Source:http://linkedlifedata.com/resource/pubmed/id/16647456
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Predicate | Object |
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rdf:type | |
lifeskim:mentions | |
pubmed:issue |
3
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pubmed:dateCreated |
2006-5-1
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pubmed:abstractText |
Clinical results of portal vein arterialization (PVA) in liver transplantation are controversial. One reason for this is the lack of a standardized flow regulation. Our experiments in rats compared PVA with blood-flow regulation to PVA with hyperperfusion in heterotopic auxiliary liver transplantation (HALT). In group I (n = 19), the graft's portal vein was completely arterialized via the right renal artery in-stent technique, using a 0.3-mm stent, leading to a physiological average portal blood flow. In group II (n = 19), a 0.5-mm stent was used. In group II, the average portal blood flow after reperfusion was significantly elevated (group II: 6.4 +/- 1.5; group I: 1.7 +/- 0.4 mL/min/g of liver weight; P < .001). The sinusoidal diameter after reperfusion was significantly greater in group II (9.8 +/- 0.5 microm) than in group I (5.5 +/- 0.2 microm; P < .001). Red blood cell velocity in the dilated sinusoids was significantly lower in group II (171 +/- 18 microm/s) than in group I (252 +/- 13 microm/s). Stasis of erythrocytes occurred; consequently, the functional sinusoidal density was significantly reduced in group II (38 +/- 7%) compared with group I (50 +/- 3%; P < .01). Two hours after reperfusion of the portal vein, the number of apoptotic hepatocytes was significantly higher in group II than in group I (I: 0 +/- 0 vs II: 7 +/- 9 M30-positive hepatocytes/10 high-power fields). The 6-week survival rate was 9 of 11 in both groups. In group II, 6 of 9 grafts showed massive hepatocellular necroses after 6 weeks, whereas in group I, only 1 of 9 presented a slight hepatocellular necrosis. Finally, our results demonstrate negative effects of portal hyperperfusion in transplanted livers, which are correctable by adequate flow regulation.
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pubmed:language |
eng
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pubmed:journal | |
pubmed:citationSubset |
IM
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pubmed:status |
MEDLINE
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pubmed:month |
Apr
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pubmed:issn |
0041-1345
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pubmed:author | |
pubmed:issnType |
Print
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pubmed:volume |
38
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
725-9
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pubmed:dateRevised |
2006-11-15
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pubmed:meshHeading |
pubmed-meshheading:16647456-Animals,
pubmed-meshheading:16647456-Apoptosis,
pubmed-meshheading:16647456-Liver,
pubmed-meshheading:16647456-Liver Transplantation,
pubmed-meshheading:16647456-Male,
pubmed-meshheading:16647456-Microcirculation,
pubmed-meshheading:16647456-Models, Animal,
pubmed-meshheading:16647456-Portal Vein,
pubmed-meshheading:16647456-Postoperative Complications,
pubmed-meshheading:16647456-Rats,
pubmed-meshheading:16647456-Rats, Inbred Lew,
pubmed-meshheading:16647456-Stents,
pubmed-meshheading:16647456-Transplantation, Heterotopic
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pubmed:year |
2006
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pubmed:articleTitle |
Portal hyperperfusion causes disturbance of microcirculation and increased rate of hepatocellular apoptosis: investigations in heterotopic rat liver transplantation with portal vein arterialization.
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pubmed:affiliation |
Department of Visceral, University of Cologne, Cologne, Germany. Karina.Schleimer@medizin.uni-koeln.de
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pubmed:publicationType |
Journal Article,
Research Support, Non-U.S. Gov't
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