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. 1997 Jul;151(1):169–175.

Lymph vessel expansion and function in the development of hepatic fibrosis and cirrhosis.

B Vollmar 1, B Wolf 1, S Siegmund 1, A D Katsen 1, M D Menger 1
PMCID: PMC1857941  PMID: 9212743

Abstract

The process of lymph vessel expansion and function in the development of CCl4-induced hepatic fibrosis and cirrhosis was studied using intravital fluorescence microscopy of the rat liver. The unique aspect of our approach was the use of high molecular fluorescein-isothiocyanate-labeled dextran (MW, 150,000) as fluorescent marker, which allowed for simultaneous assessment of both 1) the macromolecular blood hepatocytic exchange from the sinusoidal microvasculature (extra-/intrasinusoidal gray level intensity at 1, 3, 5, and 10 minutes after intravenous injection) and 2) the hepatic lymph system. In animals exposed with CCl4 up to 4 weeks, macromolecular trans-sinusoidal exchange was found progressively delayed. This was strongly associated with lymph vessel expansion and function, as indicated by a continuous increase of lymph vessel density and area. Delay of macromolecular exchange and lymph vessel expansion was found not further enhanced at fibrotic and cirrhotic stages of 8- and 12-week CCl4-exposed livers. Linear regression analysis revealed a strong negative correlation between lymphatic network density development and macromolecular trans-sinusoidal exchange (r2 = 0.99; P < 0.01). Thus, our study provides for the first time direct evidence for the pivotal role of lymphatic function for macromolecular transport in case of deteriorated sinusoidal hepatocellular exchange capacity.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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