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Aye T, Boney CM, Orr CJ, Leonard MB, Leslie LK, Allen DB. Child Health Needs and the Pediatric Endocrinology Workforce: 2020-2040. Pediatrics 2024; 153:e2023063678J. [PMID: 38300000 DOI: 10.1542/peds.2023-063678j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 11/21/2023] [Indexed: 02/02/2024] Open
Abstract
The pediatric endocrinology (PE) workforce in the United States is struggling to sustain an adequate, let alone optimal, workforce capacity. This article, one of a series of articles in a supplement to Pediatrics, focuses on the pediatric subspecialty workforce and furthers previous evaluations of the US PE workforce to model the current and future clinical PE workforce and its geographic distribution. The article first discusses the children presenting to PE care teams, reviews the current state of the PE subspecialty workforce, and presents projected headcount and clinical workforce equivalents at the national, census region, and census division level on the basis of a subspecialty workforce supply model through 2040. It concludes by discussing the educational and training, clinical practice, policy, and future workforce research implications of the data presented. Data presented in this article are available from the American Board of Pediatrics, the National Resident Matching Program, and the subspecialty workforce supply model. Aging, part-time appointments, and unbalanced geographic distribution of providers diminish the PE workforce capacity. In addition, limited exposure, financial concerns, and lifestyle perceptions may impact trainees. Additional workforce challenges are the subspecialty's increasingly complex cases and breadth of conditions treated, reliance on international medical graduates to fill fellowship slots, and high relative proportion of research careers. The recent limitations on pediatric endocrinologists providing gender-affirming care may also impact the geographic distribution of the subspecialty's workforce. Deliberate actions need to be taken now to continue serving the needs of children.
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Affiliation(s)
- Tandy Aye
- Division of Pediatric Endocrinology
- Stanford University School of Medicine, Stanford, California
| | - Charlotte M Boney
- Division of Pediatric Endocrinology, University of Massachusetts Chan Medical School-Baystate, Springfield, Massachusetts
| | - Colin J Orr
- Division of General Pediatrics and Adolescent Medicine, University of North Carolina School of Medicine, Chapel Hill, North Carolina
- Cecil G. Sheps Center for Health Services Research, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina
| | - Mary B Leonard
- Stanford University School of Medicine, Stanford, California
| | | | - David B Allen
- Division of Pediatric Endocrinology and Diabetes, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin
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Foland-Ross LC, Ghasemi E, Lozano Wun V, Aye T, Kowal K, Ross J, Reiss AL. Executive Dysfunction in Klinefelter Syndrome: Associations With Brain Activation and Testicular Failure. J Clin Endocrinol Metab 2023; 109:e88-e95. [PMID: 37595261 PMCID: PMC10735320 DOI: 10.1210/clinem/dgad487] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/17/2023] [Revised: 08/09/2023] [Accepted: 08/15/2023] [Indexed: 08/20/2023]
Abstract
CONTEXT Executive dysfunction is a well-recognized component of the cognitive phenotype of Klinefelter syndrome (KS), yet the neural basis of KS-associated cognitive weaknesses, and their association with testicular failure is unknown. OBJECTIVE We investigated executive function, brain activation, and pubertal development in adolescents with and without KS. METHODS Forty-three adolescents with KS (mean age 12.3 ± 2.3 years) and 41 typically developing boys (mean age 11.9 ± 1.8 years) underwent pubertal evaluation, behavioral assessment, and completed functional magnetic resonance imaging (fMRI) as they performed an executive function task, the go/no-go task. Group differences in activation were examined. Associations among activation, executive function, and pubertal development measures were tested in secondary analyses. RESULTS Boys with KS exhibited reduced executive function, as well as lower activation in brain regions subserving executive function, including the inferior frontal gyrus, anterior insula, dorsal anterior cingulate cortex, and caudate nucleus. Secondary analyses indicated that the magnitude of activation differences in boys with KS was associated with severity of pubertal developmental delay, as indexed by lower testosterone (t(36) = 2.285; P = .028) and lower testes volume (t(36) = 2.238; P = .031). Greater parent-reported attention difficulties were additionally associated with lower testicular volume (t(36) = -2.028; P = .050). CONCLUSION These findings indicate a neural basis for executive dysfunction in KS and suggest alterations in pubertal development may contribute to increased severity of this cognitive weakness. Future studies that examine whether these patterns change with testosterone replacement therapy are warranted.
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Affiliation(s)
- Lara C Foland-Ross
- Center for Interdisciplinary Brain Sciences Research, Department of Psychiatry and Behavioral Sciences, Stanford University School of Medicine, Stanford, CA 94304, USA
| | - Elnaz Ghasemi
- Center for Interdisciplinary Brain Sciences Research, Department of Psychiatry and Behavioral Sciences, Stanford University School of Medicine, Stanford, CA 94304, USA
| | - Vanessa Lozano Wun
- Department of Psychology, University of Minnesota, Minneapolis, MN 55455, USA
| | - Tandy Aye
- Department of Pediatrics, Stanford University School of Medicine, Stanford, CA 93405, USA
| | - Karen Kowal
- Department of Pediatrics, Nemours Children's Hospital Delaware, Wilmington, DE 19803, USA
- Department of Pediatrics, Thomas Jefferson University, Philadelphia, PA 19107, USA
| | - Judith Ross
- Department of Pediatrics, Nemours Children's Hospital Delaware, Wilmington, DE 19803, USA
- Department of Pediatrics, Thomas Jefferson University, Philadelphia, PA 19107, USA
| | - Allan L Reiss
- Center for Interdisciplinary Brain Sciences Research, Department of Psychiatry and Behavioral Sciences, Stanford University School of Medicine, Stanford, CA 94304, USA
- Department of Pediatrics, Stanford University School of Medicine, Stanford, CA 93405, USA
- Department of Radiology, Stanford University School of Medicine, Stanford, CA 94304, USA
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Kahn NF, Sequeira GM, Reyes V, Garrison MM, Orlich F, Christakis DA, Aye T, Conard LAE, Dowshen N, Kazak AE, Nahata L, Nokoff NJ, Voss RV, Richardson LP. Mental Health of Youth With Autism Spectrum Disorder and Gender Dysphoria. Pediatrics 2023; 152:e2023063289. [PMID: 37909059 DOI: 10.1542/peds.2023-063289] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 08/29/2023] [Indexed: 11/02/2023] Open
Abstract
BACKGROUND AND OBJECTIVES Youth with either autism spectrum disorder (ASD) or gender dysphoria (GD) alone have also been shown to be at greater risk for mental health (MH) concerns; however, very little research has considered how cooccurring ASD and GD may exacerbate MH concerns. The purpose of this study was to examine associations between ASD, GD, and MH diagnoses (anxiety, depression, eating disorder, suicidality, and self-harm) among US adolescent populations. METHODS This is a secondary analysis of a large administrative dataset formed by 8 pediatric health system members of the PEDSnet learning health system network. Analyses included descriptive statistics and adjusted mixed logistic regression models testing for associations between combinations of ASD and GD diagnoses and MH diagnoses as recorded in the patient's electronic medical record. RESULTS Based on data from 919 898 patients aged 9 to 18 years, adjusted mixed logistic regression indicated significantly greater odds of each MH diagnosis among those with ASD alone, GD alone, and cooccurring ASD/GD diagnoses compared with those with neither diagnosis. Youth with cooccurring ASD/GD were at significantly greater risk of also having anxiety (average predicted probability, 0.75; 95% confidence interval, 0.68-0.81) or depression diagnoses (average predicted probability, 0.33; 95% confidence interval, 0.24-0.43) compared with youth with ASD alone, GD alone, or neither diagnosis. CONCLUSIONS Youth with cooccurring ASD/GD are more likely to also be diagnosed with MH concerns, particularly anxiety and depression. This study highlights the need to implement developmentally appropriate, gender-affirming MH services and interventions for youth with cooccurring ASD/GD.
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Affiliation(s)
- Nicole F Kahn
- Seattle Children's Research Institute, Seattle, Washington
- University of Washington, Seattle, Washington
| | - Gina M Sequeira
- Seattle Children's Research Institute, Seattle, Washington
- University of Washington, Seattle, Washington
| | | | - Michelle M Garrison
- Seattle Children's Research Institute, Seattle, Washington
- University of Washington, Seattle, Washington
| | - Felice Orlich
- Seattle Children's Research Institute, Seattle, Washington
- University of Washington, Seattle, Washington
| | - Dimitri A Christakis
- Seattle Children's Research Institute, Seattle, Washington
- University of Washington, Seattle, Washington
| | - Tandy Aye
- Stanford School of Medicine, Stanford, California
| | | | - Nadia Dowshen
- Children's Hospital of Philadelphia, Philadelphia, Pennsylvania
| | | | | | - Natalie J Nokoff
- University of Colorado Anschutz Medical Campus, Aurora, Colorado
| | - Raina V Voss
- Ann & Robert H. Lurie Children's Hospital of Chicago, Chicago, Illinois
| | - Laura P Richardson
- Seattle Children's Research Institute, Seattle, Washington
- University of Washington, Seattle, Washington
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Mink RB, Carraccio CL, Herman BE, Weiss P, Turner DA, Stafford DEJ, McGann KA, Kesselheim J, Hsu DC, High PC, Fussell JJ, Curran ML, Chess PR, Sauer C, Pitts S, Myers AL, Mahan JD, Dammann CEL, Aye T, Schwartz A. Relationship between epa level of supervision with their associated subcompetency milestone levels in pediatric fellow assessment. BMC Med Educ 2023; 23:720. [PMID: 37789289 PMCID: PMC10548580 DOI: 10.1186/s12909-023-04689-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/15/2023] [Accepted: 09/15/2023] [Indexed: 10/05/2023]
Abstract
BACKGROUND Entrustable Professional Activities (EPA) and competencies represent components of a competency-based education framework. EPAs are assessed based on the level of supervision (LOS) necessary to perform the activity safely and effectively. The broad competencies, broken down into narrower subcompetencies, are assessed using milestones, observable behaviors of one's abilities along a developmental spectrum. Integration of the two methods, accomplished by mapping the most relevant subcompetencies to each EPA, may provide a cross check between the two forms of assessment and uncover those subcompetencies that have the greatest influence on the EPA assessment. OBJECTIVES We hypothesized that 1) there would be a strong correlation between EPA LOS ratings with the milestone levels for the subcompetencies mapped to the EPA; 2) some subcompetencies would be more critical in determining entrustment decisions than others, and 3) the correlation would be weaker if the analysis included only milestones reported to the Accreditation Council for Graduate Medical Education (ACGME). METHODS In fall 2014 and spring 2015, the Subspecialty Pediatrics Investigator Network asked Clinical Competency Committees to assign milestone levels to each trainee enrolled in a pediatric fellowship for all subcompetencies mapped to 6 Common Pediatric Subspecialty EPAs as well as provide a rating for each EPA based upon a 5-point LOS scale. RESULTS One-thousand forty fellows were assessed in fall and 1048 in spring, representing about 27% of all fellows. For each EPA and in both periods, the average milestone level was highly correlated with LOS (rho range 0.59-0.74; p < 0.001). Correlations were similar when using a weighted versus unweighted milestone score or using only the ACGME reported milestones (p > 0.05). CONCLUSIONS We found a strong relationship between milestone level and EPA LOS rating but no difference if the subcompetencies were weighted, or if only milestones reported to the ACGME were used. Our results suggest that representative behaviors needed to effectively perform the EPA, such as key subcompetencies and milestones, allow for future language adaptations while still supporting the current model of assessment. In addition, these data provide additional validity evidence for using these complementary tools in building a program of assessment.
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Affiliation(s)
- Richard B Mink
- Department of Pediatrics, David Geffen School of Medicine at UCLA and the Lundquist Institute for Biomedical Innovation at Harbor-UCLA Medical Center, 1124 West Carson Street, Torrance, CA, 90502, USA.
| | | | - Bruce E Herman
- University of Utah School of Medicine, Salt Lake, UT, USA
| | - Pnina Weiss
- Department of Pediatrics, Yale School of Medicine, New Haven, CT, USA
| | | | - Diane E J Stafford
- Division of Endocrinology, Department of Pediatrics, Stanford University School of Medicine, Palo Alto, CA, USA
| | - Kathleen A McGann
- Department of Pediatrics, Duke University Medical Center, Durham, NC, USA
| | - Jennifer Kesselheim
- Dana-Farber/Boston Children's Cancer and Blood Disorders Center, Boston, MA, USA
| | | | - Pamela C High
- Alpert Medical School of Brown University, Providence, RI, USA
- Developmental-Behavioral Pediatrics, Hasbro Children's Hospital, Providence, RI, USA
| | - Jill J Fussell
- University of Arkansas for Medical Sciences and Arkansas Children's Hospital, Little Rock, AR, USA
| | - Megan L Curran
- Department of Pediatrics, University of Colorado School of Medicine, Aurora, CO, USA
| | | | - Cary Sauer
- Department of Pediatrics, Emory University School of Medicine and Children's Healthcare of Atlanta, Atlanta, GA, USA
| | - Sarah Pitts
- Division of Adolescent/Young Adult Medicine, Boston Children's Hospital, Boston, MA, USA
| | - Angela L Myers
- Center for Wellbeing, Children's Mercy Hospital and University of Missouri-Kansas City School of Medicine, Kansas City, MO, USA
| | - John D Mahan
- Department of Pediatrics, Nationwide Children's Hospital and The Ohio State University College of Medicine, Columbus, OH, USA
| | | | - Tandy Aye
- Division of Endocrinology, Department of Pediatrics, Stanford University School of Medicine, Palo Alto, CA, USA
| | - Alan Schwartz
- University of Illinois College of Medicine at Chicago, Chicago, IL, USA
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Kahn NF, Sequeira GM, Garrison MM, Orlich F, Christakis DA, Aye T, Conard LAE, Dowshen N, Kazak AE, Nahata L, Nokoff NJ, Voss RV, Richardson LP. Co-occurring Autism Spectrum Disorder and Gender Dysphoria in Adolescents. Pediatrics 2023; 152:e2023061363. [PMID: 37395084 DOI: 10.1542/peds.2023-061363] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 03/14/2023] [Indexed: 07/04/2023] Open
Abstract
BACKGROUND AND OBJECTIVES Autism spectrum disorder (ASD) and gender dysphoria (GD) frequently cooccur. However, existing research has primarily used smaller samples, limiting generalizability and the ability to assess further demographic variation. The purpose of this study was to (1) examine the prevalence of cooccurring ASD and GD diagnoses among US adolescents aged 9 to 18 and (2) identify demographic differences in the prevalence of cooccurring ASD and GD diagnoses. METHODS This secondary analysis used data from the PEDSnet learning health system network of 8 pediatric hospital institutions. Analyses included descriptive statistics and adjusted mixed logistic regression testing for associations between ASD and GD diagnoses and interactions between ASD diagnosis and demographic characteristics in the association with GD diagnosis. RESULTS Among 919 898 patients, GD diagnosis was more prevalent among youth with an ASD diagnosis compared with youth without an ASD diagnosis (1.1% vs 0.6%), and adjusted regression revealed significantly greater odds of GD diagnosis among youth with an ASD diagnosis (adjusted odds ratio = 3.00, 95% confidence interval: 2.72-3.31). Cooccurring ASD/GD diagnoses were more prevalent among youth whose electronic medical record-reported sex was female and those using private insurance, and less prevalent among youth of color, particularly Black and Asian youth. CONCLUSIONS Results indicate that youth whose electronic medical record-reported sex was female and those using private insurance are more likely, and youth of color are less likely, to have cooccurring ASD/GD diagnoses. This represents an important step toward building services and supports that reduce disparities in access to care and improve outcomes for youth with cooccurring ASD/GD and their families.
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Affiliation(s)
- Nicole F Kahn
- Seattle Children's Research Institute, Seattle, Washington
- University of Washington, Seattle, Washington
| | - Gina M Sequeira
- Seattle Children's Research Institute, Seattle, Washington
- University of Washington, Seattle, Washington
| | - Michelle M Garrison
- Seattle Children's Research Institute, Seattle, Washington
- University of Washington, Seattle, Washington
| | - Felice Orlich
- Seattle Children's Research Institute, Seattle, Washington
- University of Washington, Seattle, Washington
| | - Dimitri A Christakis
- Seattle Children's Research Institute, Seattle, Washington
- University of Washington, Seattle, Washington
| | - Tandy Aye
- Stanford School of Medicine, Stanford, California
| | | | - Nadia Dowshen
- Children's Hospital of Philadelphia, Philadelphia, Pennsylvania
| | | | | | - Natalie J Nokoff
- University of Colorado Anschutz Medical Campus, Aurora, Colorado
| | - Raina V Voss
- Ann & Robert H. Lurie Children's Hospital of Chicago, Chicago, Illinois
| | - Laura P Richardson
- Seattle Children's Research Institute, Seattle, Washington
- University of Washington, Seattle, Washington
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Sandberg ES, Baines HK, Aye T, Harris RM, Hart-Unger S, Lopez X, Nikita ME, Nokoff NJ, Persky R, Roberts SA. A self-guided curriculum on endocrinology standard of care for gender diverse youth, including ethical considerations. Endocr Metab Sci 2023; 11:100131. [PMID: 37501755 PMCID: PMC10373477 DOI: 10.1016/j.endmts.2023.100131] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/29/2023] Open
Abstract
Objective While the field of pediatric endocrinology, and the American Board of Pediatrics, continues expanding training to include gender-affirming care, many pediatric endocrinology fellowship programs do not have formal curriculum for this patient population. Members of the Pediatric Endocrine Society (PES) that have a special interest in transgender health designed a curriculum based on Endocrine Society practice guidelines to expand the knowledge of gender affirming care for medical trainees' and faculty. Methods PES members designed a 5-part self-guided educational module series with embedded knowledge questions. Uniquely, medical ethical reflections were included within each module. Participants completed baseline demographic and baseline and follow-up knowledge surveys. Results Most participants were pediatric endocrinology fellows and 44 % percent (n = 21) completed all study components, including the follow up knowledge survey. Knowledge question data analysis demonstrated knowledge gained in medical management of pubertal youth and surgical interventions. Conclusion This is the first medical education curriculum in gender-affirming care created by pediatric endocrinologists grounded in the Endocrine Society practice guidelines. This study demonstrates medical knowledge gained in caring for gender diverse youth and is the first to incorporate ethical considerations for this patient population. While initially designed for pediatric endocrinology trainees and faculty, this curriculum may be of great utility for any provider interested in caring for gender diverse youth.
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Affiliation(s)
- Elizabeth S. Sandberg
- Department of Pediatrics, University of Michigan, Ann Arbor, MI, United States of America
| | - Hayley K. Baines
- Department of Pediatrics, Oregon Health & Science University, Portland, OR, United States of America
| | - Tandy Aye
- Department of Pediatrics, Stanford University School of Medicine, Stanford, CA, United States of America
| | - Rebecca M. Harris
- Department of Pediatrics, Harvard Medical School, Boston, MA, United States of America
| | - Sarah Hart-Unger
- Department of Pediatrics, Memorial Healthcare System, Hollywood, FL, United States of America
| | - Ximena Lopez
- Department of Pediatrics, University of Texas Southwestern Medical Center, Dallas, TX, United States of America
| | - Maria Eleni Nikita
- Department of Pediatrics, University of Maryland Medical Center, Baltimore, MD, United States of America
| | - Natalie J. Nokoff
- Department of Pediatrics, University of Colorado Anschutz Medical Campus, Aurora, CO, United States of America
| | - Rebecca Persky
- Department of Pediatrics, George Washington University, Washington, DC, United States of America
| | - Stephanie A. Roberts
- Department of Pediatrics, Harvard Medical School, Boston, MA, United States of America
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Ni J, Chi C, Aye T. Review of Implant Gonadotrophin-Releasing Hormone Agonist Use: Experience in a Single Academic Center. Horm Res Paediatr 2023; 96:523-526. [PMID: 36791687 PMCID: PMC10614268 DOI: 10.1159/000529733] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/09/2022] [Accepted: 01/31/2023] [Indexed: 02/17/2023] Open
Abstract
BACKGROUND Gonadotrophin-releasing hormone agonists (GnRHas) are used for puberty suppression in central precocious puberty (CPP) and gender dysphoria (GD). Guidelines on biochemical monitoring are not defined. OBJECTIVES The aim of this study was to evaluate the utility of biochemical monitoring of GnRHa therapy in patients with CPP or GD. METHODS This is a retrospective chart review of patients 18 years or younger who received GnRHa therapy from January 1, 2018, to March 20, 2021. RESULTS A total of 103 patients were evaluated, 43 with CPP and 60 with GD. Using thresholds of basal luteinizing hormone (LH) <2 IU/L and stimulated LH <4 IU/L, biochemical pubertal suppression occurred in all but 2 patients. Basal LH frequently remained above prepubertal range. CONCLUSIONS Laboratory assessment for puberty suppression on GnRHa therapy may be unnecessary in CPP and GD patients monitored with physical exams.
