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Titration of telmisartan, but not addition of amlodipine, reduces urine albumin in diabetic patients treated with telmisartan-diuretic.


J Hypertens. 2012 Oct 8;


Authors: Kojima M, Ohashi M, Dohi Y, Kimura G


Abstract

OBJECTIVES:: Microalbuminuria is closely associated with an increased risk of renal and cardiovascular adverse outcomes. The present study tested the hypothesis that titration of telmisartan reduces urinary excretion of albumin more than does addition of amlodipine in patients treated with a standard dose of telmisartan combined with a low-dose diuretic for the same degree of blood pressure reduction. METHODS:: Hypertensive patients with type 2 diabetes mellitus and microalbuminuria under treatment with a combination of a standard dose of telmisartan (40 mg/day) and trichlormethiazide (1 mg/day) were randomly assigned to receive either an increased dose of telmisartan (80 mg/day) combined with trichlormethiazide [increased dose angiotensin receptor blocker (ARB) group, n = 20] or a combination consisting of telmisartan (40 mg/day), trichlormethiazide, and amlodipine (5 mg/day) (triple combination group, n = 20) for 6 months. The primary endpoint was a reduction in urinary albumin levels. RESULTS:: Although blood pressure was reduced to a similar extent by the two regimens, patients receiving the increased dose ARB showed a higher reduction in urinary albumin (-37.4 ± 16.9%) than those on the triple combination regimen (-8.9 ± 23.7%; P < 0.0001). The reduction in urinary albumin was correlated with the drop in blood pressure in the latter group, but not in the increased dose ARB group. CONCLUSION:: Uptitration of telmisartan more effectively reduces urinary albumin than addition of amlodipine in hypertensive patients with diabetes treated with a combination of telmisartan and diuretic for the same degree of blood pressure reduction.

PMID: 23047595 [PubMed - as supplied by publisher]