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Eleven primiparae (aged from 20 to 31 years) have been sampled at the time of partum and throughout the puerperium for simultaneous determinations of plasma levels of inactive (prorenin) and active (PRA) renins, aldosterone (PA) and cortisol (PC). Biodata have been compared to time-qualified values obtained in non-pregnant adult women (aged from 17 to 37(More)
Five male and 5 female clinically healthy volunteers, 17-37 years of age, gave systemic venous blood at 0600, 0800, 1200, 1800, 2000 and 0000 for RIA of (supine values) plasma renin-angiotensin (PRA) and aldosterone (PA) under 4 conditions: a. unrestricted sodium intake, no treatment; b. unrestricted sodium intake and 40 mg propranolol per os every 6 h; c.(More)
This study investigated the changes in circadian rhythms of plasma renin activity (PRA) and plasma aldosterone (PA) which occur in essential mesor-hypertensive women, increasing in age. Systemic blood samples were taken throughout a 12 h period from both mesor-hypertensive women and clinically healthy women (control). The women in each group were either(More)
Five men and 8 women, 60-69 yr of age, and 4 men and 5 women, 17-37 yr of age, volunteered for this exploration of possible age-related changes in circadian-rhythm (CR) characteristics of radioimmunoassayable plasma renin (PRA) and aldosterone (PA). Blood was drawn at 06.00, 08.00, 12.00, 18.00, 20.00 and 24.00 from recumbent subjects on a habitual sodium(More)