Serum Concentrations of Thelper2-derived Cytokines in Stevens-Johnson Syndrome and Toxic Epidermal Necrolysis

Abstract

BACKGROUND: Stevens-Johnson syndrome (SJS) and toxic epidermal necrolysis (TEN) are severe cutaneous adverse drug reactions. Some immunological and genetic factors are believed to be involved in the pathogenesis of SJS/TEN, including T helper 1 and T helper 2 (Th2)-derived cytokines. AIM: This study aims to evaluate the serum levels of Th2-derived cytokines in SJS/TEN, compare to those of erythema multiforme (EM) patients, and the relation between them and the progress of SJS/TEN. METHODS: This was a sectional descriptive study conducted at the National Hospital of Dermatology and Venereology, in Hanoi, Vietnam, from October 2017 to September 2019. 48 SJS/TEN patients, 43 EM patients, and 20 healthy controls (HCs) participated. Serum interleukin (IL)-4, IL-5, and IL-13 levels were measured by using the fluorescence covalent microbead immunosorbent assay (FCMIA) (ProcartaPlex Immunoassay Panels kit, Thermo Fisher Scientific, USA). The Mann-Whitney U test was used to compare the serum IL levels of the two groups. The Wilcoxon tests were used to compare quantitative variables before and after the treatment. Differences were considered to be statistically significant at p < 0.05. RESULTS: 19 SJS patients (39.5%) and 29 TEN patients (60.5%) participated in our study. The mean age was 49.3, range of 19–77 years (47.9% males; 52.1% females). The most common causative drugs were traditional medicine (29.1%), and allopurinol (12.5%). On the day of hospitalization, the serum level of IL-4 in the SJS/TEN group was 3 ± 7.5 pg/mL, statistically significantly higher than that in the HCs group (p < 0.05), but not higher than that in the EM group (p > 0.05); serum levels of IL-5 and IL-13 in the SJS/TEN group were 4.5 ± 9.8 pg/mL and 1.6 ± 0.6 pg/mL, respectively, similar to those in the EM and HCs groups. On the day of re-epithelialization, in SJS/TEN patients, the serum level of IL-5 was 1 ± 2.8 pg/ml, statistically significantly lower than that on the day of hospitalization (3 ± 7.5 pg/mL) with p < 0.05. Regarding serum levels of IL-4 and IL-13, there was no difference between the two- time points. CONCLUSION: The serum concentrations of Th2-derived cytokines (IL-4, IL-5, and IL-13) were not higher in the SJS/TEN group than in the EM group and there was no significant change in the clinical progression of SJS/TEN, except the serum level of IL-5.