RESUMO
Objective:To study the effect of NF-?B and its inhibitor in rats liver during the development of non-alcoholic steato-hepatitis and observe the effect of total flavonoids of Chinese hawthorn leaf on expressions of NF-?B and its inhibitor,and explore the prevention and treatment mechanism of non-alcoholic steato-hepatitis. Methods:Non-alcoholic steato-hepatitis SD rats model were established by administering a high-fat diet for 12 weeks and were treated with total flavonoids of Chinese hawthorn leaf at dosages of 250mg/kg body weight /d,125 mg/kg body weight /d and with Essentiale at a dosage of 195.4mg /kg body weight /d. Pathological changes of liver tissues were observed with HE,the serum MDA,SOD and TNF-? were measured,the protein and mRNA expressions of NF-?B and I?B in rats liver were detected with RT-PCR and immunohistochemical method. Results:There were severe steatosis inflammatory cell infiltration and necrotic foci in non-alcoholic steato-hepatitis rat. Compared with the control group,contents of the serum MDA and TNF-? in non-alcoholic steato-hepatitis group obviously increased,the activity of SOD decreased,the mRNA and protein expressions of NF-?B P65 and I?B? in liver obviously strengthened. There was a positive relativity of the protein expression of NF-?B p65,I?B? with the contents of serum TNF-?,MDA,but a negative relativity with the activity of serum SOD. Conclusion:Total flavonoids of Chinese hawthorn leaf can obviously lower lipid peroxidation in rats,lower the harm of cytokine to hepatocytes,and regulate the expression of protein and mRNA of NF-?B and I?B. It maybe the important mechanism of total flavonoids of Chinese hawthorn leaf for preventing and treating the development of non-alcoholic steato-hepatitis.
RESUMO
Objective To investigate the preventive mechanism of Anisodamine (654-2) on multiple organ dysfunction syndrome (MODS) of rabbits. Methods Rabbit model of MODS induced by hemorrhagic shock and endotoxin was used in this study. Twenty-four rabbits were randomly divided into the control group (C group) , hemorrhagic shock plus endotoxin group (M group) and 654-2 treatment group (T group). The expression of IKK-? of pulmonary alveolar macrophage (PAM) and kuffer cell(KC), the NF-?B activity of nuclear protein extracted from PAM and KC and the concentration of tumor necrosis factor-? (TNF-?) in the culture supernatant were measured by in situ hybridization (ISH), electrophoretic mobility shift assay (EMSA) and enzyme linked immune absorbent analysis(ELISA), respectively. Then the blood air, biochemical and pathological changes in visceral organs were examined in each groups. Results In PAM and KC of M group, The expression of IKK-? mRNA [(0 15?0 03);(0 17?0 04)], the activity of NF-?B [(1 49?0 30);(1 72?0 36)] and the secretion level of TNF-? [( 279 74?25 91);(300 05?30 86)ng/L] were significantly higher than those of control group (P