The protective function of five traditional herb medicines, namely anisodamine,escin,salvia miltiorrhizae radix,astragalus root and ecdysterone, in cultured HUVECs challenged by LPS. ATP,ADP,AMP and energy charge were measured in cultured HUVECs challenged by LPS after treatment with five herb medicines. The results showed that energy charge of HUVECs decreased after LPS challenge,and increased significiantly more afer the addition of escin,radix astragali and ecdysterone than other herbs.It suggested that escin, astragalus and ecdysterone can protect HUVECs from injury induced by LPS.

An immunogenic peptide sequence of B cell dominant epitope of human Toll like receptor 4 (TLR4) was selected basing on predication of B cell epitope of TLR4.bALB/c mice were immunized with synthetic peptide of TLR 4 and one clone (B4) of hybridoma cells was picked out by ELISA and limited dilution. High titer McAb prepasations against TLR 4 were obtained from ascites fluid of BALB/c mice infravenously inoculated with the McAb inducing hybridoma cells.The titer of ascites fluid was 1∶ 100 000 .The subclass of the McAb was IgG2,k.The specificity of McAb was identified. by indirect ELISA,and a single strong blot was shown in molecular weights of 90 Kd.using Western blot analysis.