212 POTASSIUM STIMULATION OF ALDOSTERONE IN THE NEWBORN LAMB
نویسندگان
چکیده
منابع مشابه
Ontogeny of Blood Pressure and the Renin - Angiotensin - Aldosterone System Sequential Studies in the Newborn Lamb
To test the hypothesis that the rise in arterial pressure occurring with maturation is due to an increase in the vascular responsiveness to angiotensin II, sequential cumulative doses of angiotenmn II were infused intravenously into chronically catheterized newborn lambs maintained on a constant, weight-adjusted sodium intake from birth to 8 weeks of age. Basal mean arterial pressure correlated...
متن کاملOntogeny of blood pressure and the renin-angiotensin-aldosterone system. Sequential studies in the newborn lamb.
To test the hypothesis that the rise in arterial pressure occurring with maturation is due to an increase in the vascular responsiveness to angiotensin II, sequential cumulative doses of angiotensin II were infused intravenously into chronically catheterized newborn lambs maintained on a constant, weight-adjusted sodium intake from birth to 8 weeks of age. Basal mean arterial pressure correlate...
متن کاملSite of stimulation of aldosterone biosynthesis by angiotensin and potassium.
Studies were undertaken to determine what part of the aldosterone biosynthetic pathway is stimulated by angiotensin and potassium. The availability of a method for isolating the early portion of the aldosterone pathway and a new method for measuring plasma deoxycorticosterone permitted the design of experiments to determine whether angiotensin and potassium stimulate the pathway before deoxycor...
متن کاملInfluence of sympathetic nerve stimulation on ventricular function in the newborn lamb.
Cardiac responses to supramaximal electrical stimulation of postganglionic sympathetic nerve fibers were studied in 17 lambs, 10 hours to 3 days of age. In all lambs left ventricular contractility increased within 3 seconds and was unaltered by atropine, ganglionic blockade, or nerve sectioning proximal to the stimulating electrodes but was abolished by beta-receptor blockade. The responses wer...
متن کاملRole of angiotensin II in potassium-mediated stimulation of aldosterone secretion in the dog.
Potassium is known to enhance the aldosterone-stimulating action of angiotensin II. Such a synergistic interaction of potassium with angiotensin II could represent an action by angiotensin II to potentiate potassium as a stimulus. To examine for this effect of angiotensin II on potassium, plasma aldosterone levels were measured before and after an infusion of potassium chloride (15 meq i.v.) in...
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ژورنال
عنوان ژورنال: Pediatric Research
سال: 1978
ISSN: 0031-3998,1530-0447
DOI: 10.1203/00006450-197804001-00217