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Affiliation(s)
- Jennifer Ni
- Division of Pediatric Endocrinology and Diabetes, Stanford University, Stanford, California, USA
| | - Carolyn Chi
- Division of Pediatric Endocrinology and Diabetes, Stanford University, Stanford, California, USA
| | - Tandy Aye
- Division of Pediatric Endocrinology and Diabetes, Stanford University, Stanford, California, USA
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Reiss AL, Jo B, Arbelaez AM, Tsalikian E, Buckingham B, Weinzimer SA, Fox LA, Cato A, White NH, Tansey M, Aye T, Tamborlane W, Englert K, Lum J, Mazaika P, Foland-Ross L, Marzelli M, Mauras N. A Pilot randomized trial to examine effects of a hybrid closed-loop insulin delivery system on neurodevelopmental and cognitive outcomes in adolescents with type 1 diabetes. Nat Commun 2022; 13:4940. [PMID: 36042217 PMCID: PMC9427757 DOI: 10.1038/s41467-022-32289-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2022] [Accepted: 07/26/2022] [Indexed: 12/23/2022] Open
Abstract
Type 1 diabetes (T1D) is associated with lower scores on tests of cognitive and neuropsychological function and alterations in brain structure and function in children. This proof-of-concept pilot study (ClinicalTrials.gov Identifier NCT03428932) examined whether MRI-derived indices of brain development and function and standardized IQ scores in adolescents with T1D could be improved with better diabetes control using a hybrid closed-loop insulin delivery system. Eligibility criteria for participation in the study included age between 14 and 17 years and a diagnosis of T1D before 8 years of age. Randomization to either a hybrid closed-loop or standard diabetes care group was performed after pre-qualification, consent, enrollment, and collection of medical background information. Of 46 participants assessed for eligibility, 44 met criteria and were randomized. Two randomized participants failed to complete baseline assessments and were excluded from final analyses. Participant data were collected across five academic medical centers in the United States. Research staff scoring the cognitive assessments as well as those processing imaging data were blinded to group status though participants and their families were not. Forty-two adolescents, 21 per group, underwent cognitive assessment and multi-modal brain imaging before and after the six month study duration. HbA1c and sensor glucose downloads were obtained quarterly. Primary outcomes included metrics of gray matter (total and regional volumes, cortical surface area and thickness), white matter volume, and fractional anisotropy. Estimated power to detect the predicted treatment effect was 0.83 with two-tailed, α = 0.05. Adolescents in the hybrid closed-loop group showed significantly greater improvement in several primary outcomes indicative of neurotypical development during adolescence compared to the standard care group including cortical surface area, regional gray volumes, and fractional anisotropy. The two groups were not significantly different on total gray and white matter volumes or cortical thickness. The hybrid closed loop group also showed higher Perceptual Reasoning Index IQ scores and functional brain activity more indicative of neurotypical development relative to the standard care group (both secondary outcomes). No adverse effects associated with study participation were observed. These results suggest that alterations to the developing brain in T1D might be preventable or reversible with rigorous glucose control. Long term research in this area is needed.
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Affiliation(s)
- Allan L Reiss
- Center for Interdisciplinary Brain Sciences, Department of Psychiatry and Behavioral Sciences, Stanford University, Stanford, CA, USA.
- Department of Radiology, Stanford University, Stanford, CA, USA.
- Department of Pediatrics, Stanford University, Stanford, CA, USA.
| | - Booil Jo
- Center for Interdisciplinary Brain Sciences, Department of Psychiatry and Behavioral Sciences, Stanford University, Stanford, CA, USA
| | - Ana Maria Arbelaez
- Divisions of Endocrinology & Diabetes, at Washington University in St, Louis, St, Louis, MO, USA
| | - Eva Tsalikian
- Stead Family Department of Pediatrics, Endocrinology and Diabetes, University of Iowa, Iowa City, IA, USA
| | - Bruce Buckingham
- Department of Pediatrics, Stanford University, Stanford, CA, USA
| | | | - Larry A Fox
- Division of Endocrinology, Diabetes & Metabolism, Nemours Children's Health, Jacksonville, FL, USA
| | - Allison Cato
- Division of Neurology, Nemours Children's Health, Jacksonville, FL, USA
| | - Neil H White
- Divisions of Endocrinology & Diabetes, at Washington University in St, Louis, St, Louis, MO, USA
| | - Michael Tansey
- Stead Family Department of Pediatrics, Endocrinology and Diabetes, University of Iowa, Iowa City, IA, USA
| | - Tandy Aye
- Department of Pediatrics, Stanford University, Stanford, CA, USA
| | | | - Kimberly Englert
- Division of Endocrinology, Diabetes & Metabolism, Nemours Children's Health, Jacksonville, FL, USA
| | - John Lum
- Jaeb Center for Health Research, Tampa, FL, USA
| | - Paul Mazaika
- Center for Interdisciplinary Brain Sciences, Department of Psychiatry and Behavioral Sciences, Stanford University, Stanford, CA, USA
| | - Lara Foland-Ross
- Center for Interdisciplinary Brain Sciences, Department of Psychiatry and Behavioral Sciences, Stanford University, Stanford, CA, USA
| | - Matthew Marzelli
- Center for Interdisciplinary Brain Sciences, Department of Psychiatry and Behavioral Sciences, Stanford University, Stanford, CA, USA
| | - Nelly Mauras
- Division of Endocrinology, Diabetes & Metabolism, Nemours Children's Health, Jacksonville, FL, USA
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9
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Pitts S, Schwartz A, Carraccio CL, Herman BE, Mahan JD, Sauer CG, Dammann CEL, Aye T, Myers AL, Weiss PG, Turner DA, Hsu DC, Stafford DEJ, Chess PR, Fussell JJ, McGann KA, High P, Curran ML, Mink RB. Fellow Entrustment for the Common Pediatric Subspecialty Entrustable Professional Activities Across Subspecialties. Acad Pediatr 2022; 22:881-886. [PMID: 34936942 DOI: 10.1016/j.acap.2021.12.019] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/28/2021] [Revised: 12/13/2021] [Accepted: 12/16/2021] [Indexed: 11/17/2022]
Abstract
OBJECTIVE To determine the relationship between level of supervision (LOS) ratings for the Common Pediatric Subspecialty Entrustable Professional Activities (EPAs) with their associated subcompetency milestones across subspecialties and by fellowship training year. METHODS Clinical Competency Committees (CCCs) in 14 pediatric subspecialties submitted LOS ratings for 6 Common Subspecialty EPAs and subcompetency milestone levels mapped to these EPAs. We examined associations between these subcompetency milestone levels and LOS ratings across subspecialty training year by fitting per-EPA linear mixed effects models, regressing LOS rating on milestone level and on training year. RESULTS CCCs from 211 pediatric fellowship programs provided data for 369 first, 336 second, and 331 third year fellows. Mean subcompetency milestone levels increased similarly among subspecialties for most EPAs compared with the reference, Adolescent Medicine. Mean subcompetency milestones mapped to each EPA and mean EPA LOS ratings generally increased by training year across all subspecialties. CONCLUSIONS Subcompetency milestones levels mapped to each Common Subspecialty EPA and the EPA LOS ratings increase similarly across subspecialties and by training year, providing validity evidence for using EPA LOS to assess pediatric subspecialty trainee performance. This study supports the development of tools to facilitated the CCC evaluation process across all pediatric subspecialties.
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Affiliation(s)
- Sarah Pitts
- Department of Pediatrics, Harvard Medical School, Boston Children's Hospital (S Pitts), Boston, Mass.
| | - Alan Schwartz
- Departments of Medical Education and Pediatrics, University of Illinois at Chicago College of Medicine (A Schwartz), Chicago, Ill
| | - Carol L Carraccio
- Competency-Based Medical Education, American Board of Pediatrics (CL Carraccio and DA Turner), Chapel Hill, NC
| | - Bruce E Herman
- Department of Pediatrics, University of Utah School of Medicine (BE Herman), Salt Lake City, Utah
| | - John D Mahan
- Department of Pediatrics, The Ohio State University College of Medicine, Nationwide Children's Hospital (JD Mahan), Columbus, Ohio
| | - Cary G Sauer
- Department of Pediatrics, Emory University School of Medicine, Children's Healthcare of Atlanta (CG Sauer), Atlanta, Ga
| | | | - Tandy Aye
- Department of Pediatrics, Stanford University School of Medicine (T Aye), Los Gatos, Calif
| | - Angela L Myers
- Children's Mercy Kansas City, UMKC School of Medicine (AL Myers), Kansas City, Mo
| | - Pnina G Weiss
- Department of Pediatrics, Yale School of Medicine (PG Weiss), New Haven, Conn
| | - David A Turner
- Competency-Based Medical Education, American Board of Pediatrics (DA Turner), Chapel Hill, NC
| | - Deborah C Hsu
- Department of Pediatrics, Baylor College of Medicine/Texas Children's Hospital (DC Hsu), Houston, Tex
| | - Diane E J Stafford
- Department of Pediatrics, Stanford University School of Medicine, Stanford University School of Medicine, Center of Academic Medicine (DEJ Stafford), Stanford, Calif; Division of Pediatric Endocrinology (DEJ Stafford), Palo Alto, Calif
| | - Patricia R Chess
- Department of Pediatrics, University of Rochester School of Medicine and Dentistry (PR Chess), Rochester, NY
| | - Jill J Fussell
- Department of Pediatrics, University of Arkansas for Medical Sciences (JJ Fussell), Little Rock, Ark
| | - Kathleen A McGann
- Department of Pediatrics, Duke University Medical Center (KA McGann), Durham, NC
| | - Pamela High
- Department of Pediatrics, W. Alpert Medical School of Brown University (P High), Providence, RI
| | - Megan L Curran
- Department of Pediatrics, University of Colorado (ML Curran), Aurora, Colo
| | - Richard B Mink
- Department of Pediatrics, David Geffen School of Medicine, University of California, Los Angeles (UCLA) (RB Mink); Lundquist Institute for Biomedical Innovation at Harbor UCLA Medical Center (RB Mink), Torrance, Calif
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10
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Abstract
Although 37.5–51% of transgender adults state they would’ve considered freezing gametes before gender-affirming therapy if offered and 24–25.8% of transgender adolescents express interest in having biological children, less than 5% of transgender adolescents have opted for fertility preservation. We sought to assess fertility preservation utilization in our multidisciplinary adolescent gender clinic. We also aimed to identify fertility preservation utilization and interest among non-binary adolescents and young adults. A retrospective review was conducted of patients seen in the Stanford Pediatric & Adolescent Gender Clinic from October 2015 through March 2019 who were >10 years of age at initial visit. All individuals with documented discussion of fertility preservation were offered referral for formal fertility preservation consultation but only 24% of patients accepted. Only 6.8% of individuals subsequently underwent fertility preservation (n = 9). Transfeminine adolescents are more likely to pursue fertility preservation than transmasculine adolescents (p = 0.01). The rate of fertility preservation in non-binary adolescents did not significantly differ from those in transfeminine adolescents (p = 1.00) or transmasculine adolescents (p = 0.31). Although only one non-binary individual underwent fertility preservation, several more expressed interest with 36% accepting referral (n = 4) and 27% being seen in consultation (n = 3). Despite offering fertility preservation with designated members of a gender clinic team, utilization remains low in transgender adolescents. Additionally, non-binary adolescents and their families are interested in fertility preservation and referrals should be offered to these individuals. Further studies and advocacy are required to continue to address fertility needs of transgender adolescents.
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Affiliation(s)
- Holly C. Cooper
- Department of Pediatric Endocrinology, Mary Bridge Children’s Hospital, Tacoma, Washington, United States of America
- * E-mail:
| | - Jin Long
- Department of Pediatrics, Stanford University School of Medicine, Stanford, California, United States of America
| | - Tandy Aye
- Department of Pediatric Endocrinology, Mary Bridge Children’s Hospital, Tacoma, Washington, United States of America
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11
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Weiss PG, Schwartz A, Carraccio CL, Herman BE, Turner DA, Aye T, Fussell JJ, Kesselheim J, Mahan JD, McGann KA, Myers A, Stafford DEJ, Chess PR, Curran ML, Dammann CEL, High P, Hsu DC, Pitts S, Sauer C, Srivastava S, Mink RB. Achieving Entrustable Professional Activities During Fellowship. Pediatrics 2021; 148:peds.2021-050196. [PMID: 34667096 DOI: 10.1542/peds.2021-050196] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 07/12/2021] [Indexed: 11/24/2022] Open
Abstract
BACKGROUND AND OBJECTIVES Entrustable Professional Activities (EPAs) were developed to assess pediatric fellows. We previously showed that fellowship program directors (FPDs) may graduate fellows who still require supervision. How this compares with their expectations for entrustment of practicing subspecialists is unknown. METHODS We surveyed US FPDs in 14 pediatric subspecialties through the Subspecialty Pediatrics Investigator Network between April and August 2017. For each of 7 common pediatric subspecialty EPAs, we compared the minimum level of supervision that FPDs required for graduation with the level they expected of subspecialists for safe and effective practice using the Friedman rank sum test and paired t test. We compared differences between subspecialties using linear regression. RESULTS We collected data from 660 FPDs (response rate 82%). For all EPAs, FPDs did not require fellows to reach the level of entrustment for graduation that they expected of subspecialists to practice (P < .001). FPDs expected the least amount of supervision for the EPAs consultation and handovers. Mean differences between supervision levels for graduation and practice were smaller for clinical EPAs (consultation, handovers, lead a team) when compared with nonclinical EPAs (quality improvement, management, lead the profession and scholarship; P = .001) and were similar across nearly all subspecialties. CONCLUSIONS Fellowship graduates may need continued development of clinical and nonclinical skills in their early practice period, underscoring a need for continued assessment and mentoring. Graduation readiness must be based on clear requirements, with alignment of FPD expectations and regulatory standards, to ensure quality care for patients.
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Affiliation(s)
- Pnina G Weiss
- Department of Pediatrics, School of Medicine, Yale University, New Haven, Connecticut
| | - Alan Schwartz
- Departments of Medical Education and Pediatrics, College of Medicine, University of Illinois at Chicago, Chicago, Illinois
| | | | - Bruce E Herman
- Department of Pediatrics, School of Medicine, University of Utah, Salt Lake City, Utah
| | | | - Tandy Aye
- Department of Pediatrics, School of Medicine, Stanford University, Stanford, California
| | - Jill J Fussell
- Department of Pediatrics, University of Arkansas for Medical Sciences, Little Rock, Arkansas
| | - Jennifer Kesselheim
- Department of Pediatrics, Dana-Farber/Boston Children's Cancer and Blood Disorders Center and Harvard Medical School, Harvard University, Boston, Massachusetts
| | - John D Mahan
- Department of Pediatrics, College of Medicine, The Ohio State University, Columbus, Ohio
| | - Kathleen A McGann
- Department of Pediatrics, School of Medicine, Duke University, Durham, North Carolina
| | - Angela Myers
- Department of Pediatrics, Children's Mercy Kansas City and School of Medicine, University of Missouri-Kansas City, Kansas City, Missouri
| | - Diane E J Stafford
- Department of Pediatrics, School of Medicine, Stanford University, Stanford, California
| | | | - Megan L Curran
- Department of Pediatrics, University of Colorado, Denver, Colorado
| | | | - Pamela High
- Department of Pediatrics, The Warren Alpert Medical School, Brown University, Providence, Rhode Island
| | - Deborah C Hsu
- Department of Pediatrics, Baylor College of Medicine and Texas Children's Hospital, Houston, Texas
| | - Sarah Pitts
- Department of Pediatrics, Harvard Medical School, Harvard University, Boston, Massachusetts
| | - Cary Sauer
- Department of Pediatrics, School of Medicine, Emory University and Children's Healthcare of Atlanta, Atlanta, Georgia
| | | | - Richard B Mink
- Department of Pediatrics, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, California.,The Lundquist Institute for Biomedical Innovation, Harbor-University of California, Los Angeles Medical Center, Torrance, California
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12
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Turner DA, Schwartz A, Carraccio C, Herman B, Weiss P, Baffa JM, Chess P, Curran M, Dammann C, High P, Hsu D, Pitts S, Sauer C, Aye T, Fussell J, Kesselheim J, Mahan J, McGann K, Myers A, Mink R. Continued Supervision for the Common Pediatric Subspecialty Entrustable Professional Activities May Be Needed Following Fellowship Graduation. Acad Med 2021; 96:S22-S28. [PMID: 34183598 DOI: 10.1097/acm.0000000000004091] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
PURPOSE Entrustable professional activities (EPAs) are one approach to competency-based medical education (CBME), and 7 EPAs have been developed that address content relevant for all pediatric subspecialties. However, it is not known what level of supervision fellowship program directors (FPDs) deem necessary for graduation. The Subspecialty Pediatrics Investigator Network (SPIN) investigated FPD perceptions of the minimum level of supervision required for a trainee to successfully graduate. METHOD In 2017, SPIN surveyed all FPDs of accredited fellowships for 14 subspecialties. For each EPA, the minimum supervision level for graduation (ranging from observation only to unsupervised practice) was set such that no more than 20% of FPDs would accept a lower level. RESULTS The survey response rate was 82% (660/802). The minimum supervision level for graduation varied across the 7 EPAs from 2 (direct) to 4 (indirect for complex cases), with significant differences between EPAs. The percentage of FPDs desiring a lower minimum supervision level ranged from 3% to 17%. Compared with the 4 nonclinical EPAs (quality improvement, management, lead within the profession, scholarship), the 3 clinical EPAs (consultation, handover, lead a team) had higher minimum supervision graduation levels (P < .001), with less likelihood that an FPD would graduate a learner below their minimum level (P < .001). CONCLUSIONS Consensus among FPDs across all pediatric subspecialties demonstrates the potential need for ongoing supervision for graduates in all 7 common pediatric subspecialty EPAs after fellowship. As CBME programs are implemented, processes and infrastructure to support new graduates are important considerations for leaders.
