Objective To explore the effect on the differentiatiation of bone marrow mesenchymal stem cells(BMSCs) induced by Ganglioside(GM1) into neural cells.Methods Rat BMSCs were isolated on the basis of its ability to adhere to the culture plate,passaged three times,and finally added GM1 to induce its differentiation.The morphologic changes of BMSCs were observed under phase-contrast microscopy,then neuron specific enolase(NSE) and glial fibrillary acidic protein(GFAP) expression were determined by immunocytochemistry way.Never growth factor(NGF) mRNA and brain-derived neurotrophic factor(BDNF) mRNA expression were detected with RT-PCR and then compared with those of FBS control group and blank control group.Results In GM1 induction group,BMSCs appeared round-shaped,with some dendrite and axon interlaced.(29.47%?3.26)% BMSCs showed positive staining to NSE,while(2.32?0.18)% were positive to GFAP.(6.97?0.56)% and(10.6?0.75)% BMSCs were positive to NSE in FBS control group and blank control group respectively,while(1.41?0.35)% and(1.21?0.35)% BMSCs were positive to GFAP in FBS group and blank control group respectively.NGF mRNA and BDNF mRNA levels in GM1 induction group were significant higher than those in the FBS group(all P

Objective To observe the effects of volatile oil of Angelicae Sinensis Radix on blood pressure and related inflammatory cytokines of hypertensive rat models; To investigate the action mechanism of regulating the blood pressure.Methods Wistar male rats were fed withL-NNA to establish hypertensive rat models. Hypertensive rats were randomly divided into normal control group, model group, positive medicine group, volatile oil of Angelicae Sinensis Radix high- and low-dose groups, with 5 rats in each group. Each medication group was given relative medicine for gavage for 8 weeks. Non-invasive blood pressure measurement system was used to observe the systolic pressure of tail artery of rats before and after medication; the levels of ET-1, CRP, and VCAM-1 in serum were detected by the method of ELISA; RT-PCR was used to measure CRP mRNA of heart.Results The levels of systolic blood pressure, ET-1, VCAM-1, CRP and CRP mRNA in model group were significantly higher than those of normal group (P<0.05,P<0.01); Compared with model group, the levels of ET-1, VCAM-1, CRP and CRP mRNA in model group significantly decreased (P<0.05, P<0.01).Conclusion Volatile oil of Angelicae Sinensis Radix can inhibit vascular inflammatory response and then realize the effects of regulating blood pressure.

Objective To establish a rapid determination of sodium valprate in plasma by capillary zone electrophoresis.Method Plasma was acidized by 1 mol/L HCl, VPA was extracted into organic phase (n-Hexane), then re-extracted into aqueous phase (0.05 mmol/L NaOH solution including 15% Ethanol). Capillary clone was 75 ?m(id)?37 cm. Electrolyte consisted of 15 mmol/L sodium salicylate, 0.5 mmol/L CTAB and 15% Ethanol (pH 5.7).Separating voltage was 20 kV, detection wave was 214 nm, temperature was 20℃,injection time was 5 s by press in negative.Result The linear ranger of concentration for standard drug was between 25~200 ?g/ml (r=0.999),the limit of detection was 0.35 ?g/ml, the average recovery of VPA was 87.4%,the average inter-day and intar-day CV were less than 4% and 6%. Conclusion This method is simple, rapid, reliable and correct, for determination of VPA in plasma.

Objective To investigate the association of serum angiotensin converting enzyme(ACE)activity and ACE gene polymorphism with vascular dementia(VD)and Alzheimer's disease(AD).Methods Using the polymerase chain reaction(PCR),ACE gene polymorphism was analyzed in 62 patients with VD,39 patients with AD and 50 healthy controls.The ACE activity in 56 patients with VD,33 patients with AD and 46 healthy controls was measured by means of capillary electrophoresis ultraviolet detection.Results The ACE activity showed no significant difference between VD,AD and healthy controls.We did not find any association of ACE gene polymorphism in patients with VD.The frequency of I allele was significantly higher in AD group than that in the controls(P

