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kidney papillary necrosis/potássio
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Natriuresis obtained by intracerebroventricular infusion of hypertonic NaCl in rats with papillary necrosis.
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Raising the sodium concentration in the third cerebral ventricle increases renal sodium, potassium and water excretion. The identification and characterization of the factor(s) mediating the centrally evoked natriuresis would be greatly facilitated if the exact intrarenal effector site were known.
Pathophysiology of drug-induced papillary necrosis.
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Papillary necrosis, a common cause of renal failure, is a life-threatening pathophysiologic event which may have a multiplicity of mechanisms. The primary functional lesions are salt wastage, impairment of urinary concentrating ability, polyuria, and imbalances of potassium, calcium and phosphate
Functional characterization of drug-induced experimental papillary necrosis.
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The functional expression of papillary necrosis was investigated with a model of drug-induced papillary necrosis. Bromoethylamine hydrobromide (BEA) administration to rats uniformly resulted in the development of papillary necrosis. All studies were performed 24 hours after BEA administration with
Renal failure and upper urinary tract obstruction after retrograde pyelography with potassium bromide solution.
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Two iodine-sensitive women in whom potassium bromide solution was used as a radiocontrast agent for retrograde pyelography developed similar clinical conditions culminating in renal failure. Renal failure was due to upper urinary tract obstruction from fibrosis and fat necrosis in each case. Similar
The kidney in sickle cell anemia.
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New insights into the physical chemistry and molecular epidemiology of sickle cell anemia have improved our understanding of the pathophysiology of the associated nephropathy, the predictors of this complication, and genetic and other factors that may modify it. In this article, we analyze the
Characterization of renal defects in dogs with a syndrome similar to the Fanconi syndrome in man.
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Ten adult dogs with multiple spontaneous defects of renal tubular reabsorption were studied. Clinical signs included polydipsia, polyuria, and glycosuria for 2 to 12 months. Eight of the dogs were Basenjis. Urinalyses revealed hyposthenuria, glycosuria, and amino aciduria in most dogs. Renal
[A 13-week subacute oral toxicity study of 6-amidino-2-naphthyl 4-[(4,5-dihydro-1H-imidazol-2-yl) amino] benzoate dimethanesulfonate (FUT-187) in rats].
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The toxicity of FUT-187, a synthetic protease inhibitor, was investigated in Sprague-Dawley rats. FUT-187 was given orally to the rats at doses of 2, 10, 50, 250 and 1250 mg/kg/day for 13 weeks, then the drug was withdrawn for 5 weeks for recovery. The results are summarized as follows: In the 1250
Does aspirin cause acute or chronic renal failure in experimental animals and in humans?
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There are conflicting reports on the ability of aspirin as a single agent to cause acute or chronic renal failure in experimental animals. Chronic administration of aspirin alone over 18 to 68 weeks in doses of 120 to 500 mg/kg/d has been reported to cause renal papillary necrosis in rats. However,
Renal abnormalities in sickle cell disease.
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Renal abnormalities in sickle cell disease. Sickle cell nephropathy is indicated by sickled erythrocytes, with the consequent effects of decreased medullary blood flow, ischemia, microinfarct and papillary necrosis. Impaired urinary concentrating ability, renal acidification, hematuria, and
Acute renal failure from hemoglobinuric and interstitial nephritis secondary to iodine and mefenamic acid.
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Mefenamic acid ingestion, usually in excess and over prolonged period is known to produce interstitial nephritis, or less commonly papillary necrosis, with acute renal failure. However, it is not dose-dependent for the induction of tubulointerstitial damage. Excess iodine ingestion is known to
An update on sickle cell nephropathy.
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Sickle cell disease (SCD) is a major health problem in many countries. Sickle cell nephropathy (SCN) is now a well-characterized entity with specific manifestations, risk factors and prognosis. The presence of sickled erythrocytes in the renal medullary vessels is the hallmark of the disease with a
Renal complications of sickle cell disease: managing for optimal outcomes.
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A broad spectrum of renal changes is observed in patients with sickle cell anemia, and ideal therapeutic measures for the management of these alterations are still being studied. Affected patients have deficient urinary concentration and potassium excretion. Perhaps owing to a compensatory
Renal abnormalities in sickle cell disease.
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Sickle cell anemia and the related hemoglobinopathies are associated with a large spectrum of renal abnormalities. The patients have impaired urinary concentrating ability, defects in urinary acidification and potassium excretion, and supranormal proximal tubular function. The latter is manifest by
Familial renal amyloidosis in Abyssinian cats.
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Medullary and glomerular amyloidosis, papillary necrosis, and secondary interstitial disease were diagnosed in eight related adult Abyssinian cats from two catteries. The lesions were similar to those in two unrelated mongrel cats with renal amyloidosis. Ultrastructurally, the patterns of amyloid
Renal abnormalities in sickle cell disease.
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Many renal structural and functional abnormalities have been associated with sickle cell disease. The patients have an impaired urinary concentrating ability but an intact diluting capacity. There are defects in both urinary acidification and potassium excretion, although overt metabolic acidosis
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