Influence of portal branch ligation on the outcome of repeat dearterializations of an experimental liver tumor in the rat
| Autor: | Stig Bengmark, Bo G. Persson, Li-Qing Wang, Unne Stenram |
|---|---|
| Rok vydání: | 1994 |
| Předmět: |
Male
Pathology medicine.medical_specialty Necrosis Liver tumor medicine.medical_treatment Ischemia Urology Random Allocation Hepatic Artery Liver Neoplasms Experimental Occlusion Carcinoma Medicine Animals Rats Wistar Ligature Vein Ligation Analysis of Variance Neovascularization Pathologic business.industry Portal Vein General Medicine medicine.disease Rats medicine.anatomical_structure Oncology Surgery medicine.symptom business |
| Zdroj: | Journal of surgical oncology. 55(4) |
| ISSN: | 0022-4790 |
| Popis: | It has been suggested that the portal vein should be occluded during intermittent hepatic dearterialization in order to induce a more complete ischemia of the tumor. In this experiment the influence of portal branch ligation in combination with repeat dearterializations on a liver tumor was investigated. Twenty-seven rats were randomly allocated to sham treatment (n = 6); portal branch ligation (PBL) (n = 7); 120 min of repeat dearterialization (n = 7); and portal branch ligation (PBL) in combination with 50 min of repeat dearterialization (n = 7) (once a day during 5 days). The results showed that portal branch ligation alone did not alter the tumor growth compared with sham treatment (P0.05), nor did portal branch ligation in combination with repeat dearterializations for 50 min (P0.05). However, tumor growth delay was achieved following 120 min of repeat dearterializations without occlusion of the portal branch (P0.01 versus all the other groups). There was a significant weight loss of the lobe undergoing PBL, whether dearterialization was added or not (P0.001). The liver nucleotide/DNA and RNA/DNA ratio significantly decreased as well. Histological examination showed that50% of tumor cells became necrotic after repeat dearterializations for 2 hr indicating a significant damage to tumor tissue. In contrast, PBL in combination with repeat dearterializations for 50 min induced extensive liver necrosis without having any influence on tumor growth. |
| Databáze: | OpenAIRE |
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