11.THE EFFECT OF LONG-TERM ADMINISTRATION OF HYDROCHLOROTHIAZIDE ON CENTRAL BLOOD PRESSURE

2009 ◽  
Vol 3 (3) ◽  
pp. 97
Author(s):  
Yang Qian ◽  
Jiang Xiongjing ◽  
Zhang Yuqing ◽  
Liu Lisheng
1989 ◽  
Vol 256 (5) ◽  
pp. E682-E685 ◽  
Author(s):  
M. Kalimi

This study was conducted to investigate whether hypertension induced by long-term in vivo administration of dexamethasone in rats could be prevented by the newly synthesized potent antiglucocorticoid drug RU 486. Subcutaneous implantation of 5 mg of dexamethasone pellets in Sprague-Dawley rats resulted in a rapid increase in the blood pressure that remained elevated during the 3 wk of experimental observation. RU 486 (50 mg) administered alone surprisingly showed slight elevation of blood pressure over untreated control animals. However, the blood pressure leveled off to control levels over the next 2 wk. Interestingly, a 50-mg RU 486 pellet implanted along with 5 mg of dexamethasone effectively prevented the dexamethasone-induced increase in blood pressure. RU 486 administered together with dexamethasone prevented dexamethasone-induced diuresis and urinary Na+ excretion. However, RU 486 was unable to reverse the weight loss or involution of thymus observed by long-term treatment with dexamethasone alone. No abnormalities were found in either kidneys or hearts in any of the treated groups under microscopic examination. These results suggest that RU 486 successfully prevented the hypertension produced by the long-term administration of dexamethasone in male Sprague-Dawley rats.


1978 ◽  
Vol 55 (s4) ◽  
pp. 293s-295s ◽  
Author(s):  
H. R. Brunner ◽  
H. Gavras ◽  
G. A. Turini ◽  
B. Waeber ◽  
P. Chappuis ◽  
...  

1. Captopril or SQ 14 225, administered orally twice a day, reduced the blood pressure of hypertensive patients whatever their clinical diagnosis and even when their plasma renin activity was ‘normal’ or low. 2. Long-term administration of captopril, either alone or together with diuretics, provides a powerful new tool with which to treat ambulatory hypertensive patients. 3. The renin system may play an important role in maintaining blood pressure in a majority of hypertensive patients.


Sign in / Sign up

Export Citation Format

Share Document