The effects of rosiglitazone on inflammatory biomarkers and adipokines in diabetic, hypertensive patients.
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OBJECTIVE: To compare the effects of a 12-week treatment course of a rosiglitazone-based versus a metformin- or glyburide-based strategy on inflammatory biomarkers and adipokine levels in hypertensive, type 2 diabetes patients. METHODS: One hundred three treatment-naive patients or patients on monotherapy with either metformin or glyburide, and a hemoglobin A1C (A1C) ≥7.5%, were randomly assigned to either rosiglitazone add-on (4 mg/day ± titration to 8 mg/day) or a combination of metformin (250 mg twice per day [BID] titrated to 500 BID if A1C ≥7.5% and ≤8.0%; 500 mg BID titrated to 1 g BID if A1C >8.0%) and glyburide (2.5 mg BID titrated to 5 mg BID if A1C ≥7.5% and ≤8.0%; 5 mg BID titrated to 10 mg BID if A1C >8.0%). RESULTS: Rosiglitazone add-on produced significantly greater reductions in high-sensitivity C-reactive protein (2.1 mg/L to 0.9 mg/L) and increases in adiponectin (8.7 mg/mL to 14.8 mg/mL) levels compared with metformin/glyburide (both P<0.005). At close-out, all patients had improved fasting plasma glucose and A1C levels (8.5% to 7.4% and 8.8% to 7.1% for rosiglitazone add-on and metformin-glyburide, respectively [P<0.001 for both arms]) relative to the corresponding baseline values. CONCLUSIONS: The present study demonstrated that in hypertensive, diabetic subjects, a rosiglitazone-based treatment strategy results in favourable changes in inflammatory biomarkers compared with metformin/glyburide.
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