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Eriksson, C. et al.

Abnormal expression of chemokine receptors on T-cells from patients with systemic lupus erythematosus.

The expression of chemokine receptors on T-cells and chemokine levels in the blood was studied in 23 patients with SLE ( ACR criteria), seven patients with rheumatoid arthritis (RA) and in 15 healthy controls using flow cytometry, RT-PCR and ELISA. The cell surface expression of the chemokine receptors CXCR5 and CCR6 was decreased in SLE patients compared with controls (P = 0.051 and P = 0.002, respectively). The decrease of CXCR5 was confined to SLE patients with inactive disease (SLEDAI < 6) compared with active disease (SLEDAI > 6) and controls. CXCR2 and CCR1 were increased in patients with active SLE compared with patients with inactive disease (P = 0.001 and P = 0.01, respectively) and with controls (P = 0.02 and P = 0.053, respectively). The levels of the chemokines MIP-1alpha MCP-1, SDF-1alpha, IP-10 and RANTES were significantly elevated in SLE patients compared with controls. Patients with renal involvement had increased surface expression of CXCR3 and CCR3 (P = 0.04 in both) and a lower level of soluble IP-10 compared with patients without renal disease (P = 0.025) and compared with controls (P = 0.001). The ratio between CCR5 and CCR3 was significantly increased in RA patients compared with SLE patients and controls supporting a Th1 overweight in RA. In conclusion, patients with SLE showed abnormal T-cell expression of several chemokine receptors and levels of soluble chemokines in their plasma/serum.[1]

References

Abnormal expression of chemokine receptors on T-cells from patients with systemic lupus erythematosus. Eriksson, C., Eneslätt, K., Ivanoff, J., Rantapää-Dahlqvist, S., Sundqvist, K.G. Lupus (2003) [Pubmed]

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