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To do this, we examined the PA and NA groups to see which subset had the predominant response (Fig.?3). Within the PA population, the CLA+ response was dominant (P?=?0.02), whilst there was no significant difference between the subsets of the NA population (P?=?0.88). We then compared the CLA+ subset responses between PA and NA groups. Here, the predominance of the CLA+ response in the PA population was also significant (P?=?0.049). These results suggest an association between PA and cutaneous sensitization, indicated by proliferation predominating http://www.selleckchem.com/products/LY294002.html in the skin-homing CLA+ subset of memory T cells. These differences were primarily driven by proliferation in the CLA+ subset of the PA population, whilst http://www.selleck.cn/products/wortmannin.html a balanced response was observed between the subsets of the NA population. Relative stimulation index to control OVA antigen was balanced in both T-cell subsets in egg-tolerant PA and NA individuals (P?=?0.50, medians?=?1.46 and 1.02, respectively, Fig.?2). This was also reflected in the absolute count (cpm values) ratio in PA and NA individuals (P?=?0.55, medians?=?1.56 and 1.47, respectively). The balanced CLA/��4��7 response in PA and NA individuals for OVA implies that the differential proliferation in the CLA+ compartment in the PA population is specific for the allergen to which the child is allergic (i.e. peanut). More PA individuals in our group had eczema (eight PA vs four NA). More T cells circulating through the inflamed skin could theoretically lead to greater CLA responses from participants with eczema, accounting for the responses in PA individuals. However, a one-way anova showed that regardless of allergic status, eczema alone did not influence the result (P?=?0.93). Production of the cytokines IFN�� (by Th1 cells), TNF�� (Th0/Th1 cells), IL4 (Th2 cells) and IL13 (Th0/Th2 cells) was analysed individually and as Th1/Th2 ratios for both subsets of PA and NA groups, as previously demonstrated http://www.selleckchem.com/products/CHIR-99021.html [31]. Evaluation of individual cytokines (Fig.?4) demonstrated statistically significant interactions for the Th1 cytokine, IFN�� (P?=?0.015), which was higher in the ��4��7 subset of the NA group than in any other group. In contrast, IL13 (Th2) showed a trend towards being higher in the CLA+ subset of both PA and NA individuals (P?=?0.05). Figure?4 shows that IL13 production is higher in the CLA+ subset of the PA population than in that of the NA population. There were no significant differences in IL4, IL10, TGF�� or FoxP3 production. We observed significant trends for IFN��/IL13 [P?
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