ABSTRACT
OBJECTIVE@#To evaluate the effects of aqueous and methanolic extracts of Bersama engleriana (B. engleriana) leaves on the expulsion phase of fictive ejaculation in nicotinamide/streptozotocin-induced type 2 diabetic male rats.@*METHODS@#The electromyographic activity of the bulbospongiosus muscles was recorded in urethane anaesthetized, spinal cord transected rats receiving dopamine (0.1 μmol/L/kg) intravenously, in the absence or presence of aqueous and methanolic extracts of B. engleriana (2.5, 10, 50, 60, 75 mg/kg). In another experiment, the pro-ejaculatory effect of dopamine (0.1 μmol/L/kg, i.v.) was monitored in rats orally pre-treated with the aqueous and methanolic extracts (60 mg/kg) of B. engleriana for 1 or 4 weeks.@*RESULTS@#Results of the study showed that the intravenous administration of B. engleriana did not provoke any contraction of the ejaculatory muscles whilst rhythmic and rapid contractions of the bulbospongiosus muscles accompanied sometimes by penis movement and expulsion of the urethral contents were recorded after dopamine application. The sequential treatment of animals with B. engleriana extracts (2.5-75.0 mg/kg) followed by dopamine (0.1 μmol/L/kg) resulted in a dose-dependent abolishment of the pro-ejaculatory response due to dopamine. However, in animals orally submitted to a daily gavage with B. engleriana extracts (60 mg/kg) for 1 or 4 weeks, the ejaculation stimulating effect of dopamine (0.1 μmol/L/kg) was significantly delayed (P<0.01) but not completely suppressed.@*CONCLUSIONS@#Present findings suggest the involvement of dopaminergic system in the activity of B. engleriana and further support its aphrodisiac potentials due to sterols and saponins revealed in this plant.
ABSTRACT
Objective: To evaluate the effects of aqueous and methanolic extracts of Bersama engleriana (B. engleriana) leaves on the expulsion phase of fictive ejaculation in nicotinamide/streptozotocin-induced type 2 diabetic male rats. Methods: The electromyographic activity of the bulbospongiosus muscles was recorded in urethane anaesthetized, spinal cord transected rats receiving dopamine (0.1 μmol/L/kg) intravenously, in the absence or presence of aqueous and methanolic extracts of B. engleriana (2.5, 10, 50, 60, 75 mg/kg). In another experiment, the pro-ejaculatory effect of dopamine (0.1 μmol/L/kg, i.v.) was monitored in rats orally pre-treated with the aqueous and methanolic extracts (60 mg/kg) of B. engleriana for 1 or 4 weeks. Results: Results of the study showed that the intravenous administration of B. engleriana did not provoke any contraction of the ejaculatory muscles whilst rhythmic and rapid contractions of the bulbospongiosus muscles accompanied sometimes by penis movement and expulsion of the urethral contents were recorded after dopamine application. The sequential treatment of animals with B. engleriana extracts (2.5-75.0 mg/kg) followed by dopamine (0.1 μmol/L/kg) resulted in a dose-dependent abolishment of the pro-ejaculatory response due to dopamine. However, in animals orally submitted to a daily gavage with B. engleriana extracts (60 mg/kg) for 1 or 4 weeks, the ejaculation stimulating effect of dopamine (0.1 μmol/L/kg) was significantly delayed (P<0.01) but not completely suppressed. Conclusions: Present findings suggest the involvement of dopaminergic system in the activity of B. engleriana and further support its aphrodisiac potentials due to sterols and saponins revealed in this plant.
ABSTRACT
<p><b>OBJECTIVE</b>To evaluate Ficus asperifolia (Moraceae) (F. asperifolia) effecting on regular estrus cycle of Wistar rats.</p><p><b>METHODS</b>Air-dried fruits of F. asperifolia were extracted using water. Prior to the test, vaginal smear was monitored daily for a 3-week period to select females with normal (regular) estrous cycle. Those with regular estrus cycle weighing between 150-170 g were randomized into three sets of 15 animals each. Each set was then divided into three groups: Group 1 (control) was orally administered with distilled water (10 mL/kg body weight) once a day for 1 week starting from the proestrus stage. Groups 2 and 3 were respectively treated with 100 and 500 mg/kg body weight of the plant aqueous extract. The two other sets of 15 animals each were similarly treated as the first set for 3 weeks and 6 weeks respectively. Estrus cycle pattern was monitored before and during plant extract application whereas lipid profile, ovary, uterus and liver growth indices were determined at the end of each treatment.</p><p><b>RESULTS</b>F. asperifolia did not disrupt (0%) the order of appearance of normal estrus cycle stages, namely, proestrus, estrus, metestrus and diestrus. Short-term treatment (1 week duration) exhibited high frequency of appearance of proestrus and estrus stages while mid- (3 weeks) and long-term (6 weeks) treatments revealed constancy in the frequency of all stages irrespective to animal groups. The plasma and organ lipid profile, as well as ovary, uterus and liver growth remained unchanged when compared to distilled water-treated animals. Following long-term administration of plant extract (6 weeks), no adverse effect was noticed.</p><p><b>CONCLUSIONS</b>Our data partially support the use of F. asperifolia in common medicine.</p>