Growth-regulated α expression in the peritoneal environment with endometriosis

E Oral, Engin Oral, Emre Seli, E Seli, M O Bahtiyar, Mert Ozan Bahtiyar, D L Olive, D LOLIVE, Aydın Arıcı, A Arici
Obstetrics and gynecology · 1996 · vol. 88(6) , pp. 1050–1056 · doi:10.1016/s0029-7844(96)00361-4 · PMID:8942852 · W1996806530
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Abstract

OBJECTIVE: To investigate the presence and modulation of growth-regulated alpha, a member of the chemokine family with neutrophil chemotactic activity, in the peritoneal fluid of women with or without endometriosis. METHODS: Peritoneal fluid samples were obtained at laparoscopy from 63 women with endometriosis and 19 fertile women without endometriosis. Endometrial tissue was obtained from uteri after hysterectomy for reasons other than endometrial disease or from endometrial biopsies of reproductive-age women. Cellular RNA was extracted and northern blots were hybridized with an oligonucleotide probe complementary to a specific sequence of growth-regulated alpha messenger RNA. Growth-regulated alpha in peritoneal fluid and culture supernatant was quantified using enzyme-linked immunosorbent assay. Statistical analyses were performed using Kruskal-Wallis and Mann-Whitney tests. RESULTS: The median (range) concentration of growth-regulated alpha in peritoneal fluid samples from 19 normal fertile women was 27 pg/mL (0-108), from 24 women with moderate endometriosis 34 pg/mL (8-150), and from seven with severe endometriosis was 73 pg/mL (10-221) (P = .04, P = .01, respectively). In the moderate and severe endometriosis groups, the levels of growth-regulated alpha were significantly higher in the peritoneal fluid of women with untreated endometriosis (73 pg/mL [10-221]) than in women with medically treated endometriosis (25 pg/mL [8-47]). In mesothelial and endometrial stromal cells in culture, growth-regulated alpha messenger RNA and protein were detectable constitutively; however, both interleukin-1 alpha and tumor necrosis factor-alpha induced higher levels of growth-regulated alpha messenger RNA and protein in a dose- and time-dependent manner. CONCLUSIONS: Growth-regulated alpha levels are elevated in the peritoneal fluid of women with moderate and severe endometriosis. This chemotactic factor, which acts via the interleukin-8 receptor, may play a role in the pathogenesis of endometriosis.

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Condition tags

mesh:D004715endometriosis

MeSH descriptors

Ascitic Fluid Chemokines, CXC Chemotactic Factors Endometriosis Growth Inhibitors Growth Substances Intercellular Signaling Peptides and Proteins Adult Ascitic Fluid Cells, Cultured Chemokine CXCL1 Chemotactic Factors Chemotactic Factors Chemotactic Factors Endometriosis Endometrium Endometrium Endometrium Epithelial Cells Epithelium

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