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Experience with immunological tests in drug-induced hepatitis
Zeitschrift Fur Gastroenterologie
|November 1, 1981
Summary
Drug-induced liver injury can manifest as an allergic reaction. Immune mechanisms are implicated in hepatic injury caused by therapeutic agents like quinidine and procainamide.
Area of Science:
- Hepatology
- Clinical Pharmacology
- Immunology
Background:
- Drug-induced liver injury (DILI) is a significant clinical concern.
- Allergic reactions are a potential mechanism for DILI.
- Identifying specific drugs and immune pathways involved in DILI is crucial.
Purpose of the Study:
- To report cases of hepatic injury potentially caused by therapeutic agents.
- To investigate the role of allergic and immunologic mechanisms in drug-induced hepatic disease.
Main Methods:
- Case series reporting nine patients with hepatic injury.
- Clinical assessment for allergic processes.
- Rechallenge in three patients to confirm drug causality.
- In vitro immunologic testing to detect immune responses.
Main Results:
- Nine patients developed hepatic injury linked to specific drugs: prajmalium bitartrate (4), quinidine (3), procainamide (1), and nifedipine (1).
- Clinical presentation suggested an allergic process in all patients.
- Three patients showed a positive response upon reexposure to the suspected drug.
- In vitro tests detected immunologic processes, supporting immune involvement.
Conclusions:
- Hepatic injury following administration of certain therapeutic agents can be attributed to an allergic process.
- Immune mechanisms are likely involved in the pathogenesis of drug-induced hepatic disease.
- These findings underscore the importance of considering immune-mediated reactions in DILI.