Endometrial Receptivity in Embryo Implantation
Summary
Endometrial receptivity denotes the state of the uterine lining that permits a blastocyst to attach and invade, initiating pregnancy. This specialised phase, often termed the “implantation window”, is orchestrated by cyclic changes in oestrogen and progesterone, which drive decidualisation of stromal cells, modulate immune tolerance and promote vascular remodelling. Key morphological features include the emergence of pinopodes—membrane projections on the luminal epithelium—and the regulated expression of adhesion molecules such as integrins and cytokines like leukaemia inhibitory factor (LIF). Dysregulation of these processes underlies recurrent implantation failure and limits the success of assisted reproductive technologies worldwide. Contemporary research integrates molecular profiling, imaging of endometrial microstructure and biomarker discovery to refine diagnostic assays and develop targeted therapies that enhance uterine preparedness for implantation.
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Endometrial Receptivity in Embryo Implantation publication trend
The graph below shows the total number of articles in endometrial receptivity in embryo implantation across all publications each year (not limited to Nature Index journals).
Technical terms
Endometrium: The inner mucosal lining of the uterus that undergoes cyclical remodelling to support embryo attachment and growth.
Implantation window: A limited period in the mid-luteal phase when the endometrium attains optimal receptivity for blastocyst invasion.
Pinopodes: Apical epithelial protrusions thought to facilitate intimate contact between embryo and endometrium during receptivity.
Decidualisation: Progesterone-driven transformation of stromal cells into specialised decidual cells that support early pregnancy.
Integrins: Cell-adhesion molecules on the endometrial surface that mediate embryo attachment through extracellular matrix interactions.
Leukaemia inhibitory factor (LIF): A cytokine essential for endometrial receptivity and embryo-uterine communication.
Ferroptosis: An iron-dependent form of regulated cell death implicated in endometrial pathology and recurrent implantation failure.
References
- Effect of acupuncture on the opening time of implantation window and endometrial receptivity in controlled ovarian hyperstimulation rats during peri-implantation period. Frontiers in Endocrinology (2023).
- Mechanisms of Bushen Tiaoxue Granules against controlled ovarian hyperstimulation-induced abnormal morphology of endometrium based on network pharmacology. Journal of Ovarian Research (2024).
- FANCD2 as a ferroptosis‐related target for recurrent implantation failure by integrated bioinformatics and Mendelian randomization analysis. Journal of Cellular and Molecular Medicine (2024).
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