Sentence examples for feedback of estrogens from inspiring English sources

It interferes with the inhibitory feedback of estrogens on the pituitary gland.

In premenopausal women, the use of aromatase inhibitors leads to an increase in gonadotropin secretion, because of the reduced feedback of estrogens to the hypothalamus and pituitary, and a subsequent stimulation of ovarian activity.

Kisspeptin in the infundibular nucleus mediates negative feedback of estrogen in humans (Fig.  1).

During most of the estrus cycle the secretion of LH and follicle-stimulating hormone (FSH) is maintained at a relatively low level by the negative feedback of estrogen and progesterone on the hypothalamic-pituitary-ovarian system (Fink 1988).

The fact that dioxin-like activity was not related to LH does not definitely exclude the possibility of an interaction at the pituitary level that is generally more difficult to assess because of the high intraindividual variation of LH secretion, which is under feedback control of estrogens and androgens.

Progestogen negative feedback and the lack of estrogen positive feedback on LH release prevent a mid-cycle LH surge.

In other words, there is an age-related loss of sensitivity by the hypothalamus to the negative feedback of certain hormones, such as estrogens and glucocorticoids [ 6- 13].

Here, we suggest that the reduced estrogen metabolization by the negative feedback of high COMT activity may result in increased levels of estrogen, which in turn may lead to enhanced expression of CCND1.

Fig. 2 Formation of estrogens, catechol estrogen metabolic pathway and DNA adducts of estrogens.

Safety of Estrogens in Lupus Erythematosus National Assessment-Systemic Lupus Erythematosus Disease Activity INational Assessment-Systemic

Disruption of homeostasis in the metabolism of estrogens, with excessive production of estrogen quinones and depurinating estrogen-DNA adducts, can lead to the initiation of cancer.