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Affiliation(s)
- David A Turner
- D.A. Turner is vice president of competency-based medical education, American Board of Pediatrics, Chapel Hill, North Carolina, and consulting professor, Duke University Medical Center, Durham, North Carolina. At the time this work was completed, he was associate professor, Duke University Medical Center, Durham, North Carolina
| | - Alan Schwartz
- A. Schwartz is the Michael Reese Endowed Professor of Medical Education, interim head, Department of Medical Education, and research professor, Department of Pediatrics, University of Illinois at Chicago College of Medicine, Chicago, Illinois
| | - Carol Carraccio
- C. Carraccio was vice president of competency-based medical education, American Board of Pediatrics, Chapel Hill, North Carolina at the time this work was completed
| | - Bruce Herman
- B. Herman is professor and vice chair of education, Department of Pediatrics, University of Utah School of Medicine, Salt Lake City, Utah
| | - Pnina Weiss
- P. Weiss is vice chair of education and associate professor, Department of Pediatrics, Yale School of Medicine, New Haven, Connecticut
| | - Jeanne M Baffa
- J.M. Baffa is emeritus associate professor of pediatrics, Sidney Kimmel Medical College of Thomas Jefferson University, Nemours/Alfred I. duPont Hospital for Children, Wilmington, Delaware
| | - Patricia Chess
- P. Chess is professor, University of Rochester Medical Center, Rochester, New York
| | - Megan Curran
- M. Curran is associate professor, Department of Pediatrics, University of Colorado-Denver, Denver, Colorado
| | - Christiane Dammann
- C. Damman is professor, Department of Pediatrics, Tufts Children's Hospital, Boston, Massachusetts
| | - Pamela High
- P. High is professor, the Warren Alpert Medical School of Brown University, Providence, Rhode Island
| | - Deborah Hsu
- D. Hsu is professor, Department of Pediatrics, Section of Emergency Medicine, Baylor College of Medicine/Texas Children's Hospital, Houston, Texas
| | - Sarah Pitts
- S. Pitts is assistant professor, Department of Pediatrics, Harvard Medical School, Boston, Massachusetts
| | - Cary Sauer
- C. Sauer is associate professor, Emory University School of Medicine, Children's Healthcare of Atlanta, Atlanta, Georgia
| | - Tandy Aye
- T. Aye is associate professor, Department of Pediatrics, Stanford University School of Medicine, Stanford, California
| | - Jill Fussell
- J. Fussell is professor, Department of Pediatrics, University of Arkansas for Medical Sciences, Little Rock, Arkansas
| | - Jennifer Kesselheim
- J. Kesselheim is associate professor, Department of Pediatrics, Dana-Farber/Boston Children's Cancer and Blood Disorders Center, Harvard Medical School, Boston, Massachusetts
| | - John Mahan
- J. Mahan is professor, Department of Pediatrics, The Ohio State University College of Medicine, Columbus, Ohio
| | - Kathleen McGann
- K. McGann is vice chair of education and professor, Department of Pediatrics, Duke University Medical Center, Durham, North Carolina
| | - Angie Myers
- A. Myers is professor of pediatrics, University of Missouri-Kansas City School of Medicine, Kansas City, Missouri
| | - Richard Mink
- R. Mink is professor of pediatrics, The David Geffen School of Medicine at University of California Los Angeles (UCLA) and The Lundquist Institute for Biomedical Innovation at Harbor-UCLA Medical Center, Torrance, California
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13
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Hale AE, Chertow SY, Weng Y, Tabuenca A, Aye T. Perceptions of Support Among Transgender and Gender-Expansive Adolescents and Their Parents. J Adolesc Health 2021; 68:1075-1081. [PMID: 33707145 DOI: 10.1016/j.jadohealth.2020.11.021] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/14/2020] [Revised: 11/13/2020] [Accepted: 11/23/2020] [Indexed: 11/16/2022]
Abstract
PURPOSE To capture and compare the perspectives of parents and their transgender and gender expansive (TGE) adolescents during pivotal moments of gender identity development and to report the level of adjustment during these parental experiences. METHODS We utilized a mixed-methods approach and interviewed 36 parents and 23 TGE adolescents at our Gender Clinic. Parents retrospectively identified "pivotal moments" in their child's gender identity development and rated their levels of support and adjustment. Adolescents independently rated their parent's level of support during these moments to allow for comparative analyses. RESULTS The supportive behavior most frequently identified by parents was connecting the adolescent to services, while adolescents considered their parents' use of the affirmed name or pronouns to be most supportive. We found a positive correlation between the parents' perceptions of support and those of TGE adolescents during pivotal moments (r = 0.4, p < 0.001). Adolescents rated the degree of parental support to be 3.73 points (95% confidence interval: [2.67,4.8], p < 0.001) higher on a Likert scale than corresponding ratings provided by parents in a generalized estimating equation model. Parents experienced moderate need for adjustment during these moments. CONCLUSIONS Providers may use these findings to guide parents toward gender affirmative behaviors that may protect against negative mental health outcomes.
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Affiliation(s)
- Arthur E Hale
- Division of Pediatric Endocrinology, Stanford University School of Medicine, Stanford, California
| | - Solana Y Chertow
- Division of Pediatric Endocrinology, Stanford University School of Medicine, Stanford, California
| | - Yingjie Weng
- Quantitative Sciences Unit, Stanford University School of Medicine, Stanford, California
| | - Andrea Tabuenca
- Division of Child and Adolescent Psychiatry, Stanford University School of Medicine, Stanford, California
| | - Tandy Aye
- Division of Pediatric Endocrinology, Stanford University School of Medicine, Stanford, California.
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14
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Allen DB, Aye T, Boney CM, Eugster EA, Misra M, Singer K, Stafford D, Witchel SF, Zeitler P. Sustaining the Pediatric Endocrinology Workforce: Recommendations from the Pediatric Endocrine Society Workforce Task Force. J Pediatr 2021; 233:4-7. [PMID: 33137317 DOI: 10.1016/j.jpeds.2020.10.063] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/27/2020] [Indexed: 10/23/2022]
Affiliation(s)
- David B Allen
- Division of Pediatric Endocrinology and Diabetes, University of Wisconsin School of Medicine and Public Health, Madison, WI.
| | - Tandy Aye
- Division of Pediatric Endocrinology, Stanford University School of Medicine, Stanford, CA
| | - Charlotte M Boney
- Division of Pediatric Endocrinology, University of Massachusetts Medical School-Baystate, Springfield, MA
| | - Erica A Eugster
- Division of Pediatric Endocrinology, Riley Hospital for Children at IU Health, Indiana University School of Medicine, Indianapolis, IN
| | - Madhusmita Misra
- Division of Pediatric Endocrinology, Massachusetts General Hospital and Harvard Medical School, Boston, MA
| | - Kanakadurga Singer
- Division of Pediatric Endocrinology, Department of Pediatrics, University of Michigan, Ann Arbor, MI
| | - Diane Stafford
- Division of Pediatric Endocrinology, Stanford University School of Medicine, Stanford, CA
| | - Selma F Witchel
- Division of Pediatric Endocrinology, UPMC Children's Hospital of Pittsburgh, University of Pittsburgh, Pittsburgh, PA
| | - Philip Zeitler
- Division of Pediatric Endocrinology, University of Colorado School of Medicine, Aurora, CO
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15
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Mauras N, Buckingham B, White NH, Tsalikian E, Weinzimer SA, Jo B, Cato A, Fox LA, Aye T, Arbelaez AM, Hershey T, Tansey M, Tamborlane W, Foland-Ross LC, Shen H, Englert K, Mazaika P, Marzelli M, Reiss AL. Impact of Type 1 Diabetes in the Developing Brain in Children: A Longitudinal Study. Diabetes Care 2021; 44:983-992. [PMID: 33568403 PMCID: PMC7985430 DOI: 10.2337/dc20-2125] [Citation(s) in RCA: 36] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/25/2020] [Accepted: 01/05/2021] [Indexed: 02/03/2023]
Abstract
OBJECTIVE To assess whether previously observed brain and cognitive differences between children with type 1 diabetes and control subjects without diabetes persist, worsen, or improve as children grow into puberty and whether differences are associated with hyperglycemia. RESEARCH DESIGN AND METHODS One hundred forty-four children with type 1 diabetes and 72 age-matched control subjects without diabetes (mean ± SD age at baseline 7.0 ± 1.7 years, 46% female) had unsedated MRI and cognitive testing up to four times over 6.4 ± 0.4 (range 5.3-7.8) years; HbA1c and continuous glucose monitoring were done quarterly. FreeSurfer-derived brain volumes and cognitive metrics assessed longitudinally were compared between groups using mixed-effects models at 6, 8, 10, and 12 years. Correlations with glycemia were performed. RESULTS Total brain, gray, and white matter volumes and full-scale and verbal intelligence quotients (IQs) were lower in the diabetes group at 6, 8, 10, and 12 years, with estimated group differences in full-scale IQ of -4.15, -3.81, -3.46, and -3.11, respectively (P < 0.05), and total brain volume differences of -15,410, -21,159, -25,548, and -28,577 mm3 at 6, 8, 10, and 12 years, respectively (P < 0.05). Differences at baseline persisted or increased over time, and brain volumes and cognitive scores negatively correlated with a life-long HbA1c index and higher sensor glucose in diabetes. CONCLUSIONS Detectable changes in brain volumes and cognitive scores persist over time in children with early-onset type 1 diabetes followed longitudinally; these differences are associated with metrics of hyperglycemia. Whether these changes can be reversed with scrupulous diabetes control requires further study. These longitudinal data support the hypothesis that the brain is a target of diabetes complications in young children.
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Affiliation(s)
- Nelly Mauras
- Division of Endocrinology, Diabetes & Metabolism, Department of Pediatrics, Nemours Children's Health System, Jacksonville, FL
| | - Bruce Buckingham
- Division of Endocrinology and Diabetes, Department of Pediatrics, Stanford University, Stanford, CA
| | - Neil H White
- Division of Endocrinology and Diabetes, Department of Pediatrics, Washington University in St. Louis, St. Louis, MO
| | - Eva Tsalikian
- Division of Endocrinology and Diabetes, Stead Family Department of Pediatrics, University of Iowa, Iowa City, IA
| | | | - Booil Jo
- Center for Interdisciplinary Brain Sciences, Department of Psychiatry and Behavioral Sciences, Stanford University, Stanford, CA
| | - Allison Cato
- Division of Neurology, Nemours Children's Health System, Jacksonville, FL
| | - Larry A Fox
- Division of Endocrinology, Diabetes & Metabolism, Department of Pediatrics, Nemours Children's Health System, Jacksonville, FL
| | - Tandy Aye
- Division of Endocrinology and Diabetes, Department of Pediatrics, Stanford University, Stanford, CA
| | - Ana Maria Arbelaez
- Division of Endocrinology and Diabetes, Department of Pediatrics, Washington University in St. Louis, St. Louis, MO
| | - Tamara Hershey
- Departments of Radiology and Psychiatry, Washington University in St. Louis, St. Louis, MO
| | - Michael Tansey
- Division of Endocrinology and Diabetes, Stead Family Department of Pediatrics, University of Iowa, Iowa City, IA
| | | | - Lara C Foland-Ross
- Center for Interdisciplinary Brain Sciences, Department of Psychiatry and Behavioral Sciences, Stanford University, Stanford, CA
| | - Hanyang Shen
- Center for Interdisciplinary Brain Sciences, Department of Psychiatry and Behavioral Sciences, Stanford University, Stanford, CA
| | - Kimberly Englert
- Division of Endocrinology, Diabetes & Metabolism, Department of Pediatrics, Nemours Children's Health System, Jacksonville, FL
| | - Paul Mazaika
- Center for Interdisciplinary Brain Sciences, Department of Psychiatry and Behavioral Sciences, Stanford University, Stanford, CA
| | - Matthew Marzelli
- Center for Interdisciplinary Brain Sciences, Department of Psychiatry and Behavioral Sciences, Stanford University, Stanford, CA
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16
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Kumar S, Ashraf AP, Lteif A, Lynch J, Aye T. Pediatric Endocrinology: Perspectives of Pediatric Endocrinologists Regarding Career Choice and Recruitment of Trainees. Endocr Pract 2020; 27:743-748. [PMID: 34132198 DOI: 10.1016/j.eprac.2020.12.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/27/2020] [Revised: 11/16/2020] [Accepted: 12/03/2020] [Indexed: 10/22/2022]
Abstract
OBJECTIVES To examine main factors that influence the decision to choose pediatric endocrinology as a career among pediatric endocrinologists and assess their work satisfaction or stress level and suggested strategies to increase interest in subspecialty training in pediatric endocrinology. METHODS A workforce survey was distributed among 1470 members of the Pediatric Endocrine Society. RESULTS The response rate was 37.4%, with 550 members responding. The most common reasons for the respondents choosing pediatric endocrinology were intellectual stimulation (79%), exposure to endocrinology during residency (57%) or medical school (43%), and ability to establish relationships with patients with chronic disorders (54%). Of the respondents, 97% considered intellectual stimulation as the most favorable aspect of the specialty, and 84% considered financial compensation as the most unfavorable aspect of pediatric endocrinology. Majority (77%) were satisfied or very satisfied with their work environment. The mean work-related stress score (0 [none] to 10 [worst]) was 5.7, standard deviation was 2.1, and median was 6 (Q1, Q3: 4, 7). Increased financial compensation for the services and loan payment or forgiveness option were the top strategies suggested to enhance interest among residents for training in the subspecialty. One third (37%) felt that reducing the duration of the fellowship to 2 years would increase interest in training in pediatric endocrinology. CONCLUSION The pediatric endocrinologists reported overall excellent career satisfaction, indicating the potential to attract high-quality doctors to the specialty. Improving reimbursement and loan forgiveness were the top strategies suggested for increasing interest in subspecialty training in pediatric endocrinology.
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Affiliation(s)
- Seema Kumar
- Division of Pediatric Endocrinology, Mayo Clinic Children's Center, Rochester, Minnesota.
| | - Ambika P Ashraf
- Pediatric Endocrinology and Diabetes, University of Alabama at Birmingham, Birmingham, Alabama
| | - Aida Lteif
- Division of Pediatric Endocrinology, Mayo Clinic Children's Center, Rochester, Minnesota
| | - Jane Lynch
- Division of Endocrinology, University of Texas Health Science Center San Antonio, San Antonio, Texas
| | - Tandy Aye
- Division of Pediatric Endocrinology, Stanford University School of Medicine, Stanford, California
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17
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Foland-Ross LC, Tong G, Mauras N, Cato A, Aye T, Tansey M, White NH, Weinzimer SA, Englert K, Shen H, Mazaika PK, Reiss AL. Brain Function Differences in Children With Type 1 Diabetes: A Functional MRI Study of Working Memory. Diabetes 2020; 69:1770-1778. [PMID: 32471809 PMCID: PMC7372069 DOI: 10.2337/db20-0123] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/31/2020] [Accepted: 05/21/2020] [Indexed: 12/12/2022]
Abstract
Glucose is a primary fuel source to the brain, yet the influence of dysglycemia on neurodevelopment in children with type 1 diabetes remains unclear. We examined brain activation using functional MRI in 80 children with type 1 diabetes (mean ± SD age 11.5 ± 1.8 years; 46% female) and 47 children without diabetes (control group) (age 11.8 ± 1.5 years; 51% female) as they performed a visuospatial working memory (N-back) task. Results indicated that in both groups, activation scaled positively with increasing working memory load across many areas, including the frontoparietal cortex, caudate, and cerebellum. Between groups, children with diabetes exhibited reduced performance on the N-back task relative to children in the control group, as well as greater modulation of activation (i.e., showed greater increase in activation with higher working memory load). Post hoc analyses indicated that greater modulation was associated in the diabetes group with better working memory function and with an earlier age of diagnosis. These findings suggest that increased modulation may occur as a compensatory mechanism, helping in part to preserve working memory ability, and further, that children with an earlier onset require additional compensation. Future studies that test whether these patterns change as a function of improved glycemic control are warranted.
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Affiliation(s)
- Lara C Foland-Ross
- Center for Interdisciplinary Brain Sciences Research, Department of Psychiatry and Behavioral Sciences, Stanford University, Stanford, CA
| | - Gabby Tong
- Center for Interdisciplinary Brain Sciences Research, Department of Psychiatry and Behavioral Sciences, Stanford University, Stanford, CA
| | - Nelly Mauras
- Division of Endocrinology, Diabetes and Metabolism, Nemours Children's Health System, Jacksonville, FL
| | - Allison Cato
- Division of Neurology, Nemours Children's Health System, Jacksonville, FL
| | - Tandy Aye
- Department of Pediatrics, Stanford University School of Medicine, Stanford, CA
| | - Michael Tansey
- Department of Pediatrics, The University of Iowa, Iowa City, IA
| | - Neil H White
- Department of Pediatrics, Washington University in St. Louis and the St. Louis Children's Hospital, St. Louis, MO
| | | | - Kimberly Englert
- Division of Endocrinology, Diabetes and Metabolism, Nemours Children's Health System, Jacksonville, FL
| | - Hanyang Shen
- Center for Interdisciplinary Brain Sciences Research, Department of Psychiatry and Behavioral Sciences, Stanford University, Stanford, CA
| | - Paul K Mazaika
- Center for Interdisciplinary Brain Sciences Research, Department of Psychiatry and Behavioral Sciences, Stanford University, Stanford, CA
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18
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Abstract
Objective: Every year, 500,000 youths in the U.S. with chronic disease turn 18 years of age and eventually require transfer to adult subspecialty care. Evidence-based interventions on the organization of transfer of care are limited, although engagement and retention in adult clinic are considered appropriate outcomes. Sustained continuity of care improves patient satisfaction and reduces hospitalization. Methods: We conducted a prospective, nonrandomized cohort study of patients with pediatric endocrine conditions, age 16 to 26 years, enrolled upon referral to the adult endocrine clinic of a physician trained in both adult and pediatric endocrinology (Med+Peds endocrinologist). Patients differed based on whether their referral originated from another pediatric endocrinologist (traditional transfer) or if the Med+Peds endocrinologist previously saw the patient in his pediatric endocrine clinic (guided transfer). Rather than relying on arbitrary age criteria, guided transfer to adult clinic occurred when physician and patient considered it appropriate. The primary outcome was show rate at the first and second adult visits. Results: Of 36 patients, 21 were referred by another pediatric endocrinologist and 15 underwent guided transfer. For traditional transfer, show rate to the first and second visit was 38%, compared to 100% in the guided transfer group (P = .0001). Subgroup analysis of 27 patients with diabetes revealed that both groups had similar initial hemoglobin A1c (P = .38), and the guided transfer group maintained hemoglobin A1c. Conclusion: Most traditional transfers were unsuccessful. Guided transfer was significantly more effective, with every patient successfully transferring, and could be implemented with adult endocrinologists willing to see patients in the pediatric clinic. Abbreviations: DKA = diabetic ketoacidosis; HbA1c = hemoglobin A1c; Med+Peds = Internal Medicine and Pediatrics.
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19
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Mazaika PK, Marzelli M, Tong G, Foland-Ross LC, Buckingham BA, Aye T, Reiss AL. Functional near-infrared spectroscopy detects increased activation of the brain frontal-parietal network in youth with type 1 diabetes. Pediatr Diabetes 2020; 21:515-523. [PMID: 32003523 DOI: 10.1111/pedi.12992] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/03/2019] [Revised: 01/16/2020] [Accepted: 01/24/2020] [Indexed: 12/30/2022] Open
Abstract
When considered as a group, children with type 1 diabetes have subtle cognitive deficits relative to neurotypical controls. However, the neural correlates of these differences remain poorly understood. Using functional near-infrared spectroscopy (fNIRS), we investigated the brain functional activations of young adolescents (19 individuals with type 1 diabetes, 18 healthy controls, ages 8-16 years) during a Go/No-Go response inhibition task. Both cohorts had the same performance on the task, but the individuals with type 1 diabetes subjects had higher activations in a frontal-parietal network including the bilateral supramarginal gyri and bilateral rostrolateral prefrontal cortices. The activations in these regions were positively correlated with fewer parent-reported conduct problems (ie, lower Conduct Problem scores) on the Behavioral Assessment System for Children, Second Edition. Lower Conduct Problem scores are characteristic of less rule-breaking behavior suggesting a link between this brain network and better self-control. These findings are consistent with a large functional magnetic resonance imaging (fMRI) study of children with type 1 diabetes using completely different participants. Perhaps surprisingly, the between-group activation results from fNIRS were statistically stronger than the results using fMRI. This pilot study is the first fNIRS investigation of executive function for individuals with type 1 diabetes. The results suggest that fNIRS is a promising functional neuroimaging resource for detecting the brain correlates of behavior in the pediatric clinic.
