Digestion

Original Paper

Stimulated Synthesis of Glycosaminoglycans in Suspension Cultures of Hepatocytes from Subacutely Injured Livers

Gressner A.M. · Grouls P.

Author affiliations

Department of Clinical Chemistry and Pathobiochemistry Medical Faculty, Technical University (RWTH), Aachen, FRG

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Digestion 1982;23:259–264

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Article / Publication Details

First-Page Preview
Abstract of Original Paper

Received: August 11, 1981
Published online: January 28, 2009
Issue release date: 1982

Number of Print Pages: 6
Number of Figures: 0
Number of Tables: 0

ISSN: 0012-2823 (Print)
eISSN: 1421-9867 (Online)

For additional information: https://www.karger.com/DIG

Abstract

Parenchymal and nonparenchymal cells were isolated from normal and thioacetamide-injured rat livers, respectively. The cells were incubated in suspension cultures in the presence of [35S]-sulfate to study the synthesis of total and specific types of glycosaminoglycans. It is found that the production of total labeled glycosaminoglycans is stimulated about threefold in hepatocytes from liver injured for 2 days with a single intraperitoneal dose of thioacetamide (100 mg/kg b.w.) if compared to respective control cell incubations. Hepatocytes from rats injured for 2 months with thioacetamide also produced significantly more glycosaminoglycans than normal ones. In earlier stages of injury, i.e. 3 h after application of the drug, total glycosaminoglycan synthesis is depressed by about 40 %.The pattern of glycosaminoglycans synthesized by hepatocytes from preinjured livers is changed in comparison to that of normal cells. The portion of HNO2-susceptible glycosaminoglycans (heparan sulfate) decreases whereas that of chondroitin ABC-lyase digestible material (chondroitin sulfate, dermatan sulfate) increases. Thus, synthesis and secretion of the latter types of glycosaminoglycans in suspension cultures of hepatocytes from subacutely injured livers are about 3-fold elevated. This fact indicates the possible fibrogenic potency of hepatocytes. Nonparenchymal cell incubations from normal and injured livers, respectively, were unable to incorporate any significant amount of [35S]-sulfate into glycosaminoglycans.

© 1982 S. Karger AG, Basel




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Article / Publication Details

First-Page Preview
Abstract of Original Paper

Received: August 11, 1981
Published online: January 28, 2009
Issue release date: 1982

Number of Print Pages: 6
Number of Figures: 0
Number of Tables: 0

ISSN: 0012-2823 (Print)
eISSN: 1421-9867 (Online)

For additional information: https://www.karger.com/DIG


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