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    Microarray analysis of cumulus cells in women with ovarian endometriosis undergoing intracytoplasmic sperm injection
    (Sage Publications Ltd, 2020) Karaer, Abdullah; Tuncay, Gorkem; Dogan, Berat; Tecellioglu, Nihan; Cigremis, Yilmaz
    Objective: The aim of this study was to find the significantly altered genes in cumulus cells of women with ovarian endometriosis by using microarray and quantitative polymerase chain reaction analysis. Methods: Thirty women with ovarian endometriosis and 30 age-body mass index matched controls (women with infertility as a result of pure male factor) were enrolled in this study. Cumulus cells from study participants who underwent controlled ovarian hyperstimulation were isolated mechanically. Microarray comparative genomic hybridization was used to compare the transcriptome of cumulus cells from women with ovarian endometriosis and controls. According to the different expression levels in the microarrays and their putative functions, KRAS, ZNF322, and SDHA were selected and analyzed by real-time quantitative polymerase chain reaction. Results: There was no significant difference in the basal conditions between patients with endometriosis and controls, such as age, body mass index, basal follicle stimulating hormone and estradiol levels, and total gonadotrophin dosage. The gene expression profile of cumulus cells from patients with endometriosis was significantly different from that of controls. A total of 295 genes were significantly up- or down-regulated (p-value < 0.05 and absolute fold change > 1.5). For all of the genes adjusted p-value was found to be 0.999. Polymerase chain reaction analysis showed that KRAS and ZNF322 mRNA levels in the cumulus cells of patients with ovarian endometriosis were significantly up-regulated compared to controls (fold changes: 3.05 and 3.22, respectively). Conclusion: KRAS and ZNF322 mRNA levels in the cumulus cells of patients with ovarian endometriosis were significantly up-regulated.