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Liver Damage using Suicide Genes A Model for Oval Cell Activation
Autor(es) : Bustos, M. (Matilde)
Sangro, B. (Bruno)
Alzuguren, P. (Pilar)
Gil, A.G. (Ana Gloria)
Ruiz, J. (Juan)
Beraza, N. (Naiara)
Qian, C. (Cheng)
Garcia-Pardo, A. (Ángeles)
Prieto, J. (Jesús)
Palabras clave : Antiviral Agents/pharmacology
Gene Therapy/adverse effects/methods
Genetic Vectors/administration & dosage/genetics
Fecha incorporación: 2000
Editorial : Elsevier
Versión del editor: http://ac.els-cdn.com/S0002944010645658/1-s2.0-S0002944010645658-main.pdf?_tid=9a1f62dd0c78f708eda4d16256129ee5&acdnat=1340094285_1d50bd8346575b87f179297306a5549f
ISSN: 0002-9440
Cita: Bustos M, Sangro B, Alzuguren P, Gil AG, Ruiz J, Beraza N, et al. Liver damage using suicide genes. A model for oval cell activation. Am J Pathol 2000 Aug;157(2):549-559.
Liver regeneration from the facultative hepatic stem cells, the oval cells, takes place in situations in which liver regeneration from pre-existing hepatocytes is prevented. Different models have been used to stimulate oval cell response. Many of them involve the use of carcinogenic agents with or without partial hepatectomy. In this study we show that adenovirus-mediated gene transfer of the suicide gene thymidine kinase followed by ganciclovir administration caused hepatotoxicity of variable intensity. Rats with moderate elevation in serum transaminases recovered normal liver architecture few weeks after adenovirus injection. In contrast, rats with severe liver damage exhibited a marked and persisting activation of oval cells accompanied by ductular hyperplasia. In some rats, such lesion eventually evolved to cholangiofibrosis and in one rat to cholangiocarcinoma. Deposition of fibronectin and increased number of hepatic stellate cells were found in association with oval cells and cholangiofibrotic lesions. Hepatocyte growth factor was hyperexpressed in the livers with intense oval cell response or ductular proliferation, suggesting a participation of this factor in those lesions. In summary, our data demonstrate activation of oval cell response after gene transfer of thymidine kinase followed by ganciclovir administration. These findings indicate that high doses of this therapy causes liver damage together with an impairment in hepatocellular regeneration.
Enlace permanente: http://hdl.handle.net/10171/23390
Aparece en las colecciones: DA - CIMA - Terapia génica y Hepatología - Morfología e imagen - Artículos de revista
DA - CUN - Hepatología - Artículos de revista

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Fichero:  Am J Pathol 2000. 549.pdf
Tamaño:  4,85 MB
Formato:  Adobe PDF
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