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Abstract Title:

Sulforaphane protects liver injury induced by intestinal ischemia reperfusion through Nrf2-ARE pathway.

Abstract Source:

World J Gastroenterol. 2010 Jun 28;16(24):3002-10. PMID: 20572303

Abstract Author(s):

Hai-Dong Zhao, Feng Zhang, Gang Shen, Yu-Bing Li, Ying-Hua Li, Hui-Rong Jing, Ling-Fei Ma, Ji-Hong Yao, Xiao-Feng Tian

Article Affiliation:

Department of General Surgery, Second Affiliated Hospital of Dalian Medical University, Dalian 116023, Liaoning Province, China.

Abstract:

AIM: To investigate the effect of sulforaphane (SFN) on regulation of NF-E2-related factor-2 (Nrf2)-antioxidant response element (ARE) pathway in liver injury induced by intestinal ischemia/reperfusion (I/R). METHODS: Rats were divided randomly into four experimental groups: control, SFN control, intestinal I/R and SFN pretreatment groups (n = 8 in each group). The intestinal I/R model was established by clamping the superior mesenteric artery for 1 h and 2 h reperfusion. In the SFN pretreatment group, surgery was performed as in the intestinal I/R group, with intraperitoneal administration of 3 mg/kg SFN 1 h before the operation. Intestine and liver histology was investigated. Serum levels of aspartate aminotransferase (AST), and alanine aminotransferase (ALT) were measured. Liver tissue superoxide dismutase (SOD), myeloperoxidase (MPO), glutathione (GSH) and glutathione peroxidase (GSH-Px) activity were assayed. The liver transcription factor Nrf2 and heme oxygenase-1 (HO-1) were determined by immunohistochemical analysis and Western blotting analysis. RESULTS: Intestinal I/R induced intestinal and liver injury, characterized by histological changes as well as a significant increase in serum AST and ALT levels (AST: 260.13 +/- 40.17 U/L vs 186.00 +/- 24.21 U/L, P<0.01; ALT: 139.63 +/- 11.35 U/L vs 48.38 +/- 10.73 U/L, P<0.01), all of which were reduced by pretreatment with SFN, respectively (AST: 260.13 +/- 40.17 U/L vs 216.63 +/- 22.65 U/L, P<0.05; ALT: 139.63 +/- 11.35 U/L vs 97.63 +/- 15.56 U/L, P<0.01). The activity of SOD in the liver tissue decreased after intestinal I/R (P<0.01), which was enhanced by SFN pretreatment (P<0.05). In addition, compared with the control group, SFN markedly reduced liver tissue MPO activity (P<0.05) and elevated liver tissue GSH and GSH-Px activity (P<0.05, P<0.05), which was in parallel with the increased level of liver Nrf2 and HO-1 expression. CONCLUSION: SFN pretreatment attenuates liver injury induced by intestinal I/R in rats, attributable to the antioxidant effect through Nrf2-ARE pathway.

Study Type : Animal Study

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Sayer Ji
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