ISSN:
1573-7241
Keywords:
ultrasonics
;
angiotensin
;
cardiomyopathy
;
remodeling
Source:
Springer Online Journal Archives 1860-2000
Topics:
Medicine
Notes:
Abstract This study delineates the role of angiotensin II type I (AT1) receptor in the remodeling of Syrian cardiomyopathic hamsters. Twelve cardiomyopathic (T0-2) hamsters received L-158,809 treatment ad libitum in their drinking water (27 µg/ml) and 9 cardiomyopathic and 9 normal F1-B hamsters received tap water from 1 to 4 months of age. Although pharmacologically effective with regard to complete suppression of the blood pressure response to angiotensin II infusion, L-158,809 did not diminish the progression or severity of cardiomyopathy. Heart weight/100 g body weight and left ventricular wall thickness adjusted for body weight of both L-158,809 and cardiomyopathic control hamsters did not differ and exceeded those of F1-B controls (p 〈 0.05). Myocardial material properties (e.g., stiffness and density) of cardiomyopathic hamsters treated with L-158,809 were not affected. Thus, the progression of fibrosis, calcification, and necrosis in T0-2 cardiomyopathic hamsters was not sensitive to AT1 receptor blockade.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1023/A:1007706930979
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