photographs of arthropods with expert identification to uncover causes of bites and stings.
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Ravi S, Stephanos K, and Carlson JC
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- Animals, Humans, Scorpions, Arthropods, Bites and Stings, Hymenoptera, Spiders, Insect Bites and Stings, Spider Bites
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BugGuide.net is a website where arthropod photographs submitted by the public are identified by professional and amateur entomologists. In April 2023 posts containing "bitten" or "stung" were reviewed. Of 39 verified bites, 10 were blood-feeding insects. Others included 9 Heteroptera, 6 spiders, 6 lacewings. 110 posts of stings included 44 social Hymenoptera, 33 solitary Hymenoptera, 5 Heteroptera, 20 caterpillars and 4 scorpions. Injury from lacewing larvae, true bugs, solitary Hymenoptera and caterpillars was unexpectedly common., Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (Copyright © 2023 Elsevier Ltd. All rights reserved.)
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- 2023
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18. Characterization of sleep apnea among a sample of adults from Samoa.
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Heinsberg LW, Pomer A, Cade BE, Carlson JC, Naseri T, Reupena MS, Viali S, Weeks DE, McGarvey ST, Redline S, and Hawley NL
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Sleep apnea is a public health concern around the world, but little research has been dedicated to examining this issue in low- and middle-income countries, including Samoa. Using data collected through the Soifua Manuia ("Good Health") study, which aimed to investigate the impact of the body mass index (BMI)-associated genetic variant rs373863828 in CREB3 Regulatory Factor ( CREBRF ) on metabolic traits in Samoan adults, we examined the sample prevalence and characteristics of sleep apnea using data collected with a validated home sleep apnea device (WatchPAT, Itamar). A total of 330 participants (sampled to overrepresent the obesity-risk allele of interest) had sleep data available. Participants (53.3% female) had a mean (SD) age of 52.0 (9.9) years and BMI of 35.5 (7.5) kg/m
2 and 36.3% of the sample had type 2 diabetes. Based on the 3% and 4% apnea hypopnea indices (AHI) and the 4% oxygen desaturation index (ODI), descriptive analyses revealed that many participants had potentially actionable sleep apnea defined as >5 events/hr (87.9%, 68.5%, and 71.2%, respectively) or clinically actionable sleep apnea defined as ≥15 events/hr (54.9%, 31.5%, and 34.5%, respectively). Sleep apnea was more severe in men; for example, clinically actionable sleep apnea (≥15) based on the AHI 3% definition was observed in 61.7% of men and 48.9% of women. Correction for non-representational sampling related to the CREBRF obesity-risk allele resulted in only slightly lower estimates. Across the AHI 3%, AHI 4%, and ODI 4%, multiple linear regression revealed associations between a greater number of events/hr and higher age, male sex, higher body mass index, higher abdominal-hip circumference ratio, and geographic region of residence. Our study identified a much higher frequency of sleep apnea in Samoa compared with published data from other studies, but similar predictors. Continued research addressing generalizability of these findings, as well as a specific focus on diagnosis and affordable and equitable access to treatment, is needed to alleviate the burden of sleep apnea in Samoa and around the world.- Published
- 2023
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19. A statistical framework for powerful multi-trait rare variant analysis in large-scale whole-genome sequencing studies.
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Li X, Chen H, Selvaraj MS, Van Buren E, Zhou H, Wang Y, Sun R, McCaw ZR, Yu Z, Arnett DK, Bis JC, Blangero J, Boerwinkle E, Bowden DW, Brody JA, Cade BE, Carson AP, Carlson JC, Chami N, Chen YI, Curran JE, de Vries PS, Fornage M, Franceschini N, Freedman BI, Gu C, Heard-Costa NL, He J, Hou L, Hung YJ, Irvin MR, Kaplan RC, Kardia SLR, Kelly T, Konigsberg I, Kooperberg C, Kral BG, Li C, Loos RJF, Mahaney MC, Martin LW, Mathias RA, Minster RL, Mitchell BD, Montasser ME, Morrison AC, Palmer ND, Peyser PA, Psaty BM, Raffield LM, Redline S, Reiner AP, Rich SS, Sitlani CM, Smith JA, Taylor KD, Tiwari H, Vasan RS, Wang Z, Yanek LR, Yu B, Rice KM, Rotter JI, Peloso GM, Natarajan P, Li Z, Liu Z, and Lin X
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Large-scale whole-genome sequencing (WGS) studies have improved our understanding of the contributions of coding and noncoding rare variants to complex human traits. Leveraging association effect sizes across multiple traits in WGS rare variant association analysis can improve statistical power over single-trait analysis, and also detect pleiotropic genes and regions. Existing multi-trait methods have limited ability to perform rare variant analysis of large-scale WGS data. We propose MultiSTAAR, a statistical framework and computationally-scalable analytical pipeline for functionally-informed multi-trait rare variant analysis in large-scale WGS studies. MultiSTAAR accounts for relatedness, population structure and correlation among phenotypes by jointly analyzing multiple traits, and further empowers rare variant association analysis by incorporating multiple functional annotations. We applied MultiSTAAR to jointly analyze three lipid traits (low-density lipoprotein cholesterol, high-density lipoprotein cholesterol and triglycerides) in 61,861 multi-ethnic samples from the Trans-Omics for Precision Medicine (TOPMed) Program. We discovered new associations with lipid traits missed by single-trait analysis, including rare variants within an enhancer of NIPSNAP3A and an intergenic region on chromosome 1.
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- 2023
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20. A short, safe rush-induction protocol for aeroallergen immunotherapy.
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Hajirawala M, Hardeman A, Huntwork MP, and Carlson JC
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- Humans, Desensitization, Immunologic adverse effects, Desensitization, Immunologic methods, Allergens, Immunotherapy methods
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- 2023
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21. Improving imputation quality in Samoans through the integration of population-specific sequences into existing reference panels.
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Carlson JC, Krishnan M, Liu S, Anderson KJ, Zhang JZ, Yapp TJ, Chiyka EA, Dikec DA, Cheng H, Naseri T, Reupena MS, Viali S, Deka R, Hawley NL, McGarvey ST, Weeks DE, and Minster RL
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Genotype imputation is fundamental to association studies, and yet even gold standard panels like TOPMed are limited in the populations for which they yield good imputation. Specifically, Pacific Islanders are poorly represented in extant panels. To address this, we constructed an imputation reference panel using 1,285 Samoan individuals with whole-genome sequencing, combined with 1000 Genomes (1000G) samples, to create a reference panel that better represents Pacific Islander, specifically Samoan, genetic variation. We compared this panel to 1000G and TOPMed panels based on imputed variants using genotyping array data for 1,834 Samoan participants who were not part of the panels. The 1000G + 1285 Samoan panel yielded up to 2.25-2.76 times more well-imputed (r
2 ≥ 0.80) variants than TOPMed and 1000G. There was improved imputation accuracy across the minor allele frequency (MAF) spectrum, although it was more pronounced for variants with 0.01 ≤ MAF ≤ 0.05. Imputation accuracy (r2 ) was greater for population-specific variants (high fixation index, FST ) and those from larger haplotypes (high LD score). The gain in imputation accuracy over TOPMed was largest for small haplotypes (low LD score), reflecting the Samoan panel's ability to capture population-specific variation not well tagged by other panels. We also augmented the 1000G reference panel with varying numbers of Samoan samples and found that panels with 48 or more Samoans included outperformed TOPMed for all variants with MAF ≥ 0.001. This study identifies variants with improved imputation using population-specific reference panels and provides a framework for constructing other population-specific reference panels.- Published
- 2023
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22. Rare variants in long non-coding RNAs are associated with blood lipid levels in the TOPMed whole-genome sequencing study.