Objective To investigate the association of the gene polymorphism of plasminogen activator inhibitor 1 (PAI 1) with the cerebral infarction and recurrent cerebral infarction (RCI). Methods The plasma PAI 1 activity, by means of chromgenic substrate assay, and the sequence polymorphisms of 4G/5G in promotor region and (CA)n dinucleotide repeats in the 4th intron of PAI 1 gene, by amplified fragment length polymorphism assay, were measured in 50 patients with first ever cerebral infarction (FCI), 45 patients with RCI and 60 healthy controls.Results The plasma PAI 1 activities in both FCI patients (1.13?1 1 AU/ml) and RCI (1.13?0.150 AU/ml) were remarkably higher than that in the controls (0.7?0.25 AU/ml) (both P

Objective To investigate the role of mutation of insulin receptor(IR) gene on the development of ischemic cerebral vascular disease.Methods The base variations at exon 17 and 20 of IR gene, by means of PCR SSCP were determined in the 68 cases of atherothrombotic cerebral infarction (ACI), 81 cases of lacunar infarction (LI) and 62 healthy controls.Results There were two alleles of T and C at exon 17 of IR gene. The prevalence of mutant of T allele in ACI patients was more common than that in the controls. The blood pressure and the parameters of blood sugar,lipid metabolism in the patients with mutant were higher than those in the controls with wild type gene. The correlative analysis showed the polymorphism of IR gene was not related statistically to the blood pressure. No base variation at exon 20 was found in the study.Conclusion By promoting the development of atherosclerosis,the mutation at exon 17 of IR gene may participate in the occurrence of ischemic stroke.

Objective To establish a method to measure Angiotensin Converting Enzyme activity in serum by MECC. Method Mixture of serum and substrate Hip-His-Leu had been incubated for 120 min at 37℃, substrate Hip-His-Leu was digested into two parts, Hip and His-Leu. The reaction was ended by 0. 1 mmol/L HC1 , the production was analyzed by MECC directly to detecte content of Hip in production, and calculated ACE activity. Running buffer was 20 mmol/L pH 9. 0 boric acid-borate buffer (including SDS 50 mmol/L) , capillary column was 75?m i. d.?37 cm, injection was 3s by press, voltage was 16 kV, running time was 7. 5 min, detected by UV detector at 200 nm, tempreture was 20℃. Result The within-run and between-run CV was 2. 7% and 5. 2%. The detection limits of ACE activity was 0. 2 IU/L ( singal/noise = 3). The ACE activity and absorption was linearly related from 2. 4 to 72 IU/L. The mean value of ACE was 5. 2-21. 9 IU/L (x?1. 96 s) in 50 normals. Conclusion It was a one of rapid, precise methods for determination of ACE activity in serum.

ObjectiveTo observe the effects of ultrafiltration extract from Angelica Sinensis Radix and Hedysari Radix on PC12 cell apoptosis induced by H2O2; To discuss its mechanism of action.Methods H2O2 was used in the incubation of PC12 cells to establish the oxidative damage nerve cell apoptosis model. The experiment was divided into normal control group, model group, and three different dosages (0.375, 0.75, 1.5 g/L) of ultra-filtration extracted from Angelica Sinensis Radix and Hedysari Radix after modeling for interference. Rate of cell apoptosis was detected by flow cytometry; mitochondrial membrane potential was measured by laser scanning confocal microscopy; the protein expressions of cleaved Caspase-3, Bax and Bcl-2 were detected by Western blot.Results Compared with the model group, rates of cell apoptosis in the different dosage groups decreased significantly; membrane potential of mitochondria increased; the protein expressions of cleaved Caspase-3 and Bax decreased; the expression of Bcl-2 increased; the ratio of Bcl-2 and Bax increased (P<0.05).Conclusion The ultra-filtration extracted from Angelica Sinensis Radix and Hedysari Radix can inhibit PC12 cell apoptosis induced by H2O2.

