OBJECTIVE: We assessed the predictive parameters for therapeutic efficacy of initial combination therapy with sitagliptin and metformin in drug-naïve type 2 diabetic patients. DeSIGN, PATIENTS, AND MEASUREMENTS: In this 52-week treatment study, 150 patients (mean age, 54·9 ± 12·5 years) with type 2 diabetes and HbA1c of 7·0-10% were treated with sitagliptin 100 mg once and metformin 500 mg twice daily. To assess the predictive parameters for therapeutic efficacy, a multivariate regression analysis was performed with baseline fasting glucose, insulin, C-peptide, and glucagon levels, homoeostasis model assessment-insulin resistance (HOMA-IR) and β-cell function (HOMA-B), insulinogenic index (IGI, defined as 30-0 min insulin/30-0 min glucose), and area under the curve for glucose, insulin, and C-peptide obtained after 75-g oral glucose tolerance test. RESULTS: After 52 weeks, mean HbA1c levels and fasting and postload 2-h glucose were significantly decreased from 8·7 ± 1·4% to 7·2 ± 1·3%, 9·2 ± 3·0 to 7·2 ± 1·8 mm, and 17·5 ± 5·1 to 10·9 ± 3·6 mm, respectively (P < 0·01). HOMA-B and IGI increased significantly from 50·3 ± 33·5 to 75·1 ± 32·8 and from 11·3 ± 1·3 to 35·0 ± 6·3 at 52 weeks, respectively (P < 0·01). Multivariate regression analysis indicated that the reduction in HbA1c was significantly associated with high baseline HbA1c, low IGI, and short duration of diabetes after adjusting for age, sex, body mass index, blood pressure, triglycerides, creatinine, high-sensitivity CRP, glucagon, C-peptide, HOMA-B, and HOMA-IR. No severe adverse events were observed. CONCLUSION: These results suggest that drug-naïve type 2 diabetic patients with low β-cell function would benefit the most from early initial combination therapy of sitagliptin and metformin.
OBJECTIVE: We assessed the predictive parameters for therapeutic efficacy of initial combination therapy with sitagliptin and metformin in drug-naïve type 2 diabeticpatients. DeSIGN, PATIENTS, AND MEASUREMENTS: In this 52-week treatment study, 150 patients (mean age, 54·9 ± 12·5 years) with type 2 diabetes and HbA1c of 7·0-10% were treated with sitagliptin 100 mg once and metformin 500 mg twice daily. To assess the predictive parameters for therapeutic efficacy, a multivariate regression analysis was performed with baseline fasting glucose, insulin, C-peptide, and glucagon levels, homoeostasis model assessment-insulin resistance (HOMA-IR) and β-cell function (HOMA-B), insulinogenic index (IGI, defined as 30-0 min insulin/30-0 min glucose), and area under the curve for glucose, insulin, and C-peptide obtained after 75-g oral glucose tolerance test. RESULTS: After 52 weeks, mean HbA1c levels and fasting and postload 2-h glucose were significantly decreased from 8·7 ± 1·4% to 7·2 ± 1·3%, 9·2 ± 3·0 to 7·2 ± 1·8 mm, and 17·5 ± 5·1 to 10·9 ± 3·6 mm, respectively (P < 0·01). HOMA-B and IGI increased significantly from 50·3 ± 33·5 to 75·1 ± 32·8 and from 11·3 ± 1·3 to 35·0 ± 6·3 at 52 weeks, respectively (P < 0·01). Multivariate regression analysis indicated that the reduction in HbA1c was significantly associated with high baseline HbA1c, low IGI, and short duration of diabetes after adjusting for age, sex, body mass index, blood pressure, triglycerides, creatinine, high-sensitivity CRP, glucagon, C-peptide, HOMA-B, and HOMA-IR. No severe adverse events were observed. CONCLUSION: These results suggest that drug-naïve type 2 diabeticpatients with low β-cell function would benefit the most from early initial combination therapy of sitagliptin and metformin.
Authors: Eu Jeong Ku; Kyong Yeon Jung; Yoon Ji Kim; Kyoung Min Kim; Jae Hoon Moon; Sung Hee Choi; Young Min Cho; Kyong Soo Park; Hak Chul Jang; Soo Lim; Bo Ahrén Journal: PLoS One Date: 2015-06-12 Impact factor: 3.240
Authors: Tae Jung Oh; Hye Seung Jung; Jae Hyun Bae; Yeong Gi Kim; Kyeong Seon Park; Young Min Cho; Kyong Soo Park; Seong Yeon Kim Journal: J Korean Med Sci Date: 2013-06-03 Impact factor: 2.153