ABSTRACT
Infertility affects 10 to 15% of the general population, and although advances in
assisted reproductive therapies have had a major input, pregnancy rates continue to
be relatively low. This has lead to an increasing interest in understanding the interaction
between the embryo and the endometrium during the window of implantation. Multiple
experimental approaches have been used to evaluate the morphological, cellular, and
molecular changes in the endometrium during the normal menstrual cycle and as a consequence
of numerous benign gynecological diseases that contribute to infertility. Successful
implantation requires interplay between the embryo and the endometrium during a very
narrow window of time within the menstrual cycle. Given that there are limitations
to evaluating this intricate dialog in the human, nonhuman primates serve as a valuable
model by which to obtain insights into this critical period of uterine receptivity.
Articles in this issue provide a comprehensive summary of approaches to understand
the complex biology that is required for successful implantation, and the potential
adverse consequences of ovarian hyperstimulation and benign gynecological diseases
on uterine receptivity and embryo implantation.
KEYWORDS
Uterine receptivity - embryo - implantation - endometrial pathologies - infertility