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- W2080681719 abstract "In Brief Objective: To determine the mechanism by which flutamide administration following trauma-hemorrhage (T-H) decreases cytokine production and hepatic injury under those conditions. Summary Background Data: Although studies have demonstrated that flutamide administration following T-H improves hepatic and immune functions, the mechanism by which flutamide produces the salutary effects remains unknown. Methods: Male Sprague-Dawley rats underwent a 5-cm laparotomy and hemorrhagic shock (40 mm Hg for ∼90 minutes), followed by resuscitation with 4 times the shed blood volume in the form of Ringer's lactate. Flutamide (25 mg/kg body weight, sc) was administered at the middle of resuscitation and animals were killed 2 hours thereafter. To block estrogen receptor (ER), ER antagonist ICI 182,780 was administrated with flutamide. Results: Hepatic injury, myeloperoxidase activity, nuclear factor-kappaB (NF-κB) DNA binding activity and protein expression of intercellular adhesion molecule-1, and cytokine-induced neutrophil chemoattractant (CINC-1 and CINC-3) markedly increased following T-H. Hepatic mRNA and plasma IL-6 levels were also elevated following T-H. The alterations in these parameters induced by T-H were significantly attenuated by flutamide administration. The decreased plasma estradiol levels following T-H were restored to sham levels in the flutamide-treated T-H animals. Coadministration of ICI 182,780 prevented those salutary effects of flutamide administration on pro-inflammatory responses and hepatic injury following T-H. Conclusion: These findings suggest that the reduction in the production of pro-inflammatory mediators and hepatic injury produced by flutamide administration following T-H is likely due to the down-regulation in hepatic NF-kappaB DNA binding activity. Moreover, the salutary effects of flutamide administration appear to be mediated at least in part via ER-related pathway. Although flutamide attenuates hepatic injury following trauma-hemorrhage, the mechanisms of its salutary effects are unknown. This study suggests that the flutamide mediates its salutary effects on hepatic function following trauma-hemorrhage via estrogen receptor-dependent down-regulation of hepatic chemokine and cytokine production, nuclear factor-κB DNA binding activity, and neutrophil accumulation." @default.
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- W2080681719 date "2007-02-01" @default.
- W2080681719 modified "2023-10-11" @default.
- W2080681719 title "Flutamide Attenuates Pro-inflammatory Cytokine Production and Hepatic Injury Following Trauma-Hemorrhage via Estrogen Receptor-related Pathway" @default.
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- W2080681719 doi "https://doi.org/10.1097/01.sla.0000232523.88621.17" @default.
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