Cited by 43Endometriosis Research and TreatmentEctopic Pregnancy Diagnosis and ManagementReproductive System and Pregnancy

Inflammatory cytokines differentially up-regulate human endometrial haptoglobin production in women with endometriosis

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Sharpe-Timms, K. L., Nabli, H., Zimmer, R. L., Birt, J. A., Davis, J. W.·2010·Human Reproduction

Abstract

BACKGROUND: Evidence suggests that eutopic endometrium from women with endometriosis (US-E) has intrinsic functional anomalies compared with women without endometriosis (US-C). We hypothesized that differences in endometrial haptoglobin (eHp) mRNA and protein levels exist between eutopic endometrium from US-E and US-C and that inflammatory mediators may be involved. METHODS: Endometrial stromal cells and tissue explants from US-E (n = 18) and US-C (n = 18) were cultured (24 h/48 h for cells/explants) with interleukin (IL)-1alpha, -1beta, -6, -8 or tumor necrosis factor-alpha (TNF-alpha) at 0-100 ng/ml. eHp protein in media and mRNA levels were quantified by enzyme-linked immunosorbent assay and quantitative PCR. RESULTS: In eutopic endometrial stromal cells from US-E, IL-1beta, IL-6 and TNF-alpha (10 ng/ml) increased eHp mRNA levels (P = 0.002, P < 0.001 and P < 0.001, respectively) and eHp protein (P = 0.023, 0.031 and 0.006, respectively) versus control. In endometrial tissues from US-E, IL-1beta, IL-6 and TNF-alpha increased eHp mRNA (P < 0.001, P = 0.017 and P < 0.001, respectively) and eHp protein (P < 0.001, P = 0.007 and 0.039, respectively) versus control. IL-1alpha and IL-8 had small or no effects on isolated endometrial cells or tissues. In US-C, IL-1beta, IL-8 and TNF-alpha each reduced eHp mRNA in endometrial stromal cells (all P < 0.001) versus control; IL-1alpha and IL-6 had no effect. eHp mRNA increased in endometrial tissues from US-C in response to IL-1beta (P = 0.008), IL-6 (P = 0.015) and TNF-alpha (P = 0.031) versus control; IL-1alpha or IL-8 had no effect. CONCLUSIONS: Endometrium from US-E differentially responds to specific inflammatory cytokines by production of eHp. We propose that up-regulation of endometrial eHp by inflammatory mediators disrupts normal endometrial function and may facilitate the pathogenesis of endometriosis.

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  1. Baumann H, Jahreis GP, Morella KK. Interaction of cytokine-and glucocorticoid-response elements of acute-phase plasma protein genes. J Biol Chem 1990;265:22275-22281.
  2. Review.
  3. Review.
  4. Bland JM, Altman DG. Logarithms. BMJ 1996a;312:700.
  5. Bland JM, Altman DG. Transforming data. BMJ 1996b;312:770.
  6. Bland JM, Altman DG. Transformations, means, and confidence intervals. BMJ 1996c;12:1079.
  7. Bowman BH. Haptoglobin. In: Bowman BH (ed). Hepatic Plasma Proteins. San Diego: Academic Press, 1993, 159 -167.
  8. D'Hooghe TM, Debrock S. Endometriosis, retrograde menstruation and peritoneal inflammation. Hum Reprod Update 2002;8:84-88.
  9. D'Hooghe TM, Bambra CS, Xiao L, Hill JA. The effect of menstruation and intrapelvic injection of endometrium on peritoneal fluid parameters in the baboon. Am J Obstet Gynecol 2001;184:917 -925.
  10. Review.
  11. Review.
  12. Review.
  13. Sharpe-Timms KL, Ricke EA, Piva M, Horowitz GM. Differential in vivo expression and localization of endometriosis protein-I (ENDO-I), a haptoglobin homologue, in endometrium and endometriotic lesions. Hum Reprod 2000;15:101 -105.
  14. Sharpe-Timms KL, Zimmer RL, Ricke EA, Piva MA, Horowitz GM. Endometriotic haptoglobin binds peritoneal macrophages and alters their function in endometriosis. Fertil Steril 2002;78: 810 -819.
  15. Review.

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Authors
Sharpe-Timms, K. L., Nabli, H., Zimmer, R. L., Birt, J. A., & Davis, J. W.
Affiliations
University of Missouri (US)
Corresponding author
Sharpe-Timms, K. L.
Venue
Human Reproduction
Published
2010-02-22
Volume
25
Issue
5
Pages
1241-1250
ISSN
  • 0268-1161 (ISSN-L)
  • 1460-2350
OpenAlex
W2149000495
Cited by
43
References
66
Citations by year
2026: 4 · 2025: 2 · 2023: 3 · 2022: 1 · 2021: 4 · 2020: 3 · 2019: 3 · 2018: 1 · 2017: 3 · 2016: 4 · 2015: 3 · 2014: 1 · 2013: 5 · 2012: 1
FWCI
4.19
Type
journal article
Language
en
Open access
Locations
  • Human Reproduction (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • National Institutes of Health (5r01hd040849-04)
  • Eunice Kennedy Shriver National Institute of Child Health and Human Development (HD040849)
Topics
  • Health Sciences › Medicine › Reproductive Medicine › Endometriosis Research and Treatment
  • Health Sciences › Medicine › Public Health, Environmental and Occupational Health › Ectopic Pregnancy Diagnosis and Management
  • Life Sciences › Immunology and Microbiology › Immunology › Reproductive System and Pregnancy
Keywords
endometriosis, inflammatory cytokines, endometrial stromal cells, IL-1β, interleukin-6, TNF-α, interleukin-8, interleukin-1 alpha, eutopic endometrium, gene expression regulation, endometritis
MeSH terms
Endometriosis, Endometrium, Female, Haptoglobins, Humans, RNA, Messenger, Tumor Necrosis Factor-alpha, Interleukin-6, Up-Regulation, Cytokines, Interleukin-8, Stromal Cells, Inflammation Mediators, Interleukin-1alpha, Interleukin-1beta, In Vitro Techniques

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