View clinical trials related to Nephrosclerosis.
Filter by:The AASK is a multicenter, randomized, controlled clinical trial using a 2 × 3 factorial design to evaluate the effects of level of blood pressure control and type of anti-hypertensive medication on progression of chronic renal disease among African American men and women with chronic renal insufficiency caused by hypertension (hypertensive nephrosclerosis).
The purpose of this study is to determine the recommended dose of the sustained-release form of BPS (TRK-100STP low dose or high dose) in Japanese patients with CRF (Primary glomerular disease/nephrosclerosis).
Primary Hypothesis: Aldosterone breakthrough will occur at a far lower frequency during renin inhibition (0-10% over 9 months), alone or in combination with an ARB, compared to conventional ARB therapy (35-45% over 9 months). The investigators hypothesize that aldosterone breakthrough occurs due to accumulation of active precursor substances, most notably angiotensin II, produced in response to conventional RAAS blockade with ACEinhibitors and ARBs. The investigators believe that direct renin inhibition (DRI) should minimize this accumulation and therefore significantly lower or possibly eliminate the breakthrough effect. Interruption of the renin-angiotensin-aldosterone system (RAAS) with angiotensin-converting enzyme inhibitors (ACE-Is) and angiotensin receptor blockers (ARBs), alone and in combination, has become a leading therapy to slow the progression of chronic heart and kidney disease. Both types of drugs inhibit the formation of aldosterone, a hormone, which has been shown to have harmful effects on patients with chronic heart and kidney disorders. This treatment is effective but not perfect since, even after an initial improvement, many patients become worse over the long term. This may be due to an unexpected increase in aldosterone, a phenomenon called "aldosterone breakthrough." The purpose of this study is to find out whether the use of a direct renin inhibitor (DRI) alone, or in combination with an angiotensin receptor blocker (ARB), will lessen the occurrence of aldosterone breakthrough since direct renin inhibitors inhibit the formation of aldosterone at a very early step. This study will compare the effectiveness of adding Diovan (valsartan) or Tekturna (aliskiren) or a combination of Diovan and Tekturna to the usual antihypertensive treatment. The investigators will follow blood pressure, aldosterone levels, and urinary protein levels over 9 months to evaluate which of these therapies is most effective for treating hypertension in patients with proteinuric kidney disease.
In Chronic Renal Failure (CRF) patients with primary glomerular disease or nephrosclerosis as the primary disease: - To confirm the superiority of TRK-100STP over placebo - To determine the recommended therapeutic dose in the 2 doses of TRK-100STP - To assess the safety of TRK-100STP