Combination of testosterone and vardenafil increases female sexual functioning in sub-primed rats.
J Sex Med
; 8(4): 989-1001, 2011 Apr.
Article
em En
| MEDLINE
| ID: mdl-21235726
ABSTRACT
INTRODUCTION:
Hypoactive sexual desire disorder (HSDD) is a common problem in women and may have a negative impact on quality of life. A recent clinical study shows an increase in sexual drive of HSDD women after cotreatment of testosterone and vardenafil (phosphodiesterase type 5 inhibitor).AIM:
In this study, we investigated the effect of testosterone and vardenafil on sexual activity in female rats. MAIN OUTCOMEMEASURES:
Proceptive (darts and hops), receptive (lordosis), and paced-mating (percentages after exits and contact-return latencies) behaviors were quantified.METHODS:
Ovariectomized female rats, sub-primed with only estradiol and fully primed with estradiol and progesterone, were tested in a paced-mating sex test and sexual behaviors were quantified. The sub-primed rats are thought to model HSDD. The effect of testosterone (100 and 300 µg, subcutaneous [SC]) and vardenafil (10 mg/kg, per os [PO]) alone and testosterone (300 µg, SC) in combination with vardenafil (3 and 10 mg/kg, PO) were tested. We also studied the effects of testosterone (300 µg, SC) + intracerebroventricular (ICV) injections of vardenafil (25 and 50 µg) on sexual activity.RESULTS:
No effect of testosterone and vardenafil alone was found, but cotreatment of testosterone and vardenafil (PO) caused a significant increase in proceptive and receptive behavior in the sub-primed female rats. Testosterone and vardenafil did not affect fully primed females. ICV administration of vardenafil combined with systemic testosterone, on the other hand, had no effect on sexual activity in both sub-primed and fully primed female rats.CONCLUSIONS:
We conclude that cotreatment of subcutaneous testosterone and oral vardenafil increase sexual activity in sub-primed female rats. Our data supports the human finding that combination treatment of testosterone and vardenafil could be used as a new treatment for women with HSDD.
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Piperazinas
/
Comportamento Sexual Animal
/
Testosterona
/
Vasodilatadores
/
Inibidores da Fosfodiesterase 5
/
Imidazóis
/
Androgênios
Tipo de estudo:
Prognostic_studies
Limite:
Animals
Idioma:
En
Ano de publicação:
2011
Tipo de documento:
Article