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Biochem Biophys Res Commun. 1988 Feb 29;151(1):222-9.

Hyaluronic acid synthesis and secretion by rat liver fat storing cells (perisinusoidal lipocytes) in culture.

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Department of Clinical Chemistry, Phillipps-University, Marburg, FRG.


The ability of rat liver fat storing cells to synthesize and to secrete hyaluronic acid was examined in monolayer cultures. The cells produce [3H] glucosamine-labeled hyaluronic acid, of which about 80% are secreted into the medium. The synthesis rate per cell (mg DNA) of labeled total glycosaminoglycans and hyaluronic acid in the medium increases significantly with culture time, but hyaluronic acid expressed as fraction of total glycosaminoglycans declines from about 0.70 in early cultures (up to the 4th day) down to 0.20 in advanced cultures. Cycloheximide increases and beta-D-xylopyranoside decreases significantly the fraction of hyaluronic acid in the medium, colchicine up to 5 microM was without effect. The synthesis of hyaluronic acid is a newly recognized function of this special type of sinusoidal liver cells. The results suggest that fat storing cells are likely to be a major source of hyaluronic acid in normal and probably also in injured liver.

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