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Malik FS, Sauder KA, Isom S, Reboussin BA, Dabelea D, Lawrence JM, Roberts A, Mayer-Davis EJ, Marcovina S, Dolan L, Igudesman D, Pihoker C, Lawrence JM, Hung P, Koebnick C, Li X, Lustigova E, Reynolds K, Pettitt DJ, Mayer-Davis EJ, Mottl A, Thomas J, Jackson M, Knight L, Liese AD, Turley C, Bowlby D, Amrhein J, Apperson E, Nelson B, Dabelea D, Bellatorre A, Crume T, Hamman RF, Sauder KA, Shapiro A, Testaverde L, Klingensmith GJ, Maahs D, Rewers MJ, Wadwa P, Daniels S, Kahn MG, Wilkening G, Bloch CA, Powell J, Love-Osborne K, Hu DC, Dolan LM, Shah AS, Standiford DA, Urbina EM, Pihoker C, Hirsch I, Kim G, Malik FA, Merjaneh L, Roberts A, Taplin C, Yi-Frazier J, Beauregard N, Franklin C, Gangan C, Kearns S, Klingsheim M, Loots B, Pascual M, Greenbaum C, Imperatore G, Saydah SH, Linder B, Marcovina SM, Chait A, Clouet-Foraison N, Harting J, Strylewicz G, D'Agostino R, Jensen ET, Wagenknecht LE, Bell RA, Casanova R, Divers J, Goldstein MT, Henkin L, Isom S, Lenoir K, Pierce J, Reboussin B, Rigdon J, South AM, Stafford J, Suerken C, Wells B, Williams C. Trends in Glycemic Control Among Youth and Young Adults With Diabetes: The SEARCH for Diabetes in Youth Study. Diabetes Care 2022; 45:285-294. [PMID: 34995346 PMCID: PMC8914430 DOI: 10.2337/dc21-0507] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [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: 03/04/2021] [Accepted: 11/15/2021] [Indexed: 02/03/2023]
Abstract
OBJECTIVE To describe temporal trends and correlates of glycemic control in youth and young adults (YYA) with youth-onset diabetes. RESEARCH DESIGN AND METHODS The study included 6,369 participants with type 1 or type 2 diabetes from the SEARCH for Diabetes in Youth study. Participant visit data were categorized into time periods of 2002-2007, 2008-2013, and 2014-2019, diabetes durations of 1-4, 5-9, and ≥10 years, and age groups of 1-9, 10-14, 15-19, 20-24, and ≥25 years. Participants contributed one randomly selected data point to each duration and age group per time period. Multivariable regression models were used to test differences in hemoglobin A1c (HbA1c) over time by diabetes type. Models were adjusted for site, age, sex, race/ethnicity, household income, health insurance status, insulin regimen, and diabetes duration, overall and stratified for each diabetes duration and age group. RESULTS Adjusted mean HbA1c for the 2014-2019 cohort of YYA with type 1 diabetes was 8.8 ± 0.04%. YYA with type 1 diabetes in the 10-14-, 15-19-, and 20-24-year-old age groups from the 2014-2019 cohort had worse glycemic control than the 2002-2007 cohort. Race/ethnicity, household income, and treatment regimen predicted differences in glycemic control in participants with type 1 diabetes from the 2014-2019 cohort. Adjusted mean HbA1c was 8.6 ± 0.12% for 2014-2019 YYA with type 2 diabetes. Participants aged ≥25 years with type 2 diabetes had worse glycemic control relative to the 2008-2013 cohort. Only treatment regimen was associated with differences in glycemic control in participants with type 2 diabetes. CONCLUSIONS Despite advances in diabetes technologies, medications, and dissemination of more aggressive glycemic targets, many current YYA are less likely to achieve desired glycemic control relative to earlier cohorts.
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Affiliation(s)
- Faisal S Malik
- Department of Pediatrics, University of Washington, Seattle, WA
| | - Katherine A Sauder
- Department of Epidemiology, Colorado School of Public Health, Aurora, CO
| | - Scott Isom
- Department of Biostatistical Sciences, Wake Forest University School of Medicine, Winston-Salem, NC
| | - Beth A Reboussin
- Department of Biostatistical Sciences, Wake Forest University School of Medicine, Winston-Salem, NC
| | - Dana Dabelea
- Department of Epidemiology, Colorado School of Public Health, Aurora, CO
| | - Jean M Lawrence
- Department of Research & Evaluation, Kaiser Permanente Southern California, Pasadena, CA
| | - Alissa Roberts
- Department of Pediatrics, University of Washington, Seattle, WA
| | | | | | - Lawrence Dolan
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH
| | - Daria Igudesman
- Departments of Nutrition and Medicine, University of North Carolina, Chapel Hill, NC
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Constantacos C, Hunter JD, Walsh ET, South AM. Rare PHEX variant with insidious presentation leads to a delayed diagnosis of X-linked hypophosphatemia. BMJ Case Rep 2021; 14:14/5/e240336. [PMID: 34011663 DOI: 10.1136/bcr-2020-240336] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Abstract
A 7-year-old girl without a significant previous medical history was diagnosed with X-linked hypophosphatemic rickets (XLHR) due to a rare, most likely pathogenic, PHEX gene variant after a 4-year delayed diagnosis due to mild clinical presentation. At 2 years of age, her intoeing and femoral bowing were attributed to physiologic bowing and borderline vitamin D sufficiency, despite phosphorus not being measured. Hypophosphatemia was eventually detected after incomplete improvement of bowing and leg length discrepancy with suboptimal linear growth. This rare PHEX variant (c.1949T>C, p.Leu650Pro) further supported the clinical diagnosis of XLHR. Treatment with burosumab (an anti-FGF23 monoclonal antibody) normalised phosphorus and alkaline phosphatase levels and improved her bowing. The diverse phenotypic presentation of this variant can result in delayed diagnosis and highlights the importance of prompt assessment of phosphorus levels in patients with skeletal deformities to ensure timely recognition and treatment.
