Measurement of oxidative stress in the follicular fluid of infertility patients with an endometrioma

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This study measured oxidative stress and antioxidant capacity in follicular fluid from infertility patients with and without endometriomas, finding no significant differences between the groups.

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This study compared oxidative stress and antioxidant capacity in follicular fluid from women with unilateral endometrioma (26 patients) versus without endometrioma (29 controls). Follicular fluid was collected at the first oocyte retrieval puncture during ART, stored at −30 °C, and oxidative stress was assessed using d-ROM and BAP tests (Free Radical Elective Evaluator), with results reported as oxidative stress (U.CARR) and antioxidant power (μmol/L) plus the modified BAP/d-ROM ratio. The d-ROM and BAP values were similar between groups, and the number of patients with a modified BAP/d-ROM ratio <1.0 did not differ. The paper’s conclusion is limited by its measurement approach and sample size, as oxidative stress indices were assessed from stored single-timepoint follicular fluid rather than longitudinal follicle-level outcomes, and it evaluated only unilateral endometrioma; This paper is centrally about endometriosis — it measures oxidative stress in follicular fluid from infertility patients with an endometrioma and reports no detectable difference from controls.

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Abstract

Purpose Follicular fluid (FF) might reflect the environment during follicle and oocyte growth, and an evaluation of oxidative stress in the FF might be useful in predicting oocyte quality. In order to measure the oxidative stress (OS) in the FF from a single follicle of patients with endometrioma (EM), we evaluated whether an EM might affect the environment of follicular growth.

Methods

Between December 2011 and July 2013, 26 patients with a unilateral EM (EM group) and 29 without EM (control group) were enrolled in this study. The FF was obtained during the first puncture of follicular aspiration, and was stored at −30 °C until it was assayed. A Free Radical Elective Evaluator (WISMERLL, USA) was used to perform d-ROM and BAP tests to measure oxidative stress (U.CARR) and antioxidant power (μmol/L).

Results

The d-ROM values in the EMC and control groups were 328.7 ± 97.8 and 414.9 ± 84.2, respectively, and the BAP values for the two groups were 2474.3 ± 432.0 and 2552.8 ± 435.58, respectively. These values were similar between the two groups (mean ± SD). The number of patients with a modified BAP/d-ROM ratio of <1.0 in the EM group was similar to that for the control group at 16 and 15, respectively (61.5 and 51.7 %).

Conclusions

The oxidative stress and antioxidant potential in the FF of the patients with unilateral EM showed values similar to those without an EM. Therefore, we concluded that EMs do not affect the environment for follicle growth during ART treatment. Similar content being viewed by others

References

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Arch Gynecol Obstet 293, 197–202 (2016). https://doi.org/10.1007/s00404-015-3834-7 Received: Accepted: Published: Issue date: DOI: https://doi.org/10.1007/s00404-015-3834-7

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Condition tags

endometriosisendometriomainfertility

MeSH descriptors

Endometriosis Follicular Fluid Infertility, Female Ovarian Follicle Oxidative Stress Adult Antioxidants Antioxidants Biomarkers Biomarkers Case-Control Studies Endometriosis Endometriosis Endometriosis Estradiol Estradiol Female Follicular Fluid Gonadotropins Gonadotropins

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