Endocrinology / / April 21, 2016
anovulatory cycle is characterized by regular uterine krovootdeleniyami the same length and strength, as well as during normal menstruation, but unlike the latter is absent ovulation and corpus luteum formation.Anovulatory cycles in women was first established in 1926, Schroder
anovulatory cycles are more common in women in the first years after the onset of menstruation.In the reproductive period, the frequency of anovulatory cycles is reduced.They show women suffering from infertility.However, anovulatory cycles may b
In anovulatory follicle cycle, reaching a stage of maturity graafova bubble, not ovulating, and undergoes atresia, and education does not occur the corpus luteum.
anovulatory cycles may be the result of ovarian regulation by the hypothalamic-pituitary system.At the same time as a result of primary disorders of hypothalamic centers does not occur cyclical selection factors stimulating release of gonadotropins, especially LH.Urinary gonadotropins throughout the anovulatory cycle is monotonically.
anovulatory cycles may also be due to reduction of ovarian reactivity to gonadotrophic stimulation.In such cases, the selection of gonadotropin stores cyclical, with the rise in mid-cycle;Although ovarian follicles and there is some development, but ovulation does not occur.Very often such anovulatory cycles occur during menopause.In the middle of the cycle, there is a distinct rise in LH release, but ovulation does not occur.
- ovarian hormones.Estrogens
- Anatomy ovarian
- Myasthenia gravis.MYASTHENIA GRAVIS
- syndrome Treatment of Cushing's
- ovarian hormones.Androgens
- Biological effects of catecholamines
- diagnosis and treatment of pheochromocytomas
- Diseases of the adrenal medulla
- Treatment of chronic adrenal insufficiency
- Diseases of the thymus (thymus) gland
- relationship thymus gland with endocrine glands
- thymus gland and its physiology
- sTATUS THYMICO-LYMPHATICUS (lymphoidotoxemia)
Isolation of estrogen during anovulatory cycles are usually reduced in comparison with the norm.But because of different genesis anovulatory cycles, estrogen character selection may be different.Their excretion can be monotonous at a relatively high level.Spotting at the appropriate time of menstruation, occur at the same time due to the mechanism of intermittent bleeding in the intact hormone levels ( «break though» phenomenon).But in addition to this type of urinary estrogens, are anovulatory cycles with fluctuating level of their allocation;while there is a rather long persisting maximum release estrogen at mid-cycle (as opposed to the normal cycle when the ovulatory peak lasts only 1 to 2 days) before menstruation and their separation decreases, which reflects the development of the follicle atresia and then it without breaking.Isolation in all cases pregnanediol anovulatory cycles is low (not higher than 2.1 mg), which indicates the absence of progesterone production by the corpus luteum.Accordingly, the endometrium is in the process of proliferation without secretory transformation.Endometrial proliferation may be small (normal type early proliferative phase of the menstrual cycle), and can be pronounced, sometimes signs of glandular hyperplasia.
clinical examination of patients with anovulatory cycles, shows the lack of secretory changes in the endometrium, monophasic rectal temperature and lack of lutein transformation of the vaginal epithelium.