Epithelial neutrophil-activating peptide 78 concentrations are elevated in the peritoneal fluid of women with endometriosis

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Epithelial neutrophil-activating peptide 78 (ENA-78) levels were found to be significantly higher in the peritoneal fluid of women diagnosed with endometriosis compared to those without the condition.

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Abstract

ObjectiveTo investigate the presence of epithelial neutrophil-activating peptide 78 (ENA-78) in peritoneal fluid of women with and without endometriosis and to identify the cells that produce this inflammatory protein.DesignCase-control study.SettingUniversity hospital.Patient(s)Eighteen women with and 9 women without endometriosis.Main outcome measure(s)ENA-78 protein and mRNA levels were compared among women with and without endometriosis in samples of peritoneal fluid, samples of endometriotic lesions obtained by biopsy during laparoscopy, and peritoneal macrophages. Enzyme-linked immunosorbent assay, reverse transcription polymerase chain reaction, and in situ hybridization methods were used. Secretion of ENA-78 protein by interleukin-1beta-stimulated endometriotic stromal cells and in the media of lipopolysaccharide-stimulated peritoneal macrophages were compared to that in unstimulated cell cultures.Result(s)Peritoneal fluid concentrations of ENA-78 were significantly higher in affected women than in controls. Ectopic epithelial and stromal cells and peritoneal macrophages express ENA-78 messenger RNA. Interleukin-1beta stimulation of stromal cell cultures resulted in a 23-fold increase in ENA-78 concentration, and lipopolysaccharide stimulation of peritoneal macrophages increased concentrations by 8-fold.Conclusion(s)Levels of ENA-78 are elevated in the peritoneal fluid of women with endometriosis. Ectopic glandular cells, ectopic stromal cells, and peritoneal macrophages express this inflammatory chemokine. Epithelial neutrophil-activating peptide 78 may play an important role in the pathogenesis of endometriosis.

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Condition tags

endometriosis

MeSH descriptors

Ascitic Fluid Chemokines, CXC Endometriosis Interleukin-8 Interleukin-8 Ascitic Fluid Case-Control Studies Chemokine CXCL5 Endometriosis Female Humans In Situ Hybridization Interleukin-1 Interleukin-1 Interleukin-8 Interleukin-8 Lipopolysaccharides Lipopolysaccharides Macrophages, Peritoneal Macrophages, Peritoneal

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References (27)

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