Methods MMP 2, 9mRNAs expressions during estrous cycle in the rat ovary were assessed by in situ hybridization,and the results were determined by semi quantitative analysis through densitive scanning method.
Methods The content of ET plasma E_2 and P in the ovarian was determined with radio immunoassay(RIA)and the orarian content of No was determined with Spectrophotometer in mice of different stages of estrous cycle treated by lipopolysaccharide(LPS).
The beginning days of oestrous cycle recovery in β-ME0,β-ME100 groups were(25.20±4.49,23.5±5.79) longer than those of in control group (12.75±1.5),P<0.05.(2)The histological observation of xenografts found follicles in different periods in the survival grafts.
Results (1) The recovery ratio of oestrus cycle in β-ME0、β-ME100 group had a higher level(62.5%,87.5%) than that of in freshly transplanted group(33.3%),P<0.05,when compared with β-ME100 group(87.5%).
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.
Results are tentatively explained, suggesting that the variability of the female response to stress during the different phases of the estrus cycle, permitted them to perform differently after chronic cannabis treatment.
In conclusion, we show expression of ChAT in oviductal epithelial cells at different stages of the oestrus cycle and pregnancy, indicating that these cells can synthesize ACh in a cycle-dependent manner.
In adult female rats the mitotic index of prolactin cells was higher at oestrus than at other stages of the oestrus cycle and than that in male rats of comparable ages.
The irregular and prolonged oestrus cycle of 13 ± 10 days in 20 adult female rats was reduced to 6 ± 3 days after an 1-hr daily treatment with small negative ions for a period of 25 days.
The variables pro- and met-oestrus, oestrus duration, ovulation time and oestrus cycle length are analysed, as well as the influence of season, age and group on these variables.
The effect of chronic starvation on pituitary-gonadal axis was observedby a new procedure of intermittent starvation, i. e. alternative starvationand refeedings. During intermittent starvation the estrous cycle was depressedalmost completely and extirpation of one ovary could not induce hypertrophyof the other. Thus enhanced negative and decreased positive feedback actionsof sex steroids upon gonadotrophin secre tion were indicated duringintermittent starvation.
Histochemical changes of the superficial epithelium and the glandular epithelium during estrus cycle and early pregnancy in rats were investigated. The results indicated that during diestrus the activity of ACP, G6Pase, NSE was declined and the amounts of glycogen and lipid were quite low as well. During estrus the activity of NSE, ACP and SDH was increased, which suggested that the metabolism of carbohydrate and lipid became very active. At the 6th day of rat pregnancy the amounts of glycogen and lipid and...
The state of hypothalamic-pituitary system in middle-aged (15-17 mouths) andconstant estrus (CE) cycle of yonng (3-5 months) rats were compared. The hypotha-lamic 5-HT, DA concentrations and serum LH level in CE rats were measured andcompared. The data indicated that a decrease in DA concentration, an increase in5-HT concentration and 5-HT/DA ratio occurred in hypothalamus of CE rats, withthe level of serum LH also rised. These changes were responsiple for the disorderof estrus cycle and aging of reproducti...
动情周期
estrous cycle
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