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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)

Effects of 180 micrograms and 250 micrograms norgestimate on pituitary-ovarian function and cervical mucus.

A double-blind cross-over study of 16 healthy women was carried out to evaluate the effects of norgestimate, a new progestogen, on pituitary ovarian function and cervical mucus. Treatment from cycle day 7 to 16 with 180 micrograms and 250 micrograms norgestimate led to suppression of luteinizing hormone (LH) and follicle-stimulating hormone (FSH) levels, while progesterone ( P) remained suppressed in 28 of 32 cycles studied, indicating inhibition of ovulation. Lack of ovulation in 30 cycles was associated in all but 3 with functional follicles, 2 of which luteinized. With 250 micrograms norgestimate, estradiol (E2) concentrations reached levels similar to those achieved during control follicular phase, but significantly higher concentrations of E2 were achieved with 180 micrograms norgestimate. Cervical mucus score was significantly depressed in all but 5 cycles (3 norgestimate 180 micrograms and 2 norgestimate 250 micrograms cycles). In conclusion, both dosages of norgestimate show good suppression of the hypothalamic-pituitary axis and cervical mucus.[1]


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