Chinese Medical Sciences Journal ›› 2010, Vol. 25 ›› Issue (3): 162-168.

• Original Article • Previous Articles     Next Articles

mRNA Expression of Chemokine Receptors on Peripheral Blood Mononuclear Cells and Correlation with Clinical Features in Systemic Lupus Erythematosus Patients

Yu-mei Li1, Zhi-qiang Chen2*, Xu Yao2, Ai-zhen Yang3, An-sheng Li2, Dong-ming Liu4, and Juan-qin Gong2   

  1. 1Department of Dermatology, 4Department of Medical Imaging and Radiology,the Affiliated Hospital of Jiangsu University, Zhenjiang 212001, China 
    2Hospital for Skin Diseases, Chinese Academy of Medical Sciences & Peking Union Medical College, Nanjing 210042, China 
    3Central Lab of People's Liberation Army Cancer Center, the 81st Military Hospital, Nanjing 210002, China
  • Received:2010-04-07 Online:2010-09-20 Published:2010-09-20
  • About author:Tel: 86-511-85036785, Fax: 86-511-85029089
  • Supported by:

    Supported by National Natural Science Foundation of China (30170863 and 30771938) and Natural Science Foundation of Jiangsu Province (BK2001195).

Abstract: Objective To investigate the expressions of chemokine receptors and interleukin (IL) receptors on the peripheral blood mononuclear cells (PBMCs) from systemic lupus erythematosus (SLE) patients and their correlations with clinical features as well as SLE disease activity index (SLEDAI). Methods The mRNA expressions of chemokine receptors and IL receptors on PBMCs of 93 SLE patients and 30 healthy controls were detected by reverse transcription-polymerase chain reaction, including CCR2, CCR3, CCR4, CCR5, CCR6, CCR8, CXCR3, CXCR5, CX3CR1, XCR1, IL-4R, and IL-10R. The clinical features of SLE patients were recorded. The correlations of chemokine receptors and IL receptors mRNA expressions with clinical features as well as SLEDAI were assayed using linear regression analysis. Results The level of CCR5 mRNA in SLE patients (including active and inactive SLE) was significantly higher than that in healthy controls (P<0.05), and there was no significant difference between active and inactive patients in this respect (P>0.05). CX3CR1 mRNA expression significantly increased from healthy control to inactive SLE to active SLE in sequence. The others (except for CCR8, CXCR3, and IL-10R) in active SLE patients were significantly higher than those in both inactive SLE patients and healthy controls (all P<0.05). There were positive correlations between SLEDAI and CCR2 (r=0.424, t=4.313, P<0.001), CCR3 (r=0.518, t=5.410, P<0.001), CCR4 (r=0.376, t=3.851, P<0.001), CCR6 (r=0.457, t=4.513, P<0.001), CXCR5 (r=0.455, t=4.629, P<0.001), CX3CR1 (r=0.445, t=4.523, P<0.001), as well as XCR1 (r=0.540, t=5.445, P<0.001). And CCR5 mRNA expression level was positively correlated with IL-4R mRNA (r=0.313, t=2.353, P<0.05). The patients with myositis and cutaneous vasculitis simultaneously showed lower levels of CCR5 and CX3CR1, and CCR5 expression was negatively correlated with the scores of SLEDAI in SLE cases accompanied by photosensitivity (r=0.426, t=??2.155, P<0.05). Conclusion Increased expressions of CCR5 and CX3CR1 on PBMCs may be indicators in clinical survey for SLE.

Key words: systemic lupus erythematosus, chemokine receptors, peripheral blood mononuclear cell

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