J Korean Diabetes > Volume 14(4); 2013 > Article
The Journal of Korean Diabetes 2013;14(4):206-211.
DOI: https://doi.org/10.4093/jkd.2013.14.4.206    Published online December 24, 2013.
시타글립틴의 혈당강하효과에 영향을 미치는 인자
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Factors Influencing Glycemic Control Response of Sitagliptin.
Gun Woo Kim, Jae Hyun Kim, Mi Young Lee, Jang Yel Shin, Young Goo Shin, Eun Ho Ha, Choon Hee Chung
1Department of Internal Medicine, Yonsei University Wonju College of Medicine, Wonju, Korea. cchung@yonsei.ac.kr
2Department of Information & Statistics, Yonsei University College of Science of Technology, Wonju, Korea.
Dipeptidyl peptidase 4 (DPP-4) inhibitors are proposed to reduce blood glucose in type 2 diabetes by prolonging the activity of circulating incretins. However, the factors that affect the efficacy of sitagliptin have not yet been demonstrated. Therefore, we studied them in a Korean population. METHODS: We performed a retrospective analysis in patients taking sitagliptin in Wonju Christian Hospital. One hundred-fifty patients whose serum HbA1c ranged from 6.5% to 11% participated in this study. These patients were divided into two groups: responder and non-responder. The responder group consisted of subjects with glucose lowering greater than 5% of baseline HbA1c. The others were in non-responder group. We analyzed anthropometric data and biochemical markers in all groups, then compared responder group and non-responder group by logistic regression. RESULTS: The change in HbA1c level across all groups was 8.25 +/- 0.82% to 7.64 +/- 1.03% (P value = 0.000). There were 93 and 57 patients in responder and non-responder group, respectively. The responder group had lower BMI, body fat (kg), body fat (%) than the non-responder group (P value = 0.024, P value = 0.029, P value = 0.025), and the HbA1c lowering effect of sitagliptin was greater in male than female (P value = 0.000). CONCLUSION: In this study, HbA1c was effectively lowered in 62% of the patients. The factors that affect the efficacy of sitagliptin were BMI, body fat (kg) body fat (%), and sex. Based on these results, we conclude that sitagliptin lowers glucose more effectively in non-obese male patients.
Key Words: Dipeptidyl-peptidase IV inhibitors, Sitagliptin, Type 2 diabetes mellitus
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