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Wang Y, Selvaraj MS, Li X, Li Z, Holdcraft JA, Arnett DK, Bis JC, Blangero J, Boerwinkle E, Bowden DW, Cade BE, Carlson JC, Carson AP, Chen YI, Curran JE, de Vries PS, Dutcher SK, Ellinor PT, Floyd JS, Fornage M, Freedman BI, Gabriel S, Germer S, Gibbs RA, Guo X, He J, Heard-Costa N, Hildalgo B, Hou L, Irvin MR, Joehanes R, Kaplan RC, Kardia SL, Kelly TN, Kim R, Kooperberg C, Kral BG, Levy D, Li C, Liu C, Lloyd-Jone D, Loos RJ, Mahaney MC, Martin LW, Mathias RA, Minster RL, Mitchell BD, Montasser ME, Morrison AC, Murabito JM, Naseri T, O'Connell JR, Palmer ND, Preuss MH, Psaty BM, Raffield LM, Rao DC, Redline S, Reiner AP, Rich SS, Ruepena MS, Sheu WH, Smith JA, Smith A, Tiwari HK, Tsai MY, Viaud-Martinez KA, Wang Z, Yanek LR, Zhao W, Rotter JI, Lin X, Natarajan P, and Peloso GM
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- Humans, Genome-Wide Association Study, Precision Medicine, Whole Genome Sequencing methods, Lipids genetics, Polymorphism, Single Nucleotide genetics, RNA, Long Noncoding genetics
- Abstract
Long non-coding RNAs (lncRNAs) are known to perform important regulatory functions in lipid metabolism. Large-scale whole-genome sequencing (WGS) studies and new statistical methods for variant set tests now provide an opportunity to assess more associations between rare variants in lncRNA genes and complex traits across the genome. In this study, we used high-coverage WGS from 66,329 participants of diverse ancestries with measurement of blood lipids and lipoproteins (LDL-C, HDL-C, TC, and TG) in the National Heart, Lung, and Blood Institute (NHLBI) Trans-Omics for Precision Medicine (TOPMed) program to investigate the role of lncRNAs in lipid variability. We aggregated rare variants for 165,375 lncRNA genes based on their genomic locations and conducted rare-variant aggregate association tests using the STAAR (variant-set test for association using annotation information) framework. We performed STAAR conditional analysis adjusting for common variants in known lipid GWAS loci and rare-coding variants in nearby protein-coding genes. Our analyses revealed 83 rare lncRNA variant sets significantly associated with blood lipid levels, all of which were located in known lipid GWAS loci (in a ±500-kb window of a Global Lipids Genetics Consortium index variant). Notably, 61 out of 83 signals (73%) were conditionally independent of common regulatory variation and rare protein-coding variation at the same loci. We replicated 34 out of 61 (56%) conditionally independent associations using the independent UK Biobank WGS data. Our results expand the genetic architecture of blood lipids to rare variants in lncRNAs., Competing Interests: Declaration of interests P.N. reports research grants from Allelica, Apple, Amgen, Boston Scientific, Genentech/Roche, and Novartis; personal fees from Allelica, Apple, AstraZeneca, Blackstone Life Sciences, Eli Lilly & Co, Foresite Labs, Genentech/Roche, GV, HeartFlow, Magnet Biomedicine, and Novartis; scientific advisory board membership of Esperion Therapeutics, Preciseli, and TenSixteen Bio; scientific co-founder of TenSixteen Bio; equity in MyOme, Preciseli, and TenSixteen Bio; and spousal employment at Vertex Pharmaceuticals, all unrelated to the present work. B.M.P. serves on the Steering Committee of the Yale Open Data Access Project funded by Johnson & Johnson. L.M.R., S.S.R., and R.M. are consultants for the TOPMed Administrative Coordinating Center (through Westat). M.E.M. receives funding from Regeneron Pharmaceutical Inc. unrelated to this work. X. Lin is a consultant of AbbVie Pharmaceuticals and Verily Life Sciences. P.T.E. receives sponsored research support from Bayer AG, IBM Research, Bristol Myers Squibb, Pfizer, and Novo Nordisk; he has also served on advisory boards or consulted for Bayer AG, MyoKardia, and Novartis. A.P.C. previously received investigator-initiated grant support from Amgen, Inc. unrelated to the present work., (Copyright © 2023 American Society of Human Genetics. All rights reserved.)
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- 2023
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23. Rare variant modifier analysis identifies variants in SEC24D associated with orofacial cleft subtypes.
- Author
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Curtis SW, Carlson JC, Beaty TH, Murray JC, Weinberg SM, Marazita ML, Cotney JL, Cutler DJ, Epstein MP, and Leslie EJ
- Subjects
- Child, Humans, Alleles, Binding Sites, Vesicular Transport Proteins, Cleft Lip genetics, Cleft Palate genetics
- Abstract
As one of the most common structural birth defects, orofacial clefts (OFCs) have been studied for decades, and recent studies have demonstrated that there are genetic differences between the different phenotypic presentations of OFCs. However, the contribution of rare genetic variation genome-wide to different subtypes of OFCs has been understudied, with most studies focusing on common genetic variation or rare variation within targeted regions of the genome. Therefore, we used whole-genome sequencing data from the Gabriella Miller Kids First Pediatric Research Program to conduct a gene-based burden analysis to test for genetic modifiers of cleft lip (CL) vs cleft lip and palate (CLP). We found that there was a significantly increased burden of rare variants in SEC24D in CL cases compared to CLP cases (p = 6.86 [Formula: see text] 10
-7 ). Of the 15 variants within SEC24D, 53.3% were synonymous, but overlapped a known craniofacial enhancer. We then tested whether these variants could alter predicted transcription factor binding sites (TFBS), and found that the rare alleles destroyed binding sites for 9 transcription factors (TFs), including Pax1 (p = 0.0009), and created binding sites for 23 TFs, including Pax6 (p = 6.12 [Formula: see text] 10-5 ) and Pax9 (p = 0.0001), which are known to be involved in normal craniofacial development, suggesting a potential mechanism by which these synonymous variants could have a functional impact. Overall, this study indicates that rare genetic variation may contribute to the phenotypic heterogeneity of OFCs and suggests that regulatory variation may also contribute and warrant further investigation in future studies of genetic variants controlling risk to OFC., (© 2023. The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature.)- Published
- 2023
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24. Outcomes Research in Underrepresented Patients Is Needed to Verify Medication Effectiveness.
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Carlson JC, Hardeman A, and Hein N
- Subjects
- Humans, Outcome Assessment, Health Care
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- 2023
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25. A Case Study in Health Disparities: Barriers to Immunotherapy for Venom-Induced Anaphylaxis.
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Satyavarapu I, Hein N, and Carlson JC
- Subjects
- Humans, Wasp Venoms therapeutic use, Immunotherapy, Desensitization, Immunologic, Anaphylaxis therapy, Insect Bites and Stings therapy, Bee Venoms therapeutic use
- Published
- 2023
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26. A Scoping Review of Physician Advocacy on Twitter.
