How does estrogen prevent LH surge in contraceptives? While
Now open: Certificate Course in Management of Covid-19 by Govt. Of Gujarat and PlexusMDKnow more...Now open: Certificate Course in Management of Covid-19 by Govt. Of Gujarat and PlexusMDKnow more...
Anubhav Goel
How does estrogen prevent LH surge in contraceptives? While in normal mid-cycle it causes LH surge to release mature ovum?
S●●●●●●i P●●l and 3 others like this
Like
Comment
Share
J●●●n P●●●●●●●i
J●●●n P●●●●●●●i General Medicine
It has long been known that administration of either estrogen or progesterone, if given in appropriate quantities during the first half of monthly cycle, can inhibit ovulation. The reason for this is that appropriate administration of either of these hormones can prevent the preovulatory surge of LH secretion by the pituitary gland, which is essential in causing ovulation. It is not clearly understood why administration of estrogen or progesterone prevents the preovulatory surge of LH secretion. However, experimental work has suggested that immediately before the surge occurs, a sudden depression of estrogen secretion by ovarian follicles probably occurs, which might be necessary signal that causes the subsequent feedback effect on the anterior pituitary that leads to the LH surge. The administration of sex hormones (estrogens or progesterone) could prevent the initail ovarian hormonal depression that might be the initiating signal for ovulation.... Read more
Apr 21, 2017Like2
A●●●●●v G●●l
A●●●●●v G●●l General Medicine
Thank you so much.... Can you please provide source as well?
Apr 21, 2017Like1
J●●●n P●●●●●●●i
J●●●n P●●●●●●●i General Medicine
Always mention Anubhav, Please refer to Guyton And Hall Textbook of Medical Physiology
Apr 22, 2017Like1