Bando, Hiroshi Tokushima University|Japan Low Carbohydrate Diet Promotion Association KAKEN Search Researchers
Ebe, Koji Japan Low Carbohydrate Diet Promotion Association|Takao Hospital
Muneta, Tetsuo Japan Low Carbohydrate Diet Promotion Association|Muneta Maternity Clinic
Bando, Masahiro Tokushima University
Yonei, Yoshikazu Doshisha University
C-peptide index for Carbohydrate-70 (CPI-Carbo70)
Insulinogenic index (IGI)
low carbohydrate diet (LCD)
type 2 diabetes mellitus (T2DM)
Calorie Restriction (CR)
Background: Discussion concerning Carbohydrate Restriction (CR) and Low Carbohydrate Diet (LCD) has been continued. Authors formerly proposed insulinogenic index-carbohydrate 70 g (IGI-carbo70). Along this, C-peptide index for Carbohydrate-70 g (CPI-Carbo70) is studied.
Subjects and Methods: Subjects were 46 patients (62.5 yo. in average) with Type 2 diabetes mellitus (T2DM) and admitted for evaluation. CR diet was given on day 1-2 with 60% carbohydrates, 25% lipids and 15% protein with 1400 kcal/day. On day 2, breakfast with Carbo70 was given, and glucose and C-peptide (CP) were measured at 0 and 30 minutes and analyzed.
Results: As basal data, average HbA1c was 8.1%, median HbA1c, average daily glucose, median M value was 7.7%, 187 mg/dL, 71, respectively. In response to Carbo70, median values of glucose-0, glucose-30, delta-glucose, CP-0, CP-30, delta-CP was 142, 186, 22 mg/dL, 0.9, 1.4, 0.4 ng/mL, respectively. CPI-Carbo70 was 1.54 in median. There were significant correlation between glucose and CP on 0, 30min, delta-0-30min (p<0.01). Significant correlation was observed between CPI and HbA1c, CPI and M value (p<0.01).
Discussion and Conclusion: CPI-Carbo70 might be useful for evaluating pancreas function and glucose variability in clinical research. Current data would become the fundamental data for the future diabetic practice and research development.
Endocrinology and Metabolism : Open Access
© 2018 Bando H, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
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