We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Role of the renin-angiotensin system in the nandrolone-decanoate-induced attenuation of the Bezold-Jarisch reflex.
- Authors
Uggere de Andrade, Tadeu; Loiola, Leonardo Zanoteli; Alcure, Samira Merces Nascimento; Medeiros, Ana Raquel Santos; Santos, Maria Carmen Lopes Ferreira Silva; Moysés, Margareth Ribeiro; Abreu, Gláucia Rodrigues de; Lenz, Dominik; Bissoli, Nazaré Souza
- Abstract
The androgen nandrolone decanoate (ND) is known to cause cardiovascular abnormalities, such as attenuation of the Bezold-Jarisch Reflex (BJR), cardiac hypertrophy, and elevation of mean arterial pressure (MAP). Futhermore, a relationship between androgens and the renin-angiotensin system (RAS) has been reported. The purpose of this study was to evaluate the influence of RAS on the BJR, cardiac and prostatic hypertrophy, and MAP evoked by ND. For this, male Wistar rats were treated with ND (10 mg·(kg body mass)-1 for 8 weeks; DECA), or vehicle (control animals; CON), or enalapril (10 mg·(kg body mass)-1, daily; CONE), or ND and enalapril (10 mg ND + 10 mg enalapril per kilogram of body mass; DECAE). After 8 weeks of treatment, the BJR was evaluated by bradycardia and hypotensive responses that were elicited by serotonin administration (2-32 µg·(kg body mass)-1). MAP was assessed; cardiac and prostate hypertrophy were determined by the ratio of the tissue mass:body mass, and by histological analysis of the heart. Animals from the DECA group showed prostatic and cardiac hypertrophy, elevation in mean arterial pressure, and an impairment of BJR. Co-treatment with enalapril inhibited these changes. The data from the present study suggest that RAS has an impact on BJR attenuation, cardiac and prostatic hypertrophy, and the elevation in MAP evoked by ND.
- Subjects
RENIN-angiotensin system; NANDROLONE; ETIOLOGY of diseases; CARDIOVASCULAR system abnormalities; CARDIAC hypertrophy; BODY mass index; LABORATORY rats
- Publication
Canadian Journal of Physiology & Pharmacology, 2011, Vol 89, Issue 12, p891
- ISSN
0008-4212
- Publication type
Article
- DOI
10.1139/y11-090