Objective To investigate the effects of ultra-filtration extract from the mixture of Angelicae Sinensis Radix and Hedysarum Polybotrys (UFE-AH) on the expressions of HSP70 and eNOS in H2O2-induced endothelial cell apoptosis. Methods H2O2 induced ECV-304 cell apoptosis to prepare models. The experiment was divided into normal control group, model group, simple medicine group, medicine intervention group, and all treatment groups received relevant medicine for intervention. Flow cytometry (FCM) was used to detect apoptosis and concentration of intracellular Ca2+;RT-PCR was used to detect the mRNA expression of HSP70 and eNOS;Western blot was used to detect the expression of HSP70 protein;Nitrale reduetase and spectrophotometric method were employed to detect the content of NO. Results Compared with normal control group, cell apoptosis rate, concentration of intracellular Ca2+, and expression of HSP70 increased significantly in model group (P<0.05);gene expression of eNOS mRNA and content of NO decreased (P<0.05). Compared with model group, cell apoptosis rate and concentration of intracellular Ca2+dropped in medicine intervention group (P<0.05);expressions of HSP70, eNOS mRNA and content of NO increased (P<0.05). Conclusion UFE-AH can confront H2O2-induced cell apoptosis H2O2 of ECV-304 human umbilical vein endothelial by increasing the expressions of HSP70 and eNOS and content of NO, and reducing the intracellular calcium overload.

Objective To investigate clinical predictors in early pregnancy for adverse pregnancy outcomes in women complicated with chronic nephropathy. Methods One hundred and eighty-four pregnancies complicated with chronic nephropathy who delivered between January, 2005 and January, 2014 in Peking University First Hospital were retrospectively analyzed. Two hundred pregnant women without chronic nephropathy were selected as the control group. Pregnancy outcomes were compared between the two groups. Relationships between clinical predictors in early pregnancy [age, history of kidney disease, drugs used before pregnancy (in three months), results of renal biopsy, blood pressure, serum creatinine, urea nitrogen, 24 h urinary protein, estimated glomerular filtration rate, stage of chronic nephropathy] and adverse pregnancy outcomes [maternal mortality;pregnancy complicated by severe preeclampsia;renal function decline, early preterm birth, very low birth weight infants, fetal loss after 20 weeks of pregnancy] were assessed by logistic regression analysis. T-test, Chi-square test and multivariate regressions were used for statistical analysis. Results There were 174 and 197 livebirths in the study and the control groups, respectively. The most popular type of chronic nephropathy in pregnant women was IgA nephropathy (38.6%, 71/184). Compared with the control group, the risk of premature labor [9.8%(17/174) vs 3.0%(6/197), χ2=7.184], low birth weight infants[18.4%(32/174) vs 7.1%(14/197),χ2=9.813], very low birth weight infants [5.7%(10/174) vs 1.5%(3/197),χ2=4.536], fetal loss after 20 weeks of pregnancy [5.7%(10/184) vs 1.5%(3/200), χ2=4.536] and severe preeclampsia [17.9%(33/184) vs 1.5%(3/200), χ2=33.544] increased significantly in the study group (all P < 0.05). Twenty-four-hour urinary protein content (OR=1.84, 95%CI: 1.36-2.50, P=0.001) and mean arterial pressure (OR=1.04, 95%CI: 1.00-1.07, P=0.027) in early pregnancy were risk factors for adverse pregnancy outcomes. The risk of renal function decline increased significantly in patients with higher stages of chronic nephropathy in early pregnancy (OR=6.50, 95%CI: 3.34-8.21, P<0.01). Mother complicated by preeclampsia during pregnancy was an independent risk factor (OR=11.10, 95%CI: 4.48-27.20, P<0.01). Compared with women whose 24 h urinary protein content less than 1g in early pregnancy (122 livebirths within 126 cases), the risk of premature labor [17.3%(9/52) vs 6.6%(8/122), χ2=4.780], increased significantly in women whose 24 h urinary protein content were more than or equal to 1 g in early pregnancy (52 livebirths within 58 cases) (P<0.05). Conclusions Elevated urinary protein level and mean arterial pressure in early pregnancy were risk factors of adverse pregnancy outcomes. The risk of renal function decline increased in patients with higher stages of chronic nephropathy in early pregnancy. Mother complicated by preeclampsia during pregnancy was an independent risk factor for poor prognosis of the fetus.