Analysis of the impact of uterine fibroids of different locations and sizes on the perfusion and metabolic characteristics of the endometrium

Abstract

BACKGROUND: Uterine fibroids are the most common benign tumor of the female reproductive system. A number of factors affect endometrial receptivity in patients with uterine fibroids such as transcription factors HOXA10 and HOXA11, cytokines (growth factors and inflammatory markers), etc. The negative effect of myomatous nodes, which deform the uterine cavity, on endometrial receptivity has been well studied and is beyond doubt, while the influence of intramural and intramural-subserosal fibroids on the endometrium is debatable. An important point is to define clear criteria that justify myomectomy in patients without clinical symptoms of the disease who are planning pregnancy, in particular, with the help of assisted reproductive technology. This article presents the results of studies on the impact of uterine fibroids of different locations on the endometrium. The data were obtained from foreign literature sources and such electronic databases as PubMed, CyberLeninka, and Google Scholar in the period from 2000 to 2022. This survey also reflects the main aspects of federal clinical recommendations and demonstrates the results of our own research.

AIM: The aim of this study was to determine the effect of intramural and intramural-submucosal myomatous nodes nodes on the perfusion and metabolic characteristics of the endometrium.

MATERIALS AND METHODS: We conducted a comprehensive examination of 20 patients of reproductive age with uterine fibroids who underwent surgical treatment in Gynecological Department One with Operating Unit of the Research Institute of Obstetrics, Gynecology and Reproductology named after D.O. Ott (Saint Petersburg, Russia) and the Gynecological Department of N.A. Semashko City Hospital No. 38 (Saint Petersburg, Russia). Two groups were formed: group I consisted of 10 patients with multiple uterine fibroids (FIGO types 2 and 3); group II included 10 patients with intramural and intramural-subserosal myomatous nodes (FIGO types 4 to 6). Studies of endometrial perfusion and metabolism were carried out using a fiber optic system that implements fluorescence spectroscopy and laser Doppler flowmetry, including the LAKK-M diagnostic complex (Lazma Ltd., Russia) and a laparoscopic fiber optic probe, followed by registration of optical signals.

RESULTS: In the group of patients with uterine fibroids that deform the uterine cavity, we revealed a statistically significant decrease in the microcirculation index in endometrial tissues and an increase in fluorescence signals at a wavelength of 365 nm. This may indicate hypoxic phenomena in endometrial tissues of patients with FIGO types 2 and 3 fibroids. These findings are some of the significant pathogenetic causes of implantation disorders and abnormalities in the physiological course of pregnancy in patients of this study group.

CONCLUSIONS: The data obtained substantiate the need to continue research in this direction in order to develop perfusion-metabolic criteria that allow for optimizing the choice of treatment strategies in patients with uterine fibroids.

Keywords

endometrium / uterine fibroids / laser Doppler flowmetry / fluorescence spectroscopy

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