Abstract：
:The effects of acute administration of either water or 2% NaCl solution via a stomach tube and injections of diurecits, furosemide (5, 10 mg) and acetazoleamide (5, 20 mg per rat), in adult rats upon urinary kallikrein (Kal), Na and K, were studied. Hyperhydration with water (5% b.w.) produced in 121% increase and 2% NaCl overloading (5% b.w.) 275% increase in urinary Kal within 120 min after gavage, when compared with the excretion of non hyperhydrated rats. Furosemide 5 mg in hyperhydrated animals produced in the same period an excretion of 645 +/- 52 ng BR of Kal, which is 147% higher to that excreted by the hyperhydrated controls. The same dose of furosemide in 2% NaCl loaded rats, produced an excretion of Kal equivalent to 1333 +/- 72 ng BR which is 180% greater than in controls similarly loaded. Acetazoleamide 20 mg and furosemide 5 mg produced similar excretions of Kal even though natriuresis is greater tna kalliuresis is lesser in furosemide injected rats. Evaluation of total kidney Kal has shown that a single (10 mg) or a series of furosemide injections (8 days 5 mg + 1 day 10 mg), brings about a significant (p is less than 0.001) decrease in renal Kal, but the increase of Kal excreted in the urine (120 min) is 3.5 times more (under a single injection) and 42 times more (under 9 injections) than the amount which disappears from the kidneys. Apparently furosemide not only stimulates Kal excretion, but also Kal synthesis in the kidney. The results support the concept that the Kal system would be involved in excretory functions dealing both with sodium and water excretion.
journal_name
Adv Exp Med Bioljournal_title
Advances in experimental medicine and biologyauthors
Croxatto HR,Huidobro F,Rojas M,Roblero J,Albertini Rdoi
10.1007/978-1-4684-3267-1_43subject
Has Abstractpub_date
1976-01-01 00:00:00pages
361-73issue
00eissn
0065-2598issn
2214-8019journal_volume
70pub_type
杂志文章abstract：:Many similarities were observed in the behavioral and neurochemical actions of ethanol and chlordiazepoxide (CDZ) suggesting that these agents may share common mechanisms of action. However, similarities in these actions could not be explained by effects on a benzodiazepine binding site, since only CDZ interacted with...
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