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Cahill AM and Carlson JC
- Abstract
Twitter has been adopted by physicians across most medical specialties; it allows for the wide dissemination of information and calls to action, brings new stakeholders into collations, promotes academic engagement, and fosters collaboration between academia and private practice. In this review of the literature, we briefly outline the state of advocacy in health care and summarize current Twitter-based advocacy efforts in the major specialties of health care, identifying both successful strategies as well as gaps in Twitter advocacy research. Relevant articles were obtained via PubMed and Google Scholar searches using the phrases "Twitter advocacy healthcare," "[specialty name] Twitter" and "[specialty name] Twitter advocacy." Several overarching themes were found to be widely utilized in specialty-specific discussions of Twitter advocacy efforts: organizing under a specific hashtag, fostering dialogue between stakeholders, and tweeting using personalized, action-oriented language. Fields such as pediatrics, heme/onc, ENT, and ophthalmology have most thoroughly embraced the desire to learn how to most effectively advocate on Twitter. Other fields such as OBGYN, cardiology, and surgery have less academic focus on online advocacy. Outside of advocacy efforts, the research and academic benefits of Twitter are well described in nearly every specialty. In conclusion, while clinicians are encouraged to advocate online, only broad strategies for online engagement are currently offered. Additional research into the details of how to successfully create an online profile and Twitter presence is needed to ensure all physicians are able to maximize their advocacy efforts, with clarification of the goals and objectives of this engagement also required., Competing Interests: The authors have declared that no competing interests exist., (Copyright © 2023, Cahill et al.)
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- 2023
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27. Association of rs9939609 in FTO with BMI among Polynesian peoples living in Aotearoa New Zealand and other Pacific nations.
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Krishnan M, Phipps-Green A, Russell EM, Major TJ, Cadzow M, Stamp LK, Dalbeth N, Hindmarsh JH, Qasim M, Watson H, Liu S, Carlson JC, Minster RL, Hawley NL, Naseri T, Reupena MS, Deka R, McGarvey ST, Merriman TR, Murphy R, and Weeks DE
- Subjects
- Humans, Alpha-Ketoglutarate-Dependent Dioxygenase FTO genetics, Bayes Theorem, Genetic Predisposition to Disease, New Zealand, Polymorphism, Single Nucleotide, Body Mass Index, Maori People genetics, Pacific Island People genetics
- Abstract
The fat mass and obesity associated (FTO) locus consistently associates with higher body mass index (BMI) across diverse ancestral groups. However, previous small studies of people of Polynesian ancestries have failed to replicate the association. In this study, we used Bayesian meta-analysis to test rs9939609, the most replicated FTO variant, for association with BMI with a large sample (n = 6095) of Aotearoa New Zealanders of Polynesian (Māori and Pacific) ancestry and of Samoan people living in the Independent State of Samoa and in American Samoa. We did not observe statistically significant association within each separate Polynesian subgroup. Bayesian meta-analysis of the Aotearoa New Zealand Polynesian and Samoan samples resulted in a posterior mean effect size estimate of +0.21 kg/m
2 , with a 95% credible interval [+0.03 kg/m2 , +0.39 kg/m2 ]. While the Bayes Factor (BF) of 0.77 weakly favors the null, the BF = 1.4 Bayesian support interval is [+0.04, +0.20]. These results suggest that rs9939609 in FTO may have a similar effect on mean BMI in people of Polynesian ancestries as previously observed in other ancestral groups., (© 2023. The Author(s), under exclusive licence to The Japan Society of Human Genetics.)- Published
- 2023
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28. A Polynesian - specific missense CETP variant alters the lipid profile.
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Moors J, Krishnan M, Sumpter N, Takei R, Bixley M, Cadzow M, Major TJ, Phipps-Green A, Topless R, Merriman M, Rutledge M, Morgan B, Carlson JC, Zhang JZ, Russell EM, Sun G, Cheng H, Weeks DE, Naseri T, Reupena MS, Viali S, Tuitele J, Hawley NL, Deka R, McGarvey ST, de Zoysa J, Murphy R, Dalbeth N, Stamp L, Taumoepeau M, King F, Wilcox P, Rapana N, McCormick S, Minster RL, Merriman TR, and Leask M
- Subjects
- Humans, Cholesterol, LDL, Cholesterol, HDL genetics, Polymorphism, Genetic, Cholesterol Ester Transfer Proteins genetics, Maori People, Pacific Island People
- Abstract
Identifying population-specific genetic variants associated with disease and disease-predisposing traits is important to provide insights into the genetic determinants of health and disease between populations, as well as furthering genomic justice. Various common pan-population polymorphisms at CETP associate with serum lipid profiles and cardiovascular disease. Here, sequencing of CETP identified a missense variant rs1597000001 (p.Pro177Leu) specific to Māori and Pacific people that associates with higher HDL-C and lower LDL-C levels. Each copy of the minor allele associated with higher HDL-C by 0.236 mmol/L and lower LDL-C by 0.133 mmol/L. The rs1597000001 effect on HDL-C is comparable with CETP Mendelian loss-of-function mutations that result in CETP deficiency, consistent with our data, which shows that rs1597000001 lowers CETP activity by 27.9%. This study highlights the potential of population-specific genetic analyses for improving equity in genomics and health outcomes for population groups underrepresented in genomic studies., Competing Interests: The authors declare no competing interests., (© 2023 The Authors.)
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- 2023
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29. Alpha-gal syndrome is an immunoparasitologic disease.
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Carlson JC
- Subjects
- Humans, Food Hypersensitivity, Tick Bites
- Published
- 2023
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30. Rare genetic variants in SEC24D modify orofacial cleft phenotypes.
- Author
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Curtis SW, Carlson JC, Beaty TH, Murray JC, Weinberg SM, Marazita ML, Cotney JL, Cutler DJ, Epstein MP, and Leslie EJ
- Abstract
As one of the most common structural birth defects, orofacial clefts (OFCs) have been studied for decades, and recent studies have demonstrated that there are genetic differences between the different phenotypic presentations of OFCs. However, the contribution of rare genetic variation genome-wide to different subtypes of OFCs has been understudied, with most studies focusing on common genetic variation or rare variation within targeted regions of the genome. Therefore, we used whole-genome sequencing data from the Gabriella Miller Kids First Pediatric Research Program to conduct a gene-based burden analysis to test for genetic modifiers of cleft lip (CL) vs cleft lip and palate (CLP). We found that there was a significantly increased burden of rare variants in SEC24D in CL cases compared to CLP cases (p=6.86×10
-7 ). Of the 15 variants within SEC24D , 53.3% were synonymous, but overlapped a known craniofacial enhancer. We then tested whether these variants could alter predicted transcription factor binding sites (TFBS), and found that the rare alleles destroyed binding sites for 9 transcription factors (TFs), including Pax1 (p=0.0009), and created binding sites for 23 TFs, including Pax6 (p=6.12×10-5 ) and Pax9 (p= 0.0001), which are known to be involved in normal craniofacial development, suggesting a potential mechanism by which these synonymous variants could have a functional impact. Overall, this study demonstrates that rare genetic variation contributes to the phenotypic heterogeneity of OFCs and suggests that regulatory variation may also contribute and warrant further investigation in future studies of genetic variants controlling risk to OFC., Competing Interests: Conflicts of Interest The authors have no conflicts to disclose.- Published
- 2023
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31. Protocol: Implementation and evaluation of an adolescent-mediated intervention to improve glycemic control and diabetes self-management among Samoan adults.
