Objective To research on reversal mechanism of active ingredients of Sanhuang Xiexin Decoction on lipopolysaccharide-induced acute kidney injury.Methods C57BL/6 mice were randomly divided into 6 groups: control group, LPS group, rhein group, berberine group, baicalin group and dexamethasone group.8 mice in each group.Control group were injected intraperitoneally with 0.9%NaCl 0.5 mL, and the remaining groups were injected intraperitoneally with LPS 0.1 mL/g.The mice of rhein group, berberine group, baicalin group and dexamethasone group were respectively injected intraperitoneally rhein, berberine, baicalin ( 0.1 mL/g ) and dexamethasone ( 0.0001 mL/g ) 2 h before LPS injection.One day after LPS treatment, mice were decapitated and blood collected, diagnostic kits and automatic biochemical analyzer were used to detected urea nitrogen and creatinine.TNF-αand IL-6 concentrations in serum were detected by ELISA kit.HE staining and immunohistochemistry were performed in the kidney tissues.expression of apoptosis protein detected by Western blot.ResuIts Compared to control group, the blood urea nitrogen, serum creatnine, TNF-αand IL-6 level were significantly lower ( P<0.05 ) .HE staining found the renal tubular epithelial cell which treated with LPS were swelling, degeneration, loss, narrow lumen and tube type and exudate, renal interstitial edema, inflammatory cells infiltration.And symptoms of the other group were significantly slight.Immunohistochemical results showed that the expression of Bax and Caspase3 in LPS group was obviously increased, while the expression of the others group was decreased, neither did Bcl-2.Western blot results showed that apoptosis proteins Bax, Cleave-caspase3, CytoC expression increased of LPS group, while the other groups were lower than LPS group.But Bcl-2 expression reduced in LPS group and increased in others group.ConcIusion The effective constituent of Sanhuang Xiexin Decoction can reversal of LPS induced acute kidney injury and its mechanism of action is similar to that of dexamethason.

Objective To investigate the effect of umbilical cord blood dendritic cells(DCs)induced by gastric cancer antigen combined with cytokine induced killer(CIK)cells in gastric cancer cell lines SGC-7901 in vitro. Methods Mononuclear cells from umbilical cord blood were used to create DCs and CIKs. The cell surface antigen expression of the mature DCs such as CD83,CD86,CD11c and the cell surface antigen of CIKs such as CD3,CD56,CD4,CD8,CD16 were detected using flow cytometry. Sensitized DCs-CIKs,DCs-CIKs,CIKs as effective cells,and SGC-7901 as target cells,the killing activities of these effective cells were tested with LDH release,which the number ratio of cells between effective cells and SGC-7901 cells were 10 :1,20 : 1,40 : 1,respectively. Results The cell surface antigen expressions of the mature DCs,such as CD83 + CD86 + ,CD11c + CD83 + ,CD86 + CD11c + were(75. 4 ± 2. 1)% ,(79. 3 ± 1. 4)% ,(80. 2 ± 2. 6)% , respectively. The mature sensitive-DCs surface antigen expressions,such as CD83 + CD86 + ,CD11c + CD83 + , CD86 + CD11c + ,were(77. 7 ± 1. 5)% ,(82. 6 ± 1. 9)% ,(76. 9 ± 2. 6)% ,respectively. There was no sta-tistical significance about the surface antigen expression between DCs and sensitive-DCs(t = 1. 526,P ﹥ 0. 05;t = 0. 958,P ﹥ 0. 05;t = 1. 049,P ﹥ 0. 05). The CIKs surface antigen expressions,such as CD4 + ,CD8 + , CD3 + CD56 + CD16 + ,were(22. 8 ± 1. 3)% ,(77. 3 ± 1. 8)% ,(24. 5 ± 2. 1)% ,respectively. The results suggested that the killing effect of the three kinds of combination cells on gastric cancer cells was different. The number ratio of cells between sensitive-DCs and SGC-7901 cells were 10 : 1,20 : 1,40 : 1,which the killing activities of sensitive-DCs-CIKs against SGC-7901 were(37. 68 ± 1. 49)% ,(41. 67 ± 0. 90)% ,(42. 71 ± 0. 98)% ,respectively. The killing activity of sensitive-DCs-CIKs was the highest when the ratio of cells between sensitive-DCs and SGC-7901 cells were 40 : 1. The killing activities of DC-CIKs were(36. 77 ± 0. 46)% ,(38. 94 ± 0. 95)% ,(41. 15 ± 0. 89)% ,respectively. The killing activities of CIKs were(34. 74 ± 1. 01)% ,(37. 76 ± 0. 43)% ,(39. 65 ± 0. 79)% ,respectively. There were statistically significant differences among the three groups(F = 5. 92,P ﹤ 0. 05;F = 19. 13,P ﹤ 0. 05;F = 8. 88,P ﹤ 0. 05). Conclusion The tumor killing activity of CIK is enhanced obviously by umbilical cord blood DCs which is sensitized by gastric cancer tumor antigen. There is the highest killing activity when the number ratio of cells between sensitive-DC-CIK and SGC-7901 cells is 40 : 1.

Objective To observe the effects of high mechanical index ultrasound contrast on hepatic metastasis of colorectal cancer. Methods Hepatic metastasis models were established by injecting Lovo cells into the spleen of SD rats.This study was divided into control group, microbubble plus ultrasound radiation group simple contrast agent group and simple ultrasound radiation group.Ultrasound contrast agent SonoVue(1 ml/kg) was injected via tail vein, high mechanical index ultrasound contrast (frequency 1.5 MHz,MI 1.7) was performed intermittently for 2 min.After 10 d,the animals were killed and the size and number of hepatic metastasis were compared.Histological pathology and its ultrastructure were observed.Results There were no significant differences between contral group,simple ultrasound radiation group and simple contrast agent group in metastatic rate ( P＞0.05).There were no obvious differences between contral group, simple ultrasound radiation group and simple contrast agent group in cells'ultrastructure by transmission electron microscopy (TEM).The number and size of hepatic metastasis decreased obviously in microbabble plus ultrasound radiation group ( P＜0.01 ), the mitochondrion was swelling and the gaps of endothelial cells were loose. Conclusions High mechanical index ultrasound contrast can inhibit the hepatic metastasis of colorectal cancer.