en Related Fields Related Fields مقاله کامل Full Length/Original Article <strong>Background: </strong>A mouse model of lipopolysaccharide (LPS)-induced inflammation was used to investigate the effect of pharmacological inhibition of nuclear enzyme PARP-1 on oocyte maturation, apoptotic and necrotic death, as well as DNA integrity of follicular cells. Also, the relative expression of cumulus genes (<em>HAS2</em>, <em>COX2</em>, and <em>GREM1</em>) associated with oocyte developmental competence was assessed. <strong>Methods:</strong> Mice were treated with the PARP-1 inhibitor, 4-HQN, one hour before LPS administration. After 24 h, oocyte <em>in vitro</em> maturation was detected. Granulosa cell DNA damage was determined by the alkaline comet assay. Live, necrotic and apoptotic cells were identified using double vital staining by fluorescent dyes, Hoechst 33342 and propidium iodide. The expression levels of cumulus genes were assessed using reverse transcriptase PCR. <strong>Results:</strong> The administration of 4-HQN to LPS-treated mice ameliorated oocyte meiotic maturation and exerted a significant cytoprotective effect. 4-HQN attenuated LPS-induced DNA damage and favored cell survival by decreasing necrosis and apoptosis in granulosa cells. Exposure to 4-HQN increased mRNA expression levels for <em>HAS2</em>, <em>COX2</em>, and <em>GREM1</em> in cumulus cells. <strong>Conclusion:</strong> The obtained results indicate the involvement of PARP-1 in the pathogenesis of ovarian dysfunction caused by LPS. We suppose that this enzyme can be an attractive target for the therapy of inflammatory disorders in ovary. The protective action of PARP-1 inhibition could at least partly be associated with the reduction of necrotic death of follicular cells and also in other cells. However, the detailed mechanisms of the <em>favorable effect</em> of PARP inhibitors on endotoxin-induced ovarian disorders need to be further explored. Cell death, Gene Expression, Lipopolysaccharides, Oocytes, Poly (ADP-ribose) polymerase-1 44 52 http://ibj.pasteur.ac.ir/browse.php?a_code=A-10-4569-1&slc_lang=en&sid=1 Olena Kondratska elena-shepel@ukr.net 0000-0002-3496-0603 Yes Department of Immunophysiology, Bogomoletz Institute of Physiology, NAS of Ukraine Nataliya Grushka grunay@i.ua 0000-0001-9182-0108 No Department of Immunophysiology, Bogomoletz Institute of Physiology, NAS of Ukraine Svitlana Pavlovych spavl@biph.kiev.ua 0000-0001-7946-6679 No Department of Immunophysiology, Bogomoletz Institute of Physiology, NAS of Ukraine Nataliya Krasutska krasutska@gmail.com 0000-0002-0450-2425 No Department of Immunophysiology, Bogomoletz Institute of Physiology, NAS of Ukraine Serhii Tsyhankov vistss@gmail.com 0000-0001-6571-8628 No Department of Chemistry and Pharmacy, Nizhyn Mykola Gogol State University Roman Yanchii yanchii@i.ua 0000-0001-7129-7698 No Department of Immunophysiology, Bogomoletz Institute of Physiology, NAS of Ukraine