Evaluation of erythrocyte band 3 phosphotyrosine level, glutathione content, CA-125, and human epididymal secretory protein E4 as combined parameters in endometriosis

Diagnostic accuracy OA: bronze CC0 ⤵ 15 in-corpus citations
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This study evaluated erythrocyte band 3 phosphotyrosine level, glutathione content, CA-125, and human epididymal secretory protein E4 as combined diagnostic parameters for endometriosis.

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Abstract

OBJECTIVE: To investigate the biochemical parameters of the erythrocyte response to diamide-induced oxidative stress, alone or as adjuncts to serum values of CA-125 and human epididymal secretory protein E4 (HE4), in the diagnosis and study of endometriosis. SETTING: University of Padova. DESIGN: Prospective study. PATIENT(S): Forty-five patients of reproductive age undergoing laparoscopy. INTERVENTION(S): All women were studied for endometriotic foci during laparoscopic surgery. Forty-one had laparoscopically and histologically confirmed endometriosis, and four did not. Twenty women with confirmed endometriosis were reassessed 1-4 months later. MAIN OUTCOME MEASURE(S): CA-125 and HE4 and two new parameters evaluated in erythrocytes after diamide-induced stress, that is, band 3 tyrosine phosphorylation (Tyr-P) level and decrease in total glutathione content (ΔGSH), were assessed in all patients. RESULT(S): In association with serum CA-125 levels but not with HE4, diamide-related erythrocyte band 3 Tyr-P and ΔGSH were significantly higher in patients with endometriosis and were able to discriminate with high sensitivity and specificity between patients before and after surgery. CONCLUSION(S): Endometriosis is associated with an increase in systemic oxidative stress, affecting the antioxidative defenses of circulating erythrocytes. All related implications, including evaluation of other oxidative stress-related changes, warrant further study.

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Condition tags

endometriosis

MeSH descriptors

Anion Exchange Protein 1, Erythrocyte Anion Exchange Protein 1, Erythrocyte CA-125 Antigen Endometriosis Epididymal Secretory Proteins Erythrocytes Glutathione Phosphotyrosine Uterine Diseases Adult Adult beta-Defensins beta-Defensins Biomarkers Biomarkers Biomarkers CA-125 Antigen CA-125 Antigen Case-Control Studies Case-Control Studies

Citation neighborhood (2-hop)

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References (29)

Cited by (17)

Source provenance

europepmc
last seen: 2026-10-19T06:17:24.038039+00:00
openalex
last seen: 2026-06-10T17:14:06.276822+00:00
pubmed
last seen: 2026-10-08T21:07:19.155540+00:00
License: CC0 · commercial use OK