CD69 upregulation on T cells as an in vitro marker for delayed-type drug hypersensitivity

Beeler, A; Zaccaria, L; Kawabata, T; Gerber, B O; Pichler, W J (2008). CD69 upregulation on T cells as an in vitro marker for delayed-type drug hypersensitivity. Allergy, 63(2), pp. 181-8. Oxford: Wiley-Blackwell 10.1111/j.1398-9995.2007.01516.x

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BACKGROUND: T cells play a key role in delayed-type drug hypersensitivity reactions. Their reactivity can be assessed by their proliferation in response to the drug in the lymphocyte transformation test (LTT). However, the LTT imposes limitations in terms of practicability, and an alternative method that is easier to implement than the LTT would be desirable. METHODS: Four months to 12 years after acute drug hypersensitivity reactions, CD69 upregulation on T cells of 15 patients and five healthy controls was analyzed by flow cytometry. RESULTS: All 15 LTT-positive patients showed a significant increase of CD69 expression on T cells after 48 h of drug-stimulation exclusively with the drugs incriminated in drug-hypersensitivities. A stimulation index of 2 as cut-off value allowed discrimination between nonreactive and reactive T cells in LTT and CD69 upregulation. T cells (0.5-3%) showed CD69 up-regulation. The reactive cell population consisted of a minority of truly drug reactive T cells secreting cytokines and a higher number of bystander T cells activated by IL-2 and possibly other cytokines. CONCLUSIONS: CD69 upregulation was observed after 2 days in all patients with a positive LTT after 6 days, thus appearing to be a promising tool to identify drug-reactive T cells in the peripheral blood of patients with drug-hypersensitivity reactions.

Item Type:	Journal Article (Original Article)
Division/Institute:	04 Faculty of Medicine > Department of Dermatology, Urology, Rheumatology, Nephrology, Osteoporosis (DURN) > Clinic of Rheumatology, Clinical Immunology and Allergology > Allergology [discontinued] 04 Faculty of Medicine > Department of Dermatology, Urology, Rheumatology, Nephrology, Osteoporosis (DURN) > Clinic of Rheumatology, Clinical Immunology and Allergology
UniBE Contributor:	Beeler, Andreas, Gerber, Basil Oliver, Pichler, Werner Joseph
ISSN:	0105-4538
ISBN:	18005225
Publisher:	Wiley-Blackwell
Language:	English
Submitter:	Factscience Import
Date Deposited:	04 Oct 2013 15:04
Last Modified:	05 Dec 2022 14:19
Publisher DOI:	10.1111/j.1398-9995.2007.01516.x
PubMed ID:	18005225
Web of Science ID:	000252119400006
URI:	https://boris.unibe.ch/id/eprint/27647 (FactScience: 109791)