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A rapid method for ovulation detection.

A Carranco-López1, R Reyes, L Huacuja

  • 1División de Biología del Desarrollo, IMSS, Guadalajara, Jalisco, México.

Archivos De Investigacion Medica
|October 1, 1990
PubMed
Summary
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Urine uronic acid (UA) levels fluctuate predictably during the menstrual cycle, showing a distinct peak near ovulation. This pattern offers a reliable, non-invasive method for detecting ovulation.

Area of Science:

  • Biochemistry
  • Reproductive Endocrinology
  • Gynecology

Background:

  • Uronic acid (UA) is a component of glycosaminoglycans.
  • Monitoring the menstrual cycle is crucial for fertility and reproductive health.
  • Accurate ovulation detection methods are essential for family planning and medical treatment.

Purpose of the Study:

  • To investigate the correlation between urinary uronic acid (UA) excretion and the menstrual cycle.
  • To determine if UA levels can serve as a reliable indicator for ovulation detection.
  • To compare UA excretion patterns in normal, hormonally induced, and anovulatory cycles.

Main Methods:

  • Collected urine samples over 24 normal menstrual cycles.
  • Validated ovulation timing using ultrasonography and basal body temperature.

Related Experiment Videos

  • Analyzed UA concentrations in urine during different phases of spontaneous and induced cycles.
  • Compared UA levels in normal cycles versus hormonally induced and anovulatory cycles.

    • Main Results:

    • A distinct midcycle peak in urinary UA concentration (1043 ± 68 µg/ml) was observed during normal cycles, correlating with ovulation.
    • Hormonally induced cycles showed reduced UA levels during the follicular phase (20%) and midcycle peak (11%), with a secondary peak post-ovulation.
    • Anovulatory cycles exhibited significantly diminished UA concentrations (50-60%) throughout, lacking the characteristic midcycle peak.

    Conclusions:

    • Urinary uronic acid (UA) excretion patterns accurately reflect the physiological changes of the menstrual cycle.
    • UA measurement in urine presents a promising, reliable, and non-invasive method for accurate ovulation detection.
    • This technique can differentiate between normal, hormonally influenced, and anovulatory cycles based on UA excretion profiles.