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Ovarian function immediately after the menarche.

A Borsos, L G Lampé, A Balogh

International Journal of Gynaecology and Obstetrics: the Official Organ of the International Federation of Gynaecology and Obstetrics

|June 1, 1986

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Ovarian activity following menarche is unpredictable. Early urine tests in teenage girls show variable estrone and pregnanediol-glucuronide levels, indicating inconsistent sexual steroid hormone production post-menarche.

Area of Science:

Reproductive Endocrinology
Pediatric Endocrinology
Gynecology

Background:

Menarche marks the onset of reproductive capability in females.
Hormonal profiles and ovarian function immediately post-menarche are not well-characterized.
Understanding early reproductive hormonal dynamics is crucial for assessing pubertal development.

Purpose of the Study:

To investigate ovarian activity in the early perimenarcheal period.
To determine levels of estrone and pregnanediol-glucuronide in young girls after menarche.
To assess the variability of sexual steroid hormone production in the initial phase of reproductive life.

Main Methods:

Radioimmunological determination of urinary estrone and pregnanediol-glucuronide.
Collection of early morning urine samples from teenage girls post-menarche.

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Analysis of data from 9 girls who completed sample collection within 100 days of menarche.

Main Results:

Insignificant hormonal changes were observed in 3 cases.
Normal estrone with ovulation-suggestive pregnanediol levels were found in 3 cases.
Ovulation without follicular release was suggested in 2 cases, highlighting unpredictable ovarian activity.

Conclusions:

Ovarian activity immediately following menarche is highly unpredictable.
A wide spectrum of sexual steroid hormone production, from very low to adult levels, can be observed.
Early reproductive hormonal profiles demonstrate significant individual variability.