期刊
JOURNAL OF CLINICAL ENDOCRINOLOGY & METABOLISM
卷 89, 期 12, 页码 6068-6076出版社
ENDOCRINE SOC
DOI: 10.1210/jc.2003-030861
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Pioglitazone increases the insulin sensitivity of peripheral tissues and may provide an alternative first-line treatment for type 2 diabetes. This study compared metabolic control in drug-naive type 2 diabetes patients given either pioglitazone or metformin. Eleven hundred and ninety-nine patients with poorly controlled type 2 diabetes mellitus [ glycosylated hemoglobin (HbA(1c)), 7.5 - 11%; normal, 4.3 - 6.1%] were randomized to receive either pioglitazone (less than or equal to 45 mg/d) or metformin (less than or equal to 850 mg, three times daily). HbA(1c), fasting plasma glucose (FPG), insulin levels, total cholesterol (TC), high density lipoprotein cholesterol (HDL-C), low density lipoprotein cholesterol, triglycerides, free fatty acids, and urinary albumin/ creatinine ratio were measured. Mean HbA1c decreased in both treatment groups from baseline to wk 52 (- 1.4% and - 1.5%). Significantly greater mean reductions in FPG were observed in the pioglitazone group ( - 45.0 mg/dl; - 2.5 mmol/ liter) than in the metformin ( - 39.6 mg/dl; - 2.2 mmol/liter) group ( P = 0.016). Favorable changes in triglycerides and HDL-C were more pronounced with pioglitazone. Although low density lipoprotein cholesterol and TC levels increased with pioglitazone, TC/HDL-C ratios decreased similarly with both treatments. The urinary albumin/creatinine ratio was reduced by 19% with pioglitazone treatment, but remained unchanged with metformin therapy ( - 1%; P = 0.002). There was an increase in body weight of 1.9 kg in the pioglitazone group and a decrease of 2.5 kg in the metformin group. The overall frequency of adverse events was similar between treatment groups, but adverse event profiles were different between treatment groups. HbA(1c) reduction is similar after pioglitazone and metformin monotherapies, but differences in FPG, plasma lipids, and adverse effects between the two compounds may influence decision-making in individual prescribers.
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