Oxidative Cell Injury as a Predictor of Endometriosis Progression

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This controlled trial found higher levels of DNA damage (8-OHdG) and lower DNA repair (OGG1) biomarkers in endometriosis patients, suggesting oxidative stress can predict disease severity.

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This prospective controlled trial investigated oxidative stress biomarkers related to cell injury and DNA repair in 44 women with endometriosis (stage I/II n=14, stage III/IV n=16) and 14 controls, measuring markers such as 8-hydroxy-2-deoxyguanosine, 8-oxoguanine DNA glycosylase (OGG1), protein carbonyls, lipid peroxidation, reactive oxygen species, and total antioxidant capacity in peritoneal fluid and tissue. Higher 8-OHdG and protein carbonyl levels were observed in endometriosis, while OGG1 expression was lower, but ROS, antioxidant capacity, and lipid peroxidation did not differ across endometriosis stages and controls. The authors built a multivariable predictive model using receiver–operating characteristic analysis that showed high discrimination among controls, stage I/II, and stage III/IV with a concordance index of 0.87. A limitation noted in the provided text is that no specific technical details about the longitudinal aspect of “progression” measurement or how progression was confirmed over time are described beyond the prospective framing. This paper is centrally about endometriosis — it evaluates oxidative cell injury and DNA damage/repair biomarkers as predictors of endometriosis severity and progression.

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Abstract

Background There is increasing evidence that oxidative stress is one of the key factors for progression of endometriosis. In this prospective controlled trial, we measured 6 different biomarkers of oxidative stress targeting protein, lipid, and DNA to quantify the severity and progression of endometriosis and establish a diagnostic marker for the disease.

Methods

A total of 62 consecutive patients were identified and enrolled in this study. After exclusion criteria, 44 patients were allocated to 3 groups: stage I/II (n = 14), stage III/IV (n = 16), and a control group (n = 14). The levels of 8-hydroxy-2-deoxyguanosine (8-OHdG), 8-oxoguanine DNA glycosylase (OGG1), protein carbonyl (PC), lipid peroxidation (LPO), reactive oxygen species (ROS), and total antioxidant capacity (TAC) were accessed in peritoneal fluid and tissue.

Results

Significantly higher levels of 8-OHdG and PC were seen in patients with endometriosis, in addition OGG1 expression was found to be significantly lower in patients with endometriosis (P < .001, P = .001, P = .033, respectively); ROS, TAC, and LPO were similar in stages I/II, stages III/IV, and control group. A predictive model was built using multivariable analyses and receiver–operating characteristics curves. The ability to predict and distinguish between patients without endometriosis, stage I/II endometriosis, and stage III/IV was very high. This model was highly discriminatory and had a concordance index of 0.87.

Conclusion

In this cohort, higher DNA damage and lower DNA repair activity was related to endometriosis progression. Our results indicate that oxidative stress as a biomarker of cell injury can be used as a reliable quantitative test of endometriosis severity. Similar content being viewed by others

