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Greater early postprandial suppression of endogenous glucose production and higher initial glucose disappearance is achieved with fast-acting insulin aspart compared with insulin aspart.

ABSTRACT: AIM:To investigate the mechanisms behind the lower postprandial glucose (PPG) concentrations achieved with fast-acting insulin aspart (faster aspart) than with insulin aspart (IAsp). MATERIALS AND METHODS:In a randomized, double-blind, crossover trial, 41 people with type 1 diabetes received identical subcutaneous single faster aspart and IAsp doses (individualized for each participant), together with a standardized mixed meal (including 75 g carbohydrate labelled with [1-13 C] glucose). PPG turnover was determined by the triple-tracer meal method using continuous, variable [6-3 H] glucose and [6,6-2 H2 ] glucose infusion. RESULTS:Insulin exposure within the first hour was 32% greater with faster aspart than with IAsp (treatment ratio faster aspart/IAsp 1.32 [95% confidence interval {CI} 1.18;1.48]; P < .001), leading to a 0.59-mmol/L non-significantly smaller PPG increment at 1 hour (?PG1h ; treatment difference faster aspart-IAsp -0.59 mmol/L [95% CI -1.19; 0.01]; P = .055). The trend towards reduced ?PG1h with faster aspart was attributable to 12% greater suppression of endogenous glucose production (EGP; treatment ratio 1.12 [95% CI 1.01; 1.25]; P = .040) and 23% higher glucose disappearance (1.23 [95% CI 1.05; 1.45]; P = .012) with faster aspart than with IAsp during the first hour. Suppression of free fatty acid levels during the first hour was 36% greater for faster aspart than for IAsp (1.36 [95% CI 1.01;1.88]; P = .042). CONCLUSIONS:The trend towards improved PPG control with faster aspart vs IAsp in this study was attributable to both greater early suppression of EGP and stimulation of glucose disappearance.

SUBMITTER: Basu A

PROVIDER: S-EPMC6033168 | biostudies-literature | 2018 Jul

REPOSITORIES: biostudies-literature

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Greater early postprandial suppression of endogenous glucose production and higher initial glucose disappearance is achieved with fast-acting insulin aspart compared with insulin aspart.

Basu Ananda A Pieber Thomas R TR Hansen Ann K AK Sach-Friedl Stefanie S Erichsen Lars L Basu Rita R Haahr Hanne H

Diabetes, obesity & metabolism 20180330 7

<h4>Aim</h4>To investigate the mechanisms behind the lower postprandial glucose (PPG) concentrations achieved with fast-acting insulin aspart (faster aspart) than with insulin aspart (IAsp).<h4>Materials and methods</h4>In a randomized, double-blind, crossover trial, 41 people with type 1 diabetes received identical subcutaneous single faster aspart and IAsp doses (individualized for each participant), together with a standardized mixed meal (including 75 g carbohydrate labelled with [1-<sup>13< ...[more]

