To further study the effects of exercise on GnRH and β-EP in rats’ hypothalamus and the mechanism of athletic se- condary amenorrhea, a SD rat modal of immunocytochemistry and image analysis system was established. Different effects of different estrous cycle and intensity exercise on hypothalamus can be obtained.
AIM:To observe the influence of large amounts of exercise on the estrous cycle of female mice, so as to provide evidence for the mechanism of menoxienia in female athletes caused by exercise training.
Results (1) The desquamated middle or bottom-level cells of vagina increased week by week and reached the highest at the seventh week in rats of Ta group.
METHODS: The experiment was conducted at the Experimental Animal Center of Shandong Physical Education Institute from March to October 2004. Forty healthy female SD rats of 2-month old were divided randomly into control group(n=20)and high intensity training group(n=20).
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.
To further study the effects of exercise on GnRH and β-EP in rats’ hypothalamus and the mechanism of athletic se- condary amenorrhea, a SD rat modal of immunocytochemistry and image analysis system was established.Different effects of different estrous cycle and intensity exercise on hypothalamus can be obtained. The result indicated that : intensive swimming exercise can reduce the positive substance of β-EP nervous cell in hypothalamus. With the other effects, the secretion of GnRH is increased. Pr...
Through 7 weeks endurance training with incremental intensity on treadmill, a SD rat model of Athletic Secondary Amenorrhea (ASA) has been founded successfully. Body weight(Bw), hematoglobin(Hb), ratios of pituitary gland weight to body weight(Rpb) and heart weight to body weight(Rhb), the change of vag amotic cells(Vac) indicated that: (1)The estrous cycle of SD rats can be inhibited by increasing load endurance training. Furthermore, the change of these indexes was similar to that of athlete. Therefore...
Objective: To show the mechanism of the ultrastructural change of Hypothalamus-Pituitary axis in women with athletic menstrual cycle irregularities (AMI). Methods: At first establish a rat model similar to athletic menstrual irregularities by incremental training, then observe the ultrastructural change of arcuate nucleus neuron in hypothalamus and gonadotroph in pituitary. Results: In training group A, the axon of arcuate nucleus neuron is separated from its myelin sheath, swelling in dendrite and vacuolat...