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Role of sinusoidal endothelial cells in liver disease
Author(s) -
OKANOUE TAKESHI,
MORI TAKASHI,
SAKAMOTO SHINICHI,
ITOH YOSHITO
Publication year - 1995
Publication title -
journal of gastroenterology and hepatology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.214
H-Index - 130
eISSN - 1440-1746
pISSN - 0815-9319
DOI - 10.1111/j.1440-1746.1995.tb01794.x
Subject(s) - thioacetamide , laminin , sinusoid , von willebrand factor , perisinusoidal space , cirrhosis , basement membrane , basal lamina , pathology , medicine , endothelial stem cell , immunohistochemistry , endocrinology , extracellular matrix , chemistry , hepatocyte , biochemistry , ultrastructure , in vitro , platelet
We characterized the structural changes of sinusoidal endothelial cells in chronic ethanolfed rats and rats with cirrhosis induced by thioacetamide. The phenotypic changes of sinusoidal endothelial cells in fibrotic rats induced by thioacetamide and the reversibility of these changes were also investigated under transmission and scanning electron microscopy, regular microscopy and by immunohistochemistry with laminin and von Willebrand factor antibodies. The diameter and porosity of sinusoidal endothelial fenestrations were increased in chronic ethanol‐fed rats without liver fibrosis, however, they decreased within 4 weeks of the cessation of thioacetamide treatment. A basement membrane‐like structure in Disse's space was noted 6 weeks after thioacetamide treatment. Laminin was detected in Disse's space after 4 weeks and von Willebrand factor was detected in the cytoplasm as granular fluorescence after 6 weeks of thioacetamide treatment. Reversibility of the phenotypic changes of the sinusoidal endothelial cells was demonstrated in fibrotic liver of rats that received thioacetamide for 6 weeks after long‐term discontinuation of thioacetamide administration. These results indicate that the structural and immunohistochemical characteristics of sinusoidal endothelial cells change in chronic ethanol‐fed rats and fibrotic rats and these changes are reversible.