Cytokine expression and cytokine-based T-cell profiling in occupational medicamentosa-like dermatitis due to trichloroethylene

Toxicology Letters
Yang XueqinZhuang Zhixiong

Abstract

Early diagnosis and treatment of occupational medicamentosa-like dermatitis due to trichloroethylene (OMLDT) are absence of specific and reliable diagnostic/therapeutic biomarkers. This study was conducted on 30 cases of OMLDT, 58 workers exposed to trichloroethylene (TCE) and 40 unexposed controls in order to identify any cytokine signatures that give an index to CD4+T cell differential and serve as biomarkers of OMLDT. Expression profiles of Th1, Th2, Th17and Treg cell type-specifying transcription factors and cytokines were analyzed using real time quantitative PCR (RT-qPCR) assay. To explore whether such expression profiles reflected their steady state plasma levels, a Luminex liquid fluorescence analysis was conducted. We found that the expression of transcription factors FoxP3 transcription factors (P = 0.006 and P < 0.0001) and IL-10 cytokine (P = 0.0008 and P < 0.0001) of the Treg subset were significantly higher in patients than TCE exposure workers and unexposed controls, suggesting that Treg cells were active after the occurrence of OMLDT. The transcript levels of IL-6 were significantly lower in the TCE exposure groups including patients and exposure workers as compared to the unexposed controls (P < 0.0001 and P = ...Continue Reading

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