Abstract

DIEZ OJEA, B. et al. Clinical and genetic bases of hypertensive nephrosclerosis: NEFROSEN Study. Nefrología (Madr.) [online]. 2010, vol.30, n.6, pp.687-697. ISSN 1989-2284.

Background: Hypertensive nephrosclerosis is a chronic kidney disease (CKD) associated to essential hypertension. The lack of correlation between strict control of hypertension and progression of CKD suggests an intrinsic and primary disease. New evidence suggests that MYH9 gene alterations are associated with nephrosclerosis in African Americans. The aim of this study is to investigate whether a polymorphism of MYH9 in Caucasians is linked to the association of essential hypertension and nephrosclerosis. The secondary objective is to identify the clinical risk factors of progression to end-stage renal disease (ESRD). This is a retrospective study that will compare patients with nephrosclerosis versus essential hypertensives without renal disease, and also patients with nephrosclerosis and impaired renal function versus those that are stable. Methods: Between October 2009 and October 2010, 500 patients stages 3-5 CKD attributed to nephrosclerosis according to usual clinical criteria, and 300 essential hypertensives (eGFR > 60 mL/min/1.73m²; microalbuminuria <300 mg/g) will be recruited. 200 healthy controls from general population will also be included for the genetic study. There will be two sections of the study, first and final visit to the clinic (stage 5, the start of replacement therapy will be the end of follow-up). Clinical and laboratory data will be recorded, and blood samples will be collected. Discussion: Our study will seek to determine if there exists a relationship between the diagnosis of nephrosclerosis and MYH9 gene in the Caucasian race, and to study possible risk factors for progression to ESRD, on both clinical and genetic basis.

Keywords : Hypertensive nephrosclerosis; Essential hypertension; MYH9 gene; Chronic kidney disease.

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