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  • Title: [Changes of Toll-like receptor (TLR) 2 and TLR4 on the peripheral blood mononuclear cells in patients with chronic hepatitis B and chronic severe hepatitis B].
    Author: Wei XQ, Wen ZF, Zheng FP, Yao JL.
    Journal: Zhonghua Gan Zang Bing Za Zhi; 2007 May; 15(5):354-7. PubMed ID: 17524268.
    Abstract:
    OBJECTIVE: To study the changes of TLR2 and TLR4 on peripheral blood mononuclear cells (PBMCs) and their role in the pathogenesis of chronic hepatitis B and chronic severe hepatitis B. METHODS: The expressions of TLR2 and TLR4 on 10000 CD14+ PBMCs were determined by flow cytometry in 30 healthy controls, in 31 patients with chronic hepatitis B and in 30 patients with chronic severe hepatitis B. The level of serum tumor necrosis factor alpha (TNF alpha) was determined by ELISA. The differences of expression of TLR2 and TLR4 on PBMCs and serum TNFalpha among the three groups of study subjects were determined by Student-t test. The correlations between TLR2, TLR4 and TNF alpha were determined by linear correlation test. RESULTS: The values of mean fluorescence intensity (MFI) of TLR2 on PBMCs of the healthy controls, patients with chronic hepatitis B and patients with chronic severe hepatitis B groups were 21.5+/-2.7, 39.0+/-4.1, and 47.7+/-21.4; TLR4 of those groups was 2.3+/-1.1, 3.7+/-2.3, and 6.9+/-4.1. The serum TNF alpha(ng/L) of the respective groups was 53.8+/-38.1, 164.3+/-89.9, and 359.8+/-140.0. There was a gradual increase of these values from the group of healthy controls to the group of patients with chronic hepatitis B and patients with chronic severe hepatitis B. No significant positive correlations between TLR2, TLR4 and serum TNFalpha were found. CONCLUSION: TLR2 and TLR4 may have a role in the pathogenesis of chronic hepatitis B and chronic severe hepatitis B.
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