Purpose　The aim is to study the transduction of m urine stem cell factor(SCF) into umbilical blood cells by LipofectinRMmediated and expression in them.Methods　Murine SCF cDNA encoding extra cellu lar domain was isolated using PCR from plasmid pRC/CMV(containing SCF gene), and then recombined into the expression vector pcDNA3,and transferred into enrichme nt cultural umbilical blood cells. Semi-quantitative RT-PCR was used to examin e the expression on mRNA level.And the effects of supernatant of transfected umb ilical blood cells were investigated alone or in coordinate with GM-CSF by colo ny formation test of human bone marrow cells in semisolid culture.Results 　SCF mRNA was expressed in transfected umbilical blood cells.The su pernat ant of transfected umbilical blood cells could increase the number of CFU-GM, s ynergizing with GM-CSF.Conclusion　The supernatant of umbil ical b lood cells transfected with vector containing mSCF gene can stimulate the colony formation of human bone marrow cells in combination with GM-CSF.

AIM: To study the effect of shenmai injection (SMI), a Chinese medicine, on nitric oxide and the expression of endothelial nitric oxide synthase (eNOS) mRNA in myocardium of rats with experimental myocardial ischemia. METHODS: Rats were randomly divided into four groups: control, model (ischemia), SMI 1 and SMI 2 group. A rat model of acute myocardial ischemia was established by isoprenaline treatment and the lift of ST segment in ECG was used as the index of myocardial ischemia. The nitric oxide (NO) contents in serum and myocardium and the expression of eNOS mRNA in myocardium were measured. RESULTS: Compared with control group, ST segment of ECG was significantly elevated 20, 30, 40 min after myocardial ischemia in model group, the lift peak of ST segment occurred 20 min after myocardial ischemia, the concentration of NO in the serum and myocardium and the expression of eNOS mRNA in myocardium were significantly lowered in model group. Compared with the model group, in SMI 1 group and SMI 2 group, the concentration of NO in the serum and myocardium and the expression of eNOS mRNA in myocardium were significantly increased, the lift of ST segment were significantly reduced 20, 30, 40 min after myocardial ischemia. Compared with SMI 1 group, the concentration of NO in the serum and myocardium and the expression of eNOS mRNA in myocardium and the lift of ST segment were not statistically different in SMI 2 group. CONCLUSION: Shenmai injection can increase the expression of eNOS mRNA in myocardium and the content of NO, and protect against myocardial ischemia in rats.

Objective To investigate the association of high-sensitivity C-reactive protein(hs-CRP) with the abnormality of glucose metabolism in patients with essential hypertension.Methods Based on the level of fast plasma glucose(FPG) and 2-hours-plasma glucose(2hPG),120 patients with essential hypertension were divided into 3 groups:Normal glucose tolerance group(NGT),impaired glucose tolerance group(IGT)and diabetes mellitus group (DM).The hs-CRP was measured.Results The level of hs-CRP gradually increased from NGT to DM groups(P＜0.05).The level of hs-CRP was positively correlated with SBP,DBP,2hPG and FPG in patients with essential hypertension(r =0.48,0.37,0.46,0.31,P＜0.05).Conclusion The abnormality of glucose metabolism in patients with essential hypertension was related with hs-CRP.

Objective To analyze the clinicopathological characteris tics of systemic lupus erythematosus (SLE) with secondary antiphospholid syndrome (APS) . Methods Data of 11 cases of SLE with secondary APS (SLE with APS) admitted to Peking Union Medical College Hospital from January 2000 to March 2010 were retrospectively analyzed. Kidney biopsy was performed on all of these patients. Differences of clinicopathology and outcomes between SLE with and without APS were compared. Results Renal involvement was found in all the SLE with APS patients. The prominent clinical manifestations included hypertension (54.5%), nephrotic level of proteinuria (24 h proteinuria ≥3.5 g)(72.7%) and renal insufficiency (45.5%). Diastolic blood pressure, mean arterial pressure and glomerular filtration rate in SLE with APS were significantly higher than those in SLE without APS (all P＜0.05). In 8 out of 11 cases (72.7%), APS nephropathy (APSN) in kidney biopsy was found, characterized by small vessel vaso-occlusive lesions. These included thrombotic microangiopathy (TMA), fibrous intimal hyperplasia (FIH), focal cortical atrophy (FCA) and tubular thyroidization. Among those, 5 cases (45.5%) had chronic APSN and 4 (36.4%) had acute APSN (one case had acute and chronic APSN at the same time). The incidences of APSN and acute APSN in the SLE with APS group were significantly higher than those in SLE without APS group (P＜0.05). Conclusions The major renal manifestations of SLE with APS are hypertension, nephrotic level of proteinuria and renal insufficiency. Other than lupus nephritis, also a high incidence of APSN is found in SLE with APS patients.

