PubMed · 10179478
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L J Johnson. 1998-04-27. Avoiding lawsuits for careless prescribing errors.. https://pubmed.ncbi.nlm.nih.gov/10179478/
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In recent years, increasing evidence has indicated an important role for T cells in various drug-induced diseases. A detailed analysis of patients with various drug allergies revealed the existence of drug-specific T cells in the circulation or in eluate from skin infiltration in bullous, pustular, and maculopapular drug eruptions. The drug-specific T cells use the ab-T cell receptor CD4+ or CD8+ and react with drugs acting as haptens (covalently bound to larger molecules, such as penicillins), but also recognize drugs if they are bound only in a labile way to major histocompatibility complex molecules (noncovalent drug presentation). Functional analysis revealed a predominant IL-5 production by drug-specific CD4+ T cells in maculopapular exanthema (MPE) and bullous skin diseases, while patients with acute generalized exanthematous pustulosis have a peculiar T cell subset secreting high amounts of IL-8. Moreover, in MPE CD4+, perforin+ T cells were found in vitro and in immunohistology that had cytotoxic potential and killed keratinocytes in vitro and in vivo.
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