Moderate and severe endometriosis is associated with alterations in the cell cycle of granulosa cells in patients undergoing in vitro fertilization and embryo transfer

M Toya, Toya M, Mayumi Toya, H Saito, Saito H, Hidekazu Saito, N Ohta, Nobuhiko Ohta, Ohta N, T. Saito, Saito T, Takakazu Saito, Tomoko Kaneko-Tarui, Kaneko T, T Kaneko, Hiroi M, M Hiroi, Masahiko Hiroi
Fertility and Sterility · 2000 · vol. 73(2) , pp. 344–350 · doi:10.1016/s0015-0282(99)00507-5 · PMID:10685541 · W2081108347
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⚙ AI-generated summary by claude@2026-06, 2026-06-08 ⓘ

This study investigated granulosa cell cycle alterations in patients undergoing IVF, finding associations between moderate and severe endometriosis and significant changes in these cells.

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Abstract

ObjectiveTo determine whether folliculogenesis is impaired in patients with endometriosis.DesignProspective study.SettingYamagata University School of Medicine, Yamagata, Japan.Patient(s)Thirty women participating in an IVF program.Intervention(s)The patients were divided into four groups according to the cause of their infertility: tubal factor (T), n = 7; male factor (M), n = 7; idiopathic (I), n = 7; and endometriosis (E), n = 9. Granulosa cells were obtained from the follicular fluid of each patient and analyzed by flow cytometry.Main outcome measure(s)The percentage of granulosa cells in each cell-cycle stage.Result(s)The mean (+/- SD) rate of apoptosis in the granulosa cells obtained from the patients with endometriosis was the highest among the four groups (T = 11.7% +/- 3.3%; M = 5.6% +/- 3.8%; I = 9.6% +/- 5.1%; and E = 18.6% +/- 9.6%). The percentage of S-phase granulosa cells was significantly higher in the patients with endometriosis than in all the other patients combined (E = 12.5% +/- 6%; T + M + I = 9.3% +/- 2.9%). The percentage of G2/M-phase granulosa cells was significantly lower in the endometriosis group than in the other three groups combined (E = 2.3% +/- 2.5%; T + M + I = 4.6% +/- 2.1%).Conclusion(s)Endometriosis impairs the cell cycle in granulosa cells. This phenomenon may have a detrimental effect on folliculogenesis.

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Condition tags

endometriosis

MeSH descriptors

Cell Cycle Cell Cycle Endometriosis Fertilization in Vitro Granulosa Cells Infertility, Female Adult Chorionic Gonadotropin Chorionic Gonadotropin DNA DNA Endometriosis Endometriosis Female Flow Cytometry Granulosa Cells Humans Infertility, Female Infertility, Female Infertility, Male

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