Correlation of reproductive aging with function in selected organ systems

Area of Science:

• Reproductive endocrinology
• Gerontology
• Internal medicine

Background:

• Reproductive aging is characterized by declining ovarian reserve and hormonal changes.
• Follicle-stimulating hormone (FSH) is a key marker of ovarian aging.
• The relationship between reproductive aging and aging in other organ systems is not fully understood.

Purpose of the Study:

• To compare day 3 FSH levels with biomarkers of aging in other organ systems.
• To investigate potential parallels in the aging process between the hypothalamic-pituitary-ovarian axis and other organ systems in healthy, older reproductive-age women.

Main Methods:

• Cross-sectional pilot study involving healthy, regularly cycling women aged 40 to 45 years.
• Participants were divided into two groups based on normal or elevated day 3 FSH levels.
• Evaluated biomarkers included blood pressure, pulmonary function, bone density, skin thickness, and various blood/urine analytes.

Main Results:

• Women with elevated FSH levels exhibited trends toward lower hematocrit and creatinine clearance (CrCl).
• Creatinine clearance (CrCl) showed a significant negative correlation with FSH levels.
• After Bonferroni correction for multiple comparisons, these differences did not reach statistical significance (P < or = 0.05).

Conclusions:

• Aging of the hypothalamic-pituitary-ovarian axis may parallel aging in other organ systems.
• These findings suggest potential links between reproductive aging and systemic aging.
• Longitudinal studies are necessary to determine if these measures can predict reproductive reserve before irreversible dysfunction.