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The effect of a 4 hr upright posture on serum potassium (SK) levels was investigated in a certain group of hospitalized renal patients with selective hypoaldosteronism and in healthy subjects. Significant (p less than 0.001) postural increase in SK (0.4 MMol/L) was found only in the 3 young patients
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Atrial natriuretic peptide (ANP) has been shown to suppress aldosterone secretion under certain circumstances, although the physiological significance of this is uncertain. We wondered if ANP would suppress potassium-stimulated aldosterone secretion in man and, if so, whether we might find high
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The diagnosis of hypoaldosteronism usually depends upon a combination of abnormal clinical and laboratory findings. The most common abnormality in hypoaldosteronism is hyperkalemia, which may be combined with sodium depletion. In the present study, 5 of 16 patients diagnosed with isolated
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Potassium and sodium contents in the various adrenal zones were determined in experimental hyper- and hypoaldosteronism in the rat by electron probe X-ray microanalysis. The analysis aimed at revealing intracellular values. There was no change in the potassium content of the zona glomerulosa, zona
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Streptozotocin-induced chronic diabetic rats develop hyporeninemic hypoaldosteronism. The hypoaldosteronism is associated with selective unresponsiveness of aldosterone to angiotensin II (AII) and an atrophy of the zona glomerulosa. To assess the nature of the adrenal unresponsiveness to AII, we
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The present work studies the urinary excretion of PGE2 and PGI2 (6-keto PGF 1 alpha) in 11 insulin-dependent diabetic patients with chronic renal failure with a glomerular filtration rate of 33.9 +/- 9.03 ml/min who had hyporeninaemic hypoaldosteronism to evaluate the influence of these
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Aldosterone participates in blood volume and serum potassium homeostasis, which in turn regulate aldosterone secretion by the zona glomerulosa of the adrenal cortex. Autonomous aldosterone hypersecretion leads to hypertension and hypokalemia. Improved screening techniques have led to a re-evaluation
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Hypoaldosteronism (HA) is a condition marked by decreased synthesis or diminished release of aldosterone (ALD) from the zona glomerulosa of the adrenal glands, or resistance to its action on target tissues. In conditions of resistance, aldosterone levels are often elevated and termed
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This study was aimed at investigating the mechanisms of clinically important overt hyperkalemia in diabetes mellitus with underlying hyporeninemic hypoaldosteronismknown as a classic model of the syndrome of hyporeninemic hypoaldosteronism (SHH). Rats (Sprague-Dawley, male) were
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OBJECTIVE
Hyperkalaemia is a common feature in hospitalized patients and often attributed to drugs antagonizing the renin-angiotensin-aldosterone system (RAAS) and/or acute kidney injury (AKI), despite significantly preserved glomerular filtration rate (GFR). The objective of this study was to
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A 62-yr-old diabetic woman exhibited low plasma and urinary aldosterone levels in the face of markedly elevated PRA during the course of nonketoacidotic hyperglycemic precoma with dehydration, hyponatremia, and hyperkalemia, for which she was hospitalized. Studies performed after her recovery from
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The pathogenesis of acquired hypoaldosteronism, a frequent cause of hyperkalemia in patients with chronic renal failure, is poorly understood. The present studies were undertaken to investigate the role of dopamine in suppressing mineralocorticoid secretion in this syndrome. We studied the plasma
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During long-term treatment of arterial hypertension with calcium antagonists of the dihydropyridine type activation of the sympathetic nervous system and subsequently also of the renin-angiotensin-aldosterone system persists, while the haemodynamic reaction to vasodilatation, manifested by an
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METHODS
Primary hypoaldosteronism without concurrent hypoadrenocorticism was diagnosed in an 8-year-old female alpaca with acute onset of weakness progressing to recumbency within 6 hours after onset.
RESULTS
Hematologic testing at admission revealed profound hyponatremia, hypochloremia, and
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