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Hawley NL, Rivara AC, Naseri J, Faumuina K, Potoa'e-Solaita N, Iopu F, Faiai M, Naveno E, Tasele S, Lefale T, Lantini R, Carlson JC, Rabin TL, Semaia P, Mugadza P, and Rosen RK
- Subjects
- Adult, Adolescent, Humans, Glycemic Control, Ethnicity, Minority Groups, Health Behavior, Randomized Controlled Trials as Topic, Diabetes Mellitus, Type 2 therapy, Diabetes Mellitus, Type 2 diagnosis, Self-Management
- Abstract
Background: Diagnoses of Type 2 Diabetes in the United States have more than doubled in the last two decades. One minority group at disproportionate risk are Pacific Islanders who face numerous barriers to prevention and self-care. To address the need for prevention and treatment in this group, and building on the family-centered culture, we will pilot test an adolescent-mediated intervention designed to improve the glycemic control and self-care practices of a paired adult family member with diagnosed diabetes., Methods: We will conduct a randomized controlled trial in American Samoa among n = 160 dyads (adolescent without diabetes, adult with diabetes). Adolescents will receive either a six-month diabetes intervention or a leadership and life skills-focused control curriculum. Aside from research assessments we will have no contact with the adults in the dyad who will proceed with their usual care. To test our hypothesis that adolescents will be effective conduits of diabetes knowledge and will support their paired adult in the adoption of self-care strategies, our primary efficacy outcomes will be adult glycemic control and cardiovascular risk factors (BMI, blood pressure, waist circumference). Secondarily, since we believe exposure to the intervention may encourage positive behavior change in the adolescent themselves, we will measure the same outcomes in adolescents. Outcomes will be measured at baseline, after active intervention (six months post-randomization) and at 12-months post-randomization to examine maintenance effects. To determine potential for sustainability and scale up, we will examine intervention acceptability, feasibility, fidelity, reach, and cost., Discussion: This study will explore Samoan adolescents' ability to act as agents of familial health behavior change. Intervention success would produce a scalable program with potential for replication in other family-centered ethnic minority groups across the US who are the ideal beneficiaries of innovations to reduce chronic disease risk and eliminate health disparities., Competing Interests: The authors have declared that no competing interests exist., (Copyright: © 2023 Hawley et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.)
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- 2023
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32. Multivariate analysis of a missense variant in CREBRF reveals associations with measures of adiposity in people of Polynesian ancestries.
- Author
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Zhang JZ, Heinsberg LW, Krishnan M, Hawley NL, Major TJ, Carlson JC, Harré Hindmarsh J, Watson H, Qasim M, Stamp LK, Dalbeth N, Murphy R, Sun G, Cheng H, Naseri T, Reupena MS, Kershaw EE, Deka R, McGarvey ST, Minster RL, Merriman TR, and Weeks DE
- Subjects
- Humans, Bayes Theorem, Body Mass Index, Multivariate Analysis, Obesity genetics, Mutation, Missense, Adiposity, Pacific Island People, Tumor Suppressor Proteins genetics
- Abstract
The minor allele of rs373863828, a missense variant in CREB3 Regulatory Factor, is associated with several cardiometabolic phenotypes in Polynesian peoples. To better understand the variant, we tested the association of rs373863828 with a panel of correlated phenotypes (body mass index [BMI], weight, height, HDL cholesterol, triglycerides, and total cholesterol) using multivariate Bayesian association and network analyses in a Samoa cohort (n = 1632), Aotearoa New Zealand cohort (n = 1419), and combined cohort (n = 2976). An expanded set of phenotypes (adding estimated fat and fat-free mass, abdominal circumference, hip circumference, and abdominal-hip ratio) was tested in the Samoa cohort (n = 1496). In the Samoa cohort, we observed significant associations (log
10 Bayes Factor [BF] ≥ 5.0) between rs373863828 and the overall phenotype panel (8.81), weight (8.30), and BMI (6.42). In the Aotearoa New Zealand cohort, we observed suggestive associations (1.5 < log10 BF < 5) between rs373863828 and the overall phenotype panel (4.60), weight (3.27), and BMI (1.80). In the combined cohort, we observed concordant signals with larger log10 BFs. In the Samoa-specific expanded phenotype analyses, we also observed significant associations between rs373863828 and fat mass (5.65), abdominal circumference (5.34), and hip circumference (5.09). Bayesian networks provided evidence for a direct association of rs373863828 with weight and indirect associations with height and BMI., (© 2022 Wiley Periodicals LLC.)- Published
- 2023
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33. The protective effect of rs373863828 on type 2 diabetes does not operate through a body composition pathway in adult Samoans.
- Author
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Hawley NL, Duckham RL, Carlson JC, Naseri T, Reupena MS, Lameko V, Pomer A, Wetzel A, Selu M, Lupematisila V, Unasa F, Vesi L, Fatu T, Unasa S, Faasalele-Savusa K, Rivara AC, Russell E, Delany JP, Viali S, Kershaw EE, Minster RL, Weeks DE, and McGarvey ST
- Subjects
- Adult, Female, Humans, Male, Absorptiometry, Photon, Body Composition genetics, Body Mass Index, Glucose, Native Hawaiian or Other Pacific Islander, Obesity genetics, Diabetes Mellitus, Type 2 genetics
- Abstract
Objective: The aim of this study was to understand whether the paradoxical association of missense variant rs373863828 in CREB3 regulatory factor (CREBRF) with higher BMI but lower odds of diabetes is explained by either metabolically favorable body fat distribution or greater fat-free mass., Methods: This study explored the association of the minor allele with dual-energy x-ray absorptiometry-derived body composition in n = 421 Samoans and used path analysis to examine the mediating role of fat and fat-free mass on the relationship between rs373863828 and fasting glucose., Results: Among females, the rs373863828 minor A allele was associated with greater BMI. There was no association of genotype with percent body fat, visceral adiposity, or fat distribution in either sex. In both females and males, lean mass was greater with each A allele: 2.16 kg/copy (p = 0.0001) and 1.73 kg/copy (p = 0.02), respectively. Path analysis showed a direct negative effect of rs373863828 genotype on fasting glucose (p = 0.004) consistent with previous findings, but also an indirect positive effect on fasting glucose operating through fat-free mass (p = 0.027)., Conclusions: The protective effect of rs373863828 in CREBRF, common among Pacific Islanders, on type 2 diabetes does not operate through body composition. Rather, the variant's effects on body size/composition and fasting glucose likely operate via different, tissue-specific mechanisms., (© 2022 The Obesity Society.)
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- 2022
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34. Correlates of daytime sleepiness and insomnia among adults in Samoa.
