title: Na-K ATPase activity of erythrocyte membrane correlated with urinary Na/K ratio in normotensive adolescents with a family history of hypertension.
abstract: In female adolescents with a normal blood pressure range, the correlation between urinary sodium excretion and Na-K ATPase activity of erythrocyte membrane was investigated. 34 subjects with a family history of hypertension showed a significantly positive correlation between body mass index and mean blood pressure (r = 0.64, p less than 0.01), and a significantly lower urinary Na/Cr and Na/K ratio compared with 37 subjects without the same family history (p less than 0.05 and p less than 0.01, respectively). The positive correlation between urinary Na/K ratio and Na-K ATPase activity of erythrocyte membrane was demonstrated in only subjects with a family history of hypertension (r = 0.41, p less than 0.05). The authors discuss these significant correlations in terms of the abnormal membrane cation fluxes associated with essential hypertension.
mesh_terms: D000293:Adolescent; D000328:Adult; D000367:Age Factors; D001794:Blood Pressure; D003404:Creatinine / Q000097:blood; D004910:Erythrocyte Membrane / Q000201:enzymology*; D005260:Female; D006801:Humans; D006973:Hypertension / Q000097:blood / Q000235:genetics* / Q000503:physiopathology; D011188:Potassium / Q000652:urine*; D012964:Sodium / Q000652:urine*; D000254:Sodium-Potassium-Exchanging ATPase / Q000097:blood*
chemical_list: D012964:Sodium; D003404:Creatinine; D000254:Sodium-Potassium-Exchanging ATPase; D011188:Potassium