Ovulation: A cellular symphony in three movements.
Level 5 - mechanism / opinion, no new human data
Narrative review synthesizing mechanistic and animal model data without clinical human trials.
PubMed 40652787 · doi:10.1016/j.semcdb.2025.103634
What was done
This narrative review synthesises mechanistic evidence on mammalian ovulation, focusing on dynamic spatial and temporal coordination across four major follicular cell types. It integrates recent discoveries from ex vivo follicle culture and live imaging in mouse models into a multi-stage temporal framework triggered by FSH and LH surges.
What was found
The abstract reports no numerical data. Conceptually, it describes ovulation as a stepwise cascade mediated by FSH, LH, EGF, and progesterone. Live-imaging observations highlighted that the oocyte remains essentially stationary throughout most of the ovulatory process, moving toward the rupture site only minutes before release.
Why it matters
The review provides a structured temporal model of ovulation, shifting focus from the final event of follicle rupture to the preceding tissue-scale remodeling and cellular signaling cascades essential for releasing a fertilization-competent egg.
Limits
This is a narrative review without systematic search methods or quantitative synthesis. The summarized mechanistic and imaging insights are derived largely from ex vivo mouse follicle models, which may not completely reflect in vivo human ovarian physiology.
Cited by
- supports Luteinizing hormone surge triggers the release of the egg from the ovarian follicle during ovulation.