Immunohistochemical study of trophoblast cells using abortion material in the gestation period 9-12 weeks of pregnancy in women against the background of inflammatory diseases of the female genital organs

Abstract

Abstract. This article is devoted to the results of studies of trophoblast during the gestation of 9-12 weeks. This study is a fragment of a series of immunohistochemical studies of trophoblast with TORCH infection, which are scheduled to be carried out at different gestational dates. Purpose of the study – in various types of trophoblast using the immunohistochemical method to establish the features of the expression of metalloproteinase-2 using abortion material in gestation period 9-12 weeks of pregnancy with TORCH infection compared with observations without an infectious process. Material and methods. The main group of the study consisted of 24 observations of TORCH infection, and the control group - 22 observations of an aborted pregnancy without signs of an infectious process (abortion for social reasons). The study examined abortion material 9-12 weeks of gestation. The method of microdensitometry in a specialized computer program ImageJ evaluated the optical density of the color, and an immunohistochemical procedure was performed on metalloproteinase-2 with primary antibodies and a polymer antigen imaging system using DAKO diaminobenzidine. Results. According to the results of immunohistochemical studies using computer microdensitometry at a gestational age of 9-12 weeks, the very expression of metalloproteinase-2 is observed in the invasive trophoblast, the smallest - in the syncytotrophoblast of the choric villi, both with TORCH infection and without an infectious process, and intermediate values are noted in chorionic villus cytotrophoblast and cell column cytotrophoblast. Infection, the expression of metalloproteinase-2 is reduced in all four types of trophoblast (cytotrophoblast of chorionic villi; cytotrophoblast of cell columns; invasive cytotrophoblast in endometrial fragments), with TORCH except for syncytotrophoblast of chorionic villi. Conclusions. According to the results of immunohistochemical studies using computer microdensitometry at a gestational age of 9-12 weeks, both with TORCH infection and without an infectious process, the largest expression of metalloproteinase-2 is observed in invasive trophoblast, the smallest - in the syncytiotrophoblast of chorionic villi, and intermediate indices are noted in the cytotrophoblast of chorionic villi and the cytotrophoblast of cell columns. The expression of metalloproteinase-2 decreases in all types of trophoblast with TORCH infection, excluding the syncytiotrophoblast of chorionic villi.