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Continued reduction in the prevalence of retinopathy in adolescents with type 1 diabetes: role of insulin therapy and glycemic control.

ABSTRACT: OBJECTIVE: To examine trends in microvascular complications in adolescents with type 1 diabetes between 1990 and 2009 in Sydney, Australia. RESEARCH DESIGN AND METHODS: We used analysis of complications in 1,604 adolescents (54% female, aged 12-20 years, median duration 8.6 years), stratified by four time periods using Generalized Estimation Equations as follows: T1 (1990-1994), T2 (1995-1999), T3 (2000-2004), and T4 (2005-2009). Early retinopathy was detected using seven-field fundal photography, albumin excretion rate (AER) using timed overnight urine collections, and albumin-to-creatinine ratio (ACR) and peripheral nerve function using thermal and vibration threshold. RESULTS: Retinopathy declined (53, 38, 23, and 12%; P < 0.001), as did borderline elevation of AER/ACR (45, 30, 26, and 30%; P < 0.001) and microalbuminuria (8, 4, 3, and 3%; P = 0.006). Multiple daily injections (MDI)/continuous subcutaneous insulin infusion (CSII) use increased (17, 54, 75, and 88%; P < 0.001), median HbA(1c) decreased (9.1, 8.9, 8.5, and 8.5%; P < 0.001), and severe hypoglycemia was unchanged (6, 8, 10, and 7%; P = 0.272). Retinopathy was associated with diabetes duration (odds ratio [OR] 1.12 [95% CI 1.08-1.17]), age (1.13 [1.06-1.20]), HbA(1c) (1.16 [1.08-1.25]), systolic blood pressure (BP) SDS (1.31 [1.16-1.48]), socioeconomic disadvantage (1.42 [1.04-1.95]), and 1 to 2 injections per day (vs. MDI/CSII; 1.35 [1.05-1.73]); borderline AER/ACR with male sex (1.32 [1.02-1.70]), age (1.19 [1.12-1.26]), HbA(1c) (1.18 [1.08-1.29]), weight SDS (1.31 [1.21-1.53]), insulin dose per kilograms (1.64 [1.13-2.39]), 1 to 2 injections per day (1.41 [1.08-1.84]), and socioeconomic disadvantage (1.68 [1.23-2.31]); and microalbuminuria with age (1.14 [1.01-1.29]), HbA(1c) (1.20 [1.05-1.37]), diastolic BP SDS (1.76 [1.26-2.46]), and 1 to 2 injections per day (1.95 [1.11-3.41]). CONCLUSIONS: The decline in retinopathy supports contemporary guidelines that recommend lower glycemic targets and use of MDI/CSII in children and adolescents with type 1 diabetes.

SUBMITTER: Downie E

PROVIDER: S-EPMC3198305 | biostudies-literature | 2011 Nov

REPOSITORIES: biostudies-literature

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Continued reduction in the prevalence of retinopathy in adolescents with type 1 diabetes: role of insulin therapy and glycemic control.

Downie Elizabeth E Craig Maria E ME Hing Stephen S Cusumano Janine J Chan Albert K F AK Donaghue Kim C KC

Diabetes care 20111101 11

<h4>Objective</h4>To examine trends in microvascular complications in adolescents with type 1 diabetes between 1990 and 2009 in Sydney, Australia.<h4>Research design and methods</h4>We used analysis of complications in 1,604 adolescents (54% female, aged 12-20 years, median duration 8.6 years), stratified by four time periods using Generalized Estimation Equations as follows: T1 (1990-1994), T2 (1995-1999), T3 (2000-2004), and T4 (2005-2009). Early retinopathy was detected using seven-field fund ...[more]

