View More View Less
  • 1 Department of Physiology, Medical University 1 “G Sofiiski” str., Sofia 1431, Bulgaria
  • 2 Department of Physiology, Medical University 1 “G Sofiiski” str., Sofia 1431, Bulgaria
  • 3 Department of Physiology, Medical University 1 “G Sofiiski” str., Sofia 1431, Bulgaria
Restricted access

Purchase article

USD  $25.00

1 year subscription (Individual Only)

USD  $752.00

The aim of the present study was to investigate the effects of endogenous endothelin on renal excretory function in spontaneously hypertensive rats (SHR) after inhibition of NO synthesis. The effects of non-selective ETA/ETB receptor blockade on L-NAME-induced changes in renal excretory function and blood pressure (BP) were investigated in conscious, SHR and normotensive Wistar rats with implanted catheters in the bladder for urine collection, in the femoral artery for BP registration and in the femoral vein for L-NAME and bosentan administration. L-NAME increased systolic, mean and diastolic BP, diuresis, sodium and chloride excretion (p<0.01) in both normotensive and hypertensive rats but bosentan returned the values of diuresis, sodium and chloride excretion to control level without any changes in BP in normotensive rats. In SHR the effects of L-NAME were reduced after bosentan (p<0.05) but the values of diuresis, sodium and chloride excretion still remained statistically significant as compared to control level despite the fact that bosentan lowered mean and diastolic BP increased due to L-NAME administration. Endogenous endothelins participate in a different manner in the rise of BP and in the changes in renal excretory function that develops after L-NAME-induced NO synthase inhibition in normotensive rats and in SHR.

Monthly Content Usage

Abstract Views Full Text Views PDF Downloads
Sep 2020 2 0 0
Oct 2020 0 0 0
Nov 2020 8 0 0
Dec 2020 0 0 0
Jan 2021 0 0 0
Feb 2021 0 0 0
Mar 2021 4 0 0