TY - JOUR
T1 - Metabolic effect of a LoBAG30 diet in men with type 2 diabetes
AU - Nuttall, frank q
AU - Schweim, Kelly
AU - Hoover, Heidi
AU - Gannon, Mary C
PY - 2006
Y1 - 2006
N2 - We recently reported that in subjects with untreated type 2 diabetes a 5-wk diet of 30:30:40 carbohydrate/protein/fat ratio resulted in a significant decrease in 24-h integrated glucose, total %glycohemoglobin, and total cholesterol compared with a control diet of 55:15:30 carbohydrate/protein/fat given at the beginning of the 5-wk period. Body weight was stable and insulin was unchanged. We now present data on other hormones and metabolites considered to be affected by dietary macronutrient changes. The test diet resulted in an elevated fasting plasma total IGF-I, but not growth hormone. Urinary free cortisol was increased. Serum renin and urinary aldosterone remained unchanged. Blood pressure was stable. Serum creatinine and uric acid were increased. Urinary microalbumin was decreased. Creatinine clearance, serum B12, folate, homocysteine, TSH, and free thyroxine were unchanged. Total triiodothyronine was decreased. Plasma α-amino nitrogen, urea nitrogen, and serum albumin were increased. Urea production rate was increased such that a new steady state was present. The calculated urea production rate accounted for 84% of protein ingested on the control diet but only 68% on the test diet, suggesting net nitrogen retention on the latter. Overall, the lack of negative effects, the improved glucose control, and the positive nitrogen balance suggest such a diet will be beneficial for older subjects with type 2 diabetes. Nevertheless, the long-term effects and general applicability of the diet remain to be determined.
AB - We recently reported that in subjects with untreated type 2 diabetes a 5-wk diet of 30:30:40 carbohydrate/protein/fat ratio resulted in a significant decrease in 24-h integrated glucose, total %glycohemoglobin, and total cholesterol compared with a control diet of 55:15:30 carbohydrate/protein/fat given at the beginning of the 5-wk period. Body weight was stable and insulin was unchanged. We now present data on other hormones and metabolites considered to be affected by dietary macronutrient changes. The test diet resulted in an elevated fasting plasma total IGF-I, but not growth hormone. Urinary free cortisol was increased. Serum renin and urinary aldosterone remained unchanged. Blood pressure was stable. Serum creatinine and uric acid were increased. Urinary microalbumin was decreased. Creatinine clearance, serum B12, folate, homocysteine, TSH, and free thyroxine were unchanged. Total triiodothyronine was decreased. Plasma α-amino nitrogen, urea nitrogen, and serum albumin were increased. Urea production rate was increased such that a new steady state was present. The calculated urea production rate accounted for 84% of protein ingested on the control diet but only 68% on the test diet, suggesting net nitrogen retention on the latter. Overall, the lack of negative effects, the improved glucose control, and the positive nitrogen balance suggest such a diet will be beneficial for older subjects with type 2 diabetes. Nevertheless, the long-term effects and general applicability of the diet remain to be determined.
KW - Diabetes
KW - Glycemic index
KW - High-protein diet
KW - Low biologically available glucose-30 diet
KW - Protein balance
KW - Thyroid hormone
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U2 - 10.1152/ajpendo.00011.2006
DO - 10.1152/ajpendo.00011.2006
M3 - Article
C2 - 16720631
AN - SCOPUS:33749258729
SN - 0193-1849
VL - 291
SP - E786-E791
JO - American Journal of Physiology - Endocrinology and Metabolism
JF - American Journal of Physiology - Endocrinology and Metabolism
IS - 4
ER -