- Author
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Heinsberg LW, Carlson JC, Pomer A, Cade BE, Naseri T, Reupena MS, Weeks DE, McGarvey ST, Redline S, and Hawley NL
- Abstract
Objective: To describe daytime sleepiness and insomnia among adults in Samoa and identify modifiable factors associated with these measures., Design/setting: Cross-sectional analysis of data from the Soifua Manuia ("Good Health") study ( n = 519, 55.1% female); Upolu island, Samoa., Methods: Daytime sleepiness and insomnia were assessed with the Epworth Sleepiness Scale (ESS) and the Women's Health Initiative Insomnia Rating Scale (WHIIRS), respectively. Detailed physical, sociodemographic, and behavioral factors were collected. Sleep measures were characterized using multiple linear regression with backwards elimination and a bootstrap stability investigation., Results: Excessive daytime sleepiness (ESS>10) and insomnia (WHIIRS>10) were reported by 20% and 6.3% of the sample, respectively. ESS scores were higher in individuals reporting more physical activity (Estimate=1.88; 95% CI=1.12 to 2.75), higher material wealth (0.18; 0.09 to 0.28), and asthma (2.85; 1.25 to 4.51). ESS scores were lower in individuals residing in periurban versus urban regions (-1.43; -2.39 to -0.41), reporting no work versus day shift work (-2.26; -3.07 to -1.41), and reporting greater perceived stress (-0.14; -0.23 to -0.06). WHIIRS scores were lower in individuals reporting "other" shift work (split/irregular/on-call/rotating) versus day shift work (-1.96; -2.89 to -1.14) and those who perceived their village's wealth to be poor/average versus wealthy (-0.94; -1.50 to -0.34)., Conclusions: Participants had a generally higher prevalence of excessive daytime sleepiness, but lower prevalence of insomnia, compared with individuals from high-income countries. Factors associated with sleep health differed compared with prior studies, emphasizing potential cultural/environmental differences and the need for targeted interventions to improve sleep health in this setting.
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- 2022
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35. Rare Variants in Genes Encoding Subunits of the Epithelial Na + Channel Are Associated With Blood Pressure and Kidney Function.
- Author
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Blobner BM, Kirabo A, Kashlan OB, Sheng S, Arnett DK, Becker LC, Boerwinkle E, Carlson JC, Gao Y, Gibbs RA, He J, Irvin MR, Kardia SLR, Kelly TN, Kooperberg C, McGarvey ST, Menon VK, Montasser ME, Naseri T, Redline S, Reiner AP, Reupena MS, Smith JA, Sun X, Vaidya D, Viaud-Martinez KA, Weeks DE, Yanek LR, Zhu X, Minster RL, and Kleyman TR
- Subjects
- Humans, Blood Pressure genetics, Phenotype, Kidney, Epithelial Sodium Channels genetics, Sodium
- Abstract
Background: The epithelial Na
+ channel (ENaC) is intrinsically linked to fluid volume homeostasis and blood pressure. Specific rare mutations in SCNN1A , SCNN1B , and SCNN1G , genes encoding the α, β, and γ subunits of ENaC, respectively, are associated with extreme blood pressure phenotypes. No associations between blood pressure and SCNN1D , which encodes the δ subunit of ENaC, have been reported. A small number of sequence variants in ENaC subunits have been reported to affect functional transport in vitro or blood pressure. The effects of the vast majority of rare and low-frequency ENaC variants on blood pressure are not known., Methods: We explored the association of low frequency and rare variants in the genes encoding ENaC subunits, with systolic blood pressure, diastolic blood pressure, mean arterial pressure, and pulse pressure. Using whole-genome sequencing data from 14 studies participating in the Trans-Omics in Precision Medicine Whole-Genome Sequencing Program, and sequence kernel association tests., Results: We found that variants in SCNN1A and SCNN1B were associated with diastolic blood pressure and mean arterial pressure ( P <0.00625). Although SCNN1D is poorly expressed in human kidney tissue, SCNN1D variants were associated with systolic blood pressure, diastolic blood pressure, mean arterial pressure, and pulse pressure ( P <0.00625). ENaC variants in 2 of the 4 subunits ( SCNN1B and SCNN1D ) were also associated with estimated glomerular filtration rate ( P <0.00625), but not with stroke., Conclusions: Our results suggest that variants in extrarenal ENaCs, in addition to ENaCs expressed in kidneys, influence blood pressure and kidney function.- Published
- 2022
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36. A stop-gain variant in BTNL9 is associated with atherogenic lipid profiles.
- Author
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Carlson JC, Krishnan M, Rosenthal SL, Russell EM, Zhang JZ, Hawley NL, Moors J, Cheng H, Dalbeth N, de Zoysa JR, Watson H, Qasim M, Murphy R, Naseri T, Reupena MS, Viali S, Stamp LK, Tuitele J, Kershaw EE, Deka R, McGarvey ST, Merriman TR, Weeks DE, and Minster RL
- Subjects
- Adult, Humans, Cholesterol, HDL genetics, Triglycerides genetics, Pacific Island People genetics, Atherosclerosis genetics, Butyrophilins genetics, Dyslipidemias genetics
- Abstract
Current understanding of lipid genetics has come mainly from studies in European-ancestry populations; limited effort has focused on Polynesian populations, whose unique population history and high prevalence of dyslipidemia may provide insight into the biological foundations of variation in lipid levels. Here, we performed an association study to fine map a suggestive association on 5q35 with high-density lipoprotein cholesterol (HDL-C) seen in Micronesian and Polynesian populations. Fine-mapping analyses in a cohort of 2,851 Samoan adults highlighted an association between a stop-gain variant (rs200884524; c.652C>T, p.R218∗; posterior probability = 0.9987) in BTNL9 and both lower HDL-C and greater triglycerides (TGs). Meta-analysis across this and several other cohorts of Polynesian ancestry from Samoa, American Samoa, and Aotearoa New Zealand confirmed the presence of this association (β
HDL-C = -1.60 mg/dL, pHDL-C = 7.63 × 10-10 ; βTG = 12.00 mg/dL, pTG = 3.82 × 10-7 ). While this variant appears to be Polynesian specific, there is also evidence of association from other multiancestry analyses in this region. This work provides evidence of a previously unexplored contributor to the genetic architecture of lipid levels and underscores the importance of genetic analyses in understudied populations., Competing Interests: The authors declare no competing interests., (© 2022 The Authors.)- Published
- 2022
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37. Availability of stock epinephrine in schools is needed to address health disparities in anaphylaxis.
- Author
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Vetter MK, Newell AC, Huntwork MP, and Carlson JC
- Abstract
Significant health disparities exist in the diagnosis, prevalence, and management of anaphylaxis. This case acted as a community-level sentinel event for advocacy efforts to place stock epinephrine into schools throughout the greater New Orleans area., (© 2022 The Author(s).)
- Published
- 2022
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38. Insights From a Large-Scale Whole-Genome Sequencing Study of Systolic Blood Pressure, Diastolic Blood Pressure, and Hypertension.
