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Pyruvate kinase activation and lipoperoxidation after selective hepatic ischemia in Wistar rats / Ativação da piruvato quinase e lipoperoxidação após isquemia hepática seletiva em ratos Wistar
Boin, Ilka de Fátima Santana Ferreira; Castro e Silva, Orlando de; Souza, Maria Eliza Jordani de; Santos, Antonio Cardoso; Leonardi, Luiz Sergio.
  • Boin, Ilka de Fátima Santana Ferreira; State University of Campinas. Faculty of Medical Sciences. Digestive Surgery Department. Experimental Liver Transplantation Laboratory. São Paulo. BR
  • Castro e Silva, Orlando de; University of Sao Paulo. Faculty of Medicine of Ribeirão Preto. Department of Surgery and Anatomy. Division of Gastroenterology. Ribeirão Preto. BR
  • Souza, Maria Eliza Jordani de; University of Sao Paulo. Faculty of Medicine of Ribeirão Preto. Departament of Surgery and Anatomy. Unit of Liver Transplantation. Ribeirão Preto. BR
  • Santos, Antonio Cardoso; University of Sao Paulo. Faculty of Pharmaceutical Sciences of Ribeirão Preto. Ribeirão Preto. BR
  • Leonardi, Luiz Sergio; Universidade Estadual de Campinas. Faculty of Medical Sciences. Digestive Surgery Department. Campinas. BR
Acta cir. bras ; 21(supl.1): 19-23, 2006. ilus
Article in English, Portuguese | LILACS | ID: lil-438799
ABSTRACT

PURPOSE:

Hepatic ischemia and reperfusion can cause several problems in hepatic surgery. The aim of this study was to determine pyruvate kinase activation and lipid peroxidation after hepatic ischemia.

METHODS:

Twenty-four Wistar rats were submitted to 90 minutes of selective liver ischemia and 15 minutes of reperfusion. Twelve animals were submitted to selective liver ischemia and reperfusion (Group A) and the other 12 were submitted to sham operation (Group B). After 15 minutes of reperfusion, the following parameters were measured mean arterial pressure (MAP), alanine aminotransferase (ALT), glycemia (GLY), hepatic glycogen (GH), pyruvate kinase (PK) activation, hepatic glutathione (GSH) and malondialdehyde (MDA). Analysis of the results were made by the Student t-test and has been considered significant difference for p<0.05.

RESULTS:

A and B were differents for all parameters analized.

CONCLUSION:

The animals of group A showed reperfusion syndrome with a fall in MAP, activation of glycid metabolism through the glycolitic pathway and presence of lipid peroxidation compared to group B.
RESUMO

OBJETIVO:

A isquemia e reperfusão hepática podem causar graves repercussões hepatocelulares em cirurgias hepáticas. O objetivo deste estudo foi determinar o comportamento da piruvato EM PORTUGUES quinase e a lipoperoxidação após isquemia hepática.

MÉTODOS:

Foram utilizados vinte e quatro ratos Wistar machos divididos em dois grupos. Doze animais foram submetidos a 90 minutos de isquemia hepática seletiva e reperfusão hepática de por 15 minutos (pressão arterial média (PAM), alanina aminotransferase (ALT), glicemia (GLI), gicogênio hepático (GH), ativação da piruvato quinase (PQ), glutationa hepática (GSH) e malondialdeído (MDA). Os resultados foram analisados utilizando o teste t de Student sendo as diferenças consideradas significativas para p<0,05.

RESULTADOS:

Verificou-se diferença significativa entre os grupos em todos os parâmetros analisados.

CONCLUSÃO:

Verificou-se que os animais do grupo A mostraram síndrome de reperfusão com queda da PAM, ativação do metabolismo da glicose através da via glicolítica e presença de lipoperoxidação quando comparada com o grupo B.
Subject(s)

Full text: Available Index: LILACS (Americas) Main subject: Pyruvate Kinase / Reperfusion / Energy Metabolism / Ischemia / Liver Type of study: Etiology study Limits: Animals Language: English / Portuguese Journal: Acta cir. bras Journal subject: General Surgery / Procedimentos Cir£rgicos Operat¢rios Year: 2006 Type: Article Affiliation country: Brazil Institution/Affiliation country: State University of Campinas/BR / Universidade Estadual de Campinas/BR / University of Sao Paulo/BR

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Full text: Available Index: LILACS (Americas) Main subject: Pyruvate Kinase / Reperfusion / Energy Metabolism / Ischemia / Liver Type of study: Etiology study Limits: Animals Language: English / Portuguese Journal: Acta cir. bras Journal subject: General Surgery / Procedimentos Cir£rgicos Operat¢rios Year: 2006 Type: Article Affiliation country: Brazil Institution/Affiliation country: State University of Campinas/BR / Universidade Estadual de Campinas/BR / University of Sao Paulo/BR