Diabetes Care 30:1577-1578, 2007 DOI: 10.2337/dc06-1998 © 2007 by the American Diabetes Association
Prevention of Transition From Incipient to Overt Nephropathy With Telmisartan in Patients With Type 2 Diabetes
1 Department of Medicine and Clinical Science, Okayama University Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences, Okayama, Japan Address correspondence and reprint requests to Professor Hirofumi Makino, Department of Medicine and Clinical Science, Okayama University Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences, 2-5-1 Shikata-cho, Okayama, Japan. E-mail: makino@md.okayama-u.ac.jp
Abbreviations: ARB, angiotensin receptor blocker DBP, diastolic blood pressure SBP, systolic blood pressure UACR, urinary albumin-to-creatinine ratio
To date, evidence for long-term renoprotection with angiotensin receptor blockers (ARBs) has come almost exclusively from Caucasian patients (13), despite Japanese people being at high risk of diabetic nephropathy and very susceptible to end-stage renal disease (46). We conducted the INNOVATION Study (Incipient to Overt: Angiotensin II Blocker, Telmisartan, Investigation on Type 2 Diabetic Nephropathy) to evaluate the efficacy of an ARB in preventing transition from microalbuminuria to overt nephropathy in Japanese patients (7). This study is the first large-scale clinical study to investigate prevention of overt diabetic nephropathy using an ARB in normotensive and hypertensive Japanese patients with type 2 diabetes.
The randomized, multicenter, double-blind, placebo-controlled trial was performed in patients aged from 30 to 74 years with type 2 diabetes and urinary albumin-to-creatinine ratio (UACR) 100300 mg/g and serum creatinine <1.5 mg/dl (men) and <1.3 mg/dl (women). Exclusion criteria included type 1 diabetes, age of diabetes onset <30 years, seated systolic blood pressure (SBP)/diastolic blood pressure (DBP) 180/100 mmHg, and definable chronic kidney
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