Relative Effects of Telmisartan, Candesartan and Losartan on Alleviating Arterial Stiffness in Patients with Hypertension Complicated by Diabetes Mellitus: An Evaluation Using the Cardio-Ankle Vascular Index (CAVI)

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Using the cardio-ankle vascular index (CAVI) as an indicator, we assessed improvement of arterial stiffness in 95 outpatients with hypertension complicated by type 2 diabetes mellitus who were treated orally for >or= 12 months with telmisartan 40 mg/day, losartan 50 mg/day or candesartan 8 mg/day. At 1 year, in the telmisartan and losartan groups CAVI did not change whereas in the candesartan group CAVI showed a statistically significant decrease of 2.70%. Although telmisartan is believed to enhance the activity of peroxisome proliferator-activated receptor (PPAR-gamma) in vitro, it did not ameliorate arterial stiffness in our patients. Candesartan, however, improved arterial stiffness independently of blood pressure lowering and without PPAR-gamma agonist action, possibly by direct action resulting from its potent affinity and binding capacity for the angiotensin II type 1 receptor. We conclude that candesartan is a potentially useful therapy against arterial stiffness in hypertensive patients with type 2 diabetes mellitus.

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