Impact of Endometrioma Resection on Eutopic Endometrium Metabolite Contents: Noninvasive Evaluation of Endometrium Receptivity

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Endometrioma resection significantly decreased endometrial NAA, Lac, and Cr1 signals, indicating potential improvement in endometrial receptivity, unlike nonendometriotic cyst surgery.

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This study examined whether laparoscopic endometrioma resection changes metabolite peaks in eutopic endometrium during the window of implantation, using midluteal phase proton magnetic resonance spectroscopy. Twenty patients with uni- or bilateral endometrioma and 7 patients with nonendometriotic benign ovarian cysts underwent spectroscopy before surgery and again 3–5 months after surgery, measuring lactate, N-acetylaspartate, creatine 1/2, and choline. Compared with preoperative values, endometrioma surgery was associated with significant decreases in NAA, lactate, and creatine 1 signals, while choline and creatine 2 did not significantly change after cyst surgery; no difference was reported between unilateral and bilateral disease. The paper explicitly limits interpretation by inferring “improvement in endometrial receptivity” from metabolite signal changes rather than directly assessing implantation or clinical outcomes. This paper is centrally about endometriosis — it evaluates how endometrioma resection affects eutopic endometrium metabolite contents during implantation.

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Abstract

The aim of this study was to determine whether endometrioma resection alters most commonly defined endometrial metabolites, lactate (Lac), N-acetylaspartate (NAA), creatine 1 (Cr1), creatine 2 (Cr2), and choline (Cho) during the window of implantation. Twenty patients with uni- or bilateral endometrioma and 7 patients having nonendometriotic benign ovarian cyst were included. Midluteal phase magnetic resonance spectroscopy analysis of eutopic endometrium was performed before surgery. Second spectrum of endometrium was obtained 3 to 5 months after laparoscopic endometrioma resection. Pre- and postoperative endometrial peaks of Lac, NAA, Cr, and Cho were measured in units and denominated in parts per million (ppm). Compared to preoperative peak values, significantly decreased NAA, Lac, and Cr1 signals were noted in patients undergoing endometrioma surgery. Nearly 5-fold decline in the NAA signal occurred after endometrioma surgery (1.94 ± 3.24 vs 0.37 ± 0.55). Likewise, 2.5-fold decline in Lac signals was noted after endometrioma resection (2.81 ± 2.64 vs 1.06 ± 1.88). Both uni- and bilateral endometrioma affected endometrium signals the same. The peak intensity of Cho, Cr1, Cr2, NAA, and Lac did not alter significantly after nonendometriotic cyst surgery. Endometrioma surgery straightens endometrial NAA, Lac, and Cr1 peaks, suggesting improvement in endometrial receptivity.
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Abstract

The aim of this study was to determine whether endometrioma resection alters most commonly defined endometrial metabolites, lactate (Lac), N-acetylaspartate (NAA), creatine 1 (Cr1), creatine 2 (Cr2), and choline (Cho) during the window of implantation. Twenty patients with uni- or bilateral endometrioma and 7 patients having nonendometriotic benign ovarian cyst were included. Midluteal phase magnetic resonance spectroscopy analysis of eutopic endometrium was performed before surgery. Second spectrum of endometrium was obtained 3 to 5 months after laparoscopic endometrioma resection. Pre- and postoperative endometrial peaks of Lac, NAA, Cr, and Cho were measured in units and denominated in parts per million (ppm). Compared to preoperative peak values, significantly decreased NAA, Lac, and Cr1 signals were noted in patients undergoing endometrioma surgery. Nearly 5-fold decline in the NAA signal occurred after endometrioma surgery (1.94 ± 3.24 vs 0.37 ± 0.55). Likewise, 2.5-fold decline in Lac signals was noted after endometrioma resection (2.81 ± 2.64 vs 1.06 ± 1.88). Both uni- and bilateral endometrioma affected endometrium signals the same. The peak intensity of Cho, Cr1, Cr2, NAA, and Lac did not alter significantly after nonendometriotic cyst surgery. Endometrioma surgery straightens endometrial NAA, Lac, and Cr1 peaks, suggesting improvement in endometrial receptivity. Similar content being viewed by others

References

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endometriosisendometrioma

MeSH descriptors

Endometriosis Endometriosis Endometrium Endometrium Magnetic Resonance Spectroscopy Adult Aspartic Acid Aspartic Acid Aspartic Acid Aspartic Acid Choline Choline Choline Creatine Creatine Creatine Endometriosis Endometrium Female Humans

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