RESUMO
Objective To investigate the effects of silybin-phosphatidylcholine compound (SPC) on H2O2-induced the production of nitric oxide (NO) and reactive oxygen species (ROS) in mouse macrophage.Methods Macrophage were collected in abdominal cavity of 6-8 week Kunming mouse,and cultured macrophage(2?108 L-1) were divided into control and SPC group randomly.Macrophage in control group were added into the same volume(0.1 mL) of 9 g/L sodium chloride.Macrophage in H2O2 group were added into a single bolus of H2O2 (1 mmol/L H2O2) for 30 min,while macrophage in SPC group were preincubated with different concentration of SPC for 2 h followed by a 30 min incubation with 1 mmol/L H2O2.Immunocytochemistry were used to measure the contents of inducible nitric-oxide synthase(iNOS),NO production was determined by Griess reactive, ROS was determined by DCFH-DA Fluorescence probe.Results The production of NO in H2O2 group markedly higher than that in control group(P
RESUMO
Objective To explore the effects of silybin-phosphatidylcholine compound (SPC )on lipopolysaccharide (LPS)-induced activation of nuclear factor-?B (NF-?B) and phosphorylation and degradation of inhibitors of NF-?B?(I?B?).Methods Phagocyte were collected in abdominal cavity of Kunming mousse aged 6 to 8 weeks,cultured phagocyte(2?105 mL-1) were divided into control, LPS and SPC groups randomly, phagocyte in control group were added into the same volume of 9 g/L sodium chloride.Phagocyte in LPS group were added into a single bolus of LPS(10 ?g/mL LPS) for 24 hours, phagocyte in SPC groups were preincubated with different concentration of SPC for 2 hours followed by a 24 hours incubation with 10 ?g/mL LPS. Immunocytochemistry were used to measure the contents of NF-?B, phosphorylated I?B? in phagocyte.Results The content of NF-?B p65 located in the nuclear in control group was little. The content of NF-?B p65 located in the nuclear in LPS group markly higher than that in control group(P
RESUMO
Objective To observe the effect of erythropoietin(EPO)on apoptosis and glycogen synthase kinase-3?(GSK-3?)level in newborn rats with hypoxic-ischemic brain damage(HIBD).Methods Thirty 7-day-old neonatal rats were randomly divided into 3 groups:sham-operated group,hypoxic-ischemic(HI)group and EPO group.Rats in HI group and EPO group were subjected to left common carotid artery ligation,and then they were exposed to 80 mL/L oxygen and 920 mL/L nitrogen gas in the sealed containers of 37 ℃ for up to 2.5 hours to establish HIBD models.EPO was injected intraperitoneally into the EPO group rats after operation,Solution was injected into the first 2 groups.All rats were killed at the 24 hours after operations,The apoptosis was identified and analyzed by flow cytometry.The level of GSK-3? was detected by enzyme-linked immumosorbent assay.Results The neuronal apoptosis and GSK-3? content in the cortex and hippocampus tissue in HI group were significantly higher than those in the sham-operated group(Pa