期刊
CURRENT MEDICAL RESEARCH AND OPINION
卷 25, 期 5, 页码 1111-1119出版社
TAYLOR & FRANCIS LTD
DOI: 10.1185/03007990902820816
关键词
Combination therapy; Metformin; Pioglitazone; Type 2 diabetes
资金
- Takeda Pharmaceutical Co., Ltd, Osaka, Japan
Objective: To assess the efficacy and safety of combination therapy with pioglitazone and metformin in Japanese patients with type 2 diabetes. Research design and methods: During a 12-week observation period 236 patients were treated with metformin 500 or 750 mg/day. 169 patients with a confirmed HbA(1c) level >= 6.5% were randomized (stratified according to metformin dosage) to receive pioglitazone 15 mg/day for 12 weeks then increased to 30 mg/day for a further 16 weeks (n=83), or placebo (n=86). Outcome measures included HbA1c, fasting blood glucose (FBG), percentage of patients achieving HbA(1c)< 6.5%, lipid profile, and other metabolic parameters. Results: Mean HbA1c was reduced by 0.67% in patients receiving pioglitazone plus metformin versus an increase of 0.25% in those receiving metformin alone (p<0.0001). After 8 weeks' treatment and until the end of the study, HbA(1c) was significantly lower with pioglitazone plus metformin and more patients in this group achieved an HbA(1c) < 6.5% (38.6% vs. 8.1%; p < 0.0001). FBG was also reduced by a significantly greater amount in patients receiving pioglitazone plus metformin compared with metformin monotherapy (-20.5 vs. 1.9 mg/dl; p < 0.0001). Combination therapy was associated with significantly increased HDL-cholesterol, total cholesterol, and adiponectin, and significantly decreased levels of fasting insulin, free fatty acids, and homeostasis model assessment insulin resistance (HOMA-R) compared with metformin monotherapy. Overall, combination therapy and monotherapy were equally well tolerated and the incidence of adverse effects 'possibly' related to therapy was 15.7% and 11.6% ( p=0.505), respectively. Edema occurred slightly more often in the combination group (6.0 vs. 1.2%). Conclusion: Pioglitazone plus metformin significantly improved glycemic control (HbA(1c) and FBG), and markers associated with increased insulin resistance and cardiovascular risk compared with metformin monotherapy.
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