One of the leading causes of implantation disorders in patients with endometrial and ovarian infertility factors is impaired maturation of pinopodes, delayed secretory transformation of the endometrium and displacement of the implantation window, as well as decreased expression of ER and increased expression of PR in glandular compartments in patients of the studied groups compared to the morphological control group, decreased expression of ER in the stromal compartment, in patients of groups 1 and 3.
Masalimova et al. (Tue,) studied this question.