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  • Title: Effect of acute water loading on urinary excretion of prostaglandin E in hypertensive patients.
    Author: Sato M, Abe K, Haruyama T, Sato K, Yasujima M, Imai Y, Hiwatari M, Kasai Y, Tajima J, Itoh S, Seino M, Chiba S, Goto T, Yoshinaga K.
    Journal: Prostaglandins Leukot Med; 1982 May; 8(5):517-24. PubMed ID: 6954553.
    Abstract:
    To assess the relationship or urine flow to the urinary excretion of prostaglandin E (PGE), urinary excretion of PGE was measured before and after acute water loading (20 ml/kg orally) in patients with hypertension. Water loading promptly increased urinary excretion of PGE as well as urine flow rate and decreased urine osmolality (all p less than 0.001), but did not affect urinary excretions of sodium, potassium and creatinine, plasma renin activity and plasma aldosterone concentration. There was a significant positive correlation between urine flow rate and urinary PGE excretion rate (p less than 0.01). Urinary PGE concentration correlated negatively with urine flow rate when the flow was lower than 5 ml/min (p less than 0.01). Urinary PGE concentration correlated negatively with urine flow rate when the flow was lower than 5 ml/min (p less than 0.01), whereas it did not change when the urine flow rate was larger than 5 ml/min. These results may support the hypothesis that urinary excretion of PGE is determined mainly by urine flow rate in the situation of water diuresis.
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