Evaluation of the therapeutic effect of methylene blue on the liver of rats submitted to ischemia and reperfusion
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Citações na Scopus
3
Tipo de produção
article
Data de publicação
2018
Título da Revista
ISSN da Revista
Título do Volume
Editora
ACTA CIRURGICA BRASILEIRA
Autores
SILVEIRA, Marina Rodrigues Garcia
ZORZI, Patricia
LIU, Jordan Bistafa
CAMPOS, Daniel Tofoli Queiroz
VICTORINO, Joao Paulo
JORDANI, Maria Cecilia
MENDES, Karina Dal Sasso
EVORA, Paulo Roberto Barbosa
Citação
ACTA CIRURGICA BRASILEIRA, v.33, n.12, p.1043-1051, 2018
Resumo
Purpose: To analyze the effect of methylene blue (MB) therapy during the liver ischemia-reperfusion injury (I/R) process. Methods: Thirty-five male Wistar rats were used, (70%) submitted to partial ischemia (IR) or not (NIR) (30%) were obtained from the same animal. These animals were divided into six groups: 1) Sham (SH), 2) Sham with MB (SH-MB); 3) I/R, submitted to 60 minutes of partial ischemia and 15 minutes of reperfusion; 4) NI/R, without I/R obtained from the same animal of group I/R; 5) I/R-MB submitted to I/R and MB and 6) NI/R-MB, without I/R. Mitochondria) function was evaluated. Osmotic swelling of mitochondria as well as the determination of malondialdehyde (MDA) was evaluated. Serum (ALT/AST) dosages were also performed. MB was used at the concentration of 15mg/kg, 15 minutes before hepatic reperfusion. Statistical analysis was done by the Mann Whitney test at 5%. Results: State 3 shows inhibition in all ischemic groups. State 4 was increased in all groups, except the I/R-MB and NI/R-MB groups. RCR showed a decrease in all I/R and NI/R groups. Mitochondria) osmotic swelling showed an increase in all I/R NI/R groups in the presence or absence of MB. About MDA, there was a decrease in SH values in the presence of MB and this decrease was maintained in the I/R group. AST levels were increased in all ischemic with or without MB. Conclusions: The methylene blue was not able to restore the mitochondria) parameters studied. Also, it was able to decrease lipid peroxidation, preventing the formation of reactive oxygen species.
Palavras-chave
Ischemia, Reperfusion, Methylene Blue, Mitochondria, Liver, Rats
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