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Affiliation(s)
- Paul K Mazaika
- Department of Psychiatry and Behavioral Sciences, Center for Interdisciplinary Brain Sciences Research (CIBSR), Stanford University School of Medicine, Stanford, California
| | - Matthew Marzelli
- Department of Psychiatry and Behavioral Sciences, Center for Interdisciplinary Brain Sciences Research (CIBSR), Stanford University School of Medicine, Stanford, California
| | - Gabby Tong
- Department of Psychiatry and Behavioral Sciences, Center for Interdisciplinary Brain Sciences Research (CIBSR), Stanford University School of Medicine, Stanford, California
| | - Lara C Foland-Ross
- Department of Psychiatry and Behavioral Sciences, Center for Interdisciplinary Brain Sciences Research (CIBSR), Stanford University School of Medicine, Stanford, California
| | - Bruce A Buckingham
- Department of Pediatrics, Stanford University School of Medicine, Stanford, California
| | - Tandy Aye
- Department of Psychiatry and Behavioral Sciences, Center for Interdisciplinary Brain Sciences Research (CIBSR), Stanford University School of Medicine, Stanford, California.,Department of Pediatrics, Stanford University School of Medicine, Stanford, California
| | - Allan L Reiss
- Department of Psychiatry and Behavioral Sciences, Center for Interdisciplinary Brain Sciences Research (CIBSR), Stanford University School of Medicine, Stanford, California.,Department of Pediatrics, Stanford University School of Medicine, Stanford, California.,Department of Radiology, Stanford University School of Medicine, Stanford, California
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20
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Jacobsen LM, Bocchino L, Evans-Molina C, DiMeglio L, Goland R, Wilson DM, Atkinson MA, Aye T, Russell WE, Wentworth JM, Boulware D, Geyer S, Sosenko JM. The risk of progression to type 1 diabetes is highly variable in individuals with multiple autoantibodies following screening. Diabetologia 2020; 63:588-596. [PMID: 31768570 PMCID: PMC7229995 DOI: 10.1007/s00125-019-05047-w] [Citation(s) in RCA: 54] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/21/2019] [Accepted: 10/11/2019] [Indexed: 12/30/2022]
Abstract
AIMS/HYPOTHESIS Young children who develop multiple autoantibodies (mAbs) are at very high risk for type 1 diabetes. We assessed whether a population with mAbs detected by screening is also at very high risk, and how risk varies according to age, type of autoantibodies and metabolic status. METHODS Type 1 Diabetes TrialNet Pathway to Prevention participants with mAbs (n = 1815; age, 12.35 ± 9.39 years; range, 1-49 years) were analysed. Type 1 diabetes risk was assessed according to age, autoantibody type/number (insulin autoantibodies [IAA], glutamic acid decarboxylase autoantibodies [GADA], insulinoma-associated antigen-2 autoantibodies [IA-2A] or zinc transporter 8 autoantibodies [ZnT8A]) and Index60 (composite measure of fasting C-peptide, 60 min glucose and 60 min C-peptide). Cox regression and cumulative incidence curves were utilised in this cohort study. RESULTS Age was inversely related to type 1 diabetes risk in those with mAbs (HR 0.97 [95% CI 0.96, 0.99]). Among participants with 2 autoantibodies, those with GADA had less risk (HR 0.35 [95% CI 0.22, 0.57]) and those with IA-2A had higher risk (HR 2.82 [95% CI 1.76, 4.51]) of type 1 diabetes. Those with IAA and GADA had only a 17% 5 year risk of type 1 diabetes. The risk was significantly lower for those with Index60 <1.0 (HR 0.23 [95% CI 0.19, 0.30]) vs those with Index60 values ≥1.0. Among the 12% (225/1815) ≥12.0 years of age with GADA positivity, IA-2A negativity and Index60 <1.0, the 5 year risk of type 1 diabetes was 8%. CONCLUSIONS/INTERPRETATION Type 1 diabetes risk varies substantially according to age, autoantibody type and metabolic status in individuals screened for mAbs. An appreciable proportion of older children and adults with mAbs appear to have a low risk of progressing to type 1 diabetes at 5 years. With this knowledge, clinical trials of type 1 diabetes prevention can better target those most likely to progress.
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Affiliation(s)
- Laura M Jacobsen
- Division of Pediatric Endocrinology, Department of Pediatrics, College of Medicine, University of Florida, 1275 Center Drive, Gainesville, FL, 32610, USA.
| | - Laura Bocchino
- Health Informatics Institute, University of South Florida, Tampa, FL, USA
| | - Carmella Evans-Molina
- Center for Diabetes and Metabolic Diseases, Indiana University School of Medicine, Indianapolis, IN, USA
| | - Linda DiMeglio
- Center for Diabetes and Metabolic Diseases, Indiana University School of Medicine, Indianapolis, IN, USA
| | - Robin Goland
- Division of Pediatric Endocrinology, Diabetes, and Metabolism, Columbia University Medical Center, New York, NY, USA
| | - Darrell M Wilson
- Department of Pediatrics, Stanford University School of Medicine, Stanford, CA, USA
| | - Mark A Atkinson
- Department of Pathology, Immunology and Laboratory Medicine, University of Florida College of Medicine, Gainesville, FL, USA
| | - Tandy Aye
- Department of Pediatrics, Stanford University School of Medicine, Stanford, CA, USA
| | - William E Russell
- Department of Pediatrics, Vanderbilt University Medical Center, Nashville, TN, USA
| | - John M Wentworth
- Walter and Eliza Hall Institute, Parkville, VIC, Australia
- Department of Diabetes and Endocrinology, Royal Melbourne Hospital, Parkville, VIC, Australia
| | - David Boulware
- Health Informatics Institute, University of South Florida, Tampa, FL, USA
| | - Susan Geyer
- Health Informatics Institute, University of South Florida, Tampa, FL, USA
| | - Jay M Sosenko
- Division of Endocrinology, University of Miami, Miami, FL, USA
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21
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Mink R, Herman BE, Carraccio C, Aye T, Baffa JM, Chess PR, Fussell JJ, Sauer CG, Stafford DEJ, Weiss P, Curran ML, Dammann CEL, High PC, Hsu D, Kesselheim JC, Mahan JD, McGann KA, Myers AL, Pitts S, Turner DA, Schwartz A. Agreement of Program Directors With Clinical Competency Committees for Fellow Entrustment. J Med Educ Curric Dev 2020; 7:2382120520936613. [PMID: 32844115 PMCID: PMC7418246 DOI: 10.1177/2382120520936613] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/05/2020] [Accepted: 05/29/2020] [Indexed: 05/26/2023]
Abstract
OBJECTIVES Fellowship program directors (FPD) and Clinical Competency Committees (CCCs) both assess fellow performance. We examined the association of entrustment levels determined by the FPD with those of the CCC for 6 common pediatric subspecialty entrustable professional activities (EPAs), hypothesizing there would be strong correlation and minimal bias between these raters. METHODS The FPDs and CCCs separately assigned a level of supervision to each of their fellows for 6 common pediatric subspecialty EPAs. For each EPA, we determined the correlation between FPD and CCC assessments and calculated bias as CCC minus FPD values for when the FPD was or was not a member of the CCC. In addition, we examined the effect of program size, FPD understanding of EPAs, and subspecialty on the correlations. Data were obtained in fall 2014 and spring 2015. RESULTS A total of 1040 fellows were assessed in the fall and 1048 in the spring. In both periods and for each EPA, there was a strong correlation between FPD and CCC supervision levels (P < .001). The correlation was somewhat lower when the FPD was not a CCC member (P < .001). Overall bias in both periods was small. CONCLUSIONS The correlation between FPD and CCC assignment of EPA supervision levels is strong. Although slightly weaker when the FPD is not a CCC member, bias is small, so this is likely unimportant in determining fellow entrustment level. The similar performance ratings of FPDs and CCCs support the validity argument for EPAs as competency-based assessment tools.
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Affiliation(s)
- Richard Mink
- Department of Pediatrics, Harbor-UCLA Medical Center and The Lundquist Institute, Torrance, CA, USA
| | - Bruce E Herman
- Department of Pediatrics, University of Utah School of Medicine, Salt Lake City, UT, USA
| | | | - Tandy Aye
- Department of Pediatrics, Stanford University School of Medicine, Stanford, CA, USA
| | - Jeanne M Baffa
- Nemours Cardiac Center, Nemours/Alfred I. duPont Hospital for Children, Wilmington, DE, USA
| | - Patricia R Chess
- Department of Pediatrics and Biomedical Engineering, University of Rochester, Rochester, NY, USA
| | - Jill J Fussell
- Department of Pediatrics, University of Arkansas for Medical Sciences, Little Rock, AR, USA
| | - Cary G Sauer
- Department of Pediatrics, Emory University School of Medicine and Children’s Healthcare of Atlanta, Atlanta, GA, USA
| | - Diane E J Stafford
- Department of Pediatrics, Stanford University School of Medicine, Stanford, CA, USA
| | - Pnina Weiss
- Department of Pediatrics, Yale School of Medicine, New Haven, CT, USA
| | - Megan L Curran
- Department of Pediatrics, University of Colorado School of Medicine, Aurora, CO, USA
| | | | - Pamela C High
- Warren Alpert Medical School, Brown University, Providence, RI, USA
| | - Deborah Hsu
- Section of Emergency Medicine, Baylor College of Medicine, Houston, TX, USA
| | - Jennifer C Kesselheim
- Dana-Farber/Boston Children’s Cancer and Blood Disorders Center, Harvard Medical School, Boston, MA, USA
| | - John D Mahan
- College of Medicine, The Ohio State University, Columbus, OH, USA
| | - Kathleen A McGann
- Department of Pediatrics, Duke University Medical Center, Durham, NC, USA
| | - Angela L Myers
- Department of Pediatrics, Children’s Mercy, School of Medicine, University of Missouri–Kansas City, Kansas City, MO, USA
| | - Sarah Pitts
- Divisions of Adolescent Medicine and of Endocrinology, Boston Children’s Hospital, Harvard Medical School, Boston, MA, USA
| | - David A Turner
- Department of Pediatrics, Division of Pediatric Critical Care, Duke Children’s Hospital, Durham, NC, USA
| | - Alan Schwartz
- Department of Medical Education, University of Illinois at Chicago, Chicago, IL, USA; Association of Pediatric Program Directors Longitudinal Educational Assessment Research Network (APPD LEARN)
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22
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Chao CS, Shi RZ, Kumar RB, Aye T. Salivary cortisol levels by tandem mass spectrometry during high dose ACTH stimulation test for adrenal insufficiency in children. Endocrine 2020; 67:190-197. [PMID: 31535345 DOI: 10.1007/s12020-019-02084-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/28/2019] [Accepted: 09/06/2019] [Indexed: 10/26/2022]
Abstract
PURPOSE Serum cortisol measurements after ACTH stimulation are currently used to evaluate for adrenal insufficiency in children. We aim to determine if salivary cortisol measured by liquid chromatography-tandem mass spectrometry (LC-MS/MS) can confirm or replace serum cortisol during high dose ACTH stimulation test to improve test compliance and interpretation. We also aim to gain preliminary understanding of normal ranges of salivary cortisol in normal children at am, bedtime, and midnight. METHODS Children aged 6-17 years meeting study criteria and tested for adrenal insufficiency were recruited to concomitantly collect saliva and serum samples during high dose ACTH stimulation test. Normal children aged 3-18 years were recruited to collect morning, bedtime, and midnight saliva samples. Salivary cortisol was measured using LC-MS/MS while serum cortisol was determined by an immunoassay. RESULTS Salivary cortisol in normal children were higher at am and lower at bedtime and midnight (p value <0.0002 and <0.007, respectively). The midnight and bedtime levels were not sufficiently different (p value 0.36). Salivary cortisol during ACTH stimulation test positively and closely correlated with serum cortisol with 100% specificity and sensitivity when 18 µg/dL for serum and 500 ng/dL for salivary cortisol were used as cutoff values respectively for adrenal sufficiency. CONCLUSIONS Measurement of salivary cortisol by LC-MS/MS is less invasive, more convenient and better time controlled in busy pediatric clinic, therefore is better suited for young children to be used during high dose ACTH stimulation test to evaluate for adrenal insufficiency and to assist interpretation of test results by serum cortisol.
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Affiliation(s)
- Christina S Chao
- Division of Pediatric Endocrinology and Diabetes, Stanford University School of Medicine, Palo Alto, CA, USA
- Pediatric Endocrinology, Kaiser Permanente Roseville Medical Center, Roseville, CA, USA
| | - Run-Zhang Shi
- Department of Pathology, Stanford University School of Medicine, Palo Alto, CA, USA.
| | - Rajiv B Kumar
- Division of Pediatric Endocrinology and Diabetes, Stanford University School of Medicine, Palo Alto, CA, USA
| | - Tandy Aye
- Division of Pediatric Endocrinology and Diabetes, Stanford University School of Medicine, Palo Alto, CA, USA
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Abstract
PURPOSE Body dissatisfaction in transgender youth (TY) may increase the risk for eating disorders. This is the first study using the Eating Disorders Examination Questionnaire (EDE-Q) to assess for eating disorder psychopathology in TY. METHODS Youth aged 13-22 years (n = 106) presenting to a gender clinic from January 2018 to January 2019 completed the EDE-Q and answered questions on weight manipulation for gender-affirming purposes. RESULTS Respondents identified as transmasculine (61%), transfeminine (28%), or nonbinary (11%). Mean age was 16.5 years (standard deviation = 2.0), mean weight was 119.9% median body mass index (standard deviation = 32.9), and 32% were on hormonal therapy. Of the participants, 15% had elevated EDE-Q scores. Most (63%) disclosed weight manipulation for gender-affirming purposes, with 11% of assigned females doing so for menstrual suppression. These behaviors had poor concordance with elevated EDE-Q scores (κ = .137 and .148). CONCLUSIONS Disordered eating behaviors are relatively common among TY. Further studies are needed to validate the EDE-Q in TY and establish meaningful cutoff score values.
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Affiliation(s)
- Jonathan T Avila
- Division of Adolescent Medicine, Department of Pediatrics, Lucile Packard Children's Hospital, Stanford University School of Medicine, Palo Alto, California.
| | - Neville H Golden
- Division of Adolescent Medicine, Department of Pediatrics, Lucile Packard Children's Hospital, Stanford University School of Medicine, Palo Alto, California
| | - Tandy Aye
- Division of Pediatric Endocrinology and Diabetes, Department of Pediatrics, Lucile Packard Children's Hospital, Stanford University School of Medicine, Palo Alto, California
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24
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Abstract
Providers often encourage patients with type 1 diabetes (T1D) to contact them with blood glucose (BG) values between visits. However, patients and families find it cumbersome to share their BG values with clinical providers, creating a barrier to communication. Although many phone applications exist to help patients track BG values, most do not integrate with the electronic health record (EHR). Recent advances in technology can integrate the glucose meter (GM) data into the EHR. This pilot and feasibility study aimed to understand how an automated integration system of GM data into the EHR and remote monitoring by health care providers would impact patient-provider communication. Patients or parents of patients with T1D (n = 32, average hemoglobin A1c [HgbA1c]: 8.5%, SD: 1.7, average age: 13.9 years, SD: 3.8) who owned an Apple iPod® or iPhone® (5s or higher) participated, and their number of contacts through telephone calls or MyChart™ messages between clinic visits was recorded during each of the three phases: run-in, intervention, and learned. Twenty-eight families completed all phases, and despite guided review of BG trends and automated integration of BG values, the number of patient-initiated calls (P = 0.23) and HgbA1c values (P = 0.08) did not improve, nor was there a clinically significant change in the number of BG checks per day. Barriers to adoption and effectiveness of this technology exist, and patient motivation is still needed.
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Affiliation(s)
- Jake Weatherly
- Pediatric Endocrinology and Diabetes, Stanford University School of Medicine, Stanford, California
| | - Saniya Kishnani
- Pediatric Endocrinology and Diabetes, Stanford University School of Medicine, Stanford, California
| | - Tandy Aye
- Pediatric Endocrinology and Diabetes, Stanford University School of Medicine, Stanford, California
- Address correspondence to: Tandy Aye, MD, Pediatric Endocrinology and Diabetes, Stanford University School of Medicine, 300 Pasteur Drive G313, Stanford, CA 94305
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25
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Aye T, Mazaika PK, Mauras N, Marzelli MJ, Shen H, Hershey T, Cato A, Weinzimer SA, White NH, Tsalikian E, Jo B, Reiss AL. Impact of Early Diabetic Ketoacidosis on the Developing Brain. Diabetes Care 2019; 42:443-449. [PMID: 30573652 PMCID: PMC6385695 DOI: 10.2337/dc18-1405] [Citation(s) in RCA: 65] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/02/2018] [Accepted: 11/19/2018] [Indexed: 02/03/2023]
Abstract
OBJECTIVE This study examined whether a history of diabetic ketoacidosis (DKA) is associated with changes in longitudinal cognitive and brain development in young children with type 1 diabetes. RESEARCH DESIGN AND METHODS Cognitive and brain imaging data were analyzed from 144 children with type 1 diabetes, ages 4 to <10 years, who participated in an observational study of the Diabetes Research in Children Network (DirecNet). Participants were grouped according to history of DKA severity (none/mild or moderate/severe). Each participant had unsedated MRI scans and cognitive testing at baseline and 18 months. RESULTS In 48 of 51 subjects, the DKA event occurred at the time of onset, at an average of 2.9 years before study entry. The moderate/severe DKA group gained more total and regional white and gray matter volume over the observed 18 months compared with the none/mild group. When matched by age at time of enrollment and average HbA1c during the 18-month interval, participants who had a history of moderate/severe DKA compared with none/mild DKA were observed to have significantly lower Full Scale Intelligence Quotient scores and cognitive performance on the Detectability and Commission subtests of the Conners' Continuous Performance Test II and the Dot Locations subtest of the Children's Memory Scale. CONCLUSIONS A single episode of moderate/severe DKA in young children at diagnosis is associated with lower cognitive scores and altered brain growth. Further studies are needed to assess whether earlier diagnosis of type 1 diabetes and prevention of DKA may reduce the long-term effect of ketoacidosis on the developing brain.