PMID: 29493118

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Project description:BACKGROUND:Fast-acting insulin aspart (faster aspart) is an ultra-fast-acting formulation of insulin aspart (IAsp). This post hoc analysis investigated the pharmacokinetics of faster aspart versus IAsp, measured as free or total IAsp, and the relationship between anti-IAsp antibodies and the pharmacokinetics/pharmacodynamics of faster aspart and IAsp. METHODS:Free and total IAsp concentrations and anti-IAsp antibodies were determined in adults with type 1 diabetes mellitus receiving subcutaneous faster aspart and/or IAsp in four single-dose clinical pharmacology trials (n = 175) and a 26-week phase IIIa trial (n = 1040). Pharmacodynamics were assessed by euglycaemic clamp or meal test, respectively. RESULTS:The pharmacokinetic profile was left-shifted and early exposure was greater with faster aspart versus IAsp independent of free or total IAsp assay. The faster aspart-IAsp difference in the time to 50% of maximum IAsp concentration in the early part of the pharmacokinetic profile (tEarly 50 % Cmax) [95% confidence interval (CI)] was - 8.8 [- 10.0 to - 7.5] and - 7.6 [- 8.8 to - 6.4] min for free and total IAsp, respectively. The faster aspart/IAsp ratio for the area under the concentration-time curve (AUC) for IAsp from time zero to 30 min (AUCIAsp,0-30 min) [95% CI] was 1.88 [1.74-2.04] and 1.77 [1.64-1.90] for free and total IAsp. Higher anti-IAsp antibody levels were associated with a lower ratio of free/total IAsp for the total AUC for IAsp (AUCIAsp,0-t). Early glucose-lowering effect (AUC for the glucose infusion rate [GIR] from time zero to 60 min [AUCGIR,0-60 min]) was greater by 25-44% for faster aspart versus IAsp independent of anti-IAsp antibody levels. Total glucose-lowering effect (total AUC for GIR [AUCGIR,0-t]) in a clamp and 1-h postprandial glucose increment in a meal test appeared essentially unaffected by anti-IAsp antibodies. CONCLUSIONS:Faster aspart provides accelerated pharmacokinetics versus IAsp regardless if based on free or total IAsp assay. Higher anti-IAsp antibodies increase total IAsp concentrations but do not influence faster aspart nor IAsp pharmacodynamics. CLINICALTRIALS. GOV IDENTIFIERS:NCT01618188, NCT02003677, NCT01934712, NCT02568280, NCT01831765.

Project description:BACKGROUND:The majority of therapies have generally targeted fasting glucose control, and current mealtime insulin therapies have longer time action profiles than that of endogenously secreted insulin. The primary purpose of this study was to assess both glucose time-in-range (TIR: 70-180?mg/dL) and postprandial glucose excursions (PPGE) in 1-4?h using a real-time continuous glucose monitor (CGM) with Technosphere insulin (TI) versus insulin aspart in patients with type 1 diabetes (T1DM) on multiple daily injections (MDI). RESEARCH DESIGN AND METHODS:This pilot, investigator-led, collaborative, open-label, multicenter, clinical research trial enrolled 60 patients with T1DM with HbA1c levels ?6.5% and ?10%. Individuals were randomized to treatment with titrated TI (n?=?26) or titrated insulin aspart (n?=?34), stratified by baseline HbA1c levels (?8% or >8%). All were required to wear a real-time CGM throughout the trial. All patients in the TI group were advised to take supplemental inhalations at 1 and 2?h after meals if indicated based on postprandial glucose (PPG) values. The coprimary outcomes were assessed both in the full intent-to-treat population and in those individuals randomized to TI who were compliant with supplemental doses ?90% of the time (n?=?15). The CGM data were analyzed using linear regression models. RESULTS:Overall, those treated with TI versus aspart achieved comparable TIR, but less time spent in hypoglycemia (<60 and <50?mg/dL, both P?<?0.05). In the TI-compliant group (n?=?15), TIR was significantly greater (62.5%?±?2.6% vs. 53.8%?±?1.7%, P?=?0.009) and time in hyperglycemia >180?mg/dL was lower (34.2%?±?2.7% vs. 41.0%?±?1.7%, P?=?0.045) as compared with the aspart group. PPG was also significantly lower in the TI cohort at 60 and 90?min postmeal, and PPGE were lower in the TI-compliant group as compared with the aspart group over 1-4-h postmeal (P?<?0.05). In addition, there was weight gain in the aspart group compared with weight loss in the TI group (P?=?0.006) despite higher prandial TI insulin dose. CONCLUSIONS:We conclude that using TI appropriately at mealtimes with supplemental dosing improves prandial glucose (TIR and 1-4?h) control without any increase in time in hypoglycemia or weight gain in patients with T1DM on MDI. The study results support a larger study using a treat-to-target design to confirm these findings. Clinical trial reg. no. NCT03143816, clinicaltrials.gov .

Dataset Information

Greater early postprandial suppression of endogenous glucose production and higher initial glucose disappearance is achieved with fast-acting insulin aspart compared with insulin aspart.

Publications

Greater early postprandial suppression of endogenous glucose production and higher initial glucose disappearance is achieved with fast-acting insulin aspart compared with insulin aspart.

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