Pioglitazone shown to reverse thickening of carotid artery wall

Mainz, Germany, November 9, 2004 Clinical study results presented today in New Orleans, Louisiana, during the American Heart Association's Scientific Sessions 2004 proceedings, have shown that the drug pioglitazone (ACTOS, Takeda) significantly reduced the thickness of the carotid (neck) artery in patients with type 2 diabetes. By contrast, no change in carotid thickness was seen in a group of patients who received glimepiride, an older drug for type 2 diabetes.

"These results are provocative, because both drugs showed similar effects on lowering blood glucose, the traditional principal target for type 2 diabetes therapy," noted principal investigator Thomas Forst, Professor for Internal Medicine, Institute for Clinical Research and Development in Mainz, Germany.

"The thickness of the carotid artery is an indicator of atherosclerotic disease, which may both reduce arterial blood flow and set the stage for unstable blood clots in the arteries to dislodge and potentially cause a heart attack or stroke. The reduction in thickness by pioglitazone, a member of a new class of type 2 diabetes drugs called thiazolidinediones (TZDs) suggests that this medication may have benefits beyond improving metabolic control in patients with diabetes mellitus type 2," continued Forst. "This substantial regression of carotid intima media thickness over just 12 or 24 weeks may have important prognostic implications for patients with type 2 diabetes."

Study Design and Results

In the study, B-mode ultrasound was used to measure the intima media thickness (IMT) of the carotid artery before and 12 and 24 weeks after 173 patients received oral therapy with either pioglitazone (45 mg/day) or glimepiride (1-6 mg/day). Baseline carotid IMT was 0.949 0.149mm in the pioglitazone group and 0.924 0.150mm in the glimepiride group (p=n.s.). Carotid IMT was reduced only in the pioglitazone group after 12 weeks (-0.033 0.052mm) vs. -0.002 0.047mm

Contact: Kate Sullivan

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