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Affiliation(s)
- Tandy Aye
- Division of Pediatric Endocrinology, Department of Pediatrics, Stanford University School of Medicine, Stanford, CA
| | - Paul K Mazaika
- Center for Interdisciplinary Brain Sciences Research, Department of Psychiatry and Behavioral Sciences, Stanford University School of Medicine, Stanford, CA
| | - Nelly Mauras
- Division of Pediatric Endocrinology, Department of Pediatrics, Nemours Children's Health System, Jacksonville, FL
| | - Matthew J Marzelli
- Center for Interdisciplinary Brain Sciences Research, Department of Psychiatry and Behavioral Sciences, Stanford University School of Medicine, Stanford, CA
| | - Hanyang Shen
- Center for Interdisciplinary Brain Sciences Research, Department of Psychiatry and Behavioral Sciences, Stanford University School of Medicine, Stanford, CA
| | - Tamara Hershey
- Departments of Psychiatry and Radiology, Washington University School of Medicine, St. Louis, MO
| | - Allison Cato
- Division of Neurology, Department of Pediatrics, Nemours Children's Health System, Jacksonville, FL
| | - Stuart A Weinzimer
- Section of Pediatric Endocrinology, Department of Pediatrics, Yale University, New Haven, CT
| | - Neil H White
- Division of Endocrinology and Diabetes, Department of Pediatrics, Washington University School of Medicine, St. Louis, MO
| | - Eva Tsalikian
- Division of Endocrinology and Diabetes, Stead Family Department of Pediatrics, University of Iowa, Iowa City, IA
| | - Booil Jo
- Center for Interdisciplinary Brain Sciences Research, Department of Psychiatry and Behavioral Sciences, Stanford University School of Medicine, Stanford, CA
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Triolo TM, Fouts A, Pyle L, Yu L, Gottlieb PA, Steck AK, Greenbaum CJ, Atkinson M, Baidal D, Battaglia M, Becker D, Bingley P, Bosi E, Buckner J, Clements M, Colman P, DiMeglio L, Gitelman S, Goland R, Gottlieb P, Herold K, Knip M, Krischer J, Lernmark A, Moore W, Moran A, Muir A, Palmer J, Peakman M, Philipson L, Raskin P, Redondo M, Rodriguez H, Russell W, Spain L, Schatz D, Sosenko J, Wentworth J, Wherrett D, Wilson D, Winter W, Ziegler A, Anderson M, Antinozzi P, Benoist C, Blum J, Bourcier K, Chase P, Clare-Salzler M, Clynes R, Eisenbarth G, Fathman C, Grave G, Hering B, Insel R, Kaufman F, Kay T, Leschek E, Mahon J, Marks J, Nanto-Salonen K, Nepom G, Orban T, Parkman R, Pescovitz M, Peyman J, Pugliese A, Roep B, Roncarolo M, Savage P, Simell O, Sherwin R, Siegelman M, Skyler J, Steck A, Thomas J, Trucco M, Wagner J, Krischer JP, Leschek E, Rafkin L, Bourcier K, Cowie C, Foulkes M, Insel R, Krause-Steinrauf H, Lachin JM, Malozowski S, Peyman J, Ridge J, Savage P, Skyler JS, Zafonte SJ, Rafkin L, Sosenko JM, Kenyon NS, Santiago I, Krischer JP, Bundy B, Abbondondolo M, Dixit S, Pasha M, King K, Adcock H, Atterberry L, Fox K, Englert N, Mauras J, Permuy K, Sikes T, Adams T, Berhe B, Guendling L, McLennan L, Paganessi C, Murphy M, Draznin M, Kamboj S, Sheppard V, Lewis L, Coates W, Amado D, Moore G, Babar J, Bedard D, Brenson-Hughes J, Cernich M, Clements R, Duprau S, Goodman L, Hester L, Huerta-Saenz A, Asif I, Karmazin T, Letjen S, Raman D, Morin W, Bestermann E, Morawski J, White A, Brockmyer R, Bays S, Campbell A, Boonstra M, Stapleton N, Stone A, Donoho H, Everett H, Hensley M, Johnson C, Marshall N, Skirvin P, Taylor R, Williams L, Burroughs C, Ray C, Wolverton D, Nickels C, Dothard P, Speiser M, Pellizzari L, Bokor K, Izuora S, Abdelnour P, Cummings S, Cuthbertson D, Paynor M, Leahy M, Riedl S, Shockley R, Saad T, Briones S, Casella C, Herz K, Walsh J, Greening F, Deemer M, Hay S, Hunt N, Sikotra L, Simons D, Karounos R, Oremus L, Dye L, Myers D, Ballard W, Miers R, Eberhard C, Sparks K, Thraikill K, Edwards J, Fowlkes S, Kemp A, Morales L, Holland L, Johnson P, Paul A, Ghatak K, Fiske S, Phelen H, Leyland T, Henderson D, Brenner E, Oppenheimer I, Mamkin C, Moniz C, Clarson M, Lovell A, Peters V, Ford J, Ruelas D, Borut D, Burt M, Jordan S, Castilla P, Flores M, Ruiz L, Hanson J, Green-Blair R, Sheridan K, Garmeson J, Wintergerst G, Pierce A, Omoruyi M, Foster S, Kingery A, Lunsford I, Cervantes T, Parker P, Price J, Urben I, Guillette H, Doughty H, Haydock V, Parker P, Bergman S, Duncum C, Rodda A, Perelman R, Calendo C, Barrera E, Arce-Nunez Y, Geyer S, Martinez M, De la Portilla I, Cardenas L, Garrido M, Villar R, Lorini E, Calandra G, D’Annuzio K, Perri N, Minuto C, Hays B, Rebora R, Callegari O, Ali J, Kramer B, Auble S, Cabrera P, Donohoue R, Fiallo-Scharer M, Hessner P, Wolfgram A, Henderson C, Kansra N, Bettin R, McCuller A, Miller S, Accacha J, Corrigan E, Fiore R, Levine T, Mahoney C, Polychronakos V, Henry M, Gagne H, Starkman M, Fox D, Chin F, Melchionne L, Silverman I, Marshall L, Cerracchio J, Cruz A, Viswanathan J, Heyman K, Wilson S, Chalew S, Valley S, Layburn A, Lala P, Clesi M, Genet G, Uwaifo A, Charron T, Allerton W, Hsiao B, Cefalu L, Melendez-Ramirez R, Richards C, Alleyn E, Gustafson M, Lizanna J, Wahlen S, Aleiwe M, Hansen H, Wahlen C, Karges C, Levy A, Bonaccorso R, Rapaport Y, Tomer D, Chia M, Goldis L, Iazzetti M, Klein C, Levister L, Waldman E, Keaton N, Wallach M, Regelmann Z, Antal M, Aranda C, Reynholds A, Vinik P, Barlow M, Bourcier M, Nevoret J, Couper S, Kinderman A, Beresford N, Thalagne H, Roper J, Gibbons J, Hill S, Balleaut C, Brennan J, Ellis-Gage L, Fear T, Gray L, Law P, Jones C, McNerney L, Pointer N, Price K, Few D, Tomlinson N, Leech D, Wake C, Owens M, Burns J, Leinbach A, Wotherspoon A, Murray K, Short G, Curry S, Kelsey J, Lawson J, Porter S, Stevens E, Thomson S, Winship L, Liu S, Wynn E, Wiltshire J, Krebs P, Cresswell H, Faherty C, Ross L, Denvir J, Drew T, Randell P, Mansell S, Lloyd J, Bell S, Butler Y, Hooton H, Navarra A, Roper G, Babington L, Crate H, Cripps A, Ledlie C, Moulds R, Malloy J, Norton B, Petrova O, Silkstone C, Smith K, Ghai M, Murray V, Viswanathan M, Henegan O, Kawadry J, Olson L, Maddox K, Patterson T, Ahmad B, Flores D, Domek S, Domek K, Copeland M, George J, Less T, Davis M, Short A, Martin J, Dwarakanathan P, O’Donnell B, Boerner L, Larson M, Phillips M, Rendell K, Larson C, Smith K, Zebrowski L, Kuechenmeister M, Miller J, Thevarayapillai M, Daniels H, Speer N, Forghani R, Quintana C, Reh A, Bhangoo P, Desrosiers L, Ireland T, Misla C, Milliot E, Torres S, Wells J, Villar M, Yu D, Berry D, Cook J, Soder A, Powell M, Ng M, Morrison Z, Moore M, Haslam M, Lawson B, Bradley J, Courtney C, Richardson C, Watson E, Keely D, DeCurtis M, Vaccarcello-Cruz Z, Torres K, Muller S, Sandberg H, Hsiang B, Joy D, McCormick A, Powell H, Jones J, Bell S, Hargadon S, Hudson M, Kummer S, Nguyen T, Sauder E, Sutton K, Gensel R, 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Manning G, Hendry B, Taylor S, Jones W, Strader M, Bencomo T, Bailey L, Bedolla C, Roldan C, Moudiotis B, Vaidya C, Anning S, Bunce S, Estcourt E, Folland E, Gordon C, Harrill J, Ireland J, Piper L, Scaife K, Sutton S, Wilkins M, Costelloe J, Palmer L, Casas C, Miller M, Burgard C, Erickson J, Hallanger-Johnson P, Clark W, Taylor A, Lafferty S, Gillett C, Nolan M, Pathak L, Sondrol T, Hjelle S, Hafner J, Kotrba R, Hendrickson A, Cemeroglu T, Symington M, Daniel Y, Appiagyei-Dankah D, Postellon M, Racine L, Kleis K, Barnes S, Godwin H, McCullough K, Shaheen G, Buck L, Noel M, Warren S, Weber S, Parker I, Gillespie B, Nelson C, Frost J, Amrhein E, Moreland A, Hayes J, Peggram J, Aisenberg M, Riordan J, Zasa E, Cummings K, Scott T, Pinto A, Mokashi K, McAssey E, Helden P, Hammond L, Dinning S, Rahman S, Ray C, Dimicri S, Guppy H, Nielsen C, Vogel C, Ariza L, Morales Y, Chang R, Gabbay L, Ambrocio L, Manley R, Nemery W, Charlton P, Smith L, Kerr B, Steindel-Kopp M, Alamaguer D, Liljenquist G, Browning T, Coughenour M, Sulk E, Tsalikan M, Tansey J, Cabbage N. Identical and Nonidentical Twins: Risk and Factors Involved in Development of Islet Autoimmunity and Type 1 Diabetes. Diabetes Care 2019; 42:192-199. [PMID: 30061316 PMCID: PMC6341285 DOI: 10.2337/dc18-0288] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/07/2018] [Accepted: 06/28/2018] [Indexed: 02/03/2023]
Abstract
OBJECTIVE There are variable reports of risk of concordance for progression to islet autoantibodies and type 1 diabetes in identical twins after one twin is diagnosed. We examined development of positive autoantibodies and type 1 diabetes and the effects of genetic factors and common environment on autoantibody positivity in identical twins, nonidentical twins, and full siblings. RESEARCH DESIGN AND METHODS Subjects from the TrialNet Pathway to Prevention Study (N = 48,026) were screened from 2004 to 2015 for islet autoantibodies (GAD antibody [GADA], insulinoma-associated antigen 2 [IA-2A], and autoantibodies against insulin [IAA]). Of these subjects, 17,226 (157 identical twins, 283 nonidentical twins, and 16,786 full siblings) were followed for autoantibody positivity or type 1 diabetes for a median of 2.1 years. RESULTS At screening, identical twins were more likely to have positive GADA, IA-2A, and IAA than nonidentical twins or full siblings (all P < 0.0001). Younger age, male sex, and genetic factors were significant factors for expression of IA-2A, IAA, one or more positive autoantibodies, and two or more positive autoantibodies (all P ≤ 0.03). Initially autoantibody-positive identical twins had a 69% risk of diabetes by 3 years compared with 1.5% for initially autoantibody-negative identical twins. In nonidentical twins, type 1 diabetes risk by 3 years was 72% for initially multiple autoantibody-positive, 13% for single autoantibody-positive, and 0% for initially autoantibody-negative nonidentical twins. Full siblings had a 3-year type 1 diabetes risk of 47% for multiple autoantibody-positive, 12% for single autoantibody-positive, and 0.5% for initially autoantibody-negative subjects. CONCLUSIONS Risk of type 1 diabetes at 3 years is high for initially multiple and single autoantibody-positive identical twins and multiple autoantibody-positive nonidentical twins. Genetic predisposition, age, and male sex are significant risk factors for development of positive autoantibodies in twins.
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Affiliation(s)
- Taylor M. Triolo
- Barbara Davis Center for Diabetes, University of Colorado School of Medicine, Aurora, CO
| | - Alexandra Fouts
- Barbara Davis Center for Diabetes, University of Colorado School of Medicine, Aurora, CO
| | - Laura Pyle
- Department of Pediatrics, University of Colorado Anschutz Medical Campus, Aurora, CO
| | - Liping Yu
- Barbara Davis Center for Diabetes, University of Colorado School of Medicine, Aurora, CO
| | - Peter A. Gottlieb
- Barbara Davis Center for Diabetes, University of Colorado School of Medicine, Aurora, CO
| | - Andrea K. Steck
- Barbara Davis Center for Diabetes, University of Colorado School of Medicine, Aurora, CO
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Heyman MB, Weiss P, Boyer D, Fussell J, Imundo L, Aye T, Jarjour IT, Spicer R, Bale J. Challenges of Funding Pediatric Fellowship Programs-Invited Commentary from the Council of Pediatric Subspecialties. J Pediatr 2019; 204:4-6.e1. [PMID: 30579474 DOI: 10.1016/j.jpeds.2018.10.006] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/03/2018] [Accepted: 10/03/2018] [Indexed: 11/26/2022]
Affiliation(s)
- Melvin B Heyman
- Department of Pediatrics, University of California, San Francisco, San Francisco, CA.
| | - Pnina Weiss
- Department of Pediatrics, Yale University, New Haven, CT
| | - Debra Boyer
- Department of Pediatrics, Boston Children's Hospital, Boston, MA
| | - Jill Fussell
- Department of Pediatrics, University of Arkansas, Little Rock, AZ
| | - Lisa Imundo
- Department of Pediatrics, Columbia University, New York, NY
| | - Tandy Aye
- Department of Pediatrics, Stanford University, Stanford, CA
| | - Imad T Jarjour
- Department of Pediatrics, Baylor College of Medicine, Houston, TX
| | - Robert Spicer
- Department of Pediatrics, Children's Hospital, Omaha, NB
| | - James Bale
- Department of Pediatrics, University of Utah, Salt Lake City, UT
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Espinoza O, Frank E, Liu J, Perry J, Pyle R, Rigby A, Riley K, Soto A, Gitelman S, Adi S, Anderson M, Berhel A, Breen K, Fraser K, Gerard-Gonzalez A, Jossan P, Lustig R, Moassesfar S, Mugg A, Ng D, Prahalod P, Rangel-Lugo M, Sanda S, Tarkoff J, Torok C, Wesch R, Aslan I, Buchanan J, Cordier J, Hamilton C, Hawkins L, Ho T, Jain A, Ko K, Lee T, Phelps S, Rosenthal S, Sahakitrungruang T, Stehl L, Taylor L, Wertz M, Wong J, Philipson L, Briars R, Devine N, Littlejohn E, Grant T, Gottlieb P, Klingensmith G, Steck A, Alkanani A, Bautista K, Bedoy R, Blau A, Burke B, Cory L, Dang M, Fitzgerald-Miller L, Fouts A, Gage V, Garg S, Gesauldo P, Gutin R, Hayes C, Hoffman M, Ketchum K, Logsden-Sackett N, Maahs D, Messer L, Meyers L, Michels A, Peacock S, Rewers M, Rodriguez P, Sepulbeda F, Sippl R, Steck A, Taki I, Tran BK, Tran T, Wadwa RP, Zeitler P, Barker J, Barry S, Birks L, Bomsburger L, Bookert T, Briggs L, Burdick P, Cabrera R, Chase P, Cobry E, Conley A, Cook G, Daniels J, DiDomenico D, Eckert J, Ehler A, Eisenbarth G, Fain P, Fiallo-Scharer R, Frank N, Goettle H, Haarhues M, Harris S, Horton L, Hutton J, Jeffrrey J, Jenison R, Jones K, Kastelic W, King MA, Lehr D, Lungaro J, Mason K, Maurer H, Nguyen L, Proto A, Realsen J, Schmitt K, Schwartz M, Skovgaard S, Smith J, Vanderwel B, Voelmle M, Wagner R, Wallace A, Walravens P, Weiner L, Westerhoff B, Westfall E, Widmer K, Wright H, Schatz D, Abraham A, Atkinson M, Cintron M, Clare-Salzler M, Ferguson J, Haller M, Hosford J, Mancini D, Rohrs H, Silverstein J, Thomas J, Winter W, Cole G, Cook R, Coy R, Hicks E, Lewis N, Marks J, Pugliese A, Blaschke C, Matheson D, Sanders-Branca N, Sosenko J, Arazo L, Arce R, Cisneros M, Sabbag S, Moran A, Gibson C, Fife B, Hering B, Kwong C, Leschyshyn J, Nathan B, Pappenfus B, Street A, Boes MA, Eck SP, Finney L, Fischer TA, Martin A, Muzamhindo CJ, Rhodes M, Smith J, Wagner J, Wood B, Becker D, Delallo K, Diaz A, Elnyczky B, Libman I, Pasek B, Riley K, Trucco M, Copemen B, Gwynn D, Toledo F, Rodriguez H, Bollepalli S, Diamond F, Eyth E, Henson D, Lenz A, Shulman D, Raskin P, Adhikari S, Dickson B, Dunnigan E, Lingvay I, Pruneda L, Ramos-Roman M, Raskin P, Rhee C, Richard J, Siegelman M, Sturges D, Sumpter K, White P, Alford M, Arthur J, Aviles-Santa ML, Cordova E, Davis R, Fernandez S, Fordan S, Hardin T, Jacobs A, Kaloyanova P, Lukacova-Zib I, Mirfakhraee S, Mohan A, Noto H, Smith O, Torres N, Wherrett D, Balmer D, Eisel L, Kovalakovska R, Mehan M, Sultan F, Ahenkorah B, Cevallos J, Razack N, Ricci MJ, Rhode A, Srikandarajah M, Steger R, Russell WE, Black M, Brendle F, Brown A, Moore D, Pittel E, Robertson A, Shannon A, Thomas JW, Herold K, Feldman L, Sherwin R, Tamborlane W, Weinzimer S, Toppari J, Kallio T, Kärkkäinen M, Mäntymäki E, Niininen T, Nurmi B, Rajala P, Romo M, Suomenrinne S, Näntö-Salonen K, Simell O, Simell T, Bosi E, Battaglia M, Bianconi E, Bonfanti R, Grogan P, Laurenzi A, Martinenghi S, Meschi F, Pastore M, Falqui L, Muscato MT, Viscardi M, Castleden H, Farthing N, Loud S, Matthews C, McGhee J, Morgan A, Pollitt J, Elliot-Jones R, Wheaton C, Knip M, Siljander H, Suomalainen H, Colman P, Healy F, Mesfin S, Redl L, Wentworth J, Willis J, Farley M, Harrison L, Perry C, Williams F, Mayo A, Paxton J, Thompson V, Volin L, Fenton C, Carr L, Lemon E, Swank M, Luidens M, Salgam M, Sharma V, Schade D, King C, Carano R, Heiden J, Means N, Holman L, Thomas I, Madrigal D, Muth T, Martin C, Plunkett C, Ramm C, Auchus R, Lane W, Avots E, Buford M, Hale C, Hoyle J, Lane B, Muir A, Shuler S, Raviele N, Ivie E, Jenkins M, Lindsley K, Hansen I, Fadoju D, Felner E, Bode B, Hosey R, Sax J, Jefferies C, Mannering S, Prentis R, She J, Stachura M, Hopkins D, Williams J, Steed L, Asatapova E, Nunez S, Knight S, Dixon P, Ching J, Donner T, Longnecker S, Abel K, Arcara K, Blackman S, Clark L, Cooke D, Plotnick L, Levin P, Bromberger L, Klein K, Sadurska K, Allen C, Michaud D, Snodgrass H, Burghen G, Chatha S, Clark C, Silverberg J, Wittmer C, Gardner J, LeBoeuf C, Bell P, McGlore O, Tennet H, Alba N, Carroll M, Baert L, Beaton H, Cordell E, Haynes A, Reed C, Lichter K, McCarthy P, McCarthy S, Monchamp T, Roach J, Manies S, Gunville F, Marosok L, Nelson T, Ackerman K, Rudolph J, Stewart M, McCormick K, May S, Falls T, Barrett T, Dale K, Makusha L, McTernana C, Penny-Thomas K, Sullivan K, Narendran P, Robbie J, Smith D, Christensen R, Koehler B, Royal C, Arthur T, Houser H, Renaldi J, Watsen S, Wu P, Lyons L, House B, Yu J, Holt H, Nation M, Vickers C, Watling R, Heptulla R, Trast J, Agarwal C, Newell D, Katikaneni R, Gardner C, Del Rio A, Logan A, Collier H, Rishton C, Whalley G, Ali A, Ramtoola S, Quattrin T, Mastrandea L, House A, Ecker M, Huang C, Gougeon C, Ho J, Pacuad D, Dunger D, May J, O’Brien C, Acerini C, Salgin B, Thankamony A, Williams R, Buse J, Fuller G, Duclos M, Tricome J, Brown H, Pittard D, Bowlby D, Blue A, Headley T, Bendre S, Lewis K, Sutphin K, Soloranzo C, Puskaric J, Madison H, Rincon M, Carlucci M, Shridharani R, Rusk B, Tessman E, Huffman D, Abrams H, Biederman B, Jones M, Leathers V, Brickman W, Petrie P, Zimmerman D, Howard J, Miller L, Alemzadeh R, Mihailescu D, Melgozza-Walker R, Abdulla N, Boucher-Berry C, Ize-Ludlow D, Levy R, Swenson Brousell C, Scott R, Heenan H, Lunt H, Kendall D, Willis J, Darlow B, Crimmins N, Edler D, Weis T, Schultz C, Rogers D, Latham D, Mawhorter C, Switzer C, Spencer W, Konstantnopoulus P, Broder S, Klein J, Bachrach B, Gardner M, Eichelberger D, Knight L, Szadek L, Welnick G, Thompson B, Hoffman R, Revell A, Cherko J, Carter K, Gilson E, Haines J, Arthur G, Bowen B, Zipf W, Graves P, Lozano R, Seiple D, Spicer K, Chang A, Fregosi J, Harbinson J, Paulson C, Stalters S, Wright P, Zlock D, Freeth A, Victory J, Maheshwari H, Maheshwari A, Holmstrom T, Bueno J, Arguello R, Ahern J, Noreika L, Watson V, Hourse S, Breyer P, Kissel C, Nicholson Y, Pfeifer M, Almazan S, Bajaj J, Quinn M, Funk K, McCance J, Moreno E, Veintimilla R, Wells A, Cook J, Trunnel S, Transue D, Surhigh J, Bezzaire D, Moltz K, Zacharski E, Henske J, Desai S, Frizelis K, Khan F, Sjoberg R, Allen K, Manning P, Hendry G, Taylor B, Jones S, Couch R, Danchak R, Lieberman D, Strader W, Bencomo M, Bailey T, Bedolla L, Roldan C, Moudiotis C, Vaidya B, Anning C, Bunce S, Estcourt S, Folland E, Gordon E, Harrill C, Ireland J, Piper J, Scaife L, Sutton K, Wilkins S, Costelloe M, Palmer J, Casas L, Miller C, Burgard M, Erickson C, Hallanger-Johnson J, Clark P, Taylor W, Galgani J, Banerjee S, Banda C, McEowen D, Kinman R, Lafferty A, Gillett S, Nolan C, Pathak M, Sondrol L, Hjelle T, Hafner S, Kotrba J, Hendrickson R, Cemeroglu A, Symington T, Daniel M, Appiagyei-Dankah Y, Postellon D, Racine M, Kleis L, Barnes K, Godwin S, McCullough H, Shaheen K, Buck G, Noel L, Warren M, Weber S, Parker S, Gillespie I, Nelson B, Frost C, Amrhein J, Moreland E, Hayes A, Peggram J, Aisenberg J, Riordan M, Zasa J, Cummings E, Scott K, Pinto T, Mokashi A, McAssey K, Helden E, Hammond P, Dinning L, Rahman S, Ray S, Dimicri C, Guppy S, Nielsen H, Vogel C, Ariza C, Morales L, Chang Y, Gabbay R, Ambrocio L, Manley L, Nemery R, Charlton W, Smith P, Kerr L, Steindel-Kopp B, Alamaguer M, Tabisola-Nuesca E, Pendersen A, Larson N, Cooper-Olviver H, Chan D, Fitz-Patrick D, Carreira T, Park Y, Ruhaak R, Liljenquist D. A Type 1 Diabetes Genetic Risk Score Predicts Progression of Islet Autoimmunity and Development of Type 1 Diabetes in Individuals at Risk. Diabetes Care 2018; 41:1887-1894. [PMID: 30002199 PMCID: PMC6105323 DOI: 10.2337/dc18-0087] [Citation(s) in RCA: 86] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/11/2018] [Accepted: 06/06/2018] [Indexed: 02/03/2023]
Abstract
OBJECTIVE We tested the ability of a type 1 diabetes (T1D) genetic risk score (GRS) to predict progression of islet autoimmunity and T1D in at-risk individuals. RESEARCH DESIGN AND METHODS We studied the 1,244 TrialNet Pathway to Prevention study participants (T1D patients' relatives without diabetes and with one or more positive autoantibodies) who were genotyped with Illumina ImmunoChip (median [range] age at initial autoantibody determination 11.1 years [1.2-51.8], 48% male, 80.5% non-Hispanic white, median follow-up 5.4 years). Of 291 participants with a single positive autoantibody at screening, 157 converted to multiple autoantibody positivity and 55 developed diabetes. Of 953 participants with multiple positive autoantibodies at screening, 419 developed diabetes. We calculated the T1D GRS from 30 T1D-associated single nucleotide polymorphisms. We used multivariable Cox regression models, time-dependent receiver operating characteristic curves, and area under the curve (AUC) measures to evaluate prognostic utility of T1D GRS, age, sex, Diabetes Prevention Trial-Type 1 (DPT-1) Risk Score, positive autoantibody number or type, HLA DR3/DR4-DQ8 status, and race/ethnicity. We used recursive partitioning analyses to identify cut points in continuous variables. RESULTS Higher T1D GRS significantly increased the rate of progression to T1D adjusting for DPT-1 Risk Score, age, number of positive autoantibodies, sex, and ethnicity (hazard ratio [HR] 1.29 for a 0.05 increase, 95% CI 1.06-1.6; P = 0.011). Progression to T1D was best predicted by a combined model with GRS, number of positive autoantibodies, DPT-1 Risk Score, and age (7-year time-integrated AUC = 0.79, 5-year AUC = 0.73). Higher GRS was significantly associated with increased progression rate from single to multiple positive autoantibodies after adjusting for age, autoantibody type, ethnicity, and sex (HR 2.27 for GRS >0.295, 95% CI 1.47-3.51; P = 0.0002). CONCLUSIONS The T1D GRS independently predicts progression to T1D and improves prediction along T1D stages in autoantibody-positive relatives.