References

Carvalho L, Podgaec S, Bellodi-Privato M, Falcone T, Abrao MS. Role of eutopic endometrium in pelvic endometriosis. J Minim Invasive Gynecol. 2011;18(4):419–427. Falcone T, Lebovic DI. Clinical management of endometriosis. Obstet Gynecol. 2011;118(3):691–705. Bassi MA, Podgaec S, Dias Junior JA, Sobrado CW, D Amico Filho N. Bowel endometriosis: a benign disease? [in Portuguese]. Rev Assoc Med Bras. 2009;55(5):611–616. Giudice LC. Clinical practice. Endometriosis. N Engl J Med 2010;362 25: 2389–2398. The National Women’s Health Information Council. Understanding endometriosis: Past, present and future. 2005. Revised American Society for Reproductive Medicine classification of endometriosis: 1996. Fertil Steril. 1997;67(5):817–821. Bedaiwy MA, Hussein MR, Biscotti C, Falcone T. Pelvic endometriosis is rarely associated with ovarian borderline tumours, cytologic and architectural atypia: a clinicopathologic study. Pathol Oncol Res. 2009;15(1):81–88. Ngo C, Chereau C, Nicco C, Weill B, Chapron C, Batteux F. Reactive oxygen species controls endometriosis progression. Am J Pathol. 2009;175(1):225–234. Kao SH, Huang HC, Hsieh RH, Chen SC, Tsai MC, Tzeng CR. Oxidative damage and mitochondrial DNA mutations with endometriosis. Ann N Y Acad Sci. 2005;1042:186–194. Szczepanska M, Kozlik J, Skrzypczak J, Mikolajczyk M. Oxidative stress may be a piece in the endometriosis puzzle. Fertil Steril. 2003;79(6):1288–1293. Gupta S, Agarwal A, Krajcir N, Alvarez JG. Role of oxidative stress in endometriosis. Reprod Biomed Online. 2006;13(1):126–134. Watt J, Ewart MA, Greig FH, Oldroyd KG, Wadsworth RM, Kennedy S. The effect of reactive oxygen species on whole blood aggregation and the endothelial cell-platelet interaction in patients with coronary heart disease. Thromb Res. 2012;130(2):210–215. Galea E, Launay N, Portero-Otin M, et al. Oxidative stress underlying axonal degeneration in adrenoleukodystrophy: a paradigm for multifactorial neurodegenerative diseases? Biochim Biophys Acta. 2012;1822(9):1475–1488. Wu LL, Chiou CC, Chang PY, Wu JT. Urinary 8-OHdG: a marker of oxidative stress to DNA and a risk factor for cancer, atherosclerosis and diabetics. Clin Chim Acta. 2004;339(1–2):1–9. Carvalho LFP, Samadder AN, Agarwal A, Fernandes LFC, Abrão MS. Oxidative stress biomarkers in patients with endometriosis: systematic review. Arch Gynecol Obstet. 2012;286(4):1033–1040. Hendin BN, Kolettis PN, Sharma RK, Thomas AJ, Jr. Agarwal A. Varicocele is associated with elevated spermatozoal reactive oxygen species production and diminished seminal plasma antioxidant capacity. J Urol. 1999;161(6):1831–1834. Sharma RK, Pasqualotto FF, Nelson DR, Thomas AJ, Jr. Agarwal A. The reactive oxygen species - total antioxidant capacity score is a new measure of oxidative stress to predict male infertility. Hum Reprod. 1999;14(11):2801–2807. Shekarriz M, Thomas AJ, Jr. Agarwal A. Effects of time and sperm concentration on reactive oxygen species formation in human semen. Arch Androl. 1995;34(2):69–75. Ma H, Wang J, Abdel-Rahman SZ, Boor PJ, Khan MF. Oxidative DNA damage and its repair in rat spleen following subchronic exposure to aniline. Toxicol Appl Pharmacol. 2008;233(2):247–253. Valavanidis A, Vlachogianni T, Fiotakis C. 8-hydroxy-2′ -deoxyguanosine(8-OHdG): a critical biomarker of oxidative stress and carcinogenesis J Environ Sci Health C Environ Carcinog Ecotoxicol Rev. 2009;27(2):120–139. Matsuzaki S, Schubert B. Oxidative stress status in normal ovarian cortex surrounding ovarian endometriosis. Fertil Steril. 2010;93(7):2431–2432. Fujii H, Kono K, Nakai K, et al. Oxidative and nitrosative stress and progression of diabetic nephropathy in type 2 diabetes. Am J Nephrol. 2010;31(4):342–352. Isobe C, Abe T, Terayama Y. Levels of reduced and oxidized coenzyme Q-10 and 8-hydroxy-2′-deoxyguanosine in the cerebrospinal fluid of patients with living parkinson’s disease demonstrate that mitochondrial oxidative damage and/or oxidative DNA damage contributes to the neurodegenerative process. Neurosci Lett. 2010;469(1):159–163. Mahfouz R, Sharma R, Sharma D, Sabanegh E, Agarwal A. Diagnostic value of the total antioxidant capacity(TAC) in human seminal plasma. Fertil Steril. 