Abstract:
:The interaction between renal nerves, endothelins acting via endothelin-A receptors and vasopressin in the regulation of renal excretory function was investigated. In conscious intact and renal denervated diabetes insipidus (DI) Brattleboro rats, as well as their controls, Long-Evans (LE) rats, an infusion of 16.4 nmol/kg/min ET(A) receptor antagonist BQ-123 was performed in the course of 50 min. Femoral artery blood pressure, heart rate, Ccr, V x U(Na), V x U(K) and V x U(Cl) did not alter in any of the groups. Urine flow rate diminished by 38.1% (p < 0.02), while urine osmolality increased by 30.3% (p < 0.05) as a result of BQ-123 infusion in the intact LE rats but neither urine flow rate nor urine osmolality changed in the DI rats. In contrast to intact LE rats, BQ-123 infusion in renal denervated LE rats did not alter urine flow rate or urine osmolality. However, urine flow rate in renal denervated DI rats surprisingly decreased by 71.1% (p < 0.01) while urine osmolality increased by 161% (p < 0.001) as a result of BQ-123 infusion. Endogenous endothelins can regulate renal water excretion through ET(A) receptor activation. Renal sympathetic nerves participate in the modulation of renal water excretion influencing the ET(A) receptor-mediated effects of endothelins in the kidney.
journal_name
Kidney Blood Press Resjournal_title
Kidney & blood pressure researchauthors
Girchev R,Markova P,Mikhov D,Avramova T,Nattcheff Ndoi
10.1159/000054199keywords:
subject
Has Abstractpub_date
2001-01-01 00:00:00pages
5-9issue
1eissn
1420-4096issn
1423-0143pii
54199journal_volume
24pub_type
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journal_title:Kidney & blood pressure research
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journal_title:Kidney & blood pressure research
pub_type: 杂志文章,随机对照试验
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更新日期:2007-01-01 00:00:00
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更新日期:2017-01-01 00:00:00
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journal_title:Kidney & blood pressure research
pub_type: 杂志文章,meta分析,评审
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更新日期:2016-01-01 00:00:00
abstract::Progressive renal disease poses an increasing problem for the medical community. Though the causes of end-stage renal failure are multiple, the histologic pictures of chronic renal disease are remarkably similar being characterized by interstitial infiltration, fibrosis, tubular atrophy and dilatation. This similarity...
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pub_type: 杂志文章,评审
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更新日期:1999-01-01 00:00:00