- Author
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Kelly TN, Sun X, He KY, Brown MR, Taliun SAG, Hellwege JN, Irvin MR, Mi X, Brody JA, Franceschini N, Guo X, Hwang SJ, de Vries PS, Gao Y, Moscati A, Nadkarni GN, Yanek LR, Elfassy T, Smith JA, Chung RH, Beitelshees AL, Patki A, Aslibekyan S, Blobner BM, Peralta JM, Assimes TL, Palmas WR, Liu C, Bress AP, Huang Z, Becker LC, Hwa CM, O'Connell JR, Carlson JC, Warren HR, Das S, Giri A, Martin LW, Craig Johnson W, Fox ER, Bottinger EP, Razavi AC, Vaidya D, Chuang LM, Chang YC, Naseri T, Jain D, Kang HM, Hung AM, Srinivasasainagendra V, Snively BM, Gu D, Montasser ME, Reupena MS, Heavner BD, LeFaive J, Hixson JE, Rice KM, Wang FF, Nielsen JB, Huang J, Khan AT, Zhou W, Nierenberg JL, Laurie CC, Armstrong ND, Shi M, Pan Y, Stilp AM, Emery L, Wong Q, Hawley NL, Minster RL, Curran JE, Munroe PB, Weeks DE, North KE, Tracy RP, Kenny EE, Shimbo D, Chakravarti A, Rich SS, Reiner AP, Blangero J, Redline S, Mitchell BD, Rao DC, Ida Chen YD, Kardia SLR, Kaplan RC, Mathias RA, He J, Psaty BM, Fornage M, Loos RJF, Correa A, Boerwinkle E, Rotter JI, Kooperberg C, Edwards TL, Abecasis GR, Zhu X, Levy D, Arnett DK, and Morrison AC
- Subjects
- Blood Pressure genetics, Genome-Wide Association Study, Genomics, Humans, Polymorphism, Single Nucleotide, Precision Medicine, Hypertension genetics
- Abstract
Background: The availability of whole-genome sequencing data in large studies has enabled the assessment of coding and noncoding variants across the allele frequency spectrum for their associations with blood pressure., Methods: We conducted a multiancestry whole-genome sequencing analysis of blood pressure among 51 456 Trans-Omics for Precision Medicine and Centers for Common Disease Genomics program participants (stage-1). Stage-2 analyses leveraged array data from UK Biobank (N=383 145), Million Veteran Program (N=318 891), and Reasons for Geographic and Racial Differences in Stroke (N=10 643) participants, along with whole-exome sequencing data from UK Biobank (N=199 631) participants., Results: Two blood pressure signals achieved genome-wide significance in meta-analyses of stage-1 and stage-2 single variant findings ( P <5×10
-8 ). Among them, a rare intergenic variant at novel locus, LOC100506274 , was associated with lower systolic blood pressure in stage-1 (beta [SE]=-32.6 [6.0]; P =4.99×10-8 ) but not stage-2 analysis ( P =0.11). Furthermore, a novel common variant at the known INSR locus was suggestively associated with diastolic blood pressure in stage-1 (beta [SE]=-0.36 [0.07]; P =4.18×10-7 ) and attained genome-wide significance in stage-2 (beta [SE]=-0.29 [0.03]; P =7.28×10-23 ). Nineteen additional signals suggestively associated with blood pressure in meta-analysis of single and aggregate rare variant findings ( P <1×10-6 and P <1×10-4 , respectively)., Discussion: We report one promising but unconfirmed rare variant for blood pressure and, more importantly, contribute insights for future blood pressure sequencing studies. Our findings suggest promise of aggregate analyses to complement single variant analysis strategies and the need for larger, diverse samples, and family studies to enable robust rare variant identification.- Published
- 2022
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39. Implementation of Stock Epinephrine in Chartered Versus Unchartered Public-School Districts.
- Author
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Neupert KB, Huntwork MP, Udemgba C, and Carlson JC
- Subjects
- Child, Epinephrine therapeutic use, Humans, School Health Services, Schools, Students, Anaphylaxis drug therapy
- Abstract
Background: Access to unassigned epinephrine is critical for schools to treat anaphylaxis. Low socioeconomic status is associated with decreased access to epinephrine in the school setting. In and around New Orleans, physicians partner with schools to assist with stocking unassigned epinephrine autoinjectors (EAIs). New Orleans' decentralized public charter school district makes widespread adoption challenging., Methods: Physicians partnered with New Orleans decentralized public charter schools, as well as neighboring centralized public school districts, to perform training on recognizing and treating anaphylaxis, assist with the adoption of school policy for stock epinephrine, and aid with obtaining stock EIAs free-of-cost through the EpiPen4Schools® program. We used publicly available school enrollment data and our own calendar records to calculate how many children we covered with stock epinephrine per hour of physician or administrator time., Results: For centralized school districts, we cover approximately 4000 children with stock epinephrine per hour of time. For the decentralized district of New Orleans, we estimate covering only 400 children with stock epinephrine per hour of time., Conclusion: Decentralized school districts reduce educational disparities, but require more time and energy to get EAIs in place than centralized school districts do., (© 2022 The Authors. Journal of School Health published by Wiley Periodicals LLC on behalf of American School Health Association.)
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- 2022
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40. The missense variant, rs373863828, in CREBRF plays a role in longitudinal changes in body mass index in Samoans.
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Fu H, Hawley NL, Carlson JC, Russell EM, Pomer A, Cheng H, Naseri T, Reupena MS, Deka R, Choy CC, McGarvey ST, Minster RL, and Weeks DE
- Subjects
- Adult, Aged, Alleles, Body Mass Index, Cohort Studies, Female, Genotype, Humans, Male, Obesity genetics
- Abstract
Objective: A missense variant, rs373863828, in CREBRF is associated with obesity in Polynesians. We investigate whether rs373863828 and other factors are associated with body mass index (BMI) rate-of-change between 2010 and 2017-19 in Samoans., Methods: We used sex-stratified models to test whether BMI rate-of-change was associated with rs373863828, baseline BMI, age, residence, physical activity, and household asset score in a cohort study of 480 Samoan adults measured in both 2010 (mean age 43.8 years) and 2017-19., Results: Mean BMI increased from 32.1 to 33.5 kg/m
2 in males (n = 220, p = 1.3 ×10-8 ) and from 35.9 to 37.8 kg/m2 in females (n = 260, p = 1.2 ×10-13 ). In females, the A allele was associated with a higher rate-of-change (0.150 kg/m2 /year/allele, p = 1.7 ×10-4 ). Across 10-year age groups, mean BMI rate-of-change was lower in older participants. The BMI rate of change differed by genotype: it was, in females with AA genotype, approximately half that seen in GG and AG participants. In females lower baseline household asset scores were associated with a higher rate-of-change (p = 0.002)., Conclusions: In Samoans, the minor A allele of rs373863828 is associated with an increased rate-of-change in BMI in females. On average, BMI of females with the AA genotype increased 0.30 kg/m2 /year more than of those with the GG genotype., (Copyright © 2022 Asia Oceania Association for the Study of Obesity. Published by Elsevier Ltd. All rights reserved.)- Published
- 2022
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41. Disaster differentially affects underserved communities.
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Huntwork MP, Le TP, Winfrey KL, and Carlson JC
- Abstract
Patients with barriers to care, including poverty and language barriers, often live in lower-cost, disaster-prone areas. Partnering with community clinics enables allergists to reach underserved patients., (© 2022 The Author(s).)
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- 2022
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42. Genome-wide Interaction Study Implicates VGLL2 and Alcohol Exposure and PRL and Smoking in Orofacial Cleft Risk.
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Carlson JC, Shaffer JR, Deleyiannis F, Hecht JT, Wehby GL, Christensen K, Feingold E, Weinberg SM, Marazita ML, and Leslie EJ
- Abstract
Non-syndromic cleft lip with or without cleft palate (NSCL/P) is a common birth defect, affecting approximately 1 in 700 births. NSCL/P has complex etiology including several known genes and environmental factors; however, known genetic risk variants only account for a small fraction of the heritability of NSCL/P. It is commonly suggested that gene-by-environment (G×E) interactions may help explain some of the "missing" heritability of NSCL/P. We conducted a genome-wide G×E interaction study in cases and controls of European ancestry with three common maternal exposures during pregnancy: alcohol, smoking, and vitamin use using a two-stage design. After selecting 127 loci with suggestive 2df tests for gene and G x E effects, 40 loci showed significant G x E effects after correcting for multiple tests. Notable interactions included SNPs of 6q22 near VGLL2 with alcohol and 6p22.3 near PRL with smoking. These interactions could provide new insights into the etiology of CL/P and new opportunities to modify risk through behavioral changes., Competing Interests: The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest. The reviewer ZJ declared a past collaboration with several of the authors EL and MM to the handling editor., (Copyright © 2022 Carlson, Shaffer, Deleyiannis, Hecht, Wehby, Christensen, Feingold, Weinberg, Marazita and Leslie.)
