Both Dietary Protein and Fat Increase Postprandial Glucose Excursions in Children With Type 1 Diabetes, and the Effect Is Additive Featured Article: Carmel.

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Presentation transcript:

Both Dietary Protein and Fat Increase Postprandial Glucose Excursions in Children With Type 1 Diabetes, and the Effect Is Additive Featured Article: Carmel E.M. Smart, R.D., P.H.D., Megan Evans, R.D., PGRADDIPDIET, Susan M. O’Connell, M.D., F.R.A.C.P., Patrick McElduff, P.H.D., Prudence E. Lopez, M.D., Timothy W. Jones, M.D., F.R.A.C.P., Elizabeth A. Davis, M.D., P.H.D., Bruce R. King, M.D., P.H.D. Diabetes Care Volume 36: 3897-3902 December, 2013

STUDY OBJECTIVE To determine the effects of high-protein (HP) and high-fat (HF) meals on postprandial glycemia in children using intensive insulin therapy (IIT) Smart C. E.M. et al. Diabetes Care 2013;36:3897-3902

STUDY DESIGN AND METHODS 33 subjects aged 8–17 years were given four test breakfasts with the same carbohydrate amount but varying protein and fat quantities: Low fat (LF)/low protein (LP) LF/HP HF/LP HF/HP Smart C. E.M. et al. Diabetes Care 2013;36:3897-3902

STUDY DESIGN AND METHODS LF and HF meals contained 4 and 35 g fat, respectively LP and HP meals contained 5 and 40 g protein, respectively An individually standardized insulin dose was given for each meal Postprandial glycemia was assessed by 5-h continuous glucose monitoring Smart C. E.M. et al. Diabetes Care 2013;36:3897-3902

Table 1- Macronutrient composition for LF, HF, LP, and HP test meals Subjects #45 kg consumed 75% of the total serve for each test meal. Smart C. E.M. et al. Diabetes Care 2013;36:3897-3902

RESULTS Compared with the LF/LP meal, mean glucose excursions were greater from 180 min after the LF/HP meal and from 210 min after the HF/LP meal HF/HP meal resulted in higher glucose excursions from 180 to 300 min Reduction in the risk of hypoglycemia occurred after the HP meals Smart C. E.M. et al. Diabetes Care 2013;36:3897-3902

Table 2- Clinical characteristics of participants Data are presented as means 6 SD. Smart C. E.M. et al. Diabetes Care 2013;36:3897-3902

Figure 1- Mean postprandial glucose excursions from 0 to 300 min for 33 subjects after test meals of LF/LP (C), LF/HP (◆), HF/LP (▲), and HF/HP () content. Carbohydrate amount was the same in all meals. There were significant differences in glucose excursions between meal types from 150 to 300 min (P , 0.03). Error bars represent 95% CIs. Smart C. E.M. et al. Diabetes Care 2013;36:3897-3902

CONCLUSIONS Meals high in protein or fat increase glucose excursions from 3 to 5 h postmeal Protein and fat have an additive impact on the delayed postprandial glycemic rise Protein had a protective effect on the development of hypoglycemia Smart C. E.M. et al. Diabetes Care 2013;36:3897-3902

Table 3- Mean postprandial glucose excursions by meal type at 30-min intervals to 300 min Data are presented as means (95% CI). *Statistically different compared with glucose excursion for the LF/LP meal at that time point (P # 0.05). Smart C. E.M. et al. Diabetes Care 2013;36:3897-3902