Pathogenesis of FOLFOX induced sinusoidal obstruction syndrome in a murine chemotherapy model

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dc.contributor.authorRobinson, S.
dc.contributor.authorMann, J.
dc.contributor.authorVasilaki, A.
dc.contributor.authorMathers, J.
dc.contributor.authorBurt, A.
dc.contributor.authorOakley, F.
dc.contributor.authorWhite, S.
dc.contributor.authorMann, D.
dc.date.issued2013
dc.description.abstract<h4>Background & aims</h4>Sinusoidal obstruction syndrome (SOS) following oxaliplatin based chemotherapy can have a significant impact on post-operative outcome following resection of colorectal liver metastases. To date no relevant experimental models of oxaliplatin induced SOS have been described. The aim of this project was to establish a rodent model which could be utilised to investigate mechanisms underlying SOS to aid the development of therapeutic strategies.<h4>Methods</h4>C57Bl/6 mice, maintained on a purified diet, were treated with intra-peritoneal FOLFOX (n=10), or vehicle (n=10), weekly for five weeks and culled one week following final treatment. Sections of the liver and spleen were fixed in formalin and paraffin embedded for histological analysis. The role of oxidative stress on experimental-induced SOS was determined by dietary supplementation with butylated hydroxyanisole and N-acetylcysteine.<h4>Results</h4>FOLFOX treatment was associated with the development of sinusoidal dilatation and hepatocyte atrophy on H&E stained sections of the liver in keeping with SOS. Immunohistochemistry for p21 demonstrated the presence of replicative senescence within the sinusoidal endothelium. FOLFOX induced endothelial damage leads to a pro-thrombotic state within the liver associated with upregulation of PAI-1 (p<0.001), vWF (p<0.01) and Factor X (p<0.001), which may contribute to the propagation of liver injury. Dietary supplementation with the antioxidant BHA prevented the development of significant SOS.<h4>Conclusions</h4>We have developed the first reproducible model of chemotherapy induced SOS that reflects the pathogenesis of this disease in patients. It appears that the use of antioxidants alongside oxaliplatin based chemotherapy may be of value in preventing the development of SOS in patients with colorectal liver metastases.
dc.description.statementofresponsibilityS.M. Robinson, J. Mann, A. Vasilaki, J. Mathers, A.D. Burt, F. Oakley, S.A. White, D.A. Mann
dc.identifier.citationJournal of Hepatology, 2013; 59(2):318-326
dc.identifier.doi10.1016/j.jhep.2013.04.014
dc.identifier.issn0168-8278
dc.identifier.issn1600-0641
dc.identifier.orcidBurt, A. [0000-0002-3011-7774]
dc.identifier.urihttp://hdl.handle.net/2440/79593
dc.language.isoen
dc.publisherElsevier BV
dc.rights© 2013 European Association for the Study of the Liver. Published by Elsevier B.V. All rights reserved.
dc.source.urihttps://doi.org/10.1016/j.jhep.2013.04.014
dc.subjectSinusoidal obstruction syndrome
dc.subjectOxaliplatin
dc.subjectColorectal liver metastases
dc.subjectChemotherapy induced liver injury
dc.titlePathogenesis of FOLFOX induced sinusoidal obstruction syndrome in a murine chemotherapy model
dc.typeJournal article
pubs.publication-statusPublished

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