Objective To detect genetic mutation of apolipoprotein B-100(apoB-100)in patients with primary hypercholesterolemia.Methods One special segment of apoB-100 gene from nucleotide 10549 to 10895 was amplified by polymerase chain reaction(PCR).The PCR products were denatured and hybridized with specific aligonucleotide labeled with digoxigenin,and were analyzed by single strand conformation polymorphism(SSCP)to detect the apoB-100 gene mutation 3531CGC→CGT or other mutations.Results Overall 41 members of 11 primary hypercholesterolemia families were detected,but the above genetic mutation was not detected.Conclusion This genetic mutation is unlikely to exist or of significantly low incidence in Chinese population,and might not be the main cause of primary hypercholesterolemia in the 11 primary hypercholesterolemia families.

Objective To examine the circulating glucose and body weight in the transgenic MKR mouse model who expressed dominant-negative IGF-1 receptor and insulin receptor in skeletal muscle leading to systemic insulin resistance and diabetes. Methods MKR mice were genotyped by PCR analysis of tail DNA.And in these mice we examined the circulating glucose and body weight once a week from 1 to 16 weeks of age, and the circulating insulin and glucose tolerance at age of two-month-old by using C57 mice as controls. Results The descendents of MKR mice kept hereditary feature. And these mice had hyperglycaemia from 3 weeks of age,and an increasing body weight slowly(P<0.01).Twenty-fold significant hyperinsulinemia was observed in MKR mice,and they were glucose intolerant in 2-month-old male and female (P<0.01).Conclusions The MKR mouse is an excellent model of type 2 diabetes

OBJECTIVE:To study the bioequiavailability of domestic roxithromycin tablets and imported ones.METH?ODS:20male healthy volunteers took single dose of150mg roxithromycin tablet orally in a random crossover design,blood concentrations were determined by LC-MS.RESULTS:The main pharmacokinetic parameters of domestic and imported tablets were determined respectively as follows,AUC 0～72 were(72.81?23.85)(mg?n)/L and(72.63?20.86)(mg?h)/L,AUC 0～∞ were(74.41?24.45)(mg?h)/L and(74.42?24.45)(mg?h)/L,C max were(6.46?1.51)mg/L and(6.58?1.55)mg/L,t max were(1.9?0.5)h and(1.8?0.5)h,t 1/2 were(13.56?1.35)h and(14.18?1.50)h,the relative bioavailability of the homemade tablet to imported one was(99.8?11.2)%.CONCLUSIONS:Domestic and imported roxithromycin are bioequivalent.

Objective To examine the relationship between renal vascular lesions and clinical prognosis in lupus nephritis patients. Methods Renal biopsy specimens and clinical data of 451 patients with lupus nephritis in our hospital from January 1998 to February 2006 were enrolled in this study. According to renal vascular lesions, those patients were classified into six groups: no renal vascular lesion (NVL), immune complex deposits (ICD), lupus vasculopathy (LV),thrombotic microangiopathy (TMA), vasculitis (VAS) and arteriosclerosis (AS). The relationship of renal vascular lesions and the clinical features was retrospectively analyzed. Results (1) In 451 lupus nephritis patients, 247 eases (54.8%) had renal vascular lesion. The incidence of the ICD, LV, TMA, AS and VAS were 8.4%, 9.8%, 6.7%, 29.3% and 0.7%, respectively. (2) The incidence of vascular lesions in IV type lupus nephritis was 69.7%, which was higher than others.(3) Except ICD group, the incidences of renal insufficiency and hypertension were significantlyhigher in vascular lesion groups than those in NVL group (P<0.05). TMA group showed the most severe clinical manifestation, including anemia and depression of platelet. (4) The prognosis of TMAgroup was the worst. The prognosis among other groups was not significantly different.Conclusions Vascular lesions are common in lupus nephritis. TMA patients present not only the most severe clinical manifestation with the poorest prognosis. Other vascular lesions also indicate an elevation of blood pressure and Scr level, but without significant difference in prognosis.

