[The DNA binding activity of nuclear factor-ΚB in patients with severe pneumonia and the intervention effects of Xuebijing injection].

OBJECTIVE: To investigate the role of nuclear factor-ΚB (NF-ΚB) in severe pneumonia and observe the effects of Xuebijing injection in its treatment.

METHODS: Thirty hospitalized patients with severe pneumonia were divided into the routine therapy group (n=14) and Xuebijing therapy group (n=16) in whom with Xuebijing injection 100 ml was given once daily for 7 days besides routine therapies, according to the random numeral. The DNA binding activity of NF-ΚB in human monocytes was detected before and 3 days and 7 days after administration, the contents of tumor necrosis factor-α (TNF-α), procalcitonin (PCT) and C-reactive protein (CRP) were determined, and the changes in coagulatory and fibrinolytic parameters were assayed at the same time. Acute physiology and chronic health evaluationII (APACHEII) score was also recorded. Ten healthy volunteers served as the healthy control group.

RESULTS: The DNA binding activities of NF-ΚB, the contents of TNF-α, PCT, CRP, fibrinogen (Fib), D-dimer in hospitalized subjects with severe pneumonia were higher before treatment than those in healthy control group, while the prothrombin time (PT), thrombin time (TT) were significantly lower (P<0.05 or P<0.01). Compared with the routine therapy group, the DNA binding activity of NF-ΚB (grey level) at the 7 days (66.60±36.23 vs. 79.90±39.11) was notably decreased in Xuebijing therapy group; the levels of TNF-α (ng/L, 25.81±11.67 vs. 33.78±13.36), PCT (μg/L, 1.91±1.09 vs. 2.96±1.80), CRP (mg/L, 20.01±7.21 vs. 26.59±10.66), Fib (g/L, 4.02±1.26 vs. 5.09±1.43), D-dimer (mg/L, 0.24±0.06 vs. 0.31±0.11) were significantly lower in Xuebijing therapy group, and APACHEII score (15.81±3.47 vs. 17.93±3.05) was obviously lowered (all P<0.05). There was statistical difference of the TT (s) between two groups at 3 days (15.68±1.89 vs. 14.65±1.33,P<0.05). There was a significant positive correlation between NF-ΚB DNA binding activity and the levels of TNF-α (r(1)=0.373, r(2)=0.362, r(3)=0.419), PCT (r (1)=0.800, r(2)=0.716, r(3)=0.920) or CRP (r(1)=0.368, r(2)=0.441, r(3)=0.366, all P<0.05) before and 3 days and 7 days after the treatment.

CONCLUSION: NF-ΚB activation and coagulopathy were observed in patients with severe pneumonia, and NF-ΚB was involved in the process of inflammatory response. Inflammatory response was partly alleviated by Xuebijing injection. These effects of Xuebijing injection may be mediated by inhibition of the activation of NF-ΚB and its anticoagulation property.