Male rats were exposed to single or repeated (19 days) cold treatment (4°C) and non-cold stress (60-min shaking on a laboratory shuttle device). Retabolil had a hypotensive effect, which was accompanied by the prevention of a stress-induced increase in the concentration of a hypertensive hormone aldosterone. Under conditions of repeated stress, these effects were realized via μ-opioid receptors. Our results suggest that retabolil can be used as a hypotensive and aldosterone-blocking agent, at least during stress exposure in animals (and probably in humans).
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http://dx.doi.org/10.1007/s10517-014-2532-y | DOI Listing |
Can J Physiol Pharmacol
November 2015
b Department of Physiological Sciences, Health Sciences Center, Federal University of Espírito Santo, Av. Marechal Campos, 1468, Vitória, Espírito Santo 29042-755, Brazil.
This study evaluated the effects of nandrolone associated with resistance training (RT) on cardiac cytokines, angiotensin-converting enzyme activity (ACEA), and the sensitivity of the Bezold-Jarisch reflex (BJR). Male Wistar rats were divided into 3 groups: CONT (received vehicle, no training); EXERC (RT: after one week of water adaptation, rats were exercised by jumping into water twice a week for 4 weeks), and ND+EXERC (received nandrolone decanoate 10 mg/kg, twice/week, i.m, associated with RT).
View Article and Find Full Text PDFBull Exp Biol Med
June 2014
Research Institute of Clinical Immunology, Siberian Division of the Russian Academy of Medical Sciences, Novosibirsk, Russia.
Male rats were exposed to single or repeated (19 days) cold treatment (4°C) and non-cold stress (60-min shaking on a laboratory shuttle device). Retabolil had a hypotensive effect, which was accompanied by the prevention of a stress-induced increase in the concentration of a hypertensive hormone aldosterone. Under conditions of repeated stress, these effects were realized via μ-opioid receptors.
View Article and Find Full Text PDFThe experiments were performed on male rats, which were subjected to single and multiply repeated vibrations (low-frequency, horizontal, high-amplitude) analogous to the action of motor transport vibrations. It is established that the administration of retabolil produces a hypotensive effect and blocks the vibration-induced increase in the level of hypertensive hormone aldosterone. Under conditions of the multiply repeated action of vibrations, both effects were realized via micro-opioid receptors.
View Article and Find Full Text PDFCardiovasc Drugs Ther
April 2014
Laboratório de Eletrofisiologia Cardíaca Antonio Paes de Carvalho, Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Av. Carlos Chagas Filho, 373, CCS, Bloco G, 21.941-902, Rio de Janeiro, Brazil.
Purpose: Myocardial tolerance to ischaemia/reperfusion (I/R) injury is improved by exercise training, but this cardioprotection is impaired by the chronic use of anabolic androgenic steroids (AAS). The present study evaluated whether blockade of angiotensin II receptor (AT1-R) with losartan and aldosterone receptor (mineralocorticoid receptor, MR) with spironolactone could prevent the deleterious effect of AAS on the exercise-induced cardioprotection.
Methods And Results: Male Wistar rats were exercised and treated with either vehicle, nandrolone decanoate (10 mg/kg/week i.
Steroids
March 2013
Department of Pharmacy, University of Vila Velha, Espírito Santo, Brazil.
The aims of this study were to evaluate the effects of nandrolone (ND) on cardiac inflammatory cytokines, ACE activity, troponin I, and the sensitivity of the Bezold-Jarisch reflex (BJR). Male Wistar rats were administered either ND (20 mg/kg; DECA) or vehicle (control animals; CONT) for 4 weeks. BJR was analyzed by measuring the bradycardia and hypotension responses elicited by serotonin administration (2-32 μg/kg).
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