PMID: 22025782

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Project description:Insulin pump therapy may improve metabolic control in young patients with type 1 diabetes, but the association with short-term diabetes complications is unclear.To determine whether rates of severe hypoglycemia and diabetic ketoacidosis are lower with insulin pump therapy compared with insulin injection therapy in children, adolescents, and young adults with type 1 diabetes.Population-based cohort study conducted between January 2011 and December 2015 in 446 diabetes centers participating in the Diabetes Prospective Follow-up Initiative in Germany, Austria, and Luxembourg. Patients with type 1 diabetes younger than 20 years and diabetes duration of more than 1 year were identified. Propensity score matching and inverse probability of treatment weighting analyses with age, sex, diabetes duration, migration background (defined as place of birth outside of Germany or Austria), body mass index, and glycated hemoglobin as covariates were used to account for relevant confounders.Type 1 diabetes treated with insulin pump therapy or with multiple (?4) daily insulin injections.Primary outcomes were rates of severe hypoglycemia and diabetic ketoacidosis during the most recent treatment year. Secondary outcomes included glycated hemoglobin levels, insulin dose, and body mass index.Of 30?579 patients (mean age, 14.1 years [SD, 4.0]; 53% male), 14?119 used pump therapy (median duration, 3.7 years) and 16?460 used insulin injections (median duration, 3.6 years). Patients using pump therapy (n?=?9814) were matched with 9814 patients using injection therapy. Pump therapy, compared with injection therapy, was associated with lower rates of severe hypoglycemia (9.55 vs 13.97 per 100 patient-years; difference, -4.42 [95% CI, -6.15 to -2.69]; P?<?.001) and diabetic ketoacidosis (3.64 vs 4.26 per 100 patient-years; difference, -0.63 [95% CI, -1.24 to -0.02]; P?=?.04). Glycated hemoglobin levels were lower with pump therapy than with injection therapy (8.04% vs 8.22%; difference, -0.18 [95% CI, -0.22 to -0.13], P?<?.001). Total daily insulin doses were lower for pump therapy compared with injection therapy (0.84 U/kg vs 0.98 U/kg; difference, -0.14 [-0.15 to -0.13], P?<?.001). There was no significant difference in body mass index between both treatment regimens. Similar results were obtained after propensity score inverse probability of treatment weighting analyses in the entire cohort.Among young patients with type 1 diabetes, insulin pump therapy, compared with insulin injection therapy, was associated with lower risks of severe hypoglycemia and diabetic ketoacidosis and with better glycemic control during the most recent year of therapy. These findings provide evidence for improved clinical outcomes associated with insulin pump therapy compared with injection therapy in children, adolescents, and young adults with type 1 diabetes.

Project description:INTRODUCTION:DUAL II Japan (NCT02911948) was a 26-week, phase 3a randomized, treat-to-target trial which compared the efficacy and safety of IDegLira with degludec in 210 Japanese patients with type 2 diabetes (T2D) uncontrolled on premixed or basal insulin therapy. The DUAL II Japan trial presented the opportunity for a post hoc analysis to examine the safety and efficacy of switching patients from a premixed regimen (containing both basal and bolus insulin components) to IDegLira. METHODS:Patients from DUAL II Japan were stratified according to prior insulin regimen (premixed or basal insulin). The following endpoints were assessed in this post hoc analysis by pre-trial insulin regimen: change in HbA1c, body weight, daily total insulin dose, nine-point self-measured blood glucose, and severe or blood glucose-confirmed hypoglycemia (defined as severe or plasma glucose less than 56 mg/dL). RESULTS:This post hoc analysis included 39 patients who switched from premixed insulin to IDegLira. The treatment effect in this population was independent of insulin type at baseline (premixed or basal; interaction test, P = 0.2535). In patients switching from premixed insulin to IDegLira, mean [standard deviation (SD)] HbA1c was 8.26% (0.73) at baseline and 6.68% (0.93) at week 26. Mean (SD) body weight was reduced by 1.5 (2.9) kg. At week 26, daily insulin dose was 34.2 dose steps. After 26 weeks, the mean prandial increment was smaller at all meals with IDegLira irrespective of pre-trial insulin regimen. Rate of hypoglycemic events was 2.59 events/patient-year of exposure over the 26 weeks. CONCLUSION:This post hoc study is the first to evaluate the switch from premixed insulin to IDegLira in patients with uncontrolled T2D. IDegLira initiation resulted in improved HbA1c and weight loss. This study offers insight into the effectiveness and safety of switching patients from premixed insulin therapy to IDegLira, and provides support for further investigation. TRIAL REGISTRATION:NCT02911948.

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Continued reduction in the prevalence of retinopathy in adolescents with type 1 diabetes: role of insulin therapy and glycemic control.

Publications

Continued reduction in the prevalence of retinopathy in adolescents with type 1 diabetes: role of insulin therapy and glycemic control.

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