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Clinical Chemistry 41: 1882-1887, 1995;
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Clinical Chemistry, Vol 41, 1882-1887, Copyright © 1995 by American Association for Clinical Chemistry

Manifestations of chemically induced liver damage

AM Batt and L Ferrari
Centre du Medicament, URA CNRS 597, Faculte des Sciences Pharmaceutiques, Universite Henri Poincare, Nancy, France.

Possible liver damage induced by chemicals or drugs must be detected early during drug development or industrial exposure, although damage is still difficult to predict, especially when immunotoxicity is involved. Liver toxicity may result from cytolysis, steatosis, cholestasis, phospholipidosis, or vascular lesions, most the outcome of a disadvantageous balance between chemicals or metabolites vs protective mechanisms, resulting from chemical dosage, genetic factors, or the immunoallergic status of the patient. Drug metabolism, lipid peroxidation, and thiol oxidation are frequently involved in liver toxicities. Classical guidelines in toxicology propose many methods for liver toxicity assessment: histology; chemical changes in hepatic tissue (lipids, glutathione, enzymes); physiological changes in biosynthesis (proteins, glycoproteins); excretion function (fructose); drug metabolism; and concentrations of related enzymes (alanine aminotransferase, aspartate aminotransferase, alkaline phosphatase, and gamma-glutamyltransferase) in blood. In vitro studies in human or animal hepatocytes or tumor-derived cell lines are useful in detecting hepatocellular lesions by cell viability, glutathione concentration, amount of lactate dehydrogenase released, cellular ATP, morphology (blebs), and drug metabolism.


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