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Estudo experimental do impacto da clampagem selectiva da veia porta na função hepatocelular

2009Journal article Open access
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dc.contributor.authorTralhão, JG
dc.contributor.authorAbrantes, AM
dc.contributor.authorGonçalves, C
dc.contributor.authorCarvalho, C
dc.contributor.authorPortela, I
dc.contributor.authorLaranjo, M
dc.contributor.authorOliveiros, B
dc.contributor.authorCardoso, D
dc.contributor.authorRibeiro, AB
dc.contributor.authorBotelho, MF
dc.contributor.authorCastro e Sousa, F
dc.date.accessioned2011-03-25T16:35:57Z
dc.date.available2011-03-25T16:35:57Z
dc.date.issued2009
dc.description.abstractThe influence of selective clamping of the elements of hepatic pedicle in the hepatocellular function and viability were evaluated in our department. AIM: Study the effect of selective clamping of the portal vein (CPV) in hepatocellular function in an animal model with normal liver. METHOD: Three groups of Wistar rats (males, 2 months) were subjected a CPV for 60 min: group A (n=21) submitted to a continuous inflow occlusion; group B (n=12) underwent to a CPV for 30 min with 5 min of reperfusion; group C (n=10) underwent a CPV for 15 min with 5 min of reperfusion. The group D (n=9) was not subjected to a CPV. A hepatic biopsy was done at the end of surgery. The degree of tissue injury was evaluated using: 1) blood markers: AST, ALT, total bilirubin (TB), GGT alkaline-phosphatase, LDH and hepatic extraction fraction (HEF) by radioisotopic methods three days before laparotomy (BS) and after surgery (AS); 2) apoptosis, necrosis were investigated after collagenase cell isolation from hepatectomy pieces by flow-cytometry using the followed probes: propidium-iodide and annexin-V. Statistical analysis: variance analysis, post-hoc comparisons by Turkey-test (p<0.05). RESULTS: 1) Mortality: Group A - 62%, Group B - 17%, Group C - 30%, Group D - 0% (p<0.03). 2) We observed statistical differences in these parameters: ALT (p<0,025) and LDH (p<0,002) preferentially in groups A but without differences between the A,B,C and D Groups (ns). 3) We also verified a significant decrease in HEF values (p<0,0001) preferentially in group A without differences between the groups. 4) No difference were observed when analysed apoptosis and necrosis and cell viability between the groups. CONCLUSIONS: Postoperative liver failure is the leading cause of mortality after hepatectomy, however selective clamping of the portal vein, is reflected in an increase in cell viability and a decrease in the type of cell death (necrosis ou apoptosis) compared to studies carried out previously by us and thus may be regarded as an alternative to the Pringle maneuver. However, selective clamping of the portal vein for periods above 30' should be avoided, given the high mortality verified.por
dc.identifier.citationRev Port Cir Cardiotorac Vasc. 2009 Jul-Sep;16(3):171-6.por
dc.identifier.urihttp://hdl.handle.net/10400.4/1001
dc.language.isoporpor
dc.peerreviewedyespor
dc.subjectHepatócitospor
dc.subjectVeia Portapor
dc.subjectFígadopor
dc.titleEstudo experimental do impacto da clampagem selectiva da veia porta na função hepatocelularpor
dc.title.alternativeThe impact of selective clamping of portal vein in hepatocellular function. An experimental studypor
dc.typejournal article
dspace.entity.typePublication
rcaap.rightsopenAccesspor
rcaap.typearticlepor

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