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- 2022
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43. CREBRF missense variant rs373863828 has both direct and indirect effects on type 2 diabetes and fasting glucose in Polynesian peoples living in Samoa and Aotearoa New Zealand.
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Russell EM, Carlson JC, Krishnan M, Hawley NL, Sun G, Cheng H, Naseri T, Reupena MS, Viali S, Tuitele J, Major TJ, Miljkovic I, Merriman TR, Deka R, Weeks DE, McGarvey ST, and Minster RL
- Subjects
- Adult, Cross-Sectional Studies, Fasting, Glucose, Humans, New Zealand epidemiology, Samoa epidemiology, Tumor Suppressor Proteins genetics, Diabetes Mellitus, Type 2 epidemiology, Diabetes Mellitus, Type 2 genetics
- Abstract
Introduction: The minor allele of a missense variant, rs373863828, in CREBRF is associated with higher body mass index (BMI), lower fasting glucose, and lower odds of type 2 diabetes. rs373863828 is common in Pacific Island populations (minor allele frequency (MAF) 0.096-0.259) but rare in non-Pacific Island populations (MAF <0.001). We examined the cross-sectional associations between BMI and rs373863828 in type 2 diabetes and fasting glucose with a large sample of adults of Polynesian ancestries from Samoa, American Samoa, and Aotearoa New Zealand, and estimated the direct and indirect (via BMI) effects of rs373863828 on type 2 diabetes and fasting glucose., Research Design and Methods: We regressed type 2 diabetes and fasting glucose on BMI and rs373863828 stratified by obesity, regressed type 2 diabetes and fasting glucose on BMI stratified by rs373863828 genotype, and assessed the effects of rs373863828 on type 2 diabetes and fasting glucose with path analysis. The regression analyses were completed separately in four samples that were recruited during different time periods between 1990 and 2010 and then the results were meta-analyzed. All samples were pooled for the path analysis., Results: Association of BMI with type 2 diabetes and fasting glucose may be greater in those without obesity (OR=7.77, p=0.015 and β=0.213, p = 9.53×10
-5 , respectively) than in those with obesity (OR=5.01, p=1.12×10-9 and β=0.162, p = 5.63×10-6 , respectively). We did not observe evidence of differences in the association of BMI with type 2 diabetes or fasting glucose by genotype. In the path analysis, the minor allele has direct negative (lower odds of type 2 diabetes and fasting glucose) and indirect positive (higher odds of type 2 diabetes and fasting glucose) effects on type 2 diabetes risk and fasting glucose, with the indirect effects mediated through a direct positive effect of rs373863828 on BMI., Conclusions: There may be a stronger effect of BMI on fasting glucose in Polynesian individuals without obesity than in those with obesity. Carrying the rs373863828 minor allele does not decouple higher BMI from higher odds of type 2 diabetes., Competing Interests: Competing interests: None declared., (© Author(s) (or their employer(s)) 2022. Re-use permitted under CC BY-NC. No commercial re-use. See rights and permissions. Published by BMJ.)- Published
- 2022
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44. Addressing activation of WNT beta-catenin pathway in diverse landscape of endometrial carcinogenesis.
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De P, Aske JC, Dale A, Rojas Espaillat L, Starks D, and Dey N
- Abstract
The WNT-beta-catenin pathway (WP) is one of the major oncogenic pathways in solid tumors. Wnt beta-catenin pathway plays a unique role in a wide range of endometrial dysfunctions, from embryo implantation failure to severe pathogenic changes like endometriosis and endometrial cancer. Although abnormal activation of the pathway has long been known to be associated with endometrial tumorigenesis, the pathway's exact mode of involvement remains to be understood. As more evidence has been presented in favor of a crucial role of the WP in solid tumors, including endometrial cancer, anti-WP drugs are currently being tested to manage the disease. Aggressive tumor cells are nurtured by the tumor microenvironment (TME). The genetic alterations within tumor cells are the primary driving force to activate the extra-tumoral micro-environment. TME (a) provides metabolic support for the proliferation of tumor cells, (b) orchestrates immune-evasion, (c) initiates mechanistic signaling for several metastasis-associated phenotypes, and (d) supports cellular events for the development of drug resistance. To get metabolic as well as immune support from the tumor microenvironment, tumor cells cross-talk with components of the TME, most critically to the cancer-associated fibroblasts. Thus it is expected that the tumor-TME cross-talk throughout the process of tumorigenesis and metastasis is one of the characteristic features of an aggressive tumor. Here we review the WP's mechanistic involvement as a common culprit ( Un Colpevole Comune ) in endometrial tumor cells and endometrial cancer-associated fibroblast (CAF). In this review, we have attempted to discuss the activation of the WP in the genesis and progression of endometrial cancers, including endometrial tumor biology, tumor microenvironment, cancer-associated fibroblasts, and wnt-beta catenin genetic alteration. We interrogated the available literature on the various aspects of endometrial carcinogenesis leading to the pathway's activation. We examined how genetic alterations in WP directly influence tumor cell signaling to bring out different tumor cell phenotypes, and present palpable evidence to envision a role of WP inhibitors in the future management of the disease., Competing Interests: None., (AJTR Copyright © 2021.)
- Published
- 2021
45. FAT4 identified as a potential modifier of orofacial cleft laterality.
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Curtis SW, Chang D, Sun MR, Epstein MP, Murray JC, Feingold E, Beaty TH, Weinberg SM, Marazita ML, Lipinski RJ, Carlson JC, and Leslie EJ
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- Humans, Cadherins genetics, Cleft Lip epidemiology, Cleft Lip genetics, Cleft Palate genetics, Tumor Suppressor Proteins genetics
- Abstract
Orofacial clefts (OFCs) are common (1 in 700 births) congenital malformations that include a cleft lip (CL) and cleft lip and palate (CLP). These OFC subtypes are also heterogeneous themselves, with the CL occurring on the left, right, or both sides of the upper lip. Unilateral CL and CLP have a 2:1 bias towards left-sided clefts, suggesting a nonrandom process. Here, we performed a study of left- and right-sided clefts within the CL and CLP subtypes to better understand the genetic factors controlling cleft laterality. We conducted genome-wide modifier analyses by comparing cases that had right unilateral CL (RCL; N = 130), left unilateral CL (LCL; N = 216), right unilateral CLP (RCLP; N = 416), or left unilateral CLP (LCLP; N = 638), and identified a candidate region on 4q28, 400 kb downstream from FAT4, that approached genome-wide significance for LCL versus RCL (p = 8.4 × 10
-8 ). Consistent with its potential involvement as a genetic modifier of CL, we found that Fat4 exhibits a specific domain of expression in the mesenchyme of the medial nasal processes that form the median upper lip. Overall, these results suggest that the epidemiological similarities in left- to right-sided clefts in CL and CLP are not reflected in the genetic association results., (© 2021 Wiley Periodicals LLC.)- Published
- 2021
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46. Exposure to species of Vespidae in the urbanized areas of New Orleans, Louisiana.
