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One-year glycemic control with a sulfonylurea plus pioglitazone versus a sulfonylurea plus metformin in patients with type 2 diabetes.

Abstract：

OBJECTIVE:The goal was to assess the 1-year efficacy and safety of the addition of pioglitazone or metformin to existing sulfonylurea (SU) therapy in patients with inadequately controlled type 2 diabetes. RESEARCH DESIGN AND METHODS:In this multicenter, double-blind study, patients were randomized to receive either pioglitazone 15 mg (n = 319) or metformin 850 mg (n = 320) and up to 45 mg/day and 2,550 mg/day, respectively. The primary efficacy endpoint was HbA(1c) at week 52. Fasting plasma glucose, insulin, and lipid profiles were also measured. RESULTS:HbA(1c) was reduced by 1.20% in the SU plus pioglitazone group and 1.36% in the SU plus metformin group, and fasting plasma glucose was reduced by 2.2 and 2.3 mmol/l in the respective groups. Fasting insulin levels were also reduced (pioglitazone arm -1.3 micro IU/ml; metformin arm -0.8 micro IU/ml). There were no significant between-treatment differences in these three parameters. Pioglitazone addition to SU significantly reduced triglycerides (-16 vs. -9%; P = 0.008) and increased HDL cholesterol (14 vs. 8%; P < 0.001) compared with metformin addition. LDL cholesterol was increased 2% by the addition of pioglitazone and decreased 5% by the addition of metformin to SU (P < 0.001). Urinary albumin-to-creatinine ratio was reduced by 15% in the SU plus pioglitazone group and increased 2% in the SU plus metformin group (P = 0.017). Both combinations were well tolerated with no evidence of hepatic or cardiac toxicity in either group. CONCLUSIONS:Clinically equivalent improvements in glycemic control were observed for both combinations. Compared with metformin plus SU, addition of pioglitazone to SU resulted in a reduction of the urinary albumin-to-creatinine ratio, a small but significant rise in LDL cholesterol, and significantly greater improvements in triglyceride levels and HDL cholesterol levels. Metformin plus SU was associated with a significant reduction in LDL cholesterol. SU plus pioglitazone is an effective and well-tolerated combination regimen that may provide additional beneficial effects for patients with type 2 diabetes.

journal_name

Diabetes Care

journal_title

Diabetes care

authors

Hanefeld M,Brunetti P,Schernthaner GH,Matthews DR,Charbonnel BH,QUARTET Study Group.

doi

10.2337/diacare.27.1.141

subject

Has Abstract

pub_date

2004-01-01 00:00:00

pages

141-7

issue

eissn

0149-5992

issn

1935-5548

journal_volume

pub_type

临床试验,杂志文章,多中心研究,随机对照试验

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One-year glycemic control with a sulfonylurea plus pioglitazone versus a sulfonylurea plus metformin in patients with type 2 diabetes.