2009;91(3):805–811. Van Langendonckt A, Casanas-Roux F, Donnez J. Oxidative stress and peritoneal endometriosis. Fertil Steril. 2002;77(5):861–870. Oner-Iyidogan Y, Kocak H, Gurdol F, Korkmaz D, Buyru F. Indices of oxidative stress in eutopic and ectopic endometria of women with endometriosis. Gynecol Obstet Invest. 2004;57(4):214–217. Janero DR. Malondialdehyde and thiobarbituric acid-reactivity as diagnostic indices of lipid peroxidation and peroxidative tissue injury. Free Radic Biol Med. 1990;9(6):515–540. Bedaiwy MA, Goldberg JM, Falcone T, et al. Relationship between oxidative stress and embryotoxicity of hydrosalpingeal fluid. Hum Reprod. 2002;17(3):601–604. Jackson LW, Schisterman EF, Dey-Rao R, Browne R, Armstrong D. Oxidative stress and endometriosis. Hum Reprod. 2005;20(7):2014–2020. Verit FF, Erel O, Celik N. Serum paraoxonase-1 activity in women with endometriosis and its relationship with the stage of the disease. Hum Reprod. 2008;23(1):100–104. Shanti A, Santanam N, Morales AJ, Parthasarathy S, Murphy AA. Autoantibodies to markers of oxidative stress are elevated in women with endometriosis. Fertil Steril. 1999;71(6):1115–1118. Foyouzi N, Berkkanoglu M, Arici A, Kwintkiewicz J, Izquierdo D, Duleba AJ. Effects of oxidants and antioxidants on proliferation of endometrial stromal cells. Fertil Steril. 2004;82(suppl 3):1019–1022. Leconte M, Nicco C, Ngo C, et al. The mTOR/AKT inhibitor temsirolimus prevents deep infiltrating endometriosis in mice. Am J Pathol. 2011;179(2):880–889. Yamaguchi K, Mandai M, Toyokuni S, et al. Contents of endometriotic cysts, especially the high concentration of free iron, are a possible cause of carcinogenesis in the cysts through the iron-induced persistent oxidative stress. Clin Cancer Res. 2008;14(1):32–40. Poljsak B, Milisav I, Lampe T, Ostan I. Reproductive benefit of oxidative damage: An oxidative stress “malevolence”? Oxid Med Cell Longev. 2011;2011:760978. Dalle-Donne I, Rossi R, Giustarini D, Milzani A, Colombo R. Protein carbonyl groups as biomarkers of oxidative stress. Clin Chim Acta. 2003;329(1–2):23–38. Podgaec S, Abrao MS, Dias JA Jr, Rizzo LV, de Oliveira RM, Baracat EC. Endometriosis: an inflammatory disease with a Th2 immune response component. Hum Reprod. 2007;22(5):1373–1379. Parazzini F, Chiaffarino F, Surace M, et al. Selected food intake and risk of endometriosis Hum Reprod. 2004;19(8):1755–1759. Mier-Cabrera J, Aburto-Soto T, Burrola-Mendez S, et al. Women with endometriosis improved their peripheral antioxidant markers after the application of a high antioxidant diet. Reprod Biol Endocrinol. 2009;7:54. Defrere S, Lousse JC, Gonzalez-Ramos R, Colette S, Donnez J, Van Langendonckt A. Potential involvement of iron in the pathogenesis of peritoneal endometriosis. Mol Hum Reprod. 2008;14(7):377–385. Agarwal A, Gupta S, Sharma RK. Role of oxidative stress in female reproduction. Reprod Biol Endocrinol. 2005;3:28. Author information Authors and Affiliations Corresponding author Rights and permissions About this article Cite this article Carvalho, L.F.P., Abrão, M.S., Biscotti, C. et al. Oxidative Cell Injury as a Predictor of Endometriosis Progression. Reprod. Sci. 20, 688–698 (2013). https://doi.org/10.1177/1933719112466301 Published: Issue date: DOI: https://doi.org/10.1177/1933719112466301

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endometriosis

MeSH descriptors

Endometriosis Oxidative Stress 8-Hydroxy-2'-Deoxyguanosine Adult Ascitic Fluid Ascitic Fluid Biomarkers Biomarkers Biopsy Case-Control Studies Deoxyguanosine Deoxyguanosine Deoxyguanosine Disease Progression DNA Damage DNA Glycosylases DNA Glycosylases DNA Repair Endometriosis Endometriosis

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