This study aimed to investigate the relationship between follicular fluid Bisphenol A (BPA) concentrations with alterations of ICAM-1 and HLA-G genes and proteins expression as well as methylation profiles in the cumulus cells of poor ovarian response (POR) women based on their healthy lifestyle habit. Eighty women under the age of 35 were divided into two groups: 1—POR without using plastic containers (n = 40) and 2—POR with using plastic containers (n = 40). The ICAM-1 and HLA-G genes and protein expressions were examined by the quantitative PCR and western blotting technique. The methylation pattern was investigated by the methylation-specific PCR. Total BPA in follicular fluid was measured with high-performance liquid chromatography technique and the detection limit was 1.14 ng/ml. ICAM-1 and HLA-G genes were differentially expressed between the two groups studied. ICAM-1, HLA-G genes, and protein expressions in group 1 were up-regulated compared to the second group (P < 0.05). While DNA methylation status in group 1 were decreased compared to the other group (P < 0.05). The concentration of BPA in the follicular fluid of group 1 was lower compared to the second group (P < 0.05). The oocyte quality and clinical pregnancy ratio showed significantly higher in group 1 than in the other ones (P < 0.05). The alteration of ICAM-1 and HLA-G gene expressions in POR women is probably related to BPA concentration. As a result Lifestyle habits may also affect the methylation pattern and protein levels in the cumulus cells of POR women. Additionally, lifestyle habits may be considered as a marker for ovulation, oocyte maturation, preimplantation, and clinical pregnancy process.
Purpose: Diagnosis of women with poor ovarian response (POR) to exogenous gonadotropin stimulation is a challenge for reproductive specialists. This study aimed to investigate the expression profile for ICAM-1 and HLA-G genes in the cumulus cells of infertile women with POR based on their healthy lifestyle. Methods: Eighty women under the age of 35 were enrolled and divided into two groups: 1- POR without a healthy lifestyle (n=40) and POR with a healthy lifestyle (n=40). The ICAM-1 and HLA-G genes expression was compared by the quantitative PCR between the groups. The ICAM-1 and HLA-G protein levels were analyzed by the western blotting technique, and the methylation pattern was investigated by the methylation-specific PCR.Results: The qRT-PCR assay showed that ICAM-1 and HLA-G genes were differentially expressed between the two groups studied. ICAM-1,HLA-G genes,and proteins expressions in POR with healthy lifestyle were upregulated compared to the second group (P<0.05). ICAM-1 and HLA-G DNA methylation status in the POR with a healthy lifestyle were decreased compared to the other group (P<0.05). The oocyte quality and clinical pregnancy ratio were significantly higher in the POR with a healthy lifestyle women than in the other ones (P<0.05). Conclusion: Theupregulation of ICAM-1 and HLA-G in POR women is probably related to lifestyle. Lifestyle may affect the methylation pattern, protein levels and alteration of gene expression profiles in the cumulus cells of POR women. Additionally, lifestyle may be considered a marker for ovulation, oocyte maturation, preimplantation and clinical pregnancy process.
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