PMID: 2510614Jan 1, 1989Paper

Endocrine and ovarian parameters at various frequencies of ovulation in adolescents

Archives of Gynecology and Obstetrics
S VenturoliC Flamigni

Abstract

We assessed ovarian and endocrine function in 86 adolescents over a six month period. Postmenstrual estrone (E1) and estradiol-17 beta (E2) levels, premenstrual FSH levels and pre- and postmenstrual LH, testosterone (T) and androstenedione (A) levels decreased as the frequency of ovulation increased, while premenstrual E2, progesterone (P) and 17 alpha-hydroxyprogesterone levels increased. Both right and left ovarian volume and the per cent of multifollicular ovaries decreased with an increase in the frequency of ovulation. In the premenstrual phase P values correlated significantly with frequency of ovulation for FSH (r = -0.43: P less than 0.001), LH (r = -0.36: P less than 0.01), T (r = -0.31: P less than 0.05) and A (r = -0.26: P less than 0.05). Our data suggest that in the postmenarcheal period the progressive loss of immature endocrine and ovarian characteristics (high LH, FSH, and androgen levels and enlarged, multifollicular ovaries) is linked to an increasing number of ovulations. Progesterone plays a major role in the development of cyclic function characteristic of adult maturity.

References

Nov 1, 1978·The Journal of Clinical Endocrinology and Metabolism·D ApterR Vihko
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Citations

Jan 17, 2003·Journal of the National Cancer Institute·Joanne F DorganPhilip R Taylor
Sep 15, 2007·Cancer Epidemiology, Biomarkers & Prevention : a Publication of the American Association for Cancer Research, Cosponsored by the American Society of Preventive Oncology·Heather J BaerJoanne F Dorgan

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