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Endocr Res. 2012;37(4):175-81. doi: 10.3109/07435800.2012.662664. Epub 2012 May 23.

A new preventive strategy for hypoglycemia incorporating added food diet in patients with type 2 diabetes who received sitagliptin therapy.

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Division of Endocrinology, Metabolism and Nephrology, Department of Internal Medicine, School of Medicine, Keio University, Tokyo, Japan.


There has been concern as to whether dipeptidyl peptidase-4 (DPP-4) inhibitors can be used safely in patients with relatively good glycemic control. This study, approved by the institutional review board of Hanzoumon Diabetes City Atlas Clinic, examined whether DPP-4 inhibitor sitagliptin could safely achieve good glycemic control without severe hypoglycemia by employing the "added food" concept. The subjects were 60 patients (46 men and 14 women) with type 2 diabetes who started sitagliptin therapy during a 1-month period from December 15, 2009 to January 15, 2010. They were recommended to have added food between meals to prevent hypoglycemia, while maintaining the same daily calorie intake. HbA(1c) decreased from 7.1 ± 1.2% to 6.5 ± 0.6% after 6 months of sitagliptin treatment (p < 0.001). In patients with a baseline HbA(1c) <7%, it decreased from 6.5 ± 0.3% to 6.1 ± 0.4% (p < 0.001). Systolic blood pressure was significantly reduced from 127.7 ± 17.0 to 122.7 ± 17.9 mmHg in the patients with a baseline HbA(1c) < 7% (p = 0.018). However, body weight increased by approximately 900 g and high-density lipoprotein cholesterol decreased significantly from 1.57 ± 0.46 to 1.43 ± 0.35 mmol/L (p < 0.01) in the patients concomitantly receiving sulfonylureas with sitagliptin. Excellent glycemic control was achieved by sitagliptin treatment together with the added food concept. However, combined use of sitagliptin with sulfonylureas requires attention to weight gain and the lipid profile. Further clinical studies will elucidate whether sitagliptin can decrease cardiovascular events as well as normalizing blood glucose and lowering the blood pressure.

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