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Affiliation(s)
- Maria J. Redondo
- Texas Children’s Hospital, Baylor College of Medicine, Houston, TX
| | | | - Andrea K. Steck
- Barbara Davis Center for Childhood Diabetes, University of Colorado School of Medicine, Aurora, CO
| | - Seth Sharp
- Institute of Biomedical and Clinical Science, University of Exeter, Exeter, U.K
| | - John M. Wentworth
- Walter and Eliza Hall Institute of Medical Research and Royal Melbourne Hospital, Parkville, Victoria, Australia
| | - Michael N. Weedon
- Institute of Biomedical and Clinical Science, University of Exeter, Exeter, U.K
| | | | | | | | | | - Richard A. Oram
- Institute of Biomedical and Clinical Science, University of Exeter, Exeter, U.K
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Mazaika PK, Aye T, Reiss AL, Buckingham BA. Large Changes in Brain Volume Observed in an Asymptomatic Young Child With Type 1 Diabetes. Diabetes Care 2018; 41:1535-1537. [PMID: 29934482 PMCID: PMC6014537 DOI: 10.2337/dc17-2503] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/30/2017] [Accepted: 03/27/2018] [Indexed: 02/03/2023]
Affiliation(s)
- Paul K Mazaika
- Interdisciplinary Brain Sciences Research, Department of Psychiatry and Behavioral Sciences, Stanford University School of Medicine, Stanford, CA
| | - Tandy Aye
- Interdisciplinary Brain Sciences Research, Department of Psychiatry and Behavioral Sciences, Stanford University School of Medicine, Stanford, CA.,Division of Pediatric Endocrinology, Stanford University School of Medicine, Stanford, CA
| | - Allan L Reiss
- Interdisciplinary Brain Sciences Research, Department of Psychiatry and Behavioral Sciences, Stanford University School of Medicine, Stanford, CA.,Division of Pediatric Endocrinology, Stanford University School of Medicine, Stanford, CA.,Department of Radiology, Stanford University School of Medicine, Stanford, CA
| | - Bruce A Buckingham
- Division of Pediatric Endocrinology, Stanford University School of Medicine, Stanford, CA
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Foland-Ross LC, Reiss AL, Mazaika PK, Mauras N, Weinzimer SA, Aye T, Tansey MJ, White NH. Longitudinal assessment of hippocampus structure in children with type 1 diabetes. Pediatr Diabetes 2018; 19:10.1111/pedi.12683. [PMID: 29675980 PMCID: PMC6195484 DOI: 10.1111/pedi.12683] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/21/2017] [Revised: 04/06/2018] [Accepted: 04/16/2018] [Indexed: 01/16/2023] Open
Abstract
The extant literature finds that children with type 1 diabetes mellitus (T1D) experience mild cognitive alterations compared to healthy age-matched controls. The neural basis of these cognitive differences is unclear but may relate in part to the effects of dysglycemia on the developing brain. We investigated longitudinal changes in hippocampus volume in young children with early-onset T1D. Structural magnetic resonance imaging data were acquired from 142 children with T1D and 65 age-matched control subjects (4-10 years of age at study entry) at 2 time points, 18 months apart. The effects of diabetes and glycemic exposure on hippocampal volume and growth were examined. Results indicated that although longitudinal hippocampus growth did not differ between children with T1D and healthy control children, slower growth of the hippocampus was associated with both increased exposure to hyperglycemia (interval HbA1c) and greater glycemic variability (MAGE) in T1D. These observations indicate that the current practice of tolerating some hyperglycemia to minimize the risk of hypoglycemia in young children with T1D may not be optimal for the developing brain. Efforts that continue to assess the factors influencing neural and cognitive development in children with T1D will be critical in minimizing the deleterious effects of diabetes.
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Affiliation(s)
- Lara C Foland-Ross
- Department of Psychiatry and Behavioral Sciences, Center for Interdisciplinary Brain Sciences Research, Stanford University, Stanford, California
| | - Allan L Reiss
- Department of Psychiatry and Behavioral Sciences, Center for Interdisciplinary Brain Sciences Research, Stanford University, Stanford, California
- Department of Pediatrics, Stanford University School of Medicine, Stanford, California
- Department of Radiology, Stanford University School of Medicine, Stanford, California
| | - Paul K Mazaika
- Department of Psychiatry and Behavioral Sciences, Center for Interdisciplinary Brain Sciences Research, Stanford University, Stanford, California
| | - Nelly Mauras
- Pediatric Endocrinology, Nemours Children's Health System, Jacksonville, Florida
| | | | - Tandy Aye
- Department of Psychiatry and Behavioral Sciences, Center for Interdisciplinary Brain Sciences Research, Stanford University, Stanford, California
- Division of Pediatric Endocrinology, Stanford School of Medicine, Stanford, California
| | - Michael J Tansey
- Department of Pediatric Endocrinology, University of Iowa, Iowa City, Iowa
| | - Neil H White
- Department of Pediatrics, Washington University in St. Louis and the St. Louis Children's Hospital, St. Louis, Missouri
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Mink R, Schwartz A, Carraccio C, High P, Dammann C, McGann KA, Kesselheim J, Herman B, Baffa G, Herman B, Turner DA, Fussell J, High P, Hsu D, Stafford D, Aye T, Sauer C, Kesselheim J, Myers A, McGann K, Dammann C, Chess P, Mahan J, Weiss P, Curran M, Schwartz A, Carraccio C, Herman B, Mink R, Havalad V, Pinheiro J, Alderman E, Fuloria M, McCabe ME, Mehta J, Rivas Y, Rosenberg M, Doughty C, Hergenroeder A, Kale A, Lee-Kim Y, Rama JA, Steuber P, Voigt B, Hardy K, Johnston S, Boyer D, Mauras C, Schonwald A, Sharma T, Barron C, Dennehy P, Jacobs ES, Welch J, Kumar D, Mason K, Roizen N, Rose JA, Bokor B, Chapman JI, Frank L, Sami I, Schuette J, Lutes RE, Savelli S, Amirnovin R, Harb R, Kato R, Marzan K, Monzavi R, Vanderbilt D, Doughty L, McAneney C, Rice W, Widdice L, Erenberg F, Gonzalez BE, Adkins D, Green D, Narayan A, Rehder K, Clingenpeel J, Starling S, Karpen HE, Rouster-Stevens K, Bhatia J, Fuqua J, Anders J, Trent M, Ramanathan R, Nicolau Y, Dozor AJ, Kinane TB, Stanley T, Rao AN, Bone M, Camarda L, Heffner V, Kim O, Nocton J, Rabbitt AL, Tower R, Amaya M, Jaroscak J, Kiger J, Macias M, Titus O, Awonuga M, Vogt K, Warwick A, Coury D, Hall M, Letson M, Rose M, Glickstein J, Lusman S, Roskind C, Soren K, Katz J, Siqueira L, Atlas M, Blaufox A, Gottleib B, Meryash D, Vuguin P, Weinstein T, Armsby L, Madison L, Scottoline B, Shereck E, Henry M, Teaford PA, Long S, Varlotta L, Zubrow A, Barlow C, Feldman H, Ganz H, Grimm P, Lee T, Weiner LB, Molle-Rios Z, Slamon N, Guillen U, Miller K, Federman M, Cron R, Hoover W, Simpson T, Winkler M, Harik N, Ross A, Al-Ibrahim O, Carnevale FP, Waz W, Bany-Mohammed F, Kim JH, Printz B, Brook M, Hermiston M, Lawson E, van Schaik S, McQueen A, Booth KVP, Tesher M, Barker J, Friedman S, Mohon R, Sirotnak A, Brancato J, Sayej WN, Maraqa N, Haller M, Stryjewski B, Brophy P, Rahhal R, Reinking B, Volk P, Bryant K, Currie M, Potter K, Falck A, Weiner J, Carney MM, Felt B, Barnes A, Bendel CM, Binstadt B, Carlson K, Garrison C, Moffatt M, Rosen J, Sharma J, Tieves KS, Hsu H, Kugler J, Simonsen K, Fastle RK, Dannaway D, Krishnan S, McGuinn L, Lowe M, Witchel SF, Matheo L, Abell R, Caserta M, Nazarian E, Yussman S, Thomas AD, Hains DS, Talati AJ, Adderson E, Kellogg N, Vasquez M, Allen C, Brion LP, Green M, Journeycake J, Yen K, Quigley R, Blaschke A, Bratton SL, Yost CC, Etheridge SP, Laskey T, Pohl J, Soprano J, Fairchild K, Norwood V, Johnston TA, Klein E, Kronman M, Nanda K, Smith L, Allen D, Frohna JG, Patel N, Estrada C, Fleming GM, Gillam-Krakauer M, Moore P, El Khoury JC, Helderman J, Barretto G, Levasseur K, Johnston L. Creating the Subspecialty Pediatrics Investigator Network. J Pediatr 2018; 192:3-4.e2. [PMID: 29246355 DOI: 10.1016/j.jpeds.2017.09.079] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/28/2017] [Accepted: 09/28/2017] [Indexed: 11/29/2022]
Affiliation(s)
- Richard Mink
- Harbor-UCLA Medical Center and David Geffen School of Medicine at UCLA, Torrance, CA
| | | | | | - Pamela High
- W Alpert Medical School of Brown University, Providence, RI
| | | | | | | | - Bruce Herman
- University of Utah/Primary Children's Hospital, Salt Lake City, UT
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Wadwa RP, Chase HP, Raghinaru D, Buckingham BA, Hramiak I, Maahs DM, Messer L, Ly T, Aye T, Clinton P, Kollman C, Beck RW, Lum J. Ketone production in children with type 1 diabetes, ages 4-14 years, with and without nocturnal insulin pump suspension. Pediatr Diabetes 2017; 18:422-427. [PMID: 27402452 PMCID: PMC5233607 DOI: 10.1111/pedi.12410] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/14/2016] [Revised: 05/12/2016] [Accepted: 06/07/2016] [Indexed: 11/28/2022] Open
Abstract
OBJECTIVE To compare the frequency of elevated morning blood ketone levels according to age in 4-14 year olds with type 1 diabetes following overnight use of an automated low glucose insulin suspension system, or following control nights when the system was not used. RESEARCH DESIGN AND METHODS For 28 children ages 4-9 years and 54 youth ages 10-14 years, elevation of morning blood ketone levels was assessed using the Precision Xtra Ketone meter following 1155 and 2345 nights, respectively. Repeated measures logistic regression models were used to compare age groups for blood ketone level elevation following control nights (system not activated) and following intervention nights with and without insulin suspension. RESULTS Elevated morning blood ketones (≥0.6 mmol/L) were present following 10% of 580 control nights in the 4-9 year olds compared with 2% of 1162 control nights in 10-14 year olds (P < 0.001). Likewise, the frequency was greater following intervention nights in the younger age group (13% of 575 nights vs 2% of 1183 nights, P < 0.001). A longer duration of pump suspension resulted in a higher percentage of mornings with elevated blood ketones in the younger age group (P = 0.002), but not in the older age group (P = 0.63). The presence of elevated morning ketone levels did not progress to ketoacidosis in any subject. CONCLUSIONS Elevated morning blood ketones are more common in younger children with type 1 diabetes with or without nocturnal insulin suspension. Care providers need to be aware of the differences in ketogenesis in younger age children relative to various clinical situations.
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Affiliation(s)
- R Paul Wadwa
- Barbara Davis Center for Childhood Diabetes, University of Colorado School of Medicine, Aurora, Colorado, USA
| | - H Peter Chase
- Barbara Davis Center for Childhood Diabetes, University of Colorado School of Medicine, Aurora, Colorado, USA
| | - Dan Raghinaru
- Jaeb Center for Health Research, Tampa, Florida, USA
| | - Bruce A Buckingham
- Division of Pediatric Endocrinology and Diabetes, Stanford University, Stanford, California, USA
| | - Irene Hramiak
- Division of Endocrinology & Metabolism, St. Joseph's Health Care, London, ON, Canada
| | - David M Maahs
- Barbara Davis Center for Childhood Diabetes, University of Colorado School of Medicine, Aurora, Colorado, USA
| | - Laurel Messer
- Barbara Davis Center for Childhood Diabetes, University of Colorado School of Medicine, Aurora, Colorado, USA
| | - Trang Ly
- Division of Pediatric Endocrinology and Diabetes, Stanford University, Stanford, California, USA
| | - Tandy Aye
- Division of Pediatric Endocrinology and Diabetes, Stanford University, Stanford, California, USA
| | - Paula Clinton
- Division of Pediatric Endocrinology and Diabetes, Stanford University, Stanford, California, USA
| | - Craig Kollman
- Jaeb Center for Health Research, Tampa, Florida, USA
| | - Roy W Beck
- Jaeb Center for Health Research, Tampa, Florida, USA
| | - John Lum
- Jaeb Center for Health Research, Tampa, Florida, USA
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Calhoun PM, Buckingham BA, Maahs DM, Hramiak I, Wilson DM, Aye T, Clinton P, Chase P, Messer L, Kollman C, Beck RW, Lum J. Efficacy of an Overnight Predictive Low-Glucose Suspend System in Relation to Hypoglycemia Risk Factors in Youth and Adults With Type 1 Diabetes. J Diabetes Sci Technol 2016; 10:1216-1221. [PMID: 27207890 PMCID: PMC5094319 DOI: 10.1177/1932296816645119] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
BACKGROUND We developed a system to suspend insulin pump delivery overnight when the glucose trend predicts hypoglycemia. This predictive low-glucose suspend (PLGS) system substantially reduces nocturnal hypoglycemia without an increase in morning ketosis. Evaluation of hypoglycemia risk factors that could potentially influence the efficacy of the system remains critical for understanding possible problems with the system and identifying patients that may have the greatest benefit when using the system. METHODS The at-home randomized trial consisted of 127 study participants with hemoglobin A1c (A1C) of ≤8.5% (mmol/mol) for patients aged 4-14 years and ≤8.0% for patient aged 15-45 years. Factors assessed included age, gender, A1C, diabetes duration, daily percentage basal insulin, total daily dose of insulin (units/kg-day), bedtime BG, bedtime snack, insulin on board, continuous glucose monitor (CGM) rate of change (ROC), day of the week, time system activated, daytime exercise intensity, and daytime CGM-measured hypoglycemia. RESULTS The PLGS system was effective in preventing hypoglycemia for each factor subgroup. There was no evidence that the PLGS system was more or less effective in preventing hypoglycemia in any one subgroup compared with the other subgroups based on that factor. In addition, the effect of the system on overnight hyperglycemia did not differ in subgroups. CONCLUSIONS The PLGS system tested in this study effectively reduced hypoglycemia without a meaningful increase in hyperglycemia across a variety of factors.
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Affiliation(s)
| | - Bruce A Buckingham
- Department of Pediatrics, Division of Pediatric Endocrinology and Diabetes, Stanford University School of Medicine, Stanford, CA, USA
| | - David M Maahs
- Barbara Davis Center for Childhood Diabetes, University of Colorado School of Medicine, Aurora CO, USA
| | | | - Darrell M Wilson
- Department of Pediatrics, Division of Pediatric Endocrinology and Diabetes, Stanford University School of Medicine, Stanford, CA, USA
| | - Tandy Aye
- Department of Pediatrics, Division of Pediatric Endocrinology and Diabetes, Stanford University School of Medicine, Stanford, CA, USA
| | - Paula Clinton
- Department of Pediatrics, Division of Pediatric Endocrinology and Diabetes, Stanford University School of Medicine, Stanford, CA, USA
| | - Peter Chase
- Barbara Davis Center for Childhood Diabetes, University of Colorado School of Medicine, Aurora CO, USA
| | - Laurel Messer
- Barbara Davis Center for Childhood Diabetes, University of Colorado School of Medicine, Aurora CO, USA
| | | | - Roy W Beck
- Jaeb Center for Health Research, Tampa, FL, USA
| | - John Lum
- Jaeb Center for Health Research, Tampa, FL, USA
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DiMeglio LA, Cheng P, Beck RW, Kollman C, Ruedy KJ, Slover R, Aye T, Weinzimer SA, Bremer AA, Buckingham B. Changes in beta cell function during the proximate post-diagnosis period in persons with type 1 diabetes. Pediatr Diabetes 2016; 17:237-43. [PMID: 25720763 PMCID: PMC4551616 DOI: 10.1111/pedi.12271] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/03/2014] [Revised: 02/02/2015] [Accepted: 02/05/2015] [Indexed: 12/16/2022] Open
Abstract
OBJECTIVE Prior studies examining beta-cell preservation in type 1 diabetes have predominantly assessed stimulated C-peptide concentrations approximately 10 wk after diagnosis. We examined whether earlier assessments might aid in prediction of beta cell function over time. METHODS Using data from a multi-center randomized trial assessing the effect of intensive diabetes management initiated within 1 wk of diagnosis, we assessed which clinical factors predicted 90-min mixed-meal tolerance test (MMTT) stimulated C-peptide values obtained 2 and 6 wk after diagnosis. We also studied associations of these factors with C-peptide values at 1- and 2-year post-diagnosis. Data from intervention and control groups were pooled. RESULTS Among 67 study participants (mean age 13.3 ± 5.7 yr, range 7.8-45.7 yr) in multivariable analyses, C-peptide increased from baseline to 2 wks and then 6 wk. C-peptide levels at these times were significantly correlated with 1- and 2-yr C-peptide concentrations (all p < 0.001), with the strongest observed associations between 6-wk C-peptide and the 1- and 2-yr values (r = 0.66 and r = 0.61, respectively). In multivariable analyses, greater baseline and 6-wk C-peptide, and older age independently predicted greater 1- and 2-yr C-peptide concentrations. CONCLUSIONS C-peptide assessments close to diagnosis were predictive of subsequent C-peptide production. Our data demonstrate a clear increase in C-peptide over the initial 6 wk after diabetes diagnosis followed by a plateau. Our data do not suggest that MMTT assessments performed closer to diagnosis than 6 wk would improve prediction of subsequent residual beta cell function.
