Abstract：
:Flucloxacillin is a semi-synthetic penicillin widely used in the prophylaxis and treatment of staphylococcal infections. Severe liver reactions, characterised by delayed cholestatic hepatitis and a prolonged course of recovery, are associated with flucloxacillin therapy. Clinical findings are suggestive of an immune mediated reaction but there exists little supporting experimental evidence. The formation of drug modified hepatic protein adducts has been proposed to play an important role in the hepatotoxicity of many drugs. The aim of the present study was to investigate whether flucloxacillin treatment results in adduct formation in vivo. Flucloxacillin was conjugated to rabbit serum albumin by formation of a penicilloyl determinant and used as an immunogen to raise a polyclonal antiserum specific for flucloxacillin-modified proteins. Antibody specificity was confirmed by competitive enzyme-linked immunosorbent assay (ELISA) with free drug. The antiserum was used in combination with western blotting to detect adduct formation in the livers of flucloxacillin treated rats. Western blot analysis of rat liver subcellular fractions revealed the formation of six flucloxacillin adducts in various subcellular fractions. These studies demonstrate for the first time that treatment with flucloxacillin results in the formation of hepatic protein adducts.
journal_name
Toxicologyjournal_title
Toxicologyauthors
Carey MA,van Pelt FNdoi
10.1016/j.tox.2005.07.015keywords:
subject
Has Abstractpub_date
2005-12-01 00:00:00pages
41-8issue
1eissn
0300-483Xissn
1879-3185pii
S0300-483X(05)00342-2journal_volume
216pub_type
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