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World J Nephrol. 2013 Nov 6;2(4):125-8. doi: 10.5527/wjn.v2.i4.125.

Vascular response to vasodilator treatment in microalbuminuric diabetic kidney disease.

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1
Narisa Futrakul, Faculty of Medicine, King Chulalongkorn Memorial Hospital, Chulalongkorn University, Bangkok 10330, Thailand.

Abstract

Under common practice, the conventional diagnostic marker such as microalbuminuria determination does not recognized early stage of diabetic kidney disease (normoalbuminuria, chronic kidney disease stage 1, 2); due to the insensitiveness of the available marker. Treatment at later stage (microalbuminuria) simply slows the renal disease progression, but is rather difficult to restore the renal perfusion. Intrarenal hemodynamic study in these patients revealed an impaired renal perfusion and abnormally elevated renal arteriolar resistances. Treatment with vasodilators such as angiotensin converting enzyme inhibitor and angiotensin receptor blocker fails to correct the renal ischemia. Recent study on vascular homeostasis revealed a defective mechanism associated with an impaired nitric oxide production which would explain the therapeutic resistance to vasodilator treatment in microalbuminuric diabetic kidney disease. This study implies that the appropriate therapeutic strategy should be implemented at earlier stage before the appearance of microalbuminuria.

KEYWORDS:

Diabetic kidney disease; Fractional excretion of magnesium; Microalbuminuria; Renal function; Renal hemodynamics

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