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Menstrual cycle characteristics and steroid hormone, prolactin, and growth factor levels in premenopausal women.


ABSTRACT: Menstrual cycle characteristics are markers of endocrine milieu. However, associations between age at menarche and adulthood sex steroid hormone levels have been inconsistent, and data on menstrual characteristics and non-sex steroid hormones are sparse.We assessed the relations of menstrual characteristics with premenopausal plasma sex steroid hormones, sex hormone binding globulin (SHBG), prolactin, and growth factors among 2,745 premenopausal women (age 32-52) from the Nurses' Health Study II. Geometric means and tests for trend were calculated using multivariable general linear models.Early age at menarche was associated with higher premenopausal early-follicular free estradiol (percent difference ?13 years?=?11%), early-follicular estrone (7%), luteal estrone (7%), and free testosterone (8%) (all p trend??39 days?=?18%) and free estradiol (16%), early-follicular estrone (9%), SHBG (7%), lower luteal free estradiol (-?14%), total (-?6%), and free testosterone (-?15%) (all p trend??31 days?=?14%), SHBG (10%), lower luteal estrone (-?8%), progesterone (-?9%), total (-?11%) and free testosterone (-?25%), and androstenedione (-?14%) (all p trend?

SUBMITTER: Farland LV 

PROVIDER: S-EPMC5718047 | biostudies-literature | 2017 Dec

REPOSITORIES: biostudies-literature

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Menstrual cycle characteristics and steroid hormone, prolactin, and growth factor levels in premenopausal women.

Farland Leslie V LV   Mu Fan F   Eliassen A Heather AH   Hankinson Susan E SE   Tworoger Shelley S SS   Barbieri Robert L RL   Dowsett Mitch M   Pollak Michael N MN   Missmer Stacey A SA  

Cancer causes & control : CCC 20171031 12


<h4>Purpose</h4>Menstrual cycle characteristics are markers of endocrine milieu. However, associations between age at menarche and adulthood sex steroid hormone levels have been inconsistent, and data on menstrual characteristics and non-sex steroid hormones are sparse.<h4>Methods</h4>We assessed the relations of menstrual characteristics with premenopausal plasma sex steroid hormones, sex hormone binding globulin (SHBG), prolactin, and growth factors among 2,745 premenopausal women (age 32-52)  ...[more]

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