AIM: To compare the pharmacokinetics and relative bioavailability of the domestic and imported sustained-release tablets of gliclazide in healthy volunteers. METHODS:The study was performed by an four-period crossover design with singledose and multiple-dose administration. The plasmadrug concentrations of twenty male healthy volunteers were determined by liquid chromatography with mass spectrum detector method (LC-MS). RESULTS:The pharmacokinetic parameters after a single oral dose of the domestic and imported gliclazide tablets were (7.2+s 1.5) h and (6.9 +1.4) h for tmax, (13.4 ±1.2) h and (13.7 +1.3) h for t1/2, (2.4 +0.8) mg ·L-1and (2.3 ±0.6) mg· L-1 forcmax, (48 ±14)mg · h · L-1 and (48 +14) mg· h · L-1 forAUC0-60,(51+15) mg· h· L-1 and (50±14) mg· h· L-1for AUC0-∞, (22.4 ± 1.9 ) h and (22.8 ± 1.9 ) h for MRT, respectively. The steady state pharmacokinetic parameters after multiple doses of the domestic and imported gliclazide tablets were (6. 1 ± 1.4) h and (6.5+1.4) h for tmax, (4.6±0.9) mg· L-1 and (4.7±1.1) mg· L-1 for cmax, (0.23 ±0.08) mg ·L-1and (0.26±0.08) mg· L-1 forcmin, (1.6±0.3) mg·L-1 and (1.6±0.3) mg · L-1 for mean value of steady plasma-drug concentration (cav),(94±19) mg· h · L-1 and (95 ±20) mg · h · L-1forAUCss, (282 ±33)% and (283 ±43)% for degree of fluctuation DF ), respectively. The relative bioavailability of the domestic gliclazide tablet to the imported gliclazide tablet following a single and multiple dose were ( 102 ± 9) % and (99 ± 10 ) %, respectively. Main pharmacokinetic parameters between the two formulations in both single and multiples dose studies showed no statistical difference ( P >0.05 ). CONCLUSION: The result of two one side t-test shows that the two formulations are bioequivalent.

OBJECTIVETo study the CPS-II mechanism underlying the pathological process of elevated blood ammonia leading to liver injury.

METHODSAn in vitro hyperammonemia hepatocyte cell model was constructed by exposure to various concentrations of NH4Cl. The subsequent changes to cellular morphology were observed by microscopy. to cell apoptosis were determined by flow cytometry, and to mRNA and protein expression of CPS-II were examined by real-time PCR and western blotting, respectively.

RESULTSExposure to NH₄Cl led to dose-dependent morphological damage, apoptosis and necrosis of the hepatocytes. The apoptosis rate was significantly higher for the high-dose group than for the control (no exposure) group (24.7% ± 2.39% vs. 4.1% ± 0.78%, q =8.06, P less than 0.05). Expression of the CPS-II mRNA was significantly elevated in response to NH₄Cl exposure (vs. the control group; F=191.881, P < 0.05).The CPS-II mRNA expression level increased with increasing NH₄Cl concentration (grey values: 1.040 ± 0.045, 1.641 ± 0.123, 2.285 ± 0.167 and 3.347 ± 0.124, respectively). The CPS-II protein expression level was also significantly enhanced in response to the NH₄Cl exposures (CPS-II protein and internal GAPDH grey value ratios: 0.099 ± 0.0130, 0.143 ± 0.025, 0.161 ± 0.036 and 0.223 ± 0.042, respectively; t=3.825, 3.968 and 6.908, P less than 0.05).

CONCLUSIONCPS-II mRNA and protein expression levels become elevated with increase in the NH₄Cl concentrations, suggesting that in addition to the urea cycle, CPS-II may play an important role in the ammonia metabolism under the condition of hyperammonemia.