Abstract
Generation of angiotensin II (Ang II) contributes to the pathogenesis of cardiovascular diseases. Owing to the existence of high levels of Ang II within the kidney, blockade of the intrarenal Ang II levels may be important since long term outcome seems not only to be related to blood pressure per se. This was a prospective, randomized, double-blind, placebo-controlled study, with crossover design. We examined in 13 patients with mild to moderate hypertension the specific systemic and renal blocking properties of two different Ang II receptor blockers during a wide range of Ang II concentrations, 24 h post dose. The effects were evaluated after 4 weeks treatment with candesartan cilexetil (16 mg OD), losartan (50 mg OD) and placebo using clearance techniques. Candesartan reduced the 24 h blood pressure better than losartan (138(*)/87+/-12/8 vs 145/89+/-12/7 mmHg, (*)P<0.05 vs losartan) and placebo. Despite the lower blood pressure, candesartan attenuated the Ang II-induced response on ERPF and RVR markedly better than losartan or placebo. The GFR decreased, as expected, with placebo, but remained stable with candesartan. The present study demonstrates that in hypertensive patients candesartan and to a lesser degree losartan are ...Continue Reading
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Aug 20, 2010·Hypertension Research : Official Journal of the Japanese Society of Hypertension·Yuichiro Yano, Kazuomi Kario
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