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. 1984 Aug;116(2):262–269.

Serum gamma glutamyl transferase as a specific indicator of bile duct lesions in the rat liver.

T B Leonard, D A Neptun, J A Popp
PMCID: PMC1900544  PMID: 6147091

Abstract

Serum gamma-glutamyl transferase (GGT), a marker of hepatic injury used extensively in humans, has been used rarely in rats because its specificity has not been previously defined. Studies were designed for investigation of the specificity of serum GGT activity with the use of cell type specific hepatotoxicants in Fischer 344 rats. Single necrogenic doses of CCl4, allyl alcohol (AA), and alpha-naphthylisothiocyanate (ANIT) were used to produce cell specific injury in centrilobular hepatocytes, periportal hepatocytes, and bile duct cells, respectively. Administration of CCl4 markedly increased serum activities of alanine aminotransferase (ALT), alkaline phosphatase (AP), and serum bile acid concentrations within 24 hours but had no effect on serum GGT activity. ANIT treatment increased serum GGT and AP activities and bile acid concentration 24 hours following administration. Allyl alcohol administration increased serum ALT activity but had no effect on GGT activity. Administration of ANIT in the diet at 0.01%, 0.022%, 0.047%, and 0.1% for 2, 4, and 6 weeks produced dose- and time-dependent increases in serum GGT activity which strongly correlated with quantitative increases in hepatic bile duct volume, which was determined morphometrically. These observations support the use of serum GGT activity in the rat as diagnostic of bile duct cell necrosis when increases are detected shortly after the insult and as an indicator of possible bile duct hyperplasia.

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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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