Sirtuin expression in the gravidar endometrium during an undeveloped pregnancy
- Authors: Tral T.G.1, Tolibova G.K.1
-
Affiliations:
- The Research Institute of Obstetrics, Gynecology and Reproductology named after D.O. Ott
- Issue: Vol 74, No 5 (2025)
- Pages: 85-92
- Section: Original study articles
- URL: https://ogarev-online.ru/jowd/article/view/363334
- DOI: https://doi.org/10.17816/JOWD692444
- EDN: https://elibrary.ru/GGSPWA
- ID: 363334
Cite item
Abstract
BACKGROUND: Endometrial dysfunction is a leading factor in the disruption of morphofunctional characteristics of the endometrium and one of the main determinants of reproductive loss. Today, special attention is being paid to the molecular and biological integrity of structures, primarily the endometrial stroma, in order to understand the complex molecular processes initiated during implantation. There is still very little information in the literature on the role of sirtuin in endometrial pathology.
AIM: The aim of this study was to evaluate the expression of sirtuin in the compact layer of the gravid endometrium in early term miscarriage after in vitro fertilization (IVF) depending on endometrial transformation being completed in patients with chronic endometritis.
METHODS: This cross-sectional single-center study of samples of aborted material after IVF was conducted in patients with chronic endometritis and progressive pregnancy terminated at the woman’s request. Histological examination was performed using a standard procedure with dehydration of the biological specimens in alcohols and staining with hematoxylin and eosin. The immunohistochemical study was performed using a one-step protocol with antigen unmasking. Polyclonal antibodies to SIRT1 (ab DF6033, Affinity Biosciences, China) were diluted 1:200 to evaluate sirtuin expression.
RESULTS: Two groups of samples were formed after IVF: Group I with complete gravid transformation in case of undeveloped pregnancy (n = 20) and Group II with incomplete gravid transformation (n = 20). The control group consisted of 15 samples of aborted material from progressive pregnancies terminated at the woman’s request. In the aborted material after IVF, complete gravid transformation of the endometrial stroma did not differ histologically from that of the decidual tissue in the control group. With incomplete gravid transformation, the compact layer of the gravid endometrium is represented by immature deciduocytes. We verified a decrease in sirtuin expression in the gravid endometrium after IVF compared to the control group. With incomplete gravid transformation, a decrease in sirtuin expression was also verified compared to the control group and Group I.
CONCLUSION: Termination of pregnancy in patients with infertility may be caused by not only structural disorders of the decidual tissue, but also changes in the expression of biological molecules in endometrial fibroblasts in the presence of chronic endometritis and endometrial dysfunction.
About the authors
Tatiana G. Tral
The Research Institute of Obstetrics, Gynecology and Reproductology named after D.O. Ott
Author for correspondence.
Email: ttg.tral@yandex.ru
ORCID iD: 0000-0001-8948-4811
SPIN-code: 1244-9631
MD, Dr. Sci. (Medicine)
Russian Federation, Saint PetersburgGulrukhsor Kh. Tolibova
The Research Institute of Obstetrics, Gynecology and Reproductology named after D.O. Ott
Email: gulyatolibova@mail.ru
ORCID iD: 0000-0002-6216-6220
SPIN-code: 7544-4825
MD, Dr. Sci. (Medicine)
Russian Federation, Saint PetersburgReferences
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