Characterization of chemokine receptor expression and cytokine production in circulating CD4+ T cells from patients with atopic dermatitis: up-regulation of C-C chemokine receptor 4 in atopic dermatitis
Article first published online: 19 AUG 2002
Clinical & Experimental Allergy
Volume 32, Issue 8, pages 1236–1242, August 2002
How to Cite
Okazaki, H., Kakurai, M., Hirata, D., Sato, H., Kamimura, T., Onai, N., Matsushima, K., Nakagawa, H., Kano, S. and Minota, S. (2002), Characterization of chemokine receptor expression and cytokine production in circulating CD4+ T cells from patients with atopic dermatitis: up-regulation of C-C chemokine receptor 4 in atopic dermatitis. Clinical & Experimental Allergy, 32: 1236–1242. doi: 10.1046/j.1365-2745.2002.01383.x
- Issue published online: 19 AUG 2002
- Article first published online: 19 AUG 2002
- Submitted 29 June 2001; revised 23 September 2001; accepted 31 December 2001
- atopic dermatitis;
Background Th2 and Th1 cells have been suggested to express CCR3/CCR4 and CCR5/CXCR3, respectively.
Objective We examined CCR3, CCR4, CCR5 and CXCR3 expression and cytokine production in peripheral blood CD4+ T cells from patients with atopic dermatitis (AD), which has been postulated to be a Th2-type cell-mediated disease, and then analysed the possible correlation between these values and the levels of several clinical parameters.
Methods Intracellular cytokine production and chemokine receptor expression in peripheral blood CD4+ T cells from 40 AD patients and 20 sex- and age-matched healthy control subjects were studied by flow cytometry.
Results The frequencies of IL-4- and IL-13-producing CD4+ T cells from patients with AD were significantly higher than those from healthy control subjects (IL-4:3.9 ± 2.1% vs. 1.6 ± 0.7%, P = 0.0005, IL-13:4.0 ± 2.1% vs. 1.8 ± 0.8%, P = 0.0023), whereas the frequencies of IL-2- and IFN-γ-producing CD4+ T cells were significantly decreased in AD patients (IL-2:38.1 ± 10.3% vs. 51.3 ± 6.3%, P = 0.0003, IFN-γ: 9.9 ± 3.5% vs. 26.4 ± 4.6%, P < 0.0001). The percentage of CCR4+ cells in CD4+ CD45RO+ T cells in AD patients was significantly higher than that in healthy control subjects (24.4 ± 8.0% vs. 10.9 ± 2.3%, P < 0.0001) and was correlated positively with the total serum IgE, serum lactic dehydrogenase (LDH) level, eosinophil number, eruption score, and IL-4 and IL-13 secretion in CD4+ T cells, and inversely with IL-2 and IFN-γ secretion in CD4+ T cells. In contrast, CCR3 was not detected on circulating CD4+ T cells even in AD patients. On the other hand, the percentage of CCR5+ or CXCR3+ cells in CD4+ CD45RO+ T cells in AD patients was significantly decreased (CCR5:23.2 ± 7.0% vs. 28.4 ± 5.4%, P = 0.023, CXCR3:29.9 ± 11.4% vs. 38.5 ± 6.7%, P = 0.028) and was positively correlated with eruption score (P < 0.05). Multiple regression analyses showed that the percentage of CCR4 expression highly correlated with serum IgE, LDH, eosinophil number and eruption in AD patients.
Conclusion CCR4+ cells might be involved in the aetiopathogenesis of AD.