| Full text | |
| Author(s): |
Simao, Vinicius Augusto
;
de Almeida Chuffa, Luiz Gustavo
;
Cherici Camargo, Isabel Cristina
Total Authors: 3
|
| Document type: | Journal article |
| Source: | Reproduction; v. 152, n. 5, p. 545-559, NOV 2016. |
| Web of Science Citations: | 3 |
| Abstract | |
This study evaluated for the first time the effects of different doses of the anabolic steroid nandrolone decanoate (ND) on the expression of ovarian steroid receptors (AR, ER-alpha (ESR1) and ER-beta (ESR2)) and related sex hormones after treatment and recovery periods in adult rats. The animals were injected subcutaneously with doses of ND (1.87, 3.75, 7.5 or 15 mg/kg b.w.) or mineral oil (control group) for 15 days, and the experimental groups were divided into three periods of evaluation: (a) ND treatment for 15 days, (b) ND treatment and recovery for a period of 30 days and (c) ND treatment and recovery for a period of 60 days. Estrous cycle was monitored daily. At the end of each period, rats were killed for collection of blood and ovaries. Persistent diestrus occurred in all rats during ND treatment and after 30-day recovery. The highest dose of ND was able to maintain all rats arrested at diestrus until 60-day recovery. The expression of steroid receptors varied in a dose-and period-dependent manner, having a more pronounced response with the dose of 15 mg ND/kg. ND treatment increased serum levels of testosterone, 17 beta-estradiol and dihydrotestosterone, especially at the highest doses of 7.5 and 15 mg ND/kg. No change was observed in the levels of follicle-stimulating hormone (FSH), whereas levels of the luteinizing hormone (LH) varied according to the dose and period. In conclusion, the ovarian sex steroid receptors and sex hormones were restored only at lower doses of ND and after a longer period of recovery. (AU) | |
| FAPESP's process: | 13/14510-0 - Hormonal analysis, immunolocalization and quantification of the androgen and estrogen receptors in the ovaries of rats submitted to different doses of nandrolone decanoate: assessment in the post-treatment and post-recovery periods |
| Grantee: | Isabel Cristina Cherici Camargo |
| Support Opportunities: | Regular Research Grants |
| FAPESP's process: | 12/01747-0 - Dose-dependent effect and recovery period of Wistar rats treated with nandrolone decanoate: evaluation on the estrous cycle and ovarian and uterine histology |
| Grantee: | Vinicius Augusto Simao |
| Support Opportunities: | Scholarships in Brazil - Scientific Initiation |