Abstract
Objective: One of the most common endocrinological disorders in women of reproductive age is thyroid diseases. It is known that serum Anti-Mullerian hormone level is a good indicator in determining the ovarian reserve. In this study, we investigated the effect of serum thyroid-stimulating hormone level on Anti-Mullerian hormone.
Material and Methods: The data of 198 patients aged between 20-45 years, who were consulted to the endocrinology clinic for fertility evaluation, were recorded and analyzed retrospectively. All patients were divided into 3 categories according to their thyroid-stimulating hormone level results; 1) ≤2.5 mIU/L, 2) 2.51-4.99 mIU/L, 3) ≥5 mIU/L. Serum Anti-Mullerian hormone, laboratory results and demographic characteristics were compared between all of the groups. In addition, the correlation between Anti-Mullerian hormone and thyroid-stimulating hormone was analyzed.
Results: The mean age of the patients was 29.4 (±6.4). Variables such as age (p=0.384), BMI (p=0.407), FSH (p=0.178), LH (p=0.407), estradiol (p=0.424), and Anti-Mullerian hormone (p=0.814) were not different between the groups. There was no correlation between Anti-Mullerian hormone level and serum thyroid-stimulating hormone level or body mass index results. While a statistically significant positive correlation was found between Anti-Mullerian hormone and luteinizing hormone (r=0.258, p=0.001), a negative correlation was found between Anti-Mullerian hormone and follicle stimulating hormone (r=-0.207, p=0.007) and estradiol (r=-0.198, p=0.010).
Conclusion: In conclusion, while mild thyroid-stimulating hormone changes do not appear to be effective on Anti-Mullerian hormone used in the assessment of ovarian reserve, more comprehensive studies are needed to show that ovarian reserve changes positively with thyroid hormone replacement therapy.