The rate of oocytes with granular cytoplasm is higher in women with endometrioma in ICSI cycles

Bülent Emre Bilgiç, Bulent Emre Bilgic, Meryem Kürek Eken, Meryem Kurek Eken, Şule Ayla, Ayşe Kose, Ayşe Merve Köse, Tayfun Kutlu, Gülşah İlhan
Journal of obstetrics and gynaecology : the journal of the Institute of Obstetrics and Gynaecology · 2021 · vol. 42(3) , pp. 467–471 · doi:10.1080/01443615.2021.1916803 · PMID:34165007 · W3175064602
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⚙ AI-generated summary by claude@2026-06, 2026-06-09 ⓘ

Women with endometrioma undergoing ICSI showed a higher rate of oocytes with granular cytoplasm and fewer MII oocytes and embryos compared to those without.

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Abstract

The purpose of this study was to investigate the impact of endometrioma on oocyte morphology and fertility outcome in intracytoplasmic sperm injection (ICSI)cycles. The study material was obtained from 114 ICSI cycles of infertile women aged between 20 and 38 years with ovarian endometriomas and unexplained infertility. In total, 644 mature oocytes were included in the analysis. The rates of specific oocyte morphological abnormalities were similar between the two groups however the central granulation rate was significantly higher in the group with endometrioma (p < .05). Fertilisation rate were not significantly different between the groups (p ≥ .05) however the numbers of metaphase 2 (MII) oocytes and embryos were lower in the endometrioma group (p ≤ .05). Endometrioma was associated with a higher rate of oocytes with granular cytoplasm, despite the fertilisation rate the numbers of the MII oocytes and embryo were affected.IMPACT STATEMENTWhat is already known on this subject? The association between endometrioma and infertility is a well-known condition, but the possible mechanisms of the effects of endometrioma on women's fertility is still debated and controversial. There is limited data on the effect of endometrioma on oocyte morphology. Low oocyte quality and lower fertilisation rates might be the main cause of adverse pregnancy outcomes during in vitro fertilisation/intracytoplasmic sperm injection cycles.What do the results of this study add? Endometrioma was associated with a higher rate of oocytes with granular cytoplasm, and lower metaphase 2 oocytes and embryos.What are the implications of these findings for clinical practice and/or further research? Future studies using further oocyte quality assessment methods and prospective observational studies including live-birth rate should be designed to better understand how endometrioma affects fertility outcomes.

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Condition tags

mesh:D004715endometriomainfertility

MeSH descriptors

Endometriosis Endometriosis Infertility, Female Infertility, Female Infertility, Female Cytoplasm Female Fertilization in Vitro Fertilization in Vitro Humans Oocytes Pregnancy Pregnancy Rate Retrospective Studies Sperm Injections, Intracytoplasmic Sperm Injections, Intracytoplasmic

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