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Am J Med Sci. 2012 Jan;343(1):46-51. doi: 10.1097/MAJ.0b013e31821f0552.

Changes in urinary albumin excretion, inflammatory and oxidative stress markers in ADPKD patients with hypertension.

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Department of Medicine, Shinmatsudo Central General Hospital, Chiba, Japan.



Autosomal dominant polycystic kidney disease (ADPKD) progresses more quickly to end-stage renal disease in patients with hypertension than in their normotensive counterparts. The authors investigated the effect of telmisartan versus enalapril on systolic and diastolic blood pressure (SBP and DBP), urinary albumin excretion (UAE), serum high mobility group box-1 protein (HMGB1), serum interleukin (IL)-6 and urinary 8-hydroxydeoxyguanosine (8-OHdG) levels in patients with hypertensive ADPKD.


Twenty patients with hypertensive ADPKD with good renal function were randomly assigned to 1 of 2 treatments: telmisartan 80 mg once daily (n = 10) or enalapril 10 mg once daily (n = 10). Treatment lasted 12 months. SBP, DBP, serum creatinine, UAE, HMGB1, IL-6 and urinary 8-OHdG levels were measured before and 6 and 12 months after treatment.


Both SBP and DBP were significantly reduced after treatment (P < 0.001) in both groups. Serum creatinine changed little during the experimental period in either group. UAE, serum HMGB1, serum IL-6 and urinary 8-OHdG levels were significantly decreased after treatment (UAE, HMGB1 and IL-6, P < 0.001; and 8-OHdG, P < 0.01 versus baseline levels) in both groups. However, the decreases in UAE, serum HMGB1 and serum IL-6 were significantly greater in the telmisartan group than in the enalapril group at 6 months (P < 0.05, P < 0.01 and P < 0.01, respectively) and 12 months (all, P < 0.05).


Telmisartan seems to be equivalent to enalapril in lowering BP, but telmisartan has more potent renoprotective, anti-inflammatory and antioxidative effects than enalapril in patients with hypertensive ADPKD.

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