ATORVASTATIN CAN PREVENT HEPATIC REMOTE REPERFUSION INJURY
ABSTRACT Background: Some studies have shown that statins have a promising effect on protection against reperfusion injury. Aim: To evaluate the ability of ischemic postconditioning, statins and both associated to prevent or minimize reperfusion injury in the liver of rats subjected to ischemia and...
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Published in: | Arquivos brasileiros de cirurgia digestiva : ABCD Vol. 30; no. 3; pp. 197 - 200 |
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Main Authors: | , , , , , , , |
Format: | Journal Article |
Language: | English |
Published: |
Colégio Brasileiro de Cirurgia Digestiva
01-07-2017
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Subjects: | |
Online Access: | Get full text |
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Summary: | ABSTRACT Background: Some studies have shown that statins have a promising effect on protection against reperfusion injury. Aim: To evaluate the ability of ischemic postconditioning, statins and both associated to prevent or minimize reperfusion injury in the liver of rats subjected to ischemia and reperfusion by abdominal aorta clamping. Method: Were used 41 Wistar rats, which were distributed into five groups: ischemia and reperfusion (I/R), ischemic postcondictioning (IPC), postconditioning + statin (IPC+S), statin (S) and Sham. It was performed a medium laparotomy, dissection and isolation of the infra-renal abdominal aorta; excepting Sham group, all the others were submitted to the aorta clamping for 70 min (ischemia) and posterior clamping removing (reperfusion, 70 min). In the IPC and IPC+S groups, postconditioning was performed between the ischemia and reperfusion phases by four cycles of reperfusion and ischemia lasting 30 s each. In IPC+S and S groups, preceding the surgical procedure, administration of 3.4 mg/day of atorvastatin was performed for seven days by gavage. The left hepatic lobe was removed for histological study and euthanasia was performed. Results: The mean hepatic injury was 3 in the I/R group, 1.5 in the IPC group, 1.2 in the IPC+S group, 1.2 in the S group, and 0 in the SHAM group. The I/R group had a higher degree of tissue injury compared to the others in the statistical analysis and there was no difference between the others (p<0.01). Conclusion: Ischemic postconditioning and atorvastatin were able to minimize hepatic reperfusion injury, either alone or in combination.
RESUMO Racional: Alguns estudos têm demonstrado que as estatinas apresentam efeito promissor contra a lesão de reperfusão. Objetivo: Avaliar a capacidade do pós-condicionamento, estatina e ambos associados em prevenir ou minimizar a lesão de reperfusão à distância no fígado em ratos submetidos à isquemia e reperfusão por clampeamento aórtico. Método: Foram utilizados 41 ratos Wistar distribuídos em cinco grupos: isquemia e reperfusão (I/R), pós-condicionamento isquêmico (PCI), pós-condicionamento + estatina (PCI+E), estatina (E) e SHAM. Os animais foram anestesiados, submetidos à laparotomia, dissecção e isolamento da aorta abdominal infrarrenal; exceto o grupo SHAM, todos os outros foram submetidos ao clampeamento aórtico por 70 min (isquemia) e posterior retirada do clampe (reperfusão). Nos grupos PCI e PCI+E o pós-condicionamento foi realizado entre as fases de isquemia e reperfusão por quatro ciclos de reperfusão e isquemia durando 30 s cada. Nos grupos PCI+E e E, previamente ao procedimento cirúrgico foi realizada a administração de 3,4 mg/dia de atorvastatina durante sete dias por gavagem. Resultados: A média de lesão hepática foi 3 no grupo I/R, 1,5 no grupo PCI, 1,2 no grupo PCI+E, 1,2 no grupo E e 0 no grupo SHAM. O grupo I/R teve maior grau de lesão tecidual (p<0,01). Conclusão: O pós-condicionamento isquêmico e atorvastatina foram capazes de minimizar a lesão hepática de reperfusão remota, isoladamente e em associação. |
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Bibliography: | Conflicts of interest: none |
ISSN: | 0102-6720 0102-6720 2317-6326 |
DOI: | 10.1590/0102-6720201700030008 |