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Safety, efficacy and glucose turnover of reduced prandial boluses during closed-loop therapy in adolescents with type 1 diabetes: a randomized clinical trial.
Elleri, D; Biagioni, M; Allen, J M; Kumareswaran, K; Leelarathna, L; Caldwell, K; Nodale, M; Wilinska, M E; Haidar, A; Calhoun, P; Kollman, C; Jackson, N C; Umpleby, A M; Acerini, C L; Dunger, D B; Hovorka, R.
Afiliação
  • Elleri D; Department of Paediatrics, University of Cambridge, Cambridge, UK.
  • Biagioni M; Wellcome Trust-MRC Institute of Metabolic Science, Cambridge, UK.
  • Allen JM; Department of Paediatrics, University of Cambridge, Cambridge, UK.
  • Kumareswaran K; Wellcome Trust-MRC Institute of Metabolic Science, Cambridge, UK.
  • Leelarathna L; Department of Paediatrics, University of Cambridge, Cambridge, UK.
  • Caldwell K; Wellcome Trust-MRC Institute of Metabolic Science, Cambridge, UK.
  • Nodale M; Wellcome Trust-MRC Institute of Metabolic Science, Cambridge, UK.
  • Wilinska ME; Wellcome Trust-MRC Institute of Metabolic Science, Cambridge, UK.
  • Haidar A; Wellcome Trust-MRC Institute of Metabolic Science, Cambridge, UK.
  • Calhoun P; Wellcome Trust-MRC Institute of Metabolic Science, Cambridge, UK.
  • Kollman C; Department of Paediatrics, University of Cambridge, Cambridge, UK.
  • Jackson NC; Wellcome Trust-MRC Institute of Metabolic Science, Cambridge, UK.
  • Umpleby AM; Wellcome Trust-MRC Institute of Metabolic Science, Cambridge, UK.
  • Acerini CL; The Jaeb Center for Health Research, Tampa, FL, USA.
  • Dunger DB; The Jaeb Center for Health Research, Tampa, FL, USA.
  • Hovorka R; Diabetes and Metabolic Medicine, Faculty of Health and Medical Sciences, University of Surrey, Guildford, UK.
Diabetes Obes Metab ; 17(12): 1173-9, 2015 Dec.
Article em En | MEDLINE | ID: mdl-26257323
AIMS: To evaluate safety, efficacy and glucose turnover during closed-loop with meal announcement using reduced prandial insulin boluses in adolescents with type 1 diabetes (T1D). METHODS: We conducted a randomized crossover study comparing closed-loop therapy with standard prandial insulin boluses versus closed-loop therapy with prandial boluses reduced by 25%. Eight adolescents with T1D [3 males; mean (standard deviation) age 15.9 (1.5) years, glycated haemoglobin 74 (17) mmol/mol; median (interquartile range) total daily dose 0.9 (0.7, 1.1) IU/kg/day] were studied on two 36-h-long visits. In random order, subjects received closed-loop therapy with either standard or reduced insulin boluses administered with main meals (50-80 g carbohydrates) but not with snacks (15-30 g carbohydrates). Stable-label tracer dilution methodology measured total glucose appearance (Ra_total) and glucose disposal (Rd). RESULTS: The median (interquartile range) time spent in target (3.9-10 mmol/l) was similar between the two interventions [74 (66, 84)% vs 80 (65, 96)%; p = 0.87] as was time spent above 10 mmol/l [21.8 (16.3, 33.5)% vs 18.0 (4.1, 34.2)%; p = 0.87] and below 3.9 mmol/l [0 (0, 1.5)% vs 0 (0, 1.8)%; p = 0.88]. Mean plasma glucose was identical during the two interventions [8.4 (0.9) mmol/l; p = 0.98]. Hypoglycaemia occurred once 1.5 h post-meal during closed-loop therapy with standard bolus. Overall insulin delivery was lower with reduced prandial boluses [61.9 (55.2, 75.0) vs 72.5 (63.6, 80.3) IU; p = 0.01] and resulted in lower mean plasma insulin concentration [186 (171, 260) vs 252 (198, 336) pmol/l; p = 0.002]. Lower plasma insulin was also documented overnight [160 (136, 192) vs 191 (133, 252) pmol/l; p = 0.01, pooled nights]. Ra_total was similar [26.3 (21.9, 28.0) vs 25.4 (21.0, 29.2) µmol/kg/min; p = 0.19] during the two interventions as was Rd [25.8 (21.0, 26.9) vs 25.2 (21.2, 28.8) µmol/kg/min; p = 0.46]. CONCLUSIONS: A 25% reduction in prandial boluses during closed-loop therapy maintains similar glucose control in adolescents with T1D whilst lowering overall plasma insulin levels. It remains unclear whether closed-loop therapy with a 25% reduction in prandial boluses would prevent postprandial hypoglycaemia.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Glicemia / Sistemas de Infusão de Insulina / Diabetes Mellitus Tipo 1 / Hipoglicemia / Hipoglicemiantes / Insulina / Monitorização Fisiológica Tipo de estudo: Clinical_trials / Etiology_studies / Risk_factors_studies Limite: Adolescent / Female / Humans / Male País/Região como assunto: Europa Idioma: En Revista: Diabetes Obes Metab Assunto da revista: ENDOCRINOLOGIA / METABOLISMO Ano de publicação: 2015 Tipo de documento: Article

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Glicemia / Sistemas de Infusão de Insulina / Diabetes Mellitus Tipo 1 / Hipoglicemia / Hipoglicemiantes / Insulina / Monitorização Fisiológica Tipo de estudo: Clinical_trials / Etiology_studies / Risk_factors_studies Limite: Adolescent / Female / Humans / Male País/Região como assunto: Europa Idioma: En Revista: Diabetes Obes Metab Assunto da revista: ENDOCRINOLOGIA / METABOLISMO Ano de publicação: 2015 Tipo de documento: Article