Résumé
The relationships of the quality and quantity of dietary protein, the level of fasting serum and 8-hour overnight urine free amino acids and blood pressure were studied in three natural Chinese populations. The results showed that the ratio of dietary animal protein/total dietary protein, the ratio of dietary protein/dietary sodium, serum and urine taurine, lysine etc were inversely associated with blood pressure significantly. Alanine was positively associated with blood pressure. Most serum free amino acids were positively correlated with the ratio of dietary protein/dietary sodium. Urine taurine, lysine and asparagine were positively correlated with dietary protein, dietary and urine sodium significantly. These results suggested that high quality protein which is rich in taurine, lysine etc might prevent hypertension.