Genetic Determinant of Blood Pressure Sensitivity to Salt Intake

Clinical, Pharmacological and Biological Investigations of a Polymorphism of Nedd4 , a Regulatory Protein of the Epithelial Sodium Channel

Nedd4.2 is a regulator of ENac, a transporter of sodium involved in the regulation of salt retention by the kidney. The study address the consequence of a frequent genetic variation leading expected to impact the function of Nedd4 and in turn, the ability of kidneys to excrete salt intake. Our hypothesis is that the genetic variants of Nedd4.2 could constitute a genetic predisposition to (or protection against) salt-sensitive hypertension.

Subjects were submitted one week to a low sodium-high potassium diet, and then switch to a high sodium,-low potassium diet for two weeks. the last week, subject were taken a 20 MG daily dose of amiloride, a potassium sparing diuretic.

Inclusion Criteria:

• healthy volunteers
• between 18 and 35 years odl
• BMI between 18 and 28 Kg per m2
• non smokers
• no active disease
• no alcool or drug abuse