Superoxid dismutase activity in portal vein endothelium after partial liver resection

PURPOSE: To investigate superoxide dismutase (SOD) activity in the portal vein endothelium and malondialdehyde acid (MDA) production in liver tissue of rats submitted to 70% hepatectomy. METHODS:Twelve rats were distributed in two groups (hepatectomy and sham). Animals were sacrificed on post operative day 1 and portal vein, liver tissue and blood samples were collected. Portal vein SOD production was measured using lucigenin-amplified chemiluminescence assays. MDA measurement was used as an index of oxidative stress through the formation of TBARS (Thiobarbituric Acid Reactive Species). RESULTS: There was no difference in post operative bilirrubin, AST, ALT levels between groups. DHL level was higher in the hepatectomy group (p=0.01). MDA production in the remnant liver tissue and endothelial portal vein SOD activity were also significantly (p<0.05) elevated in the hepatectomy group when compared to control group. There was no correlation between MDA and SOD activity. SOD activity, on the other hand, showed a positive correlation with LDH level (p=0.038) and MDA levels showed a positive correlation with AST and ALT levels (p<0.001). CONCLUSION: There is an increased production of malondialdehyde acid in liver tissue after partial hepatectomy and increased activity of superoxide dismutase in portal vein endothelium as well.

Bibliographic Details

Main Authors:	Sayão Filho,Rogério Heggendorn, Perini,Marcos Vinicius, Cruz,José Arnaldo, Requena,Juliana, Barbeiro,Hermes Vieira, Molan,Nilza Trindade, Lopasso,Fabio Pinatel, D'Albuquerque,Luiz Augusto Carneiro, Cecconello,Ivan
Format:	Digital revista
Language:	English
Published:	Sociedade Brasileira para o Desenvolvimento da Pesquisa em Cirurgia 2013
Online Access:	http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0102-86502013000900004
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