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Affiliation(s)
- Linda A. DiMeglio
- Department of Pediatrics, Section of Pediatric Endocrinology/Diabetology, Indiana University, Riley Hospital for Children, Indianapolis, Indiana
| | | | - Roy W. Beck
- Jaeb Center for Health Research, Tampa, Florida
| | | | | | - Robert Slover
- Barbara Davis Center for Childhood Diabetes, University of Colorado School of Medicine, Aurora, Colorado
| | - Tandy Aye
- Pediatric Endocrinology, Stanford University, Stanford, California
| | | | - Andrew A. Bremer
- Division of Pediatric Endocrinology, Vanderbilt University Medical Center, Nashville, Tennessee
| | - Bruce Buckingham
- Pediatric Endocrinology, Stanford University, Stanford, California
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Mazaika PK, Weinzimer SA, Mauras N, Buckingham B, White NH, Tsalikian E, Hershey T, Cato A, Aye T, Fox L, Wilson DM, Tansey MJ, Tamborlane W, Peng D, Raman M, Marzelli M, Reiss AL. Variations in Brain Volume and Growth in Young Children With Type 1 Diabetes. Diabetes 2016; 65:476-85. [PMID: 26512024 PMCID: PMC4747456 DOI: 10.2337/db15-1242] [Citation(s) in RCA: 52] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/03/2015] [Accepted: 10/17/2015] [Indexed: 12/11/2022]
Abstract
Early-onset type 1 diabetes may affect the developing brain during a critical window of rapid brain maturation. Structural MRI was performed on 141 children with diabetes (4-10 years of age at study entry) and 69 age-matched control subjects at two time points spaced 18 months apart. For the children with diabetes, the mean (±SD) HbA1c level was 7.9 ± 0.9% (63 ± 9.8 mmol/mol) at both time points. Relative to control subjects, children with diabetes had significantly less growth of cortical gray matter volume and cortical surface area and significantly less growth of white matter volume throughout the cortex and cerebellum. For the population with diabetes, the change in the blood glucose level at the time of scan across longitudinal time points was negatively correlated with the change in gray and white matter volumes, suggesting that fluctuating glucose levels in children with diabetes may be associated with corresponding fluctuations in brain volume. In addition, measures of hyperglycemia and glycemic variation were significantly negatively correlated with the development of surface curvature. These results demonstrate that early-onset type 1 diabetes has widespread effects on the growth of gray and white matter in children whose blood glucose levels are well within the current treatment guidelines for the management of diabetes.
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Affiliation(s)
- Paul K Mazaika
- Center for Interdisciplinary Brain Sciences Research, Department of Psychiatry and Behavioral Sciences, Stanford University School of Medicine, Stanford, CA
| | - Stuart A Weinzimer
- Department of Pediatrics, Yale University School of Medicine, New Haven, CT
| | - Nelly Mauras
- Department of Pediatrics, Division of Endocrinology, Diabetes and Metabolism, Nemours Children's Health System, Jacksonville, FL
| | - Bruce Buckingham
- Department of Pediatrics, Stanford University School of Medicine, Stanford, CA
| | - Neil H White
- Department of Pediatrics, Washington University in St. Louis School of Medicine, St. Louis, MO
| | - Eva Tsalikian
- Department of Pediatric Endocrinology, The University of Iowa, Iowa City, IA
| | - Tamara Hershey
- Department of Psychiatry, Washington University in St. Louis School of Medicine, St. Louis, MO Department of Radiology, Washington University in St. Louis School of Medicine, St. Louis, MO Department of Neurology, Washington University in St. Louis School of Medicine, St. Louis, MO
| | - Allison Cato
- Division of Neurology, Nemours Children's Health System, Jacksonville, FL
| | - Tandy Aye
- Department of Pediatrics, Stanford University School of Medicine, Stanford, CA
| | - Larry Fox
- Department of Pediatrics, Division of Endocrinology, Diabetes and Metabolism, Nemours Children's Health System, Jacksonville, FL
| | - Darrell M Wilson
- Department of Pediatrics, Stanford University School of Medicine, Stanford, CA
| | - Michael J Tansey
- Department of Pediatric Endocrinology, The University of Iowa, Iowa City, IA
| | - William Tamborlane
- Department of Pediatrics, Yale University School of Medicine, New Haven, CT
| | - Daniel Peng
- Center for Interdisciplinary Brain Sciences Research, Department of Psychiatry and Behavioral Sciences, Stanford University School of Medicine, Stanford, CA
| | - Mira Raman
- Center for Interdisciplinary Brain Sciences Research, Department of Psychiatry and Behavioral Sciences, Stanford University School of Medicine, Stanford, CA
| | - Matthew Marzelli
- Center for Interdisciplinary Brain Sciences Research, Department of Psychiatry and Behavioral Sciences, Stanford University School of Medicine, Stanford, CA Department of Bioengineering, Stanford University School of Medicine, Stanford, CA Department of Radiology, Stanford University School of Medicine, Stanford, CA
| | - Allan L Reiss
- Center for Interdisciplinary Brain Sciences Research, Department of Psychiatry and Behavioral Sciences, Stanford University School of Medicine, Stanford, CA Department of Pediatrics, Stanford University School of Medicine, Stanford, CA Department of Radiology, Stanford University School of Medicine, Stanford, CA
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Buckingham BA, Raghinaru D, Cameron F, Bequette BW, Chase HP, Maahs DM, Slover R, Wadwa RP, Wilson DM, Ly T, Aye T, Hramiak I, Clarson C, Stein R, Gallego PH, Lum J, Sibayan J, Kollman C, Beck RW. Erratum. Predictive Low-Glucose Insulin Suspension Reduces Duration of Nocturnal Hypoglycemia in Children Without Increasing Ketosis. Diabetes Care 2015;38:1197-1204. Diabetes Care 2015; 38:1813. [PMID: 26294776 PMCID: PMC5321240 DOI: 10.2337/dc15-er09] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
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Buckingham BA, Raghinaru D, Cameron F, Bequette BW, Chase HP, Maahs DM, Slover R, Wadwa RP, Wilson DM, Ly T, Aye T, Hramiak I, Clarson C, Stein R, Gallego PH, Lum J, Sibayan J, Kollman C, Beck RW. Predictive Low-Glucose Insulin Suspension Reduces Duration of Nocturnal Hypoglycemia in Children Without Increasing Ketosis. Diabetes Care 2015; 38:1197-204. [PMID: 26049549 PMCID: PMC4477332 DOI: 10.2337/dc14-3053] [Citation(s) in RCA: 92] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/22/2014] [Accepted: 03/06/2015] [Indexed: 02/03/2023]
Abstract
OBJECTIVE Nocturnal hypoglycemia can cause seizures and is a major impediment to tight glycemic control, especially in young children with type 1 diabetes. We conducted an in-home randomized trial to assess the efficacy and safety of a continuous glucose monitor-based overnight predictive low-glucose suspend (PLGS) system. RESEARCH DESIGN AND METHODS In two age-groups of children with type 1 diabetes (11-14 and 4-10 years of age), a 42-night trial for each child was conducted wherein each night was assigned randomly to either having the PLGS system active (intervention night) or inactive (control night). The primary outcome was percent time <70 mg/dL overnight. RESULTS Median time at <70 mg/dL was reduced by 54% from 10.1% on control nights to 4.6% on intervention nights (P < 0.001) in 11-14-year-olds (n = 45) and by 50% from 6.2% to 3.1% (P < 0.001) in 4-10-year-olds (n = 36). Mean overnight glucose was lower on control versus intervention nights in both age-groups (144 ± 18 vs. 152 ± 19 mg/dL [P < 0.001] and 153 ± 14 vs. 160 ± 16 mg/dL [P = 0.004], respectively). Mean morning blood glucose was 159 ± 29 vs. 176 ± 28 mg/dL (P < 0.001) in the 11-14-year-olds and 154 ± 25 vs. 158 ± 22 mg/dL (P = 0.11) in the 4-10-year-olds, respectively. No differences were found between intervention and control in either age-group in morning blood ketosis. CONCLUSIONS In 4-14-year-olds, use of a nocturnal PLGS system can substantially reduce overnight hypoglycemia without an increase in morning ketosis, although overnight mean glucose is slightly higher.
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Affiliation(s)
| | | | | | | | - H Peter Chase
- Barbara Davis Center for Childhood Diabetes, Aurora, CO
| | - David M Maahs
- Barbara Davis Center for Childhood Diabetes, Aurora, CO
| | - Robert Slover
- Barbara Davis Center for Childhood Diabetes, Aurora, CO
| | - R Paul Wadwa
- Barbara Davis Center for Childhood Diabetes, Aurora, CO
| | | | - Trang Ly
- Stanford University, Stanford, CA
| | | | | | - Cheril Clarson
- Children's Hospital, London Health Sciences Centre, London, ON, Canada
| | - Robert Stein
- Children's Hospital, London Health Sciences Centre, London, ON, Canada
| | | | - John Lum
- Jaeb Center for Health Research, Tampa, FL
| | | | | | - Roy W Beck
- Jaeb Center for Health Research, Tampa, FL
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38
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Wilson DM, Calhoun PM, Maahs DM, Chase HP, Messer L, Buckingham BA, Aye T, Clinton PK, Hramiak I, Kollman C, Beck RW. Factors associated with nocturnal hypoglycemia in at-risk adolescents and young adults with type 1 diabetes. Diabetes Technol Ther 2015; 17:385-91. [PMID: 25761202 PMCID: PMC4432491 DOI: 10.1089/dia.2014.0342] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
BACKGROUND Hypoglycemia remains an impediment to good glycemic control, with nocturnal hypoglycemia being particularly dangerous. Information on major contributors to nocturnal hypoglycemia remains critical for understanding and mitigating risk. MATERIALS AND METHODS Continuous glucose monitoring (CGM) data for 855 nights were studied, generated by 45 subjects 15-45 years of age with hemoglobin A1c (HbA1c) levels of ≤8.0% who participated in a larger randomized study. Factors assessed for potential association with nocturnal hypoglycemia (CGM measurement of <60 mg/dL for ≥30 min) included bedtime blood glucose (BG), exercise intensity, bedtime snack, insulin on board, day of the week, previous daytime hypoglycemia, age, gender, HbA1c level, diabetes duration, daily basal insulin, and daily insulin dose. RESULTS Hypoglycemia occurred during 221 of 885 (25%) nights and was more frequent with younger age (P<0.001), lower HbA1c levels (P=0.006), medium/high-intensity exercise during the preceding day (P=0.003), and the occurrence of antecedent daytime hypoglycemia (P=0.001). There was a trend for lower bedtime BG levels to be associated with more frequent nocturnal hypoglycemia (P=0.10). Bedtime snack, before bedtime insulin bolus, weekend versus weekday, gender, and daily basal and bolus insulin were not associated with nocturnal hypoglycemia. CONCLUSIONS Awareness that HbA1c level, exercise, bedtime BG level, and daytime hypoglycemia are all modifiable factors associated with nocturnal hypoglycemia may help patients and providers decrease the risk of hypoglycemia at night. Risk for nocturnal hypoglycemia increased in a linear fashion across the range of variables, with no clear-cut thresholds to guide clinicians or patients for any particular night.
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Affiliation(s)
| | | | - David M. Maahs
- Barbara Davis Center for Childhood Diabetes, Aurora, Colorado
| | - H. Peter Chase
- Barbara Davis Center for Childhood Diabetes, Aurora, Colorado
| | - Laurel Messer
- Barbara Davis Center for Childhood Diabetes, Aurora, Colorado
| | | | - Tandy Aye
- Stanford University, Stanford, California
| | | | | | | | - Roy W. Beck
- Jaeb Center for Health Research, Tampa, Florida
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39
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Mauras N, Mazaika P, Buckingham B, Weinzimer S, White NH, Tsalikian E, Hershey T, Cato A, Cheng P, Kollman C, Beck RW, Ruedy K, Aye T, Fox L, Arbelaez AM, Wilson D, Tansey M, Tamborlane W, Peng D, Marzelli M, Winer KK, Reiss AL. Longitudinal assessment of neuroanatomical and cognitive differences in young children with type 1 diabetes: association with hyperglycemia. Diabetes 2015; 64:1770-9. [PMID: 25488901 PMCID: PMC4407847 DOI: 10.2337/db14-1445] [Citation(s) in RCA: 87] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/18/2014] [Accepted: 12/05/2014] [Indexed: 12/11/2022]
Abstract
Significant regional differences in gray and white matter volume and subtle cognitive differences between young diabetic and nondiabetic children have been observed. Here, we assessed whether these differences change over time and the relation with dysglycemia. Children ages 4 to <10 years with (n = 144) and without (n = 72) type 1 diabetes (T1D) had high-resolution structural MRI and comprehensive neurocognitive tests at baseline and 18 months and continuous glucose monitoring and HbA1c performed quarterly for 18 months. There were no differences in cognitive and executive function scores between groups at 18 months. However, children with diabetes had slower total gray and white matter growth than control subjects. Gray matter regions (left precuneus, right temporal, frontal, and parietal lobes and right medial-frontal cortex) showed lesser growth in diabetes, as did white matter areas (splenium of the corpus callosum, bilateral superior-parietal lobe, bilateral anterior forceps, and inferior-frontal fasciculus). These changes were associated with higher cumulative hyperglycemia and glucose variability but not with hypoglycemia. Young children with T1D have significant differences in total and regional gray and white matter growth in brain regions involved in complex sensorimotor processing and cognition compared with age-matched control subjects over 18 months, suggesting that chronic hyperglycemia may be detrimental to the developing brain.
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Affiliation(s)
- Nelly Mauras
- Division of Endocrinology, Diabetes & Metabolism, Nemours Children's Clinic, Jacksonville, FL
| | - Paul Mazaika
- Center for Interdisciplinary Brain Sciences Research, Department of Psychiatry and Behavioral Sciences, Stanford University School of Medicine, Stanford, CA
| | - Bruce Buckingham
- Department of Pediatrics, Stanford University School of Medicine, Stanford, CA
| | - Stuart Weinzimer
- Department of Pediatrics, Yale University School of Medicine, New Haven, CT
| | - Neil H White
- Department of Pediatrics, Washington University School of Medicine in St. Louis, St. Louis, MO
| | - Eva Tsalikian
- Pediatric Endocrinology, University of Iowa, Iowa City, IA
| | - Tamara Hershey
- Department of Psychiatry, Washington University School of Medicine in St. Louis, St. Louis, MO Department of Radiology, Washington University School of Medicine in St. Louis, St. Louis, MO Department of Neurology, Washington University School of Medicine in St. Louis, St. Louis, MO
| | - Allison Cato
- Division of Neurology, Nemours Children's Clinic, Jacksonville, FL
| | | | | | - Roy W Beck
- Jaeb Center for Health Research, Tampa, FL
| | | | - Tandy Aye
- Department of Pediatrics, Stanford University School of Medicine, Stanford, CA
| | - Larry Fox
- Division of Endocrinology, Diabetes & Metabolism, Nemours Children's Clinic, Jacksonville, FL
| | - Ana Maria Arbelaez
- Department of Pediatrics, Washington University School of Medicine in St. Louis, St. Louis, MO
| | - Darrell Wilson
- Department of Pediatrics, Stanford University School of Medicine, Stanford, CA
| | - Michael Tansey
- Pediatric Endocrinology, University of Iowa, Iowa City, IA
| | - William Tamborlane
- Department of Pediatrics, Yale University School of Medicine, New Haven, CT
| | - Daniel Peng
- Center for Interdisciplinary Brain Sciences Research, Department of Psychiatry and Behavioral Sciences, Stanford University School of Medicine, Stanford, CA
| | - Matthew Marzelli
- Center for Interdisciplinary Brain Sciences Research, Department of Psychiatry and Behavioral Sciences, Stanford University School of Medicine, Stanford, CA Department of Bioengineering, Stanford University School of Medicine, Stanford, CA
| | - Karen K Winer
- Eunice Kennedy Shriver National Institute of Child Health and Human Development, Bethesda, MD
| | - Allan L Reiss
- Center for Interdisciplinary Brain Sciences Research, Department of Psychiatry and Behavioral Sciences, Stanford University School of Medicine, Stanford, CA Department of Pediatrics, Stanford University School of Medicine, Stanford, CA Department of Radiology, Stanford University School of Medicine, Stanford, CA
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Maahs DM, Calhoun P, Buckingham BA, Chase HP, Hramiak I, Lum J, Cameron F, Bequette BW, Aye T, Paul T, Slover R, Wadwa RP, Wilson DM, Kollman C, Beck RW. A randomized trial of a home system to reduce nocturnal hypoglycemia in type 1 diabetes. Diabetes Care 2014; 37:1885-91. [PMID: 24804697 PMCID: PMC4067393 DOI: 10.2337/dc13-2159] [Citation(s) in RCA: 96] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
OBJECTIVE Overnight hypoglycemia occurs frequently in individuals with type 1 diabetes and can result in loss of consciousness, seizure, or even death. We conducted an in-home randomized trial to determine whether nocturnal hypoglycemia could be safely reduced by temporarily suspending pump insulin delivery when hypoglycemia was predicted by an algorithm based on continuous glucose monitoring (CGM) glucose levels. RESEARCH DESIGN AND METHODS Following an initial run-in phase, a 42-night trial was conducted in 45 individuals aged 15-45 years with type 1 diabetes in which each night was assigned randomly to either having the predictive low-glucose suspend system active (intervention night) or inactive (control night). The primary outcome was the proportion of nights in which ≥1 CGM glucose values ≤60 mg/dL occurred. RESULTS Overnight hypoglycemia with at least one CGM value ≤60 mg/dL occurred on 196 of 942 (21%) intervention nights versus 322 of 970 (33%) control nights (odds ratio 0.52 [95% CI 0.43-0.64]; P < 0.001). Median hypoglycemia area under the curve was reduced by 81%, and hypoglycemia lasting >2 h was reduced by 74%. Overnight sensor glucose was >180 mg/dL during 57% of control nights and 59% of intervention nights (P = 0.17), while morning blood glucose was >180 mg/dL following 21% and 27% of nights, respectively (P < 0.001), and >250 mg/dL following 6% and 6%, respectively. Morning ketosis was present <1% of the time in each arm. CONCLUSIONS Use of a nocturnal low-glucose suspend system can substantially reduce overnight hypoglycemia without an increase in morning ketosis.
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Affiliation(s)
- David M Maahs
- Barbara Davis Center for Childhood Diabetes, Aurora, CO
| | | | | | - H Peter Chase
- Barbara Davis Center for Childhood Diabetes, Aurora, CO
| | | | - John Lum
- Jaeb Center for Health Research, Tampa, FL
| | | | | | | | - Terri Paul
- St. Joseph's Health Care, London, Ontario, Canada
| | - Robert Slover
- Barbara Davis Center for Childhood Diabetes, Aurora, CO
| | - R Paul Wadwa
- Barbara Davis Center for Childhood Diabetes, Aurora, CO
| | | | | | - Roy W Beck
- Jaeb Center for Health Research, Tampa, FL
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Barnea-Goraly N, Weinzimer SA, Ruedy KJ, Mauras N, Beck RW, Marzelli MJ, Mazaika PK, Aye T, White NH, Tsalikian E, Fox L, Kollman C, Cheng P, Reiss AL. High success rates of sedation-free brain MRI scanning in young children using simple subject preparation protocols with and without a commercial mock scanner--the Diabetes Research in Children Network (DirecNet) experience. Pediatr Radiol 2014; 44:181-6. [PMID: 24096802 PMCID: PMC3946760 DOI: 10.1007/s00247-013-2798-7] [Citation(s) in RCA: 83] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/15/2013] [Revised: 09/10/2013] [Accepted: 09/12/2013] [Indexed: 01/16/2023]
Abstract
BACKGROUND The ability to lie still in an MRI scanner is essential for obtaining usable image data. To reduce motion, young children are often sedated, adding significant cost and risk. OBJECTIVE We assessed the feasibility of using a simple and affordable behavioral desensitization program to yield high-quality brain MRI scans in sedation-free children. MATERIALS AND METHODS 222 children (4-9.9 years), 147 with type 1 diabetes and 75 age-matched non-diabetic controls, participated in a multi-site study focused on effects of type 1 diabetes on the developing brain. T1-weighted and diffusion-weighted imaging (DWI) MRI scans were performed. All children underwent behavioral training and practice MRI sessions using either a commercial MRI simulator or an inexpensive mock scanner consisting of a toy tunnel, vibrating mat, and video player to simulate the sounds and feel of the MRI scanner. RESULTS 205 children (92.3%), mean age 7 ± 1.7 years had high-quality T1-W scans and 174 (78.4%) had high-quality diffusion-weighted scans after the first scan session. With a second scan session, success rates were 100% and 92.5% for T1-and diffusion-weighted scans, respectively. Success rates did not differ between children with type 1 diabetes and children without diabetes, or between centers using a commercial MRI scan simulator and those using the inexpensive mock scanner. CONCLUSION Behavioral training can lead to a high success rate for obtaining high-quality T1-and diffusion-weighted brain images from a young population without sedation.
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Affiliation(s)
- Naama Barnea-Goraly
- Department of Psychiatry and Behavioral Sciences, Center for Interdisciplinary Brain Sciences Research, Stanford, CA, USA
| | | | - Katrina J. Ruedy
- Jaeb Center for Health Research, 15310 Amberly Drive, Ste. 350, Tampa, FL 33647, USA
| | - Nelly Mauras
- Pediatric Endocrinology, Nemours Children’s Clinic, Jacksonville, FL, USA
| | - Roy W. Beck
- Jaeb Center for Health Research, 15310 Amberly Drive, Ste. 350, Tampa, FL 33647, USA
| | - Matt J. Marzelli
- Department of Psychiatry and Behavioral Sciences, Center for Interdisciplinary Brain Sciences Research, Stanford, CA, USA
| | - Paul K. Mazaika
- Department of Psychiatry and Behavioral Sciences, Center for Interdisciplinary Brain Sciences Research, Stanford, CA, USA
| | - Tandy Aye
- Department of Pediatrics, Stanford University, Stanford, CA, USA
| | - Neil H. White
- Department of Pediatrics, Washington University in St. Louis, St. Louis, MO, USA
| | - Eva Tsalikian
- Pediatric Endocrinology, University of Iowa, Iowa City, IA, USA
| | - Larry Fox
- Pediatric Endocrinology, Nemours Children’s Clinic, Jacksonville, FL, USA
| | - Craig Kollman
- Jaeb Center for Health Research, 15310 Amberly Drive, Ste. 350, Tampa, FL 33647, USA
| | - Peiyao Cheng
- Jaeb Center for Health Research, 15310 Amberly Drive, Ste. 350, Tampa, FL 33647, USA
| | - Allan L. Reiss
- Department of Psychiatry and Behavioral Sciences, Center for Interdisciplinary Brain Sciences Research, Stanford, CA, USA,Department of Pediatrics, Stanford University, Stanford, CA, USA,Department of Radiology, Diabetes Research in Children Network (DirecNet), Stanford University, Stanford, CA, USA
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Barnea-Goraly N, Raman M, Mazaika P, Marzelli M, Hershey T, Weinzimer SA, Aye T, Buckingham B, Mauras N, White NH, Fox LA, Tansey M, Beck RW, Ruedy KJ, Kollman C, Cheng P, Reiss AL. Alterations in white matter structure in young children with type 1 diabetes. Diabetes Care 2014; 37:332-40. [PMID: 24319123 PMCID: PMC3898758 DOI: 10.2337/dc13-1388] [Citation(s) in RCA: 113] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
OBJECTIVE To investigate whether type 1 diabetes affects white matter (WM) structure in a large sample of young children. RESEARCH DESIGN AND METHODS Children (ages 4 to <10 years) with type 1 diabetes (n = 127) and age-matched nondiabetic control subjects (n = 67) had diffusion weighted magnetic resonance imaging scans in this multisite neuroimaging study. Participants with type 1 diabetes were assessed for HbA1c history and lifetime adverse events, and glucose levels were monitored using a continuous glucose monitor (CGM) device and standardized measures of cognition. RESULTS Between-group analysis showed that children with type 1 diabetes had significantly reduced axial diffusivity (AD) in widespread brain regions compared with control subjects. Within the type 1 diabetes group, earlier onset of diabetes was associated with increased radial diffusivity (RD) and longer duration was associated with reduced AD, reduced RD, and increased fractional anisotropy (FA). In addition, HbA1c values were significantly negatively associated with FA values and were positively associated with RD values in widespread brain regions. Significant associations of AD, RD, and FA were found for CGM measures of hyperglycemia and glucose variability but not for hypoglycemia. Finally, we observed a significant association between WM structure and cognitive ability in children with type 1 diabetes but not in control subjects. CONCLUSIONS These results suggest vulnerability of the developing brain in young children to effects of type 1 diabetes associated with chronic hyperglycemia and glucose variability.
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Abstract
BACKGROUND Children with type 1 diabetes (T1D) spend 4-7 h/day in school with very little supervision of their diabetes management. Therefore, families have become more dependent on technology, such as use of real-time continuous glucose monitoring (RT-CGM), to provide increased supervision of their diabetes management. We sought to assess the impact of RT-CGM use in the classroom/school environment. SUBJECTS AND METHODS Children with T1D using RT-CGM, their parents, and teachers completed a questionnaire about RT-CGM in the classroom/school environment. RESULTS The RT-CGM was tolerated well in the classroom/school environment. Seventy percent of parents, 75% of students, and 51% of teachers found RT-CGM useful in the classroom/school environment. The students found the device to be more disruptive than did their parents and teachers. However, all three groups agreed that RT-CGM increased their comfort with diabetes management at school. CONCLUSIONS Our study suggests that RT-CGM is useful and not disruptive in the classroom/school environment. The development of education materials for teachers could further increase its acceptance in the classroom/school environment.
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Affiliation(s)
- Kari Benassi
- Division of Pediatric Endocrinology and Diabetes, Stanford University School of Medicine, Stanford, CA 94305-5208, USA
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Aye T, Barnea-Goraly N, Ambler C, Hoang S, Schleifer K, Park Y, Drobny J, Wilson DM, Reiss AL, Buckingham BA. White matter structural differences in young children with type 1 diabetes: a diffusion tensor imaging study. Diabetes Care 2012; 35:2167-73. [PMID: 22966090 PMCID: PMC3476914 DOI: 10.2337/dc12-0017] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
OBJECTIVE To detect clinical correlates of cognitive abilities and white matter (WM) microstructural changes using diffusion tensor imaging (DTI) in young children with type 1 diabetes. RESEARCH DESIGN AND METHODS Children, ages 3 to <10 years, with type 1 diabetes (n = 22) and age- and sex-matched healthy control subjects (n = 14) completed neurocognitive testing and DTI scans. RESULTS Compared with healthy controls, children with type 1 diabetes had lower axial diffusivity (AD) values (P = 0.046) in the temporal and parietal lobe regions. There were no significant differences between groups in fractional anisotropy and radial diffusivity (RD). Within the diabetes group, there was a significant, positive correlation between time-weighted HbA(1c) and RD (P = 0.028). A higher, time-weighted HbA(1c) value was significantly correlated with lower overall intellectual functioning measured by the full-scale intelligence quotient (P = 0.03). CONCLUSIONS Children with type 1 diabetes had significantly different WM structure (as measured by AD) when compared with controls. In addition, WM structural differences (as measured by RD) were significantly correlated with their HbA(1c) values. Additional studies are needed to determine if WM microstructural differences in young children with type 1 diabetes predict future neurocognitive outcome.
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Affiliation(s)
- Tandy Aye
- Department of Pediatrics, Division of Pediatric Endocrinology and Diabetes, Stanford University School of Medicine, Stanford, CA, USA.
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Aye T. Analysis of the NovoTwist pen needle in comparison with conventional screw-thread needles. J Diabetes Sci Technol 2011; 5:1488-9. [PMID: 22226270 PMCID: PMC3262719 DOI: 10.1177/193229681100500624] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Administration of insulin via a pen device may be advantageous over a vial and syringe system. Hofman and colleagues introduce a new insulin pen needle, the NovoTwist, to simplify injections to a small group of children and adolescents. Their overall preferences and evaluation of the handling of the needle are reported in the study. This new needle has the potential to ease administration of insulin via a pen device that may increase both the use of a pen device and adherence to insulin therapy.
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Affiliation(s)
- Tandy Aye
- Division of Pediatric Endocrinology and Diabetes, Stanford University School of Medicine, Stanford, California 94305-5208, USA.
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Aye T, Reiss AL, Kesler S, Hoang S, Drobny J, Park Y, Schleifer K, Baumgartner H, Wilson DM, Buckingham BA. The feasibility of detecting neuropsychologic and neuroanatomic effects of type 1 diabetes in young children. Diabetes Care 2011; 34:1458-62. [PMID: 21562318 PMCID: PMC3120162 DOI: 10.2337/dc10-2164] [Citation(s) in RCA: 63] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
OBJECTIVE To determine if frequent exposures to hypoglycemia and hyperglycemia during early childhood lead to neurocognitive deficits and changes in brain anatomy. RESEARCH DESIGN AND METHODS In this feasibility, cross-sectional study, young children, aged 3 to 10 years, with type 1 diabetes and age- and sex-matched healthy control (HC) subjects completed neuropsychologic (NP) testing and magnetic resonance imaging (MRI) scans of the brain. RESULTS NP testing and MRI scanning was successfully completed in 98% of the type 1 diabetic and 93% of the HC children. A significant negative relationship between HbA1c and Wechsler Intelligence Scale for Children (WISC) verbal comprehension was observed. WISC index scores were significantly reduced in type 1 diabetic subjects who had experienced seizures. White matter volume did not show the expected increase with age in children with type 1 diabetes compared with HC children (diagnosis by age interaction, P=0.005). A similar trend was detected for hippocampal volume. Children with type 1 diabetes who had experienced seizures showed significantly reduced gray matter and white matter volumes relative to children with type 1 diabetes who had not experienced seizures. CONCLUSIONS It is feasible to perform MRI and NP testing in young children with type 1 diabetes. Further, early signs of neuroanatomic variation may be present in this population. Larger cross-sectional and longitudinal studies of neurocognitive function and neuroanatomy are needed to define the effect of type 1 diabetes on the developing brain.
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Affiliation(s)
- Tandy Aye
- Department of Pediatrics, Division of Pediatric Endocrinology and Diabetes, Stanford University School of Medicine, Stanford, California, USA.
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Jermendy A, Toschi E, Aye T, Koh A, Aguayo-Mazzucato C, Sharma A, Weir GC, Sgroi D, Bonner-Weir S. Rat neonatal beta cells lack the specialised metabolic phenotype of mature beta cells. Diabetologia 2011; 54:594-604. [PMID: 21240476 PMCID: PMC3045081 DOI: 10.1007/s00125-010-2036-x] [Citation(s) in RCA: 83] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/31/2010] [Accepted: 11/25/2010] [Indexed: 01/01/2023]
Abstract
AIMS/HYPOTHESIS Fetal and neonatal beta cells have poor glucose-induced insulin secretion and only gain robust glucose responsiveness several weeks after birth. We hypothesise that this unresponsiveness is due to a generalised immaturity of the metabolic pathways normally found in beta cells rather than to a specific defect. METHODS Using laser-capture microdissection we excised beta cell-enriched cores of pancreatic islets from day 1 (P1) neonatal and young adult Sprague-Dawley rats in order to compare their gene-expression profiles using Affymetrix U34A microarrays (neonatal, n = 4; adult, n = 3). RESULTS Using dChip software for analysis, 217 probe sets for genes/38 expressed sequence tags (ESTs) were significantly higher and 345 probe sets for genes/33 ESTs significantly lower in beta cell-enriched cores of neonatal islets compared with those of adult islets. Among the genes lower in the neonatal beta cells were key metabolic genes including mitochondrial shuttles (malate dehydrogenase, glycerol-3-phosphate dehydrogenase and glutamate oxalacetate transaminase), pyruvate carboxylase and carnitine palmitoyl transferase 2. Differential expression of these enzyme genes was confirmed by quantitative PCR on RNA from isolated neonatal (P2 until P28) and adult islets and with immunostaining of pancreas. Even by 28 days of age some of these genes were still expressed at lower levels than in adults. CONCLUSIONS/INTERPRETATION The lack of glucose responsiveness in neonatal islets is likely to be due to a generalised immaturity of the metabolic specialisation of pancreatic beta cells.
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Affiliation(s)
- A. Jermendy
- Section on Islet Cell and Regenerative Biology, Research Division, Joslin Diabetes Center, Department of Medicine, Harvard Medical School, One Joslin Place, Boston, MA 02215, USA; 1st Department of Pediatrics, Semmelweis University, Budapest, Hungary
| | - E. Toschi
- Section on Islet Cell and Regenerative Biology, Research Division, Joslin Diabetes Center, Department of Medicine, Harvard Medical School, One Joslin Place, Boston, MA 02215, USA
| | - T. Aye
- Section on Islet Cell and Regenerative Biology, Research Division, Joslin Diabetes Center, Department of Medicine, Harvard Medical School, One Joslin Place, Boston, MA 02215, USA
| | - A. Koh
- Section on Islet Cell and Regenerative Biology, Research Division, Joslin Diabetes Center, Department of Medicine, Harvard Medical School, One Joslin Place, Boston, MA 02215, USA
| | - C. Aguayo-Mazzucato
- Section on Islet Cell and Regenerative Biology, Research Division, Joslin Diabetes Center, Department of Medicine, Harvard Medical School, One Joslin Place, Boston, MA 02215, USA
| | - A. Sharma
- Section on Islet Cell and Regenerative Biology, Research Division, Joslin Diabetes Center, Department of Medicine, Harvard Medical School, One Joslin Place, Boston, MA 02215, USA
| | - G. C. Weir
- Section on Islet Cell and Regenerative Biology, Research Division, Joslin Diabetes Center, Department of Medicine, Harvard Medical School, One Joslin Place, Boston, MA 02215, USA
| | - D. Sgroi
- Molecular Pathology Unit, Massachusetts General Hospital, Department of Pathology, Harvard Medical School, Boston, MA, USA
| | - S. Bonner-Weir
- Section on Islet Cell and Regenerative Biology, Research Division, Joslin Diabetes Center, Department of Medicine, Harvard Medical School, One Joslin Place, Boston, MA 02215, USA
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Abstract
This article reviews current pump and continuous glucose monitoring therapy and what will be required to integrate these systems into closed-loop control. Issues with sensor accuracy, lag time, and calibration are discussed as well as issues with insulin pharmacodynamics, which result in a delayed onset of insulin action in a closed-loop system. A stepwise approach to closed-loop therapy is anticipated, where the first systems will suspend insulin delivery based on actual or predicted hypoglycemia. Subsequent systems may control to range, limiting the time spent in hyperglycemia by mitigating the effects of a missed food bolus or underestimate of consumed carbohydrates, while minimizing the risk of hypoglycemia.
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Affiliation(s)
- Tandy Aye
- Department of Pediatrics, Stanford Medical Center, G-313, 300 Pasteur Drive, Stanford, CA, 94305-5208, Phone: 650-723-5791, Fax: 650-7258375
| | - Jen Block
- Department of Pediatrics, Stanford Medical Center, G-313, 300 Pasteur Drive, Stanford, CA, 94305-5208, Phone: 650-723-5791, Fax: 650-7258375
| | - Bruce Buckingham
- Department of Pediatrics, Stanford Medical Center, G-313, 300 Pasteur Drive, Stanford, CA, 94305-5208, Phone: 650-723-5791, Fax: 650-7258375
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Wilson DM, Abrams SH, Aye T, Lee PDK, Lenders C, Lustig RH, Osganian SV, Feldman HA. Metformin extended release treatment of adolescent obesity: a 48-week randomized, double-blind, placebo-controlled trial with 48-week follow-up. ACTA ACUST UNITED AC 2010; 164:116-23. [PMID: 20124139 DOI: 10.1001/archpediatrics.2009.264] [Citation(s) in RCA: 59] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
BACKGROUND Metformin has been proffered as a therapy for adolescent obesity, although long-term controlled studies have not been reported. OBJECTIVE To test the hypothesis that 48 weeks of daily metformin hydrochloride extended release (XR) therapy will reduce body mass index (BMI) in obese adolescents, as compared with placebo. DESIGN Multicenter, randomized, double-blind, placebo-controlled clinical trial. SETTING The 6 centers of the Glaser Pediatric Research Network from October 2003 to August 2007. PARTICIPANTS Obese (BMI > or = 95th percentile) adolescents (aged 13-18 years) were randomly assigned to the intervention (n = 39) or placebo groups. Intervention Following a 1-month run-in period, subjects following a lifestyle intervention program were randomized 1:1 to 48 weeks' treatment with metformin hydrochloride XR, 2000 mg once daily, or an identical placebo. Subjects were monitored for an additional 48 weeks. Main Outcome Measure Change in BMI, adjusted for site, sex, race, ethnicity, and age and metformin vs placebo. RESULTS After 48 weeks, mean (SE) adjusted BMI increased 0.2 (0.5) in the placebo group and decreased 0.9 (0.5) in the metformin XR group (P = .03). This difference persisted for 12 to 24 weeks after cessation of treatment. No significant effects of metformin on body composition, abdominal fat, or insulin indices were observed. CONCLUSION Metformin XR caused a small but statistically significant decrease in BMI when added to a lifestyle intervention program. TRIAL REGISTRATION clinicaltrials.gov Identifiers: NCT00209482 and NCT00120146.
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Affiliation(s)
- Darrell M Wilson
- Division of Pediatric Endocrinology and Diabetes, Stanford University and the Lucile Packard Children's Hospital at Stanford, G-313 Medical Center, Stanford, CA 94305-5208, USA.
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Aye T, Toschi E, Sharma A, Sgroi D, Bonner-Weir S. Identification of markers for newly formed beta-cells in the perinatal period: a time of recognized beta-cell immaturity. J Histochem Cytochem 2010; 58:369-76. [PMID: 20051380 DOI: 10.1369/jhc.2009.954909] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
Markers of beta-cell maturity would be useful in staging the differentiation of stem/progenitor cells to beta-cells whether in vivo or in vitro. We previously identified markers for newly formed beta-cells in regenerating rat pancreases after 90% partial pancreatectomy. To test the generality of these markers of newly formed beta-cells, we examined their expression during the perinatal period, a time of recognized beta-cell immaturity. We show by semiquantitative RT-PCR and immunostaining over the time course from embryonic day 18/20 to birth, 1 day, 2 days, 3 days, 7 days, and adult that MMP-2, CK-19, and SPD are truly markers of new and immature beta-cells and that their expression transiently peaks in the perinatal period and is not entirely synchronous. The shared expression of these markers among fetal, newborn, and newly regenerated beta-cells, but not adult, strongly supports their use as potential markers for new beta-cells in the assessment of both the maturity of stem cell-derived insulin-producing cells and the presence of newly formed islets (neogenesis) in the adult pancreas.
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Affiliation(s)
- Tandy Aye
- Section of Islet Transplantation and Cell Biology, Joslin Diabetes Center, Boston, Massachusetts 02215, USA
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