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Affiliation(s)
- Cathrine Constantacos
- Pediatrics, Section of Endocrinology, Wake Forest University School of Medicine, Winston Salem, North Carolina, USA
| | - Janel Darcy Hunter
- Pediatrics, Section of Endocrinology, Wake Forest University School of Medicine, Winston Salem, North Carolina, USA
| | - Elizabeth Tharpe Walsh
- Pediatrics, Section of Endocrinology, Wake Forest University School of Medicine, Winston Salem, North Carolina, USA
| | - Andrew Michael South
- Pediatrics, Section of Nephrology, Wake Forest University School of Medicine, Winston Salem, North Carolina, USA.,Epidemiology and Prevention, Division of Public Health Sciences, Wake Forest University School of Medicine, Winston Salem, North Carolina, USA
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Abstract
A 4-year-old boy presented with fatigue and was found to have severe kidney injury requiring haemodialysis. A renal ultrasound demonstrated bilateral nephromegaly with mild loss of corticomedullary differentiation but preserved echogenicity. He had a persistent isolated monocytosis. Renal biopsy revealed extensive infiltration by primary renal diffuse large B-cell lymphoma. He required haemodialysis for 18 days and received chemotherapy with cyclophosphamide, doxorubicin, vincristine, prednisone, rituximab and intrathecal methotrexate. He achieved remission with an estimated glomerular filtration rate of 50 mL/min/1.73 m2, and his kidneys returned to normal size. Nephromegaly due to renal-limited haematolymphoid disease is extremely rare, especially in children.
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Affiliation(s)
- Andrew Michael South
- Department of Pediatrics, Section of Nephrology, Wake Forest School of Medicine, Winston Salem, North Carolina, USA
- Division of Public Health Sciences, Department of Epidemiology and Prevention, Wake Forest School of Medicine, Winston Salem, North Carolina, USA
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South AM, Nixon PA, Chappell MC, Diz DI, Jensen ET, Shaltout HA, Washburn LK. Preterm Adolescents Exhibit Higher Blood Pressure and Sodium Retention with Higher Uric Acid and Differential Circulating Renin‐Angiotensin System Expression. FASEB J 2018. [DOI: 10.1096/fasebj.2018.32.1_supplement.883.6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Andrew Michael South
- PediatricsWake Forest School of MedicineWinston SalemNC
- Cardiovascular Sciences CenterWake Forest School of MedicineWinston SalemNC
| | - Patricia A. Nixon
- PediatricsWake Forest School of MedicineWinston SalemNC
- Health and Exercise ScienceWake Forest UniversityWinston SalemNC
| | - Mark C. Chappell
- Surgery‐Hypertension & Vascular ResearchWake Forest School of MedicineWinston SalemNC
- Cardiovascular Sciences CenterWake Forest School of MedicineWinston SalemNC
| | - Debra I. Diz
- Surgery‐Hypertension & Vascular ResearchWake Forest School of MedicineWinston SalemNC
- Cardiovascular Sciences CenterWake Forest School of MedicineWinston SalemNC
| | | | - Hossam A. Shaltout
- Obstetrics and GynecologyWake Forest School of MedicineWinston SalemNC
- Cardiovascular Sciences CenterWake Forest School of MedicineWinston SalemNC
| | - Lisa K. Washburn
- PediatricsWake Forest School of MedicineWinston SalemNC
- Cardiovascular Sciences CenterWake Forest School of MedicineWinston SalemNC
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Roscoe HK, Freshwater RA, Wolfenden R, Jones RL, Fish DJ, Harries JE, South AM, Oldham DJ. Using stars for remote sensing of the Earth's stratosphere. Appl Opt 1994; 33:7126-7131. [PMID: 20941265 DOI: 10.1364/ao.33.007126] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
A new UV-visible spectrometer system that measures the absorption of light from stars and planets by constituents in the Earth's atmosphere is described. Because it can be used to make measurements at night, the system has a significant advantage for measuring polar constituents in winter, when conditions that might give rise to ozone loss are initiated. Other advantages arise from the use of a cooled two-dimensional CCD array as the detector: an array detector avoids spectral noise resulting from scintillation of stars or from clouds passing overhead and allows for the possibility of measuring several constituents simultaneously; its second dimension permits auroral light from the atmosphere adjacent to the star to be measured simultaneously and subtracted from the stellar light, and a modern low-noise CCD allows us to use a telescope of modest diameter. The few previous measurements of constituents made by the use of stellar absorption did not have these advantages. The instrument was configured for simplicity and ease of use in field measurements and was deployed outside in winter in Northern Sweden in 1991. Examples of ozone measurements are shown.
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