in the female rats, although the estradiol and testosterone levels of the plasma and the E_2/T ratio changed with their estrous cycle, but the mean values of estradiol,testosterone and the E_2/T ratio were 55.4±3.7 pg/ml,51.8±3.1 ng/100 ml and 0.124±0.014 respectively.
Results: (1) It was showed that the estrous cycle of 60% rat was disturbanced when injecting morpine for 7 weeks,and that of 16.1% rat was depressed after 10 weeks.
After injection,the average days of oestrous cycle in animals of the experimental group changed from 5.3 to 11.2 d, whereas varied from 4.9 to 5.1 d in the control group.
Method: 24 normal Sprague Dawlay femal rats having regular sexed cycle (4-5 days) were used, and 14 of those were in treated group, which was divided into drug-given group and drug-stop group.
Method: Sixty healthful SD femal rats having regular sexed cycle (4-5days) were used, it included treated group (n=30) and control group (n=30),which was divided into short-term group (n=10), long-term group (n=10) and drug-stop group (n=10).
(2) The serum concentrations of FSH,LH, E2 and P have significantly decreased (P<0.05, P<0.05, P<0.01, P<0.05) when the function was disordered by injecting morpine.
To test if leptin responsiveness may be regulated we assayed hypothalamic response to leptin during the estrous cycle; when changes in food intake are known to occur.
To fill this gap in our knowledge, we identified and characterized the tissue specific expression of IGFBP-1 to-6 in rat oviducts over the estrous cycle byin situ hybridization and immunocytochemistry.
Total glycosides (TⅡ or TG) of Tripterygium wilfordii (TW) 30 mg/ kg/d was fed to male and female mice for 1~3 months, then the drug was stopped for 3 months and these mice were examined monthly. The results showed that the mean weight and morphologic changes of testis, activity and counts of spermatozoa of male mice were in accord with fertility changes. The results indicated that the drug had a definite and reversible anti-fertile action.Female mice displayed irregular estrual cycles, but the reproductive...
The estradiol (E_2) and testrosterone (T) levels in the Plasma of normal male and female rats and their E_2/T ratio were measured by radioimmunoassay. We have found that in the male rats the plasma testosterone level was 270.0±46.2 ng/100ml,the estradiol level was 62.I ±2.8 pg/ml and the E_2/T ratio wa(?) 0.040±0.008; in the female rats, although the estradiol and testosterone levels of the plasma and the E_2/T ratio changed with their estrous cycle, but the mean values of estradiol,testosterone and the E_2...
This paper reports the changes of estrous cycle when "741" contraceptive film was placed in rat's vagina for two years. Three indices (average days of each estrous cycle; relationship between estrous cycle and age of the rat; termination time of estrous cycle) were used in the comparison of different dose groups. They were "741" low dose group (L), "741" medium dose group (M), "741" high dose group (H), basic substance control group (PC) and the control group (C).The rats were kept under observation for two...