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Carlson JC and Fox MS
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- Animals, Environmental Exposure, Humans, New Orleans, Wasps
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- 2021
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47. Best Practices for Conducting Clinical Trials With Indigenous Children in the United States.
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Shaw JL, Semmens E, Okihiro M, Lewis JL, Hirschfeld M, VanWagoner TM, Stephens L, Easa D, Ross JL, Graham N, Watson SE, Szyld EG, Dillard DA, Pyles LA, Darden PM, Carlson JC, Smith PG, McCulloh RJ, Snowden JN, Adeky SH, and Singleton R
- Subjects
- Child, Humans, Research Design, Safety, United States, Alaska Natives statistics & numerical data, Capacity Building organization & administration, Child Welfare statistics & numerical data, Clinical Trials as Topic standards, Indians, North American statistics & numerical data
- Abstract
We provide guidance for conducting clinical trials with Indigenous children in the United States. We drew on extant literature and our experience to describe 3 best practices for the ethical and effective conduct of clinical trials with Indigenous children. Case examples of pediatric research conducted with American Indian, Alaska Native, and Native Hawaiian communities are provided to illustrate these practices. Ethical and effective clinical trials with Indigenous children require early and sustained community engagement, building capacity for Indigenous research, and supporting community oversight and ownership of research. Effective engagement requires equity, trust, shared interests, and mutual benefit among partners over time. Capacity building should prioritize developing Indigenous researchers. Supporting community oversight and ownership of research means that investigators should plan for data-sharing agreements, return or destruction of data, and multiple regulatory approvals. Indigenous children must be included in clinical trials to reduce health disparities and improve health outcomes in these pediatric populations. Establishment of the Environmental Influences on Child Health Outcomes Institutional Development Award States Pediatric Clinical Trials Network (ECHO ISPCTN) in 2016 creates a unique and timely opportunity to increase Indigenous children's participation in state-of-the-art clinical trials.
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- 2021
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48. Capacity Building for a New Multicenter Network Within the ECHO IDeA States Pediatric Clinical Trials Network.
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Annett RD, Bickel S, Carlson JC, Cowan K, Cox S, Fisher MJ, Jarvis JD, Kong AS, Kosut JS, Kulbeth KR, Laptook A, McElfish PA, McNally MM, Pachter LM, Pahud BA, Pyles LA, Shaw J, Simonsen K, Snowden J, Turley CB, and Atz AM
- Abstract
Introduction: Research capacity building is a critical component of professional development for pediatrician scientists, yet this process has been elusive in the literature. The ECHO IDeA States Pediatric Clinical Trials Network (ISPCTN) seeks to implement pediatric trials across medically underserved and rural populations. A key component of achieving this objective is building pediatric research capacity, including enhancement of infrastructure and faculty development. This article presents findings from a site assessment inventory completed during the initial year of the ISPCTN. Methods: An assessment inventory was developed for surveying ISPCTN sites. The inventory captured site-level activities designed to increase clinical trial research capacity for pediatrician scientists and team members. The inventory findings were utilized by the ISPCTN Data Coordinating and Operations Center to construct training modules covering 3 broad domains: Faculty/coordinator development; Infrastructure; Trials/Research concept development. Results: Key lessons learned reveal substantial participation in the training modules, the importance of an inventory to guide the development of trainings, and recognizing local barriers to clinical trials research. Conclusions: Research networks that seek to implement successfully completed trials need to build capacity across and within the sites engaged. Our findings indicate that building research capacity is a multi-faceted endeavor, but likely necessary for sustainability of a unique network addressing high impact pediatric health problems. The ISPCTN emphasis on building and enhancing site capacity, including pediatrician scientists and team members, is critical to successful trial implementation/completion and the production of findings that enhance the lives of children and families., Competing Interests: The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest., (Copyright © 2021 Annett, Bickel, Carlson, Cowan, Cox, Fisher, Jarvis, Kong, Kosut, Kulbeth, Laptook, McElfish, McNally, Pachter, Pahud, Pyles, Shaw, Simonsen, Snowden, Turley and Atz.)
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- 2021
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49. Identification of diverse tumor endothelial cell populations in malignant glioma.
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Carlson JC, Cantu Gutierrez M, Lozzi B, Huang-Hobbs E, Turner WD, Tepe B, Zhang Y, Herman AM, Rao G, Creighton CJ, Wythe JD, and Deneen B
- Subjects
- Endothelial Cells, Endothelium, Humans, Neovascularization, Pathologic, Tumor Microenvironment, Brain Neoplasms genetics, Glioma genetics
- Abstract
Background: Glioblastoma is the most common and aggressive type of primary brain tumor, as most patients succumb to the disease less than two years after diagnosis. Critically, studies demonstrate that glioma recruits surrounding blood vessels, while some work suggests that tumor stem cells themselves directly differentiate into endothelial cells, yet the molecular and cellular dynamics of the endothelium in glioma are poorly characterized. The goal of this study was to establish molecular and morphological benchmarks for tumor associated vessels (TAVs) and tumor derived endothelial cells (TDECs) during glioblastoma progression., Methods: Using In-Utero Electroporation and CRISPR/Cas9 genome engineering to generate a native, immunocompetent mouse model of glioma, we characterized vascular-tumor dynamics in three dimensions during tumor progression. We employed bulk and single-cell RNA-Sequencing to elucidate the relationship between TAVs and TDECs. We confirmed our findings in a patient derived orthotopic xenograft (PDOX) model., Results: Using a mouse model of glioma, we identified progressive alteration of vessel function and morphogenesis over time. We also showed in our mouse model that TDECs are a rare subpopulation that contributes to vessels within the tumor, albeit to a limited degree. Furthermore, transcriptional profiling demonstrates that both TAVs and TDECs are molecularly distinct, and both populations feature extensive molecular heterogeneity. Finally, the distinct molecular signatures of these heterogeneous populations are also present in human glioma., Conclusions: Our findings show extensive endothelial heterogeneity within the tumor and tumor microenvironment and provide insights into the diverse cellular and molecular mechanisms that drive glioma vascularization and angiogenesis during tumorigenesis., (© The Author(s) 2020. Published by Oxford University Press on behalf of the Society for Neuro-Oncology. All rights reserved. For permissions, please e-mail: journals.permissions@oup.com.)
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- 2021
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50. Unconventional Care at a Convention Center: An Overview of Patient Focused Care at a COVID-19 Alternative Care Site in New Orleans.
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Maslanka M, Carlson JC, Gershanik E, Turang Y, Hurwitz J, Warren M, and Kanter J
- Abstract
In March 2020, the State of Louisiana opened an alternative care site at the New Orleans Convention Center, known as the Medical Monitoring Station (MMS). The facility was designed, constructed, and staffed to serve a population with basic medical needs as they recovered from COVID-19. As the MMS prepared to open, local hospitals indicated a greater need for assistance with patients requiring a higher acuity of care and populations unable to be discharged due to infection risks. In response to this, the capabilities of the facility were altered to accommodate primarily elderly patients, with significant comorbidities, requiring extensive care. This manuscript presents the demographics of the first 250 patients seen at the MMS, and describes the most critical policies/protocols, interventions, and resources that proved successful in adjusting to